Running stm32mp1 watchdog is properly recognized and handled by kernel
watchdog framework since Linux v5.6.
Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Pierre-Jean Texier <texier.pj2@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Running stm32mp1 watchdog is properly recognized and handled by kernel
watchdog framework since Linux v5.6. For details see the Linux commit
85fdc63fe256 ("drivers: watchdog: stm32_iwdg: set WDOG_HW_RUNNING at
probe"). So U-Boot config fragment can be safely removed without
adding userspace watchdog daemon.
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The stm32mp157 images successfully boot only once. Subsequent boot
attempts fail to reach U-Boot. The root cause turns out to be in U-Boot
corruption during the first boot. The stm32mp1 U-Boot stores its
environment at the end of GPT partition named 'ssbl' since v2020.10-rc2.
However Buildroot genimage template for stm32mp157 boards creates 'ssbl'
partition w/o extra space for U-Boot primary and redundant environments.
This patch explicitly specifies 'ssbl' partition size that should be
enough for both u-boot.stm32 image (~1M) and both environments (16K).
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Tested-by: Pierre-Jean Texier <texier.pj2@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
As described by [1], the kernel generated by the configuration for the
STM32f469 Discovery board is buggy. Using a newer kernel, as suggested
by [1], increases the dtb and Kernel image size. In particular, the
5.12 version of the kernel generates a dtb and a kernel image whose sum
exceeds the 2 MByte of the flash module.
So I decided to replace the afboot-stm32 bootloader in the flash with
U-boot to easily boot the system from sdcard without having to worry
about the size of dtb, kernel and rootfs generated by the configuration.
This solution allows you to fix the kernel boot issue and makes it
possible to use its future versions.
[1] http://buildroot-busybox.2317881.n4.nabble.com/Bug-11746-New-stm32f469-didn-t-work-correctly-td219644.html
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Acked-by: Christophe Priouzeau <christophe.priouzeau@foss.st.com>
Tested-by: Christophe Priouzeau <christophe.priouzeau@foss.st.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Arnout:
- specify headers version explicitly, even though it's default;
- bump kernel to 5.12.11]
Very similar to the other stm32mp157-based boards, except that we use the
multi_v7 defconfig for ease of maintenance.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit changes the stm32mp1 configurations to use the TF-A ->
U-Boot boot flow (called "trusted boot flow" by ST) instead of the
U-Boot SPL -> U-Boot boot flow. ST recommands this trusted boot, and
it's also the only one that allows to use the STM32 Cube Programmer
for reflashing devices.
As part of this, the genimage configuration file is now generated, as
it contains some file names that depend on the platform. Removing
partition-type from genimage.cfg is mandatory, since it would cause a
hybrid MBR partition table to be created, which itself would prevent
ATF from finding the ssbl parition.
Signed-off-by: Shlomi Vaknin <shlomi.39sd@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Let's clean up "boards/stmicroelectronics" directory a bit
to have everything in particular directories.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The board support package includes the following components:
- U-Boot 2020.01
- Linux 5.4.26
- Buildroot default packages
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
It will be useful for the upcoming introducing stm32mp157a dk2 board.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Let genimage to match the size of the rootfs image instead.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Now that the metadata_csum ext4 option is disabled, we no longer need
the U-Boot workaround.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
That is useful and needed for upcoming introducing stm32mp157a-dk1 board.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Change partition name according to the U-Boot requirements.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit adds a minimal defconfig to build a Buildroot system for
the STM32MP157 Discovery Kit, which is the low-cost evaluation
platform for the new STM32MP157 system-on-chip from ST. This
system-on-chip features a single or dual Cortex-A7, a single
Cortex-M4, and a wide variety of peripherals.
This commit includes a custom linux configuration file, because there
is no specific defconfig for this platform in the kernel, only
multi_v7_defconfig supports it, which is really a massive
defconfig. That's why a custom linux configuration file is added.
A small U-Boot config fragment allows to disable the watchdog, so that
userspace by default doesn't need to have a watchdog daemon running.
The vendor U-Boot and Linux trees are used for the moment, but the
platform support is being upstreamed, so switching to upstream
versions will be possible in the relatively near future.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Manual change because the script uses ${OUTPUT_DIR}/host instead of
${HOST_DIR}.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Manual change because the script uses ${OUTPUT_DIR}/host instead of
${HOST_DIR}.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Use kernel 4.11 for stm32f4 discovery board
(stm32f429i-disco and stm32f469i-disco).
Signed-off-by: Christophe Priouzeau <christophe.priouzeau@st.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Since the bump of OpenOCD from 0.9.0 to 0.10.0 in commit
3b6c74d708, stm32f469_disco_defconfig
fails to build:
- 0001-add-config.patch was merged in upstream OpenOCD (commit
26045588f462476cee356d15a24944d6c26befb4).
- 0002-flash-nor.patch was merged in upstream OpenOCD (commit
3e219648c80a27f0519003f3b088cbb846e255d8)
Therefore, this commit removes the two patches that are no longer
necessary.
Fixes:
https://gitlab.com/buildroot.org/buildroot/builds/15762279
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This change renders the stm32f429discovery a bit more generic and reuse most
of its settings for the stm32f429-disc1 board.
Cc: Waldemar Brodkorb <wbx@openadk.org>
Cc: Davide Viti <zinosat@tiscali.it>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Config can be used by other noMMU targets as qemu-system-m68k
with coldfire emulation.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Similar to stm32f429_disco, this commit adds a configuration for the
Cortex-M4 based STM32F469 platform.
It requires a few kernel patches, which have already been submitted
upstream, as well as a small OpenOCD patch. Besides that, it re-uses
most of what has been added for the STM32F429 platform.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Thomas:
- squash multiple patches from Lee Jones into one
- improve the readme.txt file
- sync the defconfig with the adaptations made to the stm32f429
configuration.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit adds a defconfig for the STM32F429 platform, which is
based on a Cortex-M4 core from ST Microelectronics. It is therefore
the first noMMU ARM platform supported in Buildroot.
This commit includes some files that will be common to several STM32
platforms (hence in board/stmicroelectronics) and some files that are
specific to the STM32F429 (hence in
board/stmicroelectronics/stm32f429-disco). More specifically, this
commit adds:
- A minimal Busybox configuration, which is small enough to boot
without causing OOM on such small noMMU platforms. The resulting
Busybox, statically linked with uClibc-ng, weights around 220
KB. For now, this file is located in board/stmicroelectronics/, but
we might consider moving it to package/busybox/ in the future if
needed.
- A post-build script that removes the mounting of /dev/pts (not
enabled in the kernel and not very useful for a system that has no
network and no X), and removes the network related init script and
configuration files (no network support).
- A flash.sh script, to perform the right OpenOCD invocations to
reflash the board.
- One small kernel patch to adjust the kernel command line in the
Device Tree, since it's the only way to do so.
- The usual readme.txt file.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Thomas:
- squashed multiple patches from Lee Jones together
- added the minimal Busybox configuration
- added the post-build script
- improved the flashing script to not hardcode the location of the
output directory
- add the small kernel patch
- improve the readme.txt file
- test on HW the resulting image, after using the internal toolchain.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
