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openwrtv4/target/linux/apm821xx/image/Makefile
Christian Lamparter e2b35f91b3 apm821xx: switch MR24's initramfs to multi-image method 
The recent change to switch to gcc 7.3 broke the image
generation code, as the kernel would no longer fit into
KERNEL_SIZE.

This patch fixes the issue by reworking the initramfs
creation and packaging, which will get rid of the
KERNEL_SIZE check in the process.

This new initramfs can be loaded through the MR24 U-boot
in the following way:

=> setenv ipaddr 192.168.1.1
=> setenv bootargs console=ttyS0,$baudrate
=> tftpboot c00000 192.168.1.2:meraki_mr24-initramfs-kernel.bin
[...]
Load address: 0xc00000
Loading: ################################################ [...]
done
    Bytes transferred = 5952544 (5ad420 hex)
    => bootm $fileaddr
    \## Booting kernel from Legacy Image at 00c00000 ...
    ...

For more information and the latest flashing guide:
please visit the OpenWrt Wiki Page for the MR24:
<https://openwrt.org/toh/meraki/mr24#flashing>

Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
2018-03-30 00:30:41 +02:00

246 lines
7.3 KiB
Makefile
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#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
DEVICE_VARS += IMAGE_SIZE DTB_SIZE
define Device/Default
PROFILES := Default
KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
DEVICE_DTS :=
KERNEL_ENTRY := 0x00000000
KERNEL_LOADADDR := 0x00000000
DEVICE_DTS_DIR := ../dts
SUPPORTED_DEVICES = $(subst _,$(comma),$(1))
endef
define Build/dtb
$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb,,--space $(DTB_SIZE))
endef
define Build/export-dtb
cp $(IMAGE_KERNEL).dtb $@
endef
ifeq ($(SUBTARGET),nand)
define Image/cpiogz
( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz )
endef
define Build/copy-file
cat "$(1)" > "$@"
endef
define Build/MerakiAdd-dtb
$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb)
( \
dd if=$@.dtb bs=$(DTB_SIZE) conv=sync; \
dd if=$@ bs=$(BLOCKSIZE) conv=sync; \
) > $@.new
@mv $@.new $@
endef
define Build/MerakiAdd-initramfs
$(call Image/cpiogz)
-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T ramdisk \
-C gzip -n "$(PROFILE) rootfs" \
-d $(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz \
$(KDIR_TMP)/$(IMG_PREFIX)-uramdisk.image.gz
( \
dd if=$@ bs=1k conv=sync; \
dd if=$(KDIR_TMP)/$(IMG_PREFIX)-uramdisk.image.gz bs=$(BLOCKSIZE) conv=sync; \
) > $@.new
@mv $@.new $@
endef
define Build/MerakiNAND
-$(STAGING_DIR_HOST)/bin/mkmerakifw \
-B $(BOARD_NAME) -s \
-i $@ \
-o $@.new
@cp $@.new $@
endef
define Device/meraki_mr24
DEVICE_TITLE := Cisco Meraki MR24
DEVICE_PACKAGES := kmod-spi-gpio
BOARD_NAME := mr24
DEVICE_DTS := meraki-mr24
BLOCKSIZE := 63k
IMAGES := sysupgrade.tar
DTB_SIZE := 64512
IMAGE_SIZE := 8191k
KERNEL := kernel-bin | lzma | uImage lzma | MerakiAdd-dtb | MerakiNAND
KERNEL_INITRAMFS := kernel-bin | lzma | dtb | MuImage-initramfs lzma
IMAGE/sysupgrade.tar := sysupgrade-tar | append-metadata
UBINIZE_OPTS := -E 5
SUPPORTED_DEVICES += mr24
endef
TARGET_DEVICES += meraki_mr24
define Device/meraki_mx60
DEVICE_TITLE := Cisco Meraki MX60/MX60W
DEVICE_PACKAGES := kmod-spi-gpio kmod-usb-ledtrig-usbport kmod-usb-dwc2 \
kmod-usb-storage block-mount
BOARD_NAME := mx60
DEVICE_DTS := meraki-mx60
BLOCKSIZE := 63k
IMAGES := sysupgrade.tar
DTB_SIZE := 64512
# The kernel size will need to match the offset defined in mkmerakifw.c,
# otherwise the final image will fail to boot. This is set within the
# MX60 kernel header definition which is found at
# ./tools/firmware-utils/src/mkmerakifw.c, line 103~
KERNEL_SIZE := 2984k
IMAGE_SIZE := 1021m
KERNEL := kernel-bin | gzip | uImage gzip | MerakiAdd-dtb | MerakiNAND
KERNEL_INITRAMFS := copy-file $(KDIR)/vmlinux | gzip | uImage gzip | \
check-size $$(KERNEL_SIZE) | \
MerakiAdd-dtb | pad-to 2047k | MerakiAdd-initramfs | \
MerakiNAND
IMAGE/sysupgrade.tar := sysupgrade-tar | append-metadata
UBINIZE_OPTS := -E 5
SUPPORTED_DEVICES += mx60
endef
TARGET_DEVICES += meraki_mx60
define Build/create-uImage-dtb
# flat_dt target expect FIT image - which WNDR4700's uboot doesn't support
-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) \
-O linux -T kernel -C none \
-n '$(call toupper,$(LINUX_KARCH)) $(VERSION_DIST) Linux-$(LINUX_VERSION)' \
-d $(IMAGE_KERNEL).dtb $@.new
@mv $@.new $@
endef
define Build/MuImage-initramfs
rm -rf $@.fakerd $@.new
dd if=/dev/zero of=$@.fakerd bs=32 count=1 conv=sync
# Netgear used an old uboot that doesn't have FIT support.
# So we are stuck with either a full ext2/4 fs in a initrd.
# ... or we try to make the "multi" image approach to work
# for us.
#
# Sadly, the "multi" image has to consists of three
# "fixed" parts in the following "fixed" order:
# 1. The kernel which is in $@
# 2. The (fake) initrd which is in $@.fakerd
# 3. The device tree binary which is in $@.dtb
#
# Now, given that we use the function for the kernel which
# already has a initramfs image inside, we still have to
# add a "fake" initrd (which a mkimage header) in the second
# part of the legacy multi image. Since we need to put the
# device tree stuff into part 3.
-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T multi \
-C $(1) -a $(KERNEL_LOADADDR) -e $(KERNEL_ENTRY) \
-n '$(BOARD_NAME) initramfs' -d $@:$@.fakerd:$@.dtb $@.new
mv $@.new $@
rm -rf $@.fakerd
endef
define Device/netgear_wndr4700
DEVICE_TITLE := Netgear Centria N900 WNDR4700/WNDR4720
DEVICE_PACKAGES := badblocks block-mount e2fsprogs \
kmod-dm kmod-fs-ext4 kmod-fs-vfat kmod-usb-ledtrig-usbport \
kmod-md-mod kmod-nls-cp437 kmod-nls-iso8859-1 kmod-nls-iso8859-15 \
kmod-nls-utf8 kmod-usb3 kmod-usb-dwc2 kmod-usb-storage \
partx-utils
BOARD_NAME := wndr4700
DEVICE_DTS := netgear-wndr4700
PAGESIZE := 2048
SUBPAGESIZE := 512
BLOCKSIZE := 128k
DTB_SIZE := 131008
IMAGE_SIZE := 24960k
IMAGES := factory.img sysupgrade.tar kernel.dtb
KERNEL_SIZE := 1920k
KERNEL := dtb | kernel-bin | lzma | uImage lzma | pad-offset $$(BLOCKSIZE) 64 | \
append-uImage-fakeroot-hdr
KERNEL_INITRAMFS := kernel-bin | gzip | dtb | MuImage-initramfs gzip
IMAGE/factory.img := create-uImage-dtb | append-kernel | pad-to 2M | append-ubi | \
netgear-dni | check-size $$$$(IMAGE_SIZE)
IMAGE/sysupgrade.tar := sysupgrade-tar | append-metadata
IMAGE/kernel.dtb := export-dtb | uImage none
NETGEAR_BOARD_ID := WNDR4700
NETGEAR_HW_ID := 29763875+128+256
UBINIZE_OPTS := -E 5
SUPPORTED_DEVICES += wndr4700
endef
TARGET_DEVICES += netgear_wndr4700
endif
ifeq ($(SUBTARGET),sata)
### Image scripts for the WD My Book Live Series ###
define Build/boot-script
$(STAGING_DIR_HOST)/bin/mkimage -A powerpc -T script -C none -n "$(PROFILE) Boot Script" \
-d mbl_boot.scr \
$@.scr
endef
define Build/boot-img
$(RM) -rf $@.bootdir
mkdir -p $@.bootdir/boot
$(CP) $@.scr $@.bootdir/boot/boot.scr
$(CP) $(IMAGE_KERNEL).dtb $@.bootdir/boot/$(DEVICE_DTB)
$(CP) $(IMAGE_KERNEL) $@.bootdir/boot/uImage
genext2fs --block-size $(BLOCKSIZE:%k=%Ki) --size-in-blocks $$((1024 * $(BOOT_SIZE))) --root $@.bootdir $@.boot
# convert it to revision 1 - needed for u-boot ext2load
$(STAGING_DIR_HOST)/bin/tune2fs -O filetype $@.boot
$(STAGING_DIR_HOST)/bin/e2fsck -pDf $@.boot > /dev/null
endef
define Build/hdd-img
./mbl_gen_hdd_img.sh $@ $@.boot $(IMAGE_ROOTFS)
endef
define Device/MyBookLiveDefault
IMAGE_SIZE := 48m
BLOCKSIZE := 1k
DTB_SIZE := 16384
KERNEL := kernel-bin | dtb | gzip | uImage gzip
KERNEL_INITRAMFS := kernel-bin | dtb | gzip | uImage gzip
BOOT_SIZE := 8
IMAGES := rootfs.img.gz kernel.dtb
DEVICE_DTB := apollo3g.dtb
FILESYSTEMS := ext4
IMAGE/kernel.dtb := export-dtb
IMAGE/rootfs.img.gz := boot-script | boot-img | hdd-img | gzip | append-metadata
endef
define Device/wd_mybooklive
$(Device/MyBookLiveDefault)
DEVICE_TITLE := Western Digital My Book Live
DEVICE_DTS := wd-mybooklive
SUPPORTED_DEVICES += mbl
endef
TARGET_DEVICES += wd_mybooklive
define Device/wd_mybooklive-duo
$(Device/MyBookLiveDefault)
DEVICE_TITLE := Western Digital My Book Live Duo
DEVICE_PACKAGES := kmod-usb-dwc2 kmod-usb-ledtrig-usbport kmod-usb-storage kmod-fs-vfat wpad-mini
DEVICE_DTS := wd-mybooklive-duo
SUPPORTED_DEVICES += mbl
endef
TARGET_DEVICES += wd_mybooklive-duo
endif
$(eval $(call BuildImage))
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