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RE: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)
- To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
- From: "Guy Zana" <guy@xxxxxxxxxxxx>
- Date: Tue, 13 Nov 2007 11:11:49 -0500
- Delivery-date: Tue, 13 Nov 2007 08:13:44 -0800
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
- Thread-index: AcgmCEj4SVwEbkIUR9iro4itpNXRaQAAtDe4AACw6CA=
- Thread-topic: [Xen-devel] SMBIOS starts at 0xe9000 (out of range)
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...)
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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