topic Re: Imx27-ADS Problem booting Linux in Other NXP Products

Imx27-ADS Problem booting Linux

Aleem — Wed, 12 Mar 2008 18:35:40 GMT

Dear All,

I downloaded BSP ( imx27_ads_20071219-rel3-ltib ) and built the environment and did ./ltib
and i download zImage throung serial. Please see log.
Kernel does not boot up.
___________________________________________________
RedBoot> load -r -b 0x100000 -m xmodem
CC Raw file loaded 0x00100000-0x0029254b, assumed entry at 0x00100000
xyzModem - CRC mode, 12875(SOH)/0(STX)/0(CAN) packets, 2 retries
RedBoot> run 0x100000
load entry_address=0x100000
virt_addr=0x100000
phys_addr=0xa0100000
_____________________________________________________

I am trying to boot it up by downloding it into RAM. Is it necessary to flash it to boot up?
Please help me in the booting process.

Thanks and Regards,
Aleem

Re: Imx27-ADS Problem booting Linux

phenck — Wed, 12 Mar 2008 22:29:36 GMT

Don't you forget the image name?
load -r -b 0x100000 zImage

Then I advice you to launch the kernel with the exec command because you will to give arguments to the kernel, don't you?

Best Regards
P. Henck

Re: Imx27-ADS Problem booting Linux

aurelihein — Thu, 13 Mar 2008 15:33:49 GMT

Hi,
What you can do is that :
load -r -b 0x100000 -h 192.168.49.173 /tftpboot/zImage
exec -c "console=ttymxc0 root=/dev/mtdblock2 rootfstype=jffs2 rw init=/linuxrc ip=none"
Regards,
Aurelien

Re: Imx27-ADS Problem booting Linux

Aleem — Thu, 13 Mar 2008 22:01:48 GMT

Dear Aurelien,

Thansk you very much for your help i was able to download zImage
through TFTP. please see this message.
But after i give exec i dont get any thing. Kernel does not boot up.
Can you please guide me what could be the problem.
_________________________________________________________
RedBoot>
RedBoot> load -v -r -b 0x00100000 zImage
Using default protocol (TFTP)
-
Raw file loaded 0x00100000-0x0029254b, assumed entry at 0x00100000
RedBoot>
RedBoot> exec -c "console=ttymxc0 root=/dev/mtdblock2 rootfstype=jffs2 rw init=/
linuxrc ip=none"
entry=0xa0008000, target=0xa0008000
Using base address 0x00100000 and length 0x0019254c

__________________________________________________________

Thanks in Advance,
Aleem

Re: Imx27-ADS Problem booting Linux

jchokshi — Wed, 13 Aug 2008 04:16:46 GMT

Greetings,

I've a similar problem albeit I'm using i.MX 27-ADS.

I am issuing following command,

exec -b 0x00100000 -l 0x00200000 -c "noinitrd console=ttySo,115200n8

root=/dev/nfs nfsroot=<Host IP>:/tftpboot/ltib/ init=/linuxrc

ip=<Target IP>:<Host IP>"

o/p:

entry=0xa0008000, target=0xa0008000

And Serial terminal hangs forever, but I get to see boot messages on attached LCD display panel. I was even able to type and see characters on LCD through attached keyboard. But I believe we need a way to get into File System on Target, and serial connection seems to be only viable option.

So If you could let me know how I can keep the serial connection alive, having issued the "exec...." command.

Thanks,

Jaydeep