soc/amd/common/block/lpc: Set CBFS_CACHE_ALIGN to 64 when using SPI DMA
AMD platforms require the destination buffer to be 64 byte aligned
when using the SPI DMA controller.
BUG=b:179699789
TEST=gdb -ex 'p cbfs_cache' /tmp/coreboot/guybrush/cbfs/fallback/ramstage.debug
$1 = {buf = 0x0, size = 0, alignment = 64, last_alloc = 0x0, second_to_last_alloc = 0x0, free_offset = 0}
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I228372ff19f958c8e9cf5e51dcc3d37d9f92abec
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58707
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
diff --git a/src/soc/amd/common/block/lpc/Kconfig b/src/soc/amd/common/block/lpc/Kconfig
index e775606..76f4ec7 100644
--- a/src/soc/amd/common/block/lpc/Kconfig
+++ b/src/soc/amd/common/block/lpc/Kconfig
@@ -16,6 +16,12 @@
help
Select this option to enable SPI DMA support.
+# The LPC SPI DMA controller requires the destination buffers to be 64 byte
+# aligned.
+config CBFS_CACHE_ALIGN
+ int
+ default 64 if SOC_AMD_COMMON_BLOCK_LPC_SPI_DMA
+
config SOC_AMD_COMMON_BLOCK_HAS_ESPI
bool
help