On Mon, Jun 2, 2014 at 4:03 AM, Andy Ng andreas2025@gmail.com wrote:

I have an imx6 solo system and currently I am using the SD card to boot the u-boot. I would like to make it boot from NAND, but my first Block in NAND is a bad one. Do I need u-boot with NAND SPL support?

Best regards Andy

Andy,

You only need NAND SPL support if the board you are booting uses an SPL bootloader. The benefit of using SPL is really to allow mutliple board configurations to be supported in a single bootloader (mostly by configuring pinmux and SDRAM controller dynamically for IMX6DQ vs IMX6SDL SoCs).

In general to 'boot' from NAND on IMX6 you need to use the kobs-ng tool (source distributed with Freescales IMX BSP) to flash the bootstream to the NAND in a way that is compatible with the internal IMX BOOT ROM. Note that this also depends on eFUSE configuration and/or board strappings specifing that the BOOT ROM should boot from NAND. If all this is done, then having a bad block at the beginning is not an issue, as the IMX BOOT ROM and kobs-ng allow for some redundancy there.

What board are you working with and what bootloader tree?

Tim