X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=OvmfPkg%2FREADME;h=be798063a03edcd4777c2bb2332d3c6d8114a89d;hb=ad43bc6b2e3507187f48e21aa6fc95f4cee222f3;hp=2c8b51fc76bf79e4ec5d397313b730096bd100a9;hpb=bf23b44d926982dfc9ecc7785cea17e0889a9297;p=mirror_edk2.git diff --git a/OvmfPkg/README b/OvmfPkg/README index 2c8b51fc76..be798063a0 100644 --- a/OvmfPkg/README +++ b/OvmfPkg/README @@ -9,8 +9,6 @@ http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=OVMF === STATUS === -Current status: Alpha - Current capabilities: * IA32 and X64 architectures * QEMU (0.10.0 or later) @@ -22,7 +20,6 @@ Current capabilities: === FUTURE PLANS === -* Stabilize UEFI Linux boot * Test/Stabilize UEFI Self-Certification Tests (SCT) results === BUILDING OVMF === @@ -60,12 +57,23 @@ http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=How_to_build_OVM === RUNNING OVMF on QEMU === -* QEMU 0.9.1 or later is required. -* Either copy, rename or symlink OVMF.FD => bios.bin +* QEMU 0.12.2 or later is required. * 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 the bios.bin - file is located. +* Use OVMF for QEMU firmware (3 options available) + - Option 1: QEMU 1.6 or newer; Use QEMU -pflash parameter + * QEMU/OVMF will use emulated flash, and fully support UEFI variables + * Run qemu with: -pflash path/to/OVMF.fd + - Option 2: Use QEMU -bios parameter + * Note that UEFI variables will be partially emulated, and non-volatile + variables may lose their contents after a reboot + * Run qemu with: -bios path/to/OVMF.fd + - Option 3: Use QEMU -L parameter + * Note that UEFI variables will be partially emulated, and non-volatile + variables may lose their contents after a reboot + * Either copy, rename or symlink OVMF.fd => bios.bin + * Use the QEMU -L parameter to specify the directory where the bios.bin + file is located. * 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. @@ -108,31 +116,113 @@ $ OvmfPkg/build.sh -a IA32 -b RELEASE -t GCC45 === Network Support === -To add network drivers to OVMF: - -* Download UEFI drivers for the e1000 NIC - - http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=17515&lang=eng - - Install the drivers into a directory called Intel3.5 in your WORKSPACE - -* Include the drivers in OVMF during the build: - - Add '-D NETWORK_ENABLE' to your build command - - For example: build -D NETWORK_ENABLE - -* Use the QEMU -net parameter to enable NIC support. - - QEMU does not support UEFI DHCP or UEFI PXE Boot, so long timeouts will - occur when NICs are enabled. The long timeouts can be avoided by - interrupts the boot sequence by pressing a key when the logo appears. - - Example: Enable e1000 NIC with a DHCP server and restrict packet - forwarding: - -net nic,model=e1000 -net user,restrict=yes -net user,dhcpstart=10.0.2.10 - - Example: Enable e1000 NIC with a DHCP server, restrict packet forwarding, - and generate PCAP file: - -net nic,model=e1000 -net user,restrict=yes -net user,dhcpstart=10.0.2.10 - -net dump,file=a.pcap - - Example: Enable 2 e1000 NICs with a DHCP server and restrict - packet forwarding: - -net nic,model=e1000,addr=3 -net nic,model=e1000,addr=4 - -net user,restrict=yes -net user,dhcpstart=10.0.2.10 +OVMF provides a UEFI network stack by default. Its lowest level driver is the +NIC driver, higher levels are generic. In order to make DHCP, PXE Boot, and eg. +socket test utilities from the StdLib edk2 package work, (1) qemu has to be +configured to emulate a NIC, (2) a matching UEFI NIC driver must be available +when OVMF boots. + +(If a NIC is configured for the virtual machine, and -- dependent on boot order +-- PXE booting is attempted, but no DHCP server responds to OVMF's DHCP +DISCOVER message at startup, the boot process may take approx. 3 seconds +longer.) + +* For each NIC emulated by qemu, a GPLv2 licensed UEFI driver is available from + the iPXE project. The qemu source distribution, starting with version 1.5, + contains prebuilt binaries of these drivers (and of course allows one to + rebuild them from source as well). This is the recommended set of drivers. + +* Use the qemu -netdev and -device options, or the legacy -net option, to + enable NIC support: . + +* For a qemu >= 1.5 binary running *without* any "-M machine" option where + "machine" would identify a < qemu-1.5 configuration (for example: "-M + pc-i440fx-1.4" or "-M pc-0.13"), the iPXE drivers are automatically available + to and configured for OVMF in the default qemu installation. + +* For a qemu binary in [0.13, 1.5), or a qemu >= 1.5 binary with an "-M + machine" option where "machine" selects a < qemu-1.5 configuration: + + - download a >= 1.5.0-rc1 source tarball from , + + - extract the following iPXE driver files from the tarball and install them + in a location that is accessible to qemu processes (this may depend on your + SELinux configuration, for example): + + qemu-VERSION/pc-bios/efi-e1000.rom + qemu-VERSION/pc-bios/efi-ne2k_pci.rom + qemu-VERSION/pc-bios/efi-pcnet.rom + qemu-VERSION/pc-bios/efi-rtl8139.rom + qemu-VERSION/pc-bios/efi-virtio.rom + + - extend the NIC's -device option on the qemu command line with a matching + "romfile=" optarg: + + -device e1000,...,romfile=/full/path/to/efi-e1000.rom + -device ne2k_pci,...,romfile=/full/path/to/efi-ne2k_pci.rom + -device pcnet,...,romfile=/full/path/to/efi-pcnet.rom + -device rtl8139,...,romfile=/full/path/to/efi-rtl8139.rom + -device virtio-net-pci,...,romfile=/full/path/to/efi-virtio.rom + +* Independently of the iPXE NIC drivers, the default OVMF build provides a + basic virtio-net driver, located in OvmfPkg/VirtioNetDxe. + +* Also independently of the iPXE NIC drivers, Intel's proprietary E1000 NIC + driver (PROEFI) can be embedded in the OVMF image at build time: + + - Download UEFI drivers for the e1000 NIC + - http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=17515&lang=eng + - Install the drivers into a directory called Intel3.5 in your WORKSPACE. + + - Include the driver in OVMF during the build: + - Add "-D E1000_ENABLE -D FD_SIZE_2MB" to your build command, + - For example: "build -D E1000_ENABLE -D FD_SIZE_2MB". + +* When a matching iPXE driver is configured for a NIC as described above, it + takes priority over other drivers that could possibly drive the card too: + + | e1000 ne2k_pci pcnet rtl8139 virtio-net-pci + -------------+------------------------------------------------ + iPXE | x x x x x + VirtioNetDxe | x + Intel PROEFI | x + +=== OVMF Flash Layout === + +Like all current IA32/X64 system designs, OVMF's firmware +device (rom/flash) appears in QEMU's physical address space +just below 4GB (0x100000000). + +The layout of the firmware device in memory looks like: + ++--------------------------------------- 4GB (0x100000000) +| VTF0 (16-bit reset code) and OVMF SEC +| (SECFV) ++--------------------------------------- varies based on flash size +| +| Compressed main firmware image +| (FVMAIN_COMPACT) +| ++--------------------------------------- base + 0x20000 +| Fault-tolerant write (FTW) +| Spare blocks (64KB/0x10000) ++--------------------------------------- base + 0x10000 +| FTW Work block (4KB/0x1000) ++--------------------------------------- base + 0x0f000 +| Event log area (4KB/0x1000) ++--------------------------------------- base + 0x0e000 +| Non-volatile variable storage +| area (56KB/0xe000) ++--------------------------------------- base address + +OVMF supports building a 1MB or a 2MB flash image. The base address for +a 1MB image in QEMU physical memory is 0xfff00000. The base address for +a 2MB image is 0xffe00000. + +The code in SECFV locates FVMAIN_COMPACT, and decompresses the +main firmware (MAINFV) into RAM memory at address 0x800000. The +remaining OVMF firmware then uses this decompressed firmware +volume image. === UNIXGCC Debug ===