[U-Boot] [PATCH] arm/da850 : [RFC] add bootdsp to cmd_elf

[Tom Rini]

On Mon, Jan 27, 2014 at 05:28:22PM +0100, Paul Chavent wrote:

> On platform with a DSP co-processor, add a command to boot an elf on
> it.
> 
> * Test *
> 
> This patch has been tested on an OMAP-L138 EVM with DSP code generated
> with TI's code generation tools 7.4.6 with the --abi=eabi option.
> 
> * Bugs *
> 
> Some elf generated with older TI's cgt have mis-aligned header
> sections that lead to u-boot freeze. This point can be checked with
> readelf (see "Start of program headers" and/or "Start of section
> headers") if you experience such problem.
> 
> * Discussion *
> 
> Our first question is about the interest of the u-boot community for
> this feature ?
> 
> For the implementation, we tried to separate platform specific code
> (dsp's reset and entry point) from the elf generic code (check and
> load elf in memory). We would like to have your opinion on this
> design.
> 

This seems like the right direction to take for things.  The question I
have first is, are we talking about loading something into the DSP and
then letting it go, or are we talking about getting a result back from
the DSP in Linux?  I assume the first case.

-- 
Tom
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