/* * Based on acpi.c from coreboot * * Copyright (C) 2015, Saket Sinha * Copyright (C) 2016, Bin Meng * * SPDX-License-Identifier: GPL-2.0+ */ #define RSDP_SIG "RSD PTR " /* RSDP pointer signature */ #define OEM_ID "U-BOOT" /* U-Boot */ #define OEM_TABLE_ID "U-BOOTBL" /* U-Boot Table */ #define ASLC_ID "INTL" /* Intel ASL Compiler */ #define ACPI_RSDP_REV_ACPI_1_0 0 #define ACPI_RSDP_REV_ACPI_2_0 2 /* * 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, others 2 */ 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]; }; #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 /* Generic ACPI header, provided by (almost) all tables */ 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 aslc_id[4]; /* ASL compiler vendor ID */ u32 aslc_revision; /* ASL compiler revision number */ }; /* 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]; }; /* FADT Preferred Power Management Profile */ enum acpi_pm_profile { ACPI_PM_UNSPECIFIED = 0, ACPI_PM_DESKTOP, ACPI_PM_MOBILE, ACPI_PM_WORKSTATION, ACPI_PM_ENTERPRISE_SERVER, ACPI_PM_SOHO_SERVER, ACPI_PM_APPLIANCE_PC, ACPI_PM_PERFORMANCE_SERVER, ACPI_PM_TABLET }; /* FADT flags for p_lvl2_lat and p_lvl3_lat */ #define ACPI_FADT_C2_NOT_SUPPORTED 101 #define ACPI_FADT_C3_NOT_SUPPORTED 1001 /* FADT Boot Architecture Flags */ #define ACPI_FADT_LEGACY_FREE 0x00 #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) /* 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) #define ACPI_FADT_HW_REDUCED_ACPI (1 << 20) #define ACPI_FADT_LOW_PWR_IDLE_S0 (1 << 21) 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 */ }; enum acpi_address_space_size { ACPI_ACCESS_SIZE_UNDEFINED = 0, ACPI_ACCESS_SIZE_BYTE_ACCESS, ACPI_ACCESS_SIZE_WORD_ACCESS, ACPI_ACCESS_SIZE_DWORD_ACCESS, ACPI_ACCESS_SIZE_QWORD_ACCESS }; struct acpi_gen_regaddr { u8 space_id; /* Address space ID */ u8 bit_width; /* Register size in bits */ u8 bit_offset; /* Register bit offset */ u8 access_size; /* Access size */ u32 addrl; /* Register address, low 32 bits */ u32 addrh; /* Register address, high 32 bits */ }; /* FADT (Fixed ACPI Description Table) */ struct __packed acpi_fadt { struct acpi_table_header header; u32 firmware_ctrl; u32 dsdt; u8 res1; 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; }; /* FACS flags */ #define ACPI_FACS_S4BIOS_F (1 << 0) #define ACPI_FACS_64BIT_WAKE_F (1 << 1) /* 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; /* Version 2 */ u8 res1[3]; u32 ospm_flags; /* OSPM enabled flags */ u8 res2[24]; }; /* MADT flags */ #define ACPI_MADT_PCAT_COMPAT (1 << 0) /* MADT (Multiple APIC Description Table) */ struct acpi_madt { struct acpi_table_header header; u32 lapic_addr; /* Local APIC address */ u32 flags; /* Multiple APIC flags */ }; /* MADT: APIC Structure Type*/ enum acpi_apic_types { ACPI_APIC_LAPIC = 0, /* Processor local APIC */ ACPI_APIC_IOAPIC, /* I/O APIC */ ACPI_APIC_IRQ_SRC_OVERRIDE, /* Interrupt source override */ ACPI_APIC_NMI_SRC, /* NMI source */ ACPI_APIC_LAPIC_NMI, /* Local APIC NMI */ ACPI_APIC_LAPIC_ADDR_OVERRIDE, /* Local APIC address override */ ACPI_APIC_IOSAPIC, /* I/O SAPIC */ ACPI_APIC_LSAPIC, /* Local SAPIC */ ACPI_APIC_PLATFORM_IRQ_SRC, /* Platform interrupt sources */ ACPI_APIC_LX2APIC, /* Processor local x2APIC */ ACPI_APIC_LX2APIC_NMI, /* Local x2APIC NMI */ }; /* MADT: Processor Local APIC Structure */ #define LOCAL_APIC_FLAG_ENABLED (1 << 0) 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 */ }; /* 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 __packed 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 */ }; /* MADT: Local APIC NMI Structure */ struct __packed 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# */ }; /* 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_l; u32 base_address_h; u16 pci_segment_group_number; u8 start_bus_number; u8 end_bus_number; u8 reserved[4]; }; #define OEM_REVISION 42 #define ASL_COMPILER_REVISION 42 /* 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);