OMAPL138 : kernel works on TMDXOSKL138-E and NOT on TMDSEVML138

Robert CHOLAY

Other Parts Discussed in Thread: OMAP-L138

Hello,

I built an Arago image (uImage + U-Boot) and I flashed this U-Boot generated on the 2 board TMDSEVML138 and TMDXOSKL138-E.
But the kernel generated works on the TMDXOSKL138-E and NOT on the TMDSEVML138.

On the TMDSEVML138 board (one that does not work), I have nothing after "Uncompressing Linux... done, booting the kernel".

I checked that the kernel has been built with the correct MACH_TYPE_DAVINCI_DA850_EVM=2157.

I also try with the kernel Linux provides with the TMDSEVML138 package (only the kernel, the U-Boot was still this one I have generated) : the kernel boots and works.

Can someone help me about the dirrerences between these 2 boards please?

over 14 years ago

0 Norman Wong over 14 years ago

Guru 26430 points

A possibility. TMDSEVML138 is a newer version of TMDXOSKL138-E. It may have a newer OMAP-L138. The older Linux kernels don't recognize the newer OMAP-L138. This post by "TME - GJ" details what to look for:

http://e2e.ti.com/support/embedded/f/354/t/118712.aspx

The Linux kernel provided with the board may have been already patched.

0 Sudhakar Rajashekhara over 14 years ago in reply to Norman Wong

TI__Expert 5170 points

Hi,

Contents of DEVIDR0 register (at address 0x01C14018) may be different between the two chips. Read the contents of this register and add it accordingly in the "davinci_id" structure in arch/arm/mach-davinci/da850.c file. See line No. 968 of http://arago-project.org/git/projects/?p=linux-davinci.git;a=blob;f=arch/arm/mach-davinci/da850.c;h=5e13f88018eec9a8d6d10533d247915818e668df;hb=3de4d5ce8b8abba1d7cd753c00516c2353596c24.

Regards, Sudhakar

Processors

Processors forum

OMAPL138 : kernel works on TMDXOSKL138-E and NOT on TMDSEVML138