Some USB devices cause the USB stack to get stuck with a stall error.
This adds a patch which recovers from this situation.
This avoids an U-Boot crash when Arduino Mega R3 devices are connected,
which cause an USB stall when trying to read the product string.
When a USB keyboard is connected to Raspberry Pi 32-bit versions of
U-Boot crashed in certain situations just before booting Linux. This
seems to be cause by a buffer overflow when removing the USB keyboard
before hand-over to Linux.
The minimal memory reserved parameter vm.min_free_kbytes should be
between 1-3% according to RedHat.
However, the kernel by default reserves around 3MB (e.g. only 3285 on a
32-bit Raspberry Pi 4 2GB installation). This seems to be too low for
network intensive applications such as ours: Under memory pressure
"page allocation failure" on various orders have been observed.
Raspberry Pi OS uses a fixed value of 16MB. Follow this setting for now.
Note: We cannot set this globally for Home Assistant: x86-64 machines
can have quite a bit more memory, which also requires increased
min_free_kbytes parameter. ODROID-N2 on the other hand uses transparent
huge pages: If enabled, the kernel requires higher min_free_kbytes
values, and sets those also by default (e.g. on ODROID-N2+ with 4GB
memory its set to 22528 by default).
* Add squashfs with LZ4 and LZO compression to Barebox
* Add squashfs with LZO compression to U-Boot
* Use squashfs for Linux kernel partition
Generate a squashfs image with LZO compression for the Linux kernel
partition. Adjust the boot scripts to be file system independent commands
to boot from squashfs.
Since 0001-CMD-read-string-from-fileinto-env.patch is in the global
directory to be applied for U-Boot, drop it from the Raspberry Pi
specific patch directory.
* add eq3_char_loop package (eQ-3 char loopback kernel module)
* add generic_raw_uart package (low-latency raw UART kernel driver)
* add rpi-rf-mod package
* add device tree overlay support for RPI-RF-MOD/HM-MOD-RPI-PCB on Raspberry Pi
* enable GPIOLIB and GPIO_SYSFS required for RPI-RF-MOD/HM-MOD-RPI-PCB support.
* add basic RPI-RF-MOD/HM-MOD-RPI-PCB support for ASUS Tinker Board
* add device tree overlay support for ASUS Tinker Board and add
haos-config.txt loading support to U-Boot boot script
* Re-add patches missed with U-Boot 2021.04-rc4 upgrade
Also add patches for Raspberry Pi again.
* Regenerate patches for U-Boot 2021.04
* Update to U-Boot 2021.04
Bump to the latest U-Boot release 2021.04-rc4. This alows to drop quite
some patches which have been sent to the mailing list or picked from the
mailing list and have been merged upstream now.
Move to the new Linux 5.10 based kernel for all Raspberry Pi boards.
This uses the version of the last OS version used in Raspberry Pi OS
raspberrypi-kernel_1.20210201-1.
systemd-udevd substitutes variables starting with $ in the PROGRAM
argument. If a shell variable is to be used, two $ need to be used to
escape properly. This fixes three instances of the following warning:
Invalid value "..." for PROGRAM (char 58: invalid substitution type), ignoring, but please fix it.
It seems that page table mappings for compressed tables cause issues in
certain situation leading to "zram: Decompression failed!" errors.
Upstream Linux seems to have recognized the problem and a patch to drop
the functionality entirly has been proposed:
https://lore.kernel.org/linux-mm/20201117135632.GA27763@infradead.org/
The change "Avoid trying to boot non-existing kernel image in failover
case" introduced a broken boot script on Raspberry Pi (when booting from
partition B) and ODROID-XU4.
* Add 2020-10-28 beta EEPROM
This improves boot from USB and speeds up boot times.
also includes sd card v1 boot reliability.
see https://github.com/raspberrypi/rpi-eeprom/pull/246
Also add HDMI_DELAY=0 so HDMI display is always visible
for easier debugging.
* Avoid trying to boot non-existing kernel image in fail-over case
The A/B update system automatically switches to the other boot slot when
booting fails. However, in a fresh installation, only boot slot A
exists. If booting fails three times (e.g. if somebody plugs out power
before the slot can be marked as good), then the system switches to boot
slot B which does not contain a kernel image yet. Avoid trying to boot
the non-existing kernel image.
With this change, if slot B is empty U-Boot will restore both slots to 3
attempts and retry booting from slot A on next reboot:
```
Trying to boot slot B, 2 attempts remaining. Loading kernel ...
** Unrecognized filesystem type **
No valid slot found, resetting tries to 3
storing env...
```
Co-authored-by: Pascal Vizeli <pascal.vizeli@syshack.ch>
* Bump Raspberry Pi kernel to 5.4
Bump kernel to the downstream Raspberry Pi 5.4 kernel. Drop patches
already merged upstream and use rebased patches for USB reset
controller (required for U-Boot 2020.10 for USB SSD boot).
* Add compatible node for upstream U-Boot
Add brcm,bcm2835-pl011 to make upstream U-Boot bind with the
bcm283x_pl011 driver. This allows to boot with the device tree provided
by the Raspberry Pi Linux kernel 5.4 even without enable_uart=1.
This reverts commit c92b4b54be.
Pure GPT would be nice, but older EEPROM/firmware version seem not to
handle it properly (before EEPROM 2020-09-03/firmware 2020-10-22). Since
devices still get shipped with older EEPROM we currently moving to pure
GPT would make those devices not booting.
Stick with hybrid mode for now to make sure HAOS boots on all devices no
matter if a new or old EEPROM is in use.
The patch causes U-Boot freezes in some configurations. The root cause
is that U-Boot does not allow to use the bss section in pre-relocation
code (which is where the UART is used). Drop the patch as it is not
required currently.
See also:
http://u-boot.10912.n7.nabble.com/RPi4-U-Boot-freeze-td424432.html#a427198
The to symlink serial0/1 currently might apply to the first or second
ttyAMAX instance. In downstream, a patch makes sure that the first
PL011 is always ttyAMA0. However, upstream the numbering depends on the
UART alias, which leads to the first PL011 being ttyAMA1.
Check the actual iobase too to make sure we are dealing with the first
PL011 instance.
See also:
05cfe136f7 (diff-2678c183f503319c8d8c09c818af789a)
* Backport USB PCIe/XHCI patches to U-Boot 2020.07
Backport relevant patches required to make PCIe/USB XHCI work.
* Backport/integrate PCIe device tree changes from upstream Linux
U-Boot uses the device tree provided by upstream Linux. Make sure the
device tree has the relevant chanages to make VL805 USB controller
reset work.
* Document RPi 4 USB mass storage support (#746)
