salaunch.c
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#include <PR/bcp.h>
#include <PR/R4300.h>
#include <PR/bbsim.h>
#include <PR/bbskapi.h>
#include <PR/os.h>
#include <PR/os_bb.h>
#include <PR/os_bbfs.h>
#include <PR/os_bbatb.h>
#include <PR/os_bbexec.h>
#include <PR/ramrom.h>
#include <PR/ultratypes.h>
#include "PR/bbnand.h"
#include "os_bbsa.h"
#include <sha1.h>
#define ALIGN_DCACHE __attribute__((aligned(DCACHE_LINESIZE)))
static u8 tik_data[PI_FLASH_PAGES_PER_BLOCK * PI_FLASH_PAGE_DATA_SIZE] ALIGN_DCACHE;
/* Load sysapp tik to iram */
int gng_loadticket(char *fname)
{
OSBbStatBuf fsStat;
s32 fd;
u32 ret = BB_SYSAPP_PASS;
BbContentMetaDataHead *cmd = (BbContentMetaDataHead *) tik_data;
fd = osBbFOpen(fname,"r");
if(fd<0){
return SAMETA_ERR_FS;
}
if( osBbFStat(fd, &fsStat, NULL, 0) < 0){
ret = SAMETA_ERR_FS;
goto exit;
}
if(fsStat.size > PI_FLASH_PAGES_PER_BLOCK * PI_FLASH_PAGE_DATA_SIZE){
ret = SAMETA_ERR_MEM;
goto exit;
}
if(osBbFRead(fd, 0, (u8 *) cmd, fsStat.size)<0){
ret = SAMETA_ERR_FS;
goto exit;
}
exit:
osBbFClose(fd);
return ret;
}
BbAesKey content_key;
BbAesKey bb_root_key = {0xb8190276, 0x7e25db27, 0x0f3449c5, 0xd94b162f};
int verify_sysapp_tik()
{
BbCertBase *certs[3];
BbContentMetaDataHead *cmd = (BbContentMetaDataHead *) tik_data;
BbShaHash hash_data;
SHA1Context sha;
BbAppLaunchCrls appRls;
char buf[256];
int ret;
/* copy from Andy's sk/boot.c */
certs[0] = (BbCertBase *)(tik_data +
sizeof(BbContentMetaDataHead));
certs[1] = (BbCertBase *)((u8 *)certs[0] + sizeof(BbRsaCert));
certs[2] = NULL;
/* calculate hash data here */
SHA1Reset(&sha);
SHA1Input(&sha, (u8 *) cmd, BB_CMD_HEAD_SIGNED_BYTES);
SHA1Result(&sha, (u8 *) hash_data);
ret = aes_SwDecrypt((u8 *) bb_root_key,
(u8 *)cmd->commonCmdIv,
(u8 *)&(cmd->key),
BB_CMD_ENCRYPTED_CHUNK_BYTES,
content_key);
sprintf(buf, "%x %x %x %x", content_key[0], content_key[1],
content_key[2], content_key[3]);
printstr(0xffff, 8, 6, buf);
osWritebackDCacheAll();
bzero(&appRls, sizeof(BbAppLaunchCrls));
return skVerifyHash(hash_data, (BbGenericSig *) &cmd->contentMetaDataSign, certs, &appRls);
}
static char block[BB_FL_BLOCK_SIZE] ALIGN_DCACHE;
static char block_enc[BB_FL_BLOCK_SIZE] ALIGN_DCACHE;
int verify_load_app(char *fname)
{
OSBbStatBuf fsStat;
BbContentMetaDataHead *cmd = (BbContentMetaDataHead *) tik_data;
int fd, rv;
unsigned int addr, off;
BbShaHash hash_data;
SHA1Context sha;
u32 code_rom_start, code_rom_end, code_start, code_end,
bss_start, bss_end, data_start, data_end;
int (*f) ();
char buf[128];
osSyncPrintf("Hello !\n");
fd = osBbFOpen(fname,"r");
if(fd<0) return SAMETA_ERR_FS;
if (osBbFStat(fd, &fsStat, NULL, 0) < 0){
osBbFClose(fd);
return SAMETA_ERR_FS;
}
SHA1Reset(&sha);
rv = osBbFRead(fd, 0, block_enc, BB_FL_BLOCK_SIZE);
osSyncPrintf("Decode 1st block \n");
/* for (rv = 0; rv < BB_FL_BLOCK_SIZE; rv+=128) {
aes_SwDecrypt((u8 *) content_key,
(u8 *)cmd->iv,
block_enc+rv,
128,
block+rv);
osSyncPrintf("Hi %d \n", rv);
} */
aes_SwDecrypt((u8 *) content_key,
(u8 *)cmd->iv,
block_enc,
BB_FL_BLOCK_SIZE,
block);
osSyncPrintf("Decode 1st block done\n");
code_rom_start = *(unsigned int*)(block);
code_rom_end = *(unsigned int*)(block+4);
code_start = *(unsigned int*)(block+8);
code_end = *(unsigned int*)(block+0xc);
bss_start = *(unsigned int*)(block+0x10);
bss_end = *(unsigned int*)(block+0x14);
data_start = *(unsigned int*)(block+0x18);
data_end = *(unsigned int*)(block+0x1c);
/* XXXXX Todo: make sure code_start > code_rom_start */
addr = code_start - code_rom_start - 8 * sizeof(int);
bcopy(block, (void*)addr, BB_FL_BLOCK_SIZE);
addr += BB_FL_BLOCK_SIZE;
off = BB_FL_BLOCK_SIZE;
SHA1Input(&sha, (u8 *) block, BB_FL_BLOCK_SIZE);
while (rv >= 0 && off < fsStat.size) {
rv = osBbFRead(fd, off, (void*)block_enc, BB_FL_BLOCK_SIZE);
aes_SwDecrypt((u8 *) content_key,
(u8 *)cmd->iv,
block_enc,
BB_FL_BLOCK_SIZE,
addr);
osSyncPrintf("Decode block at 0x%x \n", off);
SHA1Input(&sha, (u8 *) addr, BB_FL_BLOCK_SIZE);
if (rv <= 0) break;
addr += BB_FL_BLOCK_SIZE;
off += BB_FL_BLOCK_SIZE;
}
if (rv < 0) return rv;
osBbFClose(fd);
printstr(0xffff, 8, 6, "Oh..., Security passed!");
sprintf(buf, "c_rom 0x%x 0x%x", code_rom_start, code_rom_end);
printstr(0xffff, 4, 7, buf);
sprintf(buf, "c_ddr 0x%x 0x%x", code_start, code_end);
printstr(0xffff, 4, 8, buf);
sprintf(buf, "bss 0x%x 0x%x", bss_start, bss_end);
printstr(0xffff, 4, 9, buf);
sprintf(buf, "data 0x%x 0x%x", data_start, data_end);
printstr(0xffff, 4, 10, buf);
osWritebackDCacheAll();
SHA1Result(&sha, (u8 *) hash_data);
if (bcmp(hash_data, cmd->hash, sizeof(hash_data)) != 0)
return -1;
osRomBase = PI_DOM1_ADDR2;
osMemSize = 0x800000;
osTvType = OS_TV_NTSC;
osWritebackDCacheAll();
IO_WRITE(MI_INTR_MASK_REG,
MI_INTR_MASK_CLR_SP |
MI_INTR_MASK_CLR_SI |
MI_INTR_MASK_CLR_AI |
MI_INTR_MASK_CLR_VI |
MI_INTR_MASK_CLR_PI |
MI_INTR_MASK_CLR_DP);
IO_WRITE(MI_INTR_EMASK_REG,
MI_INTR_MASK_CLR_FLASH |
MI_INTR_MASK_CLR_AES |
MI_INTR_MASK_CLR_PI_ERR |
MI_INTR_MASK_CLR_USB0 |
MI_INTR_MASK_CLR_USB1 |
MI_INTR_MASK_CLR_BUT |
MI_INTR_MASK_CLR_MD);
__osDisableInt();
IO_WRITE(PI_ACCESS_REG, PI_ACCESS_ALL);
IO_WRITE(PI_ERROR_REG, PI_ERROR_KERNEL_INTR);
IO_WRITE(USB0_SECURE_MODE_REG, USB_SECURE_MODE_OFF);
IO_WRITE(USB1_SECURE_MODE_REG, USB_SECURE_MODE_OFF);
IO_WRITE(MI_SEC_MODE_REG, MI_SEC_MODE_IRAM_ACCESS|MI_SEC_MODE_BUT_TRAP_EN);
osInvalICache((void*) code_start, code_end - code_start);
osInvalDCache((void*) data_start, data_end - data_start);
bzero((void *)bss_start, bss_end - bss_start);
f = (void *) code_start;
(*f)();
printstr(0xff01, 8, 8, "Oh..., Why am I here?");
osWritebackDCacheAll();
for (;;);
return 0;
}