omap l137 boot kernel from sd-card

Tom Heckel

Other Parts Discussed in Thread: OMAP-L137, LINUXSDK-OMAPL137

Hello,

I have an omap l137 evm and I want to boot the kernel from the sd-card, but the uboot which works with my board does not support sd-cards from the start. is there already a possibility how I can do this? Perhaps there is a patch or something like that?

Regards, Tom

over 12 years ago

0 Renjith Thomas over 12 years ago

Guru 31670 points

Try building the u-boot mentioned in the link and see whether it works?

http://processors.wiki.ti.com/index.php/Configuring/Building_U-Boot_for_OMAP-L137

0 Tom Heckel over 12 years ago in reply to Renjith Thomas

Intellectual 515 points

Hi, thanks for your reply.

the problem is that the MMC support belongs to the MontaVista based SDK. I have the DaVinci GIT based SDK.

Regards, Tom

0 Renjith Thomas over 12 years ago in reply to Tom Heckel

Guru 31670 points

Use the u-boot from Montavista and Kernel from GIT. It should work easily I believe.

0 Tom Heckel over 12 years ago in reply to Renjith Thomas

Intellectual 515 points

Where can I download a MontaVista based uboot?

Regards, Tom

0 Renjith Thomas over 12 years ago in reply to Tom Heckel

Guru 31670 points

http://www.ti.com/tool/linuxsdk-omapl137

http://downloads.ti.com/dsps/dsps_registered_sw/sdo_sb/targetcontent/psp/mv_lsp_2_20/ga/docs/lsp_2.20_drivers_data_sheet.pdf

0 Tom Heckel over 12 years ago in reply to Renjith Thomas

Intellectual 515 points

Thanks for your reply. Do you know where I can find the source files in which I can see what was changed by MontaVista? Something like the "da830evm.c" file.

I want to know what I need to change so that the sd-card will be found.

Regards, Tom

0 Norman Wong over 12 years ago in reply to Tom Heckel

Guru 26430 points

The Davinci u-boot at the Arago GIT has support for MMC.

http://arago-project.org/git/projects/?p=u-boot-davinci.git;a=tree

I don't know if this is the same as the DaVinci GIT based SDK that you noted. The da850 is capable of and uses SD-Card boot. Compare the files da830.h. and da850.h in the include/configs dirrectory. See MMC related config options. I think the kernel on SD Card option is not common the OMAP-L137 because the RBL doesn't have a SD boot mode. Your DSPUBL, ARMUBL and u-boot will still have to reside on non-SD memory.

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omap l137 boot kernel from sd-card