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18bea173a6
openwrt/target/linux/mediatek/image/filogic.mk
Chen Minqiang 18bea173a6 mediatek: add alternative stock layout for Xiaomi Redmi Router AX6000 
In this implementation, the flash partition layout is adjusted to avoid
modifying the uboot environment of mtdparts. This ensures that the 30M
ubi_kernel partition remains aligned with the stock ubi partition, and
the kernel volume is placed in it. This allows the stock uboot to boot
from it without changing the mtdparts, which is useful for reverting back
to the stock firmware using Xiaomi Firmware Tools. In actual testing,
modifying mtdparts has been found to break Xiaomi Firmware Tools.

1. use ARTIFACTS to generate initramfs-factory.ubi for easy installation.
2. The NAND flash layout is changed to allow for reverting back to the
   stock firmware.
3. Before performing sysupgrade, do some cleanup in platform_pre_upgrade
   to ensure a clean installation of OpenWRT.
4. Setup the uboot env to ensure that the system always boot, which can
   be helpful for users who may forget to do this before sysupgrade in
   the initramfs.

New flash instructions:
1. Gain ssh access. Please refer to:
   https://openwrt.org/toh/xiaomi/redmi_ax6000#installation)

2. Check which system current u-boot is loading from:
   COMMAND: `cat /proc/cmdline`
   sample OUTPUT: `console=ttyS0,115200n1 loglevel=8 firmware=1 uart_en=1`
   if firmware=1, current system is ubi1
   if firmware=0, current system is ubi0

3. Setup nvram and write the firmware:
   If the current system is ubi1, please set it up so that the next time
   it will boot from ubi, and write the firmware to ubi:
```
nvram set boot_wait=on
nvram set uart_en=1
nvram set flag_boot_rootfs=0
nvram set flag_last_success=0
nvram set flag_boot_success=1
nvram set flag_try_sys1_failed=0
nvram set flag_try_sys2_failed=0
nvram commit
ubiformat /dev/mtd8 -y -f /tmp/initramfs-factory.ubi
```
   If the current system is ubi, please set it up so that the next time
   it will boot from ubi1, and write the firmware to ubi1:
```
nvram set boot_wait=on
nvram set uart_en=1
nvram set flag_boot_rootfs=1
nvram set flag_last_success=1
nvram set flag_boot_success=1
nvram set flag_try_sys1_failed=0
nvram set flag_try_sys2_failed=0
nvram commit
ubiformat /dev/mtd9 -y -f /tmp/initramfs-factory.ubi
```

4. After rebooting, the system should now boot into the openwrt initramfs.
   Flash the squashfs-sysupgrade.bin via using ssh or luci.
```
sysupgrade -n /tmp/squashfs-sysupgrade.bin
```
Done.

For existing users of the Redmi AX6000 running OpenWrt, here are the steps to
switch to this new layout:

1. Flash initramfs-factory.ubi
```
mtd -r -e ubi write /tmp/initramfs-factory.ubi ubi
```

2. After rebooting, the system will boot into the new openwrt-initramfs.
Log in and perform a sysupgrade to complete the process.
```
sysupgrade -n /tmp/squashfs-sysupgrade.bin
```

Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
2022-12-17 15:04:16 +08:00

160 lines
5.5 KiB
Makefile
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DTS_DIR := $(DTS_DIR)/mediatek
KERNEL_LOADADDR := 0x44000000
define Image/Prepare
# For UBI we want only one extra block
rm -f $(KDIR)/ubi_mark
echo -ne '\xde\xad\xc0\xde' > $(KDIR)/ubi_mark
endef
define Build/bl2
cat $(STAGING_DIR_IMAGE)/mt7986-$1-bl2.img >> $@
endef
define Build/bl31-uboot
cat $(STAGING_DIR_IMAGE)/mt7986_$1-u-boot.fip >> $@
endef
define Build/mt7986-gpt
cp $@ $@.tmp 2>/dev/null || true
ptgen -g -o $@.tmp -a 1 -l 1024 \
$(if $(findstring sdmmc,$1), \
-H \
-t 0x83 -N bl2 -r -p 4079k@17k \
) \
-t 0x83 -N ubootenv -r -p 512k@4M \
-t 0x83 -N factory -r -p 2M@4608k \
-t 0xef -N fip -r -p 4M@6656k \
-N recovery -r -p 32M@12M \
$(if $(findstring sdmmc,$1), \
-N install -r -p 20M@44M \
-t 0x2e -N production -p $(CONFIG_TARGET_ROOTFS_PARTSIZE)M@64M \
) \
$(if $(findstring emmc,$1), \
-t 0x2e -N production -p $(CONFIG_TARGET_ROOTFS_PARTSIZE)M@64M \
)
cat $@.tmp >> $@
rm $@.tmp
endef
define Device/bananapi_bpi-r3
DEVICE_VENDOR := Bananapi
DEVICE_MODEL := BPi-R3
DEVICE_DTS := mt7986a-bananapi-bpi-r3
DEVICE_DTS_CONFIG := config-mt7986a-bananapi-bpi-r3
DEVICE_DTS_OVERLAY:= mt7986a-bananapi-bpi-r3-nor mt7986a-bananapi-bpi-r3-emmc-nor mt7986a-bananapi-bpi-r3-emmc-snand mt7986a-bananapi-bpi-r3-snand
DEVICE_DTS_DIR := ../dts
DEVICE_PACKAGES := kmod-hwmon-pwmfan kmod-i2c-gpio kmod-sfp kmod-usb3 e2fsprogs f2fsck mkf2fs
IMAGES := sysupgrade.itb
KERNEL_INITRAMFS_SUFFIX := -recovery.itb
ARTIFACTS := \
emmc-preloader.bin emmc-bl31-uboot.fip \
nor-preloader.bin nor-bl31-uboot.fip \
sdcard.img.gz \
snand-preloader.bin snand-bl31-uboot.fip
ARTIFACT/emmc-preloader.bin := bl2 emmc-ddr4
ARTIFACT/emmc-bl31-uboot.fip := bl31-uboot bananapi_bpi-r3-emmc
ARTIFACT/nor-preloader.bin := bl2 nor-ddr4
ARTIFACT/nor-bl31-uboot.fip := bl31-uboot bananapi_bpi-r3-nor
ARTIFACT/snand-preloader.bin := bl2 spim-nand-ddr4
ARTIFACT/snand-bl31-uboot.fip := bl31-uboot bananapi_bpi-r3-snand
ARTIFACT/sdcard.img.gz := mt7986-gpt sdmmc |\
pad-to 17k | bl2 sdmmc-ddr4 |\
pad-to 6656k | bl31-uboot bananapi_bpi-r3-sdmmc |\
$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),\
pad-to 12M | append-image-stage initramfs-recovery.itb | check-size 44m |\
) \
pad-to 44M | bl2 spim-nand-ddr4 |\
pad-to 45M | bl31-uboot bananapi_bpi-r3-snand |\
pad-to 49M | bl2 nor-ddr4 |\
pad-to 50M | bl31-uboot bananapi_bpi-r3-nor |\
pad-to 51M | bl2 emmc-ddr4 |\
pad-to 52M | bl31-uboot bananapi_bpi-r3-emmc |\
pad-to 56M | mt7986-gpt emmc |\
$(if $(CONFIG_TARGET_ROOTFS_SQUASHFS),\
pad-to 64M | append-image squashfs-sysupgrade.itb | check-size | gzip \
)
IMAGE_SIZE := $$(shell expr 64 + $$(CONFIG_TARGET_ROOTFS_PARTSIZE))m
KERNEL := kernel-bin | gzip
KERNEL_INITRAMFS := kernel-bin | lzma | \
fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd | pad-to 64k
IMAGE/sysupgrade.itb := append-kernel | fit gzip $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb external-static-with-rootfs | pad-rootfs | append-metadata
DTC_FLAGS += -@ --space 32768
endef
TARGET_DEVICES += bananapi_bpi-r3
define Device/mediatek_mt7986a-rfb-nand
DEVICE_VENDOR := MediaTek
DEVICE_MODEL := MT7986 rfba AP (NAND)
DEVICE_DTS := mt7986a-rfb-spim-nand
DEVICE_DTS_DIR := $(DTS_DIR)/
KERNEL_LOADADDR := 0x48000000
SUPPORTED_DEVICES := mediatek,mt7986a-rfb-snand
UBINIZE_OPTS := -E 5
BLOCKSIZE := 128k
PAGESIZE := 2048
IMAGE_SIZE := 65536k
KERNEL_IN_UBI := 1
IMAGES += factory.bin
IMAGE/factory.bin := append-ubi | check-size $$$$(IMAGE_SIZE)
IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
KERNEL = kernel-bin | lzma | \
fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb
KERNEL_INITRAMFS = kernel-bin | lzma | \
fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd
DTC_FLAGS += -@ --space 32768
endef
TARGET_DEVICES += mediatek_mt7986a-rfb-nand
define Device/mediatek_mt7986b-rfb
DEVICE_VENDOR := MediaTek
DEVICE_MODEL := MTK7986 rfbb AP
DEVICE_DTS := mt7986b-rfb
DEVICE_DTS_DIR := $(DTS_DIR)/
KERNEL_LOADADDR := 0x48000000
SUPPORTED_DEVICES := mediatek,mt7986b-rfb
UBINIZE_OPTS := -E 5
BLOCKSIZE := 128k
PAGESIZE := 2048
IMAGE_SIZE := 65536k
KERNEL_IN_UBI := 1
IMAGES += factory.bin
IMAGE/factory.bin := append-ubi | check-size $$$$(IMAGE_SIZE)
IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
endef
TARGET_DEVICES += mediatek_mt7986b-rfb
define Device/xiaomi_redmi-router-ax6000
DEVICE_VENDOR := Xiaomi
DEVICE_MODEL := Redmi Router AX6000
DEVICE_DTS := mt7986a-xiaomi-redmi-router-ax6000
DEVICE_DTS_DIR := ../dts
DEVICE_PACKAGES := kmod-leds-ws2812b
KERNEL_LOADADDR := 0x48000000
UBINIZE_OPTS := -E 5
BLOCKSIZE := 128k
PAGESIZE := 2048
KERNEL_IN_UBI := 1
IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
endef
TARGET_DEVICES += xiaomi_redmi-router-ax6000
define Device/xiaomi_redmi-router-ax6000-stock
DEVICE_VENDOR := Xiaomi
DEVICE_MODEL := Redmi Router AX6000 (stock layout)
DEVICE_DTS := mt7986a-xiaomi-redmi-router-ax6000-stock
DEVICE_DTS_DIR := ../dts
DEVICE_PACKAGES := kmod-leds-ws2812b
KERNEL_LOADADDR := 0x48000000
UBINIZE_OPTS := -E 5
BLOCKSIZE := 128k
PAGESIZE := 2048
ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),)
ARTIFACTS := initramfs-factory.ubi
ARTIFACT/initramfs-factory.ubi := append-image-stage initramfs-kernel.bin | ubinize-kernel
endif
IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
endef
TARGET_DEVICES += xiaomi_redmi-router-ax6000-stock
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