Other NXP Products中的主题 Re: iMX31 boot problem

iMX31 boot problem

BENN — Mon, 23 Apr 2007 16:36:54 GMT

Hi,
I have problem with linux booting on board iMX31. I'm using LTIB pack from freescale webpage. Installation and compilation the pack was without problem. After downloading is printed "Uncompressing Linux.......done, booting the kernel." and its all. I trayed both version LTIB imx31ads_20060709 and imx31ads_20070128 and effect is same.

I find that R1 (there is stored machine number) is wasted in macro ENABLE_L2_CACHE in file "proc-v6.S". Next problem is in MMU enabling.

I tested this linux on board IMX31ADS, now I have LITEKIT with patch for this kit.

I must doing something wrong. Patches and config file using from LTIB. Only for LITEKIT I disable USB, video, sound, network etc in config and enable support for LITEKIT.

Who has this kit and linux booting without problem, please write here your experience.

Thanks BENN.

Re: iMX31 boot problem

RAMnAG — Thu, 03 May 2007 16:32:01 GMT

we do have same problem . its bcos it is unable mount rootfs. without giving CMD configuration at redboot prompt like

redboot>exec -b 0x.... -l 0x.... -c "noinitrd root=/dev/root rootfstype=jffs2......"

give these detalis in kernel default config file at CMD_CONFIG and build the kernel then it will be able mount rootfs.

best of luck

Re: iMX31 boot problem

mvniekerk — Mon, 18 Aug 2008 20:31:31 GMT

Please let me know if you've got this working. I also traced the assembly code to __enable_mmu in the Linux kernel startup and the machine just dies after that (also an iMX31ADS-based board).

Re: iMX31 boot problem

IMX31 — Thu, 11 Sep 2008 17:47:50 GMT

Hello Benn,

I am also facing same problem, we did everything, still its failing in custom board.

For low frequency its getting un-compressed. But memory test is PASS for 133MHz.

We are worried, then why Uncompress at 133Mhz is failing.

thanks & regards
ragh

Re: iMX31 boot problem

CrasyCat — Wed, 07 Jul 2010 13:33:29 GMT

This discussion was moved to a better location.