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>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h
index afc5edf33b47c55f1cc39763f17d96bd938cd43c..be2f619f7ce89940370ce3d382335b911d9736e0 100644 (file)
--- a/include/configs/wandboard.h
+++ b/include/configs/wandboard.h
@@ -88,6 +88,7 @@
        "fdt_addr=0x18000000\0" \
        "ip_dyn=yes\0" \
        "mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
+       "finduuid=part uuid mmc 0:1 uuid\0" \
        "update_sd_firmware_filename=u-boot.imx\0" \
        "update_sd_firmware=" \
                "if test ${ip_dyn} = yes; then " \
@@ -129,6 +130,7 @@
 
 #define CONFIG_BOOTCOMMAND \
           "run findfdt; " \
+          "run finduuid; " \
           "run distro_bootcmd"
 
 #include <config_distro_bootcmd.h>