Add new hybrid - attemt to fix 9000 series

This commit is contained in:
CTurt 2020-07-02 11:38:44 +01:00
parent 7b283ad390
commit 61aa1550cd
13 changed files with 234 additions and 0 deletions

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echo "Building payload"
ee-gcc -Ttext=0x01FFF800 payload.c -o payload.elf -nostartfiles -nostdlib -ffreestanding -Os -Wl,-z,max-page-size=0x1 # 2048
ee-objcopy -O binary payload.elf payload.bin -Wl,-z,max-page-size=0x1
ENTRY=`ee-objdump -t payload.elf | grep " _start"`
echo $ENTRY
# Doesn't seem to work on MinGW toolchain, so set manually if you're using that:
#ENTRY=0x`grep -o "^\S*" <<< $ENTRY`
ENTRY=0x01fff99c
echo $ENTRY
echo "Building crt0 (3.10)"
ee-gcc -Ttext=0x01500014 -DENTRY=$ENTRY -DGETBUFFERINTERNAL=0x2986a0 crt0.S -o crt0_3.10.elf -nostartfiles -nostdlib -ffreestanding -Wl,-z,max-page-size=0x1
ee-objcopy -O binary crt0_3.10.elf crt0_3.10.bin -Wl,-z,max-page-size=0x1
echo "Building crt0 (3.11)"
ee-gcc -Ttext=0x01500014 -DENTRY=$ENTRY -DGETBUFFERINTERNAL=0x2952f0 crt0.S -o crt0_3.11.elf -nostartfiles -nostdlib -ffreestanding -Wl,-z,max-page-size=0x1
ee-objcopy -O binary crt0_3.11.elf crt0_3.11.bin -Wl,-z,max-page-size=0x1
echo "Done."
echo "Insert crt0_3.10.bin into VIDEO_TS.IFO at offset 0x2bb4"
echo "Insert crt0_3.11.bin into VIDEO_TS.IFO at offset 0x2954"
echo "Insert payload.bin into VIDEO_TS.IFO at offset 0x3000"

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.set noreorder # If we're writing assembly, why would we want this?
.section .text.startup
.equ getBufferInternal, GETBUFFERINTERNAL
.equ payload, (0x2000000 - 0x800) # End of RAM
.global _start
_start:
la $a0, load
la $a1, 0
la $a2, 0
la $a3, 0
.global ExecPS2
ExecPS2:
la $v1, 7
syscall 7 # ExecPS2
load:
la $a0, 0
la $a1, 0 # 0 = VIDEO_TS.IFO, 1 = VTS_01_0.IFO
la $a2, 0x3000 / 0x800 # lba offset in file
la $a3, payload # Destination
la $t0, 0x800 / 0x800 # Count
la $t1, 0
la $v0, getBufferInternal
jalr $v0
nop
boot:
la $v1, 0x64; la $a0, 0; syscall 0x64 # FlushCache data writeback
la $v1, 0x64; la $a0, 2; syscall 0x64 # FlushCache instruction invalidate
# Point stack to end of scratchpad RAM
la $sp, 0x70004000
# Execute from relocated place
la $v0, ENTRY
j $v0
nop

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#include <stddef.h>
// Pick one
#define LOAD_FROM_VTS_02_0_IFO
//#define LOAD_FROM_SECTOR_RELATIVE_TO_VIDEO_TS_IFO (151 - 138 - 7)
#define min(a, b) (((a) < (b)) ? (a) : (b))
void (*pointToIFO)(unsigned int index, unsigned int lba, unsigned int offset);
void (*getDiscData)(unsigned int s, void *d);
int (*getBufferInternal)(void *filename, int type, int currentSector, void *dest, unsigned int sectorsRemaining, int curReadPos);
int (*SifIopReset)(char *, int);
int (*SifIopSync)(void);
void (*SifInitRpc)(int);
void (*SifExitRpc)(void);
#define ELF_PT_LOAD 1
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef struct {
u8 ident[16];
u16 type;
u16 machine;
u32 version;
u32 entry;
u32 phoff;
u32 shoff;
u32 flags;
u16 ehsize;
u16 phentsize;
u16 phnum;
u16 shentsize;
u16 shnum;
u16 shstrndx;
} elf_header_t;
typedef struct {
u32 type;
u32 offset;
void *vaddr;
u32 paddr;
u32 filesz;
u32 memsz;
u32 flags;
u32 align;
} elf_pheader_t;
__attribute__((noreturn)) void ExecPS2(void *entry, void *gp, int argc, char **argv) {
asm volatile("la $v1, 7; syscall 7");
//__builtin_unreachable();
}
static void *memcpy_(void *dest, void *src, size_t n) {
int i;
for(i = 0; i < n; i++) ((unsigned char *)dest)[i] = ((unsigned char *)src)[i];
return dest;
}
// Todo: maybe cache last sector to save 1 or 2 reads
static void *memset(void *dest, int c, size_t n) {
int i;
for(i = 0; i < n; i++) ((unsigned char *)dest)[i] = c;
return dest;
}
static void readData(void *dest, unsigned int offset, size_t n) {
unsigned char buffer[0x800];
unsigned int copied = 0;
#define remaining (n - copied)
if(offset % 0x800) {
getBufferInternal("", 1, offset / 0x800, buffer, 1, 0);
memcpy_(dest, buffer + offset % 0x800, min(0x800 - (offset % 0x800), n));
copied += min(0x800 - (offset % 0x800), n);
}
if(remaining >= 0x800) {
getBufferInternal("", 1, (offset + copied) / 0x800, dest + copied, remaining / 0x800, 0);
copied += (remaining / 0x800) * 0x800;
}
if(remaining > 0) {
getBufferInternal("", 1, (offset + copied) / 0x800, buffer, 1, 0);
memcpy_(dest + copied, buffer, remaining);
}
}
__attribute__((noreturn)) void _start(void) {
int i;
// Identify version based on jump target location
if((*(void **)0x5f1f38) == (void *)0x1500014) {
// 3.10
pointToIFO = (void *)0x25c880;
getDiscData = (void *)0x25c9f0;
getBufferInternal = (void *)0x002986a0;
SifIopReset = (void *)0x84fe0;
SifIopSync = (void *)0x85110;
SifInitRpc = (void *)0x84180;
SifExitRpc = (void *)0x84310;
}
else if((*(void **)0x3EA438) == (void *)0x1500014) {
// 3.11
pointToIFO = (void *)0x258a28;
getDiscData = (void *) 0x258b98;
getBufferInternal = (void *)0x2952f0;
SifIopReset = (void *)0x20e7d8;
SifIopSync = (void *)0x20e958;
SifInitRpc = (void *)0x208d80;
SifExitRpc = (void *)0x208f20;
}
#ifdef LOAD_FROM_VTS_02_0_IFO
// point to VTS_02_0.IFO
pointToIFO(2, 0, 0);
// Force a read from VTS_02_0.IFO
char head[64];
getDiscData(64, &head);
#define RELATIVE_SECTOR 0
#else
#define RELATIVE_SECTOR LOAD_FROM_SECTOR_RELATIVE_TO_VIDEO_TS_IFO
#endif
// Based on https://github.com/AKuHAK/uLaunchELF/blob/master/loader/loader.c
elf_header_t eh;
readData(&eh, RELATIVE_SECTOR * 0x800, sizeof(elf_header_t));
elf_pheader_t eph[eh.phnum];
readData(&eph, RELATIVE_SECTOR * 0x800 + eh.phoff, sizeof(elf_pheader_t) * eh.phnum);
for (i = 0; i < eh.phnum; i++) {
if (eph[i].type != ELF_PT_LOAD)
continue;
readData(eph[i].vaddr, RELATIVE_SECTOR * 0x800 + eph[i].offset, eph[i].filesz);
if(eph[i].memsz > eph[i].filesz) memset(eph[i].vaddr + eph[i].filesz, 0, eph[i].memsz - eph[i].filesz);
}
asm volatile("la $v1, 0x64; la $a0, 0; syscall 0x64"); // FlushCache data writeback
asm volatile("la $v1, 0x64; la $a0, 2; syscall 0x64"); // FlushCache instruction invalidate
//while(!SifIopReset("", 0));
//while(!SifIopSync());
//while(!SifIopReset("rom0:UDNL rom0:EELOADCNF", 0));
SifIopReset("rom0:UDNL rom0:EELOADCNF", 0);
while(!SifIopSync());
SifInitRpc(0);
SifExitRpc();
ExecPS2((void *)eh.entry, 0, 0, 0);
}

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