wandboard: Use PARTUUID to specify the rootfs location

Currently the rootfs location is passed via mmcblk number and the
problem with this approach is that the mmcblk number for the eMMC
changes depending on the kernel version.

In order to avoid such issue, use UUID method to specify the rootfs
location.

This change was made based on U-Boot commit:

  - ca4f338e2efece5196eb2178e5f7d07be828da6e

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h
index d34122e2a0126ca71ee9145e0656469a2830fabb..d563eadc2b0e6edefd5f6d5ab624d4b870cf420c 100644 (file)
--- a/include/configs/wandboard.h
+++ b/include/configs/wandboard.h
@@ -84,6 +84,9 @@
 #define CONFIG_IMX_VIDEO_SKIP
 #endif
 
+#define CONFIG_PARTITION_UUIDS
+#define CONFIG_CMD_PART
+
 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 #define CONFIG_EXTRA_ENV_SETTINGS \
        "console=ttymxc0,115200\0" \
@@ -95,6 +98,7 @@
        "fdt_addr=0x18000000\0" \
        "ip_dyn=yes\0" \
        "mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
+       "finduuid=part uuid mmc 0:2 uuid\0" \
        "update_sd_firmware_filename=u-boot.imx\0" \
        "update_sd_firmware=" \
                "if test ${ip_dyn} = yes; then " \
@@ -136,6 +140,7 @@
 
 #define CONFIG_BOOTCOMMAND \
           "run findfdt; " \
+          "run finduuid; " \
           "run distro_bootcmd"
 
 #include <config_distro_bootcmd.h>