[coreboot] LPCflasher Wiki Page

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Thu Nov 20 23:20:11 CET 2008

On 20.11.2008 23:07, Peter Stuge wrote:
> Carl-Daniel Hailfinger wrote:
>>>> You need to implement a LPC protocol layer inside flashrom to
>>>> do this.
> Find an lmilk/wmilk tarball and translate the C++ code. Or maybe make
> a plugin system for flashrom using some kind of IPC. Pipes, shared
> memory, etc.
> They drove the milksop and cheaplpc. The cheaplpc code I hinted at
> also does exactly this already.

I'll take a look in a week or so. Joseph, if you find time before that,
please go ahead.

>> What's the license of that software?
> lmilk/wmilk is GPL. cheaplpc.com software I don't know, I didn't
> download it.
>> My suggestion for these external flashers would be to specify the
>> name of the host/programmer like "--host=lpcflasher" and possibly
>> "--interface=/dev/lp0".
> I'd like to counter with --master or --plugin. --host could imply
> networking and the term on LPC as well as SPI for something doing
> what the external hardware is doing here is a bus master.

--master is a good idea.

> Parallell port abstraction is needed somewhere because every system
> does this differently. lmilk/wmilk already has that. I don't expect
> /dev/lp0 to be usable, if that exists then the kernel printer driver
> has already claimed the port. But maybe /dev/parport0 can work, or
> you do what lmilk does and simply program the port with OUTB/INB.

OUTB/INB may need root privileges and may not work with USB->LPT
converters. Your point about a parallel port abstraction layer is valid,



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