This patch adds support for Huawei HG2821T-U, EPON ONU and home router,
often comes with ISP service.
Specifications
==============
* SoC: Econet EN7526GT
* RAM: 512MiB DDR3L (MT41K256M16TW-107)
* Flash: 256MiB SPI NAND (TC58CVG1S3HRAIG)
* WiFi 2.4GHz: MT7592N
* WiFi 5GHz: MT7612EN
* Ethernet: builtin switch
* LED: Power, Internet, WiFi, USB
* Buttons: Reset
* UART: Serial console (115200 8n1)
* USB: 1 x USB2
* Other: Phone jack, XPON fiber port
!!! BACKUP YOUR ROM !!!
=======================
Please always have your FULL flash image backup before flashing
anything. The vendor firmware varies a lot depending on your ISP and
location. You will have a hard time finding the right regional firmware
if you don't have a backup.
Notes
=====
* Due to the target `econet` being incomplete, WiFi, DSA switch, and
many other features are not supported yet. Do not flash the image unless
you know the consquences or `econet` is declared stable.
* This device, and apparently many other devices of this platform, use
a dual-image layout. OpenWRT (with `econet` target) only uses slot A.
Slot B is not used by OpenWRT, and is applicable for dual-booting to
vendor firmware.
* If you do not use vendor firmware anymore, you can erase and reuse
anything after `configuration_b`, which gives you ~110 MiB free space.
Again, backup your flash first.
Installation
============
Within shell
------------
Note that acquiring the shell access to the vendor firmware can be a bit
tricky depending on the firmware variation. If you can't play with the
vendor firmware, boot to OpenWrt using debricking method below.
0. (Optional) Back up your flash, and / or move the vendor firmware to
slot B
1. Build and then locate the `kernel.bin` and `rootfs.bin` image files
2. Upload `kernel.bin` and `rootfs.bin` to the device (via HTTP or USB
stick), then type:
```
mtd write -f -e KernelA kernel.bin KernelA
mtd erase RootfsA
mtd write -f -r -e AppA rootfs.bin AppA
```
From bootloader
---------------
1. Build and then locate the `kernel.bin` and `rootfs.bin` image files
2. Switch device on and press a key within 3 seconds
3. Upload `kernel.bin` via TFTP as described below
4. Once the transfer has completed successfully, bootloader will give
you the file length in "Total %d (0x%X) bytes received", then type
`flash 200000
80020000 <file length hex>`
5. Upload `rootfs.bin` then flash with
`flash 600000
80020000 <file length hex>`
6. Restart the device to boot into OpenWRT
> [!IMPORTANT]
> Do not try `httpd` in the bootloader. It writes to the wrong address
and will corrupt the flash.
Debricking
==========
1. Build and then locate the `initramfs-kernel.bin` image files
2. Switch device on and press a key within 3 seconds
3. Connect to device via ethernet, set the IP address to `192.168.1.X`,
then upload the image via TFTP
`tftp 192.168.1.1 -m binary -v -c put initramfs-kernel.bin`
The file name can be anything except `tcboot.bin` or `tclinux.bin`,
they will corrupt the flash.
4. Type `jump
80020000` to boot the kernel from memory
Dual boot
=========
Use `en75_chboot` tool to switch between vendor firmware and OpenWrt. If
you are soft-locked, you can also switch the flag in the bootloader:
1. Switch device on and press a key within 3 seconds
2. Select the kernel that you wish to use:
- `memwl
80020000 30ffffff` for `KernelA` (OpenWrt)
- `memwl
80020000 31ffffff` for `KernelB` (Factory)
3. Select the rootfs, which should be the same as the kernel:
- `memwl
80020004 30ffffff` for `RootfsA` (OpenWrt)
- `memwl
80020004 31ffffff` for `RootfsB` (Factory)
3. Commit the data to flash: `flash 1e0000
80020000 8`
4. Restart the device to boot into the selected OS
MAC addresses
=============
`//configuration_a/factory.conf` contains MAC addresses, along with
other pre-configured settings. OpenWrt uses `brmac`, `internetmac`,
`APMAC`, and `APMAC_5G`, while `tr069mac`, `voipmac`, `priprotocolmac`,
and `PONMac` are not used for now.
Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/23131
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
--- /dev/null
+. /lib/functions/system.sh
+. /lib/functions/uci-defaults.sh
+
+econet_setup_interfaces()
+{
+ local board="$1"
+
+ case "$board" in
+ *)
+ # econet lacks DSA support now
+ ucidef_set_interface_lan "eth0"
+ ;;
+ esac
+}
+
+econet_setup_macs()
+{
+ local board="$1"
+ local lan_mac=""
+ local wan_mac=""
+ local label_mac=""
+
+ case "$board" in
+ huawei,hg2821t-u)
+ local conffile="/tmp/configuration_a/factory.conf"
+ lan_mac=$(get_mac_ascii "$conffile" brmac)
+ wan_mac=$(get_mac_ascii "$conffile" internetmac)
+ label_mac=$wan_mac
+ ;;
+ esac
+
+ [ -n "$lan_mac" ] && ucidef_set_interface_macaddr "lan" "$lan_mac"
+ [ -n "$wan_mac" ] && ucidef_set_interface_macaddr "wan" "$wan_mac"
+ [ -n "$label_mac" ] && ucidef_set_label_macaddr "$label_mac"
+}
+
+board_config_update
+board=$(board_name)
+econet_setup_interfaces $board
+econet_setup_macs $board
+board_config_flush
+
+exit 0
--- /dev/null
+[ "$ACTION" = "add" ] || exit 0
+
+PHYNBR=${DEVPATH##*/phy}
+
+[ -n "$PHYNBR" ] || exit 0
+
+. /lib/functions/system.sh
+
+board=$(board_name)
+
+case "$board" in
+huawei,hg2821t-u)
+ conffile="/tmp/configuration_a/factory.conf"
+ [ "$PHYNBR" -eq 0 ] && get_mac_ascii "$conffile" APMAC_5G > /sys${DEVPATH}/macaddress
+ [ "$PHYNBR" -eq 1 ] && get_mac_ascii "$conffile" APMAC > /sys${DEVPATH}/macaddress
+ ;;
+esac
--- /dev/null
+preinit_mount_factory_data() {
+ local mtd_path=$(find_mtd_part "$1")
+
+ [ -n "$mtd_path" ] || return
+
+ mkdir -p "/tmp/$1"
+ mount -o ro,noatime -t jffs2 "$mtd_path" "/tmp/$1"
+}
+
+preinit_mount_factory_partitions() {
+ case $(board_name) in
+ huawei,hg2821t-u)
+ preinit_mount_factory_data configuration_a
+ ;;
+ esac
+}
+
+boot_hook_add preinit_main preinit_mount_factory_partitions
code_openwrt=0000000101000002
code_factory=0000000101010003
;;
+ huawei,hg2821t-u)
+ part=$(part_named '"flag"')
+ offset_blocks=14
+ block_size=$((1024 * 128))
+ code_offset=0
+ code_openwrt=30ffffff30ffffff
+ code_factory=31ffffff31ffffff
+ ;;
nokia,g240g-e)
part=$(part_named '"flag"')
offset_blocks=0
--- /dev/null
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/dts-v1/;
+
+#include "en751221.dtsi"
+
+/ {
+ model = "Huawei HG2821T-U";
+ compatible = "huawei,hg2821t-u", "econet,en751221";
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x1c000000>;
+ };
+
+ chosen {
+ stdout-path = "/serial@1fbf0000:115200";
+ bootargs = "ubi.mtd=rootfs_a";
+ };
+};
+
+&nand {
+ status = "okay";
+ econet,bmt;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "bootloader";
+ reg = <0x0 0x20000>;
+ read-only;
+ };
+
+ partition@20000 {
+ label = "flag";
+ reg = <0x20000 0x1e0000>;
+ econet,enable-remap;
+ };
+
+ partition@200000 {
+ label = "kernel_a";
+ reg = <0x200000 0x400000>;
+ econet,enable-remap;
+ };
+
+ partition@600000 {
+ label = "rootfs_a";
+ reg = <0x600000 0x3800000>;
+ econet,boot-flag-value = <0>;
+ };
+
+ partition@3e00000 {
+ label = "kernel_b";
+ reg = <0x3e00000 0x400000>;
+ econet,enable-remap;
+ };
+
+ partition@4200000 {
+ label = "rootfs_b";
+ reg = <0x4200000 0x3800000>;
+ econet,boot-flag-value = <1>;
+ };
+
+ partition@7a00000 {
+ label = "configuration_a";
+ reg = <0x7a00000 0x200000>;
+ read-only;
+ };
+
+ partition@7c00000 {
+ label = "configuration_b";
+ reg = <0x7c00000 0xa00000>;
+ econet,enable-remap;
+ };
+
+ partition@8600000 {
+ label = "userlocalct";
+ reg = <0x8600000 0x400000>;
+ econet,enable-remap;
+ };
+
+ partition@8a00000 {
+ label = "userdata";
+ reg = <0x8a00000 0x600000>;
+ econet,enable-remap;
+ };
+
+ partition@9000000 {
+ label = "framework1";
+ reg = <0x9000000 0x800000>;
+ econet,enable-remap;
+ };
+
+ partition@9800000 {
+ label = "framework2";
+ reg = <0x9800000 0x800000>;
+ econet,enable-remap;
+ };
+
+ /* UBI */
+ partition@a000000 {
+ label = "apps";
+ reg = <0xa000000 0x4a00000>;
+ };
+
+ partition@ea00000 {
+ label = "reservearea";
+ reg = <0xea00000 0x100000>;
+ econet,enable-remap;
+ };
+ };
+};
+
+&gmac0 {
+ status = "okay";
+};
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_MIPS_CPU=y
CONFIG_IRQ_WORK=y
-# CONFIG_JFFS2_FS is not set
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_ZLIB=y
CONFIG_LIBFDT=y
CONFIG_LOCK_DEBUGGING_SUPPORT=y
CONFIG_LZO_COMPRESS=y
mv $@.new $@
endef
+# If TCSUPPORT_FREE_BOOTBASE is enabled, bootloader will decompress the kernel
+# at 0x80002000 instead of 0x80020000.
+#
+# You can tell it by looking at the bootloader version string
+# " at %s version %s free bootbase".
+define Build/tclinux-free-bootbase-jump
+ @[ "$(KERNEL_LOADADDR)" = 0x80020000 ] || { \
+ $(call ERROR_MESSAGE,WARNING: KERNEL_LOADADDR changed); \
+ rm -f $@; \
+ }
+ printf '\010\000\200\000' > $@.new
+ dd if=/dev/zero bs=122876 count=1 >> $@.new
+ cat $@ >> $@.new
+ mv $@.new $@
+endef
+
# tclinux bootloader requires LZMA, BUT only provides 7.5MB of space
# to decompress into. So we use vmlinuz and decompress twice.
define Device/Default
DEVICE_DTS_DIR := ../dts
+ BLOCKSIZE := 128k
+ PAGESIZE := 2048
+ # decompression buffer limit, the size of LZMA-compressed data is read from
+ # the trx header
KERNEL_SIZE := 7480k
KERNEL_NAME := vmlinuz.bin
KERNEL_LOADADDR := 0x80020000
KERNEL := kernel-bin | append-dtb
+ UBINIZE_OPTS := -E 5
endef
include $(SUBTARGET).mk
endef
TARGET_DEVICES += en751221_generic
+define Device/huawei_hg2821t-u
+ DEVICE_VENDOR := Huawei
+ DEVICE_MODEL := HG2821T-U
+ DEVICE_DTS := en751221_huawei_hg2821t-u
+ KERNEL_DECOMPRESSED_SIZE := 7672k
+ KERNEL_SIZE := 4096k
+ IMAGE_SIZE := 57344k
+ FACTORY_SIZE := 40960k
+ NAND_SIZE := 256m
+ KERNEL := kernel-bin | append-dtb | tclinux-free-bootbase-jump | \
+ check-size $$(KERNEL_DECOMPRESSED_SIZE) | lzma
+ KERNEL_INITRAMFS := kernel-bin | append-dtb
+ IMAGES := kernel.bin rootfs.bin sysupgrade.bin
+ IMAGE/kernel.bin := append-kernel
+ IMAGE/rootfs.bin := append-ubi | check-size $$(FACTORY_SIZE)
+ IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+ DEVICE_PACKAGES := kmod-usb3
+endef
+TARGET_DEVICES += huawei_hg2821t-u
+
define Device/nokia_g240g-e
DEVICE_VENDOR := Nokia
DEVICE_MODEL := G-240G-E
projects / thirdparty / openwrt.git / commitdiff
