i.MX Processors中的主题 NAND Flash System Boot Flow

NAND Flash System Boot Flow

KrishnaPavan — Tue, 11 Oct 2011 12:46:24 GMT

Can you give me information related to the NAND Flash .... System Boot Flow in i.MX53

Any documents/// presentation documents, prepared notes etc., if available please give a link or you can send me through e-mail.

I am newbie & I would like to get some information related to it.

So, Please try to get me the docs. Thanking You ..... Krishna Pavan

Re: NAND Flash System Boot Flow

hake — Tue, 18 Oct 2011 09:10:39 GMT

MX53 QS board does not support NAND boot. other MX53 board like SMD support this.

Re: NAND Flash System Boot Flow

KrishnaPavan — Tue, 18 Oct 2011 10:56:42 GMT

O.K......... thankyou for the reply, but i need the NAND Flash System Boot Flow... Say for SMD Board.

It might be any i.MX5XX series processor.

Re: NAND Flash System Boot Flow

hake — Tue, 18 Oct 2011 11:30:07 GMT

sorry, just check the status, the SMD board does not support NAND boot either, only very old board supports, we call it EVK. You can find the related document in ATK documents, but in recent release, those are gone.

Re: NAND Flash System Boot Flow

hake — Tue, 18 Oct 2011 12:00:39 GMT

if you have board with nand. you can run below command line to burn uboot

kobs-ng init --chip_0_device_path=/dev/mtd0 u-boot.bin

Re: NAND Flash System Boot Flow

KrishnaPavan — Tue, 18 Oct 2011 13:02:41 GMT

Thank You @ hake huang.

But, I just wanted to know the details like,

the code will be placed @ 8K , and RAM will be used accordingly etc etc,.......

Which I dont understand...So, I just wanted to know about the NAND System Boot Sequence...

Re: NAND Flash System Boot Flow

hake — Wed, 19 Oct 2011 01:48:28 GMT

briefingly,

ROM will read the code from NAND, (there is a redundant function, just for multiple boot backup), the RAM address will be configured in uboot config, which is the same as other bootm.

as to NAND storage which 8k, it is a little bit complex, you can either read the kobs code, or use nanddump. We have no document for this, as we expect users can use as is.

Re: NAND Flash System Boot Flow

VladanJovanovic — Thu, 20 Oct 2011 08:00:22 GMT

i.MX51 boot flow is described only briefly in the ref. manual. For details, you should check with your local FAE (either distributor or Freescale).

However, it is largely the same as what happens in i.MX53, and details for that are described in Chapter 7 of i.MX53 Reference Manual.

vladan

Re: NAND Flash System Boot Flow

KrishnaPavan — Thu, 20 Oct 2011 09:03:27 GMT

O.K Thank you, Vladan Jovanovic.I have referred those chapters and got some information.

However I have one question.

If an SD Card is used then each block on that is 512Bytes and so we will give 8192 as primary partition.

So, then If I use 2GB NAND Flash on i.MX51, then what is the size of each block on that NAND Flash & What is the size to be allotted for the primary partition.

Re: NAND Flash System Boot Flow

VladanJovanovic — Thu, 20 Oct 2011 09:37:06 GMT

I believe block and page sizes are NAND specific, so you should check the NAND datasheet for specifics. Most commong sizes are 512B/2K/4K.

Vladan