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rockchip: use UUID for root partitions

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We use to use /dev/mmcbl0p7 as root partition, and pass it
to kernel by cmdline, but the mmc number in kernel in not
fixed, we need to change the bootargs to adapt it from time
to time.
We can use the UUID to fix it, the ID is from:
https://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/
ARM 32bit: 69dad710-2ce4-4e3c-b16c-21a1d49abed3
ARM 64bit: b921b045-1df0-41c3-af44-4c6f280d3fae

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This commit is contained in:
Kever Yang 2017-07-25 12:00:05 +08:00 committed by Philipp Tomsich
parent 4436c5db05
commit 42ec247e69
1 changed files with 7 additions and 1 deletions
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8
include/configs/rockchip-common.h
View file

@ -28,6 +28,12 @@
#endif
#define CONFIG_RANDOM_UUID
#ifdef CONFIG_ARM64
#define ROOT_UUID "B921B045-1DF0-41C3-AF44-4C6F280D3FAE;\0"
#else
#define ROOT_UUID "69DAD710-2CE4-4E3C-B16C-21A1D49ABED3;\0"
#endif
#define PARTS_DEFAULT \
"uuid_disk=${uuid_gpt_disk};" \
"name=loader1,start=32K,size=4000K,uuid=${uuid_gpt_loader1};" \
@ -36,7 +42,7 @@
"name=loader2,size=4MB,uuid=${uuid_gpt_loader2};" \
"name=atf,size=4M,uuid=${uuid_gpt_atf};" \
"name=boot,size=112M,bootable,uuid=${uuid_gpt_boot};" \
"name=rootfs,size=-,uuid=${uuid_gpt_rootfs};\0" \
"name=rootfs,size=-,uuid="ROOT_UUID
#endif