[U-Boot] [PATCH v4] PXE: FDT: Add support for fdt in PXE

[Tom Rini]

On Fri, Sep 07, 2012 at 11:06:31AM +0530, Chander Kashyap wrote:

> Now DT support is becoming common for all new SoC's. Hence it is better
> to have option for getting specific FDT from the remote server.
> 
> This patch adds support for new label i.e. 'fdt'. This will allow to
> retrieve 'fdt blob' from the remote server. This patch take care for
> the following scenarios.
> 
> The usage of fdt is optional.
> The 'fdt blob' can be retrieved from tftp or can be available locally
> or can be absent.
> 
> If 'fdt_addr_r' environment variable is set and 'fdt' label is defined
> retrieve 'fdt blob' from tftp. 'fdt_addr_r' is then passed along bootm
> command.
> 
> If 'fdt_addr' is set and 'fdt blob' is not retrieved from the tftp pass
> 'fdt_addr' to bootm command. In this case 'fdt blob' will be available
> at 'fdt_addr'.
> 
> If 'fdt_addr' is not set and 'fdt blob' is not retrieve from tftp pass
> NULL to boot command. In this case 'fdt blob' is not required and absent.
> 
> Signed-off-by: Chander Kashyap <chander.kashyap at linaro.org>
> ---
> Changes in v2:
> 	- Removed the duplicate code.
> changes in v3:
> 	- Added documentation for "fdt" lable in doc/README.pxe
> changes in v4:
> 	- Added New environment variable 'fdt_addr_r' for 'fdt blob'
> 	- Add more descriptive documentation for the 'fdt' retrieval.
> 
>  common/cmd_pxe.c |   39 ++++++++++++++++++++++++++++++++++++---
>  doc/README.pxe   |   14 ++++++++++++--
>  2 files changed, 48 insertions(+), 5 deletions(-)

Looks good to me, Joe can you please pick this up if you're good with
it?  Thanks!

-- 
Tom
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