Booting to 3.2.28 kernel in BeagleBoard xM

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1

Hi all! I am trying to use the images found in this link:
http://dominion.thruhere.net/angstrom/nightlies/v2013.12/beagleboard/
which are nightlies builds of Angstrom.
I am trying to use them in a Beagleboard xM rev C.
U-Boot boots just fine, but, when it is supposed to load and boot kernel, it halts. The dump of console follows bellow.
Thanks in advance!

`
U-Boot 2011.09-01172-gfdbe8b9-dirty (Apr 15 2014 - 20:03:14)

OMAP3630/3730-GP ES1.2, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: 0 MiB
MMC: OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment

In: serial
Out: serial
Err: serial
Beagle xM Rev C
No EEPROM on expansion board
I2C read: I/O error
Unrecognized expansion board: 0
Die ID #625a00029ff800000163810c1202401d
Net: Net Initialization Skipped
No ethernet found.
Hit any key to stop autoboot: 0
The user button is currently NOT pressed.
SD/MMC found on device 0
reading uEnv.txt

128 bytes read
Loaded environment from uEnv.txt
Importing environment from mmc …
Loading file “/boot/uImage” from mmc device 0:2 (xxa2)
4335448 bytes read
Booting from mmc …

Booting kernel from Legacy Image at 80200000 …

Image Name: Linux-3.2.28
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4335384 Bytes = 4.1 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum … OK
Loading Kernel Image … OK
OK

Starting kernel …

Uncompressing Linux… done, booting the kernel.

`

2

blast from the past...

in your uEnv.txt, did you specify ttyS2 or ttyO2 for the serial console?

O as in Omap not 0 as in zero...

Regards,

3

That was frighteningly fast! I just copied some random, old uEnv.txt i found here, since i never really got this uEnv.txt or u-boot commands :confused:
Here is a copy of the uEnv.txt that i am using:

mpurate=1000 dvimode="hd720 omapfb.vram=0:8M,1:4M,2:4M" vram=16M optargs="consoleblank=0" console="tty0 console=ttyS2,115200n8"

4

replace that ttyS2 with ttyO2 and retry..

I don't remember when we did the ttyS2 -> ttyO2 dance... but it was painful. :wink:

Regards,

5

Still no luck. Is there a correlation with /dev content ? I mean, in /dev, there are a few tty*.
As I pointed out, i have absolutely no idea of the meaning of uEnv :frowning:
This last line seems funny. Shouldnt it be something like
console=“tty0”
console=“ttyS2,115200n8”
In separate lines?

Thanks!!
Paulo Sherring.

6

Still no luck. Is there a correlation with /dev content ? I mean, in /dev,
there are a few tty*.

ttyS2 = /dev/ttyS2
ttyO2 = /dev/ttyO2

As I pointed out, i have absolutely no idea of the meaning of uEnv :frowning:

This last line seems funny. Shouldnt it be something like
console="tty0"
console="ttyS2,115200n8"

no, it's a variable.. so it would first set
console=tty0

then re-set it as:
console=ttyS2,115200n8

After u-boot loads and processes uEnv.txt, it would passing this to the kernel..

console=tty0 console=ttyS2,115200n8

Regards,

7

I get it, i guess. Is there some kind of default uEnv.txt?
The found a few, but none of them seems “stock” and all claim to be default :stuck_out_tongue:

Thanks!

8

There's really no such thing as "stock"..

uEnv.txt "user environment", it's just easily allow you to update a
few variables. But it's usually tied to both the "u-boot" and
"rootfs/kernel"..

Regards,

9

One more thing: when trying to boot to a 2.6.32 kernel, i get several “…” after the “Uncompressing Linux” message and before the "done, booting the kernel." I my 3.2 kernel image, it only show me some very fast “…” and that is it.
I wonder if there is something wrong with the kernel I am using.