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Rewrote NAND safe restore for aeskeydb sector

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d0k3 2017-12-11 17:09:07 +01:00
parent 585172f810
commit c17a2a9155
2 changed files with 11 additions and 20 deletions
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4
arm9/source/nand/essentials.h
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@ -5,10 +5,6 @@
#define ESSENTIAL_NAME "essential.exefs"
// start sector of the essential backup in NAND
// careful with this, essential backup should never reach sector 0x96
#define ESSENTIAL_SECTOR 0x1
// magic number for essential backup
#define ESSENTIAL_MAGIC 'n', 'a', 'n', 'd', '_', 'h', 'd', 'r', 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00

27
arm9/source/utils/nandutil.c
View File

@ -374,11 +374,6 @@ u32 SafeRestoreNandDump(const char* path) {
return 1;
if (!SetWritePermissions(PERM_SYS_LVL1, true)) return 1;
// build essential backup from NAND
EssentialBackup* essential = (EssentialBackup*) TEMP_BUFFER;
if (BuildEssentialBackup("1:/nand.bin", essential) != 0)
memset(essential, 0, sizeof(EssentialBackup));
// open file, get size
FIL file;
if (fvx_open(&file, path, FA_READ | FA_OPEN_EXISTING) != FR_OK)
@ -432,14 +427,14 @@ u32 SafeRestoreNandDump(const char* path) {
// main processing loop
u32 ret = 0;
u32 sector0 = 1; // start at the sector after NCSD
u32 sector0 = SECTOR_SECRET + COUNT_SECRET; // start at the sector after secret sector
if (!ShowProgress(0, 0, path)) ret = 1;
for (int p = -1; p < 8; p++) {
for (int p = 0; p < 8; p++) {
NandPartitionInfo np_info;
u32 idx = (p < 0) ? 0 : p;
u32 type = (p < 0) ? NP_TYPE_SECRET : NP_TYPE_FIRM;
u32 subtype = (p < 0) ? NP_SUBTYPE_CTR_N : NP_SUBTYPE_CTR;
u32 sector1 = (GetNandNcsdPartitionInfo(&np_info, type, subtype, idx, &ncsd_loc) == 0) ? np_info.sector : fsize / 0x200;
u32 type = NP_TYPE_FIRM;
u32 subtype = NP_SUBTYPE_CTR;
u32 sector1 = (GetNandNcsdPartitionInfo(&np_info, type, subtype, p, &ncsd_loc) == 0) ? np_info.sector : fsize / 0x200;
if (sector1 < sector0) ret = 1; // safety check
for (u32 s = sector0; (s < sector1) && (ret == 0); s += MAIN_BUFFER_SIZE / 0x200) {
u32 count = min(MAIN_BUFFER_SIZE / 0x200, (sector1 - s));
if (ReadNandFile(&file, MAIN_BUFFER, s, count, 0xFF)) ret = 1;
@ -447,7 +442,7 @@ u32 SafeRestoreNandDump(const char* path) {
if (!ShowProgress(s + count, fsize / 0x200, path)) ret = 1;
}
if (sector1 == fsize / 0x200) break; // at file end
sector0 = np_info.sector + np_info.count;
sector0 = np_info.sector + np_info.count; // skip partition
}
fvx_close(&file);
@ -456,9 +451,6 @@ u32 SafeRestoreNandDump(const char* path) {
(WriteNandSectors((u8*) &ncsd_img, 0, 1, 0xFF, NAND_SYSNAND) != 0))
ret = 1;
// inject essential backup to NAND
WriteNandSectors((u8*) essential, ESSENTIAL_SECTOR, (sizeof(EssentialBackup) + 0x1FF) / 0x200, 0xFF, NAND_SYSNAND);
return ret;
}
@ -547,14 +539,17 @@ u32 SafeInstallFirm(const char* path, u32 slots) {
if (fix_sector0x96 && ((ReadNandSectors(sector0x96, 0x96, 1, 0x11, NAND_SYSNAND) != 0) ||
(ValidateSecretSector(sector0x96) != 0))) {
ShowPrompt(false, "!THIS IS BAD!\n \nFailed verifying sector 0x96.\nTry to fix before reboot!");
return 1;
}
for (u32 s = 0; s < 8; s++) {
NandPartitionInfo info;
if (!((slots>>s)&0x1)) continue;
if ((GetNandPartitionInfo(&info, NP_TYPE_FIRM, NP_SUBTYPE_CTR, s, NAND_SYSNAND) != 0) ||
(ReadNandBytes(firm, info.sector*0x200, firm_size, info.keyslot, NAND_SYSNAND) != 0) ||
(sha_cmp(firm_sha, firm, firm_size, SHA256_MODE) != 0))
(sha_cmp(firm_sha, firm, firm_size, SHA256_MODE) != 0)) {
ShowPrompt(false, "!THIS IS BAD!\n \nFailed verifying FIRM%lu.\nTry to fix before reboot!", s);
return 1;
}
}
return 0;