I'm hoping to 1) get some clarification for proper procedures for SD
formatting and running Angstrom, and 2) ideas for fixing the kernel
- SD card 8GB Kingston
- Beagleboard: Rev. C4 (BB*)
- Host PC: Ubuntu 11.04
- Beagleboard powered through USB OTG
- LCD display hooked up to Beagleboard (HDMI)
- Serial output via MiniCom (IDC10 to DB9 to Null Modem)
I spent a couple of days trying things from various instructions
guides, but couldn't find anything that would boot to Angstrom. I
think that there were issues with outdated mmc commands being called.
I kept getting:
Hit any key to stop autoboot: 0
mmc - MMC sub system
mmc read addr blk# cnt
Anyway, I came to the conclusion that I should try with a fresh start.
Here's what I did:
1. Cleared NAND with 'nand erase'. BB booted to 40W with some wingding-
2. Couldn't boot off SD Card by holding input button, so I connected
to the BB through UART following instructions here: http://elinux.org/BeagleBoardRecovery
3. Flashed U-boot and X-loader to NAND with instructions here:
4. Formatted SD card as per: http://code.google.com/p/beagleboard/wiki/LinuxBootDiskFormat
(used FAT32 and entered 51 for end of first partition)
5. Copied MLO and u-boot.bin from http://www.angstrom-distribution.org/demo/beagleboard/
to first partition of SD card.
6. Extracted Angstrom*bz2 and modules*tgz to the second partition of
the SD card.
7. Inserted SD card into BB and powered up the card. All I saw was:
Starting kernel ...
8. I changed 'console=tty2,115200n8' to 'console=ttyS2,115200n8' in U-
boot and was able to see more print-outs while uncompressing Linux.
The last line is: [ 12.172271] Kernel panic - not syncing: Fatal
exception in interrupt (Full set of lines at end of this post). The
monitor displayed a black screen with a beagleboard banner.
---> Based on a search, it seems this may be caused by 1) using power
through the USB OTG and/or 2) a conflict in loader, distro, etc. I got
all the files from the angstrom-distribution site, so I suspect it's
the power issue, but I wanted to make sure the rest of my steps were
okay. Are they?
---> I also want to plug a mouse and keyboard into the BB, and was
thinking of getting this from Special Computing:
https://specialcomp.com/beagleboard/DSCN0394.JPG Any known issues
(kernel panic, insufficient power, keyboard/mouse conflicts, etc) with
---> Also, is this cause for concern?: (I do eventually want to send
timed out in wait_for_pin: I2C_STAT=0
I2C read: I/O error