RE: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)

["Guy Zana" <guy@xxxxxxxxxxxx>]

Yes, I see it, robios copies just the entry point (but not the structures).

I think the tables should be copied to >0xf0000 as well.

 

I encountered an implementation which maps 0xf0000 (and nothing below that...)

 

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From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx]
Sent: Tuesday, November 13, 2007 5:38 PM
To: Guy Zana; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)

I?ll have to double check, but I think that rombios picks up the smbios tables from 0xe9000 and copies them into the valid range. We do it that way because only rombios knows the memory layout 0xf0000-0xfffff.

 -- Keir

On 13/11/07 15:23, "Guy Zana" <guy@xxxxxxxxxxxx> wrote:

#define SMBIOS_PHYSICAL_ADDRESS       0x000E9000

By the spec it should be somewhere between 0xF0000 to 1MB,
There is even a comment in the code:

/* SMBIOS entry point -- must be written to a 16-bit aligned address
   between 0xf0000 and 0xfffff.
 */
struct smbios_entry_point {
...

Any reason for that?

Thanks,
Guy.

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