[U-Boot] [PATCH 1/2] PBL: add support for boot from SPI flash.

[Kumar Gala]

On Nov 12, 2010, at 5:12 AM, Zang Roy-R61911 wrote:

> 
> 
>> -----Original Message-----
>> From: Gala Kumar-B11780
>> Sent: Friday, November 12, 2010 17:50 PM
>> To: Xie Shaohui-B21989
>> Cc: u-boot at lists.denx.de; Zang Roy-R61911; Lan Chunhe-B25806; Hu
> Mingkai-
>> B21284
>> Subject: Re: [PATCH 1/2] PBL: add support for boot from SPI flash.
>> 
>> 
>> On Nov 12, 2010, at 12:36 AM, Shaohui Xie wrote:
>> 
>>> PBL: SPI flash used as RCW and PBI source, CPC1 used as 1M SRAM
>>> where PBL will copy whole U-BOOT image to, U-boot can boot from CPC1
>>> after PBL completes RCW and PBI phases.
>>> 
>>> To produces the U-boot image which can used by PBL,
> pbl_image_tool.html
>>> is a necessary tool.
>> 
>> (drop this bit about pbl_image_tool.html, I assume this is the RCW
> tool??)
>> 
>>> 
>>> Signed-off-by: Chunhe Lan <b25806 at freescale.com>
>>> Signed-off-by: Mingkai Hu <Mingkai.hu at freescale.com>
>>> Signed-off-by: Shaohui Xie <b21989 at freescale.com>
>>> ---
>>> arch/powerpc/cpu/mpc85xx/cpu_init.c  |   25
> +++++++++++++++++++++++++
>>> board/freescale/corenet_ds/config.mk |   6 ++++++++++
>>> board/freescale/corenet_ds/tlb.c     |    9 +++++++++
>>> boards.cfg                           |    1 +
>>> include/configs/corenet_ds.h         |   31
> +++++++++++++++++++++++++++++--
>>> 5 files changed, 70 insertions(+), 2 deletions(-)
>> 
>> Let's use CONFIG_SPIFLASH like we do on all other boards instead of
>> CONFIG_PBLSPI
> 
> This patch is for PBL boot and is not dedicated to SPI. SD/MMC boot can
> also use it.

in theory NAND as well?

> CONFIG_SPIFLASH can't reflect the boot information.
> How about CONFIG_PBL_BOOT?

hmm, that's better but not quite right.  Since we use PBL even on NOR boot.

Maybe something like CONFIG_PBL_BOOT_INDIRECT??

- k