[U-Boot,v3,12/17] warp7: select uuid partition based on rootpart

Message ID 1523633481-20914-13-git-send-email-bryan.odonoghue@linaro.org
State Superseded
Delegated to: Stefano Babic
Headers show
Series
  • warp7: Enable automated OPTEE/HAB boot flow
Related show

Commit Message

Bryan O'Donoghue April 13, 2018, 3:31 p.m.
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>
---
 include/configs/warp7.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch

diff --git a/include/configs/warp7.h b/include/configs/warp7.h
index 344042c..54b3b31 100644
--- a/include/configs/warp7.h
+++ b/include/configs/warp7.h
@@ -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=" \