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sept: Disallow sept if improper BCT to avoid black screen

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This commit is contained in:
CTCaer
2021-02-06 03:24:58 +02:00
parent 0857d7ff0e
commit ea83566fc9
5 changed files with 50 additions and 71 deletions
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68
nyx/nyx_gui/hos/sept.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2019 CTCaer
* Copyright (c) 2019-2021 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -68,72 +68,6 @@ extern volatile nyx_storage_t *nyx_str;
extern bool is_ipl_updated(void *buf);
extern void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size);
void check_sept()
{
if (h_cfg.t210b01)
{
h_cfg.sept_run = true;
return;
}
hos_eks_get();
// Check if non-hekate payload is used for sept and restore it.
if (h_cfg.sept_run)
{
if (!f_stat("sept/payload.bak", NULL))
{
f_unlink("sept/payload.bin");
f_rename("sept/payload.bak", "sept/payload.bin");
}
return;
}
u8 *pkg1 = (u8 *)calloc(1, 0x40000);
sdmmc_storage_t storage;
sdmmc_t sdmmc;
if (!sdmmc_storage_init_mmc(&storage, &sdmmc, SDMMC_BUS_WIDTH_8, SDHCI_TIMING_MMC_HS400))
{
EPRINTF("Failed to init eMMC.");
goto out_free;
}
sdmmc_storage_set_mmc_partition(&storage, EMMC_BOOT0);
// Read package1.
char *build_date = malloc(32);
sdmmc_storage_read(&storage, 0x100000 / NX_EMMC_BLOCKSIZE, 0x40000 / NX_EMMC_BLOCKSIZE, pkg1);
const pkg1_id_t *pkg1_id = pkg1_identify(pkg1, build_date);
free(build_date);
if (!pkg1_id)
{
EPRINTF("Unknown pkg1 version.");
goto out_free;
}
if (pkg1_id->kb >= KB_FIRMWARE_VERSION_700 && !h_cfg.sept_run)
{
u32 key_idx = 0;
if (pkg1_id->kb >= KB_FIRMWARE_VERSION_810)
key_idx = 1;
if (h_cfg.eks && h_cfg.eks->enabled[key_idx] >= pkg1_id->kb)
{
h_cfg.sept_run = true;
goto out_free;
}
sdmmc_storage_end(&storage);
reboot_to_sept((u8 *)pkg1 + pkg1_id->tsec_off, pkg1_id->kb);
}
out_free:
free(pkg1);
sdmmc_storage_end(&storage);
}
int reboot_to_sept(const u8 *tsec_fw, u32 kb)
{
FIL fp;