AM437x SD boot problem

Guruprasad K

Other Parts Discussed in Thread: AM4377

Hi,

We are doing a custom board based on AM4377 processor.
Our ram same as TI AM437x IDK but size is less.

We need to modify MLO and uboot to change ram configuration and QSPI pinmux.
So can you please tell us where the MLO code in located in the ti-boot.

Please can you share us the latest souce code link of ti-uboot supporting QSPI boot.
Please reply as soon as possible

Best Regards,

Guruprasad K

over 11 years ago

0 Yordan Kovachev over 11 years ago

TI__Guru**** 161600 points

Hi,

Guruprasad K said:
So can you please tell us where the MLO code in located in the ti-boot.

You could inspect the makefiles in u-boot folder, to understand from which files it is generated. It is mainly the sources in include/configs (board header file); board/ti/am43xx (again board file & pinmux), some sources in arch/arm/cpu/armv7/ etc..

The latest u-boot for AM437x devices can be downloaded from this repository: http://software-dl.ti.com/sitara_linux/esd/processor-sdk/PROCESSOR-SDK-LINUX-AM437X/latest/index_FDS.html

Best Regards,

Yordan

0 Guruprasad K over 11 years ago in reply to Yordan Kovachev

Intellectual 255 points

Hi Yordan,

When we boot the MLO from our custom board we are getting data abort error in MLO code at the address "0x40303A0".
Can you please tell us the cause of the error.
The error occurring only in custom board but not in TI IDK or GP EVM.

Thank You.
Best Regards,
Guruprasad K

0 Yordan Kovachev over 11 years ago in reply to Guruprasad K

TI__Guru**** 161600 points

Hi,

Add a #define debug in include/configs/amm335x_common.h file to enable all debug messages in MLO, this will give you additional information about what the system is trying to load at the pointed address.
As I see it this address is in the download area of the Public RAM memory map, so perhaps this is an error in EMIF/DDR settings.

Best Regards,
Yordan

0 Guruprasad K over 11 years ago in reply to Yordan Kovachev

Intellectual 255 points

Hi Yordan,

Thanks for your reply, we are able to solve booting issue from SD Card. That DDR PLL config issue.

Best Regards,
Guruprasad K

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AM437x SD boot problem