[LinuxBIOS] A boot problem....

Ken Fuchs kfuchs at winternet.com
Thu Jul 28 18:50:20 CEST 2005

> > On Wed, 27 Jul 2005, Huang-Jen Wang wrote:

> > > Excuse me , this is my first time porting....do you tell me more
> > > detail..
> > > like need what information or which file need to modify...

> * Ronald G. Minnich <rminnich at lanl.gov> [050727 18:30]:

> > you're not getting clock IRQ, which is usually IRQ 0. you need to
> > see how your interrupt hardware and/or clock is working to create
> > interrupts.

On 7/28/05, Stefan Reinauer <stepan at openbios.org> wrote:

> Usually you have to correct your pirq and mptable (or ACPI tables, if
> available) (Check the APIC entries in your mptable, as a first try)

In my previous post, I mentioned a good way to proceed is booting from
the commercial BIOS and running LB util/getpir to view the PIRQ table
and compare it to the irq_table.c of the LinuxBIOS being booted.

To check the MP table, boot the COTS BIOS & Linux and run LinuxBIOS
util/mptable which will generate an mptable.c file on stdout.  Compare
this code to the actual mptable.c code in the LinuxBIOS that caused
the boot problem.  (The code that util/mptable generates must be hand
edited to work under LinuxBIOS v2, so some differences should exist.)

Please note that some people consider running either util/getpir or
util/mptable to be a waste of time.  (I agree; Maybe these utilities
could be fixed so they would be more useful on LinuxBIOS v2.)

Hope this helps.


Ken Fuchs <kfuchs at winternet.com>

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