--- /dev/null
+// Support for generating ACPI tables (on emulators)
+//
+// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2006 Fabrice Bellard
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+
+#include "acpi.h" // struct rsdp_descriptor
+#include "util.h" // memcpy
+#include "pci.h" // pci_find_init_device
+#include "biosvar.h" // GET_EBDA
+#include "pci_ids.h" // PCI_VENDOR_ID_INTEL
+#include "pci_regs.h" // PCI_INTERRUPT_LINE
+#include "paravirt.h"
+
+/****************************************************/
+/* ACPI tables init */
+
+/* Table structure from Linux kernel (the ACPI tables are under the
+ BSD license) */
+
+struct acpi_table_header /* ACPI common table header */
+{
+ ACPI_TABLE_HEADER_DEF
+} PACKED;
+
+/*
+ * ACPI 1.0 Root System Description Table (RSDT)
+ */
+#define RSDT_SIGNATURE 0x54445352 // RSDT
+struct rsdt_descriptor_rev1
+{
+ ACPI_TABLE_HEADER_DEF /* ACPI common table header */
+ u32 table_offset_entry[0]; /* Array of pointers to other */
+ /* ACPI tables */
+} PACKED;
+
+/*
+ * ACPI 1.0 Firmware ACPI Control Structure (FACS)
+ */
+#define FACS_SIGNATURE 0x53434146 // FACS
+struct facs_descriptor_rev1
+{
+ u32 signature; /* ACPI Signature */
+ u32 length; /* Length of structure, in bytes */
+ u32 hardware_signature; /* Hardware configuration signature */
+ u32 firmware_waking_vector; /* ACPI OS waking vector */
+ u32 global_lock; /* Global Lock */
+ u32 S4bios_f : 1; /* Indicates if S4BIOS support is present */
+ u32 reserved1 : 31; /* Must be 0 */
+ u8 resverved3 [40]; /* Reserved - must be zero */
+} PACKED;
+
+
+/*
+ * MADT values and structures
+ */
+
+/* Values for MADT PCATCompat */
+
+#define DUAL_PIC 0
+#define MULTIPLE_APIC 1
+
+
+/* Master MADT */
+
+#define APIC_SIGNATURE 0x43495041 // APIC
+struct multiple_apic_table
+{
+ ACPI_TABLE_HEADER_DEF /* ACPI common table header */
+ u32 local_apic_address; /* Physical address of local APIC */
+#if 0
+ u32 PCATcompat : 1; /* A one indicates system also has dual 8259s */
+ u32 reserved1 : 31;
+#else
+ u32 flags;
+#endif
+} PACKED;
+
+
+/* Values for Type in APIC sub-headers */
+
+#define APIC_PROCESSOR 0
+#define APIC_IO 1
+#define APIC_XRUPT_OVERRIDE 2
+#define APIC_NMI 3
+#define APIC_LOCAL_NMI 4
+#define APIC_ADDRESS_OVERRIDE 5
+#define APIC_IO_SAPIC 6
+#define APIC_LOCAL_SAPIC 7
+#define APIC_XRUPT_SOURCE 8
+#define 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 */\
+ u8 type; \
+ u8 length;
+
+/* Sub-structures for MADT */
+
+struct madt_processor_apic
+{
+ ACPI_SUB_HEADER_DEF
+ u8 processor_id; /* ACPI processor id */
+ u8 local_apic_id; /* Processor's local APIC id */
+#if 0
+ u32 processor_enabled: 1; /* Processor is usable if set */
+ u32 reserved2 : 31; /* Reserved, must be zero */
+#else
+ u32 flags;
+#endif
+} PACKED;
+
+struct madt_io_apic
+{
+ ACPI_SUB_HEADER_DEF
+ u8 io_apic_id; /* I/O APIC ID */
+ u8 reserved; /* Reserved - must be zero */
+ u32 address; /* APIC physical address */
+ u32 interrupt; /* Global system interrupt where INTI
+ * lines start */
+} PACKED;
+
+/* IRQs 5,9,10,11 */
+#define PCI_ISA_IRQ_MASK 0x0e20
+
+struct madt_intsrcovr {
+ ACPI_SUB_HEADER_DEF
+ u8 bus;
+ u8 source;
+ u32 gsi;
+ u16 flags;
+} PACKED;
+
+/*
+ * ACPI 2.0 Generic Address Space definition.
+ */
+struct acpi_20_generic_address {
+ u8 address_space_id;
+ u8 register_bit_width;
+ u8 register_bit_offset;
+ u8 reserved;
+ u64 address;
+} PACKED;
+
+/*
+ * HPET Description Table
+ */
+struct acpi_20_hpet {
+ ACPI_TABLE_HEADER_DEF /* ACPI common table header */
+ u32 timer_block_id;
+ struct acpi_20_generic_address addr;
+ u8 hpet_number;
+ u16 min_tick;
+ u8 page_protect;
+} PACKED;
+
+#define HPET_ID 0x000
+#define HPET_PERIOD 0x004
+
+/*
+ * SRAT (NUMA topology description) table
+ */
+
+#define SRAT_PROCESSOR 0
+#define SRAT_MEMORY 1
+
+struct system_resource_affinity_table
+{
+ ACPI_TABLE_HEADER_DEF
+ u32 reserved1;
+ u32 reserved2[2];
+} PACKED;
+
+struct srat_processor_affinity
+{
+ ACPI_SUB_HEADER_DEF
+ u8 proximity_lo;
+ u8 local_apic_id;
+ u32 flags;
+ u8 local_sapic_eid;
+ u8 proximity_hi[3];
+ u32 reserved;
+} PACKED;
+
+struct srat_memory_affinity
+{
+ ACPI_SUB_HEADER_DEF
+ u8 proximity[4];
+ u16 reserved1;
+ u32 base_addr_low,base_addr_high;
+ u32 length_low,length_high;
+ u32 reserved2;
+ u32 flags;
+ u32 reserved3[2];
+} PACKED;
+
+#include "acpi-dsdt.hex"
+
+static void
+build_header(struct acpi_table_header *h, u32 sig, int len, u8 rev)
+{
+ h->signature = sig;
+ h->length = cpu_to_le32(len);
+ h->revision = rev;
+ memcpy(h->oem_id, CONFIG_APPNAME6, 6);
+ memcpy(h->oem_table_id, CONFIG_APPNAME4, 4);
+ memcpy(h->oem_table_id + 4, (void*)&sig, 4);
+ h->oem_revision = cpu_to_le32(1);
+ memcpy(h->asl_compiler_id, CONFIG_APPNAME4, 4);
+ h->asl_compiler_revision = cpu_to_le32(1);
+ h->checksum -= checksum(h, len);
+}
+
+#define PIIX4_ACPI_ENABLE 0xf1
+#define PIIX4_ACPI_DISABLE 0xf0
+#define PIIX4_GPE0_BLK 0xafe0
+#define PIIX4_GPE0_BLK_LEN 4
+
+static void piix4_fadt_init(struct pci_device *pci, void *arg)
+{
+ struct fadt_descriptor_rev1 *fadt = arg;
+ fadt->acpi_enable = PIIX4_ACPI_ENABLE;
+ fadt->acpi_disable = PIIX4_ACPI_DISABLE;
+ fadt->gpe0_blk = cpu_to_le32(PIIX4_GPE0_BLK);
+ fadt->gpe0_blk_len = PIIX4_GPE0_BLK_LEN;
+}
+
+static const struct pci_device_id fadt_init_tbl[] = {
+ /* PIIX4 Power Management device (for ACPI) */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3,
+ piix4_fadt_init),
+
+ PCI_DEVICE_END
+};
+
+static void *
+build_fadt(struct pci_device *pci)
+{
+ struct fadt_descriptor_rev1 *fadt = malloc_high(sizeof(*fadt));
+ struct facs_descriptor_rev1 *facs = memalign_high(64, sizeof(*facs));
+ void *dsdt = malloc_high(sizeof(AmlCode));
+
+ if (!fadt || !facs || !dsdt) {
+ warn_noalloc();
+ return NULL;
+ }
+
+ /* FACS */
+ memset(facs, 0, sizeof(*facs));
+ facs->signature = FACS_SIGNATURE;
+ facs->length = cpu_to_le32(sizeof(*facs));
+
+ /* DSDT */
+ memcpy(dsdt, AmlCode, sizeof(AmlCode));
+
+ /* FADT */
+ memset(fadt, 0, sizeof(*fadt));
+ fadt->firmware_ctrl = cpu_to_le32((u32)facs);
+ fadt->dsdt = cpu_to_le32((u32)dsdt);
+ fadt->model = 1;
+ fadt->reserved1 = 0;
+
+ if (pci) {
+ int pm_sci_int = pci_config_readb(pci->bdf, PCI_INTERRUPT_LINE);
+
+ fadt->sci_int = cpu_to_le16(pm_sci_int);
+ fadt->smi_cmd = cpu_to_le32(PORT_SMI_CMD);
+ fadt->pm1a_evt_blk = cpu_to_le32(PORT_ACPI_PM_BASE);
+ fadt->pm1a_cnt_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x04);
+ fadt->pm_tmr_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x08);
+ fadt->pm1_evt_len = 4;
+ fadt->pm1_cnt_len = 2;
+ fadt->pm_tmr_len = 4;
+
+
+ fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
+ fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
+ pci_init_device(fadt_init_tbl, pci, fadt);
+ } else {
+
+ fadt->sci_int = 0;
+ fadt->smi_cmd = 0;
+ fadt->pm1a_evt_blk = 0;
+ fadt->pm1a_cnt_blk = 0;
+ fadt->pm_tmr_blk = 0;
+ fadt->pm1_evt_len = 0;
+ fadt->pm1_cnt_len = 0;
+ fadt->pm_tmr_len = 0;
+
+
+ fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
+ fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
+
+ // No PIIX4 to init
+ // pci_init_device(fadt_init_tbl, pci, fadt);
+
+ }
+
+ /* WBINVD + PROC_C1 + SLP_BUTTON + FIX_RTC + RTC_S4 */
+ fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 5) | (1 << 6) | (1 << 7));
+
+ build_header((void*)fadt, FACP_SIGNATURE, sizeof(*fadt), 1);
+
+ return fadt;
+}
+
+static void*
+build_madt(void)
+{
+ int madt_size = (sizeof(struct multiple_apic_table)
+ + sizeof(struct madt_processor_apic) * MaxCountCPUs
+ + sizeof(struct madt_io_apic)
+ + sizeof(struct madt_intsrcovr) * 16);
+ struct multiple_apic_table *madt = malloc_high(madt_size);
+ if (!madt) {
+ warn_noalloc();
+ return NULL;
+ }
+ memset(madt, 0, madt_size);
+ madt->local_apic_address = cpu_to_le32(BUILD_APIC_ADDR);
+ madt->flags = cpu_to_le32(1);
+ struct madt_processor_apic *apic = (void*)&madt[1];
+ int i;
+ for (i=0; i<MaxCountCPUs; i++) {
+ apic->type = APIC_PROCESSOR;
+ apic->length = sizeof(*apic);
+ apic->processor_id = i;
+ apic->local_apic_id = i;
+ if (i < CountCPUs)
+ apic->flags = cpu_to_le32(1);
+ else
+ apic->flags = cpu_to_le32(0);
+ apic++;
+ }
+ struct madt_io_apic *io_apic = (void*)apic;
+ io_apic->type = APIC_IO;
+ io_apic->length = sizeof(*io_apic);
+ io_apic->io_apic_id = CountCPUs;
+ io_apic->address = cpu_to_le32(BUILD_IOAPIC_ADDR);
+ io_apic->interrupt = cpu_to_le32(0);
+
+ struct madt_intsrcovr *intsrcovr = (void*)&io_apic[1];
+ if (qemu_cfg_irq0_override()) {
+ memset(intsrcovr, 0, sizeof(*intsrcovr));
+ intsrcovr->type = APIC_XRUPT_OVERRIDE;
+ intsrcovr->length = sizeof(*intsrcovr);
+ intsrcovr->source = 0;
+ intsrcovr->gsi = 2;
+ intsrcovr->flags = 0; /* conforms to bus specifications */
+ intsrcovr++;
+ }
+ for (i = 1; i < 16; i++) {
+ if (!(PCI_ISA_IRQ_MASK & (1 << i)))
+ /* No need for a INT source override structure. */
+ continue;
+ memset(intsrcovr, 0, sizeof(*intsrcovr));
+ intsrcovr->type = APIC_XRUPT_OVERRIDE;
+ intsrcovr->length = sizeof(*intsrcovr);
+ intsrcovr->source = i;
+ intsrcovr->gsi = i;
+ intsrcovr->flags = 0xd; /* active high, level triggered */
+ intsrcovr++;
+ }
+
+ build_header((void*)madt, APIC_SIGNATURE, (void*)intsrcovr - (void*)madt, 1);
+ return madt;
+}
+
+// Encode a hex value
+static inline char getHex(u32 val) {
+ val &= 0x0f;
+ return (val <= 9) ? ('0' + val) : ('A' + val - 10);
+}
+
+// Encode a length in an SSDT.
+static u8 *
+encodeLen(u8 *ssdt_ptr, int length, int bytes)
+{
+ switch (bytes) {
+ default:
+ case 4: ssdt_ptr[3] = ((length >> 20) & 0xff);
+ case 3: ssdt_ptr[2] = ((length >> 12) & 0xff);
+ case 2: ssdt_ptr[1] = ((length >> 4) & 0xff);
+ ssdt_ptr[0] = (((bytes-1) & 0x3) << 6) | (length & 0x0f);
+ break;
+ case 1: ssdt_ptr[0] = length & 0x3f;
+ }
+ return ssdt_ptr + bytes;
+}
+
+// AML Processor() object. See src/ssdt-proc.dsl for info.
+static unsigned char ssdt_proc[] = {
+ 0x5b,0x83,0x42,0x05,0x43,0x50,0x41,0x41,
+ 0xaa,0x10,0xb0,0x00,0x00,0x06,0x08,0x49,
+ 0x44,0x5f,0x5f,0x0a,0xaa,0x08,0x5f,0x48,
+ 0x49,0x44,0x0d,0x41,0x43,0x50,0x49,0x30,
+ 0x30,0x30,0x37,0x00,0x14,0x0f,0x5f,0x4d,
+ 0x41,0x54,0x00,0xa4,0x43,0x50,0x4d,0x41,
+ 0x49,0x44,0x5f,0x5f,0x14,0x0f,0x5f,0x53,
+ 0x54,0x41,0x00,0xa4,0x43,0x50,0x53,0x54,
+ 0x49,0x44,0x5f,0x5f,0x14,0x0f,0x5f,0x45,
+ 0x4a,0x30,0x01,0x43,0x50,0x45,0x4a,0x49,
+ 0x44,0x5f,0x5f,0x68
+};
+#define SD_OFFSET_CPUHEX 6
+#define SD_OFFSET_CPUID1 8
+#define SD_OFFSET_CPUID2 20
+
+#define SSDT_SIGNATURE 0x54445353 // SSDT
+static void*
+build_ssdt(void)
+{
+ int acpi_cpus = MaxCountCPUs > 0xff ? 0xff : MaxCountCPUs;
+ // length = ScopeOp + procs + NTYF method + CPON package
+ int length = ((1+3+4)
+ + (acpi_cpus * sizeof(ssdt_proc))
+ + (1+2+5+(12*acpi_cpus))
+ + (6+2+1+(1*acpi_cpus)));
+ u8 *ssdt = malloc_high(sizeof(struct acpi_table_header) + length);
+ if (! ssdt) {
+ warn_noalloc();
+ return NULL;
+ }
+ u8 *ssdt_ptr = ssdt + sizeof(struct acpi_table_header);
+
+ // build Scope(_SB_) header
+ *(ssdt_ptr++) = 0x10; // ScopeOp
+ ssdt_ptr = encodeLen(ssdt_ptr, length-1, 3);
+ *(ssdt_ptr++) = '_';
+ *(ssdt_ptr++) = 'S';
+ *(ssdt_ptr++) = 'B';
+ *(ssdt_ptr++) = '_';
+
+ // build Processor object for each processor
+ int i;
+ for (i=0; i<acpi_cpus; i++) {
+ memcpy(ssdt_ptr, ssdt_proc, sizeof(ssdt_proc));
+ ssdt_ptr[SD_OFFSET_CPUHEX] = getHex(i >> 4);
+ ssdt_ptr[SD_OFFSET_CPUHEX+1] = getHex(i);
+ ssdt_ptr[SD_OFFSET_CPUID1] = i;
+ ssdt_ptr[SD_OFFSET_CPUID2] = i;
+ ssdt_ptr += sizeof(ssdt_proc);
+ }
+
+ // build "Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}"
+ *(ssdt_ptr++) = 0x14; // MethodOp
+ ssdt_ptr = encodeLen(ssdt_ptr, 2+5+(12*acpi_cpus), 2);
+ *(ssdt_ptr++) = 'N';
+ *(ssdt_ptr++) = 'T';
+ *(ssdt_ptr++) = 'F';
+ *(ssdt_ptr++) = 'Y';
+ *(ssdt_ptr++) = 0x02;
+ for (i=0; i<acpi_cpus; i++) {
+ *(ssdt_ptr++) = 0xA0; // IfOp
+ ssdt_ptr = encodeLen(ssdt_ptr, 11, 1);
+ *(ssdt_ptr++) = 0x93; // LEqualOp
+ *(ssdt_ptr++) = 0x68; // Arg0Op
+ *(ssdt_ptr++) = 0x0A; // BytePrefix
+ *(ssdt_ptr++) = i;
+ *(ssdt_ptr++) = 0x86; // NotifyOp
+ *(ssdt_ptr++) = 'C';
+ *(ssdt_ptr++) = 'P';
+ *(ssdt_ptr++) = getHex(i >> 4);
+ *(ssdt_ptr++) = getHex(i);
+ *(ssdt_ptr++) = 0x69; // Arg1Op
+ }
+
+ // build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
+ *(ssdt_ptr++) = 0x08; // NameOp
+ *(ssdt_ptr++) = 'C';
+ *(ssdt_ptr++) = 'P';
+ *(ssdt_ptr++) = 'O';
+ *(ssdt_ptr++) = 'N';
+ *(ssdt_ptr++) = 0x12; // PackageOp
+ ssdt_ptr = encodeLen(ssdt_ptr, 2+1+(1*acpi_cpus), 2);
+ *(ssdt_ptr++) = acpi_cpus;
+ for (i=0; i<acpi_cpus; i++)
+ *(ssdt_ptr++) = (i < CountCPUs) ? 0x01 : 0x00;
+
+ build_header((void*)ssdt, SSDT_SIGNATURE, ssdt_ptr - ssdt, 1);
+
+ //hexdump(ssdt, ssdt_ptr - ssdt);
+
+ return ssdt;
+}
+
+#define HPET_SIGNATURE 0x54455048 // HPET
+static void*
+build_hpet(void)
+{
+ struct acpi_20_hpet *hpet;
+ const void *hpet_base = (void *)BUILD_HPET_ADDRESS;
+ u32 hpet_vendor = readl(hpet_base + HPET_ID) >> 16;
+ u32 hpet_period = readl(hpet_base + HPET_PERIOD);
+
+ if (hpet_vendor == 0 || hpet_vendor == 0xffff ||
+ hpet_period == 0 || hpet_period > 100000000)
+ return NULL;
+
+ hpet = malloc_high(sizeof(*hpet));
+ if (!hpet) {
+ warn_noalloc();
+ return NULL;
+ }
+
+ memset(hpet, 0, sizeof(*hpet));
+ /* Note timer_block_id value must be kept in sync with value advertised by
+ * emulated hpet
+ */
+ hpet->timer_block_id = cpu_to_le32(0x8086a201);
+ hpet->addr.address = cpu_to_le32(BUILD_HPET_ADDRESS);
+ build_header((void*)hpet, HPET_SIGNATURE, sizeof(*hpet), 1);
+
+ return hpet;
+}
+
+static void
+acpi_build_srat_memory(struct srat_memory_affinity *numamem,
+ u64 base, u64 len, int node, int enabled)
+{
+ numamem->type = SRAT_MEMORY;
+ numamem->length = sizeof(*numamem);
+ memset(numamem->proximity, 0 ,4);
+ numamem->proximity[0] = node;
+ numamem->flags = cpu_to_le32(!!enabled);
+ numamem->base_addr_low = base & 0xFFFFFFFF;
+ numamem->base_addr_high = base >> 32;
+ numamem->length_low = len & 0xFFFFFFFF;
+ numamem->length_high = len >> 32;
+}
+
+#define SRAT_SIGNATURE 0x54415253 // SRAT
+static void *
+build_srat(void)
+{
+ int nb_numa_nodes = qemu_cfg_get_numa_nodes();
+
+ if (nb_numa_nodes == 0)
+ return NULL;
+
+ u64 *numadata = malloc_tmphigh(sizeof(u64) * (MaxCountCPUs + nb_numa_nodes));
+ if (!numadata) {
+ warn_noalloc();
+ return NULL;
+ }
+
+ qemu_cfg_get_numa_data(numadata, MaxCountCPUs + nb_numa_nodes);
+
+ struct system_resource_affinity_table *srat;
+ int srat_size = sizeof(*srat) +
+ sizeof(struct srat_processor_affinity) * MaxCountCPUs +
+ sizeof(struct srat_memory_affinity) * (nb_numa_nodes + 2);
+
+ srat = malloc_high(srat_size);
+ if (!srat) {
+ warn_noalloc();
+ free(numadata);
+ return NULL;
+ }
+
+ memset(srat, 0, srat_size);
+ srat->reserved1=1;
+ struct srat_processor_affinity *core = (void*)(srat + 1);
+ int i;
+ u64 curnode;
+
+ for (i = 0; i < MaxCountCPUs; ++i) {
+ core->type = SRAT_PROCESSOR;
+ core->length = sizeof(*core);
+ core->local_apic_id = i;
+ curnode = *numadata++;
+ core->proximity_lo = curnode;
+ memset(core->proximity_hi, 0, 3);
+ core->local_sapic_eid = 0;
+ if (i < CountCPUs)
+ core->flags = cpu_to_le32(1);
+ else
+ core->flags = 0;
+ core++;
+ }
+
+
+ /* the memory map is a bit tricky, it contains at least one hole
+ * from 640k-1M and possibly another one from 3.5G-4G.
+ */
+ struct srat_memory_affinity *numamem = (void*)core;
+ int slots = 0;
+ u64 mem_len, mem_base, next_base = 0;
+
+ acpi_build_srat_memory(numamem, 0, 640*1024, 0, 1);
+ next_base = 1024 * 1024;
+ numamem++;
+ slots++;
+ for (i = 1; i < nb_numa_nodes + 1; ++i) {
+ mem_base = next_base;
+ mem_len = *numadata++;
+ if (i == 1)
+ mem_len -= 1024 * 1024;
+ next_base = mem_base + mem_len;
+
+ /* Cut out the PCI hole */
+ if (mem_base <= RamSize && next_base > RamSize) {
+ mem_len -= next_base - RamSize;
+ if (mem_len > 0) {
+ acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1);
+ numamem++;
+ slots++;
+ }
+ mem_base = 1ULL << 32;
+ mem_len = next_base - RamSize;
+ next_base += (1ULL << 32) - RamSize;
+ }
+ acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1);
+ numamem++;
+ slots++;
+ }
+ for (; slots < nb_numa_nodes + 2; slots++) {
+ acpi_build_srat_memory(numamem, 0, 0, 0, 0);
+ numamem++;
+ }
+
+ build_header((void*)srat, SRAT_SIGNATURE, srat_size, 1);
+
+ free(numadata);
+ return srat;
+}
+
+static const struct pci_device_id acpi_find_tbl[] = {
+ /* PIIX4 Power Management device. */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, NULL),
+
+ PCI_DEVICE_END,
+};
+
+struct rsdp_descriptor *RsdpAddr;
+
+#define MAX_ACPI_TABLES 20
+void
+acpi_bios_init(void)
+{
+ if (! CONFIG_ACPI)
+ return;
+
+ dprintf(3, "init ACPI tables\n");
+
+ // This code is hardcoded for PIIX4 Power Management device.
+ struct pci_device *pci = pci_find_init_device(acpi_find_tbl, NULL);
+
+ /*
+ if (!pci) {
+ // Device not found
+ return;
+ */
+ if (!pci) {
+ /* JRL: No PIIX4: Disable power management ACPI functions */
+ dprintf(1, "No PIIX4 (v3vee): Disabling ACPI power management functions\n");
+ }
+
+
+ // Build ACPI tables
+ u32 tables[MAX_ACPI_TABLES], tbl_idx = 0;
+
+#define ACPI_INIT_TABLE(X) \
+ do { \
+ tables[tbl_idx] = (u32)(X); \
+ if (tables[tbl_idx]) \
+ tbl_idx++; \
+ } while(0)
+
+ ACPI_INIT_TABLE(build_fadt(pci));
+ ACPI_INIT_TABLE(build_ssdt());
+ ACPI_INIT_TABLE(build_madt());
+ if (pci) {
+ ACPI_INIT_TABLE(build_hpet());
+ }
+ ACPI_INIT_TABLE(build_srat());
+
+ u16 i, external_tables = qemu_cfg_acpi_additional_tables();
+
+ for (i = 0; i < external_tables; i++) {
+ u16 len = qemu_cfg_next_acpi_table_len();
+ void *addr = malloc_high(len);
+ if (!addr) {
+ warn_noalloc();
+ continue;
+ }
+ ACPI_INIT_TABLE(qemu_cfg_next_acpi_table_load(addr, len));
+ if (tbl_idx == MAX_ACPI_TABLES) {
+ warn_noalloc();
+ break;
+ }
+ }
+
+ // Build final rsdt table
+ struct rsdt_descriptor_rev1 *rsdt;
+ size_t rsdt_len = sizeof(*rsdt) + sizeof(u32) * tbl_idx;
+ rsdt = malloc_high(rsdt_len);
+ if (!rsdt) {
+ warn_noalloc();
+ return;
+ }
+ memset(rsdt, 0, rsdt_len);
+ memcpy(rsdt->table_offset_entry, tables, sizeof(u32) * tbl_idx);
+ build_header((void*)rsdt, RSDT_SIGNATURE, rsdt_len, 1);
+
+ // Build rsdp pointer table
+ struct rsdp_descriptor *rsdp = malloc_fseg(sizeof(*rsdp));
+ if (!rsdp) {
+ warn_noalloc();
+ return;
+ }
+ memset(rsdp, 0, sizeof(*rsdp));
+ rsdp->signature = RSDP_SIGNATURE;
+ memcpy(rsdp->oem_id, CONFIG_APPNAME6, 6);
+ rsdp->rsdt_physical_address = cpu_to_le32((u32)rsdt);
+ rsdp->checksum -= checksum(rsdp, 20);
+ RsdpAddr = rsdp;
+ dprintf(1, "ACPI tables: RSDP=%p RSDT=%p\n", rsdp, rsdt);
+}
+
+u32
+find_resume_vector(void)
+{
+ dprintf(4, "rsdp=%p\n", RsdpAddr);
+ if (!RsdpAddr || RsdpAddr->signature != RSDP_SIGNATURE)
+ return 0;
+ struct rsdt_descriptor_rev1 *rsdt = (void*)RsdpAddr->rsdt_physical_address;
+ dprintf(4, "rsdt=%p\n", rsdt);
+ if (!rsdt || rsdt->signature != RSDT_SIGNATURE)
+ return 0;
+ void *end = (void*)rsdt + rsdt->length;
+ int i;
+ for (i=0; (void*)&rsdt->table_offset_entry[i] < end; i++) {
+ struct fadt_descriptor_rev1 *fadt = (void*)rsdt->table_offset_entry[i];
+ if (!fadt || fadt->signature != FACP_SIGNATURE)
+ continue;
+ dprintf(4, "fadt=%p\n", fadt);
+ struct facs_descriptor_rev1 *facs = (void*)fadt->firmware_ctrl;
+ dprintf(4, "facs=%p\n", facs);
+ if (! facs || facs->signature != FACS_SIGNATURE)
+ return 0;
+ // Found it.
+ dprintf(4, "resume addr=%d\n", facs->firmware_waking_vector);
+ return facs->firmware_waking_vector;
+ }
+ return 0;
+}
