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Martin Kennedy cfe79f2eb8 mpc85xx: Patch HiveAP 330 u-boot to fix boot 
When Kernel 5.10 was enabled for mpc85xx, the kernel once again became too
large upon decompression (>7MB or so) to decompress itself on boot (see
FS#4110[1]).

There have been many attempts to fix booting from a compressed kernel on
the HiveAP-330:

- b683f1c36d ("mpc85xx: Use gzip compressed kernel on HiveAP-330")
- 98089bb8ba ("mpc85xx: Use uncompressed kernel on the HiveAP-330")
- 26cb167a5c ("mpc85xx: Fix Aerohive HiveAP-330 initramfs image")

We can no longer compress the kernel due to size, and the stock bootloader
does not support any other types of compression. Since an uncompressed
kernel no longer fits in the 8MiB kernel partition at 0x2840000, we need to
patch u-boot to autoboot by running variable which isn't set by the
bootloader on each autoboot.

This commit repartitions the HiveAP, requiring a new COMPAT_VERSION,
and uses the DEVICE_COMPAT_MESSAGE to guide the user to patch u-boot,
which changes the variable run on boot to be `owrt_boot`; the user can
then set the value of that variable appropriately.

The following has been documented in the device's OpenWrt wiki page:
<https://openwrt.org/toh/aerohive/hiveap-330>. Please look there
first/too for more information.

The from-stock and upgrade from a previous installation now becomes:

0) setup a network with a dhcp server and a tftp server at serverip
(192.168.1.101) with the initramfs image in the servers root directory.

1) Hook into UART (9600 baud) and enter U-Boot. You may need to enter
a password of administrator or AhNf?d@ta06 if prompted. If the password
doesn't work. Try reseting the device by pressing and holding the reset
button with the stock OS.

2) Once in U-Boot, set the new owrt_boot and tftp+boot the initramfs image:
   Use copy and paste!

 # fw_setenv owrt_boot 'setenv bootargs \"console=ttyS0,$baudrate\";bootm 0xEC040000 - 0xEC000000'
 # save
 # dhcp
 # setenv bootargs console=ttyS0,$baudrate
 # tftpboot 0x1000000 192.168.1.101:openwrt-mpc85xx-p1020-aerohive_hiveap-330-initramfs-kernel.bin
 # bootm

3) Once openwrt booted:
carefully copy and paste this into the root shell. One step at a time

  # 3.0 install kmod-mtd-rw from the internet and load it

  opkg update; opkg install kmod-mtd-rw
  insmod mtd-rw i_want_a_brick=y

  # 3.1 create scripts that modifies uboot

cat <<- "EOF" > /tmp/uboot-update.sh
  . /lib/functions/system.sh
  cp "/dev/mtd$(find_mtd_index 'u-boot')" /tmp/uboot
  cp /tmp/uboot /tmp/uboot_patched
  ofs=$(strings -n80 -td < /tmp/uboot | grep '^ [0-9]* setenv bootargs.*cp\.l' | cut -f2 -d' ')
  for off in $ofs; do
    printf "run owrt_boot;            " | dd of=/tmp/uboot_patched bs=1 seek=${off} conv=notrunc
  done
  md5sum /tmp/uboot*
EOF

  # 3.2 run the script to do the modification

  sh /tmp/uboot-update.sh

  # verify that /tmp/uboot and /tmp/uboot_patched are good
  #
  # my uboot was: (is printed during boot)
  # U-Boot 2009.11 (Jan 12 2017 - 00:27:25), Build: jenkins-HiveOS-Honolulu_AP350_Rel-245
  #
  # d84b45a2e8aca60d630fbd422efc6b39  /tmp/uboot
  # 6dc420f24c2028b9cf7f0c62c0c7f692  /tmp/uboot_patched
  # 98ebc7e7480ce9148cd2799357a844b0  /tmp/uboot-update.sh <-- just for reference

  # 3.3 this produces the /tmp/u-boot_patched file.

  mtd write /tmp/uboot_patched u-boot

3) scp over the sysupgrade file to /tmp/ and run sysupgrade to flash OpenWrt:

  sysupgrade -n /tmp/openwrt-mpc85xx-p1020-aerohive_hiveap-330-squashfs-sysupgrade.bin

4) after the reboot, you are good to go.

Other notes:

- Note that after this sysupgrade, the AP will be unavailable for 7 minutes
  to reformat flash. The tri-color LED does not blink in any way to
  indicate this, though there is no risk in interrupting this process,
  other than the jffs2 reformat being reset.

- Add a uci-default to fix the compat version. This will prevent updates
  from previous versions without going through the installation process.

- Enable CONFIG_MTD_SPLIT_UIMAGE_FW and adjust partitioning to combine
  the kernel and rootfs into a single dts partition to maximize storage
  space, though in practice the kernel can grow no larger than 16MiB due
  to constraints of the older mpc85xx u-boot platform.

- Because of that limit, KERNEL_SIZE has been raised to 16m.

- A .tar.gz of the u-boot source for the AP330 (a.k.a. Goldengate) can
  be found here[2].

- The stock-jffs2 partition is also removed to make more space -- this
  is possible only now that it is no longer split away from the rootfs.

- the console-override is gone. The device will now get the console
  through the bootargs. This has the advantage that you can set a different
  baudrate in uboot and the linux kernel will stick with it!

- due to the repartitioning, the partition layout and names got a makeover.

- the initramfs+fdt method is now combined into a MultiImage initramfs.
  The separate fdt download is no longer needed.

- added uboot-envtools to the mpc85xx target. All targets have uboot and
  this way its available in the initramfs.

[1]: https://bugs.openwrt.org/index.php?do=details&task_id=4110
[2]: magnet:?xt=urn:btih:e53b27006979afb632af5935fa0f2affaa822a59

Tested-by: Martin Kennedy <hurricos@gmail.com>
Signed-off-by: Martin Kennedy <hurricos@gmail.com>
(rewrote parts of the commit message, Initramfs-MultiImage,
dropped bootargs-override, added wiki entry + link, uboot-envtools)
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2022-02-19 19:20:29 +01:00
.github meta: drop issue_template 2022-02-09 17:26:58 +01:00
config config: build: cleanup whitespace issue 2022-02-19 13:10:01 +01:00
include kernel: bump 5.10 to 5.10.100 2022-02-11 23:17:40 +01:00
LICENSES
package mpc85xx: Patch HiveAP 330 u-boot to fix boot 2022-02-19 19:20:29 +01:00
scripts build: scripts/config - update to kconfig-v5.14 2022-02-19 13:10:01 +01:00
target mpc85xx: Patch HiveAP 330 u-boot to fix boot 2022-02-19 19:20:29 +01:00
toolchain toolchain: glibc: Remove patch for ARC700 2022-02-01 21:25:02 +01:00
tools tools/cmake: add MAKE config variable 2022-02-11 12:04:09 +01:00
.gitattributes
.gitignore .gitgnore: add llvm-bpf 2021-11-21 18:18:01 +01:00
BSDmakefile
Config.in build: scripts/config - update to kconfig-v5.14 2022-02-19 13:10:01 +01:00
COPYING COPYING: add COPYING file to specify project licenses 2021-02-14 19:21:38 +01:00
feeds.conf.default feeds: use git-src-full to allow Git versioning 2022-02-15 00:24:24 +01:00
Makefile treewide: drop use of which 2022-01-17 09:14:26 +01:00
README.md README: mention video feed 2021-10-19 15:47:44 -10:00
rules.mk build: change PYTHON to python3 2022-01-24 13:29:05 +01:00

README.md

OpenWrt logo

OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.

Sunshine!

Development

To build your own firmware you need a GNU/Linux, BSD or MacOSX system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.

Requirements

You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.

binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.6+ rsync subversion unzip which

Quickstart

  1. Run ./scripts/feeds update -a to obtain all the latest package definitions defined in feeds.conf / feeds.conf.default

  2. Run ./scripts/feeds install -a to install symlinks for all obtained packages into package/feeds/

  3. Run make menuconfig to select your preferred configuration for the toolchain, target system & firmware packages.

  4. Run make to build your firmware. This will download all sources, build the cross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.

Related Repositories

The main repository uses multiple sub-repositories to manage packages of different categories. All packages are installed via the OpenWrt package manager called opkg. If you're looking to develop the web interface or port packages to OpenWrt, please find the fitting repository below.

  • LuCI Web Interface: Modern and modular interface to control the device via a web browser.

  • OpenWrt Packages: Community repository of ported packages.

  • OpenWrt Routing: Packages specifically focused on (mesh) routing.

  • OpenWrt Video: Packages specifically focused on display servers and clients (Xorg and Wayland).

Support Information

For a list of supported devices see the OpenWrt Hardware Database

Documentation

Support Community

  • Forum: For usage, projects, discussions and hardware advise.
  • Support Chat: Channel #openwrt on oftc.net.

Developer Community

License

OpenWrt is licensed under GPL-2.0