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hos: add wrong pkg1 flashed detection

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This commit is contained in:
CTCaer 2021-08-28 17:55:30 +03:00
parent 063abb3e23
commit 9258025eea
1 changed files with 23 additions and 8 deletions
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31
bootloader/hos/hos.c
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@ -600,10 +600,12 @@ int hos_keygen(void *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt, bool stock, bool i
static int _read_emmc_pkg1(launch_ctxt_t *ctxt)
{
static const u32 BOOTLOADER_SIZE = 0x40000;
static const u32 BOOTLOADER_MAIN_OFFSET = 0x100000;
static const u32 BOOTLOADER_BACKUP_OFFSET = 0x140000;
static const u32 HOS_KEYBLOBS_OFFSET = 0x180000;
const u32 BOOTLOADER_SIZE = 0x40000;
const u32 BOOTLOADER_MAIN_OFFSET = 0x100000;
const u32 BOOTLOADER_BACKUP_OFFSET = 0x140000;
const u32 HOS_KEYBLOBS_OFFSET = 0x180000;
const u32 ERISTA_PKG1_ON_MARIKO_MAGIC = 0x20014770; // For 8.0.0 Erista and up.
u32 pk1_offset = h_cfg.t210b01 ? sizeof(bl_hdr_t210b01_t) : 0; // Skip T210B01 OEM header.
u32 bootloader_offset = BOOTLOADER_MAIN_OFFSET;
@ -617,9 +619,22 @@ try_load:
ctxt->pkg1_id = pkg1_identify(ctxt->pkg1 + pk1_offset);
if (!ctxt->pkg1_id)
{
_hos_crit_error("Unknown pkg1 version.");
EPRINTFARGS("HOS version not supported!%s",
(emu_cfg.enabled && !h_cfg.emummc_force_disable) ? "\nOr emuMMC corrupt!" : "");
// Check if wrong pkg1 was flashed.
bool wrong_pkg1;
u32 pkg1_build_check = *(u32 *)(ctxt->pkg1 + pk1_offset + 0x10);
if (!h_cfg.t210b01) // For Erista check if start is 0 and build offset is not 0.
wrong_pkg1 = *(u32 *)ctxt->pkg1 == 0 && pkg1_build_check != 0;
else // For Mariko works for 8.0.0 Erista pkg1 and up.
wrong_pkg1 = pkg1_build_check == ERISTA_PKG1_ON_MARIKO_MAGIC;
if (wrong_pkg1)
_hos_crit_error("Wrong pkg1 flashed!");
else
{
_hos_crit_error("Unknown pkg1 version.");
EPRINTFARGS("HOS version not supported!%s",
(emu_cfg.enabled && !h_cfg.emummc_force_disable) ? "\nOr emuMMC corrupt!" : "");
}
// Try backup bootloader.
if (bootloader_offset != BOOTLOADER_BACKUP_OFFSET)
@ -656,7 +671,7 @@ DPRINTF("Parsed GPT\n");
goto out;
// Read in package2 header and get package2 real size.
static const u32 BCT_SIZE = 0x4000;
const u32 BCT_SIZE = 0x4000;
bctBuf = (u8 *)malloc(BCT_SIZE);
nx_emmc_part_read(&emmc_storage, pkg2_part, BCT_SIZE / NX_EMMC_BLOCKSIZE, 1, bctBuf);
u32 *hdr = (u32 *)(bctBuf + 0x100);