[coreboot] FW: About the boot steps of the coreboot-V4
Kerry.She at amd.com
Fri Dec 16 10:48:39 CET 2011
> -----Original Message-----
> From: Cui Lei [mailto:neverforget_2002 at 163.com]
> Sent: Friday, December 16, 2011 5:04 PM
> To: She, Kerry
> Cc: coreboot at coreboot.org
> Subject: Re: [coreboot] About the boot steps of the coreboot-V4
> Hi, Kerry
> Thank you for your reply. I find after __protected_start the execution
> will go to the fpu_start (in the fpu_enable.inc), then go to the
> cache_as_ram. Now I have a new problem, on my mainboard , there are
> than 2minutes delay between __protected_start and __fpu_start, but on
> another mainboard(I just change the romsip code in order to run), it
> ok. If I move the fpu_start code to the entry32.inc, the delay will be
> after the __fpu_star
What platform do you use?
Can you provide some information about the mainboard, chipset and rom
With more information in detail, Maybe somebody else can assist.
> > Hello, Rock
> > You may need to have a look at the crt0.S,
> > Take amd/persimmon as an example:
> > #include "config.h"
> > #include "src/arch/x86/init/prologue.inc"
> > #include "src/cpu/x86/32bit/entry32.inc"
> > #include "src/cpu/x86/fpu_enable.inc"
> > #include "src/cpu/amd/agesa/cache_as_ram.inc"
> > #include "mainboard/amd/persimmon/romstage.inc"
> > ~
> > "build/romstage/crt0.S"
> > But I think it's better to learn coreboot by playing with it
> > on a mainboard than just reading the code.
> > thanks
> >> -----Original Message-----
> >> From: coreboot-bounces+kerry.she=amd.com at coreboot.org
> > [mailto:coreboot-
> >> bounces+kerry.she=amd.com at coreboot.org] On Behalf Of Rock Cui
> >> Sent: Wednesday, December 07, 2011 1:19 PM
> >> To: coreboot at coreboot.org
> >> Subject: [coreboot] About the boot steps of the coreboot-V4
> >> Hi all,
> >> I'm learnning the coreboot v4 source code. But when I read the file
> >> entry32.inc, I don't know where the execution will jmp to after the
> >> __protected_start.
> >> I need help.
> >> BRs,
> >> Rock.
> >> --
> >> coreboot mailing list: coreboot at coreboot.org
> >> http://www.coreboot.org/mailman/listinfo/coreboot
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