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Merged linker scripts and bootstrapping code

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This commit is contained in:
Wolfvak 2017-02-23 14:33:09 +01:00 committed by d0k3
parent ad4e6b33cf
commit d0c4e11bad
12 changed files with 93 additions and 183 deletions
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21
Makefile
View File

@ -21,7 +21,7 @@ ifeq ($(MODE),safe)
export TARGET := SafeMode9
endif
BUILD := build
SOURCES := source source/common source/fs source/crypto source/fatfs source/nand source/virtual source/game source/gamecart source/abstraction
SOURCES := source source/common source/fs source/crypto source/fatfs source/nand source/virtual source/game source/gamecart
DATA := data
INCLUDES := source source/common source/font source/fs source/crypto source/fatfs source/nand source/virtual source/game source/gamecart
@ -30,7 +30,7 @@ INCLUDES := source source/common source/font source/fs source/crypto source/fatf
#---------------------------------------------------------------------------------
ARCH := -mthumb -mthumb-interwork -flto
CFLAGS := -g -Wall -Wextra -Wpedantic -Wcast-align -Wno-misleading-identation -O2\
CFLAGS := -g -Wall -Wextra -Wpedantic -Wcast-align -Wno-main -O2\
-march=armv5te -mtune=arm946e-s -fomit-frame-pointer -ffast-math -std=gnu99\
$(ARCH)
@ -57,13 +57,7 @@ endif
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
ASFLAGS := -g $(ARCH) -DEXEC_$(EXEC_METHOD)
LDFLAGS = -nostartfiles -g $(ARCH) -Wl,-Map,$(TARGET).map
ifeq ($(EXEC_METHOD),GATEWAY)
LDFLAGS += --specs=../gateway.specs
else ifeq ($(EXEC_METHOD),A9LH)
LDFLAGS += --specs=../a9lh.specs
endif
LDFLAGS = -T../link.ld -nostartfiles -g $(ARCH) -Wl,-Map,$(TARGET).map
LIBS :=
@ -120,7 +114,7 @@ export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
.PHONY: common clean all gateway a9lh cakehax cakerop brahma release
#---------------------------------------------------------------------------------
all: a9lh
all: binary
common:
@[ -d $(OUTPUT_D) ] || mkdir -p $(OUTPUT_D)
@ -129,14 +123,11 @@ common:
submodules:
@-git submodule update --init --recursive
gateway: common
@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile EXEC_METHOD=GATEWAY
binary: common
@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
@cp resources/LauncherTemplate.dat $(OUTPUT_D)/Launcher.dat
@dd if=$(OUTPUT).bin of=$(OUTPUT_D)/Launcher.dat bs=1497296 seek=1 conv=notrunc
a9lh: common
@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile EXEC_METHOD=A9LH
cakehax: submodules common
@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile EXEC_METHOD=GATEWAY
@make dir_out=$(OUTPUT_D) name=$(TARGET).dat -C CakeHax bigpayload

5
a9lh.specs
View File

@ -1,5 +0,0 @@
%rename link old_link
*link:
%(old_link) -T ../a9lh.ld%s

16
gateway.ld
View File

@ -1,16 +0,0 @@
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(_start)
SECTIONS
{
. = 0x08000000;
.text : ALIGN(4) { *(.text.start) *(.text*) }
.rodata : ALIGN(4) { *(.rodata*) }
.data : ALIGN(4) { *(.data*) }
.bss : ALIGN(4) { __bss_start = .; *(.bss* COMMON); __bss_end = .;}
. = ALIGN(4);
__end__ = ABSOLUTE(.);
}

5
gateway.specs
View File

@ -1,5 +0,0 @@
%rename link old_link
*link:
%(old_link) -T ../gateway.ld%s

4
a9lh.ld → link.ld
View File

@ -6,11 +6,13 @@ SECTIONS
{
. = 0x23F00000;
.text : ALIGN(4) { *(.text.start) *(.text*) }
.text.start : ALIGN(4) { *(.text.start) }
.text : ALIGN(4) { *(.text*) }
.rodata : ALIGN(4) { *(.rodata*) }
.data : ALIGN(4) { *(.data*) }
.bss : ALIGN(4) { __bss_start = .; *(.bss* COMMON); __bss_end = .;}
. = ALIGN(4);
__end__ = ABSOLUTE(.);
}

85
source/abstraction/a9-start.s
View File

@ -1,85 +0,0 @@
#ifdef EXEC_A9LH
.section .text.start
.align 4
.global _start
_start:
@ Change the stack pointer
mov sp, #0x27000000
@ Disable caches / mpu
mrc p15, 0, r4, c1, c0, 0 @ read control register
bic r4, #(1<<12) @ - instruction cache disable
bic r4, #(1<<2) @ - data cache disable
bic r4, #(1<<0) @ - mpu disable
mcr p15, 0, r4, c1, c0, 0 @ write control register
@ Clear bss
ldr r0, =__bss_start
ldr r1, =__bss_end
mov r2, #0
.bss_clr:
cmp r0, r1
beq .bss_clr_done
str r2, [r0], #4
b .bss_clr
.bss_clr_done:
@ Give read/write access to all the memory regions
ldr r5, =0x33333333
mcr p15, 0, r5, c5, c0, 2 @ write data access
mcr p15, 0, r5, c5, c0, 3 @ write instruction access
@ Sets MPU permissions and cache settings
ldr r0, =0xFFFF001F @ ffff0000 64k | bootrom (unprotected / protected)
ldr r1, =0x3000801B @ 30000000 16k | dtcm
ldr r2, =0x01FF801D @ 01ff8000 32k | itcm
ldr r3, =0x08000029 @ 08000000 2M | arm9 mem (O3DS / N3DS)
ldr r4, =0x10000029 @ 10000000 2M | io mem (ARM9 / first 2MB)
ldr r5, =0x20000037 @ 20000000 256M | fcram (O3DS / N3DS)
ldr r6, =0x1FF00027 @ 1FF00000 1M | dsp / axi wram
ldr r7, =0x1800002D @ 18000000 8M | vram (+ 2MB)
mov r8, #0x2D
mcr p15, 0, r0, c6, c0, 0
mcr p15, 0, r1, c6, c1, 0
mcr p15, 0, r2, c6, c2, 0
mcr p15, 0, r3, c6, c3, 0
mcr p15, 0, r4, c6, c4, 0
mcr p15, 0, r5, c6, c5, 0
mcr p15, 0, r6, c6, c6, 0
mcr p15, 0, r7, c6, c7, 0
mcr p15, 0, r8, c3, c0, 0 @ Write bufferable 0, 2, 5
mcr p15, 0, r8, c2, c0, 0 @ Data cacheable 0, 2, 5
mcr p15, 0, r8, c2, c0, 1 @ Inst cacheable 0, 2, 5
@ Enable dctm
ldr r1, =0x3000800A @ set dtcm
mcr p15, 0, r1, c9, c1, 0 @ set the dtcm Region Register
@ Enable caches
mrc p15, 0, r4, c1, c0, 0 @ read control register
orr r4, r4, #(1<<18) @ - itcm enable
orr r4, r4, #(1<<16) @ - dtcm enable
orr r4, r4, #(1<<12) @ - instruction cache enable
orr r4, r4, #(1<<2) @ - data cache enable
orr r4, r4, #(1<<0) @ - mpu enable
mcr p15, 0, r4, c1, c0, 0 @ write control register
@ Flush caches
mov r5, #0
mcr p15, 0, r5, c7, c5, 0 @ flush I-cache
mcr p15, 0, r5, c7, c6, 0 @ flush D-cache
mcr p15, 0, r5, c7, c10, 4 @ drain write buffer
@ Fixes mounting of SDMC
ldr r0, =0x10000020
mov r1, #0x340
str r1, [r0]
bl main
.die:
b .die
#endif // EXEC_A9LH

3
source/common/common.h
View File

@ -37,6 +37,9 @@
#define align(v,a) \
(((v) % (a)) ? ((v) + (a) - ((v) % (a))) : (v))
#define ENTRY_BRAHMA (1)
#define ENTRY_GATEWAY (2)
// GodMode9 version
#define VERSION "0.9.9.4"

13
source/common/ui.h
View File

@ -21,7 +21,7 @@
#define FONT_HEIGHT_EXT 8
#endif
#define RGB(r,g,b) (r<<24|b<<16|g<<8|r)
#define RGB(r,g,b) ((r)<<24|(b)<<16|(g)<<8|(r))
#define COLOR_BLACK RGB(0x00, 0x00, 0x00)
#define COLOR_WHITE RGB(0xFF, 0xFF, 0xFF)
@ -52,15 +52,8 @@
#define COLOR_STD_BG COLOR_BLACK
#define COLOR_STD_FONT COLOR_WHITE
#ifdef EXEC_GATEWAY
#define TOP_SCREEN (u8*)(*(u32*)((uint32_t)0x080FFFC0 + 4 * (*(u32*)0x080FFFD8 & 1)))
#define BOT_SCREEN (u8*)(*(u32*)((uint32_t)0x080FFFD0 + 4 * (*(u32*)0x080FFFDC & 1)))
#elif defined(EXEC_A9LH)
#define TOP_SCREEN (u8*)(*(u32*)0x23FFFE00)
#define BOT_SCREEN (u8*)(*(u32*)0x23FFFE08)
#else
#error "Unknown execution method"
#endif
#define TOP_SCREEN (u8*)(*(u32*)0x23FFFE00)
#define BOT_SCREEN (u8*)(*(u32*)0x23FFFE08)
void ClearScreen(unsigned char *screen, int color);
void ClearScreenF(bool clear_top, bool clear_bottom, int color);

2
source/fatfs/ff.c
View File

@ -4941,7 +4941,7 @@ FRESULT f_setlabel (
dj.obj.fs = fs;
/* Get length of given volume label */
for (slen = 0; (UINT)label[slen] >= ' '; slen++) ; /* Get name length */
for (slen = 0; (UINT)label[slen] >= ' '; slen++) {} /* Get name length */
#if _FS_EXFAT
if (fs->fs_type == FS_EXFAT) { /* On the exFAT volume */

2
source/godmode.c
View File

@ -102,7 +102,7 @@ void DrawUserInterface(const char* curr_path, DirEntry* curr_entry, DirStruct* c
(drvtype & DRV_CART) ? "Gamecart" : (drvtype & DRV_SEARCH) ? "Search" : ""),
((drvtype & DRV_FAT) ? " FAT" : (drvtype & DRV_VIRTUAL) ? " Virtual" : ""));
ResizeString(tempstr, drvstr, 160 / FONT_WIDTH_EXT, 8, false);
}else {
} else {
char numstr[32];
char bytestr[32];
FormatNumber(numstr, curr_entry->size);

4
source/main.c
View File

@ -17,10 +17,10 @@ void PowerOff()
}
int main()
void main()
{
u32 godmode_exit = GodMode();
ClearScreenF(true, true, COLOR_STD_BG);
(godmode_exit == GODMODE_EXIT_REBOOT) ? Reboot() : PowerOff();
return 0;
return;
}

100
source/abstraction/gw-start.s → source/start.s
View File

@ -1,42 +1,79 @@
#ifdef EXEC_GATEWAY
.section .text.start
.global _start
.align 4
.arm
_vectors:
ldr pc, =InfiniteLoop
.pool
ldr pc, =InfiniteLoop
.pool
ldr pc, =InfiniteLoop
.pool
ldr pc, =InfiniteLoop
.pool
ldr pc, =InfiniteLoop
.pool
ldr pc, =InfiniteLoop
.pool
@ if the binary is booted from Brahma/CakeHax/k9lh
@ the entrypoint is <start + 0x0>
@ framebuffers are already set
_start:
ldr sp,=0x22140000
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop @ dummy
b _skip_gw
@ if the binary is booted from the GW exploit
@ the entrypoint is <start + 0x30>
_start_gw:
@@wait for the arm11 kernel threads to be ready
ldr r1, =0x10000
mov r1, #0x10000
waitLoop9:
sub r1, #1
cmp r1, #0
bgt waitLoop9
ldr r1, =0x10000
mov r1, #0x10000
waitLoop92:
sub r1, #1
cmp r1, #0
bgt waitLoop92
@ copy the payload to the standard entrypoint (0x23F00000)
adr r0, _start
add r1, r0, #0x100000
ldr r2, .entry
.copy_binary_fcram:
cmp r0, r1
ldrlt r3, [r0], #4
strlt r3, [r2], #4
blt .copy_binary_fcram
@ setup framebuffers to look like Brahma/etc
ldr r0, .gw_fba
ldr r1, [r0, #0x18]
and r1, #1
ldr r1, [r0, r1, lsl #2] @ r1 := top framebuffer loc
mov r2, r1 @ r2 := top framebuffer loc
ldr r0, .gw_fbb
ldr r3, [r0, #0xC]
and r3, #1
ldr r3, [r0, r3, lsl #2] @ r3 := bottom framebuffer loc
ldr r0, .cakehax
stmia r0, {r1,r2,r3}
@ framebuffers properly set
ldr r3, .entry
bx r3
.gw_fba: .word 0x080FFFC0
.gw_fbb: .word 0x080FFFD0
.cakehax: .word 0x23FFFE00
.entry: .word 0x23F00000
_skip_gw:
@ Disable caches / mpu
mrc p15, 0, r4, c1, c0, 0 @ read control register
bic r4, #(1<<12) @ - instruction cache disable
@ -46,15 +83,13 @@ _start:
@ Clear bss
ldr r0, =__bss_start
ldr r1, =__bss_end
ldr r1, =__end__
mov r2, #0
.bss_clr:
cmp r0, r1
beq .bss_clr_done
str r2, [r0], #4
b .bss_clr
.bss_clr_done:
strlt r2, [r0], #4
blt .bss_clr
@ Give read/write access to all the memory regions
ldr r5, =0x33333333
@ -107,12 +142,9 @@ _start:
mov r1, #0x340
str r1, [r0]
ldr sp, =0x22160000
ldr r3, =main
blx r3
mov sp, #0x27000000
blx main
b _start
.pool
InfiniteLoop:
b InfiniteLoop
#endif // EXEC_GATEWAY