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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+3+(dsdt[i+2] >> 6), 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 0x%x!\n", c);␊
211␉␉␉␉␉break;␊
212␉␉␉␉}␊
213␉␉␉}␊
214␉␉␉␊
215␉␉␉if (add_name) ␊
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 will not be 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 will not be 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␉␉aml_calculate_size(root);␊
340␉␉␊
341␉␉struct acpi_2_ssdt *ssdt = (struct acpi_2_ssdt *)AllocateKernelMemory(root->Size);␊
342␉␊
343␉␉aml_write_node(root, (void*)ssdt, 0);␊
344␉␉␊
345␉␉ssdt->Length = root->Size;␊
346␉␉ssdt->Checksum = 0;␊
347␉␉ssdt->Checksum = 256 - checksum8(ssdt, ssdt->Length);␊
348␉␉␊
349␉␉aml_destroy_node(root);␊
350␉␉␊
351␉␉//dumpPhysAddr("C-States SSDT content: ", ssdt, ssdt->Length);␊
352␉␉␉␉␊
353␉␉verbose ("SSDT with CPU C-States generated successfully\n");␊
354␉␉␊
355␉␉return ssdt;␊
356␉}␊
357␉else ␊
358␉{␊
359␉␉verbose ("DSDT CPUs not found: C-States not generated !!!\n");␊
360␉}␊
361␊
362␉return NULL;␊
363}␊
364␊
365struct acpi_2_ssdt *generate_pss_ssdt(struct acpi_2_dsdt* dsdt)␊
366{␉␊
367␉char ssdt_header[] =␊
368␉{␊
369␉␉0x53, 0x53, 0x44, 0x54, 0x7E, 0x00, 0x00, 0x00, /* SSDT.... */␊
370␉␉0x01, 0x6A, 0x50, 0x6D, 0x52, 0x65, 0x66, 0x00, /* ..PmRef. */␊
371␉␉0x43, 0x70, 0x75, 0x50, 0x6D, 0x00, 0x00, 0x00, /* CpuPm... */␊
372␉␉0x00, 0x30, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C, /* .0..INTL */␊
373␉␉0x31, 0x03, 0x10, 0x20,␉␉␉␉␉␉␉/* 1.._␉␉*/␊
374␉};␊
375␉␊
376␉if (Platform.CPU.Vendor != 0x756E6547) {␊
377␉␉verbose ("Not an Intel platform: P-States will not be generated !!!\n");␊
378␉␉return NULL;␊
379␉}␊
380␉␊
381␉if (!(Platform.CPU.Features & CPU_FEATURE_MSR)) {␊
382␉␉verbose ("Unsupported CPU: P-States will not be generated !!!\n");␊
383␉␉return NULL;␊
384␉}␊
385␉␊
386␉if (acpi_cpu_count == 0) ␊
387␉␉get_acpi_cpu_names((void*)dsdt, dsdt->Length);␊
388␉␊
389␉if (acpi_cpu_count > 0) ␊
390␉{␉␊
391␉␉bool cpu_dynamic_fsb = false, cpu_noninteger_bus_ratio = (rdmsr64(MSR_IA32_PERF_STATUS) & (1ULL << 46));␊
392␉␉struct p_state initial, maximum, minimum, p_states[32];␊
393␉␉uint8_t p_states_count;␉␉␊
394␉␉␊
395␉␉// Retrieving P-States, ported from code by superhai (c)␊
396␉␉switch (Platform.CPU.Family) {␊
397␉␉␉case 0x06: ␊
398␉␉␉{␊
399␉␉␉␉switch (Platform.CPU.Model) ␊
400␉␉␉␉{␊
401␉␉␉␉␉case 0x0F: // Intel Core (65nm)␊
402␉␉␉␉␉case 0x17: // Intel Core (45nm)␊
403␉␉␉␉␉case 0x1C: // Intel Atom (45nm)␊
404␉␉␉␉␉case 0x1A: // Intel Core i7 LGA1366 (45nm)␊
405␉␉␉␉␉case 0x1E: // Intel Core i5, i7 LGA1156 (45nm)␊
406␉␉␉␉␉case 0x1F:␊
407␉␉␉␉␉case 0x25: // Intel Core i3, i5, i7 LGA1156 (32nm)␊
408␉␉␉␉␉case 0x2C: // Intel Core i7 LGA1366 (32nm) 6 Core␊
409␉␉␉␉␉case 0x2F:␊
410␉␉␉␉␉␉if (rdmsr64(MSR_IA32_EXT_CONFIG) & (1 << 27)) ␊
411␉␉␉␉␉␉{␊
412␉␉␉␉␉␉␉wrmsr64(MSR_IA32_EXT_CONFIG, (rdmsr64(MSR_IA32_EXT_CONFIG) | (1 << 28))); ␊
413␉␉␉␉␉␉␉delay(1);␊
414␉␉␉␉␉␉␉cpu_dynamic_fsb = rdmsr64(MSR_IA32_EXT_CONFIG) & (1 << 28);␊
415␉␉␉␉␉␉}␊
416␉␉␉␉␉␉break;␊
417␉␉␉␉}␊
418␉␉␉}␊
419␉␉}␊
420␉␉␊
421␉␉initial.Control = rdmsr64(MSR_IA32_PERF_STATUS);␊
422␉␉␊
423␉␉maximum.Control = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 32) & 0x1F3F) | (0x4000 * cpu_noninteger_bus_ratio);␊
424␉␉maximum.CID = ((maximum.FID & 0x1F) << 1) | cpu_noninteger_bus_ratio;␊
425␉␉␊
426␉␉minimum.FID = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 24) & 0x1F) | (0x80 * cpu_dynamic_fsb);␊
427␉␉minimum.VID = ((rdmsr64(MSR_IA32_PERF_STATUS) >> 48) & 0x3F);␊
428␉␉␊
429␉␉if (minimum.FID == 0) ␊
430␉␉{␊
431␉␉␉uint8_t i;␊
432␉␉␉// Probe for lowest fid␊
433␉␉␉for (i = maximum.FID; i >= 0x6; i--) ␊
434␉␉␉{␊
435␉␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (i << 8) | minimum.VID);␊
436␉␉␉␉intel_waitforsts();␊
437␉␉␉␉minimum.FID = (rdmsr64(MSR_IA32_PERF_STATUS) >> 8) & 0x1F; ␊
438␉␉␉␉delay(1);␊
439␉␉␉}␊
440␉␉␉␊
441␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (maximum.FID << 8) | maximum.VID);␊
442␉␉␉intel_waitforsts();␊
443␉␉}␊
444␉␉␊
445␉␉if (minimum.VID == maximum.VID) ␊
446␉␉{␉␊
447␉␉␉uint8_t i;␊
448␉␉␉// Probe for lowest vid␊
449␉␉␉for (i = maximum.VID; i > 0xA; i--) ␊
450␉␉␉{␊
451␉␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (minimum.FID << 8) | i);␊
452␉␉␉␉intel_waitforsts();␊
453␉␉␉␉minimum.VID = rdmsr64(MSR_IA32_PERF_STATUS) & 0x3F; ␊
454␉␉␉␉delay(1);␊
455␉␉␉}␊
456␉␉␉␊
457␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, (rdmsr64(MSR_IA32_PERF_CONTROL) & 0xFFFFFFFFFFFF0000ULL) | (maximum.FID << 8) | maximum.VID);␊
458␉␉␉intel_waitforsts();␊
459␉␉}␊
460␉␉␊
461␉␉minimum.CID = ((minimum.FID & 0x1F) << 1) >> cpu_dynamic_fsb;␊
462␉␉␊
463␉␉// Sanity check␊
464␉␉if (maximum.CID < minimum.CID) ␊
465␉␉{␊
466␉␉␉DBG("Insane FID values!");␊
467␉␉␉p_states_count = 1;␊
468␉␉}␊
469␉␉else␊
470␉␉{␊
471␉␉␉// Finalize P-States␊
472␉␉␉// Find how many P-States machine supports␊
473␉␉␉p_states_count = maximum.CID - minimum.CID + 1;␊
474␉␉␉␊
475␉␉␉if (p_states_count > 32) ␊
476␉␉␉␉p_states_count = 32;␊
477␉␉␉␊
478␉␉␉uint8_t vidstep;␊
479␉␉␉uint8_t i = 0, u, invalid = 0;␊
480␉␉␉␊
481␉␉␉vidstep = ((maximum.VID << 2) - (minimum.VID << 2)) / (p_states_count - 1);␊
482␉␉␉␊
483␉␉␉for (u = 0; u < p_states_count; u++) ␊
484␉␉␉{␊
485␉␉␉␉i = u - invalid;␊
486␉␉␉␉␊
487␉␉␉␉p_states[i].CID = maximum.CID - u;␊
488␉␉␉␉p_states[i].FID = (p_states[i].CID >> 1);␊
489␉␉␉␉␊
490␉␉␉␉if (p_states[i].FID < 0x6) ␊
491␉␉␉␉{␊
492␉␉␉␉␉if (cpu_dynamic_fsb) ␊
493␉␉␉␉␉␉p_states[i].FID = (p_states[i].FID << 1) | 0x80;␊
494␉␉␉␉} ␊
495␉␉␉␉else if (cpu_noninteger_bus_ratio) ␊
496␉␉␉␉{␊
497␉␉␉␉␉p_states[i].FID = p_states[i].FID | (0x40 * (p_states[i].CID & 0x1));␊
498␉␉␉␉}␊
499␉␉␉␉␊
500␉␉␉␉if (i && p_states[i].FID == p_states[i-1].FID)␊
501␉␉␉␉␉invalid++;␊
502␉␉␉␉␊
503␉␉␉␉p_states[i].VID = ((maximum.VID << 2) - (vidstep * u)) >> 2;␊
504␉␉␉␉␊
505␉␉␉␉uint32_t multiplier = p_states[i].FID & 0x1f;␉␉// = 0x08␊
506␉␉␉␉bool half = p_states[i].FID & 0x40;␉␉␉␉␉// = 0x01␊
507␉␉␉␉bool dfsb = p_states[i].FID & 0x80;␉␉␉␉␉// = 0x00␊
508␉␉␉␉uint32_t fsb = Platform.CPU.FSBFrequency / 1000000; // = 400␊
509␉␉␉␉uint32_t halffsb = (fsb + 1) >> 1;␉␉␉␉␉// = 200␊
510␉␉␉␉uint32_t frequency = (multiplier * fsb);␉␉␉// = 3200␊
511␉␉␉␉␊
512␉␉␉␉p_states[i].Frequency = (frequency + (half * halffsb)) >> dfsb;␉// = 3200 + 200 = 3400␊
513␉␉␉}␊
514␉␉␉␊
515␉␉␉p_states_count -= invalid;␊
516␉␉}␊
517␉␉␊
518␉␉// Generating SSDT␊
519␉␉␊
520␉␉if (p_states_count > 0) ␊
521␉␉{␉␊
522␉␉␉int i;␊
523␉␉␉␊
524␉␉␉struct aml_chunk* root = aml_create_node(NULL);␊
525␉␉␉␉aml_add_buffer(root, ssdt_header, sizeof(ssdt_header)); // SSDT header␊
526␉␉␉␉␉struct aml_chunk* scop = aml_add_scope(root, "\\_PR_");␊
527␉␉␉␉␉␉struct aml_chunk* name = aml_add_name(scop, "PSS_");␊
528␉␉␉␉␉␉␉struct aml_chunk* pack = aml_add_package(name);␊
529␉␉␉␊
530␉␉␉␉␉␉␉␉for (i = 0; i < p_states_count; i++) ␊
531␉␉␉␉␉␉␉␉{␊
532␉␉␉␉␉␉␉␉␉struct aml_chunk* pstt = aml_add_package(pack);␊
533␉␉␉␉␉␉␉␉␉␊
534␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, p_states[i].Frequency);␊
535␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, 0x00000000); // Power␊
536␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, 0x0000000A); // Latency␊
537␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, 0x0000000A); // Latency␊
538␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, p_states[i].Control);␊
539␉␉␉␉␉␉␉␉␉aml_add_dword(pstt, i+1); // Status␊
540␉␉␉␉␉␉␉␉}␊
541␉␉␉␉␊
542␉␉␉// Add aliaces␊
543␉␉␉for (i = 0; i < acpi_cpu_count; i++) ␊
544␉␉␉{␊
545␉␉␉␉char name[9];␊
546␉␉␉␉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]);␊
547␉␉␉␉␊
548␉␉␉␉scop = aml_add_scope(root, name);␊
549␉␉␉␉aml_add_alias(scop, "PSS_", "_PSS");␊
550␉␉␉}␊
551␉␉␉␊
552␉␉␉aml_calculate_size(root);␊
553␉␉␉␊
554␉␉␉struct acpi_2_ssdt *ssdt = (struct acpi_2_ssdt *)AllocateKernelMemory(root->Size);␊
555␉␉␉␊
556␉␉␉aml_write_node(root, (void*)ssdt, 0);␊
557␉␉␉␊
558␉␉␉ssdt->Length = root->Size;␊
559␉␉␉ssdt->Checksum = 0;␊
560␉␉␉ssdt->Checksum = 256 - checksum8(ssdt, ssdt->Length);␊
561␉␉␉␊
562␉␉␉aml_destroy_node(root);␊
563␉␉␉␊
564␉␉␉//dumpPhysAddr("P-States SSDT content: ", ssdt, ssdt->Length);␊
565␉␉␉␊
566␉␉␉verbose ("SSDT with CPU P-States generated successfully\n");␊
567␉␉␉␊
568␉␉␉return ssdt;␊
569␉␉}␊
570␉}␊
571␉else {␊
572␉␉verbose ("DSDT CPUs not found: P-States not generated !!!\n");␊
573␉}␊
574␉␊
575␉return NULL;␊
576}␊
577␊
578struct acpi_2_fadt *patch_fadt(struct acpi_2_fadt *fadt, struct acpi_2_dsdt *new_dsdt)␊
579{␊
580␉extern void setupSystemType(); ␊
581␉␊
582␉struct acpi_2_fadt *fadt_mod;␊
583␉bool fadt_rev2_needed = false;␊
584␉bool fix_restart;␊
585␉const char * value;␊
586␉␊
587␉// Restart Fix␊
588␉if (Platform.CPU.Vendor == 0x756E6547) {␉/* Intel */␊
589␉␉fix_restart = true;␊
590␉␉getBoolForKey(kRestartFix, &fix_restart, &bootInfo->bootConfig);␊
591␉} else {␊
592␉␉verbose ("Not an Intel platform: Restart Fix not applied !!!\n");␊
593␉␉fix_restart = false;␊
594␉}␊
595␉␊
596␉if (fix_restart) fadt_rev2_needed = true;␊
597␉␊
598␉// Allocate new fadt table␊
599␉if (fadt->Length < 0x84 && fadt_rev2_needed)␊
600␉{␊
601␉␉fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(0x84);␊
602␉␉memcpy(fadt_mod, fadt, fadt->Length);␊
603␉␉fadt_mod->Length = 0x84;␊
604␉␉fadt_mod->Revision = 0x02; // FADT rev 2 (ACPI 1.0B MS extensions)␊
605␉}␊
606␉else␊
607␉{␊
608␉␉fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(fadt->Length);␊
609␉␉memcpy(fadt_mod, fadt, fadt->Length);␊
610␉}␊
611␉// Determine system type / PM_Model␊
612␉if ( (value=getStringForKey(kSystemType, &bootInfo->bootConfig))!=NULL)␊
613␉{␊
614␉␉if (Platform.Type > 6) ␊
615␉␉{␊
616␉␉␉if(fadt_mod->PM_Profile<=6)␊
617␉␉␉␉Platform.Type = fadt_mod->PM_Profile; // get the fadt if correct␊
618␉␉␉else ␊
619␉␉␉␉Platform.Type = 1;␉␉/* Set a fixed value (Desktop) */␊
620␉␉␉verbose("Error: system-type must be 0..6. Defaulting to %d !\n", Platform.Type);␊
621␉␉}␊
622␉␉else␊
623␉␉␉Platform.Type = (unsigned char) strtoul(value, NULL, 10);␊
624␉}␊
625␉// Set PM_Profile from System-type if only user wanted this value to be forced␊
626␉if (fadt_mod->PM_Profile != Platform.Type) ␊
627␉{␊
628␉ if (value) ␊
629␉␉{ // user has overriden the SystemType so take care of it in FACP␊
630␉␉␉verbose("FADT: changing PM_Profile from 0x%02x to 0x%02x\n", fadt_mod->PM_Profile, Platform.Type);␊
631␉␉␉fadt_mod->PM_Profile = Platform.Type;␊
632␉ }␊
633␉ else␊
634␉ { // PM_Profile has a different value and no override has been set, so reflect the user value to ioregs␊
635␉␉␉Platform.Type = fadt_mod->PM_Profile <= 6 ? fadt_mod->PM_Profile : 1;␊
636␉ } ␊
637␉}␊
638␉// We now have to write the systemm-type in ioregs: we cannot do it before in setupDeviceTree()␊
639␉// because we need to take care of facp original content, if it is correct.␊
640␉setupSystemType();␊
641␉␊
642␉// Patch FADT to fix restart␊
643␉if (fix_restart)␊
644␉{␊
645␉␉fadt_mod->Flags|= 0x400;␊
646␉␉fadt_mod->Reset_SpaceID␉␉= 0x01; // System I/O␊
647␉␉fadt_mod->Reset_BitWidth␉= 0x08; // 1 byte␊
648␉␉fadt_mod->Reset_BitOffset␉= 0x00; // Offset 0␊
649␉␉fadt_mod->Reset_AccessWidth␉= 0x01; // Byte access␊
650␉␉fadt_mod->Reset_Address␉␉= 0x0cf9; // Address of the register␊
651␉␉fadt_mod->Reset_Value␉␉= 0x06; // Value to write to reset the system␊
652␉␉verbose("FADT: Restart Fix applied!\n");␊
653␉}␊
654␉␊
655␉// Patch DSDT Address if we have loaded DSDT.aml␊
656␉if(new_dsdt)␊
657␉{␊
658␉␉DBG("DSDT: Old @%x,%x, ",fadt_mod->DSDT,fadt_mod->X_DSDT);␊
659␉␉␊
660␉␉fadt_mod->DSDT=(uint32_t)new_dsdt;␊
661␉␉if ((uint32_t)(&(fadt_mod->X_DSDT))-(uint32_t)fadt_mod+8<=fadt_mod->Length)␊
662␉␉␉fadt_mod->X_DSDT=(uint32_t)new_dsdt;␊
663␉␉␊
664␉␉DBG("New @%x,%x\n",fadt_mod->DSDT,fadt_mod->X_DSDT);␊
665␉␉␊
666␉␉verbose("FADT: Using custom DSDT!\n");␊
667␉}␊
668␉␊
669␉// Correct the checksum␊
670␉fadt_mod->Checksum=0;␊
671␉fadt_mod->Checksum=256-checksum8(fadt_mod,fadt_mod->Length);␊
672␉␊
673␉return fadt_mod;␊
674}␊
675␊
676/* Setup ACPI without replacing DSDT. */␊
677int setupAcpiNoMod()␊
678{␊
679␉//␉addConfigurationTable(&gEfiAcpiTableGuid, getAddressOfAcpiTable(), "ACPI");␊
680␉//␉addConfigurationTable(&gEfiAcpi20TableGuid, getAddressOfAcpi20Table(), "ACPI_20");␊
681␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊
682␉acpi10_p = (uint32_t)getAddressOfAcpiTable();␊
683␉acpi20_p = (uint32_t)getAddressOfAcpi20Table();␊
684␉addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");␊
685␉if(acpi20_p) addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");␊
686␉return 1;␊
687}␊
688␊
689/* Setup ACPI. Replace DSDT if DSDT.aml is found */␊
690int setupAcpi(void)␊
691{␊
692␉int version;␊
693␉void *new_dsdt;␊
694␉␊
695␉// Load replacement DSDT␊
696␉new_dsdt=loadACPITable("DSDT.aml");␊
697␉// Mozodojo: going to patch FACP and load SSDT's even if DSDT.aml is not present␊
698␉/*if (!new_dsdt)␊
699␉ {␊
700␉ return setupAcpiNoMod();␊
701␉ }*/␊
702␉␊
703␉// Mozodojo: Load additional SSDTs␊
704␉struct acpi_2_ssdt *new_ssdt[32]; // 30 + 2 additional tables for pss & cst␊
705␉int ssdt_count=0;␊
706␉␊
707␉// TEST!␊
708␉/*if(new_ssdt[ssdt_count] = generate_test_ssdt())␊
709␉␉ssdt_count++;*/␊
710␉␊
711␉// SSDT Options␊
712␉bool drop_ssdt=false, generate_pstates=false, generate_cstates=false; ␊
713␉␊
714␉getBoolForKey(kDropSSDT, &drop_ssdt, &bootInfo->bootConfig);␊
715␉getBoolForKey(kGeneratePStates, &generate_pstates, &bootInfo->bootConfig);␊
716␉getBoolForKey(kGenerateCStates, &generate_cstates, &bootInfo->bootConfig);␊
717␉␊
718␉{␊
719␉␉int i;␊
720␉␉␊
721␉␉for (i=0; i<30; i++)␊
722␉␉{␊
723␉␉␉char filename[512];␊
724␊
725␉␉␉sprintf(filename, i>0?"SSDT-%d.aml":"SSDT.aml", i);␊
726␉␉␉␊
727␉␉␉if(new_ssdt[ssdt_count] = loadACPITable(filename)) ␊
728␉␉␉{␉␉␉␉␊
729␉␉␉␉ssdt_count++;␊
730␉␉␉}␊
731␉␉␉else ␊
732␉␉␉{␊
733␉␉␉␉break;␊
734␉␉␉}␊
735␉␉}␊
736␉}␊
737␉␉␊
738␉// Do the same procedure for both versions of ACPI␊
739␉for (version=0; version<2; version++) {␊
740␉␉struct acpi_2_rsdp *rsdp, *rsdp_mod;␊
741␉␉struct acpi_2_rsdt *rsdt, *rsdt_mod;␊
742␉␉int rsdplength;␊
743␉␉␊
744␉␉// Find original rsdp␊
745␉␉rsdp=(struct acpi_2_rsdp *)(version?getAddressOfAcpi20Table():getAddressOfAcpiTable());␊
746␉␉if (!rsdp)␊
747␉␉{␊
748␉␉␉DBG("No ACPI version %d found. Ignoring\n", version+1);␊
749␉␉␉if (version)␊
750␉␉␉␉addConfigurationTable(&gEfiAcpi20TableGuid, NULL, "ACPI_20");␊
751␉␉␉else␊
752␉␉␉␉addConfigurationTable(&gEfiAcpiTableGuid, NULL, "ACPI");␊
753␉␉␉continue;␊
754␉␉}␊
755␉␉rsdplength=version?rsdp->Length:20;␊
756␉␉␊
757␉␉DBG("RSDP version %d found @%x. Length=%d\n",version+1,rsdp,rsdplength);␊
758␉␉␊
759␉␉/* FIXME: no check that memory allocation succeeded ␊
760␉␉ * Copy and patch RSDP,RSDT, XSDT and FADT␊
761␉␉ * For more info see ACPI Specification pages 110 and following␊
762␉␉ */␊
763␉␉␊
764␉␉rsdp_mod=(struct acpi_2_rsdp *) AllocateKernelMemory(rsdplength);␊
765␉␉memcpy(rsdp_mod, rsdp, rsdplength); ␊
766␉␉rsdt=(struct acpi_2_rsdt *)(rsdp->RsdtAddress);␊
767␉␉␊
768␉␉DBG("RSDT @%x, Length %d\n",rsdt, rsdt->Length);␊
769␉␉␊
770␉␉if (rsdt && (uint32_t)rsdt !=0xffffffff && rsdt->Length<0x10000)␊
771␉␉{␊
772␉␉␉uint32_t *rsdt_entries;␊
773␉␉␉int rsdt_entries_num;␊
774␉␉␉int dropoffset=0, i;␊
775␉␉␉␊
776␉␉␉// mozo: using malloc cos I didn't found how to free already allocated kernel memory␊
777␉␉␉rsdt_mod=(struct acpi_2_rsdt *)malloc(rsdt->Length); ␊
778␉␉␉memcpy (rsdt_mod, rsdt, rsdt->Length);␊
779␉␉␉rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;␊
780␉␉␉rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;␊
781␉␉␉rsdt_entries=(uint32_t *)(rsdt_mod+1);␊
782␉␉␉for (i=0;i<rsdt_entries_num;i++)␊
783␉␉␉{␊
784␉␉␉␉char *table=(char *)(rsdt_entries[i]);␊
785␉␉␉␉if (!table)␊
786␉␉␉␉␉continue;␊
787␉␉␉␉␊
788␉␉␉␉DBG("TABLE %c%c%c%c,",table[0],table[1],table[2],table[3]);␊
789␉␉␉␉␊
790␉␉␉␉rsdt_entries[i-dropoffset]=rsdt_entries[i];␊
791␉␉␉␉␊
792␉␉␉␉if (drop_ssdt && tableSign(table, "SSDT"))␊
793␉␉␉␉{␊
794␉␉␉␉␉dropoffset++;␊
795␉␉␉␉␉continue;␊
796␉␉␉␉}␊
797␉␉␉␉if (tableSign(table, "DSDT"))␊
798␉␉␉␉{␊
799␉␉␉␉␉DBG("DSDT found\n");␊
800␉␉␉␉␉␊
801␉␉␉␉␉if(new_dsdt)␊
802␉␉␉␉␉␉rsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;␊
803␉␉␉␉␉␉␉␉␉␉␊
804␉␉␉␉␉continue;␊
805␉␉␉␉}␊
806␉␉␉␉if (tableSign(table, "FACP"))␊
807␉␉␉␉{␊
808␉␉␉␉␉struct acpi_2_fadt *fadt, *fadt_mod;␊
809␉␉␉␉␉fadt=(struct acpi_2_fadt *)rsdt_entries[i];␊
810␉␉␉␉␉␊
811␉␉␉␉␉DBG("FADT found @%x, Length %d\n",fadt, fadt->Length);␊
812␉␉␉␉␉␊
813␉␉␉␉␉if (!fadt || (uint32_t)fadt == 0xffffffff || fadt->Length>0x10000)␊
814␉␉␉␉␉{␊
815␉␉␉␉␉␉printf("FADT incorrect. Not modified\n");␊
816␉␉␉␉␉␉continue;␊
817␉␉␉␉␉}␊
818␉␉␉␉␉␊
819␉␉␉␉␉fadt_mod = patch_fadt(fadt, new_dsdt);␊
820␉␉␉␉␉rsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;␊
821␉␉␉␉␉␊
822␉␉␉␉␉// Generate _CST SSDT␊
823␉␉␉␉␉if (generate_cstates && (new_ssdt[ssdt_count] = generate_cst_ssdt(fadt_mod)))␊
824␉␉␉␉␉{␊
825␉␉␉␉␉␉generate_cstates = FALSE; // Generate SSDT only once!␊
826␉␉␉␉␉␉ssdt_count++;␊
827␉␉␉␉␉}␊
828␉␉␉␉␉␊
829␉␉␉␉␉// Generating _PSS SSDT␊
830␉␉␉␉␉if (generate_pstates && (new_ssdt[ssdt_count] = generate_pss_ssdt((void*)fadt_mod->DSDT)))␊
831␉␉␉␉␉{␊
832␉␉␉␉␉␉generate_pstates = FALSE; // Generate SSDT only once!␊
833␉␉␉␉␉␉ssdt_count++;␊
834␉␉␉␉␉}␊
835␉␉␉␉␉␊
836␉␉␉␉␉continue;␊
837␉␉␉␉}␊
838␉␉␉}␊
839␉␉␉DBG("\n");␊
840␉␉␉␊
841␉␉␉// Allocate rsdt in Kernel memory area␊
842␉␉␉rsdt_mod->Length += 4*ssdt_count - 4*dropoffset;␊
843␉␉␉struct acpi_2_rsdt *rsdt_copy = (struct acpi_2_rsdt *)AllocateKernelMemory(rsdt_mod->Length);␊
844␉␉␉memcpy (rsdt_copy, rsdt_mod, rsdt_mod->Length);␊
845␉␉␉free(rsdt_mod); rsdt_mod = rsdt_copy;␊
846␉␉␉rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;␊
847␉␉␉rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;␊
848␉␉␉rsdt_entries=(uint32_t *)(rsdt_mod+1);␊
849␉␉␉␊
850␉␉␉// Mozodojo: Insert additional SSDTs into RSDT␊
851␉␉␉if(ssdt_count>0)␊
852␉␉␉{␊
853␉␉␉␉int j;␊
854␉␉␉␉␊
855␉␉␉␉for (j=0; j<ssdt_count; j++)␊
856␉␉␉␉␉rsdt_entries[i-dropoffset+j]=(uint32_t)new_ssdt[j];␊
857␉␉␉␉␉␊
858␉␉␉␉verbose("RSDT: Added %d SSDT table(s)\n", ssdt_count);␊
859␉␉␉}␊
860␊
861␉␉␉// Correct the checksum of RSDT␊
862␉␉␉DBG("RSDT: Original checksum %d, ", rsdt_mod->Checksum);␊
863␉␉␉␊
864␉␉␉rsdt_mod->Checksum=0;␊
865␉␉␉rsdt_mod->Checksum=256-checksum8(rsdt_mod,rsdt_mod->Length);␊
866␉␉␉␊
867␉␉␉DBG("New checksum %d at %x\n", rsdt_mod->Checksum,rsdt_mod);␊
868␉␉}␊
869␉␉else␊
870␉␉{␊
871␉␉␉rsdp_mod->RsdtAddress=0;␊
872␉␉␉printf("RSDT not found or RSDT incorrect\n");␊
873␉␉}␊
874␉␉␊
875␉␉if (version)␊
876␉␉{␊
877␉␉␉struct acpi_2_xsdt *xsdt, *xsdt_mod;␊
878␉␉␉␊
879␉␉␉// FIXME: handle 64-bit address correctly␊
880␉␉␉␊
881␉␉␉xsdt=(struct acpi_2_xsdt*) ((uint32_t)rsdp->XsdtAddress);␊
882␉␉␉DBG("XSDT @%x;%x, Length=%d\n", (uint32_t)(rsdp->XsdtAddress>>32),(uint32_t)rsdp->XsdtAddress,␊
883␉␉␉␉xsdt->Length);␊
884␉␉␉if (xsdt && (uint64_t)rsdp->XsdtAddress<0xffffffff && xsdt->Length<0x10000)␊
885␉␉␉{␊
886␉␉␉␉uint64_t *xsdt_entries;␊
887␉␉␉␉int xsdt_entries_num, i;␊
888␉␉␉␉int dropoffset=0;␊
889␉␉␉␉␊
890␉␉␉␉// mozo: using malloc cos I didn't found how to free already allocated kernel memory␊
891␉␉␉␉xsdt_mod=(struct acpi_2_xsdt*)malloc(xsdt->Length); ␊
892␉␉␉␉memcpy(xsdt_mod, xsdt, xsdt->Length);␊
893␉␉␉␉rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;␊
894␉␉␉␉xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;␊
895␉␉␉␉xsdt_entries=(uint64_t *)(xsdt_mod+1);␊
896␉␉␉␉for (i=0;i<xsdt_entries_num;i++)␊
897␉␉␉␉{␊
898␉␉␉␉␉char *table=(char *)((uint32_t)(xsdt_entries[i]));␊
899␉␉␉␉␉if (!table)␊
900␉␉␉␉␉␉continue;␊
901␉␉␉␉␉␊
902␉␉␉␉␉xsdt_entries[i-dropoffset]=xsdt_entries[i];␊
903␉␉␉␉␉␊
904␉␉␉␉␉if (drop_ssdt && tableSign(table, "SSDT"))␊
905␉␉␉␉␉{␊
906␉␉␉␉␉␉dropoffset++;␊
907␉␉␉␉␉␉continue;␊
908␉␉␉␉␉}␉␉␉␉␉␊
909␉␉␉␉␉if (tableSign(table, "DSDT"))␊
910␉␉␉␉␉{␊
911␉␉␉␉␉␉DBG("DSDT found\n");␊
912␉␉␉␉␉␉␊
913␉␉␉␉␉␉if (new_dsdt) ␊
914␉␉␉␉␉␉␉xsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;␊
915␉␉␉␉␉␉␊
916␉␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊
917␉␉␉␉␉␉␊
918␉␉␉␉␉␉continue;␊
919␉␉␉␉␉}␊
920␉␉␉␉␉if (tableSign(table, "FACP"))␊
921␉␉␉␉␉{␊
922␉␉␉␉␉␉struct acpi_2_fadt *fadt, *fadt_mod;␊
923␉␉␉␉␉␉fadt=(struct acpi_2_fadt *)(uint32_t)xsdt_entries[i];␊
924␉␉␉␉␉␉␊
925␉␉␉␉␉␉DBG("FADT found @%x,%x, Length %d\n",(uint32_t)(xsdt_entries[i]>>32),fadt, ␊
926␉␉␉␉␉␉␉fadt->Length);␊
927␉␉␉␉␉␉␊
928␉␉␉␉␉␉if (!fadt || (uint64_t)xsdt_entries[i] >= 0xffffffff || fadt->Length>0x10000)␊
929␉␉␉␉␉␉{␊
930␉␉␉␉␉␉␉verbose("FADT incorrect or after 4GB. Dropping XSDT\n");␊
931␉␉␉␉␉␉␉goto drop_xsdt;␊
932␉␉␉␉␉␉}␊
933␉␉␉␉␉␉␊
934␉␉␉␉␉␉fadt_mod = patch_fadt(fadt, new_dsdt);␊
935␉␉␉␉␉␉xsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;␊
936␉␉␉␉␉␉␊
937␉␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊
938␉␉␉␉␉␉␊
939␉␉␉␉␉␉// Generate _CST SSDT␊
940␉␉␉␉␉␉if (generate_cstates && (new_ssdt[ssdt_count] = generate_cst_ssdt(fadt_mod))) ␊
941␉␉␉␉␉␉{␊
942␉␉␉␉␉␉␉generate_cstates = FALSE; // Generate SSDT only once!␊
943␉␉␉␉␉␉␉ssdt_count++;␊
944␉␉␉␉␉␉}␊
945␉␉␉␉␉␉␊
946␉␉␉␉␉␉// Generating _PSS SSDT␊
947␉␉␉␉␉␉if (generate_pstates && (new_ssdt[ssdt_count] = generate_pss_ssdt((void*)fadt_mod->DSDT)))␊
948␉␉␉␉␉␉{␊
949␉␉␉␉␉␉␉generate_pstates = FALSE; // Generate SSDT only once!␊
950␉␉␉␉␉␉␉ssdt_count++;␊
951␉␉␉␉␉␉}␊
952␉␉␉␉␉␉␊
953␉␉␉␉␉␉continue;␊
954␉␉␉␉␉}␊
955␉␉␉␉␉␊
956␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊
957␉␉␉␉␉␊
958␉␉␉␉}␊
959␉␉␉␉␊
960␉␉␉␉// Allocate xsdt in Kernel memory area␊
961␉␉␉␉xsdt_mod->Length += 8*ssdt_count - 8*dropoffset;␊
962␉␉␉␉struct acpi_2_xsdt *xsdt_copy = (struct acpi_2_xsdt *)AllocateKernelMemory(xsdt_mod->Length);␊
963␉␉␉␉memcpy(xsdt_copy, xsdt_mod, xsdt_mod->Length);␊
964␉␉␉␉free(xsdt_mod); xsdt_mod = xsdt_copy;␊
965␉␉␉␉rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;␊
966␉␉␉␉xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;␊
967␉␉␉␉xsdt_entries=(uint64_t *)(xsdt_mod+1);␊
968␉␉␉␉␊
969␉␉␉␉// Mozodojo: Insert additional SSDTs into XSDT␊
970␉␉␉␉if(ssdt_count>0)␊
971␉␉␉␉{␊
972␉␉␉␉␉int j;␊
973␉␉␉␉␉␊
974␉␉␉␉␉for (j=0; j<ssdt_count; j++)␊
975␉␉␉␉␉␉xsdt_entries[i-dropoffset+j]=(uint32_t)new_ssdt[j];␊
976␉␉␉␉␉␉␊
977␉␉␉␉␉verbose("Added %d SSDT table(s) into XSDT\n", ssdt_count);␊
978␉␉␉␉}␊
979␊
980␉␉␉␉// Correct the checksum of XSDT␊
981␉␉␉␉xsdt_mod->Checksum=0;␊
982␉␉␉␉xsdt_mod->Checksum=256-checksum8(xsdt_mod,xsdt_mod->Length);␊
983␉␉␉}␊
984␉␉␉else␊
985␉␉␉{␊
986␉␉␉drop_xsdt:␊
987␉␉␉␉␊
988␉␉␉␉DBG("About to drop XSDT\n");␊
989␉␉␉␉␊
990␉␉␉␉/*FIXME: Now we just hope that if MacOS doesn't find XSDT it reverts to RSDT. ␊
991␉␉␉␉ * A Better strategy would be to generate␊
992␉␉␉␉ */␊
993␉␉␉␉␊
994␉␉␉␉rsdp_mod->XsdtAddress=0xffffffffffffffffLL;␊
995␉␉␉␉verbose("XSDT not found or XSDT incorrect\n");␊
996␉␉␉}␊
997␉␉}␊
998␉␉␊
999␉␉// Correct the checksum of RSDP ␊
1000␉␉␊
1001␉␉DBG("RSDP: Original checksum %d, ", rsdp_mod->Checksum);␊
1002␉␉␊
1003␉␉rsdp_mod->Checksum=0;␊
1004␉␉rsdp_mod->Checksum=256-checksum8(rsdp_mod,20);␊
1005␉␉␊
1006␉␉DBG("New checksum %d\n", rsdp_mod->Checksum);␊
1007␉␉␊
1008␉␉if (version)␊
1009␉␉{␊
1010␉␉␉DBG("RSDP: Original extended checksum %d", rsdp_mod->ExtendedChecksum);␊
1011␉␉␉␊
1012␉␉␉rsdp_mod->ExtendedChecksum=0;␊
1013␉␉␉rsdp_mod->ExtendedChecksum=256-checksum8(rsdp_mod,rsdp_mod->Length);␊
1014␉␉␉␊
1015␉␉␉DBG("New extended checksum %d\n", rsdp_mod->ExtendedChecksum);␊
1016␉␉␉␊
1017␉␉}␊
1018␉␉␊
1019␉␉//verbose("Patched ACPI version %d DSDT\n", version+1);␊
1020␉␉if (version)␊
1021␉␉{␊
1022␉␉␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊
1023␉␉␉acpi20_p = (uint32_t)rsdp_mod;␊
1024␉␉␉addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");␊
1025␉␉}␊
1026␉␉else␊
1027␉␉{␊
1028␉␉␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊
1029␉␉␉acpi10_p = (uint32_t)rsdp_mod;␊
1030␉␉␉addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");␊
1031␉␉}␊
1032␉}␊
1033#if DEBUG_ACPI␊
1034␉printf("Press a key to continue... (DEBUG_ACPI)\n");␊
1035␉getc();␊
1036#endif␊
1037␉return 1;␊
1038}␊
1039

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