Hi All,
Thanks a lot for posting the comments here.
(1) I have added some printascii() statements in function
init/main.c/start_kernel() to trace the boot sequence
(a) printascii() to print the command line arguments
(b) printascii() before doing the console_init()
(c) printascii() after doing the console_init()
(2) The log (posted below) suggests that the boot sequence goes beyond
console_init(). Since console_init is done I would expect that all my printk
messages should start to appear on the console . But it does not. (however
the printascii still works, as you can see messages in the bootlog, hence I
would assume that hardware is fine)
I would appreciate if you can give some suggestion on how to debug this
issue further.
Thanks,
kunal
/************* HERE IS THE BOOT LOG ****************************/
run devboot
TFTP from server 10.0.0.1; our IP address is 10.0.0.3
Filename '/home/kunal/xcaster/ingenient-bsp/images/uImage'.
Load address: 0x82000000
Loading: #T ################################################################
#################################################################
#################T ################################################
##################################################################
###################T ##########T
####################################
##########################################T ####
done
Bytes transferred = 1898780 (1cf91c hex)
## Booting image at 82000000 ...
Image Name: Linux-2.6.32-rc2-davinci1
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1898716 Bytes = 1.8 MB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
OK
Starting kernel ...
Uncompressing
Linux...........................................................................................................................
done, booting the kernel.
console=ttyS0,115200n8 root=/dev/nfs rw
nfsroot=10.0.0.1:/home/kunal/xcaster/ingenient-bsp/rootfs/fs,udp,v3,rsize=4096,wsize=1400
ip=10.0.0.3:10.0.0.1:10.0.0.1:255.255.255.0:XCASTER5000::off mem=128M
mtdparts=davinci-nand.0:96k(ubl),736k(uboot),64k(uboot-env),2m(kernel),61568k(app)
eth=80:4C:EF:54:87:0A
doing console init now
finished console init
/***************************************************************/
On Thu, Sep 30, 2010 at 6:26 PM, Raffaele Recalcati
<[email protected]>wrote:
> On Thu, Sep 30, 2010 at 2:35 PM, kunal singh <[email protected]>
> wrote:
> > Hi Raffaele,
> >
> > Thanks for the suggestion.
> >
> > (1) Console is fine. I am able to communicate with the u-boot
> (115200,n8).
> > Also if I use printascii (a kernel function) I am able to output on
> console.
> > (2) There is no message, after the kernel decompression (because console
> is
> > not up). Here is what I see.
> >
> > Load address: 0x82000000
> > Loading: ####T ###################T
> > ##########################################
> >
> ##################################################################
> > ######################T
> > ############################################
> >
> #################################################################
> > ###################T
> > ##############################################T ##
> > ######T ########################################
> > done
> > Bytes transferred = 1898828 (1cf94c hex)
> > ## Booting image at 82000000 ...
> > Image Name: Linux-2.6.32-rc2-davinci1
> > Image Type: ARM Linux Kernel Image (uncompressed)
> > Data Size: 1898764 Bytes = 1.8 MB
> > Load Address: 80008000
> > Entry Point: 80008000
> > Verifying Checksum ... OK
> > OK
> >
> > Starting kernel ...
> >
> > Uncompressing
> >
> Linux...........................................................................................................................
> > done, booting the kernel.
> >
> > /* AND THEN NOTHING BECAUSE CONSOLE IS NOT FUNCTIONAL, but booting goes
> on
> > */
>
> How can you say that boot goes on?
> Can you check mem inside bootargs?
> For instance I have 128MB RAM and I use these bootargs.
>
> set bootargs 'console=ttyS0,115200n8 rw
> ip=10.39.10.183:10.39.10.169:10.39.8.1:255.255.248.0:::off
> root=/dev/nfs nfsroot=10.39.10.169:/home/NFS/ARAGO_DEMO_IMAGE-raf/
> mem=128M video=davincifb:output=lcd:format=rgb:vid0=240x...@0
> ,0:vid1=240x...@0,0:osd0=240x...@0,0:osd1=240x...@0,0
> '
>
> Don't copy my bootargs, only do some tests.
> I saw your behaviour when mem was wrong.
>
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