On 07/20/2011 12:27 AM, Hamo wrote:
Thanks. Since we want to make use of the romstage code, we need a CPU that supports boot from SPI or Nor Flash (because we need to run code in the rom) and a board that has a SPI or Nor Flash on it.
There are ARM boards around that use a SPI or NOR flash to store the init and bootloader but most new boards and tablets store it in NAND or eMMC with support for SD Card, serial or USB boot as well. The boot device order is set by pin straps. If the cpu doesn't see a boot string it will scan the next peripheral port until it finds one.
http://www.mini-box.com/mini2440v2 is an old ARM9 dev board that is still readily available the uses a 2MB NOR Flash for init and bootloader. Most ARM systems that will make use of coreboot won't have a separate SPI or NOR flash to hold the init and bootloader. But you have to start somewhere. We'll just have to make this work from on-board NAND, eMMC or SD Card later.
-Bari