ubuntu core webdm alpha para Beaglebone Black não inicializando

Question

Eu tentei o cartão SD piscando para Beaglebone Black com imagem 'Ubuntu Core WEBDM' ou seja, 'ubuntu-core-WEBDM-alpha-02_armhf-bbb.img' como mencionado nas etapas aqui .

Mas o sistema não é inicializado. Eu tenho o seguinte erro capturado no console serial. Agradecemos antecipadamente por suas sugestões e ajuda.

Do console:

Net:   <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
237 bytes read in 12 ms (18.6 KiB/s)
Loaded environment from uEnv.txt
Importing environment from mmc ...
Running uenvcmd ...
** File not found snappy-system.txt **
## Error: "snappy_boot" not defined
** File not found /boot/zImage **
switch to partitions #0, OK
mmc1(part 0) is current device
SD/MMC found on device 1
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
** Unable to read file uEnv.txt **
Running uenvcmd ...
** File not found snappy-system.txt **
## Error: "snappy_boot" not defined
** File not found /boot/zImage **
## Error: "nandboot" not defined
U-Boot#

    

Answer 1

Parece que uEnv.txt (no seu cartão SD) está errado. Altere ${bootpart} para ${mmcdev}:${mmcpart} , ou seja,

# where to load initrd
initrd_addr=0x88080000
# load Snappy environment and call into Snappy boot after processing this file
uenvcmd=load mmc ${mmcdev}:${mmcpart} ${loadaddr} snappy-system.txt; env import -t $loadaddr $filesize; run snappy_boot

Isso deve corrigir o erro "Arquivo não encontrado no snappy-system.txt" e permitir que o U-Boot continue.