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QEMU will automatically fill the video BIOS image into memory at the legacy video BIOS memory location (0xc0000). This code will look there for a EFI option rom image, and load it if it found. This allows the video option ROM to be separated out from the main system firmware image. QEMU does not appear to emulate the PCI rom expansion method for making the video BIOS available to the system. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8942 6f19259b-4bc3-4df7-8a09-765794883524
=== OVMF OVERVIEW ===
The Open Virtual Machine Firmware (OVMF) project aims
to support firmware for Virtual Machines using the edk2
code base. More information can be found at:
https://edk2.tianocore.org/OVMF.html
=== STATUS ===
Current status: Alpha
Current capabilities:
* IA32 and X64 architectures
* QEMU (0.9.1 or later)
- Video, keyboard, IDE, CD-ROM, serial
- Runs UEFI shell
* UEFI Linux has booted (but is not stable)
=== FUTURE PLANS ===
* Stabilize UEFI Linux boot
* Test/Stabilize UEFI Self-Certification Tests (SCT) results
=== BUILDING OVMF ===
Pre-requisites:
* Build environment capable of build the edk2 MdeModulePkg.
* A properly configured ASL compiler
* Intel ASL compiler: Available from http://www.acpica.org
or
* Microsoft ASL compiler: Available from http://www.acpi.info
Update Conf/target.txt ACTIVE_PLATFORM for OVMF:
PEI arch DXE arch UEFI interfaces
* OvmfPkg/OvmfPkgIa32.dsc IA32 IA32 IA32
* OvmfPkg/OvmfPkgIa32X64.dsc IA32 X64 X64
* OvmfPkg/OvmfPkgX64.dsc X64 X64 X64
Following the edk2 build process, you will find OVMF.fd at:
$WORKSPACE/Build/*/*/FV/OVMF.fd
=== RUNNING OVMF on QEMU ===
* QEMU 0.9.1 or later is required.
* Either copy, rename or symlink OVMF.fd => bios.bin
* Be sure to use qemu-system-x86_64, if you are using and X64 firmware.
(qemu-system-x86_64 works for the IA32 firmware as well, of course.)
* Use the QEMU -L parameter to specify the directory where bios.bin
is located.
* If QEMU returns an error about not finding a video bios, you can
try creating an empty copy of the video bios file, or copy the
video bios from QEMU's BIOS directory.
* Optionally you can use the QEMU -serial command to capture the
OVMF debug messages. For example: -serial file:serial.log
* The EFI shell is built into OVMF builds at this time, so it should
run automatically if a UEFI boot application is not found on the
removable media.