[LinuxBIOS] #42: Disable SMM on K8 platforms
LinuxBIOS
svn at openbios.org
Fri Nov 10 19:41:06 CET 2006
#42: Disable SMM on K8 platforms
----------------------------------+-----------------------------------------
Reporter: stepan | Owner: stepan
Type: defect | Status: assigned
Priority: major | Milestone: Going mainstream
Component: code | Version: v2
Resolution: | Keywords: SMM, security
Due_close: MM/DD/YYYY | Include_gantt: 0
Dependencies: | Due_assign: MM/DD/YYYY
Patchstatus: there is no patch |
----------------------------------+-----------------------------------------
Changes (by stepan):
* status: new => assigned
Comment:
SMM is a CPU/Northbridge thing on AMD64 processors. No need to do anything
with the chipset. Check out chapter 6 of the the BKDG at
http://www.amd.com/us-
en/assets/content_type/white_papers_and_tech_docs/26094.PDF
What we _might_ want do though is add a small SMM handler at 38000 but
that is a completely different issue.
SMM_BASE register holds the base of the system management memory region,
and its default value is 30000h. The first SMI handler instruction is
fetched at SMM_BASE + 8000h.
--
Ticket URL: <http://tracker.linuxbios.org/trac/LinuxBIOS/ticket/42#comment:4>
LinuxBIOS <http://www.linuxbios.org/>
More information about the coreboot
mailing list