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hos: Add backup bootloader support

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This commit is contained in:
CTCaer
2020-08-15 12:30:18 +03:00
parent cd76d5ac09
commit 78c4e6510d
3 changed files with 82 additions and 26 deletions
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26
bootloader/hos/hos.c
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@@ -543,23 +543,41 @@ int hos_keygen(u8 *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt, launch_ctxt_t *hos_c
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;
u32 bootloader_offset = BOOTLOADER_MAIN_OFFSET;
ctxt->pkg1 = (void *)malloc(BOOTLOADER_SIZE);
try_load:
// Read package1.
ctxt->pkg1 = (void *)malloc(0x40000);
emummc_storage_set_mmc_partition(&emmc_storage, EMMC_BOOT0);
emummc_storage_read(&emmc_storage, 0x100000 / NX_EMMC_BLOCKSIZE, 0x40000 / NX_EMMC_BLOCKSIZE, ctxt->pkg1);
emummc_storage_read(&emmc_storage, bootloader_offset / NX_EMMC_BLOCKSIZE, BOOTLOADER_SIZE / NX_EMMC_BLOCKSIZE, ctxt->pkg1);
ctxt->pkg1_id = pkg1_identify(ctxt->pkg1);
if (!ctxt->pkg1_id)
{
_hos_crit_error("Unknown pkg1 version.");
EHPRINTFARGS("HOS version not supported!%s",
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)
{
EPRINTF("Trying backup bootloader...");
bootloader_offset = BOOTLOADER_BACKUP_OFFSET;
goto try_load;
}
return 0;
}
gfx_printf("Identified pkg1 and mkey %d\n\n", ctxt->pkg1_id->kb);
// Read the correct keyblob.
ctxt->keyblob = (u8 *)calloc(NX_EMMC_BLOCKSIZE, 1);
emummc_storage_read(&emmc_storage, 0x180000 / NX_EMMC_BLOCKSIZE + ctxt->pkg1_id->kb, 1, ctxt->keyblob);
emummc_storage_read(&emmc_storage, HOS_KEYBLOBS_OFFSET / NX_EMMC_BLOCKSIZE + ctxt->pkg1_id->kb, 1, ctxt->keyblob);
return 1;
}