X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fdedeckeh.git;a=blobdiff_plain;f=target%2Flinux%2Fgeneric%2Fbackport-5.10%2F311-v5.11-MIPS-zboot-put-appended-dtb-into-a-section.patch;fp=target%2Flinux%2Fgeneric%2Fbackport-5.10%2F311-v5.11-MIPS-zboot-put-appended-dtb-into-a-section.patch;h=3f8808f702454445fc6e0fd3f128c80e346fbbf9;hp=0000000000000000000000000000000000000000;hb=e7249669d2af8f588a4e3beec589c4cbe5bd2fec;hpb=e57e460dc75836d3227e7370b9e64a0eabc9d91d

diff --git a/target/linux/generic/backport-5.10/311-v5.11-MIPS-zboot-put-appended-dtb-into-a-section.patch b/target/linux/generic/backport-5.10/311-v5.11-MIPS-zboot-put-appended-dtb-into-a-section.patch
new file mode 100644
index 0000000000..3f8808f702
--- /dev/null
+++ b/target/linux/generic/backport-5.10/311-v5.11-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 */