configs/qemu_x86_64_efi_defconfig: new defconfig

This defconfig enables EDK2 UEFI firmware and grub2 x86_64-efi boot
of a Linux Kernel in QEMU virt machine.

Signed-off-by: Scott Fan <fancp2007@gmail.com>
[Julien:
 - add .in suffix to genimage.cfg and grub.cfg template file names
 - change UUID_TMP template variable to %PARTUUID%
 - use human readable partition-type-uuid in genimage.cfg.in
 - break long qemu-system-x86_64 command line in readme.txt
 - add "-serial stdio" in readme.txt qemu command line for CI
]
Signed-off-by: Julien Olivain <ju.o@free.fr>

board/qemu/x86_64-efi/genimage.cfg.in

@@ -0,0 +1,32 @@
+image efi-part.vfat {
+	vfat {
+		file EFI {
+			image = "efi-part/EFI"
+		}
+
+		file bzImage {
+			image = "bzImage"
+		}
+	}
+
+	size = 16352K # 16MB - 32KB
+}
+
+image disk.img {
+	hdimage {
+		partition-table-type = "gpt"
+	}
+
+	partition boot {
+		image = "efi-part.vfat"
+		partition-type-uuid = U
+		offset = 32K
+		bootable = true
+	}
+
+	partition root {
+		partition-type-uuid = root-x86-64
+		partition-uuid = %PARTUUID%
+		image = "rootfs.ext2"
+	}
+}

board/qemu/x86_64-efi/grub.cfg.in

@@ -0,0 +1,6 @@
+set default="0"
+set timeout="5"
+
+menuentry "Buildroot" {
+	linux /bzImage root=PARTUUID=%PARTUUID% rootwait console=tty1 console=ttyS0
+}

board/qemu/x86_64-efi/linux.config

@@ -0,0 +1,59 @@
+CONFIG_SYSVIPC=y
+CONFIG_SMP=y
+CONFIG_HYPERVISOR_GUEST=y
+CONFIG_PARAVIRT=y
+CONFIG_EFI=y
+# CONFIG_GCC_PLUGINS is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_WIRELESS is not set
+CONFIG_PCI=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_SCSI_VIRTIO=y
+CONFIG_ATA=y
+CONFIG_ATA_PIIX=y
+CONFIG_NETDEVICES=y
+CONFIG_VIRTIO_NET=y
+CONFIG_NE2K_PCI=y
+CONFIG_8139CP=y
+# CONFIG_WLAN is not set
+CONFIG_INPUT_EVDEV=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_HW_RANDOM_VIRTIO=m
+CONFIG_DRM=y
+CONFIG_DRM_I915=y
+CONFIG_DRM_QXL=y
+CONFIG_DRM_VIRTIO_GPU=y
+CONFIG_DRM_BOCHS=y
+CONFIG_FB=y
+CONFIG_FB_VESA=y
+CONFIG_FB_EFI=y
+CONFIG_FIRMWARE_EDID=y
+CONFIG_SOUND=y
+CONFIG_SND=y
+CONFIG_SND_HDA_INTEL=y
+CONFIG_SND_HDA_GENERIC=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_UHCI_HCD=y
+CONFIG_USB_STORAGE=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VIRTIO_INPUT=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
+CONFIG_EXT4_FS=y
+CONFIG_FUSE_FS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_SQUASHFS=y
+CONFIG_UNWINDER_FRAME_POINTER=y

board/qemu/x86_64-efi/post-build.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -u
+set -e
+
+# Add a console on tty1
+if [ -e "${TARGET_DIR}/etc/inittab" ]; then
+    grep -qE '^tty1::' "${TARGET_DIR}/etc/inittab" || \
+	sed -i '/GENERIC_SERIAL/a\
+tty1::respawn:/sbin/getty -L  tty1 0 vt100 # QEMU graphical window' "${TARGET_DIR}/etc/inittab"
+fi

board/qemu/x86_64-efi/post-image.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+BOARD_DIR="$(dirname "$0")"
+
+PARTUUID=$(dumpe2fs "${BINARIES_DIR}/rootfs.ext2" 2>/dev/null | sed -n 's/^Filesystem UUID: *\(.*\)/\1/p')
+sed "s/%PARTUUID%/$PARTUUID/g" "${BOARD_DIR}/grub.cfg.in" > "${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg"
+sed "s/%PARTUUID%/$PARTUUID/g" "${BOARD_DIR}/genimage.cfg.in" > "${BINARIES_DIR}/genimage.cfg"
+support/scripts/genimage.sh -c "${BINARIES_DIR}/genimage.cfg"

board/qemu/x86_64-efi/readme.txt

@@ -0,0 +1,28 @@
+Intro
+=====
+
+This is a x86_64 UEFI Linux boot demo in QEMU virt machine.
+
+Build
+=====
+
+    make qemu_x86_64_efi_defconfig
+    make
+
+Emulation
+=========
+
+Run the emulation with:
+
+    qemu-system-x86_64 \
+        -M pc \
+        -m 1024 \
+        -serial stdio \
+        -bios output/images/OVMF.fd \
+        -drive file=output/images/disk.img,format=raw \
+        -netdev user,id=net0 \
+        -device virtio-net-pci,netdev=net0 # qemu_x86_64_efi_defconfig
+
+Optionally add -smp N to emulate a SMP system with N CPUs.
+
+The login prompt will appear in the graphical window.

configs/qemu_x86_64_efi_defconfig

@@ -0,0 +1,25 @@
+BR2_x86_64=y
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_12=y
+BR2_GLOBAL_PATCH_DIR="board/qemu/patches"
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_SYSTEM_DHCP="eth0"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/qemu/x86_64-efi/post-build.sh"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/qemu/post-image.sh board/qemu/x86_64-efi/post-image.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="$(BR2_DEFCONFIG)"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.47"
+BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/x86_64-efi/linux.config"
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+BR2_LINUX_KERNEL_NEEDS_HOST_LIBELF=y
+BR2_TARGET_ROOTFS_EXT2=y
+# BR2_TARGET_ROOTFS_TAR is not set
+BR2_TARGET_EDK2=y
+BR2_TARGET_GRUB2=y
+BR2_TARGET_GRUB2_X86_64_EFI=y
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_HOST_QEMU=y
+BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y