37 lines
1.3 KiB
Plaintext
37 lines
1.3 KiB
Plaintext
#
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# U-Boot bootscript for altbootcmd (boot fallback after N failed boot retries)
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#
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# U-Boot tries to boot the active system for a number of tries. If the limit
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# is reached, altbootcmd is run instead. This is the script that it will run.
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# It has to:
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# * switch active partitions bank in case of dual boot systems
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# * reset the 'bootcount' number
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# * reboot the system
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if test "${dualboot}" = "yes"; then
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if test "${active_system}" = "linux_a"; then
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setenv active_system linux_b
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part number mmc ${mmcbootdev} linux_b linux_b_index
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setexpr mmcpart ${linux_b_index}
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# Save the partition index on variable rootfs_b_index
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part number mmc ${mmcbootdev} rootfs_b rootfs_b_index
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# Save the rootfs_b UUID into mmcroot_b
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part uuid mmc ${mmcbootdev}:${rootfs_b_index} mmcroot_b
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setenv mmcroot PARTUUID=${mmcroot_b}
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else
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setenv active_system linux_a
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part number mmc ${mmcbootdev} linux_a linux_a_index
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setexpr mmcpart ${linux_a_index}
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# Save the partition index on variable rootfs_a_index
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part number mmc ${mmcbootdev} rootfs_a rootfs_a_index
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# Save the rootfs_a UUID into mmcroot_a
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part uuid mmc ${mmcbootdev}:${rootfs_a_index} mmcroot_a
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setenv mmcroot PARTUUID=${mmcroot_a}
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fi
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saveenv
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echo "## System boot failed; Switching active partitions bank to ${active_system}..."
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fi
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bootcount reset
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reset
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