flashing xload to nand flash from uboot

haihua li

Now the board can boot up with the nand flash,then i want flashing a new xload image into the flash from uboot command.but it can't work.here is my steps:

1. Make a x-load.bin image in ubuntu,just add some printf() function to indicate the change.

2. Signing the image by signGP tools into x-load.bin.fit.

3. Download the image to ddr memory in certen area,erase the flash,write flash,all complished with success.of cause,flashing area is 0x0~0x80000.

4. Re-Power the board,it can't work.

what's wrong?

I compared x-load.bin with x-load.bin.fit,which is signGP's product,they only have a bit different in the head of file by 8bytes.see the picture.Is the difference is right? I mean the translated file by signGP tool is right??

over 13 years ago

0 Cvetolin Shulev-XID over 13 years ago

TI__Guru 65405 points

Hi Haihua,

In general the steps which you execute are correct. I would like to ask you are you renaming the x-load.bin.ift to MLO between steps 2 and 3.

I recommend you to try the following scenario for flashing the MLO to NAND:

http://processors.wiki.ti.com/index.php/AM335x_U-Boot_User%27s_Guide

Tsvetolin Shulev

0 haihua li over 13 years ago in reply to Cvetolin Shulev-XID

Prodigy 160 points

Hi,these days i tried a lot to flashing the xload to nand,the stepis as the same as i firstly mentioned,and that's correct.

I add some messages in the xload,it seems works correct.

but,the other problem is: can't add printf messages in the nand_init() functions,otherwise,it wouldn't work.

That's too strange,i only add "printf("xxxxxx\n")" in the funciton;when delete this message,it work well.

someone who can explain it ?

0 Cvetolin Shulev-XID over 13 years ago in reply to haihua li

TI__Guru 65405 points

Hi Haihua,

As you can see in the original x-loder sources that the printf function is called only if the CFG_PRINTF macro is defined. You can check whether this macro is defined in the omap3evm.h file and check for implementation for serial console initialization in the serial.c file. If both conditions are performed the printf should be work correctly.

Tsvetolin Shulev

Processors

Processors forum

flashing xload to nand flash from uboot