Hi, HongBo Liu
I faced this "MMC init failed" issue after I change the board boot kind. Originally the customized board is boot from SPI flash, I change to boot from eMMC, then this failed issue happened.
I found the reason of this issue, in the mmc_get_env_devno() function, it will get teh mmc device number, this is number is set by board_mmc_init() function. My emmc is 0 when boot from SPI flash, when boot from eMMC, the eMMC is set to 1.
int mmc_get_env_devno(void)
{
u32 soc_sbmr = readl(SRC_BASE_ADDR + 0x4);
u32 dev_no;
u32 bootsel;
bootsel = (soc_sbmr & 0x000000FF) >> 6 ;
/* If not boot from sd/mmc, use default value */
if (bootsel != 1)
return CONFIG_SYS_MMC_ENV_DEV;
/* BOOT_CFG2[3] and BOOT_CFG2[4] */
dev_no = (soc_sbmr & 0x00001800) >> 11;
/* need ubstract 1 to map to the mmc3 device id
* see the comments in board_mmc_init function
*/
if (2 == dev_no)
//dev_no--;
dev_no = CONFIG_SYS_MMC_ENV_DEV; => I fix this issue by modify the device number
return dev_no;
}
BR,
Xiao
