Update config.c

Thanks @Normmatt for reporting that bug.

Makefile

@@ -17,7 +17,6 @@ revision := $(shell git describe --tags --match v[0-9]* --abbrev=8 | sed 's/-[0-
 dir_source := source
 dir_patches := patches
 dir_loader := loader
-dir_screeninit := screeninit
 dir_injector := injector
 dir_mset := CakeHax
 dir_ninjhax := CakeBrah
@@ -33,7 +32,7 @@ objects = $(patsubst $(dir_source)/%.s, $(dir_build)/%.o, \
           $(patsubst $(dir_source)/%.c, $(dir_build)/%.o, \
           $(call rwildcard, $(dir_source), *.s *.c)))
 
-bundled = $(dir_build)/rebootpatch.h $(dir_build)/emunandpatch.h $(dir_build)/injector.h $(dir_build)/loader.h $(dir_build)/screeninit.h
+bundled = $(dir_build)/rebootpatch.h $(dir_build)/emunandpatch.h $(dir_build)/injector.h $(dir_build)/loader.h
 
 .PHONY: all
 all: launcher a9lh ninjhax
@@ -55,12 +54,11 @@ clean:
 	@$(MAKE) $(FLAGS) -C $(dir_mset) clean
 	@$(MAKE) $(FLAGS) -C $(dir_ninjhax) clean
 	@$(MAKE) -C $(dir_loader) clean
-	@$(MAKE) -C $(dir_screeninit) clean
 	@$(MAKE) -C $(dir_injector) clean
 	@rm -rf $(dir_out) $(dir_build)
 
 $(dir_out):
-	@mkdir -p "$(dir_out)/luma/payloads"
+	@mkdir -p "$(dir_out)"
 
 $(dir_out)/$(name).dat: $(dir_build)/main.bin $(dir_out)
 	@$(MAKE) $(FLAGS) -C $(dir_mset) launcher
@@ -102,10 +100,6 @@ $(dir_build)/loader.h: $(dir_loader)/Makefile
 	@$(MAKE) -C $(dir_loader)
 	@bin2c -o $@ -n loader $(@D)/loader.bin
 
-$(dir_build)/screeninit.h: $(dir_screeninit)/Makefile
-	@$(MAKE) -C $(dir_screeninit)
-	@bin2c -o $@ -n screeninit $(@D)/screeninit.bin
-
 $(dir_build)/memory.o: CFLAGS += -O3
 $(dir_build)/config.o: CFLAGS += -DCONFIG_TITLE="\"$(name) $(revision) configuration\""
 

injector/source/patcher.c

@@ -5,7 +5,7 @@
 
 #ifndef PATH_MAX
 #define PATH_MAX 255
-#define CONFIG(a) ((loadConfig() >> (a + 16)) & 1)
+#define CONFIG(a) (((loadConfig() >> (a + 16)) & 1) != 0)
 #define MULTICONFIG(a) ((loadConfig() >> (a * 2 + 6)) & 3)
 #define BOOTCONFIG(a, b) ((loadConfig() >> a) & b)
 #endif
@@ -90,21 +90,21 @@ static int fileOpen(IFile *file, FS_ArchiveID archiveId, const char *path, int f
     return IFile_Open(file, archiveId, archivePath, filePath, flags);
 }
 
-static u32 secureInfoExists(void)
+static bool secureInfoExists(void)
 {
-    static u32 secureInfoExists = 0;
+    static bool exists = false;
 
-    if(!secureInfoExists)
+    if(!exists)
     {
         IFile file;
         if(R_SUCCEEDED(fileOpen(&file, ARCHIVE_NAND_RW, "/sys/SecureInfo_C", FS_OPEN_READ)))
         {
-            secureInfoExists = 1;
+            exists = true;
             IFile_Close(&file);
         }
     }
 
-    return secureInfoExists;
+    return exists;
 }
 
 static u32 loadConfig(void)
@@ -125,21 +125,48 @@ static u32 loadConfig(void)
     return config;
 }
 
+static void progIdToStr(char *strEnd, u64 progId)
+{
+    while(progId)
+    {
+        static const char hexDigits[] = "0123456789ABCDEF";
+        *strEnd-- = hexDigits[(u32)(progId & 0xF)];
+        progId >>= 4;
+    }
+}
+
+static void loadTitleCodeSection(u64 progId, u8 *code, u32 size)
+{
+    /* Here we look for "/luma/code_sections/[u64 titleID in hex, uppercase].bin"
+       If it exists it should be a decompressed binary code file */
+
+    char path[] = "/luma/code_sections/0000000000000000.bin";
+    progIdToStr(path + 35, progId);
+
+    IFile file;
+    Result ret = fileOpen(&file, ARCHIVE_SDMC, path, FS_OPEN_READ);
+
+    if(R_SUCCEEDED(ret))
+    {
+        u64 fileSize, total;
+
+        ret = IFile_GetSize(&file, &fileSize);
+
+        if(R_SUCCEEDED(ret) && fileSize <= size)
+        {
+            ret = IFile_Read(&file, &total, code, fileSize);
+            IFile_Close(&file);
+        }
+    }
+}
+
 static int loadTitleLocaleConfig(u64 progId, u8 *regionId, u8 *languageId)
 {
     /* Here we look for "/luma/locales/[u64 titleID in hex, uppercase].txt"
        If it exists it should contain, for example, "EUR IT" */
 
     char path[] = "/luma/locales/0000000000000000.txt";
-
+    progIdToStr(path + 29, progId);
-    u32 i = 29;
-
-    while(progId)
-    {
-        static const char hexDigits[] = "0123456789ABCDEF";
-        path[i--] = hexDigits[(u32)(progId & 0xF)];
-        progId >>= 4;
-    }
 
     IFile file;
     Result ret = fileOpen(&file, ARCHIVE_SDMC, path, FS_OPEN_READ);
@@ -236,8 +263,8 @@ static void patchCfgGetLanguage(u8 *code, u32 size, u8 languageId, u8 *CFGU_GetC
                 if(instr[3] == 0xEB) //We're looking for BL
                 {
                     u8 *calledFunction = instr;
-                    u32 i = 0,
+                    u32 i = 0;
-                        found;
+                    bool found;
 
                     do
                     {
@@ -337,7 +364,7 @@ void patchCode(u64 progId, u8 *code, u32 size)
             );
 
             //Apply only if the updated NAND hasn't been booted
-            if((BOOTCONFIG(0, 3) != 0) == (BOOTCONFIG(3, 1) && CONFIG(1)))
+            if((BOOTCONFIG(0, 3) != 0) == (BOOTCONFIG(2, 1) && CONFIG(1)))
             {
                 static const u8 skipEshopUpdateCheckPattern[] = {
                     0x30, 0xB5, 0xF1, 0xB0
@@ -381,7 +408,7 @@ void patchCode(u64 progId, u8 *code, u32 size)
         case 0x0004001000027000LL: // KOR MSET
         case 0x0004001000028000LL: // TWN MSET
         {
-            if(CONFIG(5))
+            if(CONFIG(4))
             {
                 static const u16 verPattern[] = u"Ver.";
                 const u32 currentNand = BOOTCONFIG(0, 3);
@@ -516,12 +543,15 @@ void patchCode(u64 progId, u8 *code, u32 size)
         }
 
         default:
-            if(CONFIG(4))
+            if(CONFIG(3))
             {
                 u32 tidHigh = (progId & 0xFFFFFFF000000000LL) >> 0x24;
 
                 if(tidHigh == 0x0004000)
                 {
+                    //External .code section loading
+                    loadTitleCodeSection(progId, code, size);
+
                     //Language emulation
                     u8 regionId = 0xFF,
                        languageId = 0xFF;

loader/linker.ld

@@ -1,7 +1,7 @@
 ENTRY(_start)
 SECTIONS
 {
-    . = 0x24FFFB00;
+    . = 0x24FFFF00;
     .text.start : { *(.text.start) }
     .text : { *(.text) }
     .data : { *(.data) }

loader/source/cache.h

@@ -0,0 +1,27 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+#pragma once
+
+#include "types.h"
+
+void flushCaches(void);

loader/source/cache.s

@@ -0,0 +1,52 @@
+@   This file is part of Luma3DS
+@   Copyright (C) 2016 Aurora Wright, TuxSH
+@
+@   This program is free software: you can redistribute it and/or modify
+@   it under the terms of the GNU General Public License as published by
+@   the Free Software Foundation, either version 3 of the License, or
+@   (at your option) any later version.
+@
+@   This program is distributed in the hope that it will be useful,
+@   but WITHOUT ANY WARRANTY; without even the implied warranty of
+@   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+@   GNU General Public License for more details.
+@
+@   You should have received a copy of the GNU General Public License
+@   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+@
+@   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+@   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+@   Notices displayed by works containing it.
+
+.arm
+.global flushCaches
+.type   flushCaches STT_FUNC
+
+flushCaches:
+    @ Clean and flush data cache
+    @ Adpated from http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0155a/ch03s03s05.html ,
+    @ and https://github.com/gemarcano/libctr9_io/blob/master/src/ctr_system_ARM.c#L39 as well
+    @ Note: ARM's example is actually for a 8KB DCache (which is what the 3DS has)
+    @ Implemented in bootROM at address 0xffff0830
+
+    mov r1, #0                          @ segment counter
+    outer_loop:
+        mov r0, #0                      @ line counter
+
+        inner_loop:
+            orr r2, r1, r0                  @ generate segment and line address
+            mcr p15, 0, r2, c7, c14, 2      @ clean and flush the line
+            add r0, #0x20                   @ increment to next line
+            cmp r0, #0x400
+            bne inner_loop
+
+        add r1, #0x40000000
+        cmp r1, #0
+        bne outer_loop
+
+    mcr p15, 0, r1, c7, c10, 4              @ drain write buffer
+
+    @ Flush instruction cache
+    mcr p15, 0, r1, c7, c5, 0
+
+    bx lr

loader/source/main.c

@@ -1,10 +1,35 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
 #include "memory.h"
+#include "cache.h"
 
 void main(void)
 {
     void *payloadAddress = (void *)0x23F00000;
 
-    memcpy(payloadAddress, (void*)0x24F00000, *(u32 *)0x24FFFB04);
+    memcpy(payloadAddress, (void*)0x24F00000, *(u32 *)0x24FFFF04);
+
+    flushCaches();
     
     ((void (*)())payloadAddress)();
 }

loader/source/memory.c

@@ -1,3 +1,30 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+
+/*
+*   memcpy adapted from https://github.com/mid-kid/CakesForeveryWan/blob/557a8e8605ab3ee173af6497486e8f22c261d0e2/source/memfuncs.c
+*/
+
 #include "memory.h"
 
 void memcpy(void *dest, const void *src, u32 size)

loader/source/memory.h

@@ -1,3 +1,30 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+
+/*
+*   memcpy adapted from https://github.com/mid-kid/CakesForeveryWan/blob/557a8e8605ab3ee173af6497486e8f22c261d0e2/source/memfuncs.c
+*/
+
 #pragma once
 
 #include "types.h"

loader/source/start.s

@@ -1,16 +1,27 @@
+@   This file is part of Luma3DS
+@   Copyright (C) 2016 Aurora Wright, TuxSH
+@
+@   This program is free software: you can redistribute it and/or modify
+@   it under the terms of the GNU General Public License as published by
+@   the Free Software Foundation, either version 3 of the License, or
+@   (at your option) any later version.
+@
+@   This program is distributed in the hope that it will be useful,
+@   but WITHOUT ANY WARRANTY; without even the implied warranty of
+@   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+@   GNU General Public License for more details.
+@
+@   You should have received a copy of the GNU General Public License
+@   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+@
+@   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+@   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+@   Notices displayed by works containing it.
+
 .section .text.start
 .align 4
 .global _start
 _start:
-    b start
+    b main
 
     .word 0
-
-start:
-    @ Flush caches
-    mov r0, #0
-    mcr p15, 0, r0, c7, c5, 0  @ flush I-cache
-    mcr p15, 0, r0, c7, c6, 0  @ flush D-cache
-    mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
-
-    b main

loader/source/types.h

@@ -1,3 +1,25 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
 #pragma once
 
 #include <stdint.h>

patches/reboot.s

@@ -1,7 +1,7 @@
 .arm.little
 
 payload_addr equ 0x23F00000   ; Brahma payload address.
-payload_maxsize equ 0x20000   ; Maximum size for the payload (200 KB will do).
+payload_maxsize equ 0x10000   ; Maximum size for the payload (maximum that CakeBrah supports).
 
 .create "build/reboot.bin", 0
 .arm
@@ -54,13 +54,16 @@ payload_maxsize equ 0x20000   ; Maximum size for the payload (200 KB will do).
         movne r4, #0
         bne read_payload ; Go read the real payload.
 
-    ; Copy the last digits of the wanted firm to the 5th byte of the payload
+    ; Copy the low TID (in UTF-16) of the wanted firm to the 5th byte of the payload
-    add r2, sp, #0x3A8 - 0x70
+    add r0, sp, #0x3A8 - 0x70
-    ldr r0, [r2, #0x27]
+    add r0, 0x1A
-    ldr r1, =payload_addr + 4
+    add r1, r0, #0x10
-    str r0, [r1]
+    ldr r2, =payload_addr + 4
-    ldr r0, [r2, #0x2B]
+    copy_TID_low:
-    str r0, [r1, #4]
+        ldrh r3, [r0], #2
+        strh r3, [r2], #2
+        cmp r0, r1
+        blo copy_TID_low
 
     ; Set kernel state
     mov r0, #0
@@ -88,61 +91,32 @@ dat_fname:     .dcw "sdmc:/Luma3DS.dat"
 
 .align 4
     kernelcode_start:
-        ; Set MPU settings
-        mrc p15, 0, r0, c2, c0, 0  ; dcacheable
-        mrc p15, 0, r12, c2, c0, 1  ; icacheable
-        mrc p15, 0, r1, c3, c0, 0  ; write bufferable
-        mrc p15, 0, r2, c5, c0, 2  ; daccess
-        mrc p15, 0, r3, c5, c0, 3  ; iaccess
-        ldr r4, =0x18000035  ; 0x18000000 128M
-        bic r2, r2, #0xF0000  ; unprotect region 4
-        bic r3, r3, #0xF0000  ; unprotect region 4
-        orr r0, r0, #0x10  ; dcacheable region 4
-        orr r2, r2, #0x30000  ; region 4 r/w
-        orr r3, r3, #0x30000  ; region 4 r/w
-        orr r12, r12, #0x10  ; icacheable region 4
-        orr r1, r1, #0x10  ; write bufferable region 4
-        mcr p15, 0, r0, c2, c0, 0
-        mcr p15, 0, r12, c2, c0, 1
-        mcr p15, 0, r1, c3, c0, 0  ; write bufferable
-        mcr p15, 0, r2, c5, c0, 2  ; daccess
-        mcr p15, 0, r3, c5, c0, 3  ; iaccess
-        mcr p15, 0, r4, c6, c4, 0  ; region 4 (hmmm)
 
-        mrc p15, 0, r0, c2, c0, 0  ; dcacheable
+    ; Disable MPU
-        mrc p15, 0, r1, c2, c0, 1  ; icacheable
-        mrc p15, 0, r2, c3, c0, 0  ; write bufferable
-        orr r0, r0, #0x20  ; dcacheable region 5
-        orr r1, r1, #0x20  ; icacheable region 5
-        orr r2, r2, #0x20  ; write bufferable region 5
-        mcr p15, 0, r0, c2, c0, 0  ; dcacheable
-        mcr p15, 0, r1, c2, c0, 1  ; icacheable
-        mcr p15, 0, r2, c3, c0, 0  ; write bufferable
-
-    ; Flush cache
-    mov r2, #0
-    mov r1, r2
-    flush_cache:
-        mov r0, #0
-        mov r3, r2, lsl #30
-        flush_cache_inner_loop:
-            orr r12, r3, r0, lsl#5
-            mcr p15, 0, r1, c7, c10, 4  ; drain write buffer
-            mcr p15, 0, r12, c7, c14, 2  ; clean and flush dcache entry (index and segment)
-            add r0, #1
-            cmp r0, #0x20
-            bcc flush_cache_inner_loop
-        add r2, #1
-        cmp r2, #4
-        bcc flush_cache
-
-    ; Enable MPU
     ldr r0, =0x42078  ; alt vector select, enable itcm
     mcr p15, 0, r0, c1, c0, 0
-    mcr p15, 0, r1, c7, c5, 0  ; flush dcache
+
-    mcr p15, 0, r1, c7, c6, 0  ; flush icache
+    ; Clean and flush data cache
+    mov r1, #0                          ; segment counter
+    outer_loop:
+        mov r0, #0                      ; line counter
+
+        inner_loop:
+            orr r2, r1, r0                  ; generate segment and line address
+            mcr p15, 0, r2, c7, c14, 2      ; clean and flush the line
+            add r0, #0x20                   ; increment to next line
+            cmp r0, #0x400
+            bne inner_loop
+
+        add r1, #0x40000000
+        cmp r1, #0
+        bne outer_loop
+
     mcr p15, 0, r1, c7, c10, 4              ; drain write buffer
 
+    ; Flush instruction cache
+    mcr p15, 0, r1, c7, c5, 0
+
     ; Jump to payload
     ldr r0, =payload_addr
     bx r0

screeninit/Makefile

@@ -1,47 +0,0 @@
-rwildcard = $(foreach d, $(wildcard $1*), $(filter $(subst *, %, $2), $d) $(call rwildcard, $d/, $2))
-
-ifeq ($(strip $(DEVKITARM)),)
-$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
-endif
-
-include $(DEVKITARM)/3ds_rules
-
-CC := arm-none-eabi-gcc
-AS := arm-none-eabi-as
-LD := arm-none-eabi-ld
-OC := arm-none-eabi-objcopy
-
-name := $(shell basename $(CURDIR))
-
-dir_source := source
-dir_build := build
-
-ASFLAGS := -mcpu=mpcore -mfloat-abi=hard
-CFLAGS  := -Wall -Wextra -MMD -MP -mthumb -mthumb-interwork $(ASFLAGS) -fno-builtin -std=c11 -Wno-main -O2 -flto -ffast-math
-LDFLAGS := -nostdlib
-
-objects = $(patsubst $(dir_source)/%.s, $(dir_build)/%.o, \
-          $(patsubst $(dir_source)/%.c, $(dir_build)/%.o, \
-          $(call rwildcard, $(dir_source), *.s *.c)))
-
-.PHONY: all
-all: ../$(dir_build)/$(name).bin
-
-.PHONY: clean
-clean:
-	@rm -rf $(dir_build)
-
-../$(dir_build)/$(name).bin: $(dir_build)/$(name).elf
-	$(OC) -S -O binary $< $@
-
-$(dir_build)/$(name).elf: $(objects)
-	$(LINK.o) -T linker.ld $(OUTPUT_OPTION) $^
-
-$(dir_build)/%.o: $(dir_source)/%.c
-	@mkdir -p "$(@D)"
-	$(COMPILE.c) $(OUTPUT_OPTION) $<
-
-$(dir_build)/%.o: $(dir_source)/%.s
-	@mkdir -p "$(@D)"
-	$(COMPILE.s) $(OUTPUT_OPTION) $<
-include $(call rwildcard, $(dir_build), *.d)

screeninit/linker.ld

@@ -1,12 +0,0 @@
-ENTRY(_start)
-SECTIONS
-{
-    . = 0x24FFFC00;
-    .text.start : { *(.text.start) }
-    .text : { *(.text) }
-    .data : { *(.data) }
-    .bss : { *(.bss COMMON) }
-    .rodata : { *(.rodata) }
-    . = ALIGN(4);
-}
-

screeninit/source/main.c

@@ -1,105 +0,0 @@
-#include "types.h"
-
-void main(void)
-{
-   const u32 brightness[4] = {0x5F, 0x4C, 0x39, 0x26};
-   u32 brightnessLevel = *(vu32 *)0x24FFFC08;
-   vu32 *const arm11 = (u32 *)0x1FFFFFF8;
-
-   *(vu32 *)0x10141200 = 0x1007F;
-   *(vu32 *)0x10202014 = 0x00000001;
-   *(vu32 *)0x1020200C &= 0xFFFEFFFE;
-   *(vu32 *)0x10202240 = brightness[brightnessLevel];
-   *(vu32 *)0x10202A40 = brightness[brightnessLevel];
-   *(vu32 *)0x10202244 = 0x1023E;
-   *(vu32 *)0x10202A44 = 0x1023E;
-
-   // Top screen
-   *(vu32 *)0x10400400 = 0x000001c2;
-   *(vu32 *)0x10400404 = 0x000000d1;
-   *(vu32 *)0x10400408 = 0x000001c1;
-   *(vu32 *)0x1040040c = 0x000001c1;
-   *(vu32 *)0x10400410 = 0x00000000;
-   *(vu32 *)0x10400414 = 0x000000cf;
-   *(vu32 *)0x10400418 = 0x000000d1;
-   *(vu32 *)0x1040041c = 0x01c501c1;
-   *(vu32 *)0x10400420 = 0x00010000;
-   *(vu32 *)0x10400424 = 0x0000019d;
-   *(vu32 *)0x10400428 = 0x00000002;
-   *(vu32 *)0x1040042c = 0x00000192;
-   *(vu32 *)0x10400430 = 0x00000192;
-   *(vu32 *)0x10400434 = 0x00000192;
-   *(vu32 *)0x10400438 = 0x00000001;
-   *(vu32 *)0x1040043c = 0x00000002;
-   *(vu32 *)0x10400440 = 0x01960192;
-   *(vu32 *)0x10400444 = 0x00000000;
-   *(vu32 *)0x10400448 = 0x00000000;
-   *(vu32 *)0x1040045C = 0x00f00190;
-   *(vu32 *)0x10400460 = 0x01c100d1;
-   *(vu32 *)0x10400464 = 0x01920002;
-   *(vu32 *)0x10400468 = 0x18300000;
-   *(vu32 *)0x10400470 = 0x80341;
-   *(vu32 *)0x10400474 = 0x00010501;
-   *(vu32 *)0x10400478 = 0;
-   *(vu32 *)0x10400490 = 0x000002D0;
-   *(vu32 *)0x1040049C = 0x00000000;
-
-   // Disco register
-   for(u32 i = 0; i < 256; i++)
-       *(vu32 *)0x10400484 = 0x10101 * i;
-
-   // Bottom screen
-   *(vu32 *)0x10400500 = 0x000001c2;
-   *(vu32 *)0x10400504 = 0x000000d1;
-   *(vu32 *)0x10400508 = 0x000001c1;
-   *(vu32 *)0x1040050c = 0x000001c1;
-   *(vu32 *)0x10400510 = 0x000000cd;
-   *(vu32 *)0x10400514 = 0x000000cf;
-   *(vu32 *)0x10400518 = 0x000000d1;
-   *(vu32 *)0x1040051c = 0x01c501c1;
-   *(vu32 *)0x10400520 = 0x00010000;
-   *(vu32 *)0x10400524 = 0x0000019d;
-   *(vu32 *)0x10400528 = 0x00000052;
-   *(vu32 *)0x1040052c = 0x00000192;
-   *(vu32 *)0x10400530 = 0x00000192;
-   *(vu32 *)0x10400534 = 0x0000004f;
-   *(vu32 *)0x10400538 = 0x00000050;
-   *(vu32 *)0x1040053c = 0x00000052;
-   *(vu32 *)0x10400540 = 0x01980194;
-   *(vu32 *)0x10400544 = 0x00000000;
-   *(vu32 *)0x10400548 = 0x00000011;
-   *(vu32 *)0x1040055C = 0x00f00140;
-   *(vu32 *)0x10400560 = 0x01c100d1;
-   *(vu32 *)0x10400564 = 0x01920052;
-   *(vu32 *)0x10400568 = 0x18300000 + 0x46500;
-   *(vu32 *)0x10400570 = 0x80301;
-   *(vu32 *)0x10400574 = 0x00010501;
-   *(vu32 *)0x10400578 = 0;
-   *(vu32 *)0x10400590 = 0x000002D0;
-   *(vu32 *)0x1040059C = 0x00000000;
-
-   // Disco register
-   for(u32 i = 0; i < 256; i++)
-       *(vu32 *)0x10400584 = 0x10101 * i;
-
-   *(vu32 *)0x10400468 = 0x18300000;
-   *(vu32 *)0x1040046c = 0x18300000;
-   *(vu32 *)0x10400494 = 0x18300000;
-   *(vu32 *)0x10400498 = 0x18300000;
-   *(vu32 *)0x10400568 = 0x18346500;
-   *(vu32 *)0x1040056c = 0x18346500;
-
-   //Set CakeBrah framebuffers
-   *((vu32 *)0x23FFFE00) = 0x18300000;
-   *((vu32 *)0x23FFFE04) = 0x18300000;
-   *((vu32 *)0x23FFFE08) = 0x18346500;
-
-   //Clear ARM11 entry offset
-   *arm11 = 0;
-
-   //Wait for the entry to be set
-   while(!*arm11);
-
-   //Jump to it
-   ((void (*)())*arm11)();
-}

screeninit/source/start.s

@@ -1,10 +0,0 @@
-.section .text.start
-.align 4
-.global _start
-_start:
-    @ Disable interrupts
-    CPSID aif
-
-    b main
-
-    .word 0

screeninit/source/types.h

@@ -1,13 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-//Common data types
-typedef uint8_t u8;
-typedef uint16_t u16;
-typedef uint32_t u32;
-typedef uint64_t u64;
-typedef volatile u8 vu8;
-typedef volatile u16 vu16;
-typedef volatile u32 vu32;
-typedef volatile u64 vu64;

source/buttons.h

@@ -1,5 +1,23 @@
 /*
-*   buttons.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
@@ -10,7 +28,7 @@
 
 #define BUTTON_R1              (1 << 8)
 #define BUTTON_L1              (1 << 9)
-#define BUTTON_A               1
+#define BUTTON_A               (1 << 0)
 #define BUTTON_B               (1 << 1)
 #define BUTTON_X               (1 << 10)
 #define BUTTON_Y               (1 << 11)
@@ -25,3 +43,4 @@
 #define SINGLE_PAYLOAD_BUTTONS (BUTTON_LEFT | BUTTON_RIGHT | BUTTON_UP | BUTTON_DOWN | BUTTON_START | BUTTON_X | BUTTON_Y)
 #define L_PAYLOAD_BUTTONS      (BUTTON_R1 | BUTTON_A | BUTTON_SELECT)
 #define MENU_BUTTONS           (BUTTON_LEFT | BUTTON_RIGHT | BUTTON_UP | BUTTON_DOWN | BUTTON_A | BUTTON_START)
+#define PIN_BUTTONS            (BUTTON_A | BUTTON_B | BUTTON_X | BUTTON_Y | BUTTON_START)

source/cache.h

@@ -0,0 +1,39 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+#pragma once
+
+#include "types.h"
+
+/***
+    The following functions flush the data cache, then waits for all memory transfers to be finished.
+    The data cache and/or the instruction cache MUST be flushed before doing one of the following:
+        - rebooting
+        - powering down
+        - setting the ARM11 entrypoint to execute a function
+        - jumping to a payload
+***/
+
+void flushEntireDCache(void); //actually: "clean and flush"
+void flushDCacheRange(void *startAddress, u32 size);
+void flushEntireICache(void);
+void flushICacheRange(void *startAddress, u32 size);

source/cache.s

@@ -0,0 +1,89 @@
+@   This file is part of Luma3DS
+@   Copyright (C) 2016 Aurora Wright, TuxSH
+@
+@   This program is free software: you can redistribute it and/or modify
+@   it under the terms of the GNU General Public License as published by
+@   the Free Software Foundation, either version 3 of the License, or
+@   (at your option) any later version.
+@
+@   This program is distributed in the hope that it will be useful,
+@   but WITHOUT ANY WARRANTY; without even the implied warranty of
+@   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+@   GNU General Public License for more details.
+@
+@   You should have received a copy of the GNU General Public License
+@   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+@
+@   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+@   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+@   Notices displayed by works containing it.
+
+.text
+.arm
+.align 4
+
+.global flushEntireDCache
+.type flushEntireDCache, %function
+flushEntireDCache:
+    @ Adapted from http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0155a/ch03s03s05.html,
+    @ and https://github.com/gemarcano/libctr9_io/blob/master/src/ctr_system_ARM.c#L39 as well
+    @ Note: ARM's example is actually for a 8KB DCache (which is what the 3DS has)
+
+    @ Implemented in bootROM at address 0xffff0830
+    mov r1, #0                          @ segment counter
+    outer_loop:
+        mov r0, #0                      @ line counter
+
+        inner_loop:
+            orr r2, r1, r0                  @ generate segment and line address
+            mcr p15, 0, r2, c7, c14, 2      @ clean and flush the line
+            add r0, #0x20                   @ increment to next line
+            cmp r0, #0x400
+            bne inner_loop
+
+        add r1, #0x40000000
+        cmp r1, #0
+        bne outer_loop
+
+    mcr p15, 0, r1, c7, c10, 4              @ drain write buffer
+    bx lr
+
+.global flushDCacheRange
+.type flushDCacheRange, %function
+flushDCacheRange:
+    @ Implemented in bootROM at address 0xffff08a0
+    add r1, r0, r1                      @ end address
+    bic r0, #0x1f                       @ align source address to cache line size (32 bytes)
+
+    flush_dcache_range_loop:
+        mcr p15, 0, r0, c7, c14, 1      @ clean and flush the line corresponding to the address r0 is holding
+        add r0, #0x20
+        cmp r0, r1
+        blo flush_dcache_range_loop
+
+    mov r0, #0
+    mcr p15, 0, r0, c7, c10, 4          @ drain write buffer
+    bx lr
+
+.global flushEntireICache
+.type flushEntireICache, %function
+flushEntireICache:
+    @ Implemented in bootROM at address 0xffff0ab4
+    mov r0, #0
+    mcr p15, 0, r0, c7, c5, 0
+    bx lr
+
+.global flushICacheRange
+.type flushICacheRange, %function
+flushICacheRange:
+    @ Implemented in bootROM at address 0xffff0ac0
+    add r1, r0, r1                      @ end address
+    bic r0, #0x1f                       @ align source address to cache line size (32 bytes)
+
+    flush_icache_range_loop:
+        mcr p15, 0, r0, c7, c5, 1      @ flush the line corresponding to the address r0 is holding
+        add r0, #0x20
+        cmp r0, r1
+        blo flush_icache_range_loop
+
+    bx lr

source/config.c

@@ -1,40 +1,57 @@
 /*
-*   config.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #include "config.h"
 #include "utils.h"
-#include "screeninit.h"
+#include "screen.h"
 #include "draw.h"
 #include "fs.h"
-#include "i2c.h"
 #include "buttons.h"
 
 void configureCFW(const char *configPath)
 {
-    u32 needToDeinit = initScreens();
+    initScreens();
 
     drawString(CONFIG_TITLE, 10, 10, COLOR_TITLE);
     drawString("Press A to select, START to save", 10, 30, COLOR_WHITE);
 
-    const char *multiOptionsText[]  = { "Screen-init brightness: 4( ) 3( ) 2( ) 1( )",
+    const char *multiOptionsText[]  = { "Screen brightness: 4( ) 3( ) 2( ) 1( )",
                                         "New 3DS CPU: Off( ) Clock( ) L2( ) Clock+L2( )" };
 
     const char *singleOptionsText[] = { "( ) Autoboot SysNAND",
-                                        "( ) SysNAND is updated (A9LH-only)",
+                                        "( ) Use SysNAND FIRM if booting with R (A9LH)",
-                                        "( ) Force A9LH detection",
                                         "( ) Use second EmuNAND as default",
-                                        "( ) Enable region/language emulation",
+                                        "( ) Enable region/language emu. and ext. .code",
                                         "( ) Show current NAND in System Settings",
                                         "( ) Show GBA boot screen in patched AGB_FIRM",
-                                        "( ) Enable splash screen with no screen-init" };
+                                        "( ) Display splash screen before payloads",
+                                        "( ) Use a PIN" };
 
     struct multiOption {
         int posXs[4];
         int posY;
         u32 enabled;
     } multiOptions[] = {
-        { .posXs = {26, 31, 36, 41} },
+        { .posXs = {21, 26, 31, 36} },
         { .posXs = {17, 26, 32, 44} }
     };
 
@@ -46,7 +63,7 @@ void configureCFW(const char *configPath)
 
     struct singleOption {
         int posY;
-        u32 enabled;
+        bool enabled;
     } singleOptions[singleOptionsAmount];
 
     //Parse the existing options
@@ -145,10 +162,13 @@ void configureCFW(const char *configPath)
                 u32 oldEnabled = multiOptions[selectedOption].enabled;
                 drawCharacter(selected, 10 + multiOptions[selectedOption].posXs[oldEnabled] * SPACING_X, multiOptions[selectedOption].posY, COLOR_BLACK);
                 multiOptions[selectedOption].enabled = oldEnabled == 3 ? 0 : oldEnabled + 1;
+
+                if(!selectedOption)
+                    updateBrightness(multiOptions[selectedOption].enabled);
             }
             else
             {
-                u32 oldEnabled = singleOptions[selectedOption - multiOptionsAmount].enabled;
+                bool oldEnabled = singleOptions[selectedOption - multiOptionsAmount].enabled;
                 singleOptions[selectedOption - multiOptionsAmount].enabled = !oldEnabled;
                 if(oldEnabled) drawCharacter(selected, 10 + SPACING_X, singleOptions[selectedOption - multiOptionsAmount].posY, COLOR_BLACK);
             }
@@ -171,18 +191,15 @@ void configureCFW(const char *configPath)
     for(u32 i = 0; i < multiOptionsAmount; i++)
         config |= multiOptions[i].enabled << (i * 2 + 6);
     for(u32 i = 0; i < singleOptionsAmount; i++)
-        config |= singleOptions[i].enabled << (i + 16);
+        config |= (singleOptions[i].enabled ? 1 : 0) << (i + 16);
 
-    fileWrite(&config, configPath, 4);
+    if(!fileWrite(&config, configPath, 4))
+    {
+        createDirectory("luma");
+        if(!fileWrite(&config, configPath, 4))
+            error("Error writing the configuration file");
+    }
 
     //Wait for the pressed buttons to change
     while(HID_PAD == BUTTON_START);
-
-    if(needToDeinit)
-    {
-        //Turn off backlight
-        i2cWriteRegister(I2C_DEV_MCU, 0x22, 0x16);
-        deinitScreens();
-        PDN_GPU_CNT = 1;
-    }
 }

source/config.h

@@ -1,12 +1,30 @@
 /*
-*   config.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
 
 #include "types.h"
 
-#define CONFIG(a) ((config >> (a + 16)) & 1)
+#define CONFIG(a) (((config >> (a + 16)) & 1) != 0)
 #define MULTICONFIG(a) ((config >> (a * 2 + 6)) & 3)
 #define BOOTCONFIG(a, b) ((config >> a) & b)
 

source/crypto.c

@@ -1,6 +1,26 @@
 /*
-*   crypto.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
 *
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
 *   Crypto libs from http://github.com/b1l1s/ctr
 */
 
@@ -274,25 +294,26 @@ static void sha(void *res, const void *src, u32 size, u32 mode)
 *                  NAND/FIRM crypto
 ****************************************************************/
 
-static u8 nandCTR[0x10],
+static u8 __attribute__((aligned(4))) nandCTR[0x10];
-          nandSlot;
+static u8 nandSlot;
 
 static u32 fatStart;
 
 //Initialize the CTRNAND crypto
 void ctrNandInit(void)
 {
-    u8 cid[0x10];
+    u8 __attribute__((aligned(4))) cid[0x10];
-    u8 shaSum[0x20];
+    u8 __attribute__((aligned(4))) shaSum[0x20];
 
     sdmmc_get_cid(1, (u32 *)cid);
     sha(shaSum, cid, 0x10, SHA_256_MODE);
     memcpy(nandCTR, shaSum, 0x10);
 
-    if(console)
+    if(isN3DS)
     {
-        u8 keyY0x5[0x10] = {0x4D, 0x80, 0x4F, 0x4E, 0x99, 0x90, 0x19, 0x46, 0x13, 0xA2, 0x04, 0xAC, 0x58, 0x44, 0x60, 0xBE};
+        u8 __attribute__((aligned(4))) keyY0x5[0x10] = {0x4D, 0x80, 0x4F, 0x4E, 0x99, 0x90, 0x19, 0x46, 0x13, 0xA2, 0x04, 0xAC, 0x58, 0x44, 0x60, 0xBE};
         aes_setkey(0x05, keyY0x5, AES_KEYY, AES_INPUT_BE | AES_INPUT_NORMAL);
+
         nandSlot = 0x05;
         fatStart = 0x5CAD7;
     }
@@ -306,13 +327,13 @@ void ctrNandInit(void)
 //Read and decrypt from the selected CTRNAND
 u32 ctrNandRead(u32 sector, u32 sectorCount, u8 *outbuf)
 {
-    u8 tmpCTR[0x10];
+    u8 __attribute__((aligned(4))) tmpCTR[0x10];
     memcpy(tmpCTR, nandCTR, 0x10);
     aes_advctr(tmpCTR, ((sector + fatStart) * 0x200) / AES_BLOCK_SIZE, AES_INPUT_BE | AES_INPUT_NORMAL);
 
     //Read
     u32 result;
-    if(!firmSource)
+    if(firmSource == FIRMWARE_SYSNAND)
         result = sdmmc_nand_readsectors(sector + fatStart, sectorCount, outbuf);
     else
     {
@@ -327,6 +348,24 @@ u32 ctrNandRead(u32 sector, u32 sectorCount, u8 *outbuf)
     return result;
 }
 
+//Sets the 7.x NCCH KeyX and the 6.x gamecard save data KeyY
+void setRSAMod0DerivedKeys(void)
+{
+    if(!isDevUnit)
+    {
+        const u8 __attribute__((aligned(4))) keyX0x25[0x10] = {0xCE, 0xE7, 0xD8, 0xAB, 0x30, 0xC0, 0x0D, 0xAE, 0x85, 0x0E, 0xF5, 0xE3, 0x82, 0xAC, 0x5A, 0xF3};
+        const u8 __attribute__((aligned(4))) keyY0x2F[0x10] = {0xC3, 0x69, 0xBA, 0xA2, 0x1E, 0x18, 0x8A, 0x88, 0xA9, 0xAA, 0x94, 0xE5, 0x50, 0x6A, 0x9F, 0x16};
+
+        aes_setkey(0x25, keyX0x25, AES_KEYX, AES_INPUT_BE | AES_INPUT_NORMAL);
+        aes_setkey(0x2F, keyY0x2F, AES_KEYY, AES_INPUT_BE | AES_INPUT_NORMAL);
+
+        /* [3dbrew] The first 0x10-bytes are checked by the v6.0/v7.0 NATIVE_FIRM keyinit function, 
+                    when non-zero it clears this block and continues to do the key generation.
+                    Otherwise when this block was already all-zero, it immediately returns. */
+        memset32((void *)0x01FFCD00, 0, 0x10);
+    }
+}
+
 //Decrypt a FIRM ExeFS
 void decryptExeFs(u8 *inbuf)
 {
@@ -344,13 +383,29 @@ void decryptExeFs(u8 *inbuf)
     aes(inbuf - 0x200, exeFsOffset, exeFsSize / AES_BLOCK_SIZE, ncchCTR, AES_CTR_MODE, AES_INPUT_BE | AES_INPUT_NORMAL);
 }
 
-//ARM9Loader replacement
+/* ARM9Loader replacement
-void arm9Loader(u8 *arm9Section, u32 mode)
+   Originally adapted from: https://github.com/Reisyukaku/ReiNand/blob/228c378255ba693133dec6f3368e14d386f2cde7/source/crypto.c#L233 */
+void arm9Loader(u8 *arm9Section)
 {
+    //Determine the arm9loader version
+    u32 a9lVersion;
+    switch(arm9Section[0x53])
+    {
+        case 0xFF:
+            a9lVersion = 0;
+            break;
+        case '1':
+            a9lVersion = 1;
+            break;
+        default:
+            a9lVersion = 2;
+            break;
+    }
+
     //Firm keys
-    u8 keyY[0x10],
+    u8 __attribute__((aligned(4))) keyY[0x10];
-       arm9BinCTR[0x10],
+    u8 __attribute__((aligned(4))) arm9BinCTR[0x10];
-       arm9BinSlot = mode ? 0x16 : 0x15;
+    u8 arm9BinSlot = a9lVersion ? 0x16 : 0x15;
 
     //Setup keys needed for arm9bin decryption
     memcpy(keyY, arm9Section + 0x10, 0x10);
@@ -362,13 +417,18 @@ void arm9Loader(u8 *arm9Section, u32 mode)
     for(u8 *tmp = arm9Section + 0x30; *tmp; tmp++)
         arm9BinSize = (arm9BinSize << 3) + (arm9BinSize << 1) + *tmp - '0';
 
-    if(mode)
+    if(a9lVersion)
     {
-        const u8 key1[0x10] = {0x07, 0x29, 0x44, 0x38, 0xF8, 0xC9, 0x75, 0x93, 0xAA, 0x0E, 0x4A, 0xB4, 0xAE, 0x84, 0xC1, 0xD8},
+        u8 __attribute__((aligned(4))) keyX[0x10];
-                 key2[0x10] = {0x42, 0x3F, 0x81, 0x7A, 0x23, 0x52, 0x58, 0x31, 0x6E, 0x75, 0x8E, 0x3A, 0x39, 0x43, 0x2E, 0xD0};
+
-        u8 keyX[0x10];
+        if(!isDevUnit)
+        {
+            const u8 __attribute__((aligned(4))) key1[0x10] = {0x07, 0x29, 0x44, 0x38, 0xF8, 0xC9, 0x75, 0x93, 0xAA, 0x0E, 0x4A, 0xB4, 0xAE, 0x84, 0xC1, 0xD8};
+            const u8 __attribute__((aligned(4))) key2[0x10] = {0x42, 0x3F, 0x81, 0x7A, 0x23, 0x52, 0x58, 0x31, 0x6E, 0x75, 0x8E, 0x3A, 0x39, 0x43, 0x2E, 0xD0};
+
+            aes_setkey(0x11, a9lVersion == 2 ? key2 : key1, AES_KEYNORMAL, AES_INPUT_BE | AES_INPUT_NORMAL);
+        }
 
-        aes_setkey(0x11, mode == 1 ? key2 : key1, AES_KEYNORMAL, AES_INPUT_BE | AES_INPUT_NORMAL);
         aes_use_keyslot(0x11);
         aes(keyX, arm9Section + 0x60, 1, NULL, AES_ECB_DECRYPT_MODE, 0);
         aes_setkey(arm9BinSlot, keyX, AES_KEYX, AES_INPUT_BE | AES_INPUT_NORMAL);
@@ -382,18 +442,29 @@ void arm9Loader(u8 *arm9Section, u32 mode)
     aes(arm9Section + 0x800, arm9Section + 0x800, arm9BinSize / AES_BLOCK_SIZE, arm9BinCTR, AES_CTR_MODE, AES_INPUT_BE | AES_INPUT_NORMAL);
 
     //Set >=9.6 KeyXs
-    if(mode == 1)
+    if(a9lVersion == 2 && !isDevUnit)
     {
-        u8 keyData[0x10] = {0xDD, 0xDA, 0xA4, 0xC6, 0x2C, 0xC4, 0x50, 0xE9, 0xDA, 0xB6, 0x9B, 0x0D, 0x9D, 0x2A, 0x21, 0x98},
+        u8 __attribute__((aligned(4))) keyData[0x10] = {0xDD, 0xDA, 0xA4, 0xC6, 0x2C, 0xC4, 0x50, 0xE9, 0xDA, 0xB6, 0x9B, 0x0D, 0x9D, 0x2A, 0x21, 0x98};
-           decKey[0x10];
+        u8 __attribute__((aligned(4))) decKey[0x10];
 
         //Set keys 0x19..0x1F keyXs
         aes_use_keyslot(0x11);
-        for(u8 slot = 0x19; slot < 0x20; slot++)
+        for(u8 slot = 0x19; slot < 0x20; slot++, keyData[0xF]++)
         {
             aes(decKey, keyData, 1, NULL, AES_ECB_DECRYPT_MODE, 0);
             aes_setkey(slot, decKey, AES_KEYX, AES_INPUT_BE | AES_INPUT_NORMAL);
-            keyData[0xF] += 1;
         }
     }
 }
+
+void computePINHash(u8 out[32], u8 *in, u32 blockCount)
+{
+    u8 __attribute__((aligned(4))) cid[0x10];
+    u8 __attribute__((aligned(4))) cipherText[0x10];
+    sdmmc_get_cid(1, (u32 *)cid);
+
+    aes_use_keyslot(4); // console-unique keyslot which keys are set by the Arm9 bootROM
+    aes(cipherText, in, blockCount, cid, AES_CBC_ENCRYPT_MODE, AES_INPUT_BE | AES_INPUT_NORMAL);
+
+    sha(out, cipherText, 0x10, SHA_256_MODE);
+}

source/crypto.h

@@ -1,6 +1,26 @@
 /*
-*   crypto.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
 *
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
 *   Crypto libs from http://github.com/b1l1s/ctr
 */
 
@@ -79,9 +99,15 @@
 #define SHA_224_HASH_SIZE   (224 / 8)
 #define SHA_1_HASH_SIZE     (160 / 8)
 
-extern u32 emuOffset, console, firmSource;
+extern u32 emuOffset;
+extern bool isN3DS;
+extern bool isDevUnit;
+extern FirmwareSource firmSource;
 
 void ctrNandInit(void);
 u32 ctrNandRead(u32 sector, u32 sectorCount, u8 *outbuf);
+void setRSAMod0DerivedKeys(void);
 void decryptExeFs(u8 *inbuf);
-void arm9Loader(u8 *arm9Section, u32 mode);
+void arm9Loader(u8 *arm9Section);
+
+void computePINHash(u8 out[32], u8 *in, u32 blockCount);

source/draw.c

@@ -1,22 +1,36 @@
 /*
-*   draw.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
 *
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
 *   Code to print to the screen by mid-kid @CakesFW
+*      https://github.com/mid-kid/CakesForeveryWan/
 */
 
 #include "draw.h"
-#include "screeninit.h"
+#include "screen.h"
 #include "utils.h"
 #include "fs.h"
-#include "memory.h"
 #include "font.h"
 
-static const struct fb {
-    u8 *top_left;
-    u8 *top_right;
-    u8 *bottom;
-} *const fb = (struct fb *)0x23FFFE00;
-
 static inline int strlen(const char *string)
 {
     char *stringEnd = (char *)string;
@@ -26,22 +40,20 @@ static inline int strlen(const char *string)
     return stringEnd - string;
 }
 
-void clearScreens(void)
+bool loadSplash(void)
 {
-    memset32(fb->top_left, 0, 0x46500);
+    //Don't delay boot nor init the screens if no splash image is on the SD
-    memset32(fb->top_right, 0, 0x46500);
+    if(getFileSize("/luma/splash.bin") + getFileSize("/luma/splash.bin") == 0)
-    memset32(fb->bottom, 0, 0x38400);
+        return false;
-}
     
-u32 loadSplash(void)
-{
     initScreens();
 
-    //Don't delay boot if no splash image is on the SD
+    fileRead(fb->top_left, "/luma/splash.bin");
-    if(fileRead(fb->top_left, "/luma/splash.bin") +
+    fileRead(fb->bottom, "/luma/splashbottom.bin");
-       fileRead(fb->bottom, "/luma/splashbottom.bin"))
+
-        return 1;
+    chrono(3);
-    return 0;
+
+    return true;
 }
 
 void drawCharacter(char character, int posX, int posY, u32 color)

source/draw.h

@@ -1,7 +1,28 @@
 /*
-*   draw.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
 *
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
 *   Code to print to the screen by mid-kid @CakesFW
+*      https://github.com/mid-kid/CakesForeveryWan/
 */
 
 #pragma once
@@ -19,7 +40,6 @@
 #define COLOR_RED   0x0000FF
 #define COLOR_BLACK 0x000000
 
-u32 loadSplash(void);
+bool loadSplash(void);
-void clearScreens(void);
 void drawCharacter(char character, int posX, int posY, u32 color);
 int drawString(const char *string, int posX, int posY, u32 color);

source/emunand.c

@@ -1,5 +1,23 @@
 /*
-*   emunand.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #include "emunand.h"
@@ -7,12 +25,12 @@
 #include "fatfs/sdmmc/sdmmc.h"
 #include "../build/emunandpatch.h"
 
-void locateEmuNAND(u32 *off, u32 *head, u32 *emuNAND)
+void locateEmuNAND(u32 *off, u32 *head, FirmwareSource *emuNAND)
 {
     static u8 *const temp = (u8 *)0x24300000;
 
     const u32 nandSize = getMMCDevice(0)->total_size;
-    u32 nandOffset = *emuNAND == 1 ? 0 :
+    u32 nandOffset = *emuNAND == FIRMWARE_EMUNAND ? 0 :
                                   (nandSize > 0x200000 ? 0x400000 : 0x200000);
 
     //Check for RedNAND
@@ -35,7 +53,7 @@ void locateEmuNAND(u32 *off, u32 *head, u32 *emuNAND)
        or to SysNAND if there isn't any */
     else
     {
-        (*emuNAND)--;
+        *emuNAND = (*emuNAND == FIRMWARE_EMUNAND2) ? FIRMWARE_EMUNAND : FIRMWARE_SYSNAND;
         if(*emuNAND) locateEmuNAND(off, head, emuNAND);
     }
 }

source/emunand.h

@@ -1,5 +1,23 @@
 /*
-*   emunand.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
@@ -8,5 +26,5 @@
 
 #define NCSD_MAGIC 0x4453434E
 
-void locateEmuNAND(u32 *off, u32 *head, u32 *emuNAND);
+void locateEmuNAND(u32 *off, u32 *head, FirmwareSource *emuNAND);
 void patchEmuNAND(u8 *arm9Section, u32 arm9SectionSize, u8 *process9Offset, u32 process9Size, u32 emuOffset, u32 emuHeader, u32 branchAdditive);

source/fatfs/00history.txt

@@ -10,7 +10,7 @@ R0.00 (February 26, 2006)
 
 R0.01 (April 29, 2006)
 
-  First stable version.
+  The first release.
 
 
 
@@ -246,9 +246,22 @@ R0.11a (September 05, 2015)
 
 R0.12 (April 12, 2016)
 
-  Added support of exFAT file system. (_FS_EXFAT)
+  Added support for exFAT file system. (_FS_EXFAT)
   Added f_expand(). (_USE_EXPAND)
   Changed some members in FINFO structure and behavior of f_readdir().
-  Added an option _USE_CHMOD and removed an option _WORD_ACCESS.
+  Added an option _USE_CHMOD.
-  Fixed errors in the case conversion teble of Unicode (cc*.c).
+  Removed an option _WORD_ACCESS.
+  Fixed errors in the case conversion table of Unicode (cc*.c).
+
+
+
+R0.12a (July 10, 2016)
+
+  Added support for creating exFAT volume with some changes of f_mkfs().
+  Added a file open method FA_OPEN_APPEND. An f_lseek() following f_open() is no longer needed.
+  f_forward() is available regardless of _FS_TINY.
+  Fixed f_mkfs() creates wrong volume.
+  Fixed compilation fails at some configurations, _USE_FASTSEEK and _USE_FORWARD.
+  Fixed wrong memory read in create_name().
+
 

source/fatfs/00readme.txt

@@ -1,4 +1,4 @@
-FatFs Module Source Files R0.12
+FatFs Module Source Files R0.12a
 
 
 FILES

source/fatfs/ff.h

@@ -1,11 +1,13 @@
-/*---------------------------------------------------------------------------/
+/*----------------------------------------------------------------------------/
-/  FatFs - FAT file system module include R0.12     (C)ChaN, 2016
+/  FatFs - Generic FAT file system module  R0.12a                             /
-/----------------------------------------------------------------------------/
+/-----------------------------------------------------------------------------/
-/ FatFs module is a free software that opened under license policy of
-/ following conditions.
 /
 / Copyright (C) 2016, ChaN, all right reserved.
 /
+/ FatFs module is an open source software. Redistribution and use of FatFs in
+/ source and binary forms, with or without modification, are permitted provided
+/ that the following condition is met:
+
 / 1. Redistributions of source code must retain the above copyright notice,
 /    this condition and the following disclaimer.
 /
@@ -13,11 +15,11 @@
 / and any warranties related to this software are DISCLAIMED.
 / The copyright owner or contributors be NOT LIABLE for any damages caused
 / by use of this software.
-/---------------------------------------------------------------------------*/
+/----------------------------------------------------------------------------*/
 
 
 #ifndef _FATFS
-#define _FATFS	88100	/* Revision ID */
+#define _FATFS	80186	/* Revision ID */
 
 #ifdef __cplusplus
 extern "C" {
@@ -25,6 +27,7 @@ extern "C" {
 
 #include "integer.h"	/* Basic integer types */
 #include "ffconf.h"		/* FatFs configuration options */
+
 #if _FATFS != _FFCONF
 #error Wrong configuration file (ffconf.h).
 #endif
@@ -52,7 +55,7 @@ extern PARTITION VolToPart[];	/* Volume - Partition resolution table */
 
 /* Type of path name strings on FatFs API */
 
-#if _LFN_UNICODE			/* Unicode string */
+#if _LFN_UNICODE			/* Unicode (UTF-16) string */
 #if _USE_LFN == 0
 #error _LFN_UNICODE must be 0 at non-LFN cfg.
 #endif
@@ -61,14 +64,25 @@ typedef WCHAR TCHAR;
 #define _T(x) L ## x
 #define _TEXT(x) L ## x
 #endif
-
 #else						/* ANSI/OEM string */
 #ifndef _INC_TCHAR
 typedef char TCHAR;
 #define _T(x) x
 #define _TEXT(x) x
 #endif
+#endif
 
+
+
+/* Type of file size variables */
+
+#if _FS_EXFAT
+#if _USE_LFN == 0
+#error LFN must be enabled when enable exFAT
+#endif
+typedef QWORD FSIZE_t;
+#else
+typedef DWORD FSIZE_t;
 #endif
 
 
@@ -87,6 +101,9 @@ typedef struct {
 #if _MAX_SS != _MIN_SS
 	WORD	ssize;			/* Sector size (512, 1024, 2048 or 4096) */
 #endif
+#if _USE_LFN != 0
+	WCHAR*	lfnbuf;			/* LFN working buffer */
+#endif
 #if _FS_EXFAT
 	BYTE*	dirbuf;			/* Directory entry block scratchpad buffer */
 #endif
@@ -117,19 +134,6 @@ typedef struct {
 
 
 
-/* Type of file size variables and object identifier */
-
-#if _FS_EXFAT
-#if _USE_LFN == 0
-#error LFN must be enabled when enable exFAT
-#endif
-typedef QWORD FSIZE_t;
-#else
-typedef DWORD FSIZE_t;
-#endif
-
-
-
 /* Object ID and allocation information (_FDID) */
 
 typedef struct {
@@ -159,14 +163,14 @@ typedef struct {
 	BYTE	flag;			/* File status flags */
 	BYTE	err;			/* Abort flag (error code) */
 	FSIZE_t	fptr;			/* File read/write pointer (Zeroed on file open) */
-	DWORD	clust;			/* Current cluster of fpter (not valid when fprt is 0) */
+	DWORD	clust;			/* Current cluster of fpter (invalid when fprt is 0) */
 	DWORD	sect;			/* Sector number appearing in buf[] (0:invalid) */
 #if !_FS_READONLY
 	DWORD	dir_sect;		/* Sector number containing the directory entry */
 	BYTE*	dir_ptr;		/* Pointer to the directory entry in the win[] */
 #endif
 #if _USE_FASTSEEK
-	DWORD*	cltbl;			/* Pointer to the cluster link map table (Nulled on file open) */
+	DWORD*	cltbl;			/* Pointer to the cluster link map table (nulled on open, set by application) */
 #endif
 #if !_FS_TINY
 	BYTE	buf[_MAX_SS];	/* File private data read/write window */
@@ -183,10 +187,9 @@ typedef struct {
 	DWORD	clust;			/* Current cluster */
 	DWORD	sect;			/* Current sector */
 	BYTE*	dir;			/* Pointer to the directory item in the win[] */
-	BYTE*	fn;				/* Pointer to the SFN (in/out) {body[8],ext[3],status[1]} */
+	BYTE	fn[12];			/* SFN (in/out) {body[8],ext[3],status[1]} */
 #if _USE_LFN != 0
 	DWORD	blk_ofs;		/* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
-	WCHAR*	lfn;			/* Pointer to the LFN working buffer */
 #endif
 #if _USE_FIND
 	const TCHAR* pat;		/* Pointer to the name matching pattern */
@@ -229,7 +232,7 @@ typedef enum {
 	FR_INVALID_DRIVE,		/* (11) The logical drive number is invalid */
 	FR_NOT_ENABLED,			/* (12) The volume has no work area */
 	FR_NO_FILESYSTEM,		/* (13) There is no valid FAT volume */
-	FR_MKFS_ABORTED,		/* (14) The f_mkfs() aborted due to any parameter error */
+	FR_MKFS_ABORTED,		/* (14) The f_mkfs() aborted due to any problem */
 	FR_TIMEOUT,				/* (15) Could not get a grant to access the volume within defined period */
 	FR_LOCKED,				/* (16) The operation is rejected according to the file sharing policy */
 	FR_NOT_ENOUGH_CORE,		/* (17) LFN working buffer could not be allocated */
@@ -244,11 +247,11 @@ typedef enum {
 
 FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode);				/* Open or create a file */
 FRESULT f_close (FIL* fp);											/* Close an open file object */
-FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br);			/* Read data from a file */
+FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br);			/* Read data from the file */
-FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw);	/* Write data to a file */
+FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw);	/* Write data to the file */
-FRESULT f_lseek (FIL* fp, FSIZE_t ofs);								/* Move file pointer of a file object */
+FRESULT f_lseek (FIL* fp, FSIZE_t ofs);								/* Move file pointer of the file object */
-FRESULT f_truncate (FIL* fp);										/* Truncate file */
+FRESULT f_truncate (FIL* fp);										/* Truncate the file */
-FRESULT f_sync (FIL* fp);											/* Flush cached data of a writing file */
+FRESULT f_sync (FIL* fp);											/* Flush cached data of the writing file */
 FRESULT f_opendir (DIR* dp, const TCHAR* path);						/* Open a directory */
 FRESULT f_closedir (DIR* dp);										/* Close an open directory */
 FRESULT f_readdir (DIR* dp, FILINFO* fno);							/* Read a directory item */
@@ -258,8 +261,8 @@ FRESULT f_mkdir (const TCHAR* path);								/* Create a sub directory */
 FRESULT f_unlink (const TCHAR* path);								/* Delete an existing file or directory */
 FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new);	/* Rename/Move a file or directory */
 FRESULT f_stat (const TCHAR* path, FILINFO* fno);					/* Get file status */
-FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask);			/* Change attribute of the file/dir */
+FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask);			/* Change attribute of a file/dir */
-FRESULT f_utime (const TCHAR* path, const FILINFO* fno);			/* Change timestamp of the file/dir */
+FRESULT f_utime (const TCHAR* path, const FILINFO* fno);			/* Change timestamp of a file/dir */
 FRESULT f_chdir (const TCHAR* path);								/* Change current directory */
 FRESULT f_chdrive (const TCHAR* path);								/* Change current drive */
 FRESULT f_getcwd (TCHAR* buff, UINT len);							/* Get current directory */
@@ -269,8 +272,8 @@ FRESULT f_setlabel (const TCHAR* label);							/* Set volume label */
 FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf);	/* Forward data to the stream */
 FRESULT f_expand (FIL* fp, FSIZE_t szf, BYTE opt);					/* Allocate a contiguous block to the file */
 FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt);			/* Mount/Unmount a logical drive */
-FRESULT f_mkfs (const TCHAR* path, BYTE sfd, UINT au);				/* Create a file system on the volume */
+FRESULT f_mkfs (const TCHAR* path, BYTE opt, DWORD au, void* work, UINT len);	/* Create a FAT volume */
-FRESULT f_fdisk (BYTE pdrv, const DWORD szt[], void* work);			/* Divide a physical drive into some partitions */
+FRESULT f_fdisk (BYTE pdrv, const DWORD* szt, void* work);			/* Divide a physical drive into some partitions */
 int f_putc (TCHAR c, FIL* fp);										/* Put a character to the file */
 int f_puts (const TCHAR* str, FIL* cp);								/* Put a string to the file */
 int f_printf (FIL* fp, const TCHAR* str, ...);						/* Put a formatted string to the file */
@@ -323,40 +326,37 @@ int ff_del_syncobj (_SYNC_t sobj);				/* Delete a sync object */
 /* Flags and offset address                                     */
 
 
-/* File access control and file status flags (FIL.flag) */
+/* File access mode and open method flags (3rd argument of f_open) */
-
 #define	FA_READ				0x01
 #define	FA_WRITE			0x02
 #define	FA_OPEN_EXISTING	0x00
 #define	FA_CREATE_NEW		0x04
 #define	FA_CREATE_ALWAYS	0x08
 #define	FA_OPEN_ALWAYS		0x10
-#define _FA_MODIFIED		0x20
+#define	FA_OPEN_APPEND		0x30
-#define _FA_DIRTY			0x40
 
+/* Fast seek controls (2nd argument of f_lseek) */
+#define CREATE_LINKMAP	((FSIZE_t)0 - 1)
 
-/* FAT sub type (FATFS.fs_type) */
+/* Format options (2nd argument of f_mkfs) */
+#define FM_FAT		0x01
+#define FM_FAT32	0x02
+#define FM_EXFAT	0x04
+#define FM_ANY		0x07
+#define FM_SFD		0x08
 
+/* Filesystem type (FATFS.fs_type) */
 #define FS_FAT12	1
 #define FS_FAT16	2
 #define FS_FAT32	3
 #define FS_EXFAT	4
 
-
+/* File attribute bits for directory entry (FILINFO.fattrib) */
-/* File attribute bits for directory entry */
-
 #define	AM_RDO	0x01	/* Read only */
 #define	AM_HID	0x02	/* Hidden */
 #define	AM_SYS	0x04	/* System */
-#define	AM_VOL	0x08	/* Volume label */
-#define AM_LFN	0x0F	/* LFN entry */
 #define AM_DIR	0x10	/* Directory */
 #define AM_ARC	0x20	/* Archive */
-#define AM_MASK	0x3F	/* Mask of defined bits */
-
-
-/* Fast seek controls */
-#define CREATE_LINKMAP	((FSIZE_t)0 - 1)
 
 
 #ifdef __cplusplus

source/fatfs/ffconf.h

@@ -1,8 +1,8 @@
 /*---------------------------------------------------------------------------/
-/  FatFs - FAT file system module configuration file  R0.12  (C)ChaN, 2016
+/  FatFs - FAT file system module configuration file
 /---------------------------------------------------------------------------*/
 
-#define _FFCONF 88100	/* Revision ID */
+#define _FFCONF 80186	/* Revision ID */
 
 /*---------------------------------------------------------------------------/
 / Function Configurations
@@ -15,7 +15,7 @@
 /  and optional writing functions as well. */
 
 
-#define _FS_MINIMIZE	1
+#define _FS_MINIMIZE	0
 /* This option defines minimization level to remove some basic API functions.
 /
 /   0: All basic functions are enabled.
@@ -62,8 +62,7 @@
 
 
 #define	_USE_FORWARD	0
-/* This option switches f_forward() function. (0:Disable or 1:Enable)
+/* This option switches f_forward() function. (0:Disable or 1:Enable) */
-/  To enable it, also _FS_TINY need to be 1. */
 
 
 /*---------------------------------------------------------------------------/
@@ -118,13 +117,13 @@
 
 
 #define	_LFN_UNICODE	0
-/* This option switches character encoding on the API. (0:ANSI/OEM or 1:Unicode)
+/* This option switches character encoding on the API. (0:ANSI/OEM or 1:UTF-16)
 /  To use Unicode string for the path name, enable LFN and set _LFN_UNICODE = 1.
 /  This option also affects behavior of string I/O functions. */
 
 
 #define _STRF_ENCODE	3
-/* When _LFN_UNICODE == 1, this option selects the character encoding on the file to
+/* When _LFN_UNICODE == 1, this option selects the character encoding ON THE FILE to
 /  be read/written via string I/O functions, f_gets(), f_putc(), f_puts and f_printf().
 /
 /  0: ANSI/OEM
@@ -153,7 +152,7 @@
 
 
 #define _STR_VOLUME_ID	0
-#define _VOLUME_STRS	"RAM","NAND","CF","SD1","SD2","USB1","USB2","USB3"
+#define _VOLUME_STRS	"RAM","NAND","CF","SD","SD2","USB","USB2","USB3"
 /* _STR_VOLUME_ID switches string support of volume ID.
 /  When _STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
 /  number in the path name. _VOLUME_STRS defines the drive ID strings for each
@@ -217,7 +216,7 @@
 
 
 #define _FS_NORTC	1
-#define _NORTC_MON	3
+#define _NORTC_MON	1
 #define _NORTC_MDAY	1
 #define _NORTC_YEAR	2016
 /* The option _FS_NORTC switches timestamp functiton. If the system does not have

source/firm.c

@@ -1,5 +1,23 @@
 /*
-*   firm.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #include "firm.h"
@@ -8,35 +26,47 @@
 #include "fs.h"
 #include "patches.h"
 #include "memory.h"
+#include "cache.h"
 #include "emunand.h"
 #include "crypto.h"
 #include "draw.h"
-#include "screeninit.h"
+#include "screen.h"
 #include "buttons.h"
+#include "pin.h"
+#include "i2c.h"
 #include "../build/injector.h"
 
+extern u16 launchedFirmTIDLow[8]; //defined in start.s
+
 static firmHeader *const firm = (firmHeader *)0x24000000;
 static const firmSectionHeader *section;
 
 u32 config,
-    console,
-    firmSource,
     emuOffset;
 
+bool isN3DS, isDevUnit;
+
+FirmwareSource firmSource;
+
+PINData pin;
+
 void main(void)
 {
-    u32 bootType,
+    bool isFirmlaunch,
-        firmType,
+         isA9lh;
-        nandType,
+
-        a9lhMode,
+    u32 newConfig,
-        updatedSys,
+        emuHeader;
-        needConfig,
+
-        newConfig,
+    FirmwareType firmType;
-        emuHeader,
+    FirmwareSource nandType;
-        chronoStarted = 0;
+    ConfigurationStatus needConfig;
 
     //Detect the console being used
-    console = PDN_MPCORE_CFG == 7;
+    isN3DS = PDN_MPCORE_CFG == 7;
+
+    //Detect dev units
+    isDevUnit = CFG_UNITINFO != 0;
 
     //Mount filesystems. CTRNAND will be mounted only if/when needed
     mountFs();
@@ -44,78 +74,47 @@ void main(void)
     const char configPath[] = "/luma/config.bin";
 
     //Attempt to read the configuration file
-    needConfig = fileRead(&config, configPath) ? 1 : 2;
+    needConfig = fileRead(&config, configPath) ? MODIFY_CONFIGURATION : CREATE_CONFIGURATION;
 
     //Determine if this is a firmlaunch boot
-    if(*(vu8 *)0x23F00005)
+    if(launchedFirmTIDLow[5] != 0)
     {
-        if(needConfig == 2) mcuReboot();
+        if(needConfig == CREATE_CONFIGURATION) mcuReboot();
 
-        bootType = 1;
+        isFirmlaunch = true;
 
         //'0' = NATIVE_FIRM, '1' = TWL_FIRM, '2' = AGB_FIRM
-        firmType = *(vu8 *)0x23F00009 == '3' ? 3 : *(vu8 *)0x23F00005 - '0';
+        firmType = launchedFirmTIDLow[7] == u'3' ? SAFE_FIRM : (FirmwareType)(launchedFirmTIDLow[5] - u'0');
 
-        nandType = BOOTCONFIG(0, 3);
+        nandType = (FirmwareSource)BOOTCONFIG(0, 3);
-        firmSource = BOOTCONFIG(2, 1);
+        firmSource = (FirmwareSource)BOOTCONFIG(2, 1);
-        a9lhMode = BOOTCONFIG(3, 1);
+        isA9lh = BOOTCONFIG(3, 1) != 0;
-        updatedSys = a9lhMode && CONFIG(1);
     }
     else
     {
         //Get pressed buttons
         u32 pressed = HID_PAD;
 
-        //If no configuration file exists or SELECT is held, load configuration menu
+        isFirmlaunch = false;
-        if(needConfig == 2 || ((pressed & BUTTON_SELECT) && !(pressed & BUTTON_L1)))
+        firmType = NATIVE_FIRM;
-        {
-            configureCFW(configPath);
-
-            //Zero the last booted FIRM flag
-            CFG_BOOTENV = 0;
-
-            chronoStarted = 1;
-            chrono(0);
-            chrono(2);
-
-            //Update pressed buttons
-            pressed = HID_PAD;
-        }
-
-        bootType = 0;
-        firmType = 0;
 
         //Determine if booting with A9LH
-        u32 a9lhBoot = !PDN_SPI_CNT;
+        isA9lh = !PDN_SPI_CNT;
 
-        //Determine if A9LH is installed and the user has an updated sysNAND
+        //Determine if the user chose to use the SysNAND FIRM as default for a R boot
-        if(a9lhBoot || CONFIG(2))
+        bool useSysAsDefault = isA9lh ? CONFIG(1) : false;
-        {
-            a9lhMode = 1;
-            updatedSys = CONFIG(1);
-        }
-        else
-        {
-            a9lhMode = 0;
-            updatedSys = 0;
-        }
 
-        newConfig = a9lhMode << 3;
+        newConfig = (u32)isA9lh << 3;
-
-        if(a9lhBoot)
-        {
-            //Retrieve the last booted FIRM
-            u32 previousFirm = CFG_BOOTENV;
 
         //If it's a MCU reboot, try to force boot options
-            if(previousFirm)
+        if(isA9lh && CFG_BOOTENV)
         {
             //Always force a sysNAND boot when quitting AGB_FIRM
-                if(previousFirm == 7)
+            if(CFG_BOOTENV == 7)
             {
-                    nandType = 0;
+                nandType = FIRMWARE_SYSNAND;
-                    firmSource = updatedSys ? 0 : BOOTCONFIG(2, 1);
+                firmSource = useSysAsDefault ? FIRMWARE_SYSNAND : (FirmwareSource)BOOTCONFIG(2, 1);
-                    needConfig = 0;
+                needConfig = DONT_CONFIGURE;
 
                 //Flag to prevent multiple boot options-forcing
                 newConfig |= 1 << 4;
@@ -125,72 +124,88 @@ void main(void)
                or the no-forcing flag is set */
             else if(!pressed && !BOOTCONFIG(4, 1))
             {
-                    nandType = BOOTCONFIG(0, 3);
+                nandType = (FirmwareSource)BOOTCONFIG(0, 3);
-                    firmSource = BOOTCONFIG(2, 1);
+                firmSource = (FirmwareSource)BOOTCONFIG(2, 1);
-                    needConfig = 0;
+                needConfig = DONT_CONFIGURE;
-                }
-            }
-
-            //If the SAFE MODE combo is held, force a sysNAND boot
-            else if(pressed == SAFE_MODE)
-            {
-                a9lhMode = 2;
-                nandType = 0;
-                firmSource = 0;
-                needConfig = 0;
             }
         }
 
         //Boot options aren't being forced
-        if(needConfig)
+        if(needConfig != DONT_CONFIGURE)
         {
-            /* If L and R/A/Select or one of the single payload buttons are pressed,
+            bool pinExists = CONFIG(7) && readPin(&pin);
-               chainload an external payload */
-            if((pressed & SINGLE_PAYLOAD_BUTTONS) || ((pressed & BUTTON_L1) && (pressed & L_PAYLOAD_BUTTONS)))
-                loadPayload(pressed);
 
-            //If screens are inited or the corresponding option is set, load splash screen
+            //If we get here we should check the PIN (if it exists) in all cases
-            if((PDN_GPU_CNT != 1 || CONFIG(7)) && loadSplash())
+            if(pinExists) verifyPin(&pin, true);
+
+            //If no configuration file exists or SELECT is held, load configuration menu
+            bool shouldLoadConfigurationMenu = needConfig == CREATE_CONFIGURATION || ((pressed & BUTTON_SELECT) && !(pressed & BUTTON_L1));
+
+            if(shouldLoadConfigurationMenu)
             {
-                chronoStarted = 2;
+                configureCFW(configPath);
-                chrono(0);
+
+                if(!pinExists && CONFIG(7)) pin = newPin();
+
+                chrono(2);
+
+                //Update pressed buttons
+                pressed = HID_PAD;
             }
 
+            if(isA9lh && !CFG_BOOTENV && pressed == SAFE_MODE)
+            {
+                nandType = FIRMWARE_SYSNAND;
+                firmSource = FIRMWARE_SYSNAND;
+            }
+            else
+            {
+                if(CONFIG(6) && loadSplash()) pressed = HID_PAD;
+
+                /* If L and R/A/Select or one of the single payload buttons are pressed,
+                   chainload an external payload (the PIN, if any, has been verified)*/
+                bool shouldLoadPayload = (pressed & SINGLE_PAYLOAD_BUTTONS) || ((pressed & BUTTON_L1) && (pressed & L_PAYLOAD_BUTTONS));
+
+                if(shouldLoadPayload) loadPayload(pressed);
+
+                if(!CONFIG(6)) loadSplash();
+
                 //If R is pressed, boot the non-updated NAND with the FIRM of the opposite one
                 if(pressed & BUTTON_R1)
                 {
-                nandType = updatedSys;
+                    nandType = (useSysAsDefault) ? FIRMWARE_EMUNAND : FIRMWARE_SYSNAND;
-                firmSource = !nandType;
+                    firmSource = (useSysAsDefault) ? FIRMWARE_SYSNAND : FIRMWARE_EMUNAND;
                 }
 
                 /* Else, boot the NAND the user set to autoboot or the opposite one, depending on L,
                    with their own FIRM */
                 else
                 {
-                nandType = CONFIG(0) != !(pressed & BUTTON_L1);
+                    nandType = (CONFIG(0) != !(pressed & BUTTON_L1)) ? FIRMWARE_EMUNAND : FIRMWARE_SYSNAND;
                     firmSource = nandType;
                 }
 
                 /* If we're booting emuNAND the second emuNAND is set as default and B isn't pressed,
                    or vice-versa, boot the second emuNAND */
-            if(nandType && (CONFIG(3) == !(pressed & BUTTON_B))) nandType = 2;
+                if(nandType != FIRMWARE_SYSNAND && (CONFIG(2) == !(pressed & BUTTON_B))) nandType = FIRMWARE_EMUNAND2;
+            }
         }
     }
 
     //If we need to boot emuNAND, make sure it exists
-    if(nandType)
+    if(nandType != FIRMWARE_SYSNAND)
     {
         locateEmuNAND(&emuOffset, &emuHeader, &nandType);
-        if(!nandType) firmSource = 0;
+        if(nandType == FIRMWARE_SYSNAND) firmSource = FIRMWARE_SYSNAND;
     }
 
     //Same if we're using emuNAND as the FIRM source
-    else if(firmSource)
+    else if(firmSource != FIRMWARE_SYSNAND)
         locateEmuNAND(&emuOffset, &emuHeader, &firmSource);
 
-    if(!bootType)
+    if(!isFirmlaunch)
     {
-        newConfig |= nandType | (firmSource << 2);
+        newConfig |= (u32)nandType | ((u32)firmSource << 2);
 
         /* If the boot configuration is different from previously, overwrite it.
            Just the no-forcing flag being set is not enough */
@@ -199,88 +214,63 @@ void main(void)
             //Preserve user settings (last 26 bits)
             newConfig |= config & 0xFFFFFFC0;
 
-            fileWrite(&newConfig, configPath, 4);
+            if(!fileWrite(&newConfig, configPath, 4))
+                error("Error writing the configuration file");
         }
     }
 
-    loadFirm(firmType, !firmType && updatedSys == !firmSource);
+    u32 firmVersion = loadFirm(firmType);
 
     switch(firmType)
     {
-        case 0:
+        case NATIVE_FIRM:
-            patchNativeFirm(nandType, emuHeader, a9lhMode);
+            patchNativeFirm(firmVersion, nandType, emuHeader, isA9lh);
             break;
-        case 3:
+        case SAFE_FIRM:
             patchSafeFirm();
             break;
         default:
-            patchLegacyFirm(firmType);
+            //Skip patching on unsupported O3DS AGB/TWL FIRMs
+            if(isN3DS || firmVersion >= (firmType == TWL_FIRM ? 0x16 : 0xB)) patchLegacyFirm(firmType);
             break;
     }
 
-    if(chronoStarted)
+    launchFirm(firmType, isFirmlaunch);
-    {
-        if(chronoStarted == 2) chrono(3);
-        stopChrono();
-    }
-
-    launchFirm(firmType, bootType);
 }
 
-static inline void loadFirm(u32 firmType, u32 externalFirm)
+static inline u32 loadFirm(FirmwareType firmType)
 {
     section = firm->section;
 
-    u32 externalFirmLoaded = externalFirm &&
+    //Load FIRM from CTRNAND, unless it's an O3DS and we're loading a pre-5.0 NATIVE FIRM
-                             fileRead(firm, "/luma/firmware.bin") &&
+    u32 firmVersion = firmRead(firm, (u32)firmType);
-                             (((u32)section[2].address >> 8) & 0xFF) == (console ? 0x60 : 0x68);
 
-    /* If the conditions to load the external FIRM aren't met, or reading fails, or the FIRM
+    if(!isN3DS && firmType == NATIVE_FIRM && firmVersion < 0x25)
-       doesn't match the console, load FIRM from CTRNAND */
-    if(!externalFirmLoaded)
     {
-        const char *firmFolders[4][2] = {{ "00000002", "20000002" },
+        if(!fileRead(firm, "/luma/firmware.bin") || (((u32)section[2].address >> 8) & 0xFF) != 0x68)
-                                         { "00000102", "20000102" },
+            error("An old unsupported FIRM has been detected.\nCopy firmware.bin in /luma to boot");
-                                         { "00000202", "20000202" },
-                                         { "00000003", "20000003" }};
 
-        firmRead(firm, firmFolders[firmType][console]);
+        //No assumption regarding FIRM version
-        decryptExeFs((u8 *)firm);
+        firmVersion = 0xffffffff;
     }
+    else decryptExeFs((u8 *)firm);
+
+    return firmVersion;
 }
 
-static inline void patchNativeFirm(u32 nandType, u32 emuHeader, u32 a9lhMode)
+static inline void patchNativeFirm(u32 firmVersion, FirmwareSource nandType, u32 emuHeader, bool isA9lh)
 {
     u8 *arm9Section = (u8 *)firm + section[2].offset;
 
-    u32 nativeFirmType;
+    if(isN3DS)
-
-    if(console)
     {
-        //Determine the NATIVE_FIRM version
-        switch(arm9Section[0x53])
-        {
-            case 0xFF:
-                nativeFirmType = 0;
-                break;
-            case '1':
-                nativeFirmType = 2;
-                break;
-            default:
-                nativeFirmType = 1;
-                break;
-        }
-
         //Decrypt ARM9Bin and patch ARM9 entrypoint to skip arm9loader
-        arm9Loader(arm9Section, nativeFirmType);
+        arm9Loader(arm9Section);
         firm->arm9Entry = (u8 *)0x801B01C;
     }
-    else
+
-    {
+    //Sets the 7.x NCCH KeyX and the 6.x gamecard save data KeyY on >= 6.0 O3DS FIRMs, if not using A9LH
-        //Determine if we're booting the 9.0 FIRM
+    else if(!isA9lh && firmVersion >= 0x29) setRSAMod0DerivedKeys();
-        u8 firm90Hash[0x10] = {0x27, 0x2D, 0xFE, 0xEB, 0xAF, 0x3F, 0x6B, 0x3B, 0xF5, 0xDE, 0x4C, 0x41, 0xDE, 0x95, 0x27, 0x6A};
-        nativeFirmType = memcmp(section[2].hash, firm90Hash, 0x10) != 0;
-    }
 
     //Find the Process9 .code location, size and memory address
     u32 process9Size,
@@ -291,48 +281,49 @@ static inline void patchNativeFirm(u32 nandType, u32 emuHeader, u32 a9lhMode)
     patchSignatureChecks(process9Offset, process9Size);
 
     //Apply emuNAND patches
-    if(nandType)
+    if(nandType != FIRMWARE_SYSNAND)
     {
         u32 branchAdditive = (u32)firm + section[2].offset - (u32)section[2].address;
         patchEmuNAND(arm9Section, section[2].size, process9Offset, process9Size, emuOffset, emuHeader, branchAdditive);
     }
 
     //Apply FIRM0/1 writes patches on sysNAND to protect A9LH
-    else if(a9lhMode) patchFirmWrites(process9Offset, process9Size);
+    else if(isA9lh) patchFirmWrites(process9Offset, process9Size);
 
-    //Apply firmlaunch patches, not on 9.0 FIRM as it breaks firmlaunchhax
+    //Apply firmlaunch patches
-    if(nativeFirmType || a9lhMode == 2) patchFirmlaunches(process9Offset, process9Size, process9MemAddr);
+    patchFirmlaunches(process9Offset, process9Size, process9MemAddr);
 
-    if(nativeFirmType == 1)
+    //11.0 FIRM patches
+    if(firmVersion >= (isN3DS ? 0x21 : 0x52))
     {
-        //Apply anti-anti-DG patches for >= 11.0 firmwares
+        //Apply anti-anti-DG patches
         patchTitleInstallMinVersionCheck(process9Offset, process9Size);
 
-        //Does nothing if svcBackdoor is still there
+        //Restore svcBackdoor
         reimplementSvcBackdoor((u8 *)firm + section[1].offset, section[1].size);
     }
 }
 
-static inline void patchLegacyFirm(u32 firmType)
+static inline void patchLegacyFirm(FirmwareType firmType)
 {
-    //On N3DS, decrypt ARM9Bin and patch ARM9 entrypoint to skip arm9loader
+    if(isN3DS)
-    if(console)
     {
-        arm9Loader((u8 *)firm + section[3].offset, 0);
+        //Decrypt ARM9Bin and patch ARM9 entrypoint to skip arm9loader
+        arm9Loader((u8 *)firm + section[3].offset);
         firm->arm9Entry = (u8 *)0x801301C;
     }
 
-    applyLegacyFirmPatches((u8 *)firm, firmType, console);
+    applyLegacyFirmPatches((u8 *)firm, firmType);
 }
 
 static inline void patchSafeFirm(void)
 {
     u8 *arm9Section = (u8 *)firm + section[2].offset;
 
-    if(console)
+    if(isN3DS)
     {
         //Decrypt ARM9Bin and patch ARM9 entrypoint to skip arm9loader
-        arm9Loader(arm9Section, 0);
+        arm9Loader(arm9Section);
         firm->arm9Entry = (u8 *)0x801B01C;
 
         patchFirmWrites(arm9Section, section[2].size);
@@ -352,11 +343,11 @@ static inline void copySection0AndInjectLoader(void)
     memcpy(section[0].address + loaderOffset + injector_size, arm11Section0 + loaderOffset + loaderSize, section[0].size - (loaderOffset + loaderSize));
 }
 
-static inline void launchFirm(u32 firmType, u32 bootType)
+static inline void launchFirm(FirmwareType firmType, bool isFirmlaunch)
 {
     //If we're booting NATIVE_FIRM, section0 needs to be copied separately to inject 3ds_injector
     u32 sectionNum;
-    if(!firmType)
+    if(firmType == NATIVE_FIRM)
     {
         copySection0AndInjectLoader();
         sectionNum = 1;
@@ -369,7 +360,7 @@ static inline void launchFirm(u32 firmType, u32 bootType)
 
     //Determine the ARM11 entry to use
     vu32 *arm11;
-    if(bootType) arm11 = (u32 *)0x1FFFFFFC;
+    if(isFirmlaunch) arm11 = (u32 *)0x1FFFFFFC;
     else
     {
         deinitScreens();
@@ -379,6 +370,9 @@ static inline void launchFirm(u32 firmType, u32 bootType)
     //Set ARM11 kernel entrypoint
     *arm11 = (u32)firm->arm11Entry;
 
+    flushEntireDCache(); //Ensure that all memory transfers have completed and that the data cache has been flushed 
+    flushEntireICache();
+
     //Final jump to ARM9 kernel
     ((void (*)())firm->arm9Entry)();
 }

source/firm.h

@@ -1,5 +1,23 @@
 /*
-*   firm.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
@@ -9,6 +27,7 @@
 #define PDN_MPCORE_CFG (*(vu32 *)0x10140FFC)
 #define PDN_SPI_CNT    (*(vu32 *)0x101401C0)
 #define CFG_BOOTENV    (*(vu32 *)0x10010000)
+#define CFG_UNITINFO   (*(vu8 *)0x10010010)
 
 //FIRM Header layout
 typedef struct firmSectionHeader {
@@ -28,9 +47,16 @@ typedef struct firmHeader {
     firmSectionHeader section[4];
 } firmHeader;
 
-static inline void loadFirm(u32 firmType, u32 externalFirm);
+typedef enum ConfigurationStatus
-static inline void patchNativeFirm(u32 nandType, u32 emuHeader, u32 a9lhMode);
+{
-static inline void patchLegacyFirm(u32 firmType);
+    DONT_CONFIGURE = 0,
+    MODIFY_CONFIGURATION = 1,
+    CREATE_CONFIGURATION = 2
+} ConfigurationStatus;
+ 
+static inline u32 loadFirm(FirmwareType firmType);
+static inline void patchNativeFirm(u32 firmVersion, FirmwareSource nandType, u32 emuHeader, bool isA9lh);
+static inline void patchLegacyFirm(FirmwareType firmType);
 static inline void patchSafeFirm(void);
 static inline void copySection0AndInjectLoader(void);
-static inline void launchFirm(u32 sectionNum, u32 bootType);
+static inline void launchFirm(FirmwareType firmType, bool isFirmlaunch);

source/fs.c

@@ -1,10 +1,29 @@
 /*
-*   fs.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #include "fs.h"
 #include "memory.h"
-#include "screeninit.h"
+#include "cache.h"
+#include "screen.h"
 #include "fatfs/ff.h"
 #include "buttons.h"
 #include "../build/loader.h"
@@ -12,12 +31,10 @@
 static FATFS sdFs,
              nandFs;
 
-u32 mountFs(void)
+void mountFs(void)
 {
-    if(f_mount(&sdFs, "0:", 1) != FR_OK) return 0;
+    f_mount(&sdFs, "0:", 1);
     f_mount(&nandFs, "1:", 0);
-
-    return 1;
 }
 
 u32 fileRead(void *dest, const char *path)
@@ -29,6 +46,7 @@ u32 fileRead(void *dest, const char *path)
     {
         unsigned int read;
         size = f_size(&file);
+        if(dest != NULL)
             f_read(&file, dest, size, &read);
         f_close(&file);
     }
@@ -37,7 +55,12 @@ u32 fileRead(void *dest, const char *path)
     return size;
 }
 
-void fileWrite(const void *buffer, const char *path, u32 size)
+u32 getFileSize(const char *path)
+{
+    return fileRead(NULL, path);
+}
+
+bool fileWrite(const void *buffer, const char *path, u32 size)
 {
     FIL file;
 
@@ -46,7 +69,16 @@ void fileWrite(const void *buffer, const char *path, u32 size)
         unsigned int written;
         f_write(&file, buffer, size, &written);
         f_close(&file);
+
+        return true;
     }
+
+    return false;
+}
+
+void createDirectory(const char *path)
+{
+    f_mkdir(path);
 }
 
 void loadPayload(u32 pressed)
@@ -76,7 +108,7 @@ void loadPayload(u32 pressed)
     {
         initScreens();
 
-        u32 *const loaderAddress = (u32 *)0x24FFFB00;
+        u32 *const loaderAddress = (u32 *)0x24FFFF00;
 
         memcpy(loaderAddress, loader, loader_size);
 
@@ -85,21 +117,29 @@ void loadPayload(u32 pressed)
 
         loaderAddress[1] = fileRead((void *)0x24F00000, path);
 
+        flushDCacheRange(loaderAddress, loader_size);
+        flushICacheRange(loaderAddress, loader_size);
+
         ((void (*)())loaderAddress)();
     }
 }
 
-void firmRead(void *dest, const char *firmFolder)
+u32 firmRead(void *dest, u32 firmType)
 {
+    const char *firmFolders[4][2] = {{ "00000002", "20000002" },
+                                    { "00000102", "20000102" },
+                                    { "00000202", "20000202" },
+                                    { "00000003", "20000003" }};
+
     char path[48] = "1:/title/00040138/00000000/content";
-    memcpy(&path[18], firmFolder, 8);
+    memcpy(&path[18], firmFolders[firmType][isN3DS ? 1 : 0], 8);
 
     DIR dir;
     FILINFO info;
 
     f_opendir(&dir, path);
 
-    u32 id = 0xFFFFFFFF;
+    u32 firmVersion = 0xFFFFFFFF;
 
     //Parse the target directory
     while(f_readdir(&dir, &info) == FR_OK && info.fname[0])
@@ -108,15 +148,15 @@ void firmRead(void *dest, const char *firmFolder)
         if(info.altname[9] != 'A') continue;
 
         //Convert the .app name to an integer
-        u32 tempId = 0;
+        u32 tempVersion = 0;
         for(char *tmp = info.altname; *tmp != '.'; tmp++)
         {
-            tempId <<= 4;
+            tempVersion <<= 4;
-            tempId += *tmp > '9' ? *tmp - 'A' + 10 : *tmp - '0';
+            tempVersion += *tmp > '9' ? *tmp - 'A' + 10 : *tmp - '0';
         }
 
         //Found an older cxi
-        if(tempId < id) id = tempId;
+        if(tempVersion < firmVersion) firmVersion = tempVersion;
     }
 
     f_closedir(&dir);
@@ -128,12 +168,15 @@ void firmRead(void *dest, const char *firmFolder)
     u32 i = 42;
 
     //Convert back the .app name from integer to array
-    while(id)
+    u32 tempVersion = firmVersion;
+    while(tempVersion)
     {
         static const char hexDigits[] = "0123456789ABCDEF";
-        path[i--] = hexDigits[id & 0xF];
+        path[i--] = hexDigits[tempVersion & 0xF];
-        id >>= 4;
+        tempVersion >>= 4;
     }
 
     fileRead(dest, path);
+
+    return firmVersion;
 }

source/fs.h

@@ -1,5 +1,23 @@
 /*
-*   fs.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
@@ -8,8 +26,12 @@
 
 #define PATTERN(a)      a "_*.bin"
 
-u32 mountFs(void);
+extern bool isN3DS;
+
+void mountFs(void);
 u32 fileRead(void *dest, const char *path);
-void fileWrite(const void *buffer, const char *path, u32 size);
+u32 getFileSize(const char *path);
+bool fileWrite(const void *buffer, const char *path, u32 size);
+void createDirectory(const char *path);
 void loadPayload(u32 pressed);
-void firmRead(void *dest, const char *firmFolder);
+u32 firmRead(void *dest, u32 firmType);

source/i2c.c

@@ -1,3 +1,25 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
 #include "i2c.h"
 
 //-----------------------------------------------------------------------------

source/i2c.h

@@ -1,3 +1,29 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
+*	Thanks to the everyone who contributed in the development of this file 
+*/
+
 #pragma once
 
 #include "types.h"

source/memory.c

@@ -1,7 +1,29 @@
 /*
-*   memory.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
 *
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+
+/*
 *   Quick Search algorithm adapted from http://igm.univ-mlv.fr/~lecroq/string/node19.html#SECTION00190
+*   memcpy, memset32 and memcmp adapted from https://github.com/mid-kid/CakesForeveryWan/blob/557a8e8605ab3ee173af6497486e8f22c261d0e2/source/memfuncs.c
 */
 
 #include "memory.h"

source/memory.h

@@ -1,7 +1,29 @@
 /*
-*   memory.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
 *
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+
+/*
 *   Quick Search algorithm adapted from http://igm.univ-mlv.fr/~lecroq/string/node19.html#SECTION00190
+*   memcpy, memset32 and memcmp adapted from https://github.com/mid-kid/CakesForeveryWan/blob/557a8e8605ab3ee173af6497486e8f22c261d0e2/source/memfuncs.c
 */
 
 #pragma once

source/patches.c

@@ -1,5 +1,23 @@
 /*
-*   patches.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #include "patches.h"
@@ -101,7 +119,7 @@ void reimplementSvcBackdoor(u8 *pos, u32 size)
     u32 *svcTable = (u32 *)(pos + *(u32 *)(pos + 0xFFFF0008 - svcOffset - 0xFFF00000 + 8) - 0xFFF00000); //SVC handler address
     while(*svcTable) svcTable++; //Look for SVC0 (NULL)
 
-    if(!svcTable[0x7B])
+    if(svcTable[0x7B] == 0)
     {
         u32 *freeSpace;
         for(freeSpace = exceptionsPage; *freeSpace != 0xFFFFFFFF; freeSpace++);
@@ -121,7 +139,7 @@ void patchTitleInstallMinVersionCheck(u8 *pos, u32 size)
     if(off != NULL) off[4] = 0xE0;
 }
 
-void applyLegacyFirmPatches(u8 *pos, u32 firmType, u32 console)
+void applyLegacyFirmPatches(u8 *pos, FirmwareType firmType)
 {
     const patchData twlPatches[] = {
         {{0x1650C0, 0x165D64}, {{ 6, 0x00, 0x20, 0x4E, 0xB0, 0x70, 0xBD }}, 0},
@@ -141,9 +159,9 @@ void applyLegacyFirmPatches(u8 *pos, u32 firmType, u32 console)
 
     /* Calculate the amount of patches to apply. Only count the boot screen patch for AGB_FIRM
        if the matching option was enabled (keep it as last) */
-    u32 numPatches = firmType == 1 ? (sizeof(twlPatches) / sizeof(patchData)) :
+    u32 numPatches = firmType == TWL_FIRM ? (sizeof(twlPatches) / sizeof(patchData)) :
-                                     (sizeof(agbPatches) / sizeof(patchData) - !CONFIG(6));
+                                            (sizeof(agbPatches) / sizeof(patchData) - !CONFIG(5));
-    const patchData *patches = firmType == 1 ? twlPatches : agbPatches;
+    const patchData *patches = firmType == TWL_FIRM ? twlPatches : agbPatches;
 
     //Patch
     for(u32 i = 0; i < numPatches; i++)
@@ -151,12 +169,12 @@ void applyLegacyFirmPatches(u8 *pos, u32 firmType, u32 console)
         switch(patches[i].type)
         {
             case 0:
-                memcpy(pos + patches[i].offset[console], patches[i].patch.type0 + 1, patches[i].patch.type0[0]);
+                memcpy(pos + patches[i].offset[isN3DS ? 1 : 0], patches[i].patch.type0 + 1, patches[i].patch.type0[0]);
                 break;
             case 2:
-                *(u16 *)(pos + patches[i].offset[console] + 2) = 0;
+                *(u16 *)(pos + patches[i].offset[isN3DS ? 1 : 0] + 2) = 0;
             case 1:
-                *(u16 *)(pos + patches[i].offset[console]) = patches[i].patch.type1;
+                *(u16 *)(pos + patches[i].offset[isN3DS ? 1 : 0]) = patches[i].patch.type1;
                 break;
         }
     }
@@ -167,7 +185,7 @@ u32 getLoader(u8 *pos, u32 *loaderSize)
     u8 *off = pos;
     u32 size;
 
-    while(1)
+    while(true)
     {
         size = *(u32 *)(off + 0x104) * 0x200;
         if(*(u32 *)(off + 0x200) == 0x64616F6C) break;

source/patches.h

@@ -1,5 +1,23 @@
 /*
-*   patches.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
@@ -15,6 +33,8 @@ typedef struct patchData {
     u32 type;
 } patchData;
 
+extern bool isN3DS;
+
 u8 *getProcess9(u8 *pos, u32 size, u32 *process9Size, u32 *process9MemAddr);
 void patchSignatureChecks(u8 *pos, u32 size);
 void patchTitleInstallMinVersionCheck(u8 *pos, u32 size);
@@ -22,5 +42,5 @@ void patchFirmlaunches(u8 *pos, u32 size, u32 process9MemAddr);
 void patchFirmWrites(u8 *pos, u32 size);
 void patchFirmWriteSafe(u8 *pos, u32 size);
 void reimplementSvcBackdoor(u8 *pos, u32 size);
-void applyLegacyFirmPatches(u8 *pos, u32 firmType, u32 console);
+void applyLegacyFirmPatches(u8 *pos, FirmwareType firmType);
 u32 getLoader(u8 *pos, u32 *loaderSize);

source/pin.c

@@ -0,0 +1,173 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
+*   pin.c
+*   Code to manage pin locking for 3ds. By reworks.
+*/
+
+#include "draw.h"
+#include "screen.h"
+#include "utils.h"
+#include "memory.h"
+#include "buttons.h"
+#include "fs.h"
+#include "i2c.h"
+#include "pin.h"
+#include "crypto.h"
+
+bool readPin(PINData *out)
+{
+    u8 __attribute__((aligned(4))) zeroes[16] = {0};
+    u8 __attribute__((aligned(4))) tmp[32] = {0};
+
+    if(fileRead(out, "/luma/pin.bin") != sizeof(PINData)) return false;
+    if(memcmp(out->magic, "PINF", 4) != 0) return false;
+
+    computePINHash(tmp, zeroes, 1);
+    return memcmp(out->testHash, tmp, 32) == 0; //test vector verification (SD card has (or hasn't) been used on another console)
+}
+
+static inline char PINKeyToLetter(u32 pressed)
+{
+    const char keys[] = "AB--------XY";
+
+    u32 i;
+    __asm__ volatile("clz %[i], %[pressed]" : [i] "=r" (i) : [pressed] "r" (pressed));
+
+    return keys[31 - i];
+}
+
+PINData newPin(void)
+{
+    clearScreens();
+
+    drawString("Enter your NEW PIN: ", 10, 10, COLOR_WHITE);
+
+    // Set the default value as 0x00 so we can check if there are any unentered characters.
+    u8 __attribute__((aligned(4))) enteredPassword[16 * ((PIN_LENGTH + 15) / 16)] = {0}; // pad to AES block length
+
+    u32 cnt = 0;
+    int charDrawPos = 20 * SPACING_X;
+
+    while(true)
+    {
+        u32 pressed;
+        do
+        {
+            pressed = waitInput();
+        }
+        while(!(pressed & PIN_BUTTONS & ~BUTTON_START));
+
+        pressed &= PIN_BUTTONS & ~BUTTON_START;
+
+        if(!pressed) continue;
+        char key = PINKeyToLetter(pressed);
+        enteredPassword[cnt++] = (u8)key; // add character to password.
+
+        // visualize character on screen.
+        drawCharacter(key, 10 + charDrawPos, 10, COLOR_WHITE);
+        charDrawPos += 2 * SPACING_X;
+
+        // we leave the rest of the array zeroed out.
+        if(cnt >= PIN_LENGTH)
+        {
+            PINData pin = {0};
+            u8 __attribute__((aligned(4))) tmp[32] = {0};
+            u8 __attribute__((aligned(4))) zeroes[16] = {0};
+
+            memcpy(pin.magic, "PINF", 4);
+            pin.formatVersionMajor = 1;
+            pin.formatVersionMinor = 0;
+
+            computePINHash(tmp, zeroes, 1);
+            memcpy(pin.testHash, tmp, 32);
+
+            computePINHash(tmp, enteredPassword, (PIN_LENGTH + 15) / 16);
+            memcpy(pin.hash, tmp, 32);
+
+            fileWrite(&pin, "/luma/pin.bin", sizeof(PINData));
+            return pin;
+        }
+    }
+    
+    while(HID_PAD & PIN_BUTTONS);
+}
+
+void verifyPin(PINData *in, bool allowQuit)
+{
+    initScreens();
+
+    drawString("Press START to shutdown or enter pin to proceed.", 10, 10, COLOR_WHITE);
+    drawString("Pin: ", 10, 10 + 2 * SPACING_Y, COLOR_WHITE);
+
+    // Set the default characters as 0x00 so we can check if there are any unentered characters.
+    u8 __attribute__((aligned(4))) enteredPassword[16 * ((PIN_LENGTH + 15) / 16)] = {0};
+
+    u32 cnt = 0;
+    bool unlock;
+    int charDrawPos = 5 * SPACING_X;
+
+    while(true)
+    {
+        u32 pressed;
+        do
+        {
+            pressed = waitInput();
+        }
+        while(!(pressed & PIN_BUTTONS));
+
+        pressed &= PIN_BUTTONS;// & ~BUTTON_START;
+        if(!allowQuit) pressed &= ~BUTTON_START;
+        if(!pressed) continue;
+
+        if(pressed & BUTTON_START) mcuPowerOff();
+
+        char key = PINKeyToLetter(pressed);
+        enteredPassword[cnt++] = (u8)key; // add character to password.
+
+        // visualize character on screen.
+        drawCharacter(key, 10 + charDrawPos, 10 + 2 * SPACING_Y, COLOR_WHITE);
+        charDrawPos += 2 * SPACING_X;
+
+        if(cnt >= PIN_LENGTH)
+        {
+            u8 __attribute__((aligned(4))) tmp[32] = {0};
+
+            computePINHash(tmp, enteredPassword, (PIN_LENGTH + 15) / 16);
+            unlock = memcmp(in->hash, tmp, 32) == 0;
+
+            if(!unlock)
+            {
+                charDrawPos = 5 * SPACING_X;
+                cnt = 0;
+
+                clearScreens();
+
+                drawString("Press START to shutdown or enter pin to proceed.", 10, 10, COLOR_WHITE);
+                drawString("Pin: ", 10, 10 + 2 * SPACING_Y, COLOR_WHITE);
+                drawString("Wrong pin! Try again!", 10, 10 + 3 * SPACING_Y, COLOR_RED); 
+            }
+            else break;
+        }
+    }
+}

source/pin.h

@@ -0,0 +1,49 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
+*   pin.h
+*
+*   Code to manage pin locking for 3ds. By reworks.
+*/
+
+#pragma once
+
+#include "types.h"
+
+#ifndef PIN_LENGTH
+    #define PIN_LENGTH  4
+#endif
+
+typedef struct __attribute__((packed))
+{
+    char magic[4];
+    u16 formatVersionMajor, formatVersionMinor;
+
+    u8 testHash[32];
+    u8 hash[32];
+} PINData;
+
+bool readPin(PINData* out);
+
+PINData newPin(void);
+void verifyPin(PINData *in, bool allowQuit);

source/screen.c

@@ -0,0 +1,259 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
+*   Screen init code by dark_samus, bil1s, Normmatt, delebile and others.
+*   Screen deinit code by tiniVi.
+*/
+
+#include "screen.h"
+#include "config.h"
+#include "memory.h"
+#include "cache.h"
+#include "draw.h"
+#include "i2c.h"
+
+vu32 *const arm11Entry = (vu32 *)0x1FFFFFF8;
+static const u32 brightness[4] = {0x5F, 0x4C, 0x39, 0x26};
+
+void  __attribute__((naked)) arm11Stub(void)
+{
+    //Disable interrupts
+    __asm(".word 0xF10C01C0");
+
+    //Wait for the entry to be set
+    while(*arm11Entry == ARM11_STUB_ADDRESS);
+
+    //Jump to it
+    ((void (*)())*arm11Entry)();
+}
+
+static void invokeArm11Function(void (*func)())
+{
+    static bool hasCopiedStub = false;
+    if(!hasCopiedStub)
+    {
+        memcpy((void *)ARM11_STUB_ADDRESS, arm11Stub, 0x30);
+        flushDCacheRange((void *)ARM11_STUB_ADDRESS, 0x30);
+        hasCopiedStub = true;
+    }
+
+    *arm11Entry = (u32)func;
+    while(*arm11Entry);
+    *arm11Entry = ARM11_STUB_ADDRESS;
+}
+
+void deinitScreens(void)
+{
+    void __attribute__((naked)) ARM11(void)
+    {
+        //Disable interrupts
+        __asm(".word 0xF10C01C0");
+
+        //Shutdown LCDs
+        *(vu32 *)0x10202A44 = 0;
+        *(vu32 *)0x10202244 = 0;
+        *(vu32 *)0x10202014 = 0;
+
+        WAIT_FOR_ARM9();
+    }
+
+    if(PDN_GPU_CNT != 1) invokeArm11Function(ARM11);
+}
+
+void updateBrightness(u32 brightnessIndex)
+{
+    static u32 brightnessLevel;
+    brightnessLevel = brightness[brightnessIndex];
+
+    void __attribute__((naked)) ARM11(void)
+    {
+        //Disable interrupts
+        __asm(".word 0xF10C01C0");
+
+        //Change brightness
+        *(vu32 *)0x10202240 = brightnessLevel;
+        *(vu32 *)0x10202A40 = brightnessLevel;
+
+        WAIT_FOR_ARM9();
+    }
+
+    flushDCacheRange(&brightnessLevel, 4);
+    invokeArm11Function(ARM11);
+}
+
+void clearScreens(void)
+{   
+    void __attribute__((naked)) ARM11(void)
+    {
+        //Disable interrupts
+        __asm(".word 0xF10C01C0");
+
+        //Setting up two simultaneous memory fills using the GPU
+        vu32 *REGs_PSC0 = (vu32 *)0x10400010;
+        REGs_PSC0[0] = (u32)fb->top_left >> 3; //Start address
+        REGs_PSC0[1] = (u32)(fb->top_left + 0x46500) >> 3; //End address
+        REGs_PSC0[2] = 0; //Fill value
+        REGs_PSC0[3] = (2 << 8) | 1; //32-bit pattern; start
+
+        vu32 *REGs_PSC1 = (vu32 *)0x10400020;
+        REGs_PSC1[0] = (u32)fb->bottom >> 3; //Start address
+        REGs_PSC1[1] = (u32)(fb->bottom + 0x38400) >> 3; //End address
+        REGs_PSC1[2] = 0; //Fill value
+        REGs_PSC1[3] = (2 << 8) | 1; //32-bit pattern; start
+
+        while(!((REGs_PSC0[3] & 2) && (REGs_PSC1[3] & 2)));
+
+        if(fb->top_right != fb->top_left)
+        {
+            REGs_PSC0[0] = (u32)fb->top_right >> 3; //Start address
+            REGs_PSC0[1] = (u32)(fb->top_right + 0x46500) >> 3; //End address
+            REGs_PSC0[2] = 0; //Fill value
+            REGs_PSC0[3] = (2 << 8) | 1; //32-bit pattern; start
+
+            while(!(REGs_PSC0[3] & 2));
+        }
+
+        WAIT_FOR_ARM9();
+    }
+
+    flushDCacheRange((void *)fb, sizeof(struct fb));
+    invokeArm11Function(ARM11);
+}
+
+void initScreens(void)
+{
+    void __attribute__((naked)) ARM11(void)
+    {
+        //Disable interrupts
+        __asm(".word 0xF10C01C0");
+
+        u32 brightnessLevel = brightness[MULTICONFIG(0)];
+        
+        *(vu32 *)0x10141200 = 0x1007F;
+        *(vu32 *)0x10202014 = 0x00000001;
+        *(vu32 *)0x1020200C &= 0xFFFEFFFE;
+        *(vu32 *)0x10202240 = brightnessLevel;
+        *(vu32 *)0x10202A40 = brightnessLevel;
+        *(vu32 *)0x10202244 = 0x1023E;
+        *(vu32 *)0x10202A44 = 0x1023E;
+
+        // Top screen
+        *(vu32 *)0x10400400 = 0x000001c2;
+        *(vu32 *)0x10400404 = 0x000000d1;
+        *(vu32 *)0x10400408 = 0x000001c1;
+        *(vu32 *)0x1040040c = 0x000001c1;
+        *(vu32 *)0x10400410 = 0x00000000;
+        *(vu32 *)0x10400414 = 0x000000cf;
+        *(vu32 *)0x10400418 = 0x000000d1;
+        *(vu32 *)0x1040041c = 0x01c501c1;
+        *(vu32 *)0x10400420 = 0x00010000;
+        *(vu32 *)0x10400424 = 0x0000019d;
+        *(vu32 *)0x10400428 = 0x00000002;
+        *(vu32 *)0x1040042c = 0x00000192;
+        *(vu32 *)0x10400430 = 0x00000192;
+        *(vu32 *)0x10400434 = 0x00000192;
+        *(vu32 *)0x10400438 = 0x00000001;
+        *(vu32 *)0x1040043c = 0x00000002;
+        *(vu32 *)0x10400440 = 0x01960192;
+        *(vu32 *)0x10400444 = 0x00000000;
+        *(vu32 *)0x10400448 = 0x00000000;
+        *(vu32 *)0x1040045C = 0x00f00190;
+        *(vu32 *)0x10400460 = 0x01c100d1;
+        *(vu32 *)0x10400464 = 0x01920002;
+        *(vu32 *)0x10400468 = 0x18300000;
+        *(vu32 *)0x10400470 = 0x80341;
+        *(vu32 *)0x10400474 = 0x00010501;
+        *(vu32 *)0x10400478 = 0;
+        *(vu32 *)0x10400490 = 0x000002D0;
+        *(vu32 *)0x1040049C = 0x00000000;
+
+        // Disco register
+        for(u32 i = 0; i < 256; i++)
+           *(vu32 *)0x10400484 = 0x10101 * i;
+
+        // Bottom screen
+        *(vu32 *)0x10400500 = 0x000001c2;
+        *(vu32 *)0x10400504 = 0x000000d1;
+        *(vu32 *)0x10400508 = 0x000001c1;
+        *(vu32 *)0x1040050c = 0x000001c1;
+        *(vu32 *)0x10400510 = 0x000000cd;
+        *(vu32 *)0x10400514 = 0x000000cf;
+        *(vu32 *)0x10400518 = 0x000000d1;
+        *(vu32 *)0x1040051c = 0x01c501c1;
+        *(vu32 *)0x10400520 = 0x00010000;
+        *(vu32 *)0x10400524 = 0x0000019d;
+        *(vu32 *)0x10400528 = 0x00000052;
+        *(vu32 *)0x1040052c = 0x00000192;
+        *(vu32 *)0x10400530 = 0x00000192;
+        *(vu32 *)0x10400534 = 0x0000004f;
+        *(vu32 *)0x10400538 = 0x00000050;
+        *(vu32 *)0x1040053c = 0x00000052;
+        *(vu32 *)0x10400540 = 0x01980194;
+        *(vu32 *)0x10400544 = 0x00000000;
+        *(vu32 *)0x10400548 = 0x00000011;
+        *(vu32 *)0x1040055C = 0x00f00140;
+        *(vu32 *)0x10400560 = 0x01c100d1;
+        *(vu32 *)0x10400564 = 0x01920052;
+        *(vu32 *)0x10400568 = 0x18300000 + 0x46500;
+        *(vu32 *)0x10400570 = 0x80301;
+        *(vu32 *)0x10400574 = 0x00010501;
+        *(vu32 *)0x10400578 = 0;
+        *(vu32 *)0x10400590 = 0x000002D0;
+        *(vu32 *)0x1040059C = 0x00000000;
+
+        // Disco register
+        for(u32 i = 0; i < 256; i++)
+           *(vu32 *)0x10400584 = 0x10101 * i;
+
+        *(vu32 *)0x10400468 = 0x18300000;
+        *(vu32 *)0x1040046c = 0x18300000;
+        *(vu32 *)0x10400494 = 0x18300000;
+        *(vu32 *)0x10400498 = 0x18300000;
+        *(vu32 *)0x10400568 = 0x18346500;
+        *(vu32 *)0x1040056c = 0x18346500;
+
+        //Set CakeBrah framebuffers
+        fb->top_left = (u8 *)0x18300000;
+        fb->top_right = (u8 *)0x18300000;
+        fb->bottom = (u8 *)0x18346500;
+
+        WAIT_FOR_ARM9();
+    }
+
+    if(PDN_GPU_CNT == 1)
+    {
+        flushDCacheRange(&config, 4);
+        flushDCacheRange((void *)fb, sizeof(struct fb));
+        invokeArm11Function(ARM11);
+
+        clearScreens();
+
+        //Turn on backlight
+        i2cWriteRegister(I2C_DEV_MCU, 0x22, 0x2A);
+    }
+    else
+    {
+        clearScreens();
+        updateBrightness(MULTICONFIG(0));
+    }
+}

source/screen.h

@@ -0,0 +1,45 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
+*/
+
+/*
+*   Screen init code by dark_samus, bil1s, Normmatt, delebile and others.
+*   Screen deinit code by tiniVi.
+*/
+
+#pragma once
+
+#include "types.h"
+
+#define PDN_GPU_CNT         (*(vu8 *)0x10141200)
+#define ARM11_STUB_ADDRESS  (0x25000000 - 0x30) //It's currently only 0x28 bytes large. We're putting 0x30 just to be sure here
+#define WAIT_FOR_ARM9()     *arm11Entry = 0; while(!*arm11Entry); ((void (*)())*arm11Entry)();
+
+static volatile struct fb {
+     u8 *top_left;
+     u8 *top_right;
+     u8 *bottom;
+} *const fb = (volatile struct fb *)0x23FFFE00;
+
+void deinitScreens(void);
+void updateBrightness(u32 brightnessIndex);
+void clearScreens(void);
+void initScreens(void);

source/screeninit.c

@@ -1,69 +0,0 @@
-/*
-*   screeninit.c
-*
-*   Screen init code by dark_samus, bil1s, Normmatt, delebile and others.
-*   Screen deinit code by tiniVi.
-*/
-
-#include "screeninit.h"
-#include "config.h"
-#include "memory.h"
-#include "draw.h"
-#include "i2c.h"
-#include "../build/screeninit.h"
-
-vu32 *arm11Entry = (u32 *)0x1FFFFFF8;
-
-void deinitScreens(void)
-{
-    void __attribute__((naked)) ARM11(void)
-    {
-        //Disable interrupts
-        __asm(".word 0xF10C01C0");
-
-        //Clear ARM11 entry offset
-        *arm11Entry = 0;
-
-        //Shutdown LCDs
-        *(vu32 *)0x10202A44 = 0;
-        *(vu32 *)0x10202244 = 0;
-        *(vu32 *)0x10202014 = 0;
-
-        //Wait for the entry to be set
-        while(!*arm11Entry);
-
-        //Jump to it
-        ((void (*)())*arm11Entry)();
-    }
-
-    if(PDN_GPU_CNT != 1)
-    {
-        *arm11Entry = (u32)ARM11;
-        while(*arm11Entry);
-    }
-}
-
-u32 initScreens(void)
-{
-    u32 needToInit = PDN_GPU_CNT == 1;
-
-    if(needToInit)
-    {
-        u32 *const screenInitAddress = (u32 *)0x24FFFC00;
-
-        memcpy(screenInitAddress, screeninit, screeninit_size);
-
-        //Write brightness level for the stub to pick up
-        screenInitAddress[2] = MULTICONFIG(0);
-
-        *arm11Entry = (u32)screenInitAddress;
-        while(*arm11Entry);
-
-        //Turn on backlight
-        i2cWriteRegister(I2C_DEV_MCU, 0x22, 0x2A);
-    }
-
-    clearScreens();
-
-    return needToInit;
-}

source/screeninit.h

@@ -1,15 +0,0 @@
-/*
-*   screeninit.h
-*
-*   Screen init code by dark_samus, bil1s, Normmatt, delebile and others.
-*   Screen deinit code by tiniVi.
-*/
-
-#pragma once
-
-#include "types.h"
-
-#define PDN_GPU_CNT (*(vu8 *)0x10141200)
-
-void deinitScreens(void);
-u32 initScreens(void);

source/start.s

@@ -1,29 +1,70 @@
+@   This file is part of Luma3DS
+@   Copyright (C) 2016 Aurora Wright, TuxSH
+@
+@   This program is free software: you can redistribute it and/or modify
+@   it under the terms of the GNU General Public License as published by
+@   the Free Software Foundation, either version 3 of the License, or
+@   (at your option) any later version.
+@
+@   This program is distributed in the hope that it will be useful,
+@   but WITHOUT ANY WARRANTY; without even the implied warranty of
+@   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+@   GNU General Public License for more details.
+@
+@   You should have received a copy of the GNU General Public License
+@   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+@
+@   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+@   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+@   Notices displayed by works containing it.
+
+@   Thanks to the numerous people who took part in writing this file
+
 .section .text.start
 .align 4
 .global _start
 _start:
     b start
 
-    .word 0, 0
+.global launchedFirmTIDLow
+launchedFirmTIDLow:
+    .hword 0, 0, 0, 0, 0, 0, 0, 0 
 
 start:
     @ Change the stack pointer
     mov sp, #0x27000000
 
+    @ Disable interrupts
+    mrs r0, cpsr
+    orr r0, #0x1C0
+    msr cpsr_cx, r0
+
+    @ Disable caches / MPU
+    mrc p15, 0, r0, c1, c0, 0  @ read control register
+    bic r0, #(1<<12)           @ - instruction cache disable
+    bic r0, #(1<<2)            @ - data cache disable
+    bic r0, #(1<<0)            @ - mpu disable
+    mcr p15, 0, r0, c1, c0, 0  @ write control register
+
+    @ Flush caches
+    bl flushEntireDCache
+    bl flushEntireICache
+
     @ Give read/write access to all the memory regions
-    ldr r0, =0x33333333
+    ldr r0, =0x3333333
     mcr p15, 0, r0, c5, c0, 2 @ write data access
     mcr p15, 0, r0, c5, c0, 3 @ write instruction access
 
     @ Set MPU permissions and cache settings
-    ldr r0, =0xFFFF001D	@ ffff0000 32k
+    ldr r0, =0xFFFF001D @ ffff0000 32k  | bootrom (unprotected part)
-    ldr r1, =0x01FF801D	@ 01ff8000 32k
+    ldr r1, =0x01FF801D @ 01ff8000 32k  | itcm
-    ldr r2, =0x08000027	@ 08000000 1M
+    ldr r2, =0x08000029 @ 08000000 2M   | arm9 mem (O3DS / N3DS) 
-    ldr r3, =0x10000021	@ 10000000 128k
+    ldr r3, =0x10000029 @ 10000000 2M   | io mem (ARM9 / first 2MB)
-    ldr r4, =0x10100025	@ 10100000 512k
+    ldr r4, =0x20000037 @ 20000000 256M | fcram (O3DS / N3DS)
-    ldr r5, =0x20000035	@ 20000000 128M
+    ldr r5, =0x1FF00027 @ 1FF00000 1M   | dsp / axi wram
-    ldr r6, =0x1FF00027	@ 1FF00000 1M
+    ldr r6, =0x1800002D @ 18000000 8M   | vram (+ 2MB)
-    ldr r7, =0x1800002D	@ 18000000 8M
+    mov r7, #0
+    mov r8, #0x15
     mcr p15, 0, r0, c6, c0, 0
     mcr p15, 0, r1, c6, c1, 0
     mcr p15, 0, r2, c6, c2, 0
@@ -32,24 +73,18 @@ start:
     mcr p15, 0, r5, c6, c5, 0
     mcr p15, 0, r6, c6, c6, 0
     mcr p15, 0, r7, c6, c7, 0
-    mov r0, #0x25
+    mcr p15, 0, r8, c3, c0, 0   @ Write bufferable 0, 2, 4
-    mcr p15, 0, r0, c3, c0, 0	@ Write bufferable 0, 2, 5
+    mcr p15, 0, r8, c2, c0, 0   @ Data cacheable 0, 2, 4
-    mcr p15, 0, r0, c2, c0, 0	@ Data cacheable 0, 2, 5
+    mcr p15, 0, r8, c2, c0, 1   @ Inst cacheable 0, 2, 4
-    mcr p15, 0, r0, c2, c0, 1	@ Inst cacheable 0, 2, 5
 
-    @ Enable caches
+    @ Enable caches / MPU / ITCM
     mrc p15, 0, r0, c1, c0, 0  @ read control register
+    orr r0, r0, #(1<<18)       @ - ITCM enable
     orr r0, r0, #(1<<12)       @ - instruction cache enable
     orr r0, r0, #(1<<2)        @ - data cache enable
     orr r0, r0, #(1<<0)        @ - mpu enable
     mcr p15, 0, r0, c1, c0, 0  @ write control register
 
-    @ Flush caches
-    mov r0, #0
-    mcr p15, 0, r0, c7, c5, 0  @ flush I-cache
-    mcr p15, 0, r0, c7, c6, 0  @ flush D-cache
-    mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
-
     @ Fix mounting of SDMC
     ldr r0, =0x10000020
     mov r1, #0x340

source/types.h

@@ -1,11 +1,30 @@
 /*
-*   types.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <stdbool.h>
 
 //Common data types
 typedef uint8_t u8;
@@ -16,3 +35,19 @@ typedef volatile u8 vu8;
 typedef volatile u16 vu16;
 typedef volatile u32 vu32;
 typedef volatile u64 vu64;
+
+//Used by multiple files:
+typedef enum FirmwareSource
+{
+    FIRMWARE_SYSNAND = 0,
+    FIRMWARE_EMUNAND = 1,
+    FIRMWARE_EMUNAND2 = 2
+} FirmwareSource;
+
+typedef enum FirmwareType
+{
+    NATIVE_FIRM = 0,
+    TWL_FIRM = 1,
+    AGB_FIRM = 2,
+    SAFE_FIRM = 3
+} FirmwareType;

source/utils.c

@@ -1,10 +1,31 @@
 /*
-*   utils.c
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #include "utils.h"
 #include "i2c.h"
 #include "buttons.h"
+#include "screen.h"
+#include "draw.h"
+#include "cache.h"
 
 u32 waitInput(void)
 {
@@ -35,8 +56,22 @@ u32 waitInput(void)
 
 void mcuReboot(void)
 {
+    if(PDN_GPU_CNT != 1) clearScreens();
+
+    flushEntireDCache(); //Ensure that all memory transfers have completed and that the data cache has been flushed
+
     i2cWriteRegister(I2C_DEV_MCU, 0x20, 1 << 2);
-    while(1);
+    while(true);
+}
+
+void mcuPowerOff(void)
+{
+    if(PDN_GPU_CNT != 1) clearScreens();
+
+    flushEntireDCache(); //Ensure that all memory transfers have completed and that the data cache has been flushed
+    
+    i2cWriteRegister(I2C_DEV_MCU, 0x20, 1 << 0);
+    while(true);
 }
 
 //TODO: add support for TIMER IRQ
@@ -44,34 +79,46 @@ static inline void startChrono(u64 initialTicks)
 {
     //Based on a NATIVE_FIRM disassembly
 
-    *(vu16 *)0x10003002 = 0; //67MHz
+    REG_TIMER_CNT(0) = 0; //67MHz
-    for(u32 i = 1; i < 4; i++) *(vu16 *)(0x10003002 + 4 * i) = 4; //Count-up
+    for(u32 i = 1; i < 4; i++) REG_TIMER_CNT(i) = 4; //Count-up
 
-    for(u32 i = 0; i < 4; i++) *(vu16 *)(0x10003000 + 4 * i) = (u16)(initialTicks >> (16 * i));
+    for(u32 i = 0; i < 4; i++) REG_TIMER_VAL(i) = (u16)(initialTicks >> (16 * i));
 
-    *(vu16 *)0x10003002 = 0x80; //67MHz; enabled
+    REG_TIMER_CNT(0) = 0x80; //67MHz; enabled
-    for(u32 i = 1; i < 4; i++) *(vu16 *)(0x10003002 + 4 * i) = 0x84; //Count-up; enabled
+    for(u32 i = 1; i < 4; i++) REG_TIMER_CNT(i) = 0x84; //Count-up; enabled
+}
+
+static inline void stopChrono(void)
+{
+    for(u32 i = 0; i < 4; i++) REG_TIMER_CNT(i) &= ~0x80;
 }
 
 void chrono(u32 seconds)
 {
-    static u64 startingTicks = 0;
+    startChrono(0);
 
-    if(!startingTicks) startChrono(0);
+    u64 startingTicks = 0;
+    for(u32 i = 0; i < 4; i++) startingTicks |= REG_TIMER_VAL(i) << (16 * i);
 
     u64 res;
-
     do
     {
         res = 0;
-        for(u32 i = 0; i < 4; i++) res |= *(vu16 *)(0x10003000 + 4 * i) << (16 * i);
+        for(u32 i = 0; i < 4; i++) res |= REG_TIMER_VAL(i) << (16 * i);
     }
     while(res - startingTicks < seconds * TICKS_PER_SEC);
 
-    if(!seconds) startingTicks = res;
+    stopChrono();
 }
 
-void stopChrono(void)
+void error(const char *message)
 {
-    for(u32 i = 1; i < 4; i++) *(vu16 *)(0x10003002 + 4 * i) &= ~0x80;
+    initScreens();
+
+    drawString("An error has occurred:", 10, 10, COLOR_RED);
+    int posY = drawString(message, 10, 30, COLOR_WHITE);
+    drawString("Press any button to shutdown", 10, posY + 2 * SPACING_Y, COLOR_WHITE);
+
+    waitInput();
+    mcuPowerOff();
 }

source/utils.h

@@ -1,15 +1,35 @@
 /*
-*   utils.h
+*   This file is part of Luma3DS
+*   Copyright (C) 2016 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
+*   reasonable legal notices or author attributions in that material or in the Appropriate Legal
+*   Notices displayed by works containing it.
 */
 
 #pragma once
 
 #include "types.h"
 
+#define TICKS_PER_SEC       67027964ULL
+#define REG_TIMER_CNT(i)    *(vu16 *)(0x10003002 + 4 * i)
+#define REG_TIMER_VAL(i)    *(vu16 *)(0x10003000 + 4 * i)
+
 u32 waitInput(void);
 void mcuReboot(void);
-
+void mcuPowerOff(void);
-#define TICKS_PER_SEC   67027964ULL
-
 void chrono(u32 seconds);
-void stopChrono(void);
+void error(const char *message);