Commit Graph

3 Commits

Author SHA1 Message Date
Jordan Justen c90e37b503 OvmfPkg: Add platform specific reset vector code for X64
KVM has a bug that prevents using page tables in the ROM if the ROM
region utilizes the KVM READONLY memory feature. Therefore, we
avoid using page tables stored in the ROM.

Since OVMF doesn't require memory initialization, we just build
page table entries in RAM at 0x80000 very early in the OVMF boot
process. This address is just after the 'temp RAM' which is set
up by the SEC module.

Currently we only set up 4GB of page tables for OVMF's PEI,
but DxeIpl will build identity mapped page tables that cover all
of the available processor physical address space.

Reported-by: Gary Ching-Pang Lin <glin@suse.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14715 6f19259b-4bc3-4df7-8a09-765794883524
2013-09-24 18:23:20 +00:00
geekboy15a d79d2cd2ce Updated OvmfPkg to use the reset vector binary from the UefiCpuPkg. Removing local reset vector files.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9912 6f19259b-4bc3-4df7-8a09-765794883524
2010-02-02 18:05:03 +00:00
jljusten 49ba9447c9 Add initial version of Open Virtual Machine Firmware (OVMF) platform.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8398 6f19259b-4bc3-4df7-8a09-765794883524
2009-05-27 21:10:18 +00:00