Add OVMF firmware and VGA Bios suitable for use with Bochs

sdk/cmake/qemu.cmake

@@ -24,8 +24,8 @@ add_custom_target(testkvm
                   DEPENDS diskimg
                   COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-KVM" -machine type=q35,kernel_irqchip=on,accel=kvm,mem-merge=off,vmport=off -enable-kvm -cpu host,-hypervisor,+topoext
                                           -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
+                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
+                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
                                           -hda ${EXECTOS_BINARY_DIR}/output/disk.img
                                           -boot menu=on -d int -M smm=off -no-reboot -no-shutdown -serial stdio
                   VERBATIM USES_TERMINAL)
@@ -35,8 +35,8 @@ add_custom_target(testtcg
                   DEPENDS diskimg
                   COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-TCG" -machine type=q35,accel=tcg -cpu max,-hypervisor
                                           -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
-                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
+                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
+                                          -drive file=${EXECTOS_SOURCE_DIR}/sdk/firmware/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
                                           -hda ${EXECTOS_BINARY_DIR}/output/disk.img
                                           -boot menu=on -d int -M smm=off -no-reboot -no-shutdown -serial stdio
                   VERBATIM USES_TERMINAL)

sdk/firmware/README.md

@@ -7,6 +7,12 @@ for virtual machines used to test the XTOS. It includes the necessary instructio
 load the operating system, and provide various system services during the boot process. The ovmf_code file is
 responsible for establishing a UEFI environment within the virtual machine, enabling it to boot and operate effectively.
 
+The ovmf_pure files contains the minimum version of the CPU specific UEFI firmware code, suitable for use with Bochs.
+
 The ovmf_vars files, store UEFI variables, which are used to store and retrieve system configuration information, such as
 boot options, device settings, and system preferences. The ovmf_vars file contains the persistent variables specific to
 a virtual machine, allowing it to maintain its configuration across multiple boot sessions.
+
+## Video BIOS (LGPL'd VGABios)
+The vgabios.bin file contains the Video Bios for Bochs and QEMU. This VGA Bios is very specific to the emulated VGA card.
+It is NOT meant to drive a physical vga card. It also implements support for VBE version 2.0.