u-boot.git/board/siemens, branch master Unnamed repository; edit this file 'description' to name the repository. siemens: capricorn: rework bootcmd environment variables 2026-02-28T18:31:50+00:00 Adrian Freihofer adrian.freihofer@siemens.com 2026-02-17T16:39:10+00:00 bf3c641e97578388d3b1e126bdd1b76311c7536b Rework the boot state machine to a significantly simpler and more robust implementation. The basic idea is to revert to the previous partition whenever an issue is detected during the boot process. - Broken SPL If one of the two SPLs does not boot, the ROM code of the i.MX8 SoC automatically starts the second SPL from the second boot partition. For example, if the system's active partition is A but the SPL from partition A is broken, the ROM code automatically uses the SPL/u-boot from partition B. Proceeding with this boot procedure would lead to booting the kernel/ rootfs from partition A, which could potentially successfully boot the system and allow the user to apply the firmware update with the broken SPL again. This would lead to a non-bootable system because the second update would overwrite the last working bootloader. To prevent such situations, zigzag boots are detected and the system reverts to the previous partition rather than booting the kernel/rootfs from the currently active partition. Detecting zigzag boots is done via the new fallback variable. To make this state machine even more consistent, the partitionset_active variable is no longer used to determine the active partition during boot. Instead, the active partition is always read from the eMMC partconf registers. For backward compatibility, the partitionset_active variable is still updated whenever a partition switch occurs. However, u-boot no longer relies on this variable, as it could potentially be out of sync with the actual partition state, leading to situations where the ROM code of the i.MX8 SoC would be out of sync with u-boot. - Broken kernel, initramfs or rootfs If the upgrade_available variable is set, u-boot counts the number of consecutive boots via the bootcount variable. If the bootcount exceeds the bootlimit variable, u-boot starts the altbootcmd instead of the bootcmd. Previously, this logic was bypassed by assigning the regular bootcmd to altbootcmd. Now, the altbootcmd is used to revert to the previous partition when the bootlimit is exceeded. The netdev variable is changed to eth0 by default. This is what the FEC driver uses on Capricorn boards. For devices with switches and DSA subsystems in use, the netdev should be set accordingly by additional logic in the environment or u-boot code. This is not part of this commit. Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com> Signed-off-by: Heiko Schocher <hs@nabladev.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> 
Rework the boot state machine to a significantly simpler and more
robust implementation. The basic idea is to revert to the previous
partition whenever an issue is detected during the boot process.

- Broken SPL

  If one of the two SPLs does not boot, the ROM code of the i.MX8 SoC
  automatically starts the second SPL from the second boot partition.
  For example, if the system's active partition is A but the SPL from
  partition A is broken, the ROM code automatically uses the SPL/u-boot
  from partition B.
  Proceeding with this boot procedure would lead to booting the kernel/
  rootfs from partition A, which could potentially successfully boot
  the system and allow the user to apply the firmware update with the
  broken SPL again. This would lead to a non-bootable system because
  the second update would overwrite the last working bootloader.
  To prevent such situations, zigzag boots are detected and the system
  reverts to the previous partition rather than booting the kernel/rootfs
  from the currently active partition. Detecting zigzag boots is done
  via the new fallback variable.

  To make this state machine even more consistent, the partitionset_active
  variable is no longer used to determine the active partition during
  boot. Instead, the active partition is always read from the eMMC
  partconf registers.
  For backward compatibility, the partitionset_active variable is still
  updated whenever a partition switch occurs. However, u-boot no longer
  relies on this variable, as it could potentially be out of sync with
  the actual partition state, leading to situations where the ROM code
  of the i.MX8 SoC would be out of sync with u-boot.

- Broken kernel, initramfs or rootfs

  If the upgrade_available variable is set, u-boot counts the number of
  consecutive boots via the bootcount variable. If the bootcount exceeds
  the bootlimit variable, u-boot starts the altbootcmd instead of the
  bootcmd. Previously, this logic was bypassed by assigning the regular
  bootcmd to altbootcmd. Now, the altbootcmd is used to revert to the
  previous partition when the bootlimit is exceeded.

The netdev variable is changed to eth0 by default. This is what the FEC
driver uses on Capricorn boards. For devices with switches and DSA
subsystems in use, the netdev should be set accordingly by additional
logic in the environment or u-boot code. This is not part of this commit.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Heiko Schocher <hs@nabladev.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
siemens: capricorn: fix fallback bootm call for fitImage 2026-02-28T18:31:50+00:00 Walter Schweizer walter.schweizer@siemens.com 2026-02-17T16:39:09+00:00 2b19fea315ccd3ac40621b00619cae7a5b95ee17 When dtb_name is missing or a configuration is missing, try to boot the default configuration in the image. The call to bootm needs the correct loadaddr to succeed. Fixes booting when factoryset is missing. Signed-off-by: Walter Schweizer <walter.schweizer@siemens.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> 
When dtb_name is missing or a configuration is missing, try to
boot the default configuration in the image. The call to bootm needs
the correct loadaddr to succeed.

Fixes booting when factoryset is missing.

Signed-off-by: Walter Schweizer <walter.schweizer@siemens.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
siemens: capricorn: always detect emmc device 2026-02-28T18:31:50+00:00 Heiko Schocher hs@nabladev.com 2026-02-17T16:39:08+00:00 c019f813149325d4f3f8f9b94255e3fb4d3881e5 drop Environment variable mmcautodetect and the board logic behind it, as we want always to autodetct the emmc device. Signed-off-by: Heiko Schocher <hs@nabladev.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> 
drop Environment variable mmcautodetect and the board logic
behind it, as we want always to autodetct the emmc device.

Signed-off-by: Heiko Schocher <hs@nabladev.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
siemens: capricorn: add logic to U-Boot to avoid zig-zag boot 2026-02-28T18:31:50+00:00 Heiko Schocher hs@nabladev.com 2026-02-17T16:39:07+00:00 4e67785e6dfa37b8f08c432bd9cdfcb0919d00ec add logic in board code for detecting the real boot partition and set a local hush shell variable fallback which can be used later in boot variables for detecting a ROM bootloader fallback case. We use the local hush shell variable, as we do not want to save in any case the fallback variable in U-Boot Environment, as the default Environment is maybe saved in boards, which are downgraded to older U-Boot versions. And than the board code does not run, and fallback never gets the correct value. Introduce also hush shell variable envvers to value "v2_" so we can use them in Environment for running different versions of variables between new and old U-Boot images. Signed-off-by: Heiko Schocher <hs@nabladev.com> Signed-off-by: Walter Schweizer <walter.schweizer@siemens.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> 
add logic in board code for detecting the real boot
partition and set a local hush shell variable fallback
which can be used later in boot variables for detecting
a ROM bootloader fallback case.

We use the local hush shell variable, as we do not want
to save in any case the fallback variable in U-Boot
Environment, as the default Environment is maybe saved
in boards, which are downgraded to older U-Boot versions.

And than the board code does not run, and fallback never
gets the correct value.

Introduce also hush shell variable envvers to value "v2_"
so we can use them in Environment for running different
versions of variables between new and old U-Boot images.

Signed-off-by: Heiko Schocher <hs@nabladev.com>
Signed-off-by: Walter Schweizer <walter.schweizer@siemens.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
arm: at91: move atmel_serial.h to include/dm/platform_data 2026-02-04T12:12:56+00:00 Robert Marko robert.marko@sartura.hr 2026-01-12T13:12:39+00:00 1bc75c26524009005eae17293131e0de69039010 Move the arch specific atmel_serial.h header from AT91 to the generic include/dm/platform_data. This will be used for support on Microchip LAN969x. Signed-off-by: Robert Marko <robert.marko@sartura.hr> 
Move the arch specific atmel_serial.h header from AT91 to the generic
include/dm/platform_data.

This will be used for support on Microchip LAN969x.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
corvus: migrate red LED to the modern API 2025-12-05T19:38:09+00:00 Quentin Schulz quentin.schulz@cherry.de 2025-11-19T17:01:14+00:00 b06e52f2ea937077b3ff8296e4a67648138ac897 red_led_on is either called from the legacy LED shell command (which is disabled for corvus) or from arm-specific assembly code right before jumping into board_init_r() in U-Boot proper. Let's migrate to use the more modern LED subsystem by migrating to DM. The default-state is set to on to mimic red_led_on() from the arm-specific assembly code as a missing default-state FDT property currently means the LED is not probed except if explicitly done via the led shell command. Note though that this is running much later in the boot process, once DM is started. Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de> Reviewed-by: Heiko Schocher <hs@nabladev.com> 
red_led_on is either called from the legacy LED shell command (which is
disabled for corvus) or from arm-specific assembly code right before
jumping into board_init_r() in U-Boot proper.

Let's migrate to use the more modern LED subsystem by migrating to DM.

The default-state is set to on to mimic red_led_on() from the
arm-specific assembly code as a missing default-state FDT property
currently means the LED is not probed except if explicitly done via the
led shell command. Note though that this is running much later in the
boot process, once DM is started.

Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Heiko Schocher <hs@nabladev.com>
corvus: remove green led support 2025-12-05T19:38:09+00:00 Quentin Schulz quentin.schulz@cherry.de 2025-11-19T17:01:12+00:00 bb35d28701a3fac735c2dc891643086b80abfab3 green_led_on and green_led_off are only called by the legacy LED command (CONFIG_LED_STATUS_CMD) when CONFIG_LED_STATUS_GREEN is enabled, both of which aren't enabled for corvus, so let's simply remove it as it's dead code. Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de> Reviewed-by: Heiko Schocher <hs@nabladev.com> 
green_led_on and green_led_off are only called by the legacy LED command
(CONFIG_LED_STATUS_CMD) when CONFIG_LED_STATUS_GREEN is enabled, both of
which aren't enabled for corvus, so let's simply remove it as it's dead
code.

Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Heiko Schocher <hs@nabladev.com>
capricorn: Stop disabling device tree relocation 2025-11-29T17:42:26+00:00 Tom Rini trini@konsulko.com 2025-11-19T14:50:25+00:00 5da84c1c37d3f5fcf0c0fe3d17dac94064818bed Remove setting of fdt_high to ~0, which disables device tree relocation, from the default environment. Doing so prevents U-Boot from correcting problems such as having an unaligned device tree and leads to various failure modes in the OS. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Reviewed-by: Heiko Schocher <hs@nabladev.com> 
Remove setting of fdt_high to ~0, which disables device tree relocation,
from the default environment. Doing so prevents U-Boot from correcting
problems such as having an unaligned device tree and leads to various
failure modes in the OS.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Heiko Schocher <hs@nabladev.com>
MAINTAINERS: update email address of Heiko Schocher 2025-08-08T14:33:59+00:00 Heiko Schocher hs@nabladev.com 2025-08-08T11:40:14+00:00 9fd31937dd21245f9979d167d97ab66d065d3d56 use the new email address for community work. While at it, cleanup git shortlog output, by adding fixes in .mailmap Signed-off-by: Heiko Schocher <hs@nabladev.com> 
use the new email address for community work.

While at it, cleanup git shortlog output, by adding
fixes in .mailmap

Signed-off-by: Heiko Schocher <hs@nabladev.com>
treewide: Remove empty board_init() function from all boards 2025-07-24T19:30:19+00:00 Sam Protsenko semen.protsenko@linaro.org 2025-07-17T02:44:26+00:00 70a4d1fa1ddb2f5f8f9a27442563f182549abbb5 Commit 86acdce2ba88 ("common: add config for board_init() call") introduced CONFIG_BOARD_INIT option. This option can be disabled for the boards where board_init() function is not needed. Remove empty board_init() calls for all boards where it's possible, and disable CONFIG_BOARD_INIT in all related defconfigs. This cleanup was made semi-automatically using these scripts: [1]. No functional change, but the binary size for the modified boards is reduced a bit. [1] https://github.com/joe-skb7/uboot-convert-scripts/tree/master/remove-board-init Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Tested-by: Adam Ford <aford173@gmail.com> #imx8mm_beacon Tested-by: Bryan Brattlof <bb@ti.com> Acked-by: Peng Fan <peng.fan@nxp.com> #NXP boards 
Commit 86acdce2ba88 ("common: add config for board_init() call")
introduced CONFIG_BOARD_INIT option. This option can be disabled for the
boards where board_init() function is not needed. Remove empty
board_init() calls for all boards where it's possible, and disable
CONFIG_BOARD_INIT in all related defconfigs.

This cleanup was made semi-automatically using these scripts: [1].

No functional change, but the binary size for the modified boards is
reduced a bit.

[1] https://github.com/joe-skb7/uboot-convert-scripts/tree/master/remove-board-init

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Tested-by: Adam Ford <aford173@gmail.com> #imx8mm_beacon
Tested-by: Bryan Brattlof <bb@ti.com>
Acked-by: Peng Fan <peng.fan@nxp.com>  #NXP boards