error messages on serial console during BBGW bootup

The serial debug cable I ordered for my BBGW finally got here. I downloaded RCN’s most recent build, BBGW-blank-debian-8.5-seeed-iot-armhf-2016-09-04-4gb.img.

I did see a few errors on the serial console during the installation:

Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done
Formatting: /dev/mmcblk1 complete

…cut…

[ 116.630830] 6144 pages cma reserved

[ 116.634355] edma 49000000.edma: edma_prep_slave_sg: Failed to allocate a descriptor
[ 116.642061] omap_hsmmc 481d8000.mmc: prep_slave_sg() failed
[ 116.647671] omap_hsmmc 481d8000.mmc: MMC start dma failure
[ 117.305788] mmcblk1: unknown error -1 sending read/write command, card status 0x900
[ 117.313590] blk_update_request: I/O error, dev mmcblk1, sector 4720640
[ 117.320212] blk_update_request: I/O error, dev mmcblk1, sector 4720648
[ 117.326810] blk_update_request: I/O error, dev mmcblk1, sector 4720656
[ 117.333405] blk_update_request: I/O error, dev mmcblk1, sector 4720664

The installation does seem to continue, and it shuts down cleanly at the end. Not sure if those I/O errors are important.

When I reboot it without the micro SD card, things seem OK, though I see this:

[ 2.169781] PM: Cannot get wkup_m3_ipc handle
[ 2.289107] bone_capemgr bone_capemgr: slot #0: No cape found
[ 2.333102] bone_capemgr bone_capemgr: slot #1: No cape found
[ 2.377098] bone_capemgr bone_capemgr: slot #2: No cape found
[ 2.421098] bone_capemgr bone_capemgr: slot #3: No cape found
Loading, please wait…
fsck: error 2 (No such file or directory) while executing fsck.ext4 for /dev/mmcblk1p1
fsck exited with status code 8

I’m then presented with the usual login prompt. When I login and run ifconfig, I see no wireless device. But if I wait a minute or so and try again, the wireless eventually does show up.

Is this par for the course? Should I be worried about any of these errors?

Stéphane

I am also facing similar issues of not being able to boot the BBGW. Can you recommend which debugger/cable did you use. I tries searching the net but found only your page.

-Amit

http://elinux.org/Beagleboard:BeagleBone_Black_Serial

Regards,