[U-Boot] Boot reason in SPL for OMAP4

[Tom Rini]

On Wed, Oct 01, 2014 at 12:13:50PM -0700, Gregoire Gentil wrote:
> 
> 
> On 10/01/2014 10:34 AM, Tom Rini wrote:
> >On Tue, Sep 30, 2014 at 10:26:08AM -0700, Gregoire Gentil wrote:
> >
> >>Hello,
> >>
> >>In TI x-loader, the boot reason is copied to a scratchpad 0x4A326000
> >>as shown here:
> >>https://gitorious.org/x-loader/x-loader/source/HEAD:cpu/omap4/start.S#L102
> >>
> >>How can I access the boot reason in u-boot or in the SPL?
> >
> >spl_boot_mode() and spl_boot_device().
> >
> Thank you. Yes, I found the calls. My point is that I need the
> boot_device after SPL and it's not transmitted down the chain. Doing
> the following reestablishes what the legacy x-loader was doing:
> 
> *(volatile unsigned int *)(0x4A326000) = spl_boot_device();
> 
> I think that it's safe as the SRAM is not used after SPL,

It's possibly good enough for your needs, yes.  I had toyed with the
idea of passing this down more formally and generically but hadn't
gotten far.

-- 
Tom
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