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haxchi/dsrom/iosu_patcher/arm_kernel/source/main.c

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#include "types.h"
#include "utils.h"
#include "reload.h"
#include "elf_patcher.h"
#include "../../payload/arm_user_bin.h"
#include "getbins.h"
static const char repairData_set_fault_behavior[] = {
0xE1,0x2F,0xFF,0x1E,0xE9,0x2D,0x40,0x30,0xE5,0x93,0x20,0x00,0xE1,0xA0,0x40,0x00,
0xE5,0x92,0x30,0x54,0xE1,0xA0,0x50,0x01,0xE3,0x53,0x00,0x01,0x0A,0x00,0x00,0x02,
0xE1,0x53,0x00,0x00,0xE3,0xE0,0x00,0x00,0x18,0xBD,0x80,0x30,0xE3,0x54,0x00,0x0D,
};
static const char repairData_set_panic_behavior[] = {
0x08,0x16,0x6C,0x00,0x00,0x00,0x18,0x0C,0x08,0x14,0x40,0x00,0x00,0x00,0x9D,0x70,
0x08,0x16,0x84,0x0C,0x00,0x00,0xB4,0x0C,0x00,0x00,0x01,0x01,0x08,0x14,0x40,0x00,
0x08,0x15,0x00,0x00,0x08,0x17,0x21,0x80,0x08,0x17,0x38,0x00,0x08,0x14,0x30,0xD4,
0x08,0x14,0x12,0x50,0x08,0x14,0x12,0x94,0xE3,0xA0,0x35,0x36,0xE5,0x93,0x21,0x94,
0xE3,0xC2,0x2E,0x21,0xE5,0x83,0x21,0x94,0xE5,0x93,0x11,0x94,0xE1,0x2F,0xFF,0x1E,
0xE5,0x9F,0x30,0x1C,0xE5,0x9F,0xC0,0x1C,0xE5,0x93,0x20,0x00,0xE1,0xA0,0x10,0x00,
0xE5,0x92,0x30,0x54,0xE5,0x9C,0x00,0x00,
};
static const char repairData_usb_root_thread[] = {
0xE5,0x8D,0xE0,0x04,0xE5,0x8D,0xC0,0x08,0xE5,0x8D,0x40,0x0C,0xE5,0x8D,0x60,0x10,
0xEB,0x00,0xB2,0xFD,0xEA,0xFF,0xFF,0xC9,0x10,0x14,0x03,0xF8,0x10,0x62,0x4D,0xD3,
0x10,0x14,0x50,0x00,0x10,0x14,0x50,0x20,0x10,0x14,0x00,0x00,0x10,0x14,0x00,0x90,
0x10,0x14,0x00,0x70,0x10,0x14,0x00,0x98,0x10,0x14,0x00,0x84,0x10,0x14,0x03,0xE8,
0x10,0x14,0x00,0x3C,0x00,0x00,0x01,0x73,0x00,0x00,0x01,0x76,0xE9,0x2D,0x4F,0xF0,
0xE2,0x4D,0xDE,0x17,0xEB,0x00,0xB9,0x92,0xE3,0xA0,0x10,0x00,0xE3,0xA0,0x20,0x03,
0xE5,0x9F,0x0E,0x68,0xEB,0x00,0xB3,0x20,
};
/* from smealum's iosuhax: must be placed at 0x05059938 */
static const char os_launch_hook[] = {
0x47, 0x78, 0x00, 0x00, 0xe9, 0x2d, 0x40, 0x0f, 0xe2, 0x4d, 0xd0, 0x08, 0xeb,
0xff, 0xfd, 0xfd, 0xe3, 0xa0, 0x00, 0x00, 0xeb, 0xff, 0xfe, 0x03, 0xe5, 0x9f,
0x10, 0x4c, 0xe5, 0x9f, 0x20, 0x4c, 0xe3, 0xa0, 0x30, 0x00, 0xe5, 0x8d, 0x30,
0x00, 0xe5, 0x8d, 0x30, 0x04, 0xeb, 0xff, 0xfe, 0xf1, 0xe2, 0x8d, 0xd0, 0x08,
0xe8, 0xbd, 0x80, 0x0f, 0x2f, 0x64, 0x65, 0x76, 0x2f, 0x73, 0x64, 0x63, 0x61,
0x72, 0x64, 0x30, 0x31, 0x00, 0x2f, 0x76, 0x6f, 0x6c, 0x2f, 0x73, 0x64, 0x63,
0x61, 0x72, 0x64, 0x00, 0x00, 0x00, 0x2f, 0x76, 0x6f, 0x6c, 0x2f, 0x73, 0x64,
0x63, 0x61, 0x72, 0x64, 0x00, 0x05, 0x11, 0x60, 0x00, 0x05, 0x0b, 0xe0, 0x00,
0x05, 0x0b, 0xcf, 0xfc, 0x05, 0x05, 0x99, 0x70, 0x05, 0x05, 0x99, 0x7e,
};
extern const int from_cbhc;
#define LAUNCH_SYSMENU 0
#define LAUNCH_HBL 1
#define LAUNCH_MOCHA 2
#define LAUNCH_CFW_IMG 3
int _main()
{
void(*invalidate_icache)() = (void(*)())0x0812DCF0;
void(*invalidate_dcache)(unsigned int, unsigned int) = (void(*)())0x08120164;
void(*flush_dcache)(unsigned int, unsigned int) = (void(*)())0x08120160;
flush_dcache(0x081200F0, 0x4001); // giving a size >= 0x4000 flushes all cache
int level = disable_interrupts();
unsigned int control_register = disable_mmu();
/* copy in ds vc title id to protect from installing/moving/deleting */
kernel_memcpy((void*)(get_titleprot2_bin()+get_titleprot2_bin_len()-12), (void*)0x01E70108, 4);
kernel_memcpy((void*)(get_titleprot_bin()+get_titleprot_bin_len()-8), (void*)0x01E70108, 4);
/* save if we are booted from CBHC */
kernel_memcpy((void*)(&from_cbhc), (void*)0x01E70110, 4);
/* get value CBHC or Haxchi used to boot up */
unsigned int launchmode = *(volatile int*)0x01E7010C;
/* Save the request handle so we can reply later */
*(volatile u32*)0x01E10000 = *(volatile u32*)0x1016AD18;
/* Patch kernel_error_handler to BX LR immediately */
*(volatile u32*)kernel_phys(0x08129A24) = 0xE12FFF1E;
void * pset_fault_behavior = (void*)0x081298BC;
kernel_memcpy(pset_fault_behavior, (void*)repairData_set_fault_behavior, sizeof(repairData_set_fault_behavior));
void * pset_panic_behavior = (void*)0x081296E4;
kernel_memcpy(pset_panic_behavior, (void*)repairData_set_panic_behavior, sizeof(repairData_set_panic_behavior));
void * pusb_root_thread = (void*)0x10100174;
kernel_memcpy(pusb_root_thread, (void*)repairData_usb_root_thread, sizeof(repairData_usb_root_thread));
void * pUserBinSource = (void*)0x01E50000;
void * pUserBinDest = (void*)0x101312D0;
kernel_memcpy(pUserBinDest, (void*)pUserBinSource, sizeof(arm_user_bin));
if(launchmode != LAUNCH_MOCHA)
{
// nop out memcmp hash checks
*(volatile u32*)crypto_phys(0x040017E0) = 0xE3A00000; // mov r0, #0
*(volatile u32*)crypto_phys(0x040019C4) = 0xE3A00000; // mov r0, #0
*(volatile u32*)crypto_phys(0x04001BB0) = 0xE3A00000; // mov r0, #0
*(volatile u32*)crypto_phys(0x04001D40) = 0xE3A00000; // mov r0, #0
// patch OS launch sig check
*(volatile u32*)mcp_phys(0x0500A818) = 0x20002000; // mov r0, #0; mov r0, #0
// fix 10 minute timeout that crashes MCP after 10 minutes of booting
*(volatile u32*)mcp_phys(0x05022474) = 0xFFFFFFFF; // NEW_TIMEOUT
}
if(launchmode != LAUNCH_MOCHA && launchmode != LAUNCH_CFW_IMG)
{
// jump to titleprot2_addr
*(volatile u32*)mcp_phys(0x05014670) = 0xF0F9F99C; //bl titleprot2_addr
// patch MCP authentication check
*(volatile u32*)mcp_phys(0x05014CAC) = 0x20004770; // mov r0, #0; bx lr
// replace ioctl 0x62 code with jump to wupserver
*(volatile u32*)mcp_phys(0x05026BA8) = 0x47780000; // bx pc
*(volatile u32*)mcp_phys(0x05026BAC) = 0xE59F1000; // ldr r1, [pc]
*(volatile u32*)mcp_phys(0x05026BB0) = 0xE12FFF11; // bx r1
*(volatile u32*)mcp_phys(0x05026BB4) = wupserver_addr; // wupserver code
// patch cert verification
*(volatile u32*)mcp_phys(0x05052A90) = 0xE3A00000; // mov r0, #0
*(volatile u32*)mcp_phys(0x05052A94) = 0xE12FFF1E; // bx lr
// patch IOSC_VerifyPubkeySign to always succeed
*(volatile u32*)mcp_phys(0x05052C44) = 0xE3A00000; // mov r0, #0
*(volatile u32*)mcp_phys(0x05052C48) = 0xE12FFF1E; // bx lr
// patch cached cert check
*(volatile u32*)mcp_phys(0x05054D6C) = 0xE3A00000; // mov r0, 0
*(volatile u32*)mcp_phys(0x05054D70) = 0xE12FFF1E; // bx lr
// redirect mcp_debug_print to mcp_syslog_print (0x0503DCF0)
*(volatile u32*)mcp_phys(0x05055454) = 0xEBFFA225; // bl 0x0503DCF0
if(from_cbhc) // coldboot specific patches
{
// change system.xml to syshax.xml
*(volatile u32*)mcp_rodata_phys(0x050600F0) = 0x79736861; // ysha
*(volatile u32*)mcp_rodata_phys(0x050600F4) = 0x782E786D; // x.xm
*(volatile u32*)mcp_rodata_phys(0x05060114) = 0x79736861; // ysha
*(volatile u32*)mcp_rodata_phys(0x05060118) = 0x782E786D; // x.xm
}
// jump to titleprot_addr
*(volatile u32*)mcp_d_r_phys(0x05107F70) = 0xF005FD0A; //bl titleprot_addr
//free some mcp_d_r room for our code
*(volatile u32*)mcp_d_r_phys(titleprot_addr-4) = 0x20004770; // mov r0, #0; bx lr
// overwrite mcp_d_r code with titleprot
kernel_memcpy((void*)mcp_d_r_phys(titleprot_addr), get_titleprot_bin(), get_titleprot_bin_len());
invalidate_dcache(mcp_d_r_phys(titleprot_addr), get_titleprot_bin_len());
// overwrite mcp_d_r code with titleprot2
kernel_memcpy((void*)mcp_d_r_phys(titleprot2_addr), get_titleprot2_bin(), get_titleprot2_bin_len());
invalidate_dcache(mcp_d_r_phys(titleprot2_addr), get_titleprot2_bin_len());
invalidate_icache();
//free some mcp_d_r room for our code
*(volatile u32*)mcp_d_r_phys(wupserver_addr-4) = 0x47700000; //bx lr
// overwrite mcp_d_r code with wupserver
kernel_memcpy((void*)mcp_d_r_phys(wupserver_addr), get_wupserver_bin(), get_wupserver_bin_len());
invalidate_dcache(mcp_d_r_phys(wupserver_addr), get_wupserver_bin_len());
invalidate_icache();
// apply IOS ELF launch hook (thanks dimok!)
*(volatile u32*)kernel_phys(0x0812A120) = ARM_BL(0x0812A120, kernel_launch_ios);
// allow any region title launch
*(volatile u32*)acp_phys(0xE0030498) = 0xE3A00000; // mov r0, #0
// allow custom bootLogoTex and bootMovie.h264
*(volatile u32*)acp_phys(0xE0030D68) = 0xE3A00000; // mov r0, #0
*(volatile u32*)acp_phys(0xE0030D34) = 0xE3A00000; // mov r0, #0
}
//custom fw.img reboot
if(launchmode == LAUNCH_CFW_IMG)
{
//copy in new fw.img path
int i;
for (i = 0; i < 32; i++)
if (i < 31)
((char*)mcp_rodata_phys(0x050663B4))[i] = ((char*)0x01E70000)[i];
else
((char*)mcp_rodata_phys(0x050663B4))[i] = (char)0;
// jump to launch_os_hook
*(volatile u32*)mcp_phys(0x050282AE) = 0xF031FB43; // bl launch_os_hook
// copy launch_os_hook into free mcp code space
for (i = 0; i < sizeof(os_launch_hook); i++)
((char*)mcp_phys(0x05059938))[i] = os_launch_hook[i];
}
if(from_cbhc) // coldboot specific patches
{
// patch default title id to system menu
*(volatile u32*)mcp_data_phys(0x050B817C) = *(volatile u32*)0x01E70100;
*(volatile u32*)mcp_data_phys(0x050B8180) = *(volatile u32*)0x01E70104;
// force check USB storage on load
*(volatile u32*)acp_phys(0xE012202C) = 0x00000001; // find USB flag
}
*(volatile u32*)(0x1555500) = 0;
/* REENABLE MMU */
restore_mmu(control_register);
invalidate_dcache(0x081298BC, 0x4001); // giving a size >= 0x4000 invalidates all cache
invalidate_icache();
enable_interrupts(level);
return 0;
}
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