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Refactor AutoRCM tools

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This commit is contained in:
CTCaer
2020-12-26 16:38:21 +02:00
parent 2628044ba8
commit a85891ae00
8 changed files with 92 additions and 59 deletions
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13
bootloader/hos/secmon_exo.c
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@@ -314,20 +314,23 @@ void config_exosphere(launch_ctxt_t *ctxt, u32 warmboot_base, bool exo_new)
sdmmc_storage_set_mmc_partition(&emmc_storage, EMMC_BOOT0);
u32 sector;
u8 mod0, mod1;
// Get the correct RSA modulus byte masks.
nx_emmc_get_autorcm_masks(&mod0, &mod1);
// Iterate BCTs.
for (u32 i = 0; i < 4; i++)
{
sector = 1 + (32 * i); // 0x4000 bct + 0x200 offset.
sdmmc_storage_read(&emmc_storage, sector, 1, rsa_mod);
// Check if 2nd byte of modulus is correct.
if (rsa_mod[0x11] != 0x86)
if (rsa_mod[0x11] != mod1)
continue;
// Patch AutoRCM out.
if ((fuse_read_odm(4) & 3) != 3)
rsa_mod[0x10] = 0xF7;
else
rsa_mod[0x10] = 0x37;
rsa_mod[0x10] = mod0;
break;
}