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authorKevin Hao <haokexin@gmail.com>2021-01-19 19:15:31 +0800
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2021-01-19 23:03:18 +0100
commitfe82de91af83a9212b6c704b1ce6cf6d129a108b (patch)
tree149da7698c651807d54eff452a40c0995df362db /arch/mips/cavium-octeon
parentd9e84fb1a34efd0ca3f68f481a051f26a952e383 (diff)
downloadlinux-fe82de91af83a9212b6c704b1ce6cf6d129a108b.tar.bz2
Revert "MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED_DTB=y"
This reverts commit d9df9fb901d25b941ab2cfb5b570d91fb2abf7a3. For the OCTEON boards, it need to patch the built-in DTB before using it. Previously it judges if it is a built-in DTB by checking fw_passed_dtb. But after commit 37e5c69ffd41 ("MIPS: head.S: Init fw_passed_dtb to builtin DTB", the fw_passed_dtb is initialized even when using built-in DTB. This causes the OCTEON boards boot broken due to an unpatched built-in DTB is used. Revert the commit d9df9fb901d2 to restore the codes before the fw_passed_dtb is used and then fix this issue. Fixed: 37e5c69ffd41 ("MIPS: head.S: Init fw_passed_dtb to builtin DTB") Cc: stable@vger.kernel.org Suggested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/cavium-octeon')
-rw-r--r--arch/mips/cavium-octeon/setup.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 982826ba0ef7..ce4e2806159b 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -1149,12 +1149,15 @@ void __init device_tree_init(void)
bool do_prune;
bool fill_mac;
- if (fw_passed_dtb) {
- fdt = (void *)fw_passed_dtb;
+#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
+ if (!fdt_check_header(&__appended_dtb)) {
+ fdt = &__appended_dtb;
do_prune = false;
fill_mac = true;
pr_info("Using appended Device Tree.\n");
- } else if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) {
+ } else
+#endif
+ if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) {
fdt = phys_to_virt(octeon_bootinfo->fdt_addr);
if (fdt_check_header(fdt))
panic("Corrupt Device Tree passed to kernel.");