hw/arm/virt-acpi-build: Basic framework for building ACPI tables on ARM

Introduce a preliminary framework in virt-acpi-build.c with the main
ACPI build functions. It exposes the generated ACPI contents to
guest over fw_cfg.

The required ACPI v5.1 tables for ARM are:
- RSDP: Initial table that points to XSDT
- RSDT: Points to FADT GTDT MADT tables
- FADT: Generic information about the machine
- GTDT: Generic timer description table
- MADT: Multiple APIC description table
- DSDT: Holds all information about system devices/peripherals, pointed by FADT

Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 1432522520-8068-5-git-send-email-zhaoshenglong@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

include/hw/arm/virt-acpi-build.h

@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD.
+ *
+ * Author: Shannon Zhao <zhaoshenglong@huawei.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef QEMU_VIRT_ACPI_BUILD_H
+#define QEMU_VIRT_ACPI_BUILD_H
+
+#include "qemu-common.h"
+#include "hw/arm/virt.h"
+
+typedef struct VirtGuestInfo {
+    int smp_cpus;
+    FWCfgState *fw_cfg;
+    const MemMapEntry *memmap;
+    const int *irqmap;
+} VirtGuestInfo;
+
+
+typedef struct VirtGuestInfoState {
+    VirtGuestInfo info;
+    Notifier machine_done;
+} VirtGuestInfoState;
+
+void virt_acpi_setup(VirtGuestInfo *guest_info);
+
+#endif