提交 f5d8c8cd 编写于 作者: S Shannon Zhao 提交者: Peter Maydell

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: NShannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: NShannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Message-id: 1432522520-8068-5-git-send-email-zhaoshenglong@huawei.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
上级 6a1f001b
......@@ -3,6 +3,7 @@ obj-$(CONFIG_DIGIC) += digic_boards.o
obj-y += integratorcp.o kzm.o mainstone.o musicpal.o nseries.o
obj-y += omap_sx1.o palm.o realview.o spitz.o stellaris.o
obj-y += tosa.o versatilepb.o vexpress.o virt.o xilinx_zynq.o z2.o
obj-$(CONFIG_ACPI) += virt-acpi-build.o
obj-y += netduino2.o
obj-y += armv7m.o exynos4210.o pxa2xx.o pxa2xx_gpio.o pxa2xx_pic.o
......
/* Support for generating ACPI tables and passing them to Guests
*
* ARM virt ACPI generation
*
* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
* Copyright (C) 2006 Fabrice Bellard
* Copyright (C) 2013 Red Hat Inc
*
* Author: Michael S. Tsirkin <mst@redhat.com>
*
* 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 of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that 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/>.
*/
#include "qemu-common.h"
#include "hw/arm/virt-acpi-build.h"
#include "qemu/bitmap.h"
#include "trace.h"
#include "qom/cpu.h"
#include "target-arm/cpu.h"
#include "hw/acpi/acpi-defs.h"
#include "hw/acpi/acpi.h"
#include "hw/nvram/fw_cfg.h"
#include "hw/acpi/bios-linker-loader.h"
#include "hw/loader.h"
#include "hw/hw.h"
#include "hw/acpi/aml-build.h"
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
MemoryRegion *table_mr;
MemoryRegion *rsdp_mr;
MemoryRegion *linker_mr;
/* Is table patched? */
bool patched;
VirtGuestInfo *guest_info;
} AcpiBuildState;
static
void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
{
GArray *table_offsets;
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
64, false /* high memory */);
/*
* The ACPI v5.1 tables for Hardware-reduced ACPI platform are:
* RSDP
* RSDT
* FADT
* GTDT
* MADT
* DSDT
*/
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
static void acpi_ram_update(MemoryRegion *mr, GArray *data)
{
uint32_t size = acpi_data_len(data);
/* Make sure RAM size is correct - in case it got changed
* e.g. by migration */
memory_region_ram_resize(mr, size, &error_abort);
memcpy(memory_region_get_ram_ptr(mr), data->data, size);
memory_region_set_dirty(mr, 0, size);
}
static void virt_acpi_build_update(void *build_opaque, uint32_t offset)
{
AcpiBuildState *build_state = build_opaque;
AcpiBuildTables tables;
/* No state to update or already patched? Nothing to do. */
if (!build_state || build_state->patched) {
return;
}
build_state->patched = true;
acpi_build_tables_init(&tables);
virt_acpi_build(build_state->guest_info, &tables);
acpi_ram_update(build_state->table_mr, tables.table_data);
acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
acpi_ram_update(build_state->linker_mr, tables.linker);
acpi_build_tables_cleanup(&tables, true);
}
static void virt_acpi_build_reset(void *build_opaque)
{
AcpiBuildState *build_state = build_opaque;
build_state->patched = false;
}
static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
GArray *blob, const char *name,
uint64_t max_size)
{
return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
name, virt_acpi_build_update, build_state);
}
static const VMStateDescription vmstate_virt_acpi_build = {
.name = "virt_acpi_build",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_BOOL(patched, AcpiBuildState),
VMSTATE_END_OF_LIST()
},
};
void virt_acpi_setup(VirtGuestInfo *guest_info)
{
AcpiBuildTables tables;
AcpiBuildState *build_state;
if (!guest_info->fw_cfg) {
trace_virt_acpi_setup();
return;
}
if (!acpi_enabled) {
trace_virt_acpi_setup();
return;
}
build_state = g_malloc0(sizeof *build_state);
build_state->guest_info = guest_info;
acpi_build_tables_init(&tables);
virt_acpi_build(build_state->guest_info, &tables);
/* Now expose it all to Guest */
build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_MAX_SIZE);
assert(build_state->table_mr != NULL);
build_state->linker_mr =
acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
tables.tcpalog->data, acpi_data_len(tables.tcpalog));
build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
ACPI_BUILD_RSDP_FILE, 0);
qemu_register_reset(virt_acpi_build_reset, build_state);
virt_acpi_build_reset(build_state);
vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state);
/* Cleanup tables but don't free the memory: we track it
* in build_state.
*/
acpi_build_tables_cleanup(&tables, false);
}
/*
*
* 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
......@@ -1352,7 +1352,7 @@ be needed to boot from old floppy disks.
ETEXI
DEF("no-acpi", 0, QEMU_OPTION_no_acpi,
"-no-acpi disable ACPI\n", QEMU_ARCH_I386)
"-no-acpi disable ACPI\n", QEMU_ARCH_I386 | QEMU_ARCH_ARM)
STEXI
@item -no-acpi
@findex -no-acpi
......
......@@ -1594,3 +1594,6 @@ i8257_unregistered_dma(int nchan, int dma_pos, int dma_len) "unregistered DMA ch
cpu_set_state(int cpu_index, uint8_t state) "setting cpu %d state to %" PRIu8
cpu_halt(int cpu_index) "halting cpu %d"
cpu_unhalt(int cpu_index) "unhalting cpu %d"
# hw/arm/virt-acpi-build.c
virt_acpi_setup(void) "No fw cfg or ACPI disabled. Bailing out."
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