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pico-imx6ul: Use PARTUUID to specify the rootfs location

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Currently the rootfs location is passed via mmcblk number and using
the UUID method to specify the rootfs location is a better approach
working even if mmcblk number for the eMMC changes depending on the
kernel versions.

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
This commit is contained in:
Fabio Berton 2017-11-16 09:59:45 -02:00 committed by Stefano Babic
parent 9cc71cfa11
commit 65551e389a
2 changed files with 4 additions and 3 deletions
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1
configs/pico-imx6ul_defconfig
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@ -13,6 +13,7 @@ CONFIG_CMD_DFU=y
# CONFIG_CMD_FLASH is not set
CONFIG_CMD_GPIO=y
CONFIG_CMD_MMC=y
CONFIG_CMD_PART=y
CONFIG_CMD_USB=y
CONFIG_CMD_USB_MASS_STORAGE=y
CONFIG_CMD_DHCP=y

6
include/configs/pico-imx6ul.h
View File

@ -61,14 +61,15 @@
"fdt_addr=0x83000000\0" \
"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
"mmcautodetect=yes\0" \
CONFIG_DFU_ENV_SETTINGS \
"finduuid=part uuid mmc 0:2 uuid\0" \
"mmcargs=setenv bootargs console=${console},${baudrate} " \
"root=${mmcroot}\0" \
"root=PARTUUID=${uuid} rootwait rw\0" \
"loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \
"loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \
"mmcboot=echo Booting from mmc ...; " \
"run finduuid; " \
"run mmcargs; " \
"if run loadfdt; then " \
"bootz ${loadaddr} - ${fdt_addr}; " \
@ -147,6 +148,5 @@
#define CONFIG_SYS_MMC_ENV_DEV 0
#define CONFIG_SYS_MMC_ENV_PART 0
#define CONFIG_MMCROOT "/dev/mmcblk0p2"
#endif /* __PICO_IMX6UL_CONFIG_H */