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warp7: select uuid partition based on rootpart

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Assigning the UUID discovery path to a tweakable environment variable means
that later steps in the boot process - particularly a boot script can
change the target root partition of a particular Linux boot.

Retargeting the rootfs is an important feature when doing ping/pong
upgrades allowing a boot script to select ping or pong as necessary without
reprogramming the bootloader.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
This commit is contained in:
Bryan O'Donoghue 2018-04-24 18:46:42 +01:00 committed by Stefano Babic
parent 95b649f27d
commit 2948089815
1 changed files with 2 additions and 1 deletions
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3
include/configs/warp7.h
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@ -45,7 +45,8 @@
"ip_dyn=yes\0" \
"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
"finduuid=part uuid mmc 0:2 uuid\0" \
"rootpart=" __stringify(CONFIG_WARP7_ROOT_PART) "\0" \
"finduuid=part uuid mmc 0:${rootpart} uuid\0" \
"mmcargs=setenv bootargs console=${console},${baudrate} " \
"root=PARTUUID=${uuid} rootwait rw\0" \
"loadbootscript=" \