\r
=== Network Support ===\r
\r
-To add network drivers to OVMF:\r
-\r
-* Download UEFI drivers for the e1000 NIC\r
- - http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=17515&lang=eng\r
- - Install the drivers into a directory called Intel3.5 in your WORKSPACE\r
-\r
-* Include the drivers in OVMF during the build:\r
- - Add '-D NETWORK_ENABLE' to your build command\r
- - For example: build -D NETWORK_ENABLE\r
-\r
-* Use the QEMU -net parameter to enable NIC support.\r
- - QEMU does not support UEFI DHCP or UEFI PXE Boot, so long timeouts will\r
- occur when NICs are enabled. The long timeouts can be avoided by\r
- interrupts the boot sequence by pressing a key when the logo appears.\r
- - Example: Enable e1000 NIC with a DHCP server and restrict packet\r
- forwarding:\r
- -net nic,model=e1000 -net user,restrict=yes -net user,dhcpstart=10.0.2.10\r
- - Example: Enable e1000 NIC with a DHCP server, restrict packet forwarding,\r
- and generate PCAP file:\r
- -net nic,model=e1000 -net user,restrict=yes -net user,dhcpstart=10.0.2.10\r
- -net dump,file=a.pcap\r
- - Example: Enable 2 e1000 NICs with a DHCP server and restrict\r
- packet forwarding:\r
- -net nic,model=e1000,addr=3 -net nic,model=e1000,addr=4\r
- -net user,restrict=yes -net user,dhcpstart=10.0.2.10\r
+OVMF provides a UEFI network stack by default. Its lowest level driver is the\r
+NIC driver, higher levels are generic. In order to make DHCP, PXE Boot, and eg.\r
+socket test utilities from the StdLib edk2 package work, (1) qemu has to be\r
+configured to emulate a NIC, (2) a matching UEFI NIC driver must be available\r
+when OVMF boots.\r
+\r
+(If a NIC is configured for the virtual machine, and -- dependent on boot order\r
+-- PXE booting is attempted, but no DHCP server responds to OVMF's DHCP\r
+DISCOVER message at startup, the boot process may take approx. 3 seconds\r
+longer.)\r
+\r
+* For each NIC emulated by qemu, a GPLv2 licensed UEFI driver is available from\r
+ the iPXE project. The qemu source distribution, starting with version 1.5,\r
+ contains prebuilt binaries of these drivers (and of course allows one to\r
+ rebuild them from source as well). This is the recommended set of drivers.\r
+\r
+* Use the qemu -netdev and -device options, or the legacy -net option, to\r
+ enable NIC support: <http://wiki.qemu.org/Documentation/Networking>.\r
+\r
+* For a qemu >= 1.5 binary running *without* any "-M machine" option where\r
+ "machine" would identify a < qemu-1.5 configuration (for example: "-M\r
+ pc-i440fx-1.4" or "-M pc-0.13"), the iPXE drivers are automatically available\r
+ to and configured for OVMF in the default qemu installation.\r
+\r
+* For a qemu binary in [0.13, 1.5), or a qemu >= 1.5 binary with an "-M\r
+ machine" option where "machine" selects a < qemu-1.5 configuration:\r
+\r
+ - download a >= 1.5.0-rc1 source tarball from <http://wiki.qemu.org/Download>,\r
+\r
+ - extract the following iPXE driver files from the tarball and install them\r
+ in a location that is accessible to qemu processes (this may depend on your\r
+ SELinux configuration, for example):\r
+\r
+ qemu-VERSION/pc-bios/efi-e1000.rom\r
+ qemu-VERSION/pc-bios/efi-ne2k_pci.rom\r
+ qemu-VERSION/pc-bios/efi-pcnet.rom\r
+ qemu-VERSION/pc-bios/efi-rtl8139.rom\r
+ qemu-VERSION/pc-bios/efi-virtio.rom\r
+\r
+ - extend the NIC's -device option on the qemu command line with a matching\r
+ "romfile=" optarg:\r
+\r
+ -device e1000,...,romfile=/full/path/to/efi-e1000.rom\r
+ -device ne2k_pci,...,romfile=/full/path/to/efi-ne2k_pci.rom\r
+ -device pcnet,...,romfile=/full/path/to/efi-pcnet.rom\r
+ -device rtl8139,...,romfile=/full/path/to/efi-rtl8139.rom\r
+ -device virtio-net-pci,...,romfile=/full/path/to/efi-virtio.rom\r
+\r
+* Independently of the iPXE NIC drivers, the default OVMF build provides a\r
+ basic virtio-net driver, located in OvmfPkg/VirtioNetDxe.\r
+\r
+* Also independently of the iPXE NIC drivers, Intel's proprietary E1000 NIC\r
+ driver (PROEFI) can be embedded in the OVMF image at build time:\r
+\r
+ - Download UEFI drivers for the e1000 NIC\r
+ - http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=17515&lang=eng\r
+ - Install the drivers into a directory called Intel3.5 in your WORKSPACE.\r
+\r
+ - Include the driver in OVMF during the build:\r
+ - Add "-D E1000_ENABLE -D FD_SIZE_2MB" to your build command,\r
+ - For example: "build -D E1000_ENABLE -D FD_SIZE_2MB".\r
+\r
+* When a matching iPXE driver is configured for a NIC as described above, it\r
+ takes priority over other drivers that could possibly drive the card too:\r
+\r
+ | e1000 ne2k_pci pcnet rtl8139 virtio-net-pci\r
+ -------------+------------------------------------------------\r
+ iPXE | x x x x x\r
+ VirtioNetDxe | x\r
+ Intel PROEFI | x\r
\r
=== UNIXGCC Debug ===\r
\r
projects / mirror_edk2.git / blobdiff