topic Re: Could NAND firmware be put in Block-0? in i.MX RT Crossover MCUs

Could NAND firmware be put in Block-0?

BlackTurbo — Thu, 20 Oct 2022 09:57:40 GMT

When RT boot firmware from RAW NAND, you need to place FCB in the first block (block 0), then could the firmware be placed in block 0 either? The firmware size is approx. 30kB.

Re: Could NAND firmware be put in Block-0?

jay_heng — Fri, 21 Oct 2022 02:28:30 GMT

No, Block-0 is only for FCB0, Firmware cannot be placed in block-0, it is limitation in BootROM.

See detailed info in my blog (It is in chinese)

https://www.cnblogs.com/henjay724/p/9173425.html

Re: Could NAND firmware be put in Block-0?

BlackTurbo — Fri, 21 Oct 2022 02:19:53 GMT

Ok, thanks, then if I put multiple firmware copies in NAND from block-1 (e.g. block-1 for the first copy, block-2 for the second copy), is there a guide document I can refer to implement it?

Re: Could NAND firmware be put in Block-0?

jay_heng — Tue, 25 Oct 2022 01:01:41 GMT

There is no detailed doc on this, but you can try below tool to test this case

https://github.com/JayHeng/NXP-MCUBootUtility

Re: Could NAND firmware be put in Block-0?

BlackTurbo — Mon, 07 Nov 2022 04:54:39 GMT

Thanks.

Could you tell me some details on how the BootROM work to recognize the bad block and then skip over the first firmware to load the backup firmware? Is there a method that I can verify this function can actually work?

@jay_heng