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| author | Ye.Li <B37916@freescale.com> | 2014-06-26 19:25:09 +0800 |
|---|---|---|
| committer | Ye.Li <B37916@freescale.com> | 2014-06-30 11:31:43 +0800 |
| commit | 7feb8533f52677f641e3ff88a996cd3f1f722708 (patch) | |
| tree | f70c5bb35d29dc63b94bdafeee31cd723c516b0e /include/configs/mx6qsabreauto.h | |
| parent | 987c48c07c9ef62fa3fe55faa6f7369b30637127 (diff) | |
| download | u-boot-imx-7feb8533f52677f641e3ff88a996cd3f1f722708.zip u-boot-imx-7feb8533f52677f641e3ff88a996cd3f1f722708.tar.gz u-boot-imx-7feb8533f52677f641e3ff88a996cd3f1f722708.tar.bz2 | |
ENGR00320125 iMX6: Change to use dynamical mmcroot
The kernel changes to fix the mmcblk index with USDHC controllers
as below:
mmcblk0 ---> USDHC1
mmcblk1 ---> USDHC2
mmcblk2 ---> USDHC3
mmcblk3 ---> USDHC4
So in u-boot, the "mmcroot" must be updated together.
When booting from SD/MMC device, change the "mmcroot" to
dynamically set according to the boot USDHC controller.
It is the same mechanism as "mmcdev" used for kernel image loading.
Therefore, the uboot, kernel image, dtb and rootfs are required
in same SD/MMC card.
To disable the mmc dynamical detection, set the "mmcautodetect" to "no",
then "mmcroot" and "mmcdev" will not be overwritten.
When booting from other devices which needs to load kernel, dtb and
rootfs from SD/MMC card, their "mmcdev" reset vaule is
CONFIG_SYS_MMC_ENV_DEV and "mmcroot" reset value is CONFIG_MMCROOT.
Signed-off-by: Ye.Li <B37916@freescale.com>
Diffstat (limited to 'include/configs/mx6qsabreauto.h')
| -rw-r--r-- | include/configs/mx6qsabreauto.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/configs/mx6qsabreauto.h b/include/configs/mx6qsabreauto.h index 133e218..48e64e5 100644 --- a/include/configs/mx6qsabreauto.h +++ b/include/configs/mx6qsabreauto.h @@ -12,7 +12,7 @@ #define CONFIG_MACH_TYPE 3529 #define CONFIG_MXC_UART_BASE UART4_BASE #define CONFIG_CONSOLE_DEV "ttymxc3" -#define CONFIG_MMCROOT "/dev/mmcblk0p2" +#define CONFIG_MMCROOT "/dev/mmcblk2p2" /* SDHC3 */ #define CONFIG_SYS_USE_NAND @@ -40,7 +40,7 @@ #endif #define CONFIG_SYS_FSL_USDHC_NUM 2 -#define CONFIG_SYS_MMC_ENV_DEV 1 +#define CONFIG_SYS_MMC_ENV_DEV 1 /* SDHC3 */ #define CONFIG_SYS_MMC_ENV_PART 0 /* user partition */ #ifdef CONFIG_SYS_USE_SPINOR |