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| author | John Thomson <git@johnthomson.fastmail.com.au> | 2020-10-15 19:06:41 +1000 |
|---|---|---|
| committer | Chuanhong Guo <gch981213@gmail.com> | 2020-10-29 21:35:03 +0800 |
| commit | 9a168b51c3a60c95ccd349dd3010615ba6b0e033 (patch) | |
| tree | 923183433924f4998c1d6ed9c58740ab87f1637d | |
| parent | c063e27e02a9dcac0e7f5877fb154e58fa3e1a69 (diff) | |
| download | upstream-9a168b51c3a60c95ccd349dd3010615ba6b0e033.tar.gz upstream-9a168b51c3a60c95ccd349dd3010615ba6b0e033.tar.bz2 upstream-9a168b51c3a60c95ccd349dd3010615ba6b0e033.zip | |
build: image: add append-dtb-elf helper
The mips kernel vmlinux image supports adding an empty ELF section
for DTB to be later inserted into with MIPS_ELF_APPENDED_DTB.
This ELF + inserted DTB image can then be directly booted on some
devices.
Example usage:
image/subtarget.mk:
KERNEL_NAME := vmlinux.elf
KERNEL_INITRAMFS_NAME := vmlinux-initramfs.elf
KERNEL := kernel-bin | append-dtb-elf
On mt7621 memory size needed to be manually specified.
Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au>
| -rw-r--r-- | include/image-commands.mk | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/image-commands.mk b/include/image-commands.mk index 740d627fc7..ea94059d20 100644 --- a/include/image-commands.mk +++ b/include/image-commands.mk @@ -142,6 +142,13 @@ define Build/append-dtb cat $(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb >> $@ endef +define Build/append-dtb-elf + $(TARGET_CROSS)objcopy \ + --set-section-flags=.appended_dtb=alloc,contents \ + --update-section \ + .appended_dtb=$(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb $@ +endef + define Build/install-dtb $(call locked, \ $(foreach dts,$(DEVICE_DTS), \ |