5f32779ceb
- To override the last used boot mode on soft reboot, you only need to press A if you want to boot to the default option. Holding L(+payload button)/R is enough for the other modes. - Added version number to the config menu - Replaced the memsearch algorithm with a faster one - Integrated 3ds_injector from @yifanlu. This brings us region free and all the other FreeMultiPatcher patches. Other than that, you now have the possibility to display the currently booted NAND/FIRM in System Settings! - Rewritten most code for the config menu. You now can navigate to the first/last options with left and right. - You can now choose the 9.0 FIRM to be default in the config menu. This will essentially switch "no buttons" and L in both modes. - You can now choose the second emuNAND to be default in the config menu. This will essentially switch "B is not pressed" and "B is pressed". - When the second emuNAND is booted, it will persist like the other boot options on soft reboot - Bugfixes
305 lines
10 KiB
C
Executable File
305 lines
10 KiB
C
Executable File
/*
|
|
* firm.c
|
|
* by Reisyukaku / Aurora Wright
|
|
* Copyright (c) 2016 All Rights Reserved
|
|
*/
|
|
|
|
#include "firm.h"
|
|
#include "patches.h"
|
|
#include "memory.h"
|
|
#include "fs.h"
|
|
#include "emunand.h"
|
|
#include "crypto.h"
|
|
#include "draw.h"
|
|
#include "screeninit.h"
|
|
#include "loader.h"
|
|
#include "utils.h"
|
|
#include "buttons.h"
|
|
#include "../build/patches.h"
|
|
|
|
//FIRM patches version
|
|
#define PATCH_VER 2
|
|
|
|
static firmHeader *const firm = (firmHeader *)0x24000000;
|
|
static const firmSectionHeader *section;
|
|
static u8 *arm9Section;
|
|
static const char *patchedFirms[] = { "/aurei/patched_firmware_sys.bin",
|
|
"/aurei/patched_firmware_emu.bin",
|
|
"/aurei/patched_firmware_em2.bin",
|
|
"/aurei/patched_firmware90.bin" };
|
|
static u32 firmSize,
|
|
console,
|
|
mode,
|
|
emuNAND,
|
|
a9lhSetup,
|
|
selectedFirm,
|
|
usePatchedFirm;
|
|
|
|
void setupCFW(void){
|
|
|
|
//Determine if booting with A9LH
|
|
u32 a9lhBoot = (PDN_SPI_CNT == 0x0) ? 1 : 0;
|
|
//Retrieve the last booted FIRM
|
|
u8 previousFirm = CFG_BOOTENV;
|
|
//Detect the console being used
|
|
console = (PDN_MPCORE_CFG == 1) ? 0 : 1;
|
|
//Get pressed buttons
|
|
u16 pressed = HID_PAD;
|
|
|
|
//Attempt to read the configuration file
|
|
const char configPath[] = "aurei/config.bin";
|
|
u32 config = 0;
|
|
u32 needConfig = fileRead(&config, configPath, 3) ? 1 : 2;
|
|
|
|
//Determine if A9LH is installed and the user has an updated sysNAND
|
|
u32 updatedSys;
|
|
|
|
if(a9lhBoot || (config >> 2) & 0x1){
|
|
if(pressed == SAFE_MODE)
|
|
error("Using Safe Mode would brick you, or remove A9LH!");
|
|
|
|
a9lhSetup = 1;
|
|
//Check setting for > 9.2 sysNAND
|
|
updatedSys = config & 0x1;
|
|
} else{
|
|
a9lhSetup = 0;
|
|
updatedSys = 0;
|
|
}
|
|
|
|
/* If booting with A9LH, it's a MCU reboot and a previous configuration exists,
|
|
try to force boot options */
|
|
if(a9lhBoot && previousFirm && needConfig == 1){
|
|
//Always force a sysNAND boot when quitting AGB_FIRM
|
|
if(previousFirm == 0x7){
|
|
if(!updatedSys) mode = (config >> 12) & 0x1;
|
|
emuNAND = 0;
|
|
needConfig = 0;
|
|
//Else, force the last used boot options unless A, L or R are pressed
|
|
} else if(!(pressed & OPTION_BUTTONS)){
|
|
mode = (config >> 12) & 0x1;
|
|
emuNAND = (config >> 13) & 0x3;
|
|
needConfig = 0;
|
|
}
|
|
}
|
|
|
|
if(needConfig){
|
|
|
|
/* If L and one of the payload buttons are pressed, and if not using A9LH
|
|
the Safe Mode combo is not pressed, chainload an external payload */
|
|
if((pressed & BUTTON_L1) && (pressed & PAYLOAD_BUTTONS) &&
|
|
pressed != SAFE_MODE) loadPayload();
|
|
|
|
//If no configuration file exists or SELECT is held, load configuration menu
|
|
if(needConfig == 2 || (pressed & BUTTON_SELECT))
|
|
configureCFW(configPath, patchedFirms[3]);
|
|
|
|
//If screens are inited, load splash screen
|
|
if(PDN_GPU_CNT != 0x1) loadSplash();
|
|
|
|
/* If L is pressed, boot 9.0 FIRM */
|
|
mode = ((config >> 3) & 0x1) ? ((!(pressed & BUTTON_L1R1)) ? 0 : 1) :
|
|
((pressed & BUTTON_L1) ? 0 : 1);
|
|
|
|
/* If L or R aren't pressed on a 9.0/9.2 sysNAND, or the 9.0 FIRM is selected
|
|
or R is pressed on a > 9.2 sysNAND, boot emuNAND */
|
|
if((updatedSys && (!mode || (pressed & BUTTON_R1))) ||
|
|
(!updatedSys && mode && !(pressed & BUTTON_R1))){
|
|
//If not 9.0 FIRM and B is pressed, attempt booting the second emuNAND
|
|
emuNAND = (mode && ((!(pressed & BUTTON_B)) == ((config >> 4) & 0x1))) ? 2 : 1;
|
|
} else emuNAND = 0;
|
|
|
|
u32 tempConfig = (PATCH_VER << 17) | (a9lhSetup << 16) | (emuNAND << 13) | (mode << 12);
|
|
|
|
/* If tha FIRM patches version is different or user switched to/from A9LH,
|
|
delete all patched FIRMs */
|
|
if((tempConfig & 0xFF0000) != (config & 0xFF0000))
|
|
deleteFirms(patchedFirms, sizeof(patchedFirms) / sizeof(char *));
|
|
|
|
//If the boot configuration is different from previously, overwrite it
|
|
if((tempConfig & 0xFFF000) != (config & 0xFFF000)){
|
|
//Preserve user settings (first 12 bits)
|
|
tempConfig |= config & 0xFFF;
|
|
fileWrite(&tempConfig, configPath, 3);
|
|
}
|
|
}
|
|
|
|
/* Determine which patched FIRM we need to write or attempt to use (if any).
|
|
Patched 9.0 FIRM is only needed if "Use pre-patched FIRMs" is set */
|
|
selectedFirm = mode ? (emuNAND ? (emuNAND == 1 ? 2 : 3) : 1) :
|
|
(((config >> 1) & 0x1) ? 4 : 0);
|
|
|
|
//If "Use pre-patched FIRMs" is set and the appropriate FIRM exists, use it
|
|
usePatchedFirm = (((config >> 1) & 0x1) && fileExists(patchedFirms[selectedFirm - 1])) ? 1 : 0;
|
|
}
|
|
|
|
//Load FIRM into FCRAM
|
|
void loadFirm(void){
|
|
|
|
//If not using an A9LH setup or the patched FIRM, load 9.0 FIRM from NAND
|
|
if(!usePatchedFirm && !a9lhSetup && !mode){
|
|
//Read FIRM from NAND and write to FCRAM
|
|
firmSize = console ? 0xF2000 : 0xE9000;
|
|
nandFirm0((u8 *)firm, firmSize, console);
|
|
//Check for correct decryption
|
|
if(memcmp(firm, "FIRM", 4) != 0)
|
|
error("Couldn't decrypt NAND FIRM0 (O3DS not on 9.x?)");
|
|
}
|
|
//Load FIRM from SD
|
|
else{
|
|
const char *path = usePatchedFirm ? patchedFirms[selectedFirm - 1] :
|
|
(mode ? "/aurei/firmware.bin" : "/aurei/firmware90.bin");
|
|
firmSize = fileSize(path);
|
|
if(!firmSize) error("aurei/firmware(90).bin doesn't exist");
|
|
fileRead(firm, path, firmSize);
|
|
}
|
|
|
|
section = firm->section;
|
|
|
|
//Check that the loaded FIRM matches the console
|
|
if((((u32)section[2].address >> 8) & 0xFF) != (console ? 0x60 : 0x68))
|
|
error("aurei/firmware(90).bin doesn't match this\nconsole, or it's encrypted");
|
|
|
|
arm9Section = (u8 *)firm + section[2].offset;
|
|
|
|
if(console && !usePatchedFirm) decryptArm9Bin(arm9Section, mode);
|
|
}
|
|
|
|
//NAND redirection
|
|
static void loadEmu(u8 *proc9Offset){
|
|
|
|
u32 emuOffset,
|
|
emuHeader = 0,
|
|
emuRead,
|
|
emuWrite;
|
|
|
|
//Look for emuNAND
|
|
getEmunandSect(&emuOffset, &emuHeader, emuNAND);
|
|
|
|
//No emuNAND detected
|
|
if(!emuHeader) error("No emuNAND has been detected");
|
|
|
|
//Copy emuNAND code
|
|
void *emuCodeOffset = getEmuCode(proc9Offset);
|
|
memcpy(emuCodeOffset, emunand, emunand_size);
|
|
|
|
//Add the data of the found emuNAND
|
|
u32 *pos_offset = (u32 *)memsearch(emuCodeOffset, "NAND", emunand_size, 4);
|
|
u32 *pos_header = (u32 *)memsearch(emuCodeOffset, "NCSD", emunand_size, 4);
|
|
*pos_offset = emuOffset;
|
|
*pos_header = emuHeader;
|
|
|
|
//Find and add the SDMMC struct
|
|
u32 *pos_sdmmc = (u32 *)memsearch(emuCodeOffset, "SDMC", emunand_size, 4);
|
|
*pos_sdmmc = getSDMMC(arm9Section, section[2].size);
|
|
|
|
//Calculate offset for the hooks
|
|
u32 branchOffset = (u32)emuCodeOffset - (u32)firm -
|
|
section[2].offset + (u32)section[2].address;
|
|
|
|
//Add emunand hooks
|
|
getEmuRW(arm9Section, section[2].size, &emuRead, &emuWrite);
|
|
*(u16 *)emuRead = nandRedir[0];
|
|
*((u16 *)emuRead + 1) = nandRedir[1];
|
|
*((u32 *)emuRead + 1) = branchOffset;
|
|
*(u16 *)emuWrite = nandRedir[0];
|
|
*((u16 *)emuWrite + 1) = nandRedir[1];
|
|
*((u32 *)emuWrite + 1) = branchOffset;
|
|
|
|
//Set MPU for emu code region
|
|
u32 *mpuOffset = getMPU(arm9Section, section[2].size);
|
|
*mpuOffset = mpuPatch[0];
|
|
*(mpuOffset + 6) = mpuPatch[1];
|
|
*(mpuOffset + 9) = mpuPatch[2];
|
|
}
|
|
|
|
//Patches
|
|
void patchFirm(void){
|
|
|
|
//Skip patching
|
|
if(usePatchedFirm) return;
|
|
|
|
if(mode || emuNAND){
|
|
//Find the Process9 NCCH location
|
|
u8 *proc9Offset = getProc9(arm9Section, section[2].size);
|
|
|
|
//Apply emuNAND patches
|
|
if(emuNAND) loadEmu(proc9Offset);
|
|
|
|
//Patch FIRM reboots, not on 9.0 FIRM as it breaks firmlaunchhax
|
|
if(mode){
|
|
//Calculate offset for the firmlaunch code
|
|
void *rebootOffset = getReboot(arm9Section, section[2].size);
|
|
//Calculate offset for the fOpen function
|
|
u32 fOpenOffset = getfOpen(proc9Offset, rebootOffset);
|
|
|
|
//Copy firmlaunch code
|
|
memcpy(rebootOffset, reboot, reboot_size);
|
|
|
|
//Put the fOpen offset in the right location
|
|
u32 *pos_fopen = (u32 *)memsearch(rebootOffset, "OPEN", reboot_size, 4);
|
|
*pos_fopen = fOpenOffset;
|
|
|
|
//Patch path for emuNAND-patched FIRM
|
|
if(emuNAND){
|
|
void *pos_path = memsearch(rebootOffset, L"sy", reboot_size, 4);
|
|
memcpy(pos_path, emuNAND == 1 ? L"emu" : L"em2", 5);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(a9lhSetup && !emuNAND){
|
|
//Patch FIRM partitions writes on sysNAND to protect A9LH
|
|
u16 *writeOffset = getFirmWrite(arm9Section, section[2].size);
|
|
*writeOffset = writeBlock[0];
|
|
*(writeOffset + 1) = writeBlock[1];
|
|
}
|
|
|
|
//Disable signature checks
|
|
u32 sigOffset,
|
|
sigOffset2;
|
|
|
|
getSigChecks(arm9Section, section[2].size, &sigOffset, &sigOffset2);
|
|
*(u16 *)sigOffset = sigPatch[0];
|
|
*(u16 *)sigOffset2 = sigPatch[0];
|
|
*((u16 *)sigOffset2 + 1) = sigPatch[1];
|
|
|
|
//Replace the FIRM loader with the injector
|
|
u32 loaderOffset,
|
|
loaderSize;
|
|
|
|
getLoader((u8 *)firm + section[0].offset, section[0].size, &loaderOffset, &loaderSize);
|
|
if(injector_size <= (int)loaderSize){
|
|
memset((void *)loaderOffset, 0, loaderSize);
|
|
memcpy((void *)loaderOffset, injector, injector_size);
|
|
*((u32 *)loaderOffset + 0x41) = loaderSize / 0x200;
|
|
*((u32 *)loaderOffset + 0x69) = loaderSize / 0x200 - 5;
|
|
}
|
|
|
|
//Patch ARM9 entrypoint on N3DS to skip arm9loader
|
|
if(console)
|
|
firm->arm9Entry = (u8 *)0x801B01C;
|
|
|
|
//Write patched FIRM to SD if needed
|
|
if(selectedFirm)
|
|
if(!fileWrite(firm, patchedFirms[selectedFirm - 1], firmSize))
|
|
error("Couldn't write the patched FIRM (no free space?)");
|
|
}
|
|
|
|
void launchFirm(void){
|
|
|
|
if(console && mode) setKeyXs(arm9Section);
|
|
|
|
//Copy firm partitions to respective memory locations
|
|
memcpy(section[0].address, (u8 *)firm + section[0].offset, section[0].size);
|
|
memcpy(section[1].address, (u8 *)firm + section[1].offset, section[1].size);
|
|
memcpy(section[2].address, arm9Section, section[2].size);
|
|
|
|
//Fixes N3DS 3D
|
|
deinitScreens();
|
|
|
|
//Set ARM11 kernel entrypoint
|
|
*(vu32 *)0x1FFFFFF8 = (u32)firm->arm11Entry;
|
|
|
|
//Final jump to arm9 kernel
|
|
((void (*)())firm->arm9Entry)();
|
|
} |