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 ---
include/configs/rockchip-common.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/configs/rockchip-common.h b/include/configs/rockchip-common.h index 9d183ce..e330cd5 100644 --- a/include/configs/rockchip-common.h +++ b/include/configs/rockchip-common.h @@ -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