mainboard/emulation/qemu-aarch64: Add new board for ARMv8

This CL adds a new board, QEMU/AArch64, for ARMv8. The machine supported
is virt which is a QEMU 2.8 ARM virtual machine. The default CPU of
qemu-system-aarch64 is Cortex-a15, so you need to specify a 64-bit cpu
via a flag.

To execute:
$ qemu-system-aarch64 -M virt,secure=on,virtualization=on \
  -cpu cortex-a53 -bios build/coreboot.rom -m 8192M -nographic

Change-Id: Id7c0831b1ecf08785b4ec8139d809bad9b3e1eec
Signed-off-by: Asami Doi <d0iasm.pub@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/mainboard/emulation/qemu-aarch64/media.c b/src/mainboard/emulation/qemu-aarch64/media.c
new file mode 100644
index 0000000000..03f0eb1bf8
--- /dev/null
+++ b/src/mainboard/emulation/qemu-aarch64/media.c
@@ -0,0 +1,18 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019 Asami Doi <d0iasm.pub@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <boot_device.h>
+
+/* Maps directly to NOR flash up to ROM size. */
+static const struct mem_region_device boot_dev =
+	MEM_REGION_DEV_RO_INIT((void *)0x0, CONFIG_ROM_SIZE);
+
+const struct region_device *boot_device_ro(void)
+{
+	return &boot_dev.rdev;
+}