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imx8: implement mmc_get_env_dev

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Implement mmc_get_env_dev for i.MX8.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Peng Fan 2018-10-18 14:28:20 +02:00 committed by Stefano Babic
parent 8aa1505b59
commit c1aae21d89
1 changed files with 32 additions and 0 deletions
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32
arch/arm/mach-imx/imx8/cpu.c
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@ -176,3 +176,35 @@ enum boot_device get_boot_device(void)
return boot_dev;
}
#ifdef CONFIG_ENV_IS_IN_MMC
__weak int board_mmc_get_env_dev(int devno)
{
return CONFIG_SYS_MMC_ENV_DEV;
}
int mmc_get_env_dev(void)
{
sc_rsrc_t dev_rsrc;
int devno;
sc_misc_get_boot_dev(-1, &dev_rsrc);
switch (dev_rsrc) {
case SC_R_SDHC_0:
devno = 0;
break;
case SC_R_SDHC_1:
devno = 1;
break;
case SC_R_SDHC_2:
devno = 2;
break;
default:
/* If not boot from sd/mmc, use default value */
return CONFIG_SYS_MMC_ENV_DEV;
}
return board_mmc_get_env_dev(devno);
}
#endif