1 /* 2 * Based on acpi.c from coreboot 3 * 4 * Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com> 5 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #define RSDP_SIG "RSD PTR " /* RSDP pointer signature */ 11 #define OEM_ID "U-BOOT" /* U-Boot */ 12 #define OEM_TABLE_ID "U-BOOTBL" /* U-Boot Table */ 13 #define ASLC_ID "INTL" /* Intel ASL Compiler */ 14 15 #define ACPI_RSDP_REV_ACPI_1_0 0 16 #define ACPI_RSDP_REV_ACPI_2_0 2 17 18 /* 19 * RSDP (Root System Description Pointer) 20 * Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum 21 */ 22 struct acpi_rsdp { 23 char signature[8]; /* RSDP signature */ 24 u8 checksum; /* Checksum of the first 20 bytes */ 25 char oem_id[6]; /* OEM ID */ 26 u8 revision; /* 0 for ACPI 1.0, others 2 */ 27 u32 rsdt_address; /* Physical address of RSDT (32 bits) */ 28 u32 length; /* Total RSDP length (incl. extended part) */ 29 u64 xsdt_address; /* Physical address of XSDT (64 bits) */ 30 u8 ext_checksum; /* Checksum of the whole table */ 31 u8 reserved[3]; 32 }; 33 34 #define ACPI_REV_ACPI_1_0 1 35 #define ACPI_REV_ACPI_2_0 1 36 #define ACPI_REV_ACPI_3_0 2 37 #define ACPI_REV_ACPI_4_0 3 38 #define ACPI_REV_ACPI_5_0 5 39 40 /* Generic ACPI header, provided by (almost) all tables */ 41 struct acpi_table_header { 42 char signature[4]; /* ACPI signature (4 ASCII characters) */ 43 u32 length; /* Table length in bytes (incl. header) */ 44 u8 revision; /* Table version (not ACPI version!) */ 45 volatile u8 checksum; /* To make sum of entire table == 0 */ 46 char oem_id[6]; /* OEM identification */ 47 char oem_table_id[8]; /* OEM table identification */ 48 u32 oem_revision; /* OEM revision number */ 49 char aslc_id[4]; /* ASL compiler vendor ID */ 50 u32 aslc_revision; /* ASL compiler revision number */ 51 }; 52 53 /* A maximum number of 32 ACPI tables ought to be enough for now */ 54 #define MAX_ACPI_TABLES 32 55 56 /* RSDT (Root System Description Table) */ 57 struct acpi_rsdt { 58 struct acpi_table_header header; 59 u32 entry[MAX_ACPI_TABLES]; 60 }; 61 62 /* XSDT (Extended System Description Table) */ 63 struct acpi_xsdt { 64 struct acpi_table_header header; 65 u64 entry[MAX_ACPI_TABLES]; 66 }; 67 68 /* FADT Preferred Power Management Profile */ 69 enum acpi_pm_profile { 70 ACPI_PM_UNSPECIFIED = 0, 71 ACPI_PM_DESKTOP, 72 ACPI_PM_MOBILE, 73 ACPI_PM_WORKSTATION, 74 ACPI_PM_ENTERPRISE_SERVER, 75 ACPI_PM_SOHO_SERVER, 76 ACPI_PM_APPLIANCE_PC, 77 ACPI_PM_PERFORMANCE_SERVER, 78 ACPI_PM_TABLET 79 }; 80 81 /* FADT flags for p_lvl2_lat and p_lvl3_lat */ 82 #define ACPI_FADT_C2_NOT_SUPPORTED 101 83 #define ACPI_FADT_C3_NOT_SUPPORTED 1001 84 85 /* FADT Boot Architecture Flags */ 86 #define ACPI_FADT_LEGACY_FREE 0x00 87 #define ACPI_FADT_LEGACY_DEVICES (1 << 0) 88 #define ACPI_FADT_8042 (1 << 1) 89 #define ACPI_FADT_VGA_NOT_PRESENT (1 << 2) 90 #define ACPI_FADT_MSI_NOT_SUPPORTED (1 << 3) 91 #define ACPI_FADT_NO_PCIE_ASPM_CONTROL (1 << 4) 92 93 /* FADT Feature Flags */ 94 #define ACPI_FADT_WBINVD (1 << 0) 95 #define ACPI_FADT_WBINVD_FLUSH (1 << 1) 96 #define ACPI_FADT_C1_SUPPORTED (1 << 2) 97 #define ACPI_FADT_C2_MP_SUPPORTED (1 << 3) 98 #define ACPI_FADT_POWER_BUTTON (1 << 4) 99 #define ACPI_FADT_SLEEP_BUTTON (1 << 5) 100 #define ACPI_FADT_FIXED_RTC (1 << 6) 101 #define ACPI_FADT_S4_RTC_WAKE (1 << 7) 102 #define ACPI_FADT_32BIT_TIMER (1 << 8) 103 #define ACPI_FADT_DOCKING_SUPPORTED (1 << 9) 104 #define ACPI_FADT_RESET_REGISTER (1 << 10) 105 #define ACPI_FADT_SEALED_CASE (1 << 11) 106 #define ACPI_FADT_HEADLESS (1 << 12) 107 #define ACPI_FADT_SLEEP_TYPE (1 << 13) 108 #define ACPI_FADT_PCI_EXPRESS_WAKE (1 << 14) 109 #define ACPI_FADT_PLATFORM_CLOCK (1 << 15) 110 #define ACPI_FADT_S4_RTC_VALID (1 << 16) 111 #define ACPI_FADT_REMOTE_POWER_ON (1 << 17) 112 #define ACPI_FADT_APIC_CLUSTER (1 << 18) 113 #define ACPI_FADT_APIC_PHYSICAL (1 << 19) 114 #define ACPI_FADT_HW_REDUCED_ACPI (1 << 20) 115 #define ACPI_FADT_LOW_PWR_IDLE_S0 (1 << 21) 116 117 enum acpi_address_space_type { 118 ACPI_ADDRESS_SPACE_MEMORY = 0, /* System memory */ 119 ACPI_ADDRESS_SPACE_IO, /* System I/O */ 120 ACPI_ADDRESS_SPACE_PCI, /* PCI config space */ 121 ACPI_ADDRESS_SPACE_EC, /* Embedded controller */ 122 ACPI_ADDRESS_SPACE_SMBUS, /* SMBus */ 123 ACPI_ADDRESS_SPACE_PCC = 0x0a, /* Platform Comm. Channel */ 124 ACPI_ADDRESS_SPACE_FIXED = 0x7f /* Functional fixed hardware */ 125 }; 126 127 enum acpi_address_space_size { 128 ACPI_ACCESS_SIZE_UNDEFINED = 0, 129 ACPI_ACCESS_SIZE_BYTE_ACCESS, 130 ACPI_ACCESS_SIZE_WORD_ACCESS, 131 ACPI_ACCESS_SIZE_DWORD_ACCESS, 132 ACPI_ACCESS_SIZE_QWORD_ACCESS 133 }; 134 135 struct acpi_gen_regaddr { 136 u8 space_id; /* Address space ID */ 137 u8 bit_width; /* Register size in bits */ 138 u8 bit_offset; /* Register bit offset */ 139 u8 access_size; /* Access size */ 140 u32 addrl; /* Register address, low 32 bits */ 141 u32 addrh; /* Register address, high 32 bits */ 142 }; 143 144 /* FADT (Fixed ACPI Description Table) */ 145 struct __packed acpi_fadt { 146 struct acpi_table_header header; 147 u32 firmware_ctrl; 148 u32 dsdt; 149 u8 res1; 150 u8 preferred_pm_profile; 151 u16 sci_int; 152 u32 smi_cmd; 153 u8 acpi_enable; 154 u8 acpi_disable; 155 u8 s4bios_req; 156 u8 pstate_cnt; 157 u32 pm1a_evt_blk; 158 u32 pm1b_evt_blk; 159 u32 pm1a_cnt_blk; 160 u32 pm1b_cnt_blk; 161 u32 pm2_cnt_blk; 162 u32 pm_tmr_blk; 163 u32 gpe0_blk; 164 u32 gpe1_blk; 165 u8 pm1_evt_len; 166 u8 pm1_cnt_len; 167 u8 pm2_cnt_len; 168 u8 pm_tmr_len; 169 u8 gpe0_blk_len; 170 u8 gpe1_blk_len; 171 u8 gpe1_base; 172 u8 cst_cnt; 173 u16 p_lvl2_lat; 174 u16 p_lvl3_lat; 175 u16 flush_size; 176 u16 flush_stride; 177 u8 duty_offset; 178 u8 duty_width; 179 u8 day_alrm; 180 u8 mon_alrm; 181 u8 century; 182 u16 iapc_boot_arch; 183 u8 res2; 184 u32 flags; 185 struct acpi_gen_regaddr reset_reg; 186 u8 reset_value; 187 u8 res3; 188 u8 res4; 189 u8 res5; 190 u32 x_firmware_ctl_l; 191 u32 x_firmware_ctl_h; 192 u32 x_dsdt_l; 193 u32 x_dsdt_h; 194 struct acpi_gen_regaddr x_pm1a_evt_blk; 195 struct acpi_gen_regaddr x_pm1b_evt_blk; 196 struct acpi_gen_regaddr x_pm1a_cnt_blk; 197 struct acpi_gen_regaddr x_pm1b_cnt_blk; 198 struct acpi_gen_regaddr x_pm2_cnt_blk; 199 struct acpi_gen_regaddr x_pm_tmr_blk; 200 struct acpi_gen_regaddr x_gpe0_blk; 201 struct acpi_gen_regaddr x_gpe1_blk; 202 }; 203 204 /* FACS flags */ 205 #define ACPI_FACS_S4BIOS_F (1 << 0) 206 #define ACPI_FACS_64BIT_WAKE_F (1 << 1) 207 208 /* FACS (Firmware ACPI Control Structure) */ 209 struct acpi_facs { 210 char signature[4]; /* "FACS" */ 211 u32 length; /* Length in bytes (>= 64) */ 212 u32 hardware_signature; /* Hardware signature */ 213 u32 firmware_waking_vector; /* Firmware waking vector */ 214 u32 global_lock; /* Global lock */ 215 u32 flags; /* FACS flags */ 216 u32 x_firmware_waking_vector_l; /* X FW waking vector, low */ 217 u32 x_firmware_waking_vector_h; /* X FW waking vector, high */ 218 u8 version; /* Version 2 */ 219 u8 res1[3]; 220 u32 ospm_flags; /* OSPM enabled flags */ 221 u8 res2[24]; 222 }; 223 224 /* MADT flags */ 225 #define ACPI_MADT_PCAT_COMPAT (1 << 0) 226 227 /* MADT (Multiple APIC Description Table) */ 228 struct acpi_madt { 229 struct acpi_table_header header; 230 u32 lapic_addr; /* Local APIC address */ 231 u32 flags; /* Multiple APIC flags */ 232 }; 233 234 /* MADT: APIC Structure Type*/ 235 enum acpi_apic_types { 236 ACPI_APIC_LAPIC = 0, /* Processor local APIC */ 237 ACPI_APIC_IOAPIC, /* I/O APIC */ 238 ACPI_APIC_IRQ_SRC_OVERRIDE, /* Interrupt source override */ 239 ACPI_APIC_NMI_SRC, /* NMI source */ 240 ACPI_APIC_LAPIC_NMI, /* Local APIC NMI */ 241 ACPI_APIC_LAPIC_ADDR_OVERRIDE, /* Local APIC address override */ 242 ACPI_APIC_IOSAPIC, /* I/O SAPIC */ 243 ACPI_APIC_LSAPIC, /* Local SAPIC */ 244 ACPI_APIC_PLATFORM_IRQ_SRC, /* Platform interrupt sources */ 245 ACPI_APIC_LX2APIC, /* Processor local x2APIC */ 246 ACPI_APIC_LX2APIC_NMI, /* Local x2APIC NMI */ 247 }; 248 249 /* MADT: Processor Local APIC Structure */ 250 251 #define LOCAL_APIC_FLAG_ENABLED (1 << 0) 252 253 struct acpi_madt_lapic { 254 u8 type; /* Type (0) */ 255 u8 length; /* Length in bytes (8) */ 256 u8 processor_id; /* ACPI processor ID */ 257 u8 apic_id; /* Local APIC ID */ 258 u32 flags; /* Local APIC flags */ 259 }; 260 261 /* MADT: I/O APIC Structure */ 262 struct acpi_madt_ioapic { 263 u8 type; /* Type (1) */ 264 u8 length; /* Length in bytes (12) */ 265 u8 ioapic_id; /* I/O APIC ID */ 266 u8 reserved; 267 u32 ioapic_addr; /* I/O APIC address */ 268 u32 gsi_base; /* Global system interrupt base */ 269 }; 270 271 /* MADT: Interrupt Source Override Structure */ 272 struct __packed acpi_madt_irqoverride { 273 u8 type; /* Type (2) */ 274 u8 length; /* Length in bytes (10) */ 275 u8 bus; /* ISA (0) */ 276 u8 source; /* Bus-relative int. source (IRQ) */ 277 u32 gsirq; /* Global system interrupt */ 278 u16 flags; /* MPS INTI flags */ 279 }; 280 281 /* MADT: Local APIC NMI Structure */ 282 struct __packed acpi_madt_lapic_nmi { 283 u8 type; /* Type (4) */ 284 u8 length; /* Length in bytes (6) */ 285 u8 processor_id; /* ACPI processor ID */ 286 u16 flags; /* MPS INTI flags */ 287 u8 lint; /* Local APIC LINT# */ 288 }; 289 290 /* MCFG (PCI Express MMIO config space BAR description table) */ 291 struct acpi_mcfg { 292 struct acpi_table_header header; 293 u8 reserved[8]; 294 }; 295 296 struct acpi_mcfg_mmconfig { 297 u32 base_address_l; 298 u32 base_address_h; 299 u16 pci_segment_group_number; 300 u8 start_bus_number; 301 u8 end_bus_number; 302 u8 reserved[4]; 303 }; 304 305 /* These can be used by the target port */ 306 307 unsigned long acpi_create_madt_lapics(unsigned long current); 308 int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id, u32 addr, 309 u32 gsi_base); 310 int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride, 311 u8 bus, u8 source, u32 gsirq, u16 flags); 312 unsigned long acpi_fill_madt(unsigned long current); 313 void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs, 314 void *dsdt); 315 int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi, u8 cpu, 316 u16 flags, u8 lint); 317 u32 write_acpi_tables(u32 start); 318