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mx6sxsabresd: Use PARTUUID to specify the rootfs location

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mx6sxsabresd can run different kernel versions, such as NXP 4.1 or mainline.

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

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

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Fabio Estevam 2017-11-22 11:15:28 -02:00 • committed by Stefano Babic
parent e2162d709f
commit f086812acd
2 changed files with 4 additions and 2 deletions
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1
configs/mx6sxsabresd_defconfig
View file

@ -12,6 +12,7 @@ CONFIG_CMD_BOOTZ=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_I2C=y
CONFIG_CMD_MMC=y
CONFIG_CMD_PART=y
CONFIG_CMD_PCI=y
CONFIG_CMD_USB=y
# CONFIG_CMD_SETEXPR is not set

5
include/configs/mx6sxsabresd.h
View file

@ -57,9 +57,9 @@
"videomode=video=ctfb:x:800,y:480,depth:24,pclk:29850,le:89,ri:164,up:23,lo:10,hs:10,vs:10,sync:0,vmode:0\0" \
"mmcdev=2\0" \
"mmcpart=1\0" \
"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
"finduuid=part uuid mmc 2:2 uuid\0" \
"mmcargs=setenv bootargs console=${console},${baudrate} " \
"root=${mmcroot}\0" \
"root=PARTUUID=${uuid} rootwait rw\0" \
"loadbootscript=" \
"fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \
"bootscript=echo Running bootscript from mmc ...; " \
@ -67,6 +67,7 @@
"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 test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
"if run loadfdt; then " \