tree 25255de7566f162ca778c377318636eba42f4330
parent c693e92c7482557a4685c6ce8dda0db5cfdd734f
author Maximilian Brune <maximilian.brune@9elements.com> 1713197874 +0200
committer Felix Held <felix-coreboot@felixheld.de> 1719841459 +0000

commonlib/bsd/lz4_wrapper.c: Fix misaligned access

Currently the HiFive Unleashed produces the following exception:
[DEBUG]  Exception:          Load address misaligned
[DEBUG]  Hart ID:            0
[DEBUG]  Previous mode:      machine
[DEBUG]  Bad instruction pc: 0x080010d0
[DEBUG]  Bad address:        0x08026ab3
[DEBUG]  Stored ra:          0x080010c8
[DEBUG]  Stored sp:          0x08010cc8

The coreboot LZ4 decompression code does some misaligned access during
decompression which the FU540 apparently does not support in SRAM.

Make the compiler generate code that adheres to natural alignment by
fixing the LZ4_readLE16() function and creating LZ4_readLE32().

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Id165829bfd35be2bce2bbb019c208a304f627add
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81910
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>