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Add environment variables to the AST2600 to boot a certain FIT
configuration of the kernel based on the "fitconfig" environment
variable. The boot command will fall back to the default FIT config
in case all other boot attempts fail. Also fix the kernel boot
arguments in the case that boot failure occurs.
The boot sequence would be:
- boota with fitconfig, if it fails:
- boota without fitconfig, if it fails:
- bootb with fitconfig, if it fails:
- bootb without fitconfig
Tested: Set fitconfig to a dummy variable, and also changed the bootm
command to a dummy command to force a boot failure, and verified the
sequence was as expected:
ast# boot
boota
Error loading kernel FIT image with fitconfig rainier-dummy
Unknown command 'bootm-dummy' - try 'help'
Error loading kernel FIT image
bootb
Error loading kernel FIT image with fitconfig rainier-dummy
Unknown command 'bootm-dummy' - try 'help'
Error loading kernel FIT image
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
Change-Id: I14cf935a707bdb95b0a6e4e607919ea0e027d18c
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