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Kevin O'Connor84ad59a2008-07-04 05:47:26 -04001// Support for generating ACPI tables (on emulators)
Kevin O'Connor276d4a92008-06-11 22:47:01 -04002//
3// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
4// Copyright (C) 2006 Fabrice Bellard
5//
Kevin O'Connorb1b7c2a2009-01-15 20:52:58 -05006// This file may be distributed under the terms of the GNU LGPLv3 license.
Kevin O'Connor276d4a92008-06-11 22:47:01 -04007
8#include "acpi.h" // struct rsdp_descriptor
9#include "util.h" // memcpy
10#include "memmap.h" // bios_table_cur_addr
11#include "pci.h" // pci_find_device
Kevin O'Connor9521e262008-07-04 13:04:29 -040012#include "biosvar.h" // GET_EBDA
Kevin O'Connor2ed2f582008-11-08 15:53:36 -050013#include "pci_ids.h" // PCI_VENDOR_ID_INTEL
14#include "pci_regs.h" // PCI_INTERRUPT_LINE
Kevin O'Connor276d4a92008-06-11 22:47:01 -040015
16
17/****************************************************/
18/* ACPI tables init */
19
20/* Table structure from Linux kernel (the ACPI tables are under the
21 BSD license) */
22
23#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
Kevin O'Connord10e4442009-03-01 12:41:20 -050024 u32 signature; /* ACPI signature (4 ASCII characters) */ \
25 u32 length; /* Length of table, in bytes, including header */ \
26 u8 revision; /* ACPI Specification minor version # */ \
27 u8 checksum; /* To make sum of entire table == 0 */ \
28 u8 oem_id [6]; /* OEM identification */ \
29 u8 oem_table_id [8]; /* OEM table identification */ \
30 u32 oem_revision; /* OEM revision number */ \
31 u8 asl_compiler_id [4]; /* ASL compiler vendor ID */ \
32 u32 asl_compiler_revision; /* ASL compiler revision number */
Kevin O'Connor276d4a92008-06-11 22:47:01 -040033
34
35struct acpi_table_header /* ACPI common table header */
36{
Kevin O'Connord10e4442009-03-01 12:41:20 -050037 ACPI_TABLE_HEADER_DEF
Kevin O'Connore97ca7b2009-06-21 09:10:28 -040038} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -040039
40/*
41 * ACPI 1.0 Root System Description Table (RSDT)
42 */
Kevin O'Connor9967ab72008-12-18 21:57:33 -050043#define RSDT_SIGNATURE 0x54445352 // RSDT
Kevin O'Connor276d4a92008-06-11 22:47:01 -040044struct rsdt_descriptor_rev1
45{
Kevin O'Connord10e4442009-03-01 12:41:20 -050046 ACPI_TABLE_HEADER_DEF /* ACPI common table header */
47 u32 table_offset_entry [3]; /* Array of pointers to other */
48 /* ACPI tables */
Kevin O'Connore97ca7b2009-06-21 09:10:28 -040049} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -040050
51/*
52 * ACPI 1.0 Firmware ACPI Control Structure (FACS)
53 */
Kevin O'Connor9967ab72008-12-18 21:57:33 -050054#define FACS_SIGNATURE 0x53434146 // FACS
Kevin O'Connor276d4a92008-06-11 22:47:01 -040055struct facs_descriptor_rev1
56{
Kevin O'Connord10e4442009-03-01 12:41:20 -050057 u32 signature; /* ACPI Signature */
58 u32 length; /* Length of structure, in bytes */
59 u32 hardware_signature; /* Hardware configuration signature */
60 u32 firmware_waking_vector; /* ACPI OS waking vector */
61 u32 global_lock; /* Global Lock */
62 u32 S4bios_f : 1; /* Indicates if S4BIOS support is present */
63 u32 reserved1 : 31; /* Must be 0 */
64 u8 resverved3 [40]; /* Reserved - must be zero */
Kevin O'Connore97ca7b2009-06-21 09:10:28 -040065} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -040066
67
68/*
69 * ACPI 1.0 Fixed ACPI Description Table (FADT)
70 */
Kevin O'Connor9967ab72008-12-18 21:57:33 -050071#define FACP_SIGNATURE 0x50434146 // FACP
Kevin O'Connor276d4a92008-06-11 22:47:01 -040072struct fadt_descriptor_rev1
73{
Kevin O'Connord10e4442009-03-01 12:41:20 -050074 ACPI_TABLE_HEADER_DEF /* ACPI common table header */
75 u32 firmware_ctrl; /* Physical address of FACS */
76 u32 dsdt; /* Physical address of DSDT */
77 u8 model; /* System Interrupt Model */
78 u8 reserved1; /* Reserved */
79 u16 sci_int; /* System vector of SCI interrupt */
80 u32 smi_cmd; /* Port address of SMI command port */
81 u8 acpi_enable; /* Value to write to smi_cmd to enable ACPI */
82 u8 acpi_disable; /* Value to write to smi_cmd to disable ACPI */
83 u8 S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */
84 u8 reserved2; /* Reserved - must be zero */
85 u32 pm1a_evt_blk; /* Port address of Power Mgt 1a acpi_event Reg Blk */
86 u32 pm1b_evt_blk; /* Port address of Power Mgt 1b acpi_event Reg Blk */
87 u32 pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */
88 u32 pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */
89 u32 pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */
90 u32 pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */
91 u32 gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */
92 u32 gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */
93 u8 pm1_evt_len; /* Byte length of ports at pm1_x_evt_blk */
94 u8 pm1_cnt_len; /* Byte length of ports at pm1_x_cnt_blk */
95 u8 pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */
96 u8 pm_tmr_len; /* Byte Length of ports at pm_tm_blk */
97 u8 gpe0_blk_len; /* Byte Length of ports at gpe0_blk */
98 u8 gpe1_blk_len; /* Byte Length of ports at gpe1_blk */
99 u8 gpe1_base; /* Offset in gpe model where gpe1 events start */
100 u8 reserved3; /* Reserved */
101 u16 plvl2_lat; /* Worst case HW latency to enter/exit C2 state */
102 u16 plvl3_lat; /* Worst case HW latency to enter/exit C3 state */
103 u16 flush_size; /* Size of area read to flush caches */
104 u16 flush_stride; /* Stride used in flushing caches */
105 u8 duty_offset; /* Bit location of duty cycle field in p_cnt reg */
106 u8 duty_width; /* Bit width of duty cycle field in p_cnt reg */
107 u8 day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */
108 u8 mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */
109 u8 century; /* Index to century in RTC CMOS RAM */
110 u8 reserved4; /* Reserved */
111 u8 reserved4a; /* Reserved */
112 u8 reserved4b; /* Reserved */
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400113#if 0
Kevin O'Connord10e4442009-03-01 12:41:20 -0500114 u32 wb_invd : 1; /* The wbinvd instruction works properly */
115 u32 wb_invd_flush : 1; /* The wbinvd flushes but does not invalidate */
116 u32 proc_c1 : 1; /* All processors support C1 state */
117 u32 plvl2_up : 1; /* C2 state works on MP system */
118 u32 pwr_button : 1; /* Power button is handled as a generic feature */
119 u32 sleep_button : 1; /* Sleep button is handled as a generic feature, or not present */
120 u32 fixed_rTC : 1; /* RTC wakeup stat not in fixed register space */
121 u32 rtcs4 : 1; /* RTC wakeup stat not possible from S4 */
122 u32 tmr_val_ext : 1; /* The tmr_val width is 32 bits (0 = 24 bits) */
123 u32 reserved5 : 23; /* Reserved - must be zero */
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400124#else
Kevin O'Connord10e4442009-03-01 12:41:20 -0500125 u32 flags;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400126#endif
Kevin O'Connore97ca7b2009-06-21 09:10:28 -0400127} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400128
129/*
130 * MADT values and structures
131 */
132
133/* Values for MADT PCATCompat */
134
135#define DUAL_PIC 0
136#define MULTIPLE_APIC 1
137
138
139/* Master MADT */
140
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500141#define APIC_SIGNATURE 0x43495041 // APIC
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400142struct multiple_apic_table
143{
Kevin O'Connord10e4442009-03-01 12:41:20 -0500144 ACPI_TABLE_HEADER_DEF /* ACPI common table header */
145 u32 local_apic_address; /* Physical address of local APIC */
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400146#if 0
Kevin O'Connord10e4442009-03-01 12:41:20 -0500147 u32 PCATcompat : 1; /* A one indicates system also has dual 8259s */
148 u32 reserved1 : 31;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400149#else
Kevin O'Connord10e4442009-03-01 12:41:20 -0500150 u32 flags;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400151#endif
Kevin O'Connore97ca7b2009-06-21 09:10:28 -0400152} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400153
154
155/* Values for Type in APIC_HEADER_DEF */
156
157#define APIC_PROCESSOR 0
158#define APIC_IO 1
159#define APIC_XRUPT_OVERRIDE 2
160#define APIC_NMI 3
161#define APIC_LOCAL_NMI 4
162#define APIC_ADDRESS_OVERRIDE 5
163#define APIC_IO_SAPIC 6
164#define APIC_LOCAL_SAPIC 7
165#define APIC_XRUPT_SOURCE 8
166#define APIC_RESERVED 9 /* 9 and greater are reserved */
167
168/*
169 * MADT sub-structures (Follow MULTIPLE_APIC_DESCRIPTION_TABLE)
170 */
Kevin O'Connord10e4442009-03-01 12:41:20 -0500171#define APIC_HEADER_DEF /* Common APIC sub-structure header */\
172 u8 type; \
173 u8 length;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400174
175/* Sub-structures for MADT */
176
177struct madt_processor_apic
178{
Kevin O'Connord10e4442009-03-01 12:41:20 -0500179 APIC_HEADER_DEF
180 u8 processor_id; /* ACPI processor id */
181 u8 local_apic_id; /* Processor's local APIC id */
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400182#if 0
Kevin O'Connord10e4442009-03-01 12:41:20 -0500183 u32 processor_enabled: 1; /* Processor is usable if set */
184 u32 reserved2 : 31; /* Reserved, must be zero */
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400185#else
Kevin O'Connord10e4442009-03-01 12:41:20 -0500186 u32 flags;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400187#endif
Kevin O'Connore97ca7b2009-06-21 09:10:28 -0400188} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400189
190struct madt_io_apic
191{
Kevin O'Connord10e4442009-03-01 12:41:20 -0500192 APIC_HEADER_DEF
193 u8 io_apic_id; /* I/O APIC ID */
194 u8 reserved; /* Reserved - must be zero */
195 u32 address; /* APIC physical address */
196 u32 interrupt; /* Global system interrupt where INTI
197 * lines start */
Kevin O'Connore97ca7b2009-06-21 09:10:28 -0400198} PACKED;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400199
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500200#if CONFIG_KVM
201/* IRQs 5,9,10,11 */
202#define PCI_ISA_IRQ_MASK 0x0e20
203#else
204#define PCI_ISA_IRQ_MASK 0x0000
205#endif
206
207struct madt_intsrcovr {
208 APIC_HEADER_DEF
209 u8 bus;
210 u8 source;
211 u32 gsi;
212 u16 flags;
213} PACKED;
214
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400215#include "acpi-dsdt.hex"
216
217static inline u16 cpu_to_le16(u16 x)
218{
219 return x;
220}
221
222static inline u32 cpu_to_le32(u32 x)
223{
224 return x;
225}
226
227static void acpi_build_table_header(struct acpi_table_header *h,
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500228 u32 sig, int len, u8 rev)
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400229{
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500230 h->signature = sig;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400231 h->length = cpu_to_le32(len);
232 h->revision = rev;
Kevin O'Connor6cb8ba92008-08-17 11:03:24 -0400233 memcpy(h->oem_id, CONFIG_APPNAME6, 6);
234 memcpy(h->oem_table_id, CONFIG_APPNAME4, 4);
235 memcpy(h->asl_compiler_id, CONFIG_APPNAME4, 4);
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500236 memcpy(h->oem_table_id + 4, (void*)&sig, 4);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400237 h->oem_revision = cpu_to_le32(1);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400238 h->asl_compiler_revision = cpu_to_le32(1);
Kevin O'Connor94fd47e2009-02-15 15:21:10 -0500239 h->checksum = -checksum(h, len);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400240}
241
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500242#define SSDT_SIGNATURE 0x54445353// SSDT
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400243static int
244acpi_build_processor_ssdt(u8 *ssdt)
245{
246 u8 *ssdt_ptr = ssdt;
247 int i, length;
Kevin O'Connore97ca7b2009-06-21 09:10:28 -0400248 int smp_cpus = CountCPUs;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400249 int acpi_cpus = smp_cpus > 0xff ? 0xff : smp_cpus;
250
251 ssdt_ptr[9] = 0; // checksum;
252 ssdt_ptr += sizeof(struct acpi_table_header);
253
254 // caluculate the length of processor block and scope block excluding PkgLength
255 length = 0x0d * acpi_cpus + 4;
256
257 // build processor scope header
258 *(ssdt_ptr++) = 0x10; // ScopeOp
259 if (length <= 0x3e) {
260 *(ssdt_ptr++) = length + 1;
261 } else {
262 *(ssdt_ptr++) = 0x7F;
263 *(ssdt_ptr++) = (length + 2) >> 6;
264 }
265 *(ssdt_ptr++) = '_'; // Name
266 *(ssdt_ptr++) = 'P';
267 *(ssdt_ptr++) = 'R';
268 *(ssdt_ptr++) = '_';
269
270 // build object for each processor
271 for(i=0;i<acpi_cpus;i++) {
272 *(ssdt_ptr++) = 0x5B; // ProcessorOp
273 *(ssdt_ptr++) = 0x83;
274 *(ssdt_ptr++) = 0x0B; // Length
275 *(ssdt_ptr++) = 'C'; // Name (CPUxx)
276 *(ssdt_ptr++) = 'P';
277 if ((i & 0xf0) != 0)
278 *(ssdt_ptr++) = (i >> 4) < 0xa ? (i >> 4) + '0' : (i >> 4) + 'A' - 0xa;
279 else
280 *(ssdt_ptr++) = 'U';
281 *(ssdt_ptr++) = (i & 0xf) < 0xa ? (i & 0xf) + '0' : (i & 0xf) + 'A' - 0xa;
282 *(ssdt_ptr++) = i;
283 *(ssdt_ptr++) = 0x10; // Processor block address
284 *(ssdt_ptr++) = 0xb0;
285 *(ssdt_ptr++) = 0;
286 *(ssdt_ptr++) = 0;
287 *(ssdt_ptr++) = 6; // Processor block length
288 }
289
290 acpi_build_table_header((struct acpi_table_header *)ssdt,
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500291 SSDT_SIGNATURE, ssdt_ptr - ssdt, 1);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400292
293 return ssdt_ptr - ssdt;
294}
295
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500296struct rsdp_descriptor *RsdpAddr;
297
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400298/* base_addr must be a multiple of 4KB */
299void acpi_bios_init(void)
300{
Kevin O'Connord8a18112008-06-12 22:12:48 -0400301 if (! CONFIG_ACPI)
302 return;
303
Kevin O'Connor7b49cd92008-11-08 10:35:26 -0500304 dprintf(3, "init ACPI tables\n");
305
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400306 // This code is hardcoded for PIIX4 Power Management device.
Kevin O'Connor4132e022008-12-04 19:39:10 -0500307 int bdf = pci_find_device(PCI_VENDOR_ID_INTEL
308 , PCI_DEVICE_ID_INTEL_82371AB_3);
Kevin O'Connorbe19cdc2008-11-09 15:33:47 -0500309 if (bdf < 0)
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400310 // Device not found
311 return;
312
313 struct rsdp_descriptor *rsdp;
314 struct rsdt_descriptor_rev1 *rsdt;
315 struct fadt_descriptor_rev1 *fadt;
316 struct facs_descriptor_rev1 *facs;
317 struct multiple_apic_table *madt;
318 u8 *dsdt, *ssdt;
319 u32 base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr, ssdt_addr;
320 u32 acpi_tables_size, madt_addr, madt_size;
321 int i;
322
323 /* reserve memory space for tables */
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400324 bios_table_cur_addr = ALIGN(bios_table_cur_addr, 16);
Kevin O'Connord10e4442009-03-01 12:41:20 -0500325 rsdp = (void *)bios_table_cur_addr;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400326 bios_table_cur_addr += sizeof(*rsdp);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400327
Kevin O'Connore7916362008-12-28 22:03:17 -0500328 addr = base_addr = RamSize - CONFIG_ACPI_DATA_SIZE;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400329 add_e820(addr, CONFIG_ACPI_DATA_SIZE, E820_ACPI);
330 rsdt_addr = addr;
331 rsdt = (void *)(addr);
332 addr += sizeof(*rsdt);
333
334 fadt_addr = addr;
335 fadt = (void *)(addr);
336 addr += sizeof(*fadt);
337
Kevin O'Connore06363e2008-08-29 21:12:03 -0400338 addr = ALIGN(addr, 64);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400339 facs_addr = addr;
340 facs = (void *)(addr);
341 addr += sizeof(*facs);
342
343 dsdt_addr = addr;
344 dsdt = (void *)(addr);
345 addr += sizeof(AmlCode);
346
347 ssdt_addr = addr;
348 ssdt = (void *)(addr);
349 addr += acpi_build_processor_ssdt(ssdt);
350
Kevin O'Connore97ca7b2009-06-21 09:10:28 -0400351 int smp_cpus = CountCPUs;
Kevin O'Connore06363e2008-08-29 21:12:03 -0400352 addr = ALIGN(addr, 8);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400353 madt_addr = addr;
354 madt_size = sizeof(*madt) +
355 sizeof(struct madt_processor_apic) * smp_cpus +
356 sizeof(struct madt_io_apic);
357 madt = (void *)(addr);
358 addr += madt_size;
359
360 acpi_tables_size = addr - base_addr;
361
362 dprintf(1, "ACPI tables: RSDP addr=0x%08lx"
363 " ACPI DATA addr=0x%08lx size=0x%x\n",
364 (unsigned long)rsdp,
365 (unsigned long)rsdt, acpi_tables_size);
366
367 /* RSDP */
368 memset(rsdp, 0, sizeof(*rsdp));
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500369 rsdp->signature = RSDP_SIGNATURE;
Kevin O'Connor6cb8ba92008-08-17 11:03:24 -0400370 memcpy(rsdp->oem_id, CONFIG_APPNAME6, 6);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400371 rsdp->rsdt_physical_address = cpu_to_le32(rsdt_addr);
Kevin O'Connor94fd47e2009-02-15 15:21:10 -0500372 rsdp->checksum = -checksum(rsdp, 20);
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500373 RsdpAddr = rsdp;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400374
375 /* RSDT */
376 memset(rsdt, 0, sizeof(*rsdt));
377 rsdt->table_offset_entry[0] = cpu_to_le32(fadt_addr);
378 rsdt->table_offset_entry[1] = cpu_to_le32(madt_addr);
379 rsdt->table_offset_entry[2] = cpu_to_le32(ssdt_addr);
380 acpi_build_table_header((struct acpi_table_header *)rsdt,
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500381 RSDT_SIGNATURE, sizeof(*rsdt), 1);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400382
383 /* FADT */
384 memset(fadt, 0, sizeof(*fadt));
385 fadt->firmware_ctrl = cpu_to_le32(facs_addr);
386 fadt->dsdt = cpu_to_le32(dsdt_addr);
387 fadt->model = 1;
388 fadt->reserved1 = 0;
Kevin O'Connorbe19cdc2008-11-09 15:33:47 -0500389 int pm_sci_int = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400390 fadt->sci_int = cpu_to_le16(pm_sci_int);
Kevin O'Connore682cbc2008-12-06 23:11:56 -0500391 fadt->smi_cmd = cpu_to_le32(PORT_SMI_CMD);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400392 fadt->acpi_enable = 0xf1;
393 fadt->acpi_disable = 0xf0;
Kevin O'Connore682cbc2008-12-06 23:11:56 -0500394 fadt->pm1a_evt_blk = cpu_to_le32(PORT_ACPI_PM_BASE);
395 fadt->pm1a_cnt_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x04);
396 fadt->pm_tmr_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x08);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400397 fadt->pm1_evt_len = 4;
398 fadt->pm1_cnt_len = 2;
399 fadt->pm_tmr_len = 4;
400 fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
401 fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
402 /* WBINVD + PROC_C1 + PWR_BUTTON + SLP_BUTTON + FIX_RTC */
403 fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 4) | (1 << 5) | (1 << 6));
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500404 acpi_build_table_header((struct acpi_table_header *)fadt, FACP_SIGNATURE,
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400405 sizeof(*fadt), 1);
406
407 /* FACS */
408 memset(facs, 0, sizeof(*facs));
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500409 facs->signature = FACS_SIGNATURE;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400410 facs->length = cpu_to_le32(sizeof(*facs));
411
412 /* DSDT */
413 memcpy(dsdt, AmlCode, sizeof(AmlCode));
414
415 /* MADT */
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500416 memset(madt, 0, madt_size);
417 madt->local_apic_address = cpu_to_le32(BUILD_APIC_ADDR);
418 madt->flags = cpu_to_le32(1);
Kevin O'Connord10e4442009-03-01 12:41:20 -0500419 struct madt_processor_apic *apic = (void *)&madt[1];
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500420 for(i=0;i<smp_cpus;i++) {
421 apic->type = APIC_PROCESSOR;
422 apic->length = sizeof(*apic);
423 apic->processor_id = i;
424 apic->local_apic_id = i;
425 apic->flags = cpu_to_le32(1);
426 apic++;
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400427 }
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500428 struct madt_io_apic *io_apic = (void *)apic;
429 io_apic->type = APIC_IO;
430 io_apic->length = sizeof(*io_apic);
431 io_apic->io_apic_id = smp_cpus;
432 io_apic->address = cpu_to_le32(BUILD_IOAPIC_ADDR);
433 io_apic->interrupt = cpu_to_le32(0);
434
Kevin O'Connord10e4442009-03-01 12:41:20 -0500435 struct madt_intsrcovr *intsrcovr = (void*)&io_apic[1];
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500436 for (i = 0; i < 16; i++) {
Kevin O'Connord10e4442009-03-01 12:41:20 -0500437 if (!(PCI_ISA_IRQ_MASK & (1 << i)))
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500438 /* No need for a INT source override structure. */
439 continue;
Kevin O'Connord10e4442009-03-01 12:41:20 -0500440 memset(intsrcovr, 0, sizeof(*intsrcovr));
441 intsrcovr->type = APIC_XRUPT_OVERRIDE;
442 intsrcovr->length = sizeof(*intsrcovr);
443 intsrcovr->source = i;
444 intsrcovr->gsi = i;
445 intsrcovr->flags = 0xd; /* active high, level triggered */
Kevin O'Connor7061eb62009-01-04 21:48:22 -0500446 intsrcovr++;
447 madt_size += sizeof(struct madt_intsrcovr);
448 }
449
450 acpi_build_table_header((struct acpi_table_header *)madt,
451 APIC_SIGNATURE, madt_size, 1);
Kevin O'Connor276d4a92008-06-11 22:47:01 -0400452}
Kevin O'Connor9967ab72008-12-18 21:57:33 -0500453
454u32
455find_resume_vector()
456{
457 dprintf(4, "rsdp=%p\n", RsdpAddr);
458 if (!RsdpAddr || RsdpAddr->signature != RSDP_SIGNATURE)
459 return 0;
460 struct rsdt_descriptor_rev1 *rsdt = (void*)RsdpAddr->rsdt_physical_address;
461 dprintf(4, "rsdt=%p\n", rsdt);
462 if (!rsdt || rsdt->signature != RSDT_SIGNATURE)
463 return 0;
464 void *end = (void*)rsdt + rsdt->length;
465 int i;
466 for (i=0; (void*)&rsdt->table_offset_entry[i] < end; i++) {
467 struct fadt_descriptor_rev1 *fadt = (void*)rsdt->table_offset_entry[i];
468 if (!fadt || fadt->signature != FACP_SIGNATURE)
469 continue;
470 dprintf(4, "fadt=%p\n", fadt);
471 struct facs_descriptor_rev1 *facs = (void*)fadt->firmware_ctrl;
472 dprintf(4, "facs=%p\n", facs);
473 if (! facs || facs->signature != FACS_SIGNATURE)
474 return 0;
475 // Found it.
476 dprintf(4, "resume addr=%d\n", facs->firmware_waking_vector);
477 return facs->firmware_waking_vector;
478 }
479 return 0;
480}