If one is building a binary version of SeaBIOS as part of a package (such as an rpm) or for wide distribution, please provide the EXTRAVERSION field during the build. The SeaBIOS binary will be included as a discrete file within the 'Flash Volume' which is created, and there are tools which will extract it and allow it to be replaced. Having built SeaBIOS with CONFIG_CSM, one should be able to drop the result (out/Csm16.bin) into an OVMF build tree at OvmfPkg/Csm/Csm16/Csm16.bin and then build OVMF with 'build -D CSM_ENABLE'. (Windows 2008r2 is known to use INT 10h BIOS calls even when booted via EFI, and the presence of a CSM makes this work as expected too.) It will provide "legacy" BIOS services for booting non-EFI operating systems and will also allow OVMF to display on otherwise unsupported video hardware by using the traditional VGA BIOS. This binary may be used with the OMVF/EDK-II UEFI firmware. Then build SeaBIOS (make) - the resulting binary will be in "out/Csm16.bin". To build as a CSM, first run kconfig (make menuconfig) and enable CONFIG_CSM. To build for coreboot please see the coreboot build instructions at: Build as a UEFI Compatibility Support Module (CSM) For example:īochs -q 'floppya: 1_44=myfdimage.img' 'romimage: file=out/bios.bin' Build for coreboot One can also use the resulting binary with Bochs. Qemu -bios out/bios.bin -fda myfdimage.img One can use the resulting binary with QEMU by using QEMU's "-bios" option. The resulting file "out/bios.bin" contains the processed bios image. To build for QEMU (and similar), one should be able to run "make" in the main directory. It is also possible to configure additional compile time options - run make menuconfig to do this.īuild for QEMU (along with KVM, Xen, and Bochs) SeaBIOS can be compiled for several different build targets. 1.3 Build as a UEFI Compatibility Support Module (CSM)įirst, obtain the code.1.1 Build for QEMU (along with KVM, Xen, and Bochs).
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