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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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28
nyx/nyx_gui/frontend/gui_tools.c
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@@ -70,7 +70,7 @@ static lv_obj_t *_create_container(lv_obj_t *parent)
bool get_autorcm_status(bool change)
{
u8 corr_mod_byte0;
u8 corr_mod0, mod1;
sdmmc_storage_t storage;
sdmmc_t sdmmc;
bool enabled = false;
@@ -84,41 +84,37 @@ bool get_autorcm_status(bool change)
sdmmc_storage_set_mmc_partition(&storage, EMMC_BOOT0);
sdmmc_storage_read(&storage, 0x200 / NX_EMMC_BLOCKSIZE, 1, tempbuf);
if ((fuse_read_odm(4) & 3) != 3)
corr_mod_byte0 = 0xF7;
else
corr_mod_byte0 = 0x37;
// Get the correct RSA modulus byte masks.
nx_emmc_get_autorcm_masks(&corr_mod0, &mod1);
if (tempbuf[0x10] != corr_mod_byte0)
// Check if 2nd byte of modulus is correct.
if (tempbuf[0x11] != mod1)
goto out;
if (tempbuf[0x10] != corr_mod0)
enabled = true;
// Change autorcm status if requested.
if (change)
{
int i, sect = 0;
u8 randomXor = 0;
// Iterate BCTs.
for (i = 0; i < 4; i++)
{
sect = (0x200 + (0x4000 * i)) / NX_EMMC_BLOCKSIZE;
sdmmc_storage_read(&storage, sect, 1, tempbuf);
if (!enabled)
{
do
{
randomXor = get_tmr_us() & 0xFF; // Bricmii style of bricking.
} while (!randomXor); // Avoid the lottery.
tempbuf[0x10] ^= randomXor;
}
tempbuf[0x10] = 0;
else
tempbuf[0x10] = corr_mod_byte0;
tempbuf[0x10] = corr_mod0;
sdmmc_storage_write(&storage, sect, 1, tempbuf);
}
enabled = !(enabled);
}
out:
free(tempbuf);
sdmmc_storage_end(&storage);