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i386: ACPI table generation code from seabios

Browse Source 
This adds C code for generating ACPI tables at runtime,
imported from seabios git tree
    commit 51684b7ced75fb76776e8ee84833fcfb6ecf12dd

Although ACPI tables come from a system BIOS on real hw,
it makes sense that the ACPI tables are coupled with the
virtual machine, since they have to abstract the x86 machine to
the OS's.

This is widely desired as a way to avoid the churn
and proliferation of QEMU-specific interfaces
associated with ACPI tables in bios code.

Notes:
As BIOS can reprogram devices prior to loading
ACPI tables, we pre-format ACPI tables but defer loading
hardware configuration there until tables are loaded.

The code structure was intentionally kept as close
to the seabios original as possible, to simplify
comparison and making sure we didn't lose anything
in translation.

Minor code duplication results, to help ensure there are no functional
regressions, I think it's better to merge it like this and do more code
changes in follow-up patches.

Cross-version compatibility concerns have been addressed:
    ACPI tables are exposed to guest as FW_CFG entries.
    When running with -M 1.5 and older, this patch disables ACPI
    table generation, and doesn't expose ACPI
    tables to guest.

    As table content is likely to change over time,
    the following measures are taken to simplify
    cross-version migration:
    - All tables besides the RSDP are packed in a single FW CFG entry.
      This entry size is currently 23K. We round it up to 64K
      to avoid too much churn there.
    - Tables are placed in special ROM blob (not mapped into guest memory)
      which is automatically migrated together with the guest, same
      as BIOS code.
    - Offsets where hardware configuration is loaded in ACPI tables
      are also migrated, this is in case future ACPI changes make us
      rearrange the tables in memory.

This patch reuses some code from SeaBIOS, which was originally under
LGPLv2 and then relicensed to GPLv3 or LGPLv3, in QEMU under GPLv2+. This
relicensing has been acked by all contributors that had contributed to the
code since the v2->v3 relicense. ACKs approving the v2+ relicensing are
listed below. The list might include ACKs from people not holding
copyright on any parts of the reused code, but it's better to err on the
side of caution and include them.

Affected SeaBIOS files (GPLv2+ license headers added)
<http://thread.gmane.org/gmane.comp.bios.coreboot.seabios/5949>:

 src/acpi-dsdt-cpu-hotplug.dsl
 src/acpi-dsdt-dbug.dsl
 src/acpi-dsdt-hpet.dsl
 src/acpi-dsdt-isa.dsl
 src/acpi-dsdt-pci-crs.dsl
 src/acpi.c
 src/acpi.h
 src/ssdt-misc.dsl
 src/ssdt-pcihp.dsl
 src/ssdt-proc.dsl
 tools/acpi_extract.py
 tools/acpi_extract_preprocess.py

Each one of the listed people agreed to the following:

> If you allow the use of your contribution in QEMU under the
> terms of GPLv2 or later as proposed by this patch,
> please respond to this mail including the line:
>
> Acked-by: Name <email address>

  Acked-by: Gerd Hoffmann <kraxel@redhat.com>
  Acked-by: Jan Kiszka <jan.kiszka@siemens.com>
  Acked-by: Jason Baron <jbaron@akamai.com>
  Acked-by: David Woodhouse <David.Woodhouse@intel.com>
  Acked-by: Gleb Natapov <gleb@redhat.com>
  Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
  Acked-by: Dave Frodin <dave.frodin@se-eng.com>
  Acked-by: Paolo Bonzini <pbonzini@redhat.com>
  Acked-by: Kevin O'Connor <kevin@koconnor.net>
  Acked-by: Laszlo Ersek <lersek@redhat.com>
  Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
  Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
  Acked-by: Magnus Christensson <magnus.christensson@intel.com>
  Acked-by: Hu Tao <hutao@cn.fujitsu.com>
  Acked-by: Eduardo Habkost <ehabkost@redhat.com>

Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2013-07-24 18:56:14 +03:00
parent 1a4b2666df
commit 72c194f7e7
8 changed files with 1569 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/i386/Makefile.objs
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@ -5,7 +5,11 @@ obj-y += pc_sysfw.o
obj-$(CONFIG_XEN) += xen_domainbuild.o xen_machine_pv.o
obj-y += kvmvapic.o
obj-y += acpi-build.o
obj-y += bios-linker-loader.o
hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \
hw/i386/ssdt-proc.hex hw/i386/ssdt-pcihp.hex hw/i386/ssdt-misc.hex \
hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex
iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
; then echo "$(2)"; else echo "$(3)"; fi ;)

1214
hw/i386/acpi-build.c Normal file
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File diff suppressed because it is too large Load Diff

9
hw/i386/acpi-build.h Normal file
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@ -0,0 +1,9 @@
#ifndef HW_I386_ACPI_BUILD_H
#define HW_I386_ACPI_BUILD_H
#include "qemu/typedefs.h"
void acpi_setup(PcGuestInfo *);
#endif

331
hw/i386/acpi-defs.h Normal file
View File

@ -0,0 +1,331 @@
/*
* 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/>.
*/
#ifndef QEMU_ACPI_DEFS_H
#define QEMU_ACPI_DEFS_H
enum {
ACPI_FADT_F_WBINVD,
ACPI_FADT_F_WBINVD_FLUSH,
ACPI_FADT_F_PROC_C1,
ACPI_FADT_F_P_LVL2_UP,
ACPI_FADT_F_PWR_BUTTON,
ACPI_FADT_F_SLP_BUTTON,
ACPI_FADT_F_FIX_RTC,
ACPI_FADT_F_RTC_S4,
ACPI_FADT_F_TMR_VAL_EXT,
ACPI_FADT_F_DCK_CAP,
ACPI_FADT_F_RESET_REG_SUP,
ACPI_FADT_F_SEALED_CASE,
ACPI_FADT_F_HEADLESS,
ACPI_FADT_F_CPU_SW_SLP,
ACPI_FADT_F_PCI_EXP_WAK,
ACPI_FADT_F_USE_PLATFORM_CLOCK,
ACPI_FADT_F_S4_RTC_STS_VALID,
ACPI_FADT_F_REMOTE_POWER_ON_CAPABLE,
ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL,
ACPI_FADT_F_FORCE_APIC_PHYSICAL_DESTINATION_MODE,
ACPI_FADT_F_HW_REDUCED_ACPI,
ACPI_FADT_F_LOW_POWER_S0_IDLE_CAPABLE,
};
/*
* ACPI 2.0 Generic Address Space definition.
*/
struct Acpi20GenericAddress {
uint8_t address_space_id;
uint8_t register_bit_width;
uint8_t register_bit_offset;
uint8_t reserved;
uint64_t address;
} QEMU_PACKED;
typedef struct Acpi20GenericAddress Acpi20GenericAddress;
#define ACPI_RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR "
struct AcpiRsdpDescriptor { /* Root System Descriptor Pointer */
uint64_t signature; /* ACPI signature, contains "RSD PTR " */
uint8_t checksum; /* To make sum of struct == 0 */
uint8_t oem_id [6]; /* OEM identification */
uint8_t revision; /* Must be 0 for 1.0, 2 for 2.0 */
uint32_t rsdt_physical_address; /* 32-bit physical address of RSDT */
uint32_t length; /* XSDT Length in bytes including hdr */
uint64_t xsdt_physical_address; /* 64-bit physical address of XSDT */
uint8_t extended_checksum; /* Checksum of entire table */
uint8_t reserved [3]; /* Reserved field must be 0 */
} QEMU_PACKED;
typedef struct AcpiRsdpDescriptor AcpiRsdpDescriptor;
/* Table structure from Linux kernel (the ACPI tables are under the
BSD license) */
#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
uint32_t signature; /* ACPI signature (4 ASCII characters) */ \
uint32_t length; /* Length of table, in bytes, including header */ \
uint8_t revision; /* ACPI Specification minor version # */ \
uint8_t checksum; /* To make sum of entire table == 0 */ \
uint8_t oem_id [6]; /* OEM identification */ \
uint8_t oem_table_id [8]; /* OEM table identification */ \
uint32_t oem_revision; /* OEM revision number */ \
uint8_t asl_compiler_id [4]; /* ASL compiler vendor ID */ \
uint32_t asl_compiler_revision; /* ASL compiler revision number */
struct AcpiTableHeader /* ACPI common table header */
{
ACPI_TABLE_HEADER_DEF
} QEMU_PACKED;
typedef struct AcpiTableHeader AcpiTableHeader;
/*
* ACPI 1.0 Fixed ACPI Description Table (FADT)
*/
#define ACPI_FACP_SIGNATURE 0x50434146 // FACP
struct AcpiFadtDescriptorRev1
{
ACPI_TABLE_HEADER_DEF /* ACPI common table header */
uint32_t firmware_ctrl; /* Physical address of FACS */
uint32_t dsdt; /* Physical address of DSDT */
uint8_t model; /* System Interrupt Model */
uint8_t reserved1; /* Reserved */
uint16_t sci_int; /* System vector of SCI interrupt */
uint32_t smi_cmd; /* Port address of SMI command port */
uint8_t acpi_enable; /* Value to write to smi_cmd to enable ACPI */
uint8_t acpi_disable; /* Value to write to smi_cmd to disable ACPI */
uint8_t S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */
uint8_t reserved2; /* Reserved - must be zero */
uint32_t pm1a_evt_blk; /* Port address of Power Mgt 1a acpi_event Reg Blk */
uint32_t pm1b_evt_blk; /* Port address of Power Mgt 1b acpi_event Reg Blk */
uint32_t pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */
uint32_t pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */
uint32_t pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */
uint32_t pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */
uint32_t gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */
uint32_t gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */
uint8_t pm1_evt_len; /* Byte length of ports at pm1_x_evt_blk */
uint8_t pm1_cnt_len; /* Byte length of ports at pm1_x_cnt_blk */
uint8_t pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */
uint8_t pm_tmr_len; /* Byte Length of ports at pm_tm_blk */
uint8_t gpe0_blk_len; /* Byte Length of ports at gpe0_blk */
uint8_t gpe1_blk_len; /* Byte Length of ports at gpe1_blk */
uint8_t gpe1_base; /* Offset in gpe model where gpe1 events start */
uint8_t reserved3; /* Reserved */
uint16_t plvl2_lat; /* Worst case HW latency to enter/exit C2 state */
uint16_t plvl3_lat; /* Worst case HW latency to enter/exit C3 state */
uint16_t flush_size; /* Size of area read to flush caches */
uint16_t flush_stride; /* Stride used in flushing caches */
uint8_t duty_offset; /* Bit location of duty cycle field in p_cnt reg */
uint8_t duty_width; /* Bit width of duty cycle field in p_cnt reg */
uint8_t day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */
uint8_t mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */
uint8_t century; /* Index to century in RTC CMOS RAM */
uint8_t reserved4; /* Reserved */
uint8_t reserved4a; /* Reserved */
uint8_t reserved4b; /* Reserved */
uint32_t flags;
} QEMU_PACKED;
typedef struct AcpiFadtDescriptorRev1 AcpiFadtDescriptorRev1;
/*
* ACPI 1.0 Root System Description Table (RSDT)
*/
#define ACPI_RSDT_SIGNATURE 0x54445352 // RSDT
struct AcpiRsdtDescriptorRev1
{
ACPI_TABLE_HEADER_DEF /* ACPI common table header */
uint32_t table_offset_entry[0]; /* Array of pointers to other */
/* ACPI tables */
} QEMU_PACKED;
typedef struct AcpiRsdtDescriptorRev1 AcpiRsdtDescriptorRev1;
/*
* ACPI 1.0 Firmware ACPI Control Structure (FACS)
*/
#define ACPI_FACS_SIGNATURE 0x53434146 // FACS
struct AcpiFacsDescriptorRev1
{
uint32_t signature; /* ACPI Signature */
uint32_t length; /* Length of structure, in bytes */
uint32_t hardware_signature; /* Hardware configuration signature */
uint32_t firmware_waking_vector; /* ACPI OS waking vector */
uint32_t global_lock; /* Global Lock */
uint32_t flags;
uint8_t resverved3 [40]; /* Reserved - must be zero */
} QEMU_PACKED;
typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1;
/*
* Differentiated System Description Table (DSDT)
*/
#define ACPI_DSDT_SIGNATURE 0x54445344 // DSDT
/*
* MADT values and structures
*/
/* Values for MADT PCATCompat */
#define ACPI_DUAL_PIC 0
#define ACPI_MULTIPLE_APIC 1
/* Master MADT */
#define ACPI_APIC_SIGNATURE 0x43495041 // APIC
struct AcpiMultipleApicTable
{
ACPI_TABLE_HEADER_DEF /* ACPI common table header */
uint32_t local_apic_address; /* Physical address of local APIC */
uint32_t flags;
} QEMU_PACKED;
typedef struct AcpiMultipleApicTable AcpiMultipleApicTable;
/* Values for Type in APIC sub-headers */
#define ACPI_APIC_PROCESSOR 0
#define ACPI_APIC_IO 1
#define ACPI_APIC_XRUPT_OVERRIDE 2
#define ACPI_APIC_NMI 3
#define ACPI_APIC_LOCAL_NMI 4
#define ACPI_APIC_ADDRESS_OVERRIDE 5
#define ACPI_APIC_IO_SAPIC 6
#define ACPI_APIC_LOCAL_SAPIC 7
#define ACPI_APIC_XRUPT_SOURCE 8
#define ACPI_APIC_RESERVED 9 /* 9 and greater are reserved */
/*
* MADT sub-structures (Follow MULTIPLE_APIC_DESCRIPTION_TABLE)
*/
#define ACPI_SUB_HEADER_DEF /* Common ACPI sub-structure header */\
uint8_t type; \
uint8_t length;
/* Sub-structures for MADT */
struct AcpiMadtProcessorApic
{
ACPI_SUB_HEADER_DEF
uint8_t processor_id; /* ACPI processor id */
uint8_t local_apic_id; /* Processor's local APIC id */
uint32_t flags;
} QEMU_PACKED;
typedef struct AcpiMadtProcessorApic AcpiMadtProcessorApic;
struct AcpiMadtIoApic
{
ACPI_SUB_HEADER_DEF
uint8_t io_apic_id; /* I/O APIC ID */
uint8_t reserved; /* Reserved - must be zero */
uint32_t address; /* APIC physical address */
uint32_t interrupt; /* Global system interrupt where INTI
* lines start */
} QEMU_PACKED;
typedef struct AcpiMadtIoApic AcpiMadtIoApic;
struct AcpiMadtIntsrcovr {
ACPI_SUB_HEADER_DEF
uint8_t bus;
uint8_t source;
uint32_t gsi;
uint16_t flags;
} QEMU_PACKED;
typedef struct AcpiMadtIntsrcovr AcpiMadtIntsrcovr;
struct AcpiMadtLocalNmi {
ACPI_SUB_HEADER_DEF
uint8_t processor_id; /* ACPI processor id */
uint16_t flags; /* MPS INTI flags */
uint8_t lint; /* Local APIC LINT# */
} QEMU_PACKED;
typedef struct AcpiMadtLocalNmi AcpiMadtLocalNmi;
/*
* HPET Description Table
*/
#define ACPI_HPET_SIGNATURE 0x54455048 // HPET
struct Acpi20Hpet {
ACPI_TABLE_HEADER_DEF /* ACPI common table header */
uint32_t timer_block_id;
Acpi20GenericAddress addr;
uint8_t hpet_number;
uint16_t min_tick;
uint8_t page_protect;
} QEMU_PACKED;
typedef struct Acpi20Hpet Acpi20Hpet;
/*
* SRAT (NUMA topology description) table
*/
#define ACPI_SRAT_SIGNATURE 0x54415253 // SRAT
struct AcpiSystemResourceAffinityTable
{
ACPI_TABLE_HEADER_DEF
uint32_t reserved1;
uint32_t reserved2[2];
} QEMU_PACKED;
typedef struct AcpiSystemResourceAffinityTable AcpiSystemResourceAffinityTable;
#define ACPI_SRAT_PROCESSOR 0
#define ACPI_SRAT_MEMORY 1
struct AcpiSratProcessorAffinity
{
ACPI_SUB_HEADER_DEF
uint8_t proximity_lo;
uint8_t local_apic_id;
uint32_t flags;
uint8_t local_sapic_eid;
uint8_t proximity_hi[3];
uint32_t reserved;
} QEMU_PACKED;
typedef struct AcpiSratProcessorAffinity AcpiSratProcessorAffinity;
struct AcpiSratMemoryAffinity
{
ACPI_SUB_HEADER_DEF
uint8_t proximity[4];
uint16_t reserved1;
uint64_t base_addr;
uint64_t range_length;
uint32_t reserved2;
uint32_t flags;
uint32_t reserved3[2];
} QEMU_PACKED;
typedef struct AcpiSratMemoryAffinity AcpiSratMemoryAffinity;
/* PCI fw r3.0 MCFG table. */
/* Subtable */
struct AcpiMcfgAllocation {
uint64_t address; /* Base address, processor-relative */
uint16_t pci_segment; /* PCI segment group number */
uint8_t start_bus_number; /* Starting PCI Bus number */
uint8_t end_bus_number; /* Final PCI Bus number */
uint32_t reserved;
} QEMU_PACKED;
typedef struct AcpiMcfgAllocation AcpiMcfgAllocation;
#define ACPI_MCFG_SIGNATURE 0x4746434d // MCFG
/* Reserved signature: ignored by OSPM */
#define ACPI_RSRV_SIGNATURE 0x554d4551 // QEMU
struct AcpiTableMcfg {
ACPI_TABLE_HEADER_DEF;
uint8_t reserved[8];
AcpiMcfgAllocation allocation[0];
} QEMU_PACKED;
typedef struct AcpiTableMcfg AcpiTableMcfg;
#endif

2
hw/i386/pc.c
View File

@ -56,6 +56,7 @@
#include "hw/cpu/icc_bus.h"
#include "hw/boards.h"
#include "hw/pci/pci_host.h"
#include "acpi-build.h"
/* debug PC/ISA interrupts */
//#define DEBUG_IRQ
@ -1040,6 +1041,7 @@ void pc_guest_info_machine_done(Notifier *notifier, void *data)
PcGuestInfoState,
machine_done);
pc_fw_cfg_guest_info(&guest_info_state->info);
acpi_setup(&guest_info_state->info);
}
PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,

5
hw/i386/pc_piix.c
View File

@ -59,6 +59,7 @@ static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
static bool has_pvpanic;
static bool has_pci_info = true;
static bool has_acpi_build = true;
/* PC hardware initialisation */
static void pc_init1(QEMUMachineInitArgs *args,
@ -122,6 +123,9 @@ static void pc_init1(QEMUMachineInitArgs *args,
}
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
guest_info->has_acpi_build = has_acpi_build;
guest_info->has_pci_info = has_pci_info;
guest_info->isapc_ram_fw = !pci_enabled;
@ -240,6 +244,7 @@ static void pc_compat_1_6(QEMUMachineInitArgs *args)
{
has_pci_info = false;
rom_file_in_ram = false;
has_acpi_build = false;
}
static void pc_compat_1_5(QEMUMachineInitArgs *args)

3
hw/i386/pc_q35.c
View File

@ -49,6 +49,7 @@
static bool has_pvpanic;
static bool has_pci_info = true;
static bool has_acpi_build = true;
/* PC hardware initialisation */
static void pc_q35_init(QEMUMachineInitArgs *args)
@ -111,6 +112,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
guest_info->has_pci_info = has_pci_info;
guest_info->isapc_ram_fw = false;
guest_info->has_acpi_build = has_acpi_build;
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
@ -224,6 +226,7 @@ static void pc_compat_1_6(QEMUMachineInitArgs *args)
{
has_pci_info = false;
rom_file_in_ram = false;
has_acpi_build = false;
}
static void pc_compat_1_5(QEMUMachineInitArgs *args)

1
include/hw/i386/pc.h
View File

@ -40,6 +40,7 @@ struct PcGuestInfo {
uint64_t *node_mem;
uint64_t *node_cpu;
FWCfgState *fw_cfg;
bool has_acpi_build;
};
/* parallel.c */