| /* |
| * Based on acpi.c from coreboot |
| * |
| * Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #define RSDP_SIG "RSD PTR " /* RSDT pointer signature */ |
| #define ACPI_TABLE_CREATOR "UBOOT " /* Must be 8 bytes long! */ |
| #define OEM_ID "UBOOT " /* Must be 6 bytes long! */ |
| #define ASLC "INTL" /* Must be 4 bytes long! */ |
| |
| #define OEM_REVISION 42 |
| #define ASL_COMPILER_REVISION 42 |
| |
| #define ACPI_REV_ACPI_1_0 1 |
| #define ACPI_REV_ACPI_2_0 1 |
| #define ACPI_REV_ACPI_3_0 2 |
| #define ACPI_REV_ACPI_4_0 3 |
| #define ACPI_REV_ACPI_5_0 5 |
| |
| #define ACPI_RSDP_REV_ACPI_1_0 0 |
| #define ACPI_RSDP_REV_ACPI_2_0 2 |
| |
| typedef struct acpi_gen_regaddr { |
| u8 space_id; /* Address space ID */ |
| u8 bit_width; /* Register size in bits */ |
| u8 bit_offset; /* Register bit offset */ |
| union { |
| /* Reserved in ACPI 2.0 - 2.0b */ |
| u8 resv; |
| /* Access size in ACPI 2.0c/3.0/4.0/5.0 */ |
| u8 access_size; |
| }; |
| u32 addrl; /* Register address, low 32 bits */ |
| u32 addrh; /* Register address, high 32 bits */ |
| } acpi_addr_t; |
| |
| |
| /* |
| * RSDP (Root System Description Pointer) |
| * Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum |
| */ |
| struct acpi_rsdp { |
| char signature[8]; /* RSDP signature */ |
| u8 checksum; /* Checksum of the first 20 bytes */ |
| char oem_id[6]; /* OEM ID */ |
| u8 revision; /* 0 for ACPI 1.0, 2 for ACPI 2.0/3.0/4.0 */ |
| u32 rsdt_address; /* Physical address of RSDT (32 bits) */ |
| u32 length; /* Total RSDP length (incl. extended part) */ |
| u64 xsdt_address; /* Physical address of XSDT (64 bits) */ |
| u8 ext_checksum; /* Checksum of the whole table */ |
| u8 reserved[3]; |
| }; |
| |
| enum acpi_address_space_type { |
| ACPI_ADDRESS_SPACE_MEMORY = 0, /* System memory */ |
| ACPI_ADDRESS_SPACE_IO, /* System I/O */ |
| ACPI_ADDRESS_SPACE_PCI, /* PCI config space */ |
| ACPI_ADDRESS_SPACE_EC, /* Embedded controller */ |
| ACPI_ADDRESS_SPACE_SMBUS, /* SMBus */ |
| ACPI_ADDRESS_SPACE_PCC = 0x0a, /* Platform Comm. Channel */ |
| ACPI_ADDRESS_SPACE_FIXED = 0x7f /* Functional fixed hardware */ |
| }; |
| |
| /* Access size definitions for Generic address structure */ |
| enum acpi_address_space_size { |
| ACPI_ACCESS_SIZE_UNDEFINED = 0, /* Undefined (legacy reasons) */ |
| ACPI_ACCESS_SIZE_BYTE_ACCESS = 1, |
| ACPI_ACCESS_SIZE_WORD_ACCESS = 2, |
| ACPI_ACCESS_SIZE_DWORD_ACCESS = 3, |
| ACPI_ACCESS_SIZE_QWORD_ACCESS = 4 |
| }; |
| |
| /* Generic ACPI header, provided by (almost) all tables */ |
| typedef struct acpi_table_header { |
| char signature[4]; /* ACPI signature (4 ASCII characters) */ |
| u32 length; /* Table length in bytes (incl. header) */ |
| u8 revision; /* Table version (not ACPI version!) */ |
| volatile u8 checksum; /* To make sum of entire table == 0 */ |
| char oem_id[6]; /* OEM identification */ |
| char oem_table_id[8]; /* OEM table identification */ |
| u32 oem_revision; /* OEM revision number */ |
| char asl_compiler_id[4]; /* ASL compiler vendor ID */ |
| u32 asl_compiler_revision; /* ASL compiler revision number */ |
| } acpi_header_t; |
| |
| /* A maximum number of 32 ACPI tables ought to be enough for now */ |
| #define MAX_ACPI_TABLES 32 |
| |
| /* RSDT (Root System Description Table) */ |
| struct acpi_rsdt { |
| struct acpi_table_header header; |
| u32 entry[MAX_ACPI_TABLES]; |
| }; |
| |
| /* XSDT (Extended System Description Table) */ |
| struct acpi_xsdt { |
| struct acpi_table_header header; |
| u64 entry[MAX_ACPI_TABLES]; |
| }; |
| |
| /* MCFG (PCI Express MMIO config space BAR description table) */ |
| struct acpi_mcfg { |
| struct acpi_table_header header; |
| u8 reserved[8]; |
| }; |
| |
| struct acpi_mcfg_mmconfig { |
| u32 base_address; |
| u32 base_reserved; |
| u16 pci_segment_group_number; |
| u8 start_bus_number; |
| u8 end_bus_number; |
| u8 reserved[4]; |
| }; |
| |
| /* MADT (Multiple APIC Description Table) */ |
| struct acpi_madt { |
| struct acpi_table_header header; |
| u32 lapic_addr; /* Local APIC address */ |
| u32 flags; /* Multiple APIC flags */ |
| } acpi_madt_t; |
| |
| /* MADT: APIC Structure Type*/ |
| enum acpi_apic_types { |
| LOCALAPIC = 0, /* Processor local APIC */ |
| IOAPIC, /* I/O APIC */ |
| IRQSOURCEOVERRIDE, /* Interrupt source override */ |
| NMITYPE, /* NMI source */ |
| LOCALNMITYPE, /* Local APIC NMI */ |
| LAPICADDRESSOVERRIDE, /* Local APIC address override */ |
| IOSAPIC, /* I/O SAPIC */ |
| LOCALSAPIC, /* Local SAPIC */ |
| PLATFORMIRQSOURCES, /* Platform interrupt sources */ |
| LOCALX2SAPIC, /* Processor local x2APIC */ |
| LOCALX2APICNMI, /* Local x2APIC NMI */ |
| }; |
| |
| /* MADT: Processor Local APIC Structure */ |
| struct acpi_madt_lapic { |
| u8 type; /* Type (0) */ |
| u8 length; /* Length in bytes (8) */ |
| u8 processor_id; /* ACPI processor ID */ |
| u8 apic_id; /* Local APIC ID */ |
| u32 flags; /* Local APIC flags */ |
| }; |
| |
| #define LOCAL_APIC_FLAG_ENABLED (1 << 0) |
| /* bits 1-31: reserved */ |
| #define PCAT_COMPAT (1 << 0) |
| /* bits 1-31: reserved */ |
| |
| /* MADT: Local APIC NMI Structure */ |
| struct acpi_madt_lapic_nmi { |
| u8 type; /* Type (4) */ |
| u8 length; /* Length in bytes (6) */ |
| u8 processor_id; /* ACPI processor ID */ |
| u16 flags; /* MPS INTI flags */ |
| u8 lint; /* Local APIC LINT# */ |
| }; |
| |
| /* MADT: I/O APIC Structure */ |
| struct acpi_madt_ioapic { |
| u8 type; /* Type (1) */ |
| u8 length; /* Length in bytes (12) */ |
| u8 ioapic_id; /* I/O APIC ID */ |
| u8 reserved; |
| u32 ioapic_addr; /* I/O APIC address */ |
| u32 gsi_base; /* Global system interrupt base */ |
| }; |
| |
| /* MADT: Interrupt Source Override Structure */ |
| struct acpi_madt_irqoverride { |
| u8 type; /* Type (2) */ |
| u8 length; /* Length in bytes (10) */ |
| u8 bus; /* ISA (0) */ |
| u8 source; /* Bus-relative int. source (IRQ) */ |
| u32 gsirq; /* Global system interrupt */ |
| u16 flags; /* MPS INTI flags */ |
| }; |
| |
| /* FADT (Fixed ACPI Description Table) */ |
| struct __packed acpi_fadt { |
| struct acpi_table_header header; |
| u32 firmware_ctrl; |
| u32 dsdt; |
| u8 model; |
| u8 preferred_pm_profile; |
| u16 sci_int; |
| u32 smi_cmd; |
| u8 acpi_enable; |
| u8 acpi_disable; |
| u8 s4bios_req; |
| u8 pstate_cnt; |
| u32 pm1a_evt_blk; |
| u32 pm1b_evt_blk; |
| u32 pm1a_cnt_blk; |
| u32 pm1b_cnt_blk; |
| u32 pm2_cnt_blk; |
| u32 pm_tmr_blk; |
| u32 gpe0_blk; |
| u32 gpe1_blk; |
| u8 pm1_evt_len; |
| u8 pm1_cnt_len; |
| u8 pm2_cnt_len; |
| u8 pm_tmr_len; |
| u8 gpe0_blk_len; |
| u8 gpe1_blk_len; |
| u8 gpe1_base; |
| u8 cst_cnt; |
| u16 p_lvl2_lat; |
| u16 p_lvl3_lat; |
| u16 flush_size; |
| u16 flush_stride; |
| u8 duty_offset; |
| u8 duty_width; |
| u8 day_alrm; |
| u8 mon_alrm; |
| u8 century; |
| u16 iapc_boot_arch; |
| u8 res2; |
| u32 flags; |
| struct acpi_gen_regaddr reset_reg; |
| u8 reset_value; |
| u8 res3; |
| u8 res4; |
| u8 res5; |
| u32 x_firmware_ctl_l; |
| u32 x_firmware_ctl_h; |
| u32 x_dsdt_l; |
| u32 x_dsdt_h; |
| struct acpi_gen_regaddr x_pm1a_evt_blk; |
| struct acpi_gen_regaddr x_pm1b_evt_blk; |
| struct acpi_gen_regaddr x_pm1a_cnt_blk; |
| struct acpi_gen_regaddr x_pm1b_cnt_blk; |
| struct acpi_gen_regaddr x_pm2_cnt_blk; |
| struct acpi_gen_regaddr x_pm_tmr_blk; |
| struct acpi_gen_regaddr x_gpe0_blk; |
| struct acpi_gen_regaddr x_gpe1_blk; |
| }; |
| |
| /* Flags for p_lvl2_lat and p_lvl3_lat */ |
| #define ACPI_FADT_C2_NOT_SUPPORTED 101 |
| #define ACPI_FADT_C3_NOT_SUPPORTED 1001 |
| |
| /* FADT Feature Flags */ |
| #define ACPI_FADT_WBINVD (1 << 0) |
| #define ACPI_FADT_WBINVD_FLUSH (1 << 1) |
| #define ACPI_FADT_C1_SUPPORTED (1 << 2) |
| #define ACPI_FADT_C2_MP_SUPPORTED (1 << 3) |
| #define ACPI_FADT_POWER_BUTTON (1 << 4) |
| #define ACPI_FADT_SLEEP_BUTTON (1 << 5) |
| #define ACPI_FADT_FIXED_RTC (1 << 6) |
| #define ACPI_FADT_S4_RTC_WAKE (1 << 7) |
| #define ACPI_FADT_32BIT_TIMER (1 << 8) |
| #define ACPI_FADT_DOCKING_SUPPORTED (1 << 9) |
| #define ACPI_FADT_RESET_REGISTER (1 << 10) |
| #define ACPI_FADT_SEALED_CASE (1 << 11) |
| #define ACPI_FADT_HEADLESS (1 << 12) |
| #define ACPI_FADT_SLEEP_TYPE (1 << 13) |
| #define ACPI_FADT_PCI_EXPRESS_WAKE (1 << 14) |
| #define ACPI_FADT_PLATFORM_CLOCK (1 << 15) |
| #define ACPI_FADT_S4_RTC_VALID (1 << 16) |
| #define ACPI_FADT_REMOTE_POWER_ON (1 << 17) |
| #define ACPI_FADT_APIC_CLUSTER (1 << 18) |
| #define ACPI_FADT_APIC_PHYSICAL (1 << 19) |
| /* Bits 20-31: reserved ACPI 3.0 & 4.0 */ |
| #define ACPI_FADT_HW_REDUCED_ACPI (1 << 20) |
| #define ACPI_FADT_LOW_PWR_IDLE_S0 (1 << 21) |
| /* bits 22-31: reserved ACPI 5.0 */ |
| |
| /* FADT Boot Architecture Flags */ |
| #define ACPI_FADT_LEGACY_DEVICES (1 << 0) |
| #define ACPI_FADT_8042 (1 << 1) |
| #define ACPI_FADT_VGA_NOT_PRESENT (1 << 2) |
| #define ACPI_FADT_MSI_NOT_SUPPORTED (1 << 3) |
| #define ACPI_FADT_NO_PCIE_ASPM_CONTROL (1 << 4) |
| /* No legacy devices (including 8042) */ |
| #define ACPI_FADT_LEGACY_FREE 0x00 |
| |
| /* FADT Preferred Power Management Profile */ |
| #define PM_UNSPECIFIED 0 |
| #define PM_DESKTOP 1 |
| #define PM_MOBILE 2 |
| #define PM_WORKSTATION 3 |
| #define PM_ENTERPRISE_SERVER 4 |
| #define PM_SOHO_SERVER 5 |
| #define PM_APPLIANCE_PC 6 |
| #define PM_PERFORMANCE_SERVER 7 |
| #define PM_TABLET 8 /* ACPI 5.0 */ |
| |
| /* FACS (Firmware ACPI Control Structure) */ |
| struct acpi_facs { |
| char signature[4]; /* "FACS" */ |
| u32 length; /* Length in bytes (>= 64) */ |
| u32 hardware_signature; /* Hardware signature */ |
| u32 firmware_waking_vector; /* Firmware waking vector */ |
| u32 global_lock; /* Global lock */ |
| u32 flags; /* FACS flags */ |
| u32 x_firmware_waking_vector_l; /* X FW waking vector, low */ |
| u32 x_firmware_waking_vector_h; /* X FW waking vector, high */ |
| u8 version; /* ACPI 4.0: 2 */ |
| u8 resv[31]; /* FIXME: 4.0: ospm_flags */ |
| }; |
| |
| /* FACS flags */ |
| #define ACPI_FACS_S4BIOS_F (1 << 0) |
| #define ACPI_FACS_64BIT_WAKE_F (1 << 1) |
| /* Bits 31..2: reserved */ |
| |
| /* These can be used by the target port */ |
| |
| unsigned long acpi_create_madt_lapics(unsigned long current); |
| int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id, u32 addr, |
| u32 gsi_base); |
| int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride, |
| u8 bus, u8 source, u32 gsirq, u16 flags); |
| unsigned long acpi_fill_madt(unsigned long current); |
| void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs, |
| void *dsdt); |
| int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi, u8 cpu, |
| u16 flags, u8 lint); |
| u32 write_acpi_tables(u32 start); |