Detect some error pattern after starting the kernel
LAVA should try to detect some error pattern after starting the kernel. (but before any Starting kernel prompt) Example:
booti 0x40000000 0x43300000 0x43000000
bootloader-commands: Wait for prompt Starting kernel (timeout 00:03:45)
booti 0x40000000 0x43300000 0x43000000
Wrong Ramdisk Image Format
Ramdisk image is corrupt or invalid
Other possible problem are reset leading to another uboot prompt.
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