Can I read boot data from a nand flash attached to a Divinchi processor

mans

Other Parts Discussed in Thread: AM3874

I read several documentation which explains how to write to NAND falshes on EVM board. but I did not find any document on how to rad data from nand flash. Is there any way that I can read boot data from a nand flash attached to a Divinchi procesor?

over 12 years ago

0 Pavel Botev over 12 years ago

TI__Guru**** 170625 points

Hello,

Did you check in the TI81XX_PSP_U-Boot.pdf ?

Reading from Nand
To read len bytes of data from NAND block at a particular offset to the memory buffer in DDR located at addr:
TI8168_EVM# nand read <addr> <offset> <len>
If a bad block is encountered during the read operation, it is skipped and the read operation continues from next 'good' block.
For example, to read 0x40000 bytes from NAND - starting at block 32 (offset 0x400000) to memory buffer at address 0x80000000:
TI8168_EVM# nand read 0x80000000 0x400000 0x40000

Regards,

Pavel

0 Renjith Thomas over 12 years ago

Guru 31670 points

Mans,

Use "nand read 0xaddr 0xoffset 0xsize" command from u-boot to read from whichever NAND 0xoffset you want. This is will read the data to 0xaddr specified according to the 0xsize given

0 mans over 12 years ago in reply to Pavel Botev

Expert 1005 points

Thanks

What is the setup for this? Should I attached the board to JTAG and then use UBOOT?

I am newbie in EVM and TI Linux so I am trying to find my way in the development. Is there any start-up document in this matter? For example a hello world type document for Linux development for TI?

0 Renjith Thomas over 12 years ago in reply to mans

Guru 31670 points

Mans,

Are you following any documentation to setup linux on your board? If not, please follow that and try to get to u-boot command prompt. For this you've to flash the UBL(if required) or u-boot on the board.

Once you have the u-boot prompt, you can try executing the commands mentioned above.

0 mans over 12 years ago in reply to Renjith Thomas

Expert 1005 points

Thanks

No I am not following any document on how to setup my system. I am looking for one, can you please suggets on?

What software/hardware do I need?

0 Renjith Thomas over 12 years ago in reply to mans

Guru 31670 points

Which is your SoC?

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

Guru 31670 points

Check this out.

http://processors.wiki.ti.com/index.php/Category:DaVinci_Linux

0 mans over 12 years ago in reply to Renjith Thomas

Expert 1005 points

It is AM3874

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Can I read boot data from a nand flash attached to a Divinchi processor