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malta: convert to Device macro image building

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Convert the malta target from the legacy Image/BuildKernel and
Image/Build pattern to the modern Device macro system. This is the
last target still using the legacy pattern.

The Device macro system automatically generates per-image JSON
metadata files which get aggregated into profiles.json, enabling
firmware selector and other tooling support for all malta subtargets
(be, le, be64, le64).

The kernel ELF is produced via KERNEL_NAME := vmlinux.elf (matching
octeon), uImage artifacts are built using the standard Build/lzma,
Build/gzip and Build/uImage commands with the existing load address
0x80100000, and rootfs images use append-rootfs with optional gzip
compression.

The device is named 'generic' following the convention used by other
virtual/emulated targets (x86, armsr, octeon).

Signed-off-by: Paul Spooren <mail@aparcar.org>
This commit is contained in:
Paul Spooren 2026-02-08 19:50:34 +01:00
parent 316492b809
commit 8dfa38b82c
1 changed files with 20 additions and 40 deletions
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60
target/linux/malta/image/Makefile
View file

@ -5,48 +5,28 @@
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
define CompressLzma
$(STAGING_DIR_HOST)/bin/lzma e $(1) -lc1 -lp2 -pb2 $(2)
KERNEL_LOADADDR := 0x80100000
define Device/Default
PROFILES := Default
KERNEL_NAME := vmlinux.elf
KERNEL_INITRAMFS_NAME := vmlinux-initramfs.elf
KERNEL := kernel-bin
KERNEL_INSTALL := 1
FILESYSTEMS := ext4 squashfs
IMAGES := rootfs.img rootfs.img.gz
IMAGE/rootfs.img := append-rootfs | pad-to $(ROOTFS_PARTSIZE)
IMAGE/rootfs.img.gz := append-rootfs | pad-to $(ROOTFS_PARTSIZE) | gzip
ARTIFACTS := uImage-lzma uImage-gzip
ARTIFACT/uImage-lzma := kernel-bin | lzma | uImage lzma
ARTIFACT/uImage-gzip := kernel-bin | gzip | uImage gzip
SUPPORTED_DEVICES :=
endef
define CompressGzip
gzip -9n -c $(1) > $(2)
endef
define MkuImage
mkimage -A mips -O linux -T kernel -a 0x80100000 -C $(1) $(2) \
-e 0x80100000 -n 'MIPS OpenWrt Linux-$(LINUX_VERSION)' \
-d $(3) $(4)
endef
define Image/Prepare
$(call CompressLzma,$(KDIR)/vmlinux,$(KDIR)/vmlinux.bin.lzma)
$(call MkuImage,lzma,,$(KDIR)/vmlinux.bin.lzma,$(KDIR)/uImage.lzma)
$(call CompressGzip,$(KDIR)/vmlinux,$(KDIR)/vmlinux.bin.gz)
$(call MkuImage,gzip,,$(KDIR)/vmlinux.bin.gz,$(KDIR)/uImage.gz)
endef
define Image/BuildKernel
cp $(KDIR)/vmlinux.elf $(BIN_DIR)/$(IMG_PREFIX)-vmlinux.elf
cp $(KDIR)/uImage.lzma $(BIN_DIR)/$(IMG_PREFIX)-uImage-lzma
cp $(KDIR)/uImage.gz $(BIN_DIR)/$(IMG_PREFIX)-uImage-gzip
endef
define Image/Build/Initramfs
cp $(KDIR)/vmlinux-initramfs.elf $(BIN_DIR)/$(IMG_PREFIX)-vmlinux-initramfs.elf
cp $(KDIR)/vmlinux-initramfs $(BIN_DIR)/$(IMG_PREFIX)-vmlinux-initramfs.bin
endef
define Image/Build/gzip
gzip -f9n $(BIN_DIR)/$(IMG_ROOTFS)-$(1).img
endef
$(eval $(call Image/gzip-ext4-padded-squashfs))
define Image/Build
$(call Image/Build/$(1))
$(CP) $(KDIR)/root.$(1) $(BIN_DIR)/$(IMG_ROOTFS)-$(1).img
$(call Image/Build/gzip/$(1))
define Device/generic
DEVICE_VENDOR := MIPS
DEVICE_MODEL := Malta CoreLV board (QEMU)
endef
TARGET_DEVICES += generic
$(eval $(call BuildImage))