[U-Boot-Users] [PATCH] MPC8360EMDS lowboot option

Kumar Gala galak at kernel.crashing.org
Fri Dec 1 06:56:43 CET 2006

On Nov 30, 2006, at 10:26 PM, Jerry Van Baren wrote:

> Dave Liu wrote:
>> On Thu, 2006-11-30 at 22:45 -0500, Jerry Van Baren wrote:
>>> Hi Dave Liu,
>>> The following patch adds a configuration to do "low  
>>> boot" (HRCW.BMS = 0)
>>> as well as "high boot" (HRCW.BMS = 1).
>>> Many people, myself included :o) prefer to boot out of low  
>>> memory.  It
>>> has an added benefit that, if you screw up the image of of u-boot  
>>> in low
>>> memory, you can switch SW9.3 FCFG and boot using the BCSR, which  
>>> "high
>>> boots" (assuming you smart enough to keep a valid u-boot image at
>>> 0xFFF00000).
>> The 8360EMDS u-boot is booting at low memory in default now. You can
>> change it for high memory.
>>> The patch is against the top of the denx.de repository (thanks,
>>> Wolfgang, for pulling the fsl patches).
>> Thanks Wolfgang and Stefan for pulling them.
> Yes, if the board is not configured as a PCI slave.  I forgot to  
> ask, is
> that a hardware restriction or is it OK to "boot low" as a PCI slave
> (mostly curious)?

You can boot low as a PCI slave, no HW restriction.

- k

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