Rewrite k11ext mmu mapping func + linker script
This commit is contained in:
TuxSH
parent
e64f267e4c
commit
35ad240018
@ -107,7 +107,6 @@ u32 installK11Extension(u8 *pos, u32 size, bool needToInitSd, u32 baseK11VA, u32
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//Please keep that in sync with the definition in k11_extension/source/main.c
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struct KExtParameters
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{
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u32 __attribute__((aligned(0x400))) L2MMUTableFor0x40000000[256];
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u32 basePA;
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void *originalHandlers[4];
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u32 L1MMUTableAddrs[4];
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@ -136,7 +135,7 @@ u32 installK11Extension(u8 *pos, u32 size, bool needToInitSd, u32 baseK11VA, u32
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//Our kernel11 extension is initially loaded in VRAM
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u32 kextTotalSize = *(u32 *)0x18000020 - 0x40000000;
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u32 dstKextPA = (ISN3DS ? 0x2E000000 : 0x26C00000) - kextTotalSize;
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u32 dstKextPA = (ISN3DS ? 0x2E000000 : 0x26C00000) - (0x1000 + kextTotalSize);
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u32 *hookVeneers = (u32 *)*freeK11Space;
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u32 relocBase = 0xFFFF0000 + (*freeK11Space - (u8 *)arm11ExceptionsPage);
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@ -177,7 +176,7 @@ u32 installK11Extension(u8 *pos, u32 size, bool needToInitSd, u32 baseK11VA, u32
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*off = MAKE_BRANCH_LINK(baseK11VA + ((u8 *)off - pos), relocBase + 24);
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struct KExtParameters *p = (struct KExtParameters *)(*(u32 *)0x18000024 - 0x40000000 + 0x18000000);
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p->basePA = dstKextPA;
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p->basePA = dstKextPA + 0x1000;
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for(u32 i = 0; i < 4; i++)
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{
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@ -105,7 +105,7 @@ $(BUILD):
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(TARGET).bin $(TARGET).elf
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@rm -fr $(BUILD) $(TARGET).elf
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#---------------------------------------------------------------------------------
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@ -117,11 +117,7 @@ DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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all : $(OUTPUT).bin
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$(OUTPUT).bin : $(OUTPUT).elf
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$(OBJCOPY) -S -O binary $< $@
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@echo built ... $(notdir $@)
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all : $(OUTPUT).elf
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$(OUTPUT).elf : $(OFILES)
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@ -2,26 +2,26 @@ OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
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OUTPUT_ARCH(arm)
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ENTRY(_start)
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/* Mostly copied from https://github.com/devkitPro/buildscripts/blob/master/dkarm-eabi/crtls/3dsx.ld */
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MEMORY
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{
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vram : ORIGIN = 0x18000000, LENGTH = 0x18180000 - 0x18000000 /* Up to the kernel builtins. */
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main : ORIGIN = 0x40000000, LENGTH = 1M
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}
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PHDRS
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{
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main PT_LOAD;
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}
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SECTIONS
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{
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PROVIDE(__start__ = 0x40000000);
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. = __start__;
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. = ALIGN(32);
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.crt0 :
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{
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. = ALIGN(32);
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KEEP( *(.text.start) )
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KEEP( *(.init) )
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. = ALIGN(4);
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}
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. = ABSOLUTE(__start__);
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.text :
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{
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. = ALIGN(4);
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KEEP( *(.text.start) )
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KEEP( *(.init) )
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/* .text */
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*(.text)
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@ -31,12 +31,11 @@ SECTIONS
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*(.stub)
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*(.gnu.warning)
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*(.gnu.linkonce.t*)
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. = ALIGN(4);
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/* .fini */
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KEEP( *(.fini) )
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. = ALIGN(4);
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}
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. = ALIGN(32);
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} >main AT>vram :main
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.rodata :
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{
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@ -46,64 +45,63 @@ SECTIONS
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*all.rodata*(*)
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*(.gnu.linkonce.r*)
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SORT(CONSTRUCTORS)
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. = ALIGN(4);
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}
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. = ALIGN(8);
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} >main AT>vram
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.preinit_array ALIGN(4) :
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.preinit_array :
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{
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PROVIDE (__preinit_array_start = .);
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KEEP (*(.preinit_array))
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PROVIDE (__preinit_array_end = .);
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}
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} >main AT>vram
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.init_array ALIGN(4) :
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.init_array :
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{
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PROVIDE (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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PROVIDE (__init_array_end = .);
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}
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} >main AT>vram
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.fini_array ALIGN(4) :
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.fini_array :
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{
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PROVIDE (__fini_array_start = .);
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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PROVIDE (__fini_array_end = .);
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}
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} >main AT>vram
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.ctors ALIGN(4) :
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.ctors :
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{
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KEEP (*crtbegin.o(.ctors)) /* MUST be first -- GCC requires it */
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KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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}
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >main AT>vram
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.dtors ALIGN(4) :
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.dtors :
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{
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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}
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >main AT>vram
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.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) }
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__exidx_start = .;
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ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) }
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__exidx_end = .;
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.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) __exidx_start = ABSOLUTE(.);} >main AT>vram
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ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) __exidx_end = ABSOLUTE(.);} >main AT>vram
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.data :
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{
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*(.data)
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*(.data.*)
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KEEP (*(.large_patch*))
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*(.gnu.linkonce.d*)
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CONSTRUCTORS
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. = ALIGN(4);
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}
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. = ALIGN(32);
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} >main AT>vram
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.bss :
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.bss (NOLOAD) :
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{
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. = ALIGN(32);
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PROVIDE (__bss_start__ = ABSOLUTE(.));
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@ -114,8 +112,8 @@ SECTIONS
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*(COMMON)
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. = ALIGN(8);
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PROVIDE (__bss_end__ = ABSOLUTE(.));
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}
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PROVIDE (__end__ = ABSOLUTE(.));
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PROVIDE (__end__ = ABSOLUTE(.));
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} >main :NONE
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/* ==================
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==== Metadata ====
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@ -34,7 +34,6 @@
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struct KExtParameters
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{
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u32 ALIGN(0x400) L2MMUTableFor0x40000000[256];
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u32 basePA;
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void *originalHandlers[4];
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u32 L1MMUTableAddrs[4];
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@ -46,18 +45,20 @@ void relocateAndSetupMMU(u32 coreId, u32 *L1Table)
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{
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struct KExtParameters *p0 = (struct KExtParameters *)((u32)&kExtParameters - 0x40000000 + 0x18000000);
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struct KExtParameters *p = (struct KExtParameters *)((u32)&kExtParameters - 0x40000000 + p0->basePA);
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u32 *L2Table = (u32 *)(p0->basePA - 0x1000);
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if(coreId == 0)
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{
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// Relocate ourselves, and clear BSS
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// This is only OK because the jumps will be relative...
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// This is only OK because the jumps will be relative & there's no mode switch...
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memcpy((void *)p0->basePA, (const void *)0x18000000, __bss_start__ - __start__);
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memset((u32 *)(p0->basePA + (__bss_start__ - __start__)), 0, __bss_end__ - __bss_start__);
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// Map the kernel ext to 0x40000000
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// 4KB extended small pages: [SYS:RW USR:-- X TYP:NORMAL SHARED OUTER NOCACHE, INNER CACHED WB WA]
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memset(L2Table, 0, 4 * 256);
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for(u32 offset = 0; offset < (u32)(__end__ - __start__); offset += 0x1000)
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p->L2MMUTableFor0x40000000[offset >> 12] = (p0->basePA + offset) | 0x516;
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L2Table[offset >> 12] = (p0->basePA + offset) | 0x516;
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__asm__ __volatile__ ("sev");
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}
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@ -74,7 +75,7 @@ void relocateAndSetupMMU(u32 coreId, u32 *L1Table)
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L1Table[i + (VA >> 20)] = PA | attribs;
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}
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L1Table[0x40000000 >> 20] = (u32)p->L2MMUTableFor0x40000000 | 1;
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L1Table[0x40000000 >> 20] = (u32)L2Table | 1;
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p->L1MMUTableAddrs[coreId] = (u32)L1Table;
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}
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@ -257,7 +258,7 @@ void main(FcramLayout *layout, KCoreContext *ctxs)
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u32 TTBCR_;
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s64 nb;
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layout->systemSize -= __end__ - __start__;
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layout->systemSize -= 0x1000 + __end__ - __start__;
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fcramLayout = *layout;
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coreCtxs = ctxs;
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@ -23,7 +23,7 @@
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@ reasonable ways as different from the original version.
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.section .text.start, "ax", %progbits
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.balign 32
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.balign 4
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.global _start
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_start:
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b start
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@ -100,7 +100,7 @@ void *svcHook(u8 *pageEnd)
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case 0x17:
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if(strcmp(codeSetOfProcess(currentProcess)->processName, "pm") == 0) // only called twice in pm, by the same function
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{
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*(vu32 *)(configPage + 0x44) += __end__ - __start__;
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*(vu32 *)(configPage + 0x44) += 0x1000 + __end__ - __start__;
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doingVeryShittyPmResLimitWorkaround = true;
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}
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return officialSVCs[0x17];
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@ -127,7 +127,7 @@ void *svcHook(u8 *pageEnd)
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case 0x79:
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if(doingVeryShittyPmResLimitWorkaround)
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{
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*(vu32 *)(configPage + 0x44) -= __end__ - __start__;
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*(vu32 *)(configPage + 0x44) -= 0x1000 + __end__ - __start__;
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doingVeryShittyPmResLimitWorkaround = false;
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}
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return officialSVCs[0x79];
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