When uncompressing kernel image this patch convert ATAG_REVISION structure
into DT "/revision" entry. For legacy bootloaders which do not support DT
booting there is no other option how to pass ATAG_REVISION into kernel.
Signed-off-by: Pali Rohár <pali.rohar@xxxxxxxxx>
---
arch/arm/boot/compressed/atags_to_fdt.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
index 9448aa0..e7e1cc9 100644
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -171,6 +171,8 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
cpu_to_fdt32(atag->u.mem.size);
}
+ } else if (atag->hdr.tag == ATAG_REVISION) {
+ setprop_cell(fdt, "/", "revision", atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_INITRD2) {
uint32_t initrd_start, initrd_size;
initrd_start = atag->u.initrd.start;
--
1.7.9.5
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