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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{␊
31␉int i;␊
32␉for (i=0; i<4; i++) {␊
33␉␉if ((table[i] &~0x20) != (sgn[i] &~0x20)) {␊
34␉␉␉return FALSE;␊
35␉␉}␊
36␉}␊
37␉return 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{␊
92␉int fd=0;␊
93␉const char * overriden_pathname=NULL;␊
94␉static char dirspec[512]="";␊
95␉static bool first_time =true; ␊
96␉int len=0;␊
97␉␊
98␉/// Take in accound user overriding if it's DSDT only␊
99␉if (strstr(filename, "DSDT") && ␊
100␉␉getValueForKey(kDSDT, &overriden_pathname, &len, ␊
101␉␉␉␉␉ &bootInfo->bootConfig))␊
102 {␊
103␉␉sprintf(dirspec, "%s", overriden_pathname);␊
104␉␉fd=open (dirspec,0);␊
105␉␉if (fd>=0) goto success_fd;␊
106 }␊
107␉// Check that dirspec is not already assigned with a path␊
108␉if (!first_time && *dirspec) ␊
109␉{ // it is so start searching this cached patch first␊
110␉␉//extract path␊
111␉␉for (len=strlen(dirspec)-1; len; len--)␊
112␉␉␉if (dirspec[len]=='/' || len==0)␊
113␉␉␉{␊
114␉␉␉␉dirspec[len]='\0';␊
115␉␉␉␉break;␊
116␉␉␉}␊
117␉␉// now concat with the filename␊
118␉␉strncat(dirspec, "/", sizeof(dirspec));␊
119␉␉strncat(dirspec, filename, sizeof(dirspec));␊
120␉␉// and test to see if we don't have our big boy here:␊
121␉␉fd=open (dirspec,0);␊
122␉␉if (fd>=0) ␊
123␉␉{␊
124␉␉␉// printf("ACPI file search cache hit: file found at %s\n", dirspec);␊
125␉␉␉goto success_fd;␊
126␉␉}␊
127␉}␊
128␉// Start searching any potential location for ACPI Table␊
129␉// search the Extra folders first␊
130␉sprintf(dirspec,"/Extra/%s",filename); ␊
131␉fd=open (dirspec,0);␊
132␉if (fd>=0) goto success_fd;␊
133␉␊
134␉sprintf(dirspec,"bt(0,0)/Extra/%s",filename);␊
135␉fd=open (dirspec,0);␊
136␉if (fd>=0) goto success_fd;␊
137␉␊
138␉sprintf(dirspec, "%s", filename); // search current dir␊
139␉fd=open (dirspec,0);␊
140␉if (fd>=0) goto success_fd;␊
141␉␊
142␉sprintf(dirspec, "/%s", filename); // search root␊
143␉fd=open (dirspec,0);␊
144␉if (fd>=0) goto success_fd;␊
145␉␊
146␉// NOT FOUND:␊
147␉//verbose("ACPI Table not found: %s\n", filename);␊
148␉if (outDirspec) *outDirspec = "";␊
149␉first_time = false;␊
150␉return -1;␊
151␉// FOUND␊
152success_fd:␊
153␉first_time = false;␊
154␉if (outDirspec) *outDirspec = dirspec; ␊
155␉return fd;␊
156}␊
157␊
158void *loadACPITable (const char * filename)␊
159{␊
160␉void *tableAddr;␊
161␉const char * dirspec=NULL;␊
162␉␊
163␉int fd = search_and_get_acpi_fd(filename, &dirspec);␊
164␉␊
165␉if (fd>=0)␊
166␉{␊
167␉␉tableAddr=(void*)AllocateKernelMemory(file_size (fd));␊
168␉␉if (tableAddr)␊
169␉␉{␊
170␉␉␉if (read (fd, tableAddr, file_size (fd))!=file_size (fd))␊
171␉␉␉{␊
172␉␉␉␉printf("Couldn't read table %s\n",dirspec);␊
173␉␉␉␉free (tableAddr);␊
174␉␉␉␉close (fd);␊
175␉␉␉␉return NULL;␊
176␉␉␉}␊
177␉␉␉␊
178␉␉␉DBG("Table %s read and stored at: %x\n", dirspec, tableAddr);␊
179␉␉␉close (fd);␊
180␉␉␉return tableAddr;␊
181␉␉}␊
182␉␉close (fd);␊
183␉␉printf("Couldn't allocate memory for table \n", dirspec);␊
184␉} ␊
185␉//printf("Couldn't find table %s\n", filename);␊
186␉return NULL;␊
187}␊
188␊
189uint8_t␉acpi_cpu_count = 0;␊
190char* acpi_cpu_name[32];␊
191␊
192void get_acpi_cpu_names(unsigned char* dsdt, int length)␊
193{␊
194␉int i;␊
195␉␊
196␉for (i=0; i<length-7; i++) ␊
197␉{␊
198␉␉if (dsdt[i] == 0x5B && dsdt[i+1] == 0x83) // ProcessorOP␊
199␉␉{␊
200␉␉␉uint8_t offset = i+2+(dsdt[i+2] >> 6) + 1, j;␊
201␉␉␉bool add_name = TRUE;␊
202␊
203␉␉␉for (j=0; j<4; j++) ␊
204␉␉␉{␊
205␉␉␉␉char c = dsdt[offset+j];␊
206␉␉␉␉␊
207␉␉␉␉if (!aml_isvalidchar(c)) ␊
208␉␉␉␉{␊
209␉␉␉␉␉add_name = FALSE;␊
210␉␉␉␉␉verbose("Invalid characters found in ProcessorOP!\n");␊
211␉␉␉␉␉break;␊
212␉␉␉␉}␊
213␉␉␉}␊
214␉␉␉␊
215␉␉␉if (add_name && dsdt[offset+4] < 32 ) ␊
216␉␉␉{␊
217␉␉␉␉acpi_cpu_name[acpi_cpu_count] = malloc(4);␊
218␉␉␉␉memcpy(acpi_cpu_name[acpi_cpu_count], dsdt+offset, 4);␊
219␉␉␉␉i = offset + 5;␊
220␉␉␉␉␊
221␉␉␉␉verbose("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␉␉␉␉␊
223␉␉␉␉if (++acpi_cpu_count == 32) return;␊
224␉␉␉}␊
225␉␉}␊
226␉}␊
227}␊
228␊
229struct acpi_2_ssdt *generate_cst_ssdt(struct acpi_2_fadt* fadt)␊
230{␊
231␉char ssdt_header[] =␊
232␉{␊
233␉␉0x53, 0x53, 0x44, 0x54, 0xE7, 0x00, 0x00, 0x00, /* SSDT.... */␊
234␉␉0x01, 0x17, 0x50, 0x6D, 0x52, 0x65, 0x66, 0x41, /* ..PmRefA */␊
235␉␉0x43, 0x70, 0x75, 0x43, 0x73, 0x74, 0x00, 0x00, /* CpuCst.. */␊
236␉␉0x00, 0x10, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* ....INTL */␊
237␉␉0x31, 0x03, 0x10, 0x20 ␉␉␉␉␉␉␉/* 1.._␉␉*/␊
238␉};␊
239␉␊
240␉char cstate_resource_template[] = ␊
241␉{␊
242␉␉0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, ␊
243␉␉0x01, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, ␊
244␉␉0x00, 0x00, 0x00, 0x79, 0x00␊
245␉};␊
246␊
247␉if (Platform.CPU.Vendor != 0x756E6547) {␊
248␉␉verbose ("Not an Intel platform: C-States will not be generated !!!\n");␊
249␉␉return NULL;␊
250␉}␊
251␉␊
252␉if (fadt == NULL) {␊
253␉␉verbose ("FACP not exists: C-States not generated !!!\n");␊
254␉␉return NULL;␊
255␉}␊
256␉␊
257␉struct acpi_2_dsdt* dsdt = (void*)fadt->DSDT;␊
258␉␊
259␉if (dsdt == NULL) {␊
260␉␉verbose ("DSDT not found: C-States not generated !!!\n");␊
261␉␉return NULL;␊
262␉}␊
263␉␊
264␉if (acpi_cpu_count == 0) ␊
265␉␉get_acpi_cpu_names((void*)dsdt, dsdt->Length);␊
266␉␊
267␉if (acpi_cpu_count > 0) ␊
268␉{␊
269␉␉bool c2_enabled = fadt->C2_Latency < 100;␊
270␉␉bool c3_enabled = fadt->C3_Latency < 1000;␊
271␉␉bool c4_enabled = false;␊
272␉␉␊
273␉␉getBoolForKey(kEnableC4States, &c4_enabled, &bootInfo->bootConfig);␊
274␊
275␉␉unsigned char cstates_count = 1 + (c2_enabled ? 1 : 0) + (c3_enabled ? 1 : 0);␊
276␉␉␊
277␉␉struct aml_chunk* root = aml_create_node(NULL);␊
278␉␉␉aml_add_buffer(root, ssdt_header, sizeof(ssdt_header)); // SSDT header␊
279␉␉␉struct aml_chunk* scop = aml_add_scope(root, "\\_PR_");␊
280␉␉␉␉struct aml_chunk* name = aml_add_name(scop, "CST_");␊
281␉␉␉␉␉struct aml_chunk* pack = aml_add_package(name);␊
282␉␉␉␉␉␉aml_add_byte(pack, cstates_count);␊
283␉␉␊
284␉␉␉␉␉␉struct aml_chunk* tmpl = aml_add_package(pack);␊
285␉␉␉␉␉␉␉cstate_resource_template[11] = 0x00; // C1␊
286␉␉␉␉␉␉␉cstate_resource_template[10] = 0x00; // C1␊
287␉␉␉␉␉␉␉aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));␊
288␉␉␉␉␉␉␉aml_add_byte(tmpl, 0x01); // C1␊
289␉␉␉␉␉␉␉aml_add_byte(tmpl, 0x01); // Latency␊
290␉␉␉␉␉␉␉aml_add_word(tmpl, 0x03e8); // Power␊
291␊
292␉␉␉␉␉␉// C2␊
293␉␉␉␉␉␉if (c2_enabled) ␊
294␉␉␉␉␉␉{␊
295␉␉␉␉␉␉␉tmpl = aml_add_package(pack);␊
296␉␉␉␉␉␉␉␉cstate_resource_template[11] = 0x10; // C2␊
297␉␉␉␉␉␉␉␉cstate_resource_template[10] = 0x01; // C2␊
298␉␉␉␉␉␉␉␉aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));␊
299␉␉␉␉␉␉␉␉aml_add_byte(tmpl, 0x02); // C2␊
300␉␉␉␉␉␉␉␉aml_add_byte(tmpl, fadt->C2_Latency);␊
301␉␉␉␉␉␉␉␉aml_add_word(tmpl, 0x01f4); // Power␊
302␉␉␉␉␉␉}␊
303␉␉␉␉␉␉// C4␊
304␉␉␉␉␉␉if (c4_enabled) ␊
305␉␉␉␉␉␉{␊
306␉␉␉␉␉␉␉tmpl = aml_add_package(pack);␊
307␉␉␉␉␉␉␉cstate_resource_template[11] = 0x30; // C4␊
308␉␉␉␉␉␉␉cstate_resource_template[10] = 0x03; // C4␊
309␉␉␉␉␉␉␉aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));␊
310␉␉␉␉␉␉␉aml_add_byte(tmpl, 0x04); // C4␊
311␉␉␉␉␉␉␉aml_add_word(tmpl, fadt->C3_Latency); // TODO: right latency for C4␊
312␉␉␉␉␉␉␉aml_add_byte(tmpl, 0xfa); // Power␊
313␉␉␉␉␉␉}␊
314␉␉␉␉␉␉else␊
315␉␉␉␉␉␉// C3␊
316␉␉␉␉␉␉if (c3_enabled) ␊
317␉␉␉␉␉␉{␊
318␉␉␉␉␉␉␉tmpl = aml_add_package(pack);␊
319␉␉␉␉␉␉␉cstate_resource_template[11] = 0x20; // C3␊
320␉␉␉␉␉␉␉cstate_resource_template[10] = 0x02; // C3␊
321␉␉␉␉␉␉␉aml_add_buffer(tmpl, cstate_resource_template, sizeof(cstate_resource_template));␊
322␉␉␉␉␉␉␉aml_add_byte(tmpl, 0x03); // C3␊
323␉␉␉␉␉␉␉aml_add_word(tmpl, fadt->C3_Latency);␊
324␉␉␉␉␉␉␉aml_add_word(tmpl, 0x015e); // Power␊
325␉␉␉␉␉␉}␊
326␉␉␉␉␉␉␊
327␉␉␉␊
328␉␉␉// Aliaces␊
329␉␉␉int i;␊
330␉␉␉for (i = 0; i < acpi_cpu_count; i++) ␊
331␉␉␉{␊
332␉␉␉␉char name[9];␊
333␉␉␉␉sprintf(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]);␊
334␉␉␉␉␊
335␉␉␉␉scop = aml_add_scope(root, name);␊
336␉␉␉␉␉aml_add_alias(scop, "CST_", "_CST");␊
337␉␉␉}␊
338␉␉␊
339␉␉␊
340␉␉aml_calculate_size(root);␊
341␉␉␊
342␉␉struct acpi_2_ssdt *ssdt = (struct acpi_2_ssdt *)AllocateKernelMemory(root->Size);␊
343␉␊
344␉␉aml_write_node(root, (void*)ssdt, 0);␊
345␉␉␊
346␉␉ssdt->Length = root->Size;␊
347␉␉ssdt->Checksum = 0;␊
348␉␉ssdt->Checksum = 256 - checksum8(ssdt, ssdt->Length);␊
349␉␉␊
350␉␉aml_destroy_node(root);␊
351␉␉␊
352␉␉//dumpPhysAddr("C-States SSDT content: ", ssdt, ssdt->Length);␊
353␉␉␉␉␊
354␉␉verbose ("SSDT with CPU C-States generated successfully\n");␊
355␉␉␊
356␉␉return ssdt;␊
357␉}␊
358␉else ␊
359␉{␊
360␉␉verbose ("DSDT CPUs not found: C-States not generated !!!\n");␊
361␉}␊
362␊
363␉return NULL;␊
364}␊
365␊
366struct acpi_2_ssdt *generate_pss_ssdt(struct acpi_2_dsdt* dsdt)␊
367{␉␊
368␉char ssdt_header[] =␊
369␉{␊
370␉␉0x53, 0x53, 0x44, 0x54, 0x7E, 0x00, 0x00, 0x00, /* SSDT.... */␊
371␉␉0x01, 0x6A, 0x50, 0x6D, 0x52, 0x65, 0x66, 0x00, /* ..PmRef. */␊
372␉␉0x43, 0x70, 0x75, 0x50, 0x6D, 0x00, 0x00, 0x00, /* CpuPm... */␊
373␉␉0x00, 0x30, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* .0..INTL */␊
374␉␉0x31, 0x03, 0x10, 0x20,␉␉␉␉␉␉␉/* 1.._␉␉*/␊
375␉};␊
376␉␊
377␉if (Platform.CPU.Vendor != 0x756E6547) {␊
378␉␉verbose ("Not an Intel platform: P-States will not be generated !!!\n");␊
379␉␉return NULL;␊
380␉}␊
381␉␊
382␉if (!(Platform.CPU.Features & CPU_FEATURE_MSR)) {␊
383␉␉verbose ("Unsupported CPU: P-States will not be generated !!!\n");␊
384␉␉return NULL;␊
385␉}␊
386␉␊
387␉if (acpi_cpu_count == 0) ␊
388␉␉get_acpi_cpu_names((void*)dsdt, dsdt->Length);␊
389␉␊
390␉if (acpi_cpu_count > 0) ␊
391␉{␉␊
392␉␉bool cpu_dynamic_fsb = false, cpu_noninteger_bus_ratio = (rdmsr64(MSR_IA32_PERF_STATUS) & (1ULL << 46));␊
393␉␉struct p_state initial, maximum, minimum, p_states[32];␊
394␉␉uint8_t p_states_count;␉␉␊
395␉␉␊
396␉␉// Retrieving P-States, ported from code by superhai (c)␊
397␉␉switch (Platform.CPU.Family) {␊
398␉␉␉case 0x06: ␊
399␉␉␉{␊
400␉␉␉␉switch (Platform.CPU.Model) ␊
401␉␉␉␉{␊
402␉␉␉␉␉case 0x0F: // Intel Core (65nm)␊
403␉␉␉␉␉case 0x17: // Intel Core (45nm)␊
404␉␉␉␉␉case 0x1C: // Intel Atom (45nm)␊
405␉␉␉␉␉case 0x1A: // Intel Core i7 LGA1366 (45nm)␊
406␉␉␉␉␉case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)␊
407␉␉␉␉␉case 0x1F:␊
408␉␉␉␉␉case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)␊
409␉␉␉␉␉case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core␊
410␉␉␉␉␉case 0x2F:␊
411␉␉␉␉␉␉if (rdmsr64(MSR_IA32_EXT_CONFIG) & (1 << 27)) ␊
412␉␉␉␉␉␉{␊
413␉␉␉␉␉␉␉wrmsr64(MSR_IA32_EXT_CONFIG, (rdmsr64(MSR_IA32_EXT_CONFIG) | (1 << 28))); ␊
414␉␉␉␉␉␉␉delay(1);␊
415␉␉␉␉␉␉␉cpu_dynamic_fsb = rdmsr64(MSR_IA32_EXT_CONFIG) & (1 << 28);␊
416␉␉␉␉␉␉}␊
417␉␉␉␉␉␉break;␊
418␉␉␉␉}␊
419␉␉␉}␊
420␉␉}␊
421␉␉␊
422␉␉initial.Control = rdmsr64(MSR_IA32_PERF_STATUS);␊
423␉␉␊
424␉␉maximum.Control = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 32) & 0x1F3F) | (0x4000 * cpu_noninteger_bus_ratio);␊
425␉␉maximum.CID = ((maximum.FID & 0x1F) << 1) | cpu_noninteger_bus_ratio;␊
426␉␉␊
427␉␉minimum.FID = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 24) & 0x1F) | (0x80 * cpu_dynamic_fsb);␊
428␉␉minimum.VID = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 48) & 0x3F);␊
429␉␉␊
430␉␉if (minimum.FID == 0) ␊
431␉␉{␊
432␉␉␉uint8_t i;␊
433␉␉␉// Probe for lowest fid␊
434␉␉␉for (i = maximum.FID; i >= 0x6; i--) ␊
435␉␉␉{␊
436␉␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (i << 8) | minimum.VID);␊
437␉␉␉␉intel_waitforsts();␊
438␉␉␉␉minimum.FID = (rdmsr64(MSR_IA32_PERF_STATUS) >> 8) & 0x1F; ␊
439␉␉␉␉delay(1);␊
440␉␉␉}␊
441␉␉␉␊
442␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (maximum.FID << 8) | maximum.VID);␊
443␉␉␉intel_waitforsts();␊
444␉␉}␊
445␉␉␊
446␉␉if (minimum.VID == maximum.VID) ␊
447␉␉{␉␊
448␉␉␉uint8_t i;␊
449␉␉␉// Probe for lowest vid␊
450␉␉␉for (i = maximum.VID; i > 0xA; i--) ␊
451␉␉␉{␊
452␉␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (minimum.FID << 8) | i);␊
453␉␉␉␉intel_waitforsts();␊
454␉␉␉␉minimum.VID = rdmsr64(MSR_IA32_PERF_STATUS) & 0x3F; ␊
455␉␉␉␉delay(1);␊
456␉␉␉}␊
457␉␉␉␊
458␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (maximum.FID << 8) | maximum.VID);␊
459␉␉␉intel_waitforsts();␊
460␉␉}␊
461␉␉␊
462␉␉minimum.CID = ((minimum.FID & 0x1F) << 1) >> cpu_dynamic_fsb;␊
463␉␉␊
464␉␉// Sanity check␊
465␉␉if (maximum.CID < minimum.CID) ␊
466␉␉{␊
467␉␉␉DBG("Insane FID values!");␊
468␉␉␉p_states_count = 1;␊
469␉␉}␊
470␉␉else␊
471␉␉{␊
472␉␉␉// Finalize P-States␊
473␉␉␉// Find how many P-States machine supports␊
474␉␉␉p_states_count = maximum.CID - minimum.CID + 1;␊
475␉␉␉␊
476␉␉␉if (p_states_count > 32) ␊
477␉␉␉␉p_states_count = 32;␊
478␉␉␉␊
479␉␉␉uint8_t vidstep;␊
480␉␉␉uint8_t i = 0, u, invalid = 0;␊
481␉␉␉␊
482␉␉␉vidstep = ((maximum.VID << 2) - (minimum.VID << 2)) / (p_states_count - 1);␊
483␉␉␉␊
484␉␉␉for (u = 0; u < p_states_count; u++) ␊
485␉␉␉{␊
486␉␉␉␉i = u - invalid;␊
487␉␉␉␉␊
488␉␉␉␉p_states[i].CID = maximum.CID - u;␊
489␉␉␉␉p_states[i].FID = (p_states[i].CID >> 1);␊
490␉␉␉␉␊
491␉␉␉␉if (p_states[i].FID < 0x6) ␊
492␉␉␉␉{␊
493␉␉␉␉␉if (cpu_dynamic_fsb) ␊
494␉␉␉␉␉␉p_states[i].FID = (p_states[i].FID << 1) | 0x80;␊
495␉␉␉␉} ␊
496␉␉␉␉else if (cpu_noninteger_bus_ratio) ␊
497␉␉␉␉{␊
498␉␉␉␉␉p_states[i].FID = p_states[i].FID | (0x40 * (p_states[i].CID & 0x1));␊
499␉␉␉␉}␊
500␉␉␉␉␊
501␉␉␉␉if (i && p_states[i].FID == p_states[i-1].FID)␊
502␉␉␉␉␉invalid++;␊
503␉␉␉␉␊
504␉␉␉␉p_states[i].VID = ((maximum.VID << 2) - (vidstep * u)) >> 2;␊
505␉␉␉␉␊
506␉␉␉␉uint32_t multiplier = p_states[i].FID & 0x1f;␉␉// = 0x08␊
507␉␉␉␉bool half = p_states[i].FID & 0x40;␉␉␉␉␉// = 0x01␊
508␉␉␉␉bool dfsb = p_states[i].FID & 0x80;␉␉␉␉␉// = 0x00␊
509␉␉␉␉uint32_t fsb = Platform.CPU.FSBFrequency / 1000000; // = 400␊
510␉␉␉␉uint32_t halffsb = (fsb + 1) >> 1;␉␉␉␉␉// = 200␊
511␉␉␉␉uint32_t frequency = (multiplier * fsb);␉␉␉// = 3200␊
512␉␉␉␉␊
513␉␉␉␉p_states[i].Frequency = (frequency + (half * halffsb)) >> dfsb;␉// = 3200 + 200 = 3400␊
514␉␉␉}␊
515␉␉␉␊
516␉␉␉p_states_count -= invalid;␊
517␉␉}␊
518␉␉␊
519␉␉// Generating SSDT␊
520␉␉␊
521␉␉if (p_states_count > 0) ␊
522␉␉{␉␊
523␉␉␉int i;␊
524␉␉␉␊
525␉␉␉struct aml_chunk* root = aml_create_node(NULL);␊
526␉␉␉␉aml_add_buffer(root, ssdt_header, sizeof(ssdt_header)); // SSDT header␊
527␉␉␉␉␉struct aml_chunk* scop = aml_add_scope(root, "\\_PR_");␊
528␉␉␉␉␉␉struct aml_chunk* name = aml_add_name(scop, "PSS_");␊
529␉␉␉␉␉␉␉struct aml_chunk* pack = aml_add_package(name);␊
530␉␉␉␊
531␉␉␉␉␉␉␉␉for (i = 0; i < p_states_count; i++) ␊
532␉␉␉␉␉␉␉␉{␊
533␉␉␉␉␉␉␉␉␉struct aml_chunk* pstt = aml_add_package(pack);␊
534␉␉␉␉␉␉␉␉␉␊
535␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, p_states[i].Frequency);␊
536␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, 0x00000000); // Power␊
537␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, 0x0000000A); // Latency␊
538␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, 0x0000000A); // Latency␊
539␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, p_states[i].Control);␊
540␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, i+1); // Status␊
541␉␉␉␉␉␉␉␉}␊
542␉␉␉␉␊
543␉␉␉// Add aliaces␊
544␉␉␉for (i = 0; i < acpi_cpu_count; i++) ␊
545␉␉␉{␊
546␉␉␉␉char name[9];␊
547␉␉␉␉sprintf(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]);␊
548␉␉␉␉␊
549␉␉␉␉scop = aml_add_scope(root, name);␊
550␉␉␉␉aml_add_alias(scop, "PSS_", "_PSS");␊
551␉␉␉}␊
552␉␉␉␊
553␉␉␉aml_calculate_size(root);␊
554␉␉␉␊
555␉␉␉struct acpi_2_ssdt *ssdt = (struct acpi_2_ssdt *)AllocateKernelMemory(root->Size);␊
556␉␉␉␊
557␉␉␉aml_write_node(root, (void*)ssdt, 0);␊
558␉␉␉␊
559␉␉␉ssdt->Length = root->Size;␊
560␉␉␉ssdt->Checksum = 0;␊
561␉␉␉ssdt->Checksum = 256 - checksum8(ssdt, ssdt->Length);␊
562␉␉␉␊
563␉␉␉aml_destroy_node(root);␊
564␉␉␉␊
565␉␉␉//dumpPhysAddr("P-States SSDT content: ", ssdt, ssdt->Length);␊
566␉␉␉␊
567␉␉␉verbose ("SSDT with CPU P-States generated successfully\n");␊
568␉␉␉␊
569␉␉␉return ssdt;␊
570␉␉}␊
571␉}␊
572␉else {␊
573␉␉verbose ("DSDT CPUs not found: P-States not generated !!!\n");␊
574␉}␊
575␉␊
576␉return NULL;␊
577}␊
578␊
579struct acpi_2_fadt *patch_fadt(struct acpi_2_fadt *fadt, struct acpi_2_dsdt *new_dsdt)␊
580{␊
581␉extern void setupSystemType(); ␊
582␉␊
583␉struct acpi_2_fadt *fadt_mod;␊
584␉bool fadt_rev2_needed = false;␊
585␉bool fix_restart;␊
586␉const char * value;␊
587␉␊
588␉// Restart Fix␊
589␉if (Platform.CPU.Vendor == 0x756E6547) {␉/* Intel */␊
590␉␉fix_restart = true;␊
591␉␉getBoolForKey(kRestartFix, &fix_restart, &bootInfo->bootConfig);␊
592␉} else {␊
593␉␉verbose ("Not an Intel platform: Restart Fix not applied !!!\n");␊
594␉␉fix_restart = false;␊
595␉}␊
596␉␊
597␉if (fix_restart) fadt_rev2_needed = true;␊
598␉␊
599␉// Allocate new fadt table␊
600␉if (fadt->Length < 0x84 && fadt_rev2_needed)␊
601␉{␊
602␉␉fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(0x84);␊
603␉␉memcpy(fadt_mod, fadt, fadt->Length);␊
604␉␉fadt_mod->Length = 0x84;␊
605␉␉fadt_mod->Revision = 0x02; // FADT rev 2 (ACPI 1.0B MS extensions)␊
606␉}␊
607␉else␊
608␉{␊
609␉␉fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(fadt->Length);␊
610␉␉memcpy(fadt_mod, fadt, fadt->Length);␊
611␉}␊
612␉// Determine system type / PM_Model␊
613␉if ( (value=getStringForKey(kSystemType, &bootInfo->bootConfig))!=NULL)␊
614␉{␊
615␉␉if (Platform.Type > 6) ␊
616␉␉{␊
617␉␉␉if(fadt_mod->PM_Profile<=6)␊
618␉␉␉␉Platform.Type = fadt_mod->PM_Profile; // get the fadt if correct␊
619␉␉␉else ␊
620␉␉␉␉Platform.Type = 1;␉␉/* Set a fixed value (Desktop) */␊
621␉␉␉verbose("Error: system-type must be 0..6. Defaulting to %d !\n", Platform.Type);␊
622␉␉}␊
623␉␉else␊
624␉␉␉Platform.Type = (unsigned char) strtoul(value, NULL, 10);␊
625␉}␊
626␉// Set PM_Profile from System-type if only user wanted this value to be forced␊
627␉if (fadt_mod->PM_Profile != Platform.Type) ␊
628␉{␊
629␉ if (value) ␊
630␉␉{ // user has overriden the SystemType so take care of it in FACP␊
631␉␉␉verbose("FADT: changing PM_Profile from 0x%02x to 0x%02x\n", fadt_mod->PM_Profile, Platform.Type);␊
632␉␉␉fadt_mod->PM_Profile = Platform.Type;␊
633␉ }␊
634␉ else␊
635␉ { // PM_Profile has a different value and no override has been set, so reflect the user value to ioregs␊
636␉␉␉Platform.Type = fadt_mod->PM_Profile <= 6 ? fadt_mod->PM_Profile : 1;␊
637␉ } ␊
638␉}␊
639␉// We now have to write the systemm-type in ioregs: we cannot do it before in setupDeviceTree()␊
640␉// because we need to take care of facp original content, if it is correct.␊
641␉setupSystemType();␊
642␉␊
643␉// Patch FADT to fix restart␊
644␉if (fix_restart)␊
645␉{␊
646␉␉fadt_mod->Flags|= 0x400;␊
647␉␉fadt_mod->Reset_SpaceID␉␉= 0x01; // System I/O␊
648␉␉fadt_mod->Reset_BitWidth␉= 0x08; // 1 byte␊
649␉␉fadt_mod->Reset_BitOffset␉= 0x00; // Offset 0␊
650␉␉fadt_mod->Reset_AccessWidth␉= 0x01; // Byte access␊
651␉␉fadt_mod->Reset_Address␉␉= 0x0cf9; // Address of the register␊
652␉␉fadt_mod->Reset_Value␉␉= 0x06; // Value to write to reset the system␊
653␉␉verbose("FADT: Restart Fix applied!\n");␊
654␉}␊
655␉␊
656␉// Patch DSDT Address if we have loaded DSDT.aml␊
657␉if(new_dsdt)␊
658␉{␊
659␉␉DBG("DSDT: Old @%x,%x, ",fadt_mod->DSDT,fadt_mod->X_DSDT);␊
660␉␉␊
661␉␉fadt_mod->DSDT=(uint32_t)new_dsdt;␊
662␉␉if ((uint32_t)(&(fadt_mod->X_DSDT))-(uint32_t)fadt_mod+8<=fadt_mod->Length)␊
663␉␉␉fadt_mod->X_DSDT=(uint32_t)new_dsdt;␊
664␉␉␊
665␉␉DBG("New @%x,%x\n",fadt_mod->DSDT,fadt_mod->X_DSDT);␊
666␉␉␊
667␉␉verbose("FADT: Using custom DSDT!\n");␊
668␉}␊
669␉␊
670␉// Correct the checksum␊
671␉fadt_mod->Checksum=0;␊
672␉fadt_mod->Checksum=256-checksum8(fadt_mod,fadt_mod->Length);␊
673␉␊
674␉return fadt_mod;␊
675}␊
676␊
677/* Setup ACPI without replacing DSDT. */␊
678int setupAcpiNoMod()␊
679{␊
680␉//␉addConfigurationTable(&gEfiAcpiTableGuid, getAddressOfAcpiTable(), "ACPI");␊
681␉//␉addConfigurationTable(&gEfiAcpi20TableGuid, getAddressOfAcpi20Table(), "ACPI_20");␊
682␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊
683␉acpi10_p = (uint32_t)getAddressOfAcpiTable();␊
684␉acpi20_p = (uint32_t)getAddressOfAcpi20Table();␊
685␉addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");␊
686␉if(acpi20_p) addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");␊
687␉return 1;␊
688}␊
689␊
690/* Setup ACPI. Replace DSDT if DSDT.aml is found */␊
691int setupAcpi(void)␊
692{␊
693␉int version;␊
694␉void *new_dsdt;␊
695␉␊
696␉// Load replacement DSDT␊
697␉new_dsdt=loadACPITable("DSDT.aml");␊
698␉// Mozodojo: going to patch FACP and load SSDT's even if DSDT.aml is not present␊
699␉/*if (!new_dsdt)␊
700␉ {␊
701␉ return setupAcpiNoMod();␊
702␉ }*/␊
703␉␊
704␉// Mozodojo: Load additional SSDTs␊
705␉struct acpi_2_ssdt *new_ssdt[32]; // 30 + 2 additional tables for pss & cst␊
706␉int ssdt_count=0;␊
707␉␊
708␉// TEST!␊
709␉/*if(new_ssdt[ssdt_count] = generate_test_ssdt())␊
710␉␉ssdt_count++;*/␊
711␉␊
712␉// SSDT Options␊
713␉bool drop_ssdt=false, generate_pstates=false, generate_cstates=false; ␊
714␉␊
715␉getBoolForKey(kDropSSDT, &drop_ssdt, &bootInfo->bootConfig);␊
716␉getBoolForKey(kGeneratePStates, &generate_pstates, &bootInfo->bootConfig);␊
717␉getBoolForKey(kGenerateCStates, &generate_cstates, &bootInfo->bootConfig);␊
718␉␊
719␉{␊
720␉␉int i;␊
721␉␉␊
722␉␉for (i=0; i<30; i++)␊
723␉␉{␊
724␉␉␉char filename[512];␊
725␊
726␉␉␉sprintf(filename, i>0?"SSDT-%d.aml":"SSDT.aml", i);␊
727␉␉␉␊
728␉␉␉if(new_ssdt[ssdt_count] = loadACPITable(filename)) ␊
729␉␉␉{␉␉␉␉␊
730␉␉␉␉ssdt_count++;␊
731␉␉␉}␊
732␉␉␉else ␊
733␉␉␉{␊
734␉␉␉␉break;␊
735␉␉␉}␊
736␉␉}␊
737␉}␊
738␉␉␊
739␉// Do the same procedure for both versions of ACPI␊
740␉for (version=0; version<2; version++) {␊
741␉␉struct acpi_2_rsdp *rsdp, *rsdp_mod;␊
742␉␉struct acpi_2_rsdt *rsdt, *rsdt_mod;␊
743␉␉int rsdplength;␊
744␉␉␊
745␉␉// Find original rsdp␊
746␉␉rsdp=(struct acpi_2_rsdp *)(version?getAddressOfAcpi20Table():getAddressOfAcpiTable());␊
747␉␉if (!rsdp)␊
748␉␉{␊
749␉␉␉DBG("No ACPI version %d found. Ignoring\n", version+1);␊
750␉␉␉if (version)␊
751␉␉␉␉addConfigurationTable(&gEfiAcpi20TableGuid, NULL, "ACPI_20");␊
752␉␉␉else␊
753␉␉␉␉addConfigurationTable(&gEfiAcpiTableGuid, NULL, "ACPI");␊
754␉␉␉continue;␊
755␉␉}␊
756␉␉rsdplength=version?rsdp->Length:20;␊
757␉␉␊
758␉␉DBG("RSDP version %d found @%x. Length=%d\n",version+1,rsdp,rsdplength);␊
759␉␉␊
760␉␉/* FIXME: no check that memory allocation succeeded ␊
761␉␉ * Copy and patch RSDP,RSDT, XSDT and FADT␊
762␉␉ * For more info see ACPI Specification pages 110 and following␊
763␉␉ */␊
764␉␉␊
765␉␉rsdp_mod=(struct acpi_2_rsdp *) AllocateKernelMemory(rsdplength);␊
766␉␉memcpy(rsdp_mod, rsdp, rsdplength); ␊
767␉␉rsdt=(struct acpi_2_rsdt *)(rsdp->RsdtAddress);␊
768␉␉␊
769␉␉DBG("RSDT @%x, Length %d\n",rsdt, rsdt->Length);␊
770␉␉␊
771␉␉if (rsdt && (uint32_t)rsdt !=0xffffffff && rsdt->Length<0x10000)␊
772␉␉{␊
773␉␉␉uint32_t *rsdt_entries;␊
774␉␉␉int rsdt_entries_num;␊
775␉␉␉int dropoffset=0, i;␊
776␉␉␉␊
777␉␉␉// mozo: using malloc cos I didn't found how to free already allocated kernel memory␊
778␉␉␉rsdt_mod=(struct acpi_2_rsdt *)malloc(rsdt->Length); ␊
779␉␉␉memcpy (rsdt_mod, rsdt, rsdt->Length);␊
780␉␉␉rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;␊
781␉␉␉rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;␊
782␉␉␉rsdt_entries=(uint32_t *)(rsdt_mod+1);␊
783␉␉␉for (i=0;i<rsdt_entries_num;i++)␊
784␉␉␉{␊
785␉␉␉␉char *table=(char *)(rsdt_entries[i]);␊
786␉␉␉␉if (!table)␊
787␉␉␉␉␉continue;␊
788␉␉␉␉␊
789␉␉␉␉DBG("TABLE %c%c%c%c,",table[0],table[1],table[2],table[3]);␊
790␉␉␉␉␊
791␉␉␉␉rsdt_entries[i-dropoffset]=rsdt_entries[i];␊
792␉␉␉␉␊
793␉␉␉␉if (drop_ssdt && tableSign(table, "SSDT"))␊
794␉␉␉␉{␊
795␉␉␉␉␉dropoffset++;␊
796␉␉␉␉␉continue;␊
797␉␉␉␉}␊
798␉␉␉␉if (tableSign(table, "DSDT"))␊
799␉␉␉␉{␊
800␉␉␉␉␉DBG("DSDT found\n");␊
801␉␉␉␉␉␊
802␉␉␉␉␉if(new_dsdt)␊
803␉␉␉␉␉␉rsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;␊
804␉␉␉␉␉␉␉␉␉␉␊
805␉␉␉␉␉continue;␊
806␉␉␉␉}␊
807␉␉␉␉if (tableSign(table, "FACP"))␊
808␉␉␉␉{␊
809␉␉␉␉␉struct acpi_2_fadt *fadt, *fadt_mod;␊
810␉␉␉␉␉fadt=(struct acpi_2_fadt *)rsdt_entries[i];␊
811␉␉␉␉␉␊
812␉␉␉␉␉DBG("FADT found @%x, Length %d\n",fadt, fadt->Length);␊
813␉␉␉␉␉␊
814␉␉␉␉␉if (!fadt || (uint32_t)fadt == 0xffffffff || fadt->Length>0x10000)␊
815␉␉␉␉␉{␊
816␉␉␉␉␉␉printf("FADT incorrect. Not modified\n");␊
817␉␉␉␉␉␉continue;␊
818␉␉␉␉␉}␊
819␉␉␉␉␉␊
820␉␉␉␉␉fadt_mod = patch_fadt(fadt, new_dsdt);␊
821␉␉␉␉␉rsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;␊
822␉␉␉␉␉␊
823␉␉␉␉␉// Generate _CST SSDT␊
824␉␉␉␉␉if (generate_cstates && (new_ssdt[ssdt_count] = generate_cst_ssdt(fadt_mod)))␊
825␉␉␉␉␉{␊
826␉␉␉␉␉␉generate_cstates = FALSE; // Generate SSDT only once!␊
827␉␉␉␉␉␉ssdt_count++;␊
828␉␉␉␉␉}␊
829␉␉␉␉␉␊
830␉␉␉␉␉// Generating _PSS SSDT␊
831␉␉␉␉␉if (generate_pstates && (new_ssdt[ssdt_count] = generate_pss_ssdt((void*)fadt_mod->DSDT)))␊
832␉␉␉␉␉{␊
833␉␉␉␉␉␉generate_pstates = FALSE; // Generate SSDT only once!␊
834␉␉␉␉␉␉ssdt_count++;␊
835␉␉␉␉␉}␊
836␉␉␉␉␉␊
837␉␉␉␉␉continue;␊
838␉␉␉␉}␊
839␉␉␉}␊
840␉␉␉DBG("\n");␊
841␉␉␉␊
842␉␉␉// Allocate rsdt in Kernel memory area␊
843␉␉␉rsdt_mod->Length += 4*ssdt_count - 4*dropoffset;␊
844␉␉␉struct acpi_2_rsdt *rsdt_copy = (struct acpi_2_rsdt *)AllocateKernelMemory(rsdt_mod->Length);␊
845␉␉␉memcpy (rsdt_copy, rsdt_mod, rsdt_mod->Length);␊
846␉␉␉free(rsdt_mod); rsdt_mod = rsdt_copy;␊
847␉␉␉rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;␊
848␉␉␉rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;␊
849␉␉␉rsdt_entries=(uint32_t *)(rsdt_mod+1);␊
850␉␉␉␊
851␉␉␉// Mozodojo: Insert additional SSDTs into RSDT␊
852␉␉␉if(ssdt_count>0)␊
853␉␉␉{␊
854␉␉␉␉int j;␊
855␉␉␉␉␊
856␉␉␉␉for (j=0; j<ssdt_count; j++)␊
857␉␉␉␉␉rsdt_entries[i-dropoffset+j]=(uint32_t)new_ssdt[j];␊
858␉␉␉␉␉␊
859␉␉␉␉verbose("RSDT: Added %d SSDT table(s)\n", ssdt_count);␊
860␉␉␉}␊
861␊
862␉␉␉// Correct the checksum of RSDT␊
863␉␉␉DBG("RSDT: Original checksum %d, ", rsdt_mod->Checksum);␊
864␉␉␉␊
865␉␉␉rsdt_mod->Checksum=0;␊
866␉␉␉rsdt_mod->Checksum=256-checksum8(rsdt_mod,rsdt_mod->Length);␊
867␉␉␉␊
868␉␉␉DBG("New checksum %d at %x\n", rsdt_mod->Checksum,rsdt_mod);␊
869␉␉}␊
870␉␉else␊
871␉␉{␊
872␉␉␉rsdp_mod->RsdtAddress=0;␊
873␉␉␉printf("RSDT not found or RSDT incorrect\n");␊
874␉␉}␊
875␉␉␊
876␉␉if (version)␊
877␉␉{␊
878␉␉␉struct acpi_2_xsdt *xsdt, *xsdt_mod;␊
879␉␉␉␊
880␉␉␉// FIXME: handle 64-bit address correctly␊
881␉␉␉␊
882␉␉␉xsdt=(struct acpi_2_xsdt*) ((uint32_t)rsdp->XsdtAddress);␊
883␉␉␉DBG("XSDT @%x;%x, Length=%d\n", (uint32_t)(rsdp->XsdtAddress>>32),(uint32_t)rsdp->XsdtAddress,␊
884␉␉␉␉xsdt->Length);␊
885␉␉␉if (xsdt && (uint64_t)rsdp->XsdtAddress<0xffffffff && xsdt->Length<0x10000)␊
886␉␉␉{␊
887␉␉␉␉uint64_t *xsdt_entries;␊
888␉␉␉␉int xsdt_entries_num, i;␊
889␉␉␉␉int dropoffset=0;␊
890␉␉␉␉␊
891␉␉␉␉// mozo: using malloc cos I didn't found how to free already allocated kernel memory␊
892␉␉␉␉xsdt_mod=(struct acpi_2_xsdt*)malloc(xsdt->Length); ␊
893␉␉␉␉memcpy(xsdt_mod, xsdt, xsdt->Length);␊
894␉␉␉␉rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;␊
895␉␉␉␉xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;␊
896␉␉␉␉xsdt_entries=(uint64_t *)(xsdt_mod+1);␊
897␉␉␉␉for (i=0;i<xsdt_entries_num;i++)␊
898␉␉␉␉{␊
899␉␉␉␉␉char *table=(char *)((uint32_t)(xsdt_entries[i]));␊
900␉␉␉␉␉if (!table)␊
901␉␉␉␉␉␉continue;␊
902␉␉␉␉␉␊
903␉␉␉␉␉xsdt_entries[i-dropoffset]=xsdt_entries[i];␊
904␉␉␉␉␉␊
905␉␉␉␉␉if (drop_ssdt && tableSign(table, "SSDT"))␊
906␉␉␉␉␉{␊
907␉␉␉␉␉␉dropoffset++;␊
908␉␉␉␉␉␉continue;␊
909␉␉␉␉␉}␉␉␉␉␉␊
910␉␉␉␉␉if (tableSign(table, "DSDT"))␊
911␉␉␉␉␉{␊
912␉␉␉␉␉␉DBG("DSDT found\n");␊
913␉␉␉␉␉␉␊
914␉␉␉␉␉␉if (new_dsdt) ␊
915␉␉␉␉␉␉␉xsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;␊
916␉␉␉␉␉␉␊
917␉␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊
918␉␉␉␉␉␉␊
919␉␉␉␉␉␉continue;␊
920␉␉␉␉␉}␊
921␉␉␉␉␉if (tableSign(table, "FACP"))␊
922␉␉␉␉␉{␊
923␉␉␉␉␉␉struct acpi_2_fadt *fadt, *fadt_mod;␊
924␉␉␉␉␉␉fadt=(struct acpi_2_fadt *)(uint32_t)xsdt_entries[i];␊
925␉␉␉␉␉␉␊
926␉␉␉␉␉␉DBG("FADT found @%x,%x, Length %d\n",(uint32_t)(xsdt_entries[i]>>32),fadt, ␊
927␉␉␉␉␉␉␉fadt->Length);␊
928␉␉␉␉␉␉␊
929␉␉␉␉␉␉if (!fadt || (uint64_t)xsdt_entries[i] >= 0xffffffff || fadt->Length>0x10000)␊
930␉␉␉␉␉␉{␊
931␉␉␉␉␉␉␉verbose("FADT incorrect or after 4GB. Dropping XSDT\n");␊
932␉␉␉␉␉␉␉goto drop_xsdt;␊
933␉␉␉␉␉␉}␊
934␉␉␉␉␉␉␊
935␉␉␉␉␉␉fadt_mod = patch_fadt(fadt, new_dsdt);␊
936␉␉␉␉␉␉xsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;␊
937␉␉␉␉␉␉␊
938␉␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊
939␉␉␉␉␉␉␊
940␉␉␉␉␉␉// Generate _CST SSDT␊
941␉␉␉␉␉␉if (generate_cstates && (new_ssdt[ssdt_count] = generate_cst_ssdt(fadt_mod))) ␊
942␉␉␉␉␉␉{␊
943␉␉␉␉␉␉␉generate_cstates = FALSE; // Generate SSDT only once!␊
944␉␉␉␉␉␉␉ssdt_count++;␊
945␉␉␉␉␉␉}␊
946␉␉␉␉␉␉␊
947␉␉␉␉␉␉// Generating _PSS SSDT␊
948␉␉␉␉␉␉if (generate_pstates && (new_ssdt[ssdt_count] = generate_pss_ssdt((void*)fadt_mod->DSDT)))␊
949␉␉␉␉␉␉{␊
950␉␉␉␉␉␉␉generate_pstates = FALSE; // Generate SSDT only once!␊
951␉␉␉␉␉␉␉ssdt_count++;␊
952␉␉␉␉␉␉}␊
953␉␉␉␉␉␉␊
954␉␉␉␉␉␉continue;␊
955␉␉␉␉␉}␊
956␉␉␉␉␉␊
957␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊
958␉␉␉␉␉␊
959␉␉␉␉}␊
960␉␉␉␉␊
961␉␉␉␉// Allocate xsdt in Kernel memory area␊
962␉␉␉␉xsdt_mod->Length += 8*ssdt_count - 8*dropoffset;␊
963␉␉␉␉struct acpi_2_xsdt *xsdt_copy = (struct acpi_2_xsdt *)AllocateKernelMemory(xsdt_mod->Length);␊
964␉␉␉␉memcpy(xsdt_copy, xsdt_mod, xsdt_mod->Length);␊
965␉␉␉␉free(xsdt_mod); xsdt_mod = xsdt_copy;␊
966␉␉␉␉rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;␊
967␉␉␉␉xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;␊
968␉␉␉␉xsdt_entries=(uint64_t *)(xsdt_mod+1);␊
969␉␉␉␉␊
970␉␉␉␉// Mozodojo: Insert additional SSDTs into XSDT␊
971␉␉␉␉if(ssdt_count>0)␊
972␉␉␉␉{␊
973␉␉␉␉␉int j;␊
974␉␉␉␉␉␊
975␉␉␉␉␉for (j=0; j<ssdt_count; j++)␊
976␉␉␉␉␉␉xsdt_entries[i-dropoffset+j]=(uint32_t)new_ssdt[j];␊
977␉␉␉␉␉␉␊
978␉␉␉␉␉verbose("Added %d SSDT table(s) into XSDT\n", ssdt_count);␊
979␉␉␉␉}␊
980␊
981␉␉␉␉// Correct the checksum of XSDT␊
982␉␉␉␉xsdt_mod->Checksum=0;␊
983␉␉␉␉xsdt_mod->Checksum=256-checksum8(xsdt_mod,xsdt_mod->Length);␊
984␉␉␉}␊
985␉␉␉else␊
986␉␉␉{␊
987␉␉␉drop_xsdt:␊
988␉␉␉␉␊
989␉␉␉␉DBG("About to drop XSDT\n");␊
990␉␉␉␉␊
991␉␉␉␉/*FIXME: Now we just hope that if MacOS doesn't find XSDT it reverts to RSDT. ␊
992␉␉␉␉ * A Better strategy would be to generate␊
993␉␉␉␉ */␊
994␉␉␉␉␊
995␉␉␉␉rsdp_mod->XsdtAddress=0xffffffffffffffffLL;␊
996␉␉␉␉verbose("XSDT not found or XSDT incorrect\n");␊
997␉␉␉}␊
998␉␉}␊
999␉␉␊
1000␉␉// Correct the checksum of RSDP ␊
1001␉␉␊
1002␉␉DBG("RSDP: Original checksum %d, ", rsdp_mod->Checksum);␊
1003␉␉␊
1004␉␉rsdp_mod->Checksum=0;␊
1005␉␉rsdp_mod->Checksum=256-checksum8(rsdp_mod,20);␊
1006␉␉␊
1007␉␉DBG("New checksum %d\n", rsdp_mod->Checksum);␊
1008␉␉␊
1009␉␉if (version)␊
1010␉␉{␊
1011␉␉␉DBG("RSDP: Original extended checksum %d", rsdp_mod->ExtendedChecksum);␊
1012␉␉␉␊
1013␉␉␉rsdp_mod->ExtendedChecksum=0;␊
1014␉␉␉rsdp_mod->ExtendedChecksum=256-checksum8(rsdp_mod,rsdp_mod->Length);␊
1015␉␉␉␊
1016␉␉␉DBG("New extended checksum %d\n", rsdp_mod->ExtendedChecksum);␊
1017␉␉␉␊
1018␉␉}␊
1019␉␉␊
1020␉␉//verbose("Patched ACPI version %d DSDT\n", version+1);␊
1021␉␉if (version)␊
1022␉␉{␊
1023␉␉␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊
1024␉␉␉acpi20_p = (uint32_t)rsdp_mod;␊
1025␉␉␉addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");␊
1026␉␉}␊
1027␉␉else␊
1028␉␉{␊
1029␉␉␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊
1030␉␉␉acpi10_p = (uint32_t)rsdp_mod;␊
1031␉␉␉addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");␊
1032␉␉}␊
1033␉}␊
1034#if DEBUG_ACPI␊
1035␉printf("Press a key to continue... (DEBUG_ACPI)\n");␊
1036␉getc();␊
1037#endif␊
1038␉return 1;␊
1039}␊
1040

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