fdt_addr and kernel_addr variables are getting obsolete in the mainline
u-boot in favor of fdt_addr_r and kernel_addr_r.
By checking if the new variables exist, we can make sure that devices with newer
version of u-boot will work while not breaking support for the existing ones.
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
Acked-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Not all versions of ESPRESSObin require SD card, but can
be booted from the internal emmc flash (mmc dev 1) instead.
Add a simple check in the bootscript to see which mmc device
is detected and boot from it using mmcdev variable.
Tested-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
All of U-Boot scripts repeat the same pattern with only Device Tree blob
name changing for respective device. Therefore create generic scripts
which will be altered on demad by image build process, and create
BOOT_SCRIPT variable which can be added to device recipe and will allow
referencing the same script by many device recipes. This will allow to
slim down the ammount of files in buildroot tree and avoid needlessly
incrementing amount of boot scripts if new devices will be added.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
