[U-Boot] Issues with BeagleBone Black Wireless booting off eMMC

[Peter Robinson]

Hi All,

It seems there's a regression in 2019.04 when booting the BBone Black
Wireless off the onboard eMMC. It works fine if I boot off the SD
card.

It complains about not being about to see a partition, and manual
poking it will see the partitions and load from them, this previously
booted fine with 2019.01. Looking through various logs I can't see
where/why this changed.

Peter

U-Boot SPL 2019.04-rc4 (Mar 20 2019 - 15:03:10 +0000)
Trying to boot from MMC2
Loading Environment from FAT... Card did not respond to voltage select!


U-Boot 2019.04-rc4 (Mar 20 2019 - 15:03:10 +0000)

CPU  : AM335X-GP rev 2.1
Model: TI AM335x BeagleBone Black
DRAM:  512 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from FAT... MMC: no card present
<ethaddr> not set. Validating first E-fuse MAC
Net:   Could not get PHY for ethernet at 4a100000: addr 0
eth0: ethernet at 4a100000
Warning: usb_ether MAC addresses don't match:
Address in ROM is          de:ad:be:ef:00:01
Address in environment is  50:65:83:da:68:eb
, eth1: usb_ether
Hit any key to stop autoboot:  0
MMC: no card present
MMC: no card present
MMC: no card present
MMC: no card present
MMC: no card present
MMC: no card present
switch to partitions #0, OK
mmc1(part 0) is current device
SD/MMC found on device 1
** No partition table - mmc 1 **
** No partition table - mmc 1 **
## Error: "bootcmd_nand0" not defined
starting USB...
USB0:   Port not available.
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC de:ad:be:ef:00:01

<snip attempts at network boot off usb>

The remote end did not respond in time.=>
=> mmc list
OMAP SD/MMC: 0
OMAP SD/MMC: 1 (eMMC)
=> mmc dev 1
switch to partitions #0, OK
mmc1(part 0) is current device
=> mmc part

Partition Map for MMC device 1  --   Partition Type: DOS

Part    Start Sector    Num Sectors     UUID            Type
  1     2048            202753          ff24dd7d-01     ef Boot
  2     204801          1355775         ff24dd7d-02     83 Boot
  4     1560576         5910528         ff24dd7d-04     83
=>