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README.md

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+# UEFI bios for QEMU
+
+## Building
+
+### Preparation
+
+```
+git clone https://github.com/tianocore/edk2.git
+cd edk2
+
+```
+
+### bios32.bin
+
+```
+OvmfPkg/build.sh -a X32 -n 4
+cp Build/OvmfX64/DEBUG_GCC4?/FV/OVMF.fd bios32.bin
+```
+
+### bios64.bin
+
+```
+OvmfPkg/build.sh -a X64 -n 4
+cp Build/OvmfX64/DEBUG_GCC4?/FV/OVMF.fd bios64.bin
+```
+
+
+## Using
+
+### 32-bit UEFI in 64-bit system (emulating BayTrail)
+
+```
+qemu-system-x86_64 -bios ~/src/blkn/efi/bios32.bin ....<other qemu options>.... 
+```
+
+### 64-bit UEFI in 64-bit system
+
+```
+qemu-system-x86_64 -bios ~/src/blkn/efi/bios64.bin ....<other qemu options>.... 
+```
+
+### 32-bit UEFI in 32-bit system (emulating old Macs
+
+```
+qemu-system-i386 -bios ~/src/blkn/efi/bios32.bin ....<other qemu options>.... 
+```