MirrorBackup/SafeA9LHInstaller
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Prefer OTP from memory to OTP from file

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Prevents using wrong OTP.bin by mistake/leftovers/sd card re-use.
This commit is contained in:
SciresM 2016-08-24 13:16:08 -07:00 committed by GitHub
parent 6f56b848a6
commit 684b10b168
1 changed files with 13 additions and 7 deletions
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20
source/installer.c
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@ -68,14 +68,20 @@ static inline void installer(u32 a9lhBoot)
//If making a first install, we need the OTP //If making a first install, we need the OTP
if(!a9lhBoot) if(!a9lhBoot)
{ {
//Read OTP // Prefer OTP from memory if available
const u8 zeroes[256] = {0};
path = "a9lh/otp.bin"; path = "a9lh/otp.bin";
if(fileRead((void *)OTP_OFFSET, path) != 256) if(memcmp((void *)OTP_FROM_MEM, zeroes, 256) == 0)
{ {
const u8 zeroes[256] = {0}; // Read OTP from file
if(memcmp((void *)OTP_FROM_MEM, zeroes, 256) == 0) if(fileRead((void *)OTP_OFFSET, path) != 256)
shutdown(1, "Error: otp.bin doesn't exist and can't be dumped"); {
shutdown(1, "Error: otp.bin doesn't exist and can't be dumped");
}
}
else
{
// Write OTP from memory to file
fileWrite((void *)OTP_FROM_MEM, path, 256); fileWrite((void *)OTP_FROM_MEM, path, 256);
memcpy((void *)OTP_OFFSET, (void *)OTP_FROM_MEM, 256); memcpy((void *)OTP_OFFSET, (void *)OTP_FROM_MEM, 256);
} }
@ -232,4 +238,4 @@ static inline void uninstaller(void)
sdmmc_nand_writesectors(0x5C000, MAX_STAGE2_SIZE / 0x200, (vu8 *)STAGE2_OFFSET); sdmmc_nand_writesectors(0x5C000, MAX_STAGE2_SIZE / 0x200, (vu8 *)STAGE2_OFFSET);
shutdown(2, "Uninstall: success!"); shutdown(2, "Uninstall: success!");
} }