| // 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; |
| |
| |
| /* |
| * Differentiated System Description Table (DSDT) |
| */ |
| #define DSDT_SIGNATURE 0x54445344 // DSDT |
| |
| /* |
| * 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 fill_dsdt(struct fadt_descriptor_rev1 *fadt, void *dsdt) |
| { |
| if (fadt->dsdt) { |
| free((void *)le32_to_cpu(fadt->dsdt)); |
| } |
| fadt->dsdt = cpu_to_le32((u32)dsdt); |
| fadt->checksum -= checksum(fadt, sizeof(*fadt)); |
| dprintf(1, "ACPI DSDT=%p\n", dsdt); |
| } |
| |
| 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)); |
| |
| if (!fadt || !facs) { |
| warn_noalloc(); |
| return NULL; |
| } |
| |
| /* FACS */ |
| memset(facs, 0, sizeof(*facs)); |
| facs->signature = FACS_SIGNATURE; |
| facs->length = cpu_to_le32(sizeof(*facs)); |
| |
| /* FADT */ |
| memset(fadt, 0, sizeof(*fadt)); |
| fadt->firmware_ctrl = cpu_to_le32((u32)facs); |
| fadt->dsdt = 0; /* dsdt will be filled later in acpi_bios_init() |
| by fill_dsdt() */ |
| fadt->model = 1; |
| fadt->reserved1 = 0; |
| 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); |
| /* 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; |
| } |
| |
| #define AmlCode static ssdp_proc_aml |
| #include "ssdt-proc.hex" |
| #undef AmlCode |
| |
| /* 0x5B 0x83 ProcessorOp PkgLength NameString ProcID */ |
| #define SD_OFFSET_CPUHEX (*ssdt_proc_name - *ssdt_proc_start + 2) |
| #define SD_OFFSET_CPUID1 (*ssdt_proc_name - *ssdt_proc_start + 4) |
| #define SD_OFFSET_CPUID2 (*ssdt_proc_id - *ssdt_proc_start) |
| #define SD_SIZEOF (*ssdt_proc_end - *ssdt_proc_start) |
| #define SD_PROC (ssdp_proc_aml + *ssdt_proc_start) |
| |
| #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 * SD_SIZEOF) |
| + (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, SD_PROC, SD_SIZEOF); |
| 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 += SD_SIZEOF; |
| } |
| |
| // 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; |
| |
| // 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) |
| |
| struct fadt_descriptor_rev1 *fadt = build_fadt(pci); |
| ACPI_INIT_TABLE(fadt); |
| ACPI_INIT_TABLE(build_ssdt()); |
| ACPI_INIT_TABLE(build_madt()); |
| 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; |
| } |
| struct acpi_table_header *header = |
| qemu_cfg_next_acpi_table_load(addr, len); |
| if (header->signature == DSDT_SIGNATURE) { |
| if (fadt) { |
| fill_dsdt(fadt, addr); |
| } |
| } else { |
| ACPI_INIT_TABLE(header); |
| } |
| if (tbl_idx == MAX_ACPI_TABLES) { |
| warn_noalloc(); |
| break; |
| } |
| } |
| if (fadt && !fadt->dsdt) { |
| /* default DSDT */ |
| void *dsdt = malloc_high(sizeof(AmlCode)); |
| if (!dsdt) { |
| warn_noalloc(); |
| return; |
| } |
| memcpy(dsdt, AmlCode, sizeof(AmlCode)); |
| fill_dsdt(fadt, dsdt); |
| } |
| |
| // 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; |
| } |
