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This commit introdues a new build option to OvmfPkg: HTTP_BOOT_ENABLE. When HttpBoot is enabled, a new Network boot option will show in the boot manager menu with the device path like this: PciRoot(0x0)/Pci(0x3,0x0)/MAC(525400123456,0x1)/IPv4(0.0.0.0)/Uri() It works like the PXE one but fetches the NBP from the given http url instead of the tftp service. A simple testing environment can be set up with the QEMU tap network and dnsmasq + lighttpd. Here is the example of the dnsmasq config: interface=<tap interface> dhcp-range=192.168.111.100,192.168.111.120,12h dhcp-option=60,"HTTPClient" dhcp-boot="http://<tap ip>/<efi file>" It's similar to the PXE server settings except the tftp function is disabled, the option 60 must be "HTTPClient", and the boot uri is a http url. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Gary Ching-Pang Lin <glin@suse.com> Reviewed-by: Fu Siyuan <siyuan.fu@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18258 6f19259b-4bc3-4df7-8a09-765794883524