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| author | Chuanhong Guo <gch981213@gmail.com> | 2020-10-29 21:22:57 +0800 |
|---|---|---|
| committer | Chuanhong Guo <gch981213@gmail.com> | 2020-10-29 21:34:56 +0800 |
| commit | c063e27e02a9dcac0e7f5877fb154e58fa3e1a69 (patch) | |
| tree | 04a24e67d6f46959e90af281496773c7baabcefc | |
| parent | 42af05ca1fa23bb65b0961201dabb72806172ca5 (diff) | |
| download | upstream-c063e27e02a9dcac0e7f5877fb154e58fa3e1a69.tar.gz upstream-c063e27e02a9dcac0e7f5877fb154e58fa3e1a69.tar.bz2 upstream-c063e27e02a9dcac0e7f5877fb154e58fa3e1a69.zip | |
kernel: mips: zboot: put appended dtb into a section
This will make a separated section for dtb appear in ELF, and we can
then use objcopy to patch a dtb into vmlinuz when RAW_APPENDED_DTB
is set in kernel config.
command to patch a dtb:
objcopy --set-section-flags=.appended_dtb=alloc,contents \
--update-section=.appended_dtb=<target>.dtb vmlinuz vmlinuz-dtb
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
| -rw-r--r-- | target/linux/generic/pending-5.4/311-MIPS-zboot-put-appended-dtb-into-a-section.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.4/311-MIPS-zboot-put-appended-dtb-into-a-section.patch b/target/linux/generic/pending-5.4/311-MIPS-zboot-put-appended-dtb-into-a-section.patch new file mode 100644 index 0000000000..3f8808f702 --- /dev/null +++ b/target/linux/generic/pending-5.4/311-MIPS-zboot-put-appended-dtb-into-a-section.patch @@ -0,0 +1,36 @@ +From 7d1531c81c0fb4c93bea8dc316043ad0e4d0c270 Mon Sep 17 00:00:00 2001 +From: Chuanhong Guo <gch981213@gmail.com> +Date: Sun, 25 Oct 2020 23:19:40 +0800 +Subject: [PATCH] MIPS: zboot: put appended dtb into a section + +This will make a separated section for dtb appear in ELF, and we can +then use objcopy to patch a dtb into vmlinuz when RAW_APPENDED_DTB +is set in kernel config. + +command to patch a dtb: +objcopy --set-section-flags=.appended_dtb=alloc,contents \ + --update-section=.appended_dtb=<target>.dtb vmlinuz vmlinuz-dtb + +Signed-off-by: Chuanhong Guo <gch981213@gmail.com> +--- + arch/mips/boot/compressed/ld.script | 9 ++++++--- + 1 file changed, 6 insertions(+), 3 deletions(-) + +--- a/arch/mips/boot/compressed/ld.script ++++ b/arch/mips/boot/compressed/ld.script +@@ -31,9 +31,12 @@ SECTIONS + CONSTRUCTORS + . = ALIGN(16); + } +- __appended_dtb = .; +- /* leave space for appended DTB */ +- . += 0x100000; ++ ++ .appended_dtb : { ++ __appended_dtb = .; ++ /* leave space for appended DTB */ ++ . += 0x100000; ++ } + + _edata = .; + /* End of data section */ |