On Mon, Jan 12, 2026 at 03:40:57PM +0100, Marek Vasut wrote: > On 1/12/26 11:11 AM, Beleswar Padhi wrote: > > The OMAP2 SPL linker script (also used for K3 platforms) currently uses > > a 4-byte alignment directive after the __u_boot_list section. This > > alignment directive only advances the location counter without padding > > the actual binary output. > > > > When objcopy extracts u-boot-spl-nodtb.bin, it includes only actual > > data, stopping at the last byte of __u_boot_list (e.g., 0x41c359fc), > > not an aligned address (e.g., 0x41c35a00). So, when the FIT image > > containing device trees is concatenated to the SPL binary, it gets > > appended at this unaligned file size, causing libfdt validation failure. > > > > To fix this, move the alignment directive into the __u_boot_list section > > itself and make it 8-byte aligned as per DT spec. This forces the linker > > to include padding as part of the section data, ensuring objcopy > > includes the padding bytes in the binary and the appended FIT image > > starts at an 8-byte aligned boundary. > > > > Reported-by: Anshul Dalal <[email protected]> > > Closes: https://lore.kernel.org/u-boot/[email protected] > > Fixes: 0535e46d55d7 ("scripts/dtc: Update to upstream version > > v1.7.2-35-g52f07dcca47c") > > Signed-off-by: Beleswar Padhi <[email protected]> > > --- > > v2: Changelog: > > 1. Get rid of extra ALIGN() directive, replace it with a comment > > 2. Carry Reported-by, Closes and Fixes tag. > > > > Link to v1: > > https://lore.kernel.org/all/[email protected]/ > > > > arch/arm/mach-omap2/u-boot-spl.lds | 6 +++++- > > 1 file changed, 5 insertions(+), 1 deletion(-) > > > > diff --git a/arch/arm/mach-omap2/u-boot-spl.lds > > b/arch/arm/mach-omap2/u-boot-spl.lds > > index 3bb759d8a1c..5ad169a37b7 100644 > > --- a/arch/arm/mach-omap2/u-boot-spl.lds > > +++ b/arch/arm/mach-omap2/u-boot-spl.lds > > @@ -35,9 +35,13 @@ SECTIONS > > . = ALIGN(4); > > __u_boot_list : { > > KEEP(*(SORT(__u_boot_list*))); > > + /* > > + * Ensure 8-byte alignment at the end of the last section before > > + * DTB is appended, to satisfy DT spec alignment requirements > > + */ > > + . = ALIGN(8); > > } >.sram > Does this work even if the __u_boot_list section is empty ?
I'm not sure it can be empty, but it should still work. > I think what you need is unconditional alignment of the end of the binary, > that has to be 8 bytes aligned. We might need to look harder at what Anshul was suggesting in his reply, yeah. I'll chime in over there next. -- Tom
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