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| author | Manfred Schlaegl <manfred.schlaegl@ginzinger.com> | 2017-05-10 15:41:32 +0200 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2017-05-11 15:03:12 +0800 |
| commit | b505caa5b83e42130772d9b3804c459d09ad6e10 (patch) | |
| tree | d354b9892404c8d26ac23cb4998bfa24a89c9098 | |
| parent | 95b2ee328ead6899a78ce92fe9bf27547ced6671 (diff) | |
| download | u-boot-imx-b505caa5b83e42130772d9b3804c459d09ad6e10.zip u-boot-imx-b505caa5b83e42130772d9b3804c459d09ad6e10.tar.gz u-boot-imx-b505caa5b83e42130772d9b3804c459d09ad6e10.tar.bz2 | |
ARM: fixed relocation using proper alignment
Using u-boot-2017.05 on i.MX6UL we ran into following problem:
Initially U-Boot could be started normally.
If we added one random command in configuration, the newly generated
image hung at startup (last output was DRAM: 256 MiB).
We tracked this down to a data abort within relocation (relocated_code).
relocated_code in arch/arm/lib/relocate.S copies 8 bytes per loop
iteration until the source pointer is equal to __image_copy_end.
In a good case __image_copy_end was aligned to 8 bytes, so the loop
stopped as suggested, but in an errornous case __image_copy_end was
not aligned to 8 bytes, so the loop ran out of bounds and caused a
data abort exception.
This patches solves the issue by aligning __image_copy_end to 8 byte
using the linker script related to arm.
From Community: http://patchwork.ozlabs.org/patch/760592/
Signed-off-by: Peng Fan <peng.fan@nxp.com>
| -rw-r--r-- | arch/arm/cpu/u-boot.lds | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds index 38defae..aaf7191 100644 --- a/arch/arm/cpu/u-boot.lds +++ b/arch/arm/cpu/u-boot.lds @@ -165,7 +165,7 @@ SECTIONS *(.__efi_runtime_rel_stop) } - . = ALIGN(4); + . = ALIGN(8); .image_copy_end : { |