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Saket Sinha331141a2015-08-22 12:20:55 +05301/*
2 * Based on acpi.c from coreboot
3 *
4 * Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
Bin Mengbbcff8d2016-05-07 07:46:22 -07005 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
Saket Sinha331141a2015-08-22 12:20:55 +05306 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
Bin Meng6a421582016-05-07 07:46:21 -070010#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 */
Saket Sinha331141a2015-08-22 12:20:55 +053014
Saket Sinha331141a2015-08-22 12:20:55 +053015#define ACPI_RSDP_REV_ACPI_1_0 0
16#define ACPI_RSDP_REV_ACPI_2_0 2
17
Saket Sinha331141a2015-08-22 12:20:55 +053018/*
19 * RSDP (Root System Description Pointer)
20 * Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum
21 */
22struct acpi_rsdp {
23 char signature[8]; /* RSDP signature */
24 u8 checksum; /* Checksum of the first 20 bytes */
25 char oem_id[6]; /* OEM ID */
Bin Mengbbcff8d2016-05-07 07:46:22 -070026 u8 revision; /* 0 for ACPI 1.0, others 2 */
Saket Sinha331141a2015-08-22 12:20:55 +053027 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
Saket Sinha331141a2015-08-22 12:20:55 +053034/* Generic ACPI header, provided by (almost) all tables */
Bin Meng6a421582016-05-07 07:46:21 -070035struct acpi_table_header {
Saket Sinha331141a2015-08-22 12:20:55 +053036 char signature[4]; /* ACPI signature (4 ASCII characters) */
37 u32 length; /* Table length in bytes (incl. header) */
38 u8 revision; /* Table version (not ACPI version!) */
39 volatile u8 checksum; /* To make sum of entire table == 0 */
40 char oem_id[6]; /* OEM identification */
41 char oem_table_id[8]; /* OEM table identification */
42 u32 oem_revision; /* OEM revision number */
Bin Meng6a421582016-05-07 07:46:21 -070043 char aslc_id[4]; /* ASL compiler vendor ID */
44 u32 aslc_revision; /* ASL compiler revision number */
45};
Saket Sinha331141a2015-08-22 12:20:55 +053046
47/* A maximum number of 32 ACPI tables ought to be enough for now */
Bin Mengbbcff8d2016-05-07 07:46:22 -070048#define MAX_ACPI_TABLES 32
Saket Sinha331141a2015-08-22 12:20:55 +053049
50/* RSDT (Root System Description Table) */
51struct acpi_rsdt {
52 struct acpi_table_header header;
53 u32 entry[MAX_ACPI_TABLES];
54};
55
56/* XSDT (Extended System Description Table) */
57struct acpi_xsdt {
58 struct acpi_table_header header;
59 u64 entry[MAX_ACPI_TABLES];
60};
61
Bin Mengbbcff8d2016-05-07 07:46:22 -070062/* FADT Preferred Power Management Profile */
63enum acpi_pm_profile {
64 ACPI_PM_UNSPECIFIED = 0,
65 ACPI_PM_DESKTOP,
66 ACPI_PM_MOBILE,
67 ACPI_PM_WORKSTATION,
68 ACPI_PM_ENTERPRISE_SERVER,
69 ACPI_PM_SOHO_SERVER,
70 ACPI_PM_APPLIANCE_PC,
71 ACPI_PM_PERFORMANCE_SERVER,
72 ACPI_PM_TABLET
Saket Sinha331141a2015-08-22 12:20:55 +053073};
74
Bin Mengbbcff8d2016-05-07 07:46:22 -070075/* FADT flags for p_lvl2_lat and p_lvl3_lat */
76#define ACPI_FADT_C2_NOT_SUPPORTED 101
77#define ACPI_FADT_C3_NOT_SUPPORTED 1001
Saket Sinha331141a2015-08-22 12:20:55 +053078
Bin Mengbbcff8d2016-05-07 07:46:22 -070079/* FADT Boot Architecture Flags */
80#define ACPI_FADT_LEGACY_FREE 0x00
81#define ACPI_FADT_LEGACY_DEVICES (1 << 0)
82#define ACPI_FADT_8042 (1 << 1)
83#define ACPI_FADT_VGA_NOT_PRESENT (1 << 2)
84#define ACPI_FADT_MSI_NOT_SUPPORTED (1 << 3)
85#define ACPI_FADT_NO_PCIE_ASPM_CONTROL (1 << 4)
Saket Sinha331141a2015-08-22 12:20:55 +053086
Bin Mengbbcff8d2016-05-07 07:46:22 -070087/* FADT Feature Flags */
88#define ACPI_FADT_WBINVD (1 << 0)
89#define ACPI_FADT_WBINVD_FLUSH (1 << 1)
90#define ACPI_FADT_C1_SUPPORTED (1 << 2)
91#define ACPI_FADT_C2_MP_SUPPORTED (1 << 3)
92#define ACPI_FADT_POWER_BUTTON (1 << 4)
93#define ACPI_FADT_SLEEP_BUTTON (1 << 5)
94#define ACPI_FADT_FIXED_RTC (1 << 6)
95#define ACPI_FADT_S4_RTC_WAKE (1 << 7)
96#define ACPI_FADT_32BIT_TIMER (1 << 8)
97#define ACPI_FADT_DOCKING_SUPPORTED (1 << 9)
98#define ACPI_FADT_RESET_REGISTER (1 << 10)
99#define ACPI_FADT_SEALED_CASE (1 << 11)
100#define ACPI_FADT_HEADLESS (1 << 12)
101#define ACPI_FADT_SLEEP_TYPE (1 << 13)
102#define ACPI_FADT_PCI_EXPRESS_WAKE (1 << 14)
103#define ACPI_FADT_PLATFORM_CLOCK (1 << 15)
104#define ACPI_FADT_S4_RTC_VALID (1 << 16)
105#define ACPI_FADT_REMOTE_POWER_ON (1 << 17)
106#define ACPI_FADT_APIC_CLUSTER (1 << 18)
107#define ACPI_FADT_APIC_PHYSICAL (1 << 19)
108#define ACPI_FADT_HW_REDUCED_ACPI (1 << 20)
109#define ACPI_FADT_LOW_PWR_IDLE_S0 (1 << 21)
Saket Sinha331141a2015-08-22 12:20:55 +0530110
Bin Mengbbcff8d2016-05-07 07:46:22 -0700111enum acpi_address_space_type {
112 ACPI_ADDRESS_SPACE_MEMORY = 0, /* System memory */
113 ACPI_ADDRESS_SPACE_IO, /* System I/O */
114 ACPI_ADDRESS_SPACE_PCI, /* PCI config space */
115 ACPI_ADDRESS_SPACE_EC, /* Embedded controller */
116 ACPI_ADDRESS_SPACE_SMBUS, /* SMBus */
117 ACPI_ADDRESS_SPACE_PCC = 0x0a, /* Platform Comm. Channel */
118 ACPI_ADDRESS_SPACE_FIXED = 0x7f /* Functional fixed hardware */
Saket Sinha331141a2015-08-22 12:20:55 +0530119};
120
Bin Mengbbcff8d2016-05-07 07:46:22 -0700121enum acpi_address_space_size {
122 ACPI_ACCESS_SIZE_UNDEFINED = 0,
123 ACPI_ACCESS_SIZE_BYTE_ACCESS,
124 ACPI_ACCESS_SIZE_WORD_ACCESS,
125 ACPI_ACCESS_SIZE_DWORD_ACCESS,
126 ACPI_ACCESS_SIZE_QWORD_ACCESS
Saket Sinha331141a2015-08-22 12:20:55 +0530127};
128
Bin Mengbbcff8d2016-05-07 07:46:22 -0700129struct acpi_gen_regaddr {
130 u8 space_id; /* Address space ID */
131 u8 bit_width; /* Register size in bits */
132 u8 bit_offset; /* Register bit offset */
133 u8 access_size; /* Access size */
134 u32 addrl; /* Register address, low 32 bits */
135 u32 addrh; /* Register address, high 32 bits */
Saket Sinha331141a2015-08-22 12:20:55 +0530136};
137
138/* FADT (Fixed ACPI Description Table) */
139struct __packed acpi_fadt {
140 struct acpi_table_header header;
141 u32 firmware_ctrl;
142 u32 dsdt;
Bin Meng6a421582016-05-07 07:46:21 -0700143 u8 res1;
Saket Sinha331141a2015-08-22 12:20:55 +0530144 u8 preferred_pm_profile;
145 u16 sci_int;
146 u32 smi_cmd;
147 u8 acpi_enable;
148 u8 acpi_disable;
149 u8 s4bios_req;
150 u8 pstate_cnt;
151 u32 pm1a_evt_blk;
152 u32 pm1b_evt_blk;
153 u32 pm1a_cnt_blk;
154 u32 pm1b_cnt_blk;
155 u32 pm2_cnt_blk;
156 u32 pm_tmr_blk;
157 u32 gpe0_blk;
158 u32 gpe1_blk;
159 u8 pm1_evt_len;
160 u8 pm1_cnt_len;
161 u8 pm2_cnt_len;
162 u8 pm_tmr_len;
163 u8 gpe0_blk_len;
164 u8 gpe1_blk_len;
165 u8 gpe1_base;
166 u8 cst_cnt;
167 u16 p_lvl2_lat;
168 u16 p_lvl3_lat;
169 u16 flush_size;
170 u16 flush_stride;
171 u8 duty_offset;
172 u8 duty_width;
173 u8 day_alrm;
174 u8 mon_alrm;
175 u8 century;
176 u16 iapc_boot_arch;
177 u8 res2;
178 u32 flags;
179 struct acpi_gen_regaddr reset_reg;
180 u8 reset_value;
181 u8 res3;
182 u8 res4;
183 u8 res5;
184 u32 x_firmware_ctl_l;
185 u32 x_firmware_ctl_h;
186 u32 x_dsdt_l;
187 u32 x_dsdt_h;
188 struct acpi_gen_regaddr x_pm1a_evt_blk;
189 struct acpi_gen_regaddr x_pm1b_evt_blk;
190 struct acpi_gen_regaddr x_pm1a_cnt_blk;
191 struct acpi_gen_regaddr x_pm1b_cnt_blk;
192 struct acpi_gen_regaddr x_pm2_cnt_blk;
193 struct acpi_gen_regaddr x_pm_tmr_blk;
194 struct acpi_gen_regaddr x_gpe0_blk;
195 struct acpi_gen_regaddr x_gpe1_blk;
196};
197
Bin Mengbbcff8d2016-05-07 07:46:22 -0700198/* FACS flags */
199#define ACPI_FACS_S4BIOS_F (1 << 0)
200#define ACPI_FACS_64BIT_WAKE_F (1 << 1)
Saket Sinha331141a2015-08-22 12:20:55 +0530201
202/* FACS (Firmware ACPI Control Structure) */
203struct acpi_facs {
Bin Mengbbcff8d2016-05-07 07:46:22 -0700204 char signature[4]; /* "FACS" */
205 u32 length; /* Length in bytes (>= 64) */
206 u32 hardware_signature; /* Hardware signature */
207 u32 firmware_waking_vector; /* Firmware waking vector */
208 u32 global_lock; /* Global lock */
209 u32 flags; /* FACS flags */
210 u32 x_firmware_waking_vector_l; /* X FW waking vector, low */
211 u32 x_firmware_waking_vector_h; /* X FW waking vector, high */
212 u8 version; /* Version 2 */
Bin Meng6a421582016-05-07 07:46:21 -0700213 u8 res1[3];
Bin Mengbbcff8d2016-05-07 07:46:22 -0700214 u32 ospm_flags; /* OSPM enabled flags */
Bin Meng6a421582016-05-07 07:46:21 -0700215 u8 res2[24];
Saket Sinha331141a2015-08-22 12:20:55 +0530216};
217
Bin Mengbbcff8d2016-05-07 07:46:22 -0700218/* MADT flags */
219#define ACPI_MADT_PCAT_COMPAT (1 << 0)
220
221/* MADT (Multiple APIC Description Table) */
222struct acpi_madt {
223 struct acpi_table_header header;
224 u32 lapic_addr; /* Local APIC address */
225 u32 flags; /* Multiple APIC flags */
226};
227
228/* MADT: APIC Structure Type*/
229enum acpi_apic_types {
230 ACPI_APIC_LAPIC = 0, /* Processor local APIC */
231 ACPI_APIC_IOAPIC, /* I/O APIC */
232 ACPI_APIC_IRQ_SRC_OVERRIDE, /* Interrupt source override */
233 ACPI_APIC_NMI_SRC, /* NMI source */
234 ACPI_APIC_LAPIC_NMI, /* Local APIC NMI */
235 ACPI_APIC_LAPIC_ADDR_OVERRIDE, /* Local APIC address override */
236 ACPI_APIC_IOSAPIC, /* I/O SAPIC */
237 ACPI_APIC_LSAPIC, /* Local SAPIC */
238 ACPI_APIC_PLATFORM_IRQ_SRC, /* Platform interrupt sources */
239 ACPI_APIC_LX2APIC, /* Processor local x2APIC */
240 ACPI_APIC_LX2APIC_NMI, /* Local x2APIC NMI */
241};
242
243/* MADT: Processor Local APIC Structure */
244
245#define LOCAL_APIC_FLAG_ENABLED (1 << 0)
246
247struct acpi_madt_lapic {
248 u8 type; /* Type (0) */
249 u8 length; /* Length in bytes (8) */
250 u8 processor_id; /* ACPI processor ID */
251 u8 apic_id; /* Local APIC ID */
252 u32 flags; /* Local APIC flags */
253};
254
255/* MADT: I/O APIC Structure */
256struct acpi_madt_ioapic {
257 u8 type; /* Type (1) */
258 u8 length; /* Length in bytes (12) */
259 u8 ioapic_id; /* I/O APIC ID */
260 u8 reserved;
261 u32 ioapic_addr; /* I/O APIC address */
262 u32 gsi_base; /* Global system interrupt base */
263};
264
265/* MADT: Interrupt Source Override Structure */
266struct __packed acpi_madt_irqoverride {
267 u8 type; /* Type (2) */
268 u8 length; /* Length in bytes (10) */
269 u8 bus; /* ISA (0) */
270 u8 source; /* Bus-relative int. source (IRQ) */
271 u32 gsirq; /* Global system interrupt */
272 u16 flags; /* MPS INTI flags */
273};
274
275/* MADT: Local APIC NMI Structure */
276struct __packed acpi_madt_lapic_nmi {
277 u8 type; /* Type (4) */
278 u8 length; /* Length in bytes (6) */
279 u8 processor_id; /* ACPI processor ID */
280 u16 flags; /* MPS INTI flags */
281 u8 lint; /* Local APIC LINT# */
282};
283
284/* MCFG (PCI Express MMIO config space BAR description table) */
285struct acpi_mcfg {
286 struct acpi_table_header header;
287 u8 reserved[8];
288};
289
290struct acpi_mcfg_mmconfig {
291 u32 base_address_l;
292 u32 base_address_h;
293 u16 pci_segment_group_number;
294 u8 start_bus_number;
295 u8 end_bus_number;
296 u8 reserved[4];
297};
298
Bin Menge259eb22016-05-11 07:45:03 -0700299/* PM1_CNT bit defines */
300#define PM1_CNT_SCI_EN (1 << 0)
301
Bin Mengd9050c62016-06-17 02:13:16 -0700302/* ACPI global NVS structure */
303struct acpi_global_nvs;
304
Saket Sinha331141a2015-08-22 12:20:55 +0530305/* These can be used by the target port */
306
Bin Mengb063d5f2016-05-07 07:46:24 -0700307void acpi_fill_header(struct acpi_table_header *header, char *signature);
Bin Meng44256b02016-05-07 07:46:25 -0700308void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
309 void *dsdt);
Bin Meng3c5234e2016-05-07 07:46:30 -0700310int acpi_create_madt_lapics(u32 current);
Bin Meng44256b02016-05-07 07:46:25 -0700311int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id,
312 u32 addr, u32 gsi_base);
Saket Sinha331141a2015-08-22 12:20:55 +0530313int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride,
Bin Meng44256b02016-05-07 07:46:25 -0700314 u8 bus, u8 source, u32 gsirq, u16 flags);
315int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi,
316 u8 cpu, u16 flags, u8 lint);
Bin Menga1ec7db2016-05-07 07:46:26 -0700317u32 acpi_fill_madt(u32 current);
Bin Mengd9050c62016-06-17 02:13:16 -0700318void acpi_create_gnvs(struct acpi_global_nvs *gnvs);
Bin Meng5c549102016-02-27 22:58:00 -0800319u32 write_acpi_tables(u32 start);