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https://github.com/d0k3/GodMode9.git
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Merge pull request #6 from d0k3/test2
Fix virtual memory drive accesses
This commit is contained in:
d0k3
commit
34fbebebef
@ -7,20 +7,27 @@ _start:
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@ Change the stack pointer
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mov sp, #0x27000000
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@ Disable caches / mpu
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mrc p15, 0, r4, c1, c0, 0 @ read control register
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bic r4, #(1<<12) @ - instruction cache disable
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bic r4, #(1<<2) @ - data cache disable
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bic r4, #(1<<0) @ - mpu disable
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mcr p15, 0, r4, c1, c0, 0 @ write control register
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@ Give read/write access to all the memory regions
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ldr r5, =0x33333333
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mcr p15, 0, r5, c5, c0, 2 @ write data access
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mcr p15, 0, r5, c5, c0, 3 @ write instruction access
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@ Sets MPU permissions and cache settings
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ldr r0, =0xFFFF001D @ ffff0000 32k
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ldr r1, =0x01FF801D @ 01ff8000 32k
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ldr r2, =0x08000027 @ 08000000 1M
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ldr r3, =0x10000021 @ 10000000 128k
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ldr r4, =0x10100025 @ 10100000 512k
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ldr r5, =0x20000035 @ 20000000 128M
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ldr r6, =0x1FF00027 @ 1FF00000 1M
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ldr r7, =0x1800002D @ 18000000 8M
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ldr r0, =0xFFFF001D @ ffff0000 32k | bootrom (unprotected part)
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ldr r1, =0x3000801B @ fff00000 16k | dtcm
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ldr r2, =0x01FF801D @ 01ff8000 32k | itcm
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ldr r3, =0x08000029 @ 08000000 1M | arm9 mem (O3DS / N3DS)
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ldr r4, =0x10000029 @ 10000000 2M | io mem (ARM9 / first 2MB)
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ldr r5, =0x20000037 @ 20000000 256M | fcram (O3DS / N3DS)
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ldr r6, =0x1FF00027 @ 1FF00000 1M | dsp / axi wram
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ldr r7, =0x1800002D @ 18000000 8M | vram (+ 2MB)
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mov r10, #0x25
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mov r11, #0x25
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mov r12, #0x25
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@ -36,9 +43,14 @@ _start:
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mcr p15, 0, r11, c2, c0, 0 @ Data cacheable 0, 2, 5
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mcr p15, 0, r12, c2, c0, 1 @ Inst cacheable 0, 2, 5
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@ Enable dctm
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ldr r1, =0x3000800A @ set dtcm
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mcr p15, 0, r1, c9, c1, 0 @ set the dtcm Region Register
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@ Enable caches
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mrc p15, 0, r4, c1, c0, 0 @ read control register
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orr r4, r4, #(1<<18) @ - itcm enable
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orr r4, r4, #(1<<16) @ - dtcm enable
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orr r4, r4, #(1<<12) @ - instruction cache enable
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orr r4, r4, #(1<<2) @ - data cache enable
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orr r4, r4, #(1<<0) @ - mpu enable
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@ -37,13 +37,65 @@ _start:
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cmp r1, #0
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bgt waitLoop92
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@ Disable caches / mpu
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mrc p15, 0, r4, c1, c0, 0 @ read control register
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bic r4, #(1<<12) @ - instruction cache disable
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bic r4, #(1<<2) @ - data cache disable
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bic r4, #(1<<0) @ - mpu disable
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mcr p15, 0, r4, c1, c0, 0 @ write control register
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@ Give read/write access to all the memory regions
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ldr r5, =0x33333333
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mcr p15, 0, r5, c5, c0, 2 @ write data access
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mcr p15, 0, r5, c5, c0, 3 @ write instruction access
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@ Sets MPU permissions and cache settings
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ldr r0, =0xFFFF001D @ ffff0000 32k | bootrom (unprotected part)
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ldr r1, =0x3000801B @ fff00000 16k | dtcm
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ldr r2, =0x01FF801D @ 01ff8000 32k | itcm
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ldr r3, =0x08000029 @ 08000000 1M | arm9 mem (O3DS / N3DS)
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ldr r4, =0x10000029 @ 10000000 2M | io mem (ARM9 / first 2MB)
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ldr r5, =0x20000037 @ 20000000 256M | fcram (O3DS / N3DS)
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ldr r6, =0x1FF00027 @ 1FF00000 1M | dsp / axi wram
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ldr r7, =0x1800002D @ 18000000 8M | vram (+ 2MB)
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mov r10, #0x25
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mov r11, #0x25
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mov r12, #0x25
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mcr p15, 0, r0, c6, c0, 0
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mcr p15, 0, r1, c6, c1, 0
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mcr p15, 0, r2, c6, c2, 0
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mcr p15, 0, r3, c6, c3, 0
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mcr p15, 0, r4, c6, c4, 0
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mcr p15, 0, r5, c6, c5, 0
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mcr p15, 0, r6, c6, c6, 0
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mcr p15, 0, r7, c6, c7, 0
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mcr p15, 0, r10, c3, c0, 0 @ Write bufferable 0, 2, 5
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mcr p15, 0, r11, c2, c0, 0 @ Data cacheable 0, 2, 5
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mcr p15, 0, r12, c2, c0, 1 @ Inst cacheable 0, 2, 5
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@ Enable dctm
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ldr r1, =0x3000800A @ set dtcm
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mcr p15, 0, r1, c9, c1, 0 @ set the dtcm Region Register
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@ Enable caches
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mrc p15, 0, r4, c1, c0, 0 @ read control register
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orr r4, r4, #(1<<18) @ - itcm enable
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orr r4, r4, #(1<<16) @ - dtcm enable
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orr r4, r4, #(1<<12) @ - instruction cache enable
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orr r4, r4, #(1<<2) @ - data cache enable
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orr r4, r4, #(1<<0) @ - mpu enable
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mcr p15, 0, r4, c1, c0, 0 @ write control register
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@ Flush caches
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mov r5, #0
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mcr p15, 0, r5, c7, c5, 0 @ flush I-cache
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mcr p15, 0, r5, c7, c6, 0 @ flush D-cache
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mcr p15, 0, r5, c7, c10, 4 @ drain write buffer
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@ Fixes mounting of SDMC
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ldr r0, =0x10000020
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mov r1, #0x340
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str r1, [r0]
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ldr sp,=0x22160000
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ldr r3, =main
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@ -7,6 +7,7 @@
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#define VFLAG_ON_NO3DS NAND_TYPE_NO3DS
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#define VFLAG_ON_NAND (VFLAG_ON_O3DS | VFLAG_ON_N3DS | VFLAG_ON_NO3DS)
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#define VFLAG_ON_MEMORY VRT_MEMORY
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#define VFLAG_N3DS_ONLY (1<<30)
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#define VFLAG_NAND_SIZE (1<<31)
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// see: http://3dbrew.org/wiki/Flash_Filesystem#NAND_structure
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@ -29,12 +30,15 @@ VirtualFile virtualFileTemplates[] = {
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{ "sector0x96.bin" , 0x00012C00, 0x00000200, 0xFF, VFLAG_ON_NAND },
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{ "nand_hdr.bin" , 0x00000000, 0x00000200, 0xFF, VFLAG_ON_NAND },
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{ "itcm.mem" , 0x01FF8000, 0x00008000, 0xFF, VFLAG_ON_MEMORY },
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{ "arm9internal.mem" , 0x08000000, 0x00100000, 0xFF, VFLAG_ON_MEMORY },
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{ "arm9.mem" , 0x08000000, 0x00100000, 0xFF, VFLAG_ON_MEMORY },
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{ "arm9ext.mem" , 0x08010000, 0x00100000, 0xFF, VFLAG_ON_MEMORY | VFLAG_N3DS_ONLY },
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{ "vram.mem" , 0x18000000, 0x00600000, 0xFF, VFLAG_ON_MEMORY },
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{ "dsp.mem" , 0x1FF00000, 0x00080000, 0xFF, VFLAG_ON_MEMORY },
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{ "axiwram.mem" , 0x1FF80000, 0x00080000, 0xFF, VFLAG_ON_MEMORY },
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{ "fcram.mem" , 0x20000000, 0x08000000, 0xFF, VFLAG_ON_MEMORY },
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{ "dtcm.mem" , 0xFFF00000, 0x00004000, 0xFF, VFLAG_ON_MEMORY },
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{ "fcramext.mem" , 0x28000000, 0x08000000, 0xFF, VFLAG_ON_MEMORY | VFLAG_N3DS_ONLY },
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{ "dtcm.mem" , 0x30008000, 0x00004000, 0xFF, VFLAG_ON_MEMORY },
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// { "bootrom.mem" , 0xFFFF0000, 0x00010000, 0xFF, VFLAG_ON_MEMORY },
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{ "bootrom_unp.mem" , 0xFFFF0000, 0x00008000, 0xFF, VFLAG_ON_MEMORY }
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};
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@ -95,6 +99,8 @@ bool FindVirtualFile(VirtualFile* vfile, const char* path, u32 size)
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// process special flags
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if ((vfile->keyslot == 0x05) && !CheckSlot0x05Crypto())
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return false; // keyslot 0x05 not properly set up
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if ((vfile->flags & VFLAG_N3DS_ONLY) && (GetUnitPlatform() != PLATFORM_N3DS))
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return false; // this is not on O3DS consoles
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if (vfile->flags & VFLAG_NAND_SIZE) {
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if ((virtual_src != NAND_SYSNAND) && (GetNandSizeSectors(NAND_SYSNAND) != GetNandSizeSectors(virtual_src)))
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return false; // EmuNAND/IMGNAND is too small
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@ -8,11 +8,13 @@
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#define VRT_IMGNAND NAND_IMGNAND
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#define VRT_MEMORY (1<<10)
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#define VFLAG_EXT_A9LH_AREA (1<<20)
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static const char* virtualFileList[] = { // must have a match in virtualFileTemplates[]
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"twln.bin", "twlp.bin", "agbsave.bin", "firm0.bin", "firm1.bin", "ctrnand_fat.bin",
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"ctrnand_full.bin", "nand.bin", "nand_minsize.bin", "nand_hdr.bin", "sector0x96.bin",
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"itcm.mem", "arm9internal.mem", "vram.mem", "dsp.mem", "axiwram.mem", "fcram.mem",
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"dtcm.mem", "bootrom_unp.mem"
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"itcm.mem", "arm9.mem", "arm9ext.mem", "vram.mem", "dsp.mem", "axiwram.mem",
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"fcram.mem", "fcramext.mem", "dtcm.mem", "bootrom_unp.mem"
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};
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static const u32 virtualFileList_size = sizeof(virtualFileList) / sizeof(char*);
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