[U-Boot] [PATCH 1/3] spl: add ymodem support

Laurence Withers lwithers at guralp.com
Tue Mar 6 23:28:46 CET 2012

On Wed, Mar 07, 2012 at 12:54:05AM +0400, Mikhail Kshevetskiy wrote:
> We have an omap l138 based board without jtag and empty spi flash.
> UART is an only way to load something on this board, so we are using
> uart to load spl image u-boot and then we are using ymodem to load
> the rest part of u-boot.

Dear Mikhail,

I am asking mainly out of curiousity, rather than giving feedback on the
patch, but the OMAP-L138 boot ROM has the capability to load both SPL and
U-Boot into empty SPI flash using the UART and sfh program or equivalent.
(sfh is "serial flash host" for those following along, a program to talk to
the boot ROM over the UART and download some code that the boot ROM can burn
into SPI flash).

What is the advantage in allowing the SPL to flash U-Boot also?

Many thanks, and bye for now,
Laurence Withers, <lwithers at guralp.com>                http://www.guralp.com/
Direct tel:+447753988197 or tel:+443333408643               Software Engineer
General support queries: <support at guralp.com>         CMG-DCM CMG-EAM CMG-NAM

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