[U-Boot] uboot imx31 nand boot

[U-Boot] uboot imx31 nand boot

[Nico van Wyk]

Good Day

I am planning on using uboot to boot linux on the imx31.

The system will be booting from nandflash( making use of micron nand flash using the quasi standard protocol)

I would like to know if i need to create a 1st stage bootloader that executes from the 1st 2k of nandflash that will boot uboot or if
uboot is able to do this (via the nand spl).

If uboot is capable of doing this how do i go about setting up (compile time options) for this or point me to some documentation?

Thank you.
Nico Van Wyk.

[U-Boot] uboot imx31 nand boot

[Magnus Lilja]

Hi

On 2010-10-14 12:17, Nico van Wyk wrote:
> Good Day
> 
> I am planning on using uboot to boot linux on the imx31.
> 
> The system will be booting from nandflash( making use of micron nand flash using the quasi standard protocol)
> 
> I would like to know if i need to create a 1st stage bootloader that executes from the 1st 2k of nandflash that will boot uboot or if
> uboot is able to do this (via the nand spl).
> 
> If uboot is capable of doing this how do i go about setting up (compile time options) for this or point me to some documentation?

U-boot is capable of this. The i.MX31 PDK board, which is in the u-boot tree, does this. 

Note 1: The PDK board hasn't been updated to the new ARM relocation code yet so you have to define CONFIG_SYS_ARM_WITHOUT_RELOC in the config file.

Note 2: Commit http://git.denx.de/?p=u-boot.git;a=commitdiff;h=f3bb63a304c4e76010a2a4e99da61f7b6ffffc77 broke support for booting from 8 bit NAND devices. The PDK board uses 16 bit NAND bus and works.


Regards, Magnus Lilja