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Root/branches/mozodojo/i386/libsaio/acpi_patcher.c

1/*
2 * Copyright 2008 mackerintel
3 */
4
5#include "libsaio.h"
6#include "boot.h"
7#include "bootstruct.h"
8#include "acpi.h"
9#include "efi_tables.h"
10#include "fake_efi.h"
11#include "acpi_patcher.h"
12#include "platform.h"
13#include "cpu.h"
14#include "aml_generator.h"
15
16#ifndef DEBUG_ACPI
17#define DEBUG_ACPI 0
18#endif
19
20#if DEBUG_ACPI==2
21#define DBG(x...) {printf(x); sleep(1);}
22#elif DEBUG_ACPI==1
23#define DBG(x...) printf(x)
24#else
25#define DBG(x...)
26#endif
27
28// Slice: New signature compare function
29boolean_t tableSign(char *table, const char *sgn)
30{
31int i;
32for (i=0; i<4; i++) {
33if ((table[i] &~0x20) != (sgn[i] &~0x20)) {
34return FALSE;
35}
36}
37return TRUE;
38}
39
40/* Gets the ACPI 1.0 RSDP address */
41static struct acpi_2_rsdp* getAddressOfAcpiTable()
42{
43 /* TODO: Before searching the BIOS space we are supposed to search the first 1K of the EBDA */
44
45 void *acpi_addr = (void*)ACPI_RANGE_START;
46 for(; acpi_addr <= (void*)ACPI_RANGE_END; acpi_addr += 16)
47 {
48 if(*(uint64_t *)acpi_addr == ACPI_SIGNATURE_UINT64_LE)
49 {
50 uint8_t csum = checksum8(acpi_addr, 20);
51 if(csum == 0)
52 {
53 // Only return the table if it is a true version 1.0 table (Revision 0)
54 if(((struct acpi_2_rsdp*)acpi_addr)->Revision == 0)
55 return acpi_addr;
56 }
57 }
58 }
59 return NULL;
60}
61
62/* Gets the ACPI 2.0 RSDP address */
63static struct acpi_2_rsdp* getAddressOfAcpi20Table()
64{
65 /* TODO: Before searching the BIOS space we are supposed to search the first 1K of the EBDA */
66
67 void *acpi_addr = (void*)ACPI_RANGE_START;
68 for(; acpi_addr <= (void*)ACPI_RANGE_END; acpi_addr += 16)
69 {
70 if(*(uint64_t *)acpi_addr == ACPI_SIGNATURE_UINT64_LE)
71 {
72 uint8_t csum = checksum8(acpi_addr, 20);
73
74 /* Only assume this is a 2.0 or better table if the revision is greater than 0
75 * NOTE: ACPI 3.0 spec only seems to say that 1.0 tables have revision 1
76 * and that the current revision is 2.. I am going to assume that rev > 0 is 2.0.
77 */
78
79 if(csum == 0 && (((struct acpi_2_rsdp*)acpi_addr)->Revision > 0))
80 {
81 uint8_t csum2 = checksum8(acpi_addr, sizeof(struct acpi_2_rsdp));
82 if(csum2 == 0)
83 return acpi_addr;
84 }
85 }
86 }
87 return NULL;
88}
89/** The folowing ACPI Table search algo. should be reused anywhere needed:*/
90int search_and_get_acpi_fd(const char * filename, const char ** outDirspec)
91{
92int fd=0;
93const char * overriden_pathname=NULL;
94static char dirspec[512]="";
95static bool first_time =true;
96int len=0;
97
98/// Take in accound user overriding if it's DSDT only
99if (strstr(filename, "DSDT") &&
100getValueForKey(kDSDT, &overriden_pathname, &len,
101 &bootInfo->bootConfig))
102 {
103sprintf(dirspec, "%s", overriden_pathname);
104fd=open (dirspec,0);
105if (fd>=0) goto success_fd;
106 }
107// Check that dirspec is not already assigned with a path
108if (!first_time && *dirspec)
109{ // it is so start searching this cached patch first
110//extract path
111for (len=strlen(dirspec)-1; len; len--)
112if (dirspec[len]=='/' || len==0)
113{
114dirspec[len]='\0';
115break;
116}
117// now concat with the filename
118strncat(dirspec, "/", sizeof(dirspec));
119strncat(dirspec, filename, sizeof(dirspec));
120// and test to see if we don't have our big boy here:
121fd=open (dirspec,0);
122if (fd>=0)
123{
124// printf("ACPI file search cache hit: file found at %s\n", dirspec);
125goto success_fd;
126}
127}
128// Start searching any potential location for ACPI Table
129// search the Extra folders first
130sprintf(dirspec,"/Extra/%s",filename);
131fd=open (dirspec,0);
132if (fd>=0) goto success_fd;
133
134sprintf(dirspec,"bt(0,0)/Extra/%s",filename);
135fd=open (dirspec,0);
136if (fd>=0) goto success_fd;
137
138sprintf(dirspec, "%s", filename); // search current dir
139fd=open (dirspec,0);
140if (fd>=0) goto success_fd;
141
142sprintf(dirspec, "/%s", filename); // search root
143fd=open (dirspec,0);
144if (fd>=0) goto success_fd;
145
146// NOT FOUND:
147//verbose("ACPI Table not found: %s\n", filename);
148if (outDirspec) *outDirspec = "";
149first_time = false;
150return -1;
151// FOUND
152success_fd:
153first_time = false;
154if (outDirspec) *outDirspec = dirspec;
155return fd;
156}
157
158void *loadACPITable (const char * filename)
159{
160void *tableAddr;
161const char * dirspec=NULL;
162
163int fd = search_and_get_acpi_fd(filename, &dirspec);
164
165if (fd>=0)
166{
167tableAddr=(void*)AllocateKernelMemory(file_size (fd));
168if (tableAddr)
169{
170if (read (fd, tableAddr, file_size (fd))!=file_size (fd))
171{
172printf("Couldn't read table %s\n",dirspec);
173free (tableAddr);
174close (fd);
175return NULL;
176}
177
178DBG("Table %s read and stored at: %x\n", dirspec, tableAddr);
179close (fd);
180return tableAddr;
181}
182close (fd);
183printf("Couldn't allocate memory for table \n", dirspec);
184}
185//printf("Couldn't find table %s\n", filename);
186return NULL;
187}
188
189uint8_tacpi_cpu_count = 0;
190char* acpi_cpu_name[32];
191
192void get_acpi_cpu_names(unsigned char* dsdt, int length)
193{
194int i;
195
196for (i=0; i<length-7; i++)
197{
198if (dsdt[i] == 0x5B && dsdt[i+1] == 0x83) // ProcessorOP
199{
200uint8_t offset = i+2+(dsdt[i+2] >> 6) + 1, j;
201bool add_name = TRUE;
202
203for (j=0; j<4; j++)
204{
205char c = dsdt[offset+j];
206
207if (!aml_isvalidchar(c))
208{
209add_name = FALSE;
210verbose("Invalid characters found in ProcessorOP!\n");
211break;
212}
213}
214
215if (add_name && dsdt[offset+4] < 32 )
216{
217acpi_cpu_name[acpi_cpu_count] = malloc(4);
218memcpy(acpi_cpu_name[acpi_cpu_count], dsdt+offset, 4);
219i = offset + 5;
220
221verbose("Found %c%c%c%c (from DSDT)\n", acpi_cpu_name[acpi_cpu_count][0], acpi_cpu_name[acpi_cpu_count][1], acpi_cpu_name[acpi_cpu_count][2], acpi_cpu_name[acpi_cpu_count][3]);
222
223if (++acpi_cpu_count == 32) return;
224}
225}
226}
227}
228
229struct acpi_2_ssdt *generate_cst_ssdt(struct acpi_2_fadt* fadt)
230{
231char ssdt_header[] =
232{
2330x53, 0x53, 0x44, 0x54, 0xE7, 0x00, 0x00, 0x00, /* SSDT.... */
2340x01, 0x17, 0x50, 0x6D, 0x52, 0x65, 0x66, 0x41, /* ..PmRefA */
2350x43, 0x70, 0x75, 0x43, 0x73, 0x74, 0x00, 0x00, /* CpuCst.. */
2360x00, 0x10, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* ....INTL */
2370x31, 0x03, 0x10, 0x20 /* 1.._*/
238};
239
240char cstate_resource_template[] =
241{
2420x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F,
2430x01, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
2440x00, 0x00, 0x00, 0x79, 0x00
245};
246
247if (Platform.CPU.Vendor != 0x756E6547) {
248verbose ("Not an Intel platform: C-States will not be generated !!!\n");
249return NULL;
250}
251
252if (fadt == NULL) {
253verbose ("FACP not exists: C-States not generated !!!\n");
254return NULL;
255}
256
257struct acpi_2_dsdt* dsdt = (void*)fadt->DSDT;
258
259if (dsdt == NULL) {
260verbose ("DSDT not found: C-States not generated !!!\n");
261return NULL;
262}
263
264if (acpi_cpu_count == 0)
265get_acpi_cpu_names((void*)dsdt, dsdt->Length);
266
267if (acpi_cpu_count > 0)
268{
269bool c2_enabled = fadt->C2_Latency < 100;
270bool c3_enabled = fadt->C3_Latency < 1000;
271
272unsigned char cstates_count = 1 + (c2_enabled ? 1 : 0) + (c3_enabled ? 1 : 0);
273
274struct aml_chunk* root = aml_create_node(NULL);
275aml_add_buffer(root, ssdt_header, sizeof(ssdt_header)); // SSDT header
276struct aml_chunk* scop = aml_add_scope(root, "\\_PR_");
277struct aml_chunk* name = aml_add_name(scop, "CST_");
278struct aml_chunk* pack = aml_add_package(name);
279aml_add_byte(pack, cstates_count);
280
281struct aml_chunk* tmpl = aml_add_package(pack);
282cstate_resource_template[11] = 0x10; // C1
283aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));
284aml_add_byte(tmpl, 0x01); // C1
285aml_add_byte(tmpl, 0x01); // Latency
286aml_add_word(tmpl, 0x03e8); // Power
287
288// C2
289if (c2_enabled)
290{
291tmpl = aml_add_package(pack);
292cstate_resource_template[11] = 0x20; // C2
293aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));
294aml_add_byte(tmpl, 0x02); // C2
295aml_add_byte(tmpl, fadt->C2_Latency);
296aml_add_word(tmpl, 0x01f4); // Power
297}
298// C3
299if (c3_enabled)
300{
301tmpl = aml_add_package(pack);
302cstate_resource_template[11] = 0x30; // C3
303aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));
304aml_add_byte(tmpl, 0x03); // C3
305aml_add_word(tmpl, fadt->C3_Latency);
306aml_add_word(tmpl, 0x015e); // Power
307}
308
309// Aliaces
310int i;
311for (i = 0; i < acpi_cpu_count; i++)
312{
313char name[9];
314sprintf(name, "_PR_%c%c%c%c", acpi_cpu_name[i][0], acpi_cpu_name[i][1], acpi_cpu_name[i][2], acpi_cpu_name[i][3]);
315
316scop = aml_add_scope(root, name);
317aml_add_alias(scop, "CST_", "_CST");
318}
319
320
321aml_calculate_size(root);
322
323struct acpi_2_ssdt *ssdt = (struct acpi_2_ssdt *)AllocateKernelMemory(root->Size);
324
325aml_write_node(root, (void*)ssdt, 0);
326
327ssdt->Length = root->Size;
328ssdt->Checksum = 0;
329ssdt->Checksum = 256 - checksum8(ssdt, ssdt->Length);
330
331aml_destroy_node(root);
332
333//dumpPhysAddr("C-States SSDT content: ", ssdt, ssdt->Length);
334
335verbose ("SSDT with CPU C-States generated successfully\n");
336
337return ssdt;
338}
339else
340{
341verbose ("DSDT CPUs not found: C-States not generated !!!\n");
342}
343
344return NULL;
345}
346
347struct acpi_2_ssdt *generate_pss_ssdt(struct acpi_2_dsdt* dsdt)
348{
349char ssdt_header[] =
350{
3510x53, 0x53, 0x44, 0x54, 0x7E, 0x00, 0x00, 0x00, /* SSDT.... */
3520x01, 0x6A, 0x50, 0x6D, 0x52, 0x65, 0x66, 0x00, /* ..PmRef. */
3530x43, 0x70, 0x75, 0x50, 0x6D, 0x00, 0x00, 0x00, /* CpuPm... */
3540x00, 0x30, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* .0..INTL */
3550x31, 0x03, 0x10, 0x20,/* 1.._*/
356};
357
358if (Platform.CPU.Vendor != 0x756E6547) {
359verbose ("Not an Intel platform: P-States will not be generated !!!\n");
360return NULL;
361}
362
363if (!(Platform.CPU.Features & CPU_FEATURE_MSR)) {
364verbose ("Unsupported CPU: P-States will not be generated !!!\n");
365return NULL;
366}
367
368if (acpi_cpu_count == 0)
369get_acpi_cpu_names((void*)dsdt, dsdt->Length);
370
371if (acpi_cpu_count > 0)
372{
373bool cpu_dynamic_fsb = false, cpu_noninteger_bus_ratio = (rdmsr64(MSR_IA32_PERF_STATUS) & (1ULL << 46));
374struct p_state initial, maximum, minimum, p_states[32];
375uint8_t p_states_count;
376
377// Retrieving P-States, ported from code by superhai (c)
378switch (Platform.CPU.Family) {
379case 0x06:
380{
381switch (Platform.CPU.Model)
382{
383case 0x0F: // Intel Core (65nm)
384case 0x17: // Intel Core (45nm)
385case 0x1C: // Intel Atom (45nm)
386case 0x1A: // Intel Core i7 LGA1366 (45nm)
387case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)
388case 0x1F:
389case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)
390case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core
391case 0x2F:
392if (rdmsr64(MSR_IA32_EXT_CONFIG) & (1 << 27))
393{
394wrmsr64(MSR_IA32_EXT_CONFIG, (rdmsr64(MSR_IA32_EXT_CONFIG) | (1 << 28)));
395delay(1);
396cpu_dynamic_fsb = rdmsr64(MSR_IA32_EXT_CONFIG) & (1 << 28);
397}
398break;
399}
400}
401}
402
403initial.Control = rdmsr64(MSR_IA32_PERF_STATUS);
404
405maximum.Control = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 32) & 0x1F3F) | (0x4000 * cpu_noninteger_bus_ratio);
406maximum.CID = ((maximum.FID & 0x1F) << 1) | cpu_noninteger_bus_ratio;
407
408minimum.FID = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 24) & 0x1F) | (0x80 * cpu_dynamic_fsb);
409minimum.VID = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 48) & 0x3F);
410
411if (minimum.FID == 0)
412{
413uint8_t i;
414// Probe for lowest fid
415for (i = maximum.FID; i >= 0x6; i--)
416{
417wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (i << 8) | minimum.VID);
418intel_waitforsts();
419minimum.FID = (rdmsr64(MSR_IA32_PERF_STATUS) >> 8) & 0x1F;
420delay(1);
421}
422
423wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (maximum.FID << 8) | maximum.VID);
424intel_waitforsts();
425}
426
427if (minimum.VID == maximum.VID)
428{
429uint8_t i;
430// Probe for lowest vid
431for (i = maximum.VID; i > 0xA; i--)
432{
433wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (minimum.FID << 8) | i);
434intel_waitforsts();
435minimum.VID = rdmsr64(MSR_IA32_PERF_STATUS) & 0x3F;
436delay(1);
437}
438
439wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (maximum.FID << 8) | maximum.VID);
440intel_waitforsts();
441}
442
443minimum.CID = ((minimum.FID & 0x1F) << 1) >> cpu_dynamic_fsb;
444
445// Sanity check
446if (maximum.CID < minimum.CID)
447{
448DBG("Insane FID values!");
449p_states_count = 1;
450}
451else
452{
453// Finalize P-States
454// Find how many P-States machine supports
455p_states_count = maximum.CID - minimum.CID + 1;
456
457if (p_states_count > 32)
458p_states_count = 32;
459
460uint8_t vidstep;
461uint8_t i = 0, u, invalid = 0;
462
463vidstep = ((maximum.VID << 2) - (minimum.VID << 2)) / (p_states_count - 1);
464
465for (u = 0; u < p_states_count; u++)
466{
467i = u - invalid;
468
469p_states[i].CID = maximum.CID - u;
470p_states[i].FID = (p_states[i].CID >> 1);
471
472if (p_states[i].FID < 0x6)
473{
474if (cpu_dynamic_fsb)
475p_states[i].FID = (p_states[i].FID << 1) | 0x80;
476}
477else if (cpu_noninteger_bus_ratio)
478{
479p_states[i].FID = p_states[i].FID | (0x40 * (p_states[i].CID & 0x1));
480}
481
482if (i && p_states[i].FID == p_states[i-1].FID)
483invalid++;
484
485p_states[i].VID = ((maximum.VID << 2) - (vidstep * u)) >> 2;
486
487uint32_t multiplier = p_states[i].FID & 0x1f;// = 0x08
488bool half = p_states[i].FID & 0x40;// = 0x01
489bool dfsb = p_states[i].FID & 0x80;// = 0x00
490uint32_t fsb = Platform.CPU.FSBFrequency / 1000000; // = 400
491uint32_t halffsb = (fsb + 1) >> 1;// = 200
492uint32_t frequency = (multiplier * fsb);// = 3200
493
494p_states[i].Frequency = (frequency + (half * halffsb)) >> dfsb;// = 3200 + 200 = 3400
495}
496
497p_states_count -= invalid;
498}
499
500// Generating SSDT
501
502if (p_states_count > 0)
503{
504int i;
505
506struct aml_chunk* root = aml_create_node(NULL);
507aml_add_buffer(root, ssdt_header, sizeof(ssdt_header)); // SSDT header
508struct aml_chunk* scop = aml_add_scope(root, "\\_PR_");
509struct aml_chunk* name = aml_add_name(scop, "PSS_");
510struct aml_chunk* pack = aml_add_package(name);
511
512for (i = 0; i < p_states_count; i++)
513{
514struct aml_chunk* pstt = aml_add_package(pack);
515
516aml_add_dword(pstt, p_states[i].Frequency);
517aml_add_dword(pstt, 0x00000000); // Power
518aml_add_dword(pstt, 0x0000000A); // Latency
519aml_add_dword(pstt, 0x0000000A); // Latency
520aml_add_dword(pstt, p_states[i].Control);
521aml_add_dword(pstt, i+1); // Status
522}
523
524// Add aliaces
525for (i = 0; i < acpi_cpu_count; i++)
526{
527char name[9];
528sprintf(name, "_PR_%c%c%c%c", acpi_cpu_name[i][0], acpi_cpu_name[i][1], acpi_cpu_name[i][2], acpi_cpu_name[i][3]);
529
530scop = aml_add_scope(root, name);
531aml_add_alias(scop, "PSS_", "_PSS");
532}
533
534aml_calculate_size(root);
535
536struct acpi_2_ssdt *ssdt = (struct acpi_2_ssdt *)AllocateKernelMemory(root->Size);
537
538aml_write_node(root, (void*)ssdt, 0);
539
540ssdt->Length = root->Size;
541ssdt->Checksum = 0;
542ssdt->Checksum = 256 - checksum8(ssdt, ssdt->Length);
543
544aml_destroy_node(root);
545
546//dumpPhysAddr("P-States SSDT content: ", ssdt, ssdt->Length);
547
548verbose ("SSDT with CPU P-States generated successfully\n");
549
550return ssdt;
551}
552}
553else {
554verbose ("DSDT CPUs not found: P-States not generated !!!\n");
555}
556
557return NULL;
558}
559
560struct acpi_2_fadt *patch_fadt(struct acpi_2_fadt *fadt, struct acpi_2_dsdt *new_dsdt)
561{
562extern void setupSystemType();
563
564struct acpi_2_fadt *fadt_mod;
565bool fadt_rev2_needed = false;
566bool fix_restart;
567const char * value;
568
569// Restart Fix
570if (Platform.CPU.Vendor == 0x756E6547) {/* Intel */
571fix_restart = true;
572getBoolForKey(kRestartFix, &fix_restart, &bootInfo->bootConfig);
573} else {
574verbose ("Not an Intel platform: Restart Fix not applied !!!\n");
575fix_restart = false;
576}
577
578if (fix_restart) fadt_rev2_needed = true;
579
580// Allocate new fadt table
581if (fadt->Length < 0x84 && fadt_rev2_needed)
582{
583fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(0x84);
584memcpy(fadt_mod, fadt, fadt->Length);
585fadt_mod->Length = 0x84;
586fadt_mod->Revision = 0x02; // FADT rev 2 (ACPI 1.0B MS extensions)
587}
588else
589{
590fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(fadt->Length);
591memcpy(fadt_mod, fadt, fadt->Length);
592}
593// Determine system type / PM_Model
594if ( (value=getStringForKey(kSystemType, &bootInfo->bootConfig))!=NULL)
595{
596if (Platform.Type > 6)
597{
598if(fadt_mod->PM_Profile<=6)
599Platform.Type = fadt_mod->PM_Profile; // get the fadt if correct
600else
601Platform.Type = 1;/* Set a fixed value (Desktop) */
602verbose("Error: system-type must be 0..6. Defaulting to %d !\n", Platform.Type);
603}
604else
605Platform.Type = (unsigned char) strtoul(value, NULL, 10);
606}
607// Set PM_Profile from System-type if only if user wanted this value to be forced
608if (fadt_mod->PM_Profile != Platform.Type)
609{
610 if (value)
611{ // user has overriden the SystemType so take care of it in FACP
612verbose("FADT: changing PM_Profile from 0x%02x to 0x%02x\n", fadt_mod->PM_Profile, Platform.Type);
613fadt_mod->PM_Profile = Platform.Type;
614 }
615 else
616 { // PM_Profile has a different value and no override has been set, so reflect the user value to ioregs
617Platform.Type = fadt_mod->PM_Profile <= 6 ? fadt_mod->PM_Profile : 1;
618 }
619}
620// We now have to write the systemm-type in ioregs: we cannot do it before in setupDeviceTree()
621// because we need to take care of facp original content, if it is correct.
622setupSystemType();
623
624// Patch FADT to fix restart
625if (fix_restart)
626{
627fadt_mod->Flags|= 0x400;
628fadt_mod->Reset_SpaceID= 0x01; // System I/O
629fadt_mod->Reset_BitWidth= 0x08; // 1 byte
630fadt_mod->Reset_BitOffset= 0x00; // Offset 0
631fadt_mod->Reset_AccessWidth= 0x01; // Byte access
632fadt_mod->Reset_Address= 0x0cf9; // Address of the register
633fadt_mod->Reset_Value= 0x06; // Value to write to reset the system
634verbose("FADT: Restart Fix applied!\n");
635}
636
637// Patch DSDT Address if we have loaded DSDT.aml
638if(new_dsdt)
639{
640DBG("DSDT: Old @%x,%x, ",fadt_mod->DSDT,fadt_mod->X_DSDT);
641
642fadt_mod->DSDT=(uint32_t)new_dsdt;
643if ((uint32_t)(&(fadt_mod->X_DSDT))-(uint32_t)fadt_mod+8<=fadt_mod->Length)
644fadt_mod->X_DSDT=(uint32_t)new_dsdt;
645
646DBG("New @%x,%x\n",fadt_mod->DSDT,fadt_mod->X_DSDT);
647
648verbose("FADT: Using custom DSDT!\n");
649}
650
651// Correct the checksum
652fadt_mod->Checksum=0;
653fadt_mod->Checksum=256-checksum8(fadt_mod,fadt_mod->Length);
654
655return fadt_mod;
656}
657
658/* Setup ACPI without replacing DSDT. */
659int setupAcpiNoMod()
660{
661//addConfigurationTable(&gEfiAcpiTableGuid, getAddressOfAcpiTable(), "ACPI");
662//addConfigurationTable(&gEfiAcpi20TableGuid, getAddressOfAcpi20Table(), "ACPI_20");
663/* XXX aserebln why uint32 cast if pointer is uint64 ? */
664acpi10_p = (uint32_t)getAddressOfAcpiTable();
665acpi20_p = (uint32_t)getAddressOfAcpi20Table();
666addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");
667if(acpi20_p) addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");
668return 1;
669}
670
671/* Setup ACPI. Replace DSDT if DSDT.aml is found */
672int setupAcpi(void)
673{
674int version;
675void *new_dsdt;
676
677// Load replacement DSDT
678new_dsdt=loadACPITable("DSDT.aml");
679// Mozodojo: going to patch FACP and load SSDT's even if DSDT.aml is not present
680/*if (!new_dsdt)
681 {
682 return setupAcpiNoMod();
683 }*/
684
685// Mozodojo: Load additional SSDTs
686struct acpi_2_ssdt *new_ssdt[32]; // 30 + 2 additional tables for pss & cst
687int ssdt_count=0;
688
689// TEST!
690/*if(new_ssdt[ssdt_count] = generate_test_ssdt())
691ssdt_count++;*/
692
693// SSDT Options
694bool drop_ssdt=false, generate_pstates=false, generate_cstates=false;
695
696getBoolForKey(kDropSSDT, &drop_ssdt, &bootInfo->bootConfig);
697getBoolForKey(kGeneratePStates, &generate_pstates, &bootInfo->bootConfig);
698getBoolForKey(kGenerateCStates, &generate_cstates, &bootInfo->bootConfig);
699
700{
701int i;
702
703for (i=0; i<30; i++)
704{
705char filename[512];
706
707sprintf(filename, i>0?"SSDT-%d.aml":"SSDT.aml", i);
708
709if(new_ssdt[ssdt_count] = loadACPITable(filename))
710{
711ssdt_count++;
712}
713else
714{
715break;
716}
717}
718}
719
720// Do the same procedure for both versions of ACPI
721for (version=0; version<2; version++) {
722struct acpi_2_rsdp *rsdp, *rsdp_mod;
723struct acpi_2_rsdt *rsdt, *rsdt_mod;
724int rsdplength;
725
726// Find original rsdp
727rsdp=(struct acpi_2_rsdp *)(version?getAddressOfAcpi20Table():getAddressOfAcpiTable());
728if (!rsdp)
729{
730DBG("No ACPI version %d found. Ignoring\n", version+1);
731if (version)
732addConfigurationTable(&gEfiAcpi20TableGuid, NULL, "ACPI_20");
733else
734addConfigurationTable(&gEfiAcpiTableGuid, NULL, "ACPI");
735continue;
736}
737rsdplength=version?rsdp->Length:20;
738
739DBG("RSDP version %d found @%x. Length=%d\n",version+1,rsdp,rsdplength);
740
741/* FIXME: no check that memory allocation succeeded
742 * Copy and patch RSDP,RSDT, XSDT and FADT
743 * For more info see ACPI Specification pages 110 and following
744 */
745
746rsdp_mod=(struct acpi_2_rsdp *) AllocateKernelMemory(rsdplength);
747memcpy(rsdp_mod, rsdp, rsdplength);
748rsdt=(struct acpi_2_rsdt *)(rsdp->RsdtAddress);
749
750DBG("RSDT @%x, Length %d\n",rsdt, rsdt->Length);
751
752if (rsdt && (uint32_t)rsdt !=0xffffffff && rsdt->Length<0x10000)
753{
754uint32_t *rsdt_entries;
755int rsdt_entries_num;
756int dropoffset=0, i;
757
758// mozo: using malloc cos I didn't found how to free already allocated kernel memory
759rsdt_mod=(struct acpi_2_rsdt *)malloc(rsdt->Length);
760memcpy (rsdt_mod, rsdt, rsdt->Length);
761rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;
762rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;
763rsdt_entries=(uint32_t *)(rsdt_mod+1);
764for (i=0;i<rsdt_entries_num;i++)
765{
766char *table=(char *)(rsdt_entries[i]);
767if (!table)
768continue;
769
770DBG("TABLE %c%c%c%c,",table[0],table[1],table[2],table[3]);
771
772rsdt_entries[i-dropoffset]=rsdt_entries[i];
773
774if (drop_ssdt && tableSign(table, "SSDT"))
775{
776dropoffset++;
777continue;
778}
779if (tableSign(table, "DSDT"))
780{
781DBG("DSDT found\n");
782
783if(new_dsdt)
784rsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;
785
786continue;
787}
788if (tableSign(table, "FACP"))
789{
790struct acpi_2_fadt *fadt, *fadt_mod;
791fadt=(struct acpi_2_fadt *)rsdt_entries[i];
792
793DBG("FADT found @%x, Length %d\n",fadt, fadt->Length);
794
795if (!fadt || (uint32_t)fadt == 0xffffffff || fadt->Length>0x10000)
796{
797printf("FADT incorrect. Not modified\n");
798continue;
799}
800
801fadt_mod = patch_fadt(fadt, new_dsdt);
802rsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;
803
804// Generate _CST SSDT
805if (generate_cstates && (new_ssdt[ssdt_count] = generate_cst_ssdt(fadt_mod)))
806{
807generate_cstates = FALSE; // Generate SSDT only once!
808ssdt_count++;
809}
810
811// Generating _PSS SSDT
812if (generate_pstates && (new_ssdt[ssdt_count] = generate_pss_ssdt((void*)fadt_mod->DSDT)))
813{
814generate_pstates = FALSE; // Generate SSDT only once!
815ssdt_count++;
816}
817
818continue;
819}
820}
821DBG("\n");
822
823// Allocate rsdt in Kernel memory area
824rsdt_mod->Length += 4*ssdt_count - 4*dropoffset;
825struct acpi_2_rsdt *rsdt_copy = (struct acpi_2_rsdt *)AllocateKernelMemory(rsdt_mod->Length);
826memcpy (rsdt_copy, rsdt_mod, rsdt_mod->Length);
827free(rsdt_mod); rsdt_mod = rsdt_copy;
828rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;
829rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;
830rsdt_entries=(uint32_t *)(rsdt_mod+1);
831
832// Mozodojo: Insert additional SSDTs into RSDT
833if(ssdt_count>0)
834{
835int j;
836
837for (j=0; j<ssdt_count; j++)
838rsdt_entries[i-dropoffset+j]=(uint32_t)new_ssdt[j];
839
840verbose("RSDT: Added %d SSDT table(s)\n", ssdt_count);
841}
842
843// Correct the checksum of RSDT
844DBG("RSDT: Original checksum %d, ", rsdt_mod->Checksum);
845
846rsdt_mod->Checksum=0;
847rsdt_mod->Checksum=256-checksum8(rsdt_mod,rsdt_mod->Length);
848
849DBG("New checksum %d at %x\n", rsdt_mod->Checksum,rsdt_mod);
850}
851else
852{
853rsdp_mod->RsdtAddress=0;
854printf("RSDT not found or RSDT incorrect\n");
855}
856
857if (version)
858{
859struct acpi_2_xsdt *xsdt, *xsdt_mod;
860
861// FIXME: handle 64-bit address correctly
862
863xsdt=(struct acpi_2_xsdt*) ((uint32_t)rsdp->XsdtAddress);
864DBG("XSDT @%x;%x, Length=%d\n", (uint32_t)(rsdp->XsdtAddress>>32),(uint32_t)rsdp->XsdtAddress,
865xsdt->Length);
866if (xsdt && (uint64_t)rsdp->XsdtAddress<0xffffffff && xsdt->Length<0x10000)
867{
868uint64_t *xsdt_entries;
869int xsdt_entries_num, i;
870int dropoffset=0;
871
872// mozo: using malloc cos I didn't found how to free already allocated kernel memory
873xsdt_mod=(struct acpi_2_xsdt*)malloc(xsdt->Length);
874memcpy(xsdt_mod, xsdt, xsdt->Length);
875rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;
876xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;
877xsdt_entries=(uint64_t *)(xsdt_mod+1);
878for (i=0;i<xsdt_entries_num;i++)
879{
880char *table=(char *)((uint32_t)(xsdt_entries[i]));
881if (!table)
882continue;
883
884xsdt_entries[i-dropoffset]=xsdt_entries[i];
885
886if (drop_ssdt && tableSign(table, "SSDT"))
887{
888dropoffset++;
889continue;
890}
891if (tableSign(table, "DSDT"))
892{
893DBG("DSDT found\n");
894
895if (new_dsdt)
896xsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;
897
898DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);
899
900continue;
901}
902if (tableSign(table, "FACP"))
903{
904struct acpi_2_fadt *fadt, *fadt_mod;
905fadt=(struct acpi_2_fadt *)(uint32_t)xsdt_entries[i];
906
907DBG("FADT found @%x,%x, Length %d\n",(uint32_t)(xsdt_entries[i]>>32),fadt,
908fadt->Length);
909
910if (!fadt || (uint64_t)xsdt_entries[i] >= 0xffffffff || fadt->Length>0x10000)
911{
912verbose("FADT incorrect or after 4GB. Dropping XSDT\n");
913goto drop_xsdt;
914}
915
916fadt_mod = patch_fadt(fadt, new_dsdt);
917xsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;
918
919DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);
920
921// Generate _CST SSDT
922if (generate_cstates && (new_ssdt[ssdt_count] = generate_cst_ssdt(fadt_mod)))
923{
924generate_cstates = FALSE; // Generate SSDT only once!
925ssdt_count++;
926}
927
928// Generating _PSS SSDT
929if (generate_pstates && (new_ssdt[ssdt_count] = generate_pss_ssdt((void*)fadt_mod->DSDT)))
930{
931generate_pstates = FALSE; // Generate SSDT only once!
932ssdt_count++;
933}
934
935continue;
936}
937
938DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);
939
940}
941
942// Allocate xsdt in Kernel memory area
943xsdt_mod->Length += 8*ssdt_count - 8*dropoffset;
944struct acpi_2_xsdt *xsdt_copy = (struct acpi_2_xsdt *)AllocateKernelMemory(xsdt_mod->Length);
945memcpy(xsdt_copy, xsdt_mod, xsdt_mod->Length);
946free(xsdt_mod); xsdt_mod = xsdt_copy;
947rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;
948xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;
949xsdt_entries=(uint64_t *)(xsdt_mod+1);
950
951// Mozodojo: Insert additional SSDTs into XSDT
952if(ssdt_count>0)
953{
954int j;
955
956for (j=0; j<ssdt_count; j++)
957xsdt_entries[i-dropoffset+j]=(uint32_t)new_ssdt[j];
958
959verbose("Added %d SSDT table(s) into XSDT\n", ssdt_count);
960}
961
962// Correct the checksum of XSDT
963xsdt_mod->Checksum=0;
964xsdt_mod->Checksum=256-checksum8(xsdt_mod,xsdt_mod->Length);
965}
966else
967{
968drop_xsdt:
969
970DBG("About to drop XSDT\n");
971
972/*FIXME: Now we just hope that if MacOS doesn't find XSDT it reverts to RSDT.
973 * A Better strategy would be to generate
974 */
975
976rsdp_mod->XsdtAddress=0xffffffffffffffffLL;
977verbose("XSDT not found or XSDT incorrect\n");
978}
979}
980
981// Correct the checksum of RSDP
982
983DBG("RSDP: Original checksum %d, ", rsdp_mod->Checksum);
984
985rsdp_mod->Checksum=0;
986rsdp_mod->Checksum=256-checksum8(rsdp_mod,20);
987
988DBG("New checksum %d\n", rsdp_mod->Checksum);
989
990if (version)
991{
992DBG("RSDP: Original extended checksum %d", rsdp_mod->ExtendedChecksum);
993
994rsdp_mod->ExtendedChecksum=0;
995rsdp_mod->ExtendedChecksum=256-checksum8(rsdp_mod,rsdp_mod->Length);
996
997DBG("New extended checksum %d\n", rsdp_mod->ExtendedChecksum);
998
999}
1000
1001//verbose("Patched ACPI version %d DSDT\n", version+1);
1002if (version)
1003{
1004/* XXX aserebln why uint32 cast if pointer is uint64 ? */
1005acpi20_p = (uint32_t)rsdp_mod;
1006addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");
1007}
1008else
1009{
1010/* XXX aserebln why uint32 cast if pointer is uint64 ? */
1011acpi10_p = (uint32_t)rsdp_mod;
1012addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");
1013}
1014}
1015#if DEBUG_ACPI
1016printf("Press a key to continue... (DEBUG_ACPI)\n");
1017getc();
1018#endif
1019return 1;
1020}
1021

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