From 8f27ac5ec066e6cc85013eb49150aa5d7144de33 Mon Sep 17 00:00:00 2001 From: Robert Marko Date: Mon, 13 Sep 2021 14:08:35 +0200 Subject: ipq40xx: 5.10: copy patches Copy over the 5.4 kernel patches to 5.10 folder. Signed-off-by: Robert Marko --- ...1-arm-compressed-add-appended-DTB-section.patch | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 target/linux/ipq40xx/patches-5.10/301-arm-compressed-add-appended-DTB-section.patch (limited to 'target/linux/ipq40xx/patches-5.10/301-arm-compressed-add-appended-DTB-section.patch') diff --git a/target/linux/ipq40xx/patches-5.10/301-arm-compressed-add-appended-DTB-section.patch b/target/linux/ipq40xx/patches-5.10/301-arm-compressed-add-appended-DTB-section.patch new file mode 100644 index 0000000000..7e6184fc73 --- /dev/null +++ b/target/linux/ipq40xx/patches-5.10/301-arm-compressed-add-appended-DTB-section.patch @@ -0,0 +1,48 @@ +From 0843a61d6913bdac8889eb048ed89f7903059787 Mon Sep 17 00:00:00 2001 +From: Robert Marko +Date: Fri, 30 Oct 2020 13:36:31 +0100 +Subject: [PATCH] arm: compressed: add appended DTB section + +This adds a appended_dtb section to the ARM decompressor +linker script. + +This allows using the existing ARM zImage appended DTB support for +appending a DTB to the raw ELF kernel. + +Its size is set to 1MB max to match the zImage appended DTB size limit. + +To use it to pass the DTB to the kernel, objcopy is used: + +objcopy --set-section-flags=.appended_dtb=alloc,contents \ + --update-section=.appended_dtb=.dtb vmlinux + +This is based off the following patch: +https://github.com/openwrt/openwrt/commit/c063e27e02a9dcac0e7f5877fb154e58fa3e1a69 + +Signed-off-by: Robert Marko +--- + arch/arm/boot/compressed/vmlinux.lds.S | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +--- a/arch/arm/boot/compressed/vmlinux.lds.S ++++ b/arch/arm/boot/compressed/vmlinux.lds.S +@@ -93,6 +93,13 @@ SECTIONS + + _edata = .; + ++ .appended_dtb : { ++ /* leave space for appended DTB */ ++ . += 0x100000; ++ } ++ ++ _edata_dtb = .; ++ + /* + * The image_end section appears after any additional loadable sections + * that the linker may decide to insert in the binary image. Having +@@ -132,4 +139,4 @@ SECTIONS + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + } +-ASSERT(_edata_real == _edata, "error: zImage file size is incorrect"); ++ASSERT(_edata_real == _edata_dtb, "error: zImage file size is incorrect"); -- cgit v1.2.3