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Fix mcu firmware version check (byte order was inverted)

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This commit is contained in:
TuxSH 2022-06-10 22:55:18 +01:00
parent 2c184cf7a3
commit 80aee6fdc1
1 changed files with 7 additions and 2 deletions
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9
arm9/source/main.c
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@ -121,8 +121,13 @@ void main(int argc, char **argv, u32 magicWord)
memset(__itcm_bss_start__, 0, __itcm_end__ - __itcm_bss_start__);
I2C_init();
I2C_readRegBuf(I2C_DEV_MCU, 0x00, (u8 *)&mcuFwVersion, 2);
if ((mcuFwVersion & 0xFFF) < 0x0100) error("Unsupported MCU FW version.");
u8 mcuFwVerHi = I2C_readReg(I2C_DEV_MCU, 0) - 0x10;
u8 mcuFwVerLo = I2C_readReg(I2C_DEV_MCU, 1);
mcuFwVersion = ((u16)mcuFwVerHi << 16) | mcuFwVerLo;
// Check if fw is older than factory. See https://www.3dbrew.org/wiki/MCU_Services#MCU_firmware_versions for a table
if (mcuFwVerHi < 1) error("Unsupported MCU FW version %d.%d.", (int)mcuFwVerHi, (int)mcuFwVerLo);
I2C_readRegBuf(I2C_DEV_MCU, 0x7F, mcuConsoleInfo, 9);
if(isInvalidLoader) error("Launched using an unsupported loader.");