[PATCH 0/2] ARM: stm32: env: Enable scan and start for AB schema on STM32MP15 DHSOM

[Pascal Zimmermann]

For the STM32MP15 DHSOM, change the default environment so an AB schema
on a device can be detected.

The first patch makes possible to substitute the 'part list' command
inside 'scan_dev_for_boot_part' with a custom board specific
implementation.

The second patch uses the change of the first patch to plug the board
specific code for booting from AB into the standard boot of all boot
targets at the STM32MP15 DHSOM.

The detection works by looking for the partitions with specific lables.
The name of those partitions are in the variables and its defaults:
* dh_ab_partname_primary=rootfs-a
* dh_ab_partname_secondary=rootfs-b

To prevent being hanging at bootcmd, enable "CONFIG_BOOT_RETRY" and
"CONFIG_RESET_TO_RETRY", but the timer will only be activated, if the AB
partitions are detected.

Pascal Zimmermann (2):
  config_distro_bootcmd: make possible to substitute 'part list' in
    distro_bootcmd
  ARM: stm32: env: Enable scan and start for AB schema on STM32MP15
    DHSOM

 configs/stm32mp15_dhsom.config       |  3 +++
 include/config_distro_bootcmd.h      |  7 +++++-
 include/configs/stm32mp15_dh_dhsom.h | 33 ++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

Signed-off-by: Pascal Zimmermann <pzimmermann at dh-electronics.com>
---
Cc: Marek Vasut <marex at denx.de>
Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
Cc: Patrice Chotard <patrice.chotard at foss.st.com>
Cc: Tom Rini <trini at konsulko.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: u-boot at dh-electronics.com
Cc: uboot-stm32 at st-md-mailman.stormreply.com
Cc: u-boot at lists.denx.de

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