colibri_imx7: use UUID for rootfs
Replace usage of "/dev/mmcblk*p*" with a proper UUID of rootfs
partition. This fixes the issue, when MMC controllers are probed in
a different order in U-boot and Linux kernel.
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
diff --git a/include/configs/colibri_imx7.h b/include/configs/colibri_imx7.h
index 7dfc92c..3e4f63e 100644
--- a/include/configs/colibri_imx7.h
+++ b/include/configs/colibri_imx7.h
@@ -49,14 +49,22 @@
#define CONFIG_SERVERIP 192.168.10.1
#define EMMC_BOOTCMD \
- "emmcargs=ip=off root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait\0" \
- "emmcboot=run setup; " \
+ "set_emmcargs=setenv emmcargs ip=off root=PARTUUID=${uuid} ro " \
+ "rootfstype=ext4 rootwait\0" \
+ "emmcboot=run setup; run emmcfinduuid; run set_emmcargs; " \
"setenv bootargs ${defargs} ${emmcargs} ${setupargs} " \
"${vidargs}; echo Booting from internal eMMC chip...; " \
"run m4boot && " \
- "load mmc 0:1 ${fdt_addr_r} ${soc}-colibri-emmc-${fdt_board}.dtb && " \
- "load mmc 0:1 ${kernel_addr_r} ${boot_file} && " \
- "run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}\0"
+ "load mmc ${emmcdev}:${emmcbootpart} ${fdt_addr_r} " \
+ "${soc}-colibri-emmc-${fdt_board}.dtb && " \
+ "load mmc ${emmcdev}:${emmcbootpart} ${kernel_addr_r} " \
+ "${boot_file} && run fdt_fixup && " \
+ "bootz ${kernel_addr_r} - ${fdt_addr_r}\0" \
+ "emmcbootpart=1\0" \
+ "emmcdev=0\0" \
+ "emmcfinduuid=part uuid mmc ${emmcdev}:${emmcrootpart} uuid\0" \
+ "emmcrootpart=2\0"
+
#define MEM_LAYOUT_ENV_SETTINGS \
"bootm_size=0x10000000\0" \
@@ -67,24 +75,25 @@
"ramdisk_addr_r=0x82100000\0"
#if defined(CONFIG_TARGET_COLIBRI_IMX7_NAND)
-#define SD_BOOTCMD \
- "sdargs=root=/dev/mmcblk0p2 ro rootwait\0" \
- "sdboot=run setup; setenv bootargs ${defargs} ${sdargs} " \
- "${setupargs} ${vidargs}; echo Booting from MMC/SD card...; " \
- "run m4boot && " \
- "load mmc 0:1 ${kernel_addr_r} ${kernel_file} && " \
- "load mmc 0:1 ${fdt_addr_r} ${soc}-colibri-${fdt_board}.dtb && " \
- "run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}\0"
+#define SD_BOOTDEV 0
#elif defined(CONFIG_TARGET_COLIBRI_IMX7_EMMC)
+#define SD_BOOTDEV 1
+#endif
+
#define SD_BOOTCMD \
- "sdargs=root=/dev/mmcblk1p2 ro rootwait\0" \
- "sdboot=run setup; setenv bootargs ${defargs} ${sdargs} " \
+ "set_sdargs=setenv sdargs root=PARTUUID=${uuid} ro rootwait\0" \
+ "sdboot=run setup; run sdfinduuid; run set_sdargs; " \
+ "setenv bootargs ${defargs} ${sdargs} " \
"${setupargs} ${vidargs}; echo Booting from MMC/SD card...; " \
"run m4boot && " \
- "load mmc 1:1 ${kernel_addr_r} ${kernel_file} && " \
- "load mmc 1:1 ${fdt_addr_r} ${soc}-colibri-${fdt_board}.dtb && " \
- "run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}\0"
-#endif
+ "load mmc ${sddev}:${sdbootpart} ${kernel_addr_r} ${kernel_file} && " \
+ "load mmc ${sddev}:${sdbootpart} ${fdt_addr_r} " \
+ "${soc}-colibri-${fdt_board}.dtb && " \
+ "run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}\0" \
+ "sdbootpart=1\0" \
+ "sddev=" __stringify(SD_BOOTDEV) "\0" \
+ "sdfinduuid=part uuid mmc ${sddev}:${sdrootpart} uuid\0" \
+ "sdrootpart=2\0"
#define NFS_BOOTCMD \