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| author | Kevin Hao <haokexin@gmail.com> | 2021-01-19 14:15:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-04 13:38:26 +0300 |
| commit | 50af0b3848b734b3c529f80a42647a1e4f40e015 (patch) | |
| tree | e21ff97753f818ecdb65dffc65813ed06001c249 /arch | |
| parent | 3f3614b4dd27078df16bc41814b22293a9c26d08 (diff) | |
| download | linux-50af0b3848b734b3c529f80a42647a1e4f40e015.tar.xz | |
Revert "MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED_DTB=y"
commit fe82de91af83a9212b6c704b1ce6cf6d129a108b upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/cavium-octeon/setup.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 561389d3fadb..b329cdb6134d 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -1158,12 +1158,15 @@ 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."); |