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authorChuanhong Guo <gch981213@gmail.com>2020-10-29 21:22:57 +0800
committerChuanhong Guo <gch981213@gmail.com>2020-10-29 21:34:56 +0800
commitc063e27e02a9dcac0e7f5877fb154e58fa3e1a69 (patch)
tree04a24e67d6f46959e90af281496773c7baabcefc /target/linux
parent42af05ca1fa23bb65b0961201dabb72806172ca5 (diff)
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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>
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/generic/pending-5.4/311-MIPS-zboot-put-appended-dtb-into-a-section.patch36
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 */