[PATCH 4/4] arm: mvebu: Remove dummy BIN header arguments for SPL binary

Pali Rohár pali at kernel.org
Thu Oct 21 16:46:09 CEST 2021

U-Boot SPL binary does not read BIN header arguments, so passing some dummy
values 0000005b and 00000068 has no effect for U-Boot SPL code.

Probably these two values comes from old Marvell DDR training code which
was separated from U-Boot and used it for some configuration.

Seems that two 32-bit values were specified here to ensure SPL code
alignment to 128-bit boundary as it is required e.g. for A370 or AXP
processors. Main kwbimage header is 64-byte long which is aligned to
128-bit boundary. Optional kwbheader is 32-bit long, number of BIN header
arguments is stored in 32-bit number. So for alignment to 128-bit boundary
is needed 64-bit padding which exactly these two 32-bit dummy arguments

Now when mkimage correctly aligns start of executable code in BIN header to
128-bit boundary, there is no requirement to put dummy argument values into
kwbimage. So remove them.

Signed-off-by: Pali Rohár <pali at kernel.org>
 arch/arm/mach-mvebu/kwbimage.cfg.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-mvebu/kwbimage.cfg.in b/arch/arm/mach-mvebu/kwbimage.cfg.in
index 72e67d75c325..049d23c6ef08 100644
--- a/arch/arm/mach-mvebu/kwbimage.cfg.in
+++ b/arch/arm/mach-mvebu/kwbimage.cfg.in
@@ -9,4 +9,4 @@ VERSION		1
 # Binary Header (bin_hdr) with DDR3 training code
-BINARY spl/u-boot-spl.bin 0000005b 00000068
+BINARY spl/u-boot-spl.bin

More information about the U-Boot mailing list