extlinux_read_bootflow() allocates a buffer to read from file system without any alignment.
But for some block devices which transfer data via DMA, ARCH_DMA_MINALIGN alignment is required. For example, due to misaligned buffer, the below boot failure is observed. => boot CACHE: Misaligned operation at range [9efa25f8, 9efa27f8] CACHE: Misaligned operation at range [9efa25f8, 9efa27f8] CACHE: Misaligned operation at range [9efa25f8, 9efa27f8] CACHE: Misaligned operation at range [9efa25f8, 9efa27f8] ** Booting bootflow '[email protected]_1' with extlinux Ignoring unknown command: �D���D�� Boot failed (err=-14) Change the buffer alignment to ARCH_DMA_MINALIGN. Fixes: 31aefaf89a5b ("bootstd: Add an implementation of distro boot") Signed-off-by: Nam Cao <[email protected]> Tested-by: Javier Fernandez Pastrana <[email protected]> --- v2: - use ARCH_DMA_MINALIGN to be consistent with bootmeth_script [Simon] boot/bootmeth_extlinux.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/boot/bootmeth_extlinux.c b/boot/bootmeth_extlinux.c index ae0ad1d53e3..ac046705033 100644 --- a/boot/bootmeth_extlinux.c +++ b/boot/bootmeth_extlinux.c @@ -8,6 +8,7 @@ #define LOG_CATEGORY UCLASS_BOOTSTD +#include <asm/cache.h> #include <common.h> #include <bootdev.h> #include <bootflow.h> @@ -127,7 +128,7 @@ static int extlinux_read_bootflow(struct udevice *dev, struct bootflow *bflow) return log_msg_ret("try", ret); size = bflow->size; - ret = bootmeth_alloc_file(bflow, 0x10000, 1); + ret = bootmeth_alloc_file(bflow, 0x10000, ARCH_DMA_MINALIGN); if (ret) return log_msg_ret("read", ret); -- 2.39.5
