cmd: Add 'ab_select' command
For A/B system update support the Android boot process requires to send
'androidboot.slot_suffix' parameter as a command line argument. This
patch implementes 'ab_select' command which allows us to obtain current
slot by processing the A/B metadata.
The patch was extracted from commit [1] with one modification: the
separator for specifying the name of metadata partition was changed
from ';' to '#', because ';' is used for commands separation.
[1] https://android-review.googlesource.com/c/platform/external/u-boot/+/729880/2
Signed-off-by: Ruslan Trofymenko <ruslan.trofymenko@linaro.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
Reviewed-by: Alistair Strachan <astrachan@google.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index e1e050f..9e66cc1 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1198,6 +1198,21 @@
endmenu
+menu "Android support commands"
+
+config CMD_AB_SELECT
+ bool "ab_select"
+ default n
+ depends on ANDROID_AB
+ help
+ On Android devices with more than one boot slot (multiple copies of
+ the kernel and system images) this provides a command to select which
+ slot should be used to boot from and register the boot attempt. This
+ is used by the new A/B update model where one slot is updated in the
+ background while running from the other slot.
+
+endmenu
+
if NET
menuconfig CMD_NET