[coreboot] What is the difference between fadt rev 3 and rev 1

[Gregg Levine]

On Fri, Jan 21, 2011 at 10:33 AM, Scott Duplichan <scott at notabs.org> wrote:
> -----Original Message-----
> From: coreboot-bounces at coreboot.org [mailto:coreboot-bounces at coreboot.org] On Behalf Of Bao, Zheng
> Sent: Friday, January 21, 2011 02:53 AM
> To: coreboot at coreboot.org
> Subject: [coreboot] What is the difference between fadt rev 3 and rev 1
>
> ]Hi,
> ]My bimini board now can boot linux to login, with the sb800 code in
> ]trunk. But I have to change the fadt->revision to 1. I am so confused.
> ]Why this field can affect my linux booting. If I have to change it back
> ]to 3, what else should I do to make it run correctly?
> ]
> ]Attachments are the dmesg of 2 cases.
> ]
> ]Zheng
>
> Hello Zheng,
>
> Sorry about the FADT trouble. I believe this is the reason the version was changed:
>
>   ----------
>   Running a checked build of Windows is needed for understanding
>   its various BIOS related BSODs. Win7 checked build complains
>   when running coreboot+seabios:
>
>   FADT revision inconsistent with length.
>       Revision:        0x1
>       Length:          0xf4
>       Expected Length: 0x74
>
>   The following patch solves the problem. Tested on Mahogany_fam10 only.
>   ----------
>
>
> The 3.0 version of FADT adds a few new items to the end of the version
> 10. FADT:
>
> reset_reg
> reset_value
> x versions of address fields for supporting 64-bit addresses.
>
> The two log files show more differences that the FADT reset
> field would explain, it seems like. Is the FADT revision the
> only difference in the two coreboot builds?
>
> Thanks,
> Scott
>
>
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>

Hello!
Scott I must say this is great work so far. But what is this "checked
build of Windows 7" you are working with here? What does it do
differently say then what this one year old laptop is running?

-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."