With the current firmware being pulled for the RPi3, recent revisions of
the RPi hardware, such as the 3 B+ will fail to boot.
The issue is exhibited as when RPi 3 B+ receives power and attempts to
boot, the power LED will turn off and the ACT LED will flash 8 times.
According to elinux.org troubleshooting guide[0] this correlates to an
SDRAM initialisation error that can be fixed by updating the firmware.
After updating this firmware the power light stays on, and UBoot can be
seen booting.
[0] - https://elinux.org/R-Pi_Troubleshooting#Green_LED_blinks_in_a_specific_pattern
Signed-off-by: Sachi King <nakato@nakato.io>
The package contains u-boot and the RPi firmware blobs. It expects
a tar ball of the root filesystem (including kernel and dtbs) on stdin
and produces a compressed tar ball on stdout with the files to copy to
a FAT32 formatted SD card.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
