linux-kernel - Re: x86 embedded - Problem getting past 'move compressed kernel before decompression'

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Message-ID: <d66caabb1002211451s5a68565fue6096e17b99402f7@mail.gmail.com>
Date:	Mon, 22 Feb 2010 09:51:09 +1100
From:	Graeme Russ <graeme.russ@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: x86 embedded - Problem getting past 'move compressed kernel 
	before decompression'

On Sun, Feb 21, 2010 at 4:53 PM, H. Peter Anvin <hpa@...or.com> wrote:
> On 02/20/2010 09:45 PM, H. Peter Anvin wrote:
>
> Make that:
>
>        asm volatile(
>                "movl   %2, %%ds\n" \
>                "movl   %2, %%es\n" \
>                "movl   %2, %%fs\n" \
>                "movl   %2, %%gs\n" \
>                "movl   %2, %%ss\n" \
>                "xorl   %ebp, %ebp\n" \
>                "xorl   %ebx, %ebx\n" \
>                "ljmpl  $0x10,$0x100000"
>         : : "S" (&boot_params), "D" (0), "r" (0x18));
>

Thanks Peter - I gave that a try but no luck. I am in the process of
writing some routines which will dump the contents of the registers
upon entering startup_32 and the relocation jump address prior to
the jump.

My assembler is a bit rusty, so it is taking a bit of time

What other information should I dump?

Regards,

Graeme
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