[U-Boot-Users] Linux kernel startup

[Tiju]

Hi Harald,

>Please see my other e-mail response about this.  I still believe there
>might be some wrong memory / bus / core clock timing and or voltage
>issues.  

We changed the memory clock to a lower frequency(90MHz to 67MHz) and the the "Bad Data CRC" error has gone. Thanks alot.
Our settings are: EXTCLK = 12MHz
                                  FCLK = 271 MHz
                                  HCLK = 67.75 MHz

>please try to use u-boot's built-in memory verification code to
>veryify your memory before trying to boot a kernel on it.
We will do this now.

We are writing the kernel image directly to the ram to 33000000. Therefore as for now it is not copied from the flash.

>Is the hardware a prototype of a new board, or is it proven, verified
>hardware? 
Yes, the hardware is a new prototype.

The output now is as follows:

U-Boot 1..3.2 (Apr  7 2008 - 17:25:31)

DRAM:  128 MB
Flash: 32 MB
Using default environment

In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
## Booting image at 33000000 ...
   Image Name:   Linux kernel
   Image Type:   ARM Linux Kernel Image (gzip compressed)
   Data Size:    4278410 Bytes =  4.1 MB
   Load Address: 30008000
   Entry Point:  30008000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

Starting kernel ...

undefined instruction
pc : [<30008018>]          lr : [<310117bc>]
sp : 30fcfa78  ip : 30fcffb8     fp : 00000000
r10: 00000001  r9 : 30fcfe18     r8 : 30fcffdc
r7 : 31012ef4  r6 : 33000040     r5 : 31019514  r4 : 31019511
r3 : 30008000  r2 : 30000100     r1 : 0000016a  r0 : 00000000
Flags: nzCv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...


U-Boot 1.3.2 (Apr  7 2008 - 17:25:31)

DRAM:  128 MB
Flash: 32 MB
Using default environment

In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
## Booting image at 33000000 ...
   Image Name:   Linux kernel
   Image Type:   ARM Linux Kernel Image (gzip compressed)
   Data Size:    4278410 Bytes =  4.1 MB
   Load Address: 30008000
   Entry Point:  30008000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

Starting kernel ...

undefined instruction
pc : [<30008018>]          lr : [<310117bc>]
sp : 30fcfa78  ip : 30fcffb8     fp : 00000000
r10: 00000001  r9 : 30fcfe18     r8 : 30fcffdc
r7 : 31012ef4  r6 : 33000040     r5 : 31019514  r4 : 31019511
r3 : 30008000  r2 : 30000100     r1 : 0000016a  r0 : 00000000
Flags: nzCv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...

and it keeps on resetting. We further reduced the SDRAM frequency to 45 Mhz, but still the problem persist. Is it still the problem with the u-boot frequency or with the linux kernel?

Thanks again.
Tiju






      Save all your chat conversations.. Find them online at http://in.messenger.yahoo.com/webmessengerpromo.php
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.denx.de/pipermail/u-boot/attachments/20080407/bff87b70/attachment.htm