[main] Add brick protection for RCM patched units

- If AutoRCM was found enabled, force disable it.
 (In case of chainloading.)
- Additionally disable AutoRCM function.
This commit is contained in:
ctcaer@gmail.com
2019-04-16 20:09:04 +03:00
parent ed047ef5f5
commit c80fecd080
6 changed files with 92 additions and 2 deletions

View File

@@ -318,3 +318,32 @@ int fuse_read_evp_thunk(u32 *iram_evp_thunks, u32 *iram_evp_thunks_len)
return 0;
}
bool fuse_check_patched_rcm()
{
// Check if XUSB in use.
if (FUSE(FUSE_RESERVED_SW) & (1<<7))
return true;
// Check if RCM is ipatched.
u32 word_count = FUSE(FUSE_FIRST_BOOTROM_PATCH_SIZE) & 0x7F;
u32 word_addr = 191;
while (word_count)
{
u32 word0 = fuse_read(word_addr);
u32 ipatch_count = (word0 >> 16) & 0xF;
for (u32 i = 0; i < ipatch_count; i++)
{
u32 word = fuse_read(word_addr - (i + 1));
u32 addr = (word >> 16) * 2;
if (addr == 0x769A)
return true;
}
word_addr -= word_count;
word_count = word0 >> 25;
}
return false;
}