RE: Loading and executing kernel from a non-standard address

Is there a way I can get away with this error? What changes would I have to make??

-Ravi

-----Original Message-----
From: H. Peter Anvin [mailto:[e-mail]] 
Sent: Thursday, March 20, 2003 5:07 PM
To: Chakaravarthy, Ravikumar
Cc: [e-mail]
Subject: Re: Loading and executing kernel from a non-standard address usin g SY SLINUX

[e-mail] wrote:
> I tweaked the SYSLINUX boot loader and kernel to load and execute the kernel from 0x200000 (physical address). However when I try to load the kernel using the SYSLINUX bootloader to an address 0xdf000000(physical address) it doesn't work!!
> I want to know if the following should work.
> 
> 1. Should the syslinux be able to copy to the address DI=(0xdf000000). I think bcopy  function in (SYSLINUX sources) does this.. Though the bcopy is done in the 32-bit mode, SOMETIMES it fails for this physical address). bcopy is called in runkernel.inc.

Yes.

> 2. Will I have any problem in the setup.S code in arch/i386/boot or head.S in arch/i386/boot/compressed because of this copy to 0xdf000000?? At times when it gets past step 1, it fails in malloc in arch/i386/boot/compressed/misc.c. The error it gives in "Memory Error"

Almost certainly.

	-hpa