diff options
| author | Sam Protsenko <semen.protsenko@linaro.org> | 2017-09-21 22:37:56 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-09-29 14:07:57 -0400 |
| commit | f6d245b8c56c8188cef884a45de7fd714c940cad (patch) | |
| tree | 73ec087d346471fc038e2b76471e28917550fcce /include/configs | |
| parent | 8adb6ec885aac9a941097cbaeb8516bd46fc66ee (diff) | |
arm: am57xx: Fix Linux boot from eMMC
Right now on OMAP5-based boards we have only one partition defined for
Linux boot, which is rootfs. That doesn't work with bootpart=1:2 (that
is defined in include/environment/ti/boot.h). To fix Linux boot we may
either:
1. Change bootpart to be 1:1
2. Or add preceding partition, so that rootfs is actually 1:2
Second choice seems more reasonable, as DFU is already using similar
partition table and can rely on bootpart to be 1:2.
This patch adds "bootloader" partition. So now eMMC layout for Linux
boot looks like this:
offset content size partition
(KiB) (KiB)
Reviewed-by: Tom Rini <trini@konsulko.com>
=======================================================================
0 +--------------------------------+
| MBR/GPT header | 128 -
128 +--------------------------------+
| MLO | 256 -
384 +--------------------------------+
| u-boot.img | 1792 bootloader
2176 +--------------------------------+
| //////////// hole //////////// | 256 -
2432 +--------------------------------+
| U-Boot environment | 128 -
2560 +--------------------------------+
| U-Boot environment (redundant) | 128 -
2688 +--------------------------------+
| rootfs | remaining rootfs
end +--------------------------------+
=======================================================================
Guard hole appears because U-Boot environment offset was calculated for
Android partition table, which has two additional partitions in place of
that hole ("environment" and "misc" partitions).
This patch also changes rootfs offset from 2 MiB further to 2688 KiB,
so that there won't be any collisions with U-Boot environment when we
flash rootfs.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Diffstat (limited to 'include/configs')
| -rw-r--r-- | include/configs/am57xx_evm.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/configs/am57xx_evm.h b/include/configs/am57xx_evm.h index 0c70c53050..bf555ccdc2 100644 --- a/include/configs/am57xx_evm.h +++ b/include/configs/am57xx_evm.h @@ -44,7 +44,8 @@ #define PARTS_DEFAULT \ /* Linux partitions */ \ "uuid_disk=${uuid_gpt_disk};" \ - "name=rootfs,start=2MiB,size=-,uuid=${uuid_gpt_rootfs}\0" \ + "name=bootloader,start=384K,size=1792K,uuid=${uuid_gpt_bootloader};" \ + "name=rootfs,start=2688K,size=-,uuid=${uuid_gpt_rootfs}\0" \ /* Android partitions */ \ "partitions_android=" \ "uuid_disk=${uuid_gpt_disk};" \ |