km: common: implement field fail-safe u-boot update
This patch provides possibility for field fail-safe u-boot updates.
The implementation can be used on all pg-wcom boards that are booting from
parallel NOR flash.
When used in a board design, provided check_for_uboot_update function will
start new u-boot at defined location if updateduboot envvar is set to yes.
With this implementation it is expected that factory programmed u-boot
will always stay as it is, and optionally new u-boot can be safely
programmed by embedded software when the unit is rolled out on the field.
It is expected check_for_uboot_update to be called early in execution
before relocation (*_f) once SoC is basically initialized and environment
can be read, with this possibilities to not be able to fix a u-boot bug by
a u-boot update are reduced to minimum.
Signed-off-by: Aleksandar Gerasimovski <aleksandar.gerasimovski@hitachienergy.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/keymile/Kconfig b/board/keymile/Kconfig
index 7dd8213..863c07d 100644
--- a/board/keymile/Kconfig
+++ b/board/keymile/Kconfig
@@ -130,6 +130,38 @@
help
Page size of inventory in EEPROM.
+config PG_WCOM_UBOOT_UPDATE_SUPPORTED
+ bool "Enable U-boot Field Fail-Safe Update Functionality"
+ default n
+ help
+ Indicates that field fail-safe u-boot update is supported.
+ This functionality works only for designs that are booting
+ from parallel NOR flash.
+
+config PG_WCOM_UBOOT_BOOTPACKAGE
+ bool "U-boot Is Part Of Factory Boot-Package Image"
+ default n
+ help
+ Indicates that u-boot will be a part of the factory programmed
+ boot-package image.
+ Has to be set for original u-boot programmed at factory.
+
+config PG_WCOM_UBOOT_UPDATE_TEXT_BASE
+ hex "Text Base For U-boot Programmed Outside Factory"
+ default 0xFFFFFFFF
+ help
+ Text base of an updated u-boot that is not factory programmed but
+ later when the unit is rolled out on the field.
+ Has to be set for original u-boot programmed at factory.
+
+config PG_WCOM_UBOOT_UPDATE
+ bool "U-boot Is Part Of Factory Boot-Package Image"
+ default n
+ help
+ Indicates that u-boot will be a part of the embedded software and
+ programmed at field.
+ Has to be set for updated u-boot version programmed at field.
+
source "board/keymile/km83xx/Kconfig"
source "board/keymile/kmcent2/Kconfig"
source "board/keymile/km_arm/Kconfig"