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Source at commit 356 created 13 years 11 months ago. By meklort, Fixed date, changed one or two things | |
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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 "dsdt_patcher.h"␊ |
12 | #include "platform.h"␊ |
13 | ␊ |
14 | #ifndef DEBUG_DSDT␊ |
15 | #define DEBUG_DSDT 0␊ |
16 | #endif␊ |
17 | ␊ |
18 | #if DEBUG_DSDT==2␊ |
19 | #define DBG(x...) {printf(x); sleep(1);}␊ |
20 | #elif DEBUG_DSDT==1␊ |
21 | #define DBG(x...) printf(x)␊ |
22 | #else␊ |
23 | #define DBG(x...)␊ |
24 | #endif␊ |
25 | ␊ |
26 | /* Gets the ACPI 1.0 RSDP address */␊ |
27 | static struct acpi_2_rsdp* getAddressOfAcpiTable()␊ |
28 | {␊ |
29 | /* TODO: Before searching the BIOS space we are supposed to search the first 1K of the EBDA */␊ |
30 | ␉␊ |
31 | void *acpi_addr = (void*)ACPI_RANGE_START;␊ |
32 | for(; acpi_addr <= (void*)ACPI_RANGE_END; acpi_addr += 16)␊ |
33 | {␊ |
34 | if(*(uint64_t *)acpi_addr == ACPI_SIGNATURE_UINT64_LE)␊ |
35 | {␊ |
36 | uint8_t csum = checksum8(acpi_addr, 20);␊ |
37 | if(csum == 0)␊ |
38 | {␊ |
39 | // Only return the table if it is a true version 1.0 table (Revision 0)␊ |
40 | if(((struct acpi_2_rsdp*)acpi_addr)->Revision == 0)␊ |
41 | return acpi_addr;␊ |
42 | }␊ |
43 | }␊ |
44 | }␊ |
45 | return NULL;␊ |
46 | }␊ |
47 | ␊ |
48 | /* Gets the ACPI 2.0 RSDP address */␊ |
49 | static struct acpi_2_rsdp* getAddressOfAcpi20Table()␊ |
50 | {␊ |
51 | /* TODO: Before searching the BIOS space we are supposed to search the first 1K of the EBDA */␊ |
52 | ␉␊ |
53 | void *acpi_addr = (void*)ACPI_RANGE_START;␊ |
54 | for(; acpi_addr <= (void*)ACPI_RANGE_END; acpi_addr += 16)␊ |
55 | {␊ |
56 | if(*(uint64_t *)acpi_addr == ACPI_SIGNATURE_UINT64_LE)␊ |
57 | {␊ |
58 | uint8_t csum = checksum8(acpi_addr, 20);␊ |
59 | ␊ |
60 | /* Only assume this is a 2.0 or better table if the revision is greater than 0␊ |
61 | * NOTE: ACPI 3.0 spec only seems to say that 1.0 tables have revision 1␊ |
62 | * and that the current revision is 2.. I am going to assume that rev > 0 is 2.0.␊ |
63 | */␊ |
64 | ␊ |
65 | if(csum == 0 && (((struct acpi_2_rsdp*)acpi_addr)->Revision > 0))␊ |
66 | {␊ |
67 | uint8_t csum2 = checksum8(acpi_addr, sizeof(struct acpi_2_rsdp));␊ |
68 | if(csum2 == 0)␊ |
69 | return acpi_addr;␊ |
70 | }␊ |
71 | }␊ |
72 | }␊ |
73 | return NULL;␊ |
74 | }␊ |
75 | /** The folowing ACPI Table search algo. should be reused anywhere needed:*/␊ |
76 | int search_and_get_acpi_fd(const char * filename, const char ** outDirspec)␊ |
77 | {␊ |
78 | int fd=0;␊ |
79 | const char * overriden_pathname=NULL;␊ |
80 | static char dirspec[512]="";␊ |
81 | static bool first_time =true; ␊ |
82 | int len=0;␊ |
83 | ␊ |
84 | /// Take in accound user overriding if it's DSDT only␊ |
85 | if (strstr(filename, "DSDT") && ␊ |
86 | getValueForKey(kDSDT, &overriden_pathname, &len, ␊ |
87 | ␉␉␉ &bootInfo->bootConfig))␊ |
88 | {␊ |
89 | sprintf(dirspec, "%s", overriden_pathname);␊ |
90 | fd=open (dirspec,0);␊ |
91 | if (fd>=0) goto success_fd;␊ |
92 | }␊ |
93 | // Check that dirspec is not already assigned with a path␊ |
94 | if (!first_time && *dirspec) ␊ |
95 | { // it is so start searching this cached patch first␊ |
96 | //extract path␊ |
97 | for (len=strlen(dirspec)-1; len; len--)␊ |
98 | if (dirspec[len]=='/' || len==0)␊ |
99 | {␊ |
100 | dirspec[len]='\0';␊ |
101 | break;␊ |
102 | }␊ |
103 | // now concat with the filename␊ |
104 | strncat(dirspec, "/", sizeof(dirspec));␊ |
105 | strncat(dirspec, filename, sizeof(dirspec));␊ |
106 | // and test to see if we don't have our big boy here:␊ |
107 | fd=open (dirspec,0);␊ |
108 | if (fd>=0) ␊ |
109 | {␊ |
110 | // printf("ACPI file search cache hit: file found at %s\n", dirspec);␊ |
111 | goto success_fd;␊ |
112 | }␊ |
113 | }␊ |
114 | // Start searching any potential location for ACPI Table␊ |
115 | // search the Extra folders first␊ |
116 | sprintf(dirspec,"/Extra/%s",filename); ␊ |
117 | fd=open (dirspec,0);␊ |
118 | if (fd>=0) goto success_fd;␊ |
119 | ␊ |
120 | sprintf(dirspec,"bt(0,0)/Extra/%s",filename);␊ |
121 | fd=open (dirspec,0);␊ |
122 | if (fd>=0) goto success_fd;␊ |
123 | ␊ |
124 | sprintf(dirspec, "%s", filename); // search current dir␊ |
125 | fd=open (dirspec,0);␊ |
126 | if (fd>=0) goto success_fd;␊ |
127 | ␊ |
128 | sprintf(dirspec, "/%s", filename); // search root␊ |
129 | fd=open (dirspec,0);␊ |
130 | if (fd>=0) goto success_fd;␊ |
131 | ␊ |
132 | // NOT FOUND:␊ |
133 | verbose("ACPI Table not found: %s\n", filename);␊ |
134 | if (outDirspec) *outDirspec = "";␊ |
135 | first_time = false;␊ |
136 | return -1;␊ |
137 | // FOUND␊ |
138 | success_fd:␊ |
139 | first_time = false;␊ |
140 | if (outDirspec) *outDirspec = dirspec; ␊ |
141 | return fd;␊ |
142 | }␊ |
143 | ␊ |
144 | void *loadACPITable (const char * filename)␊ |
145 | {␊ |
146 | ␉void *tableAddr;␊ |
147 | ␉const char * dirspec=NULL;␊ |
148 | ␉␊ |
149 | ␉int fd = search_and_get_acpi_fd(filename, &dirspec);␊ |
150 | ␊ |
151 | ␉if (fd>=0)␊ |
152 | ␉{␊ |
153 | ␉ tableAddr=(void*)AllocateKernelMemory(file_size (fd));␊ |
154 | ␉ if (tableAddr)␊ |
155 | ␉ {␊ |
156 | ␉ if (read (fd, tableAddr, file_size (fd))!=file_size (fd))␊ |
157 | ␉ {␊ |
158 | ␉␉ printf("Couldn't read table %s\n",dirspec);␊ |
159 | ␉␉ free (tableAddr);␊ |
160 | ␉␉ close (fd);␊ |
161 | ␉␉ return NULL;␊ |
162 | ␉ }␊ |
163 | ␉ ␊ |
164 | ␉ DBG("Table %s read and stored at: %x\n", dirspec, tableAddr);␊ |
165 | ␉ close (fd);␊ |
166 | ␉ return tableAddr;␊ |
167 | ␉ }␊ |
168 | ␉ close (fd);␊ |
169 | printf("Couldn't allocate memory for table \n", dirspec);␊ |
170 | ␉} ␊ |
171 | ␉printf("Couldn't find table %s\n", filename);␊ |
172 | ␉return NULL;␊ |
173 | }␊ |
174 | ␊ |
175 | ␊ |
176 | struct acpi_2_fadt *␊ |
177 | patch_fadt(struct acpi_2_fadt *fadt, void *new_dsdt)␊ |
178 | {␊ |
179 | ␊ |
180 | extern void setupSystemType(); ␊ |
181 | ␉␊ |
182 | ␉struct acpi_2_fadt *fadt_mod;␊ |
183 | ␉bool fadt_rev2_needed = false;␊ |
184 | ␉bool fix_restart;␊ |
185 | ␉const char * value;␊ |
186 | ␉␊ |
187 | ␉// Restart Fix␊ |
188 | ␉if (Platform.CPU.Vendor == 0x756E6547) {␉/* Intel */␊ |
189 | ␉␉fix_restart = true;␊ |
190 | ␉␉getBoolForKey(kRestartFix, &fix_restart, &bootInfo->bootConfig);␊ |
191 | ␉} else {␊ |
192 | ␉␉verbose ("Not an Intel platform: Restart Fix not applied !!!\n");␊ |
193 | ␉␉fix_restart = false;␊ |
194 | ␉}␊ |
195 | ␊ |
196 | ␉if (fix_restart) fadt_rev2_needed = true;␊ |
197 | ␊ |
198 | ␉// Allocate new fadt table␊ |
199 | ␉if (fadt->Length < 0x84 && fadt_rev2_needed)␊ |
200 | ␉{␊ |
201 | ␉␉fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(0x84);␊ |
202 | ␉␉memcpy(fadt_mod, fadt, fadt->Length);␊ |
203 | ␉␉fadt_mod->Length = 0x84;␊ |
204 | ␉␉fadt_mod->Revision = 0x02; // FADT rev 2 (ACPI 1.0B MS extensions)␊ |
205 | ␉}␊ |
206 | ␉else␊ |
207 | ␉{␊ |
208 | ␉␉fadt_mod=(struct acpi_2_fadt *)AllocateKernelMemory(fadt->Length);␊ |
209 | ␉␉memcpy(fadt_mod, fadt, fadt->Length);␊ |
210 | ␉}␊ |
211 | ␉// Determine system type / PM_Model␊ |
212 | ␉if ( (value=getStringForKey(kSystemType, &bootInfo->bootConfig))!=NULL)␊ |
213 | ␉{␊ |
214 | ␉ if (Platform.Type > 6) ␊ |
215 | ␉ {␊ |
216 | ␉ if(fadt_mod->PM_Profile<=6)␊ |
217 | ␉ Platform.Type = fadt_mod->PM_Profile; // get the fadt if correct␊ |
218 | ␉ else ␊ |
219 | ␉ Platform.Type = 1;␉␉/* Set a fixed value (Desktop) */␊ |
220 | ␉ verbose("Error: system-type must be 0..6. Defaulting to %d !\n", Platform.Type);␊ |
221 | ␉ }␊ |
222 | ␉ else␊ |
223 | ␉ Platform.Type = (unsigned char) strtoul(value, NULL, 10);␊ |
224 | ␉}␊ |
225 | ␉// Set PM_Profile from System-type if only if user wanted this value to be forced␊ |
226 | ␉if (fadt_mod->PM_Profile != Platform.Type) ␊ |
227 | ␉{␊ |
228 | ␉ if (value) ␊ |
229 | ␉ { // user has overriden the SystemType so take care of it in FACP␊ |
230 | ␉␉verbose("FADT: changing PM_Profile from 0x%02x to 0x%02x\n", fadt_mod->PM_Profile, Platform.Type);␊ |
231 | ␉␉fadt_mod->PM_Profile = Platform.Type;␊ |
232 | ␉ }␊ |
233 | ␉ else␊ |
234 | ␉ { // PM_Profile has a different value and no override has been set, so reflect the user value to ioregs␊ |
235 | ␉ Platform.Type = fadt_mod->PM_Profile <= 6 ? fadt_mod->PM_Profile : 1;␊ |
236 | ␉ } ␊ |
237 | ␉}␊ |
238 | ␉// We now have to write the systemm-type in ioregs: we cannot do it before in setupDeviceTree()␊ |
239 | ␉// because we need to take care of facp original content, if it is correct.␊ |
240 | ␉setupSystemType();␊ |
241 | ␊ |
242 | ␉// Patch FADT to fix restart␊ |
243 | ␉if (fix_restart)␊ |
244 | ␉{␊ |
245 | ␉␉fadt_mod->Flags|= 0x400;␊ |
246 | ␉␉fadt_mod->Reset_SpaceID␉␉= 0x01; // System I/O␊ |
247 | ␉␉fadt_mod->Reset_BitWidth␉= 0x08; // 1 byte␊ |
248 | ␉␉fadt_mod->Reset_BitOffset␉= 0x00; // Offset 0␊ |
249 | ␉␉fadt_mod->Reset_AccessWidth␉= 0x01; // Byte access␊ |
250 | ␉␉fadt_mod->Reset_Address␉␉= 0x0cf9; // Address of the register␊ |
251 | ␉␉fadt_mod->Reset_Value␉␉= 0x06; // Value to write to reset the system␊ |
252 | ␉␉verbose("FADT: Restart Fix applied !\n");␊ |
253 | ␉}␊ |
254 | ␊ |
255 | ␉// Save old DSDT to the IORegistery␊ |
256 | ␉Node* node = DT__FindNode("/", false);␊ |
257 | ␉if(node != NULL)␊ |
258 | ␉{␊ |
259 | ␉␉node = DT__AddChild(node, "dsdt");␊ |
260 | ␉␉␉␉␊ |
261 | ␉␉struct acpi_2_dsdt *dsdt;␊ |
262 | ␉␉dsdt = (struct acpi_2_dsdt*) (fadt_mod->DSDT);␊ |
263 | ␉␉DT__AddProperty(node, "originaldsdt", (dsdt->Length + sizeof(struct acpi_2_dsdt) - 1), (void*)dsdt);␉/// Insert old dsdt. Length is header length (36) + dsdt length␊ |
264 | ␉␉␊ |
265 | ␉}␊ |
266 | ␉␊ |
267 | ␉␊ |
268 | ␉// Patch DSDT Address␊ |
269 | ␉DBG("DSDT: Old @%x,%x, ",fadt_mod->DSDT,fadt_mod->X_DSDT);␊ |
270 | ␊ |
271 | ␉␊ |
272 | ␉fadt_mod->DSDT=(uint32_t)new_dsdt;␊ |
273 | ␉if ((uint32_t)(&(fadt_mod->X_DSDT))-(uint32_t)fadt_mod+8<=fadt_mod->Length)␊ |
274 | ␉␉fadt_mod->X_DSDT=(uint32_t)new_dsdt;␊ |
275 | ␊ |
276 | ␉DBG("New @%x,%x\n",fadt_mod->DSDT,fadt_mod->X_DSDT);␊ |
277 | ␊ |
278 | ␉// Correct the checksum␊ |
279 | ␉fadt_mod->Checksum=0;␊ |
280 | ␉fadt_mod->Checksum=256-checksum8(fadt_mod,fadt_mod->Length);␊ |
281 | ␊ |
282 | ␉return fadt_mod;␊ |
283 | }␊ |
284 | ␊ |
285 | /* Setup ACPI without replacing DSDT. */␊ |
286 | int setupAcpiNoMod()␊ |
287 | {␊ |
288 | //␉addConfigurationTable(&gEfiAcpiTableGuid, getAddressOfAcpiTable(), "ACPI");␊ |
289 | //␉addConfigurationTable(&gEfiAcpi20TableGuid, getAddressOfAcpi20Table(), "ACPI_20");␊ |
290 | ␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊ |
291 | ␉acpi10_p = (uint32_t)getAddressOfAcpiTable();␊ |
292 | ␉acpi20_p = (uint32_t)getAddressOfAcpi20Table();␊ |
293 | ␉addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");␊ |
294 | ␉if(acpi20_p) addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");␊ |
295 | ␉return 1;␊ |
296 | }␊ |
297 | ␊ |
298 | /* Setup ACPI. Replace DSDT if DSDT.aml is found */␊ |
299 | int setupAcpi(void)␊ |
300 | {␊ |
301 | ␉int version;␊ |
302 | ␉void *new_dsdt;␊ |
303 | ␊ |
304 | ␉bool drop_ssdt;␊ |
305 | ␉␊ |
306 | ␉// Load replacement DSDT␊ |
307 | ␉new_dsdt=loadACPITable("DSDT.aml");␊ |
308 | ␉if (!new_dsdt)␊ |
309 | ␉{␊ |
310 | ␉␉return setupAcpiNoMod();␊ |
311 | ␉}␊ |
312 | ␊ |
313 | ␉DBG("New DSDT Loaded in memory\n");␊ |
314 | ␉␊ |
315 | ␉{␊ |
316 | ␉␉bool tmp;␊ |
317 | ␉␉drop_ssdt=getBoolForKey(kDropSSDT, &tmp, &bootInfo->bootConfig)&&tmp;␊ |
318 | ␉}␊ |
319 | ␊ |
320 | ␉// Do the same procedure for both versions of ACPI␊ |
321 | ␉for (version=0; version<2; version++) {␊ |
322 | ␉␉struct acpi_2_rsdp *rsdp, *rsdp_mod;␊ |
323 | ␉␉struct acpi_2_rsdt *rsdt, *rsdt_mod;␊ |
324 | ␉␉int rsdplength;␊ |
325 | ␉␉␊ |
326 | ␉␉// Find original rsdp␊ |
327 | ␉␉rsdp=(struct acpi_2_rsdp *)(version?getAddressOfAcpi20Table():getAddressOfAcpiTable());␊ |
328 | ␉␉if (!rsdp)␊ |
329 | ␉␉{␊ |
330 | ␉␉␉DBG("No ACPI version %d found. Ignoring\n", version+1);␊ |
331 | ␉␉␉if (version)␊ |
332 | ␉␉␉␉addConfigurationTable(&gEfiAcpi20TableGuid, NULL, "ACPI_20");␊ |
333 | ␉␉␉else␊ |
334 | ␉␉␉␉addConfigurationTable(&gEfiAcpiTableGuid, NULL, "ACPI");␊ |
335 | ␉␉␉continue;␊ |
336 | ␉␉}␊ |
337 | ␉␉rsdplength=version?rsdp->Length:20;␊ |
338 | ␊ |
339 | ␉␉DBG("RSDP version %d found @%x. Length=%d\n",version+1,rsdp,rsdplength);␊ |
340 | ␊ |
341 | ␉␉/* FIXME: no check that memory allocation succeeded ␊ |
342 | ␉␉ * Copy and patch RSDP,RSDT, XSDT and FADT␊ |
343 | ␉␉ * For more info see ACPI Specification pages 110 and following␊ |
344 | ␉␉ */␊ |
345 | ␊ |
346 | ␉␉rsdp_mod=(struct acpi_2_rsdp *) AllocateKernelMemory(rsdplength);␊ |
347 | ␉␉memcpy(rsdp_mod, rsdp, rsdplength); ␊ |
348 | ␉␉rsdt=(struct acpi_2_rsdt *)(rsdp->RsdtAddress);␊ |
349 | ␊ |
350 | ␉␉DBG("RSDT @%x, Length %d\n",rsdt, rsdt->Length);␊ |
351 | ␉␉␊ |
352 | ␉␉if (rsdt && (uint32_t)rsdt !=0xffffffff && rsdt->Length<0x10000)␊ |
353 | ␉␉{␊ |
354 | ␉␉␉uint32_t *rsdt_entries;␊ |
355 | ␉␉␉int rsdt_entries_num;␊ |
356 | ␉␉␉int dropoffset=0, i;␊ |
357 | ␉␉␉␊ |
358 | ␉␉␉rsdt_mod=(struct acpi_2_rsdt *)AllocateKernelMemory(rsdt->Length); ␊ |
359 | ␉␉␉memcpy (rsdt_mod, rsdt, rsdt->Length);␊ |
360 | ␉␉␉rsdp_mod->RsdtAddress=(uint32_t)rsdt_mod;␊ |
361 | ␉␉␉rsdt_entries_num=(rsdt_mod->Length-sizeof(struct acpi_2_rsdt))/4;␊ |
362 | ␉␉␉rsdt_entries=(uint32_t *)(rsdt_mod+1);␊ |
363 | ␉␉␉for (i=0;i<rsdt_entries_num;i++)␊ |
364 | ␉␉␉{␊ |
365 | ␉␉␉␉char *table=(char *)(rsdt_entries[i]);␊ |
366 | ␉␉␉␉if (!table)␊ |
367 | ␉␉␉␉␉continue;␊ |
368 | ␊ |
369 | ␉␉␉␉DBG("TABLE %c%c%c%c,",table[0],table[1],table[2],table[3]);␊ |
370 | ␊ |
371 | ␉␉␉␉rsdt_entries[i-dropoffset]=rsdt_entries[i];␊ |
372 | ␉␉␉␉if (drop_ssdt && table[0]=='S' && table[1]=='S' && table[2]=='D' && table[3]=='T')␊ |
373 | ␉␉␉␉{␊ |
374 | ␉␉␉␉␉dropoffset++;␊ |
375 | ␉␉␉␉␉continue;␊ |
376 | ␉␉␉␉}␊ |
377 | ␉␉␉␉if (table[0]=='D' && table[1]=='S' && table[2]=='D' && table[3]=='T')␊ |
378 | ␉␉␉␉{␊ |
379 | ␉␉␉␉␉DBG("DSDT found\n");␊ |
380 | ␉␉␉␉␉rsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;␊ |
381 | ␉␉␉␉␉continue;␊ |
382 | ␉␉␉␉}␊ |
383 | ␉␉␉␉if (table[0]=='F' && table[1]=='A' && table[2]=='C' && table[3]=='P')␊ |
384 | ␉␉␉␉{␊ |
385 | ␉␉␉␉␉struct acpi_2_fadt *fadt, *fadt_mod;␊ |
386 | ␉␉␉␉␉fadt=(struct acpi_2_fadt *)rsdt_entries[i];␊ |
387 | ␊ |
388 | ␉␉␉␉␉DBG("FADT found @%x, Length %d\n",fadt, fadt->Length);␊ |
389 | ␊ |
390 | ␉␉␉␉␉if (!fadt || (uint32_t)fadt == 0xffffffff || fadt->Length>0x10000)␊ |
391 | ␉␉␉␉␉{␊ |
392 | ␉␉␉␉␉␉printf("FADT incorrect. Not modified\n");␊ |
393 | ␉␉␉␉␉␉continue;␊ |
394 | ␉␉␉␉␉}␊ |
395 | ␉␉␉␉␉␊ |
396 | ␉␉␉␉␉fadt_mod = patch_fadt(fadt, new_dsdt);␊ |
397 | ␉␉␉␉␉rsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;␊ |
398 | ␉␉␉␉␉continue;␊ |
399 | ␉␉␉␉}␊ |
400 | ␉␉␉}␊ |
401 | ␉␉␉DBG("\n");␊ |
402 | ␊ |
403 | ␉␉␉// Correct the checksum of RSDT␊ |
404 | ␉␉␉rsdt_mod->Length-=4*dropoffset;␊ |
405 | ␊ |
406 | ␉␉␉DBG("RSDT: Original checksum %d, ", rsdt_mod->Checksum);␊ |
407 | ␊ |
408 | ␉␉␉rsdt_mod->Checksum=0;␊ |
409 | ␉␉␉rsdt_mod->Checksum=256-checksum8(rsdt_mod,rsdt_mod->Length);␊ |
410 | ␊ |
411 | ␉␉␉DBG("New checksum %d at %x\n", rsdt_mod->Checksum,rsdt_mod);␊ |
412 | ␉␉}␊ |
413 | ␉␉else␊ |
414 | ␉␉{␊ |
415 | ␉␉␉rsdp_mod->RsdtAddress=0;␊ |
416 | ␉␉␉printf("RSDT not found or RSDT incorrect\n");␊ |
417 | ␉␉}␊ |
418 | ␊ |
419 | ␉␉if (version)␊ |
420 | ␉␉{␊ |
421 | ␉␉␉struct acpi_2_xsdt *xsdt, *xsdt_mod;␊ |
422 | ␊ |
423 | ␉␉␉// FIXME: handle 64-bit address correctly␊ |
424 | ␊ |
425 | ␉␉␉xsdt=(struct acpi_2_xsdt*) ((uint32_t)rsdp->XsdtAddress);␊ |
426 | ␉␉␉DBG("XSDT @%x;%x, Length=%d\n", (uint32_t)(rsdp->XsdtAddress>>32),(uint32_t)rsdp->XsdtAddress,␊ |
427 | ␉␉␉␉␉xsdt->Length);␊ |
428 | ␉␉␉if (xsdt && (uint64_t)rsdp->XsdtAddress<0xffffffff && xsdt->Length<0x10000)␊ |
429 | ␉␉␉{␊ |
430 | ␉␉␉␉uint64_t *xsdt_entries;␊ |
431 | ␉␉␉␉int xsdt_entries_num, i;␊ |
432 | ␉␉␉␉int dropoffset=0;␊ |
433 | ␉␉␉␉␊ |
434 | ␉␉␉␉xsdt_mod=(struct acpi_2_xsdt*)AllocateKernelMemory(xsdt->Length); ␊ |
435 | ␉␉␉␉memcpy(xsdt_mod, xsdt, xsdt->Length);␊ |
436 | ␉␉␉␉rsdp_mod->XsdtAddress=(uint32_t)xsdt_mod;␊ |
437 | ␉␉␉␉xsdt_entries_num=(xsdt_mod->Length-sizeof(struct acpi_2_xsdt))/8;␊ |
438 | ␉␉␉␉xsdt_entries=(uint64_t *)(xsdt_mod+1);␊ |
439 | ␉␉␉␉for (i=0;i<xsdt_entries_num;i++)␊ |
440 | ␉␉␉␉{␊ |
441 | ␉␉␉␉␉char *table=(char *)((uint32_t)(xsdt_entries[i]));␊ |
442 | ␉␉␉␉␉if (!table)␊ |
443 | ␉␉␉␉␉␉continue;␊ |
444 | ␉␉␉␉␉xsdt_entries[i-dropoffset]=xsdt_entries[i];␊ |
445 | ␉␉␉␉␉if (drop_ssdt && table[0]=='S' && table[1]=='S' && table[2]=='D' && table[3]=='T')␊ |
446 | ␉␉␉␉␉{␊ |
447 | ␉␉␉␉␉␉dropoffset++;␊ |
448 | ␉␉␉␉␉␉continue;␊ |
449 | ␉␉␉␉␉}␉␉␉␉␉␊ |
450 | ␉␉␉␉␉if (table[0]=='D' && table[1]=='S' && table[2]=='D' && table[3]=='T')␊ |
451 | ␉␉␉␉␉{␊ |
452 | ␉␉␉␉␉␉DBG("DSDT found\n");␊ |
453 | ␊ |
454 | ␉␉␉␉␉␉xsdt_entries[i-dropoffset]=(uint32_t)new_dsdt;␊ |
455 | ␊ |
456 | ␉␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊ |
457 | ␉␉␉␉␉␉␊ |
458 | ␉␉␉␉␉␉continue;␊ |
459 | ␉␉␉␉␉}␊ |
460 | ␉␉␉␉␉if (table[0]=='F' && table[1]=='A' && table[2]=='C' && table[3]=='P')␊ |
461 | ␉␉␉␉␉{␊ |
462 | ␉␉␉␉␉␉struct acpi_2_fadt *fadt, *fadt_mod;␊ |
463 | ␉␉␉␉␉␉fadt=(struct acpi_2_fadt *)(uint32_t)xsdt_entries[i];␊ |
464 | ␊ |
465 | ␉␉␉␉␉␉DBG("FADT found @%x,%x, Length %d\n",(uint32_t)(xsdt_entries[i]>>32),fadt, ␊ |
466 | ␉␉␉␉␉␉␉␉ fadt->Length);␊ |
467 | ␊ |
468 | ␉␉␉␉␉␉if (!fadt || (uint64_t)xsdt_entries[i] >= 0xffffffff || fadt->Length>0x10000)␊ |
469 | ␉␉␉␉␉␉{␊ |
470 | ␉␉␉␉␉␉␉verbose("FADT incorrect or after 4GB. Dropping XSDT\n");␊ |
471 | ␉␉␉␉␉␉␉goto drop_xsdt;␊ |
472 | ␉␉␉␉␉␉}␊ |
473 | ␊ |
474 | ␉␉␉␉␉␉fadt_mod = patch_fadt(fadt, new_dsdt);␊ |
475 | ␉␉␉␉␉␉xsdt_entries[i-dropoffset]=(uint32_t)fadt_mod;␊ |
476 | ␊ |
477 | ␉␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊ |
478 | ␊ |
479 | ␉␉␉␉␉␉continue;␊ |
480 | ␉␉␉␉␉}␊ |
481 | ␊ |
482 | ␉␉␉␉␉DBG("TABLE %c%c%c%c@%x,",table[0],table[1],table[2],table[3],xsdt_entries[i]);␊ |
483 | ␊ |
484 | ␉␉␉␉}␊ |
485 | ␊ |
486 | ␉␉␉␉// Correct the checksum of XSDT␊ |
487 | ␉␉␉␉xsdt_mod->Length-=8*dropoffset;␊ |
488 | ␉␉␉␉xsdt_mod->Checksum=0;␊ |
489 | ␉␉␉␉xsdt_mod->Checksum=256-checksum8(xsdt_mod,xsdt_mod->Length);␊ |
490 | ␉␉␉}␊ |
491 | ␉␉␉else␊ |
492 | ␉␉␉{␊ |
493 | ␉␉␉drop_xsdt:␊ |
494 | ␊ |
495 | ␉␉␉␉DBG("About to drop XSDT\n");␊ |
496 | ␊ |
497 | ␉␉␉␉/*FIXME: Now we just hope that if MacOS doesn't find XSDT it reverts to RSDT. ␊ |
498 | ␉␉␉␉ * A Better strategy would be to generate␊ |
499 | ␉␉␉␉ */␊ |
500 | ␊ |
501 | ␉␉␉␉rsdp_mod->XsdtAddress=0xffffffffffffffffLL;␊ |
502 | ␉␉␉␉verbose("XSDT not found or XSDT incorrect\n");␊ |
503 | ␉␉␉}␊ |
504 | ␉␉}␊ |
505 | ␊ |
506 | ␉␉// Correct the checksum of RSDP ␊ |
507 | ␊ |
508 | ␉␉DBG("RSDP: Original checksum %d, ", rsdp_mod->Checksum);␊ |
509 | ␊ |
510 | ␉␉rsdp_mod->Checksum=0;␊ |
511 | ␉␉rsdp_mod->Checksum=256-checksum8(rsdp_mod,20);␊ |
512 | ␊ |
513 | ␉␉DBG("New checksum %d\n", rsdp_mod->Checksum);␊ |
514 | ␊ |
515 | ␉␉if (version)␊ |
516 | ␉␉{␊ |
517 | ␉␉␉DBG("RSDP: Original extended checksum %d", rsdp_mod->ExtendedChecksum);␊ |
518 | ␊ |
519 | ␉␉␉rsdp_mod->ExtendedChecksum=0;␊ |
520 | ␉␉␉rsdp_mod->ExtendedChecksum=256-checksum8(rsdp_mod,rsdp_mod->Length);␊ |
521 | ␊ |
522 | ␉␉␉DBG("New extended checksum %d\n", rsdp_mod->ExtendedChecksum);␊ |
523 | ␊ |
524 | ␉␉}␊ |
525 | ␉␉␊ |
526 | ␉␉verbose("Patched ACPI version %d DSDT\n", version+1);␊ |
527 | ␉␉if (version)␊ |
528 | ␉␉{␊ |
529 | ␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊ |
530 | ␉␉␉acpi20_p = (uint32_t)rsdp_mod;␊ |
531 | ␉␉␉addConfigurationTable(&gEfiAcpi20TableGuid, &acpi20_p, "ACPI_20");␊ |
532 | ␉␉}␊ |
533 | ␉␉else␊ |
534 | ␉␉{␊ |
535 | ␉/* XXX aserebln why uint32 cast if pointer is uint64 ? */␊ |
536 | ␉␉␉acpi10_p = (uint32_t)rsdp_mod;␊ |
537 | ␉␉␉addConfigurationTable(&gEfiAcpiTableGuid, &acpi10_p, "ACPI");␊ |
538 | ␉␉}␊ |
539 | ␉}␊ |
540 | #if DEBUG_DSDT␊ |
541 | ␉printf("Press a key to continue... (DEBUG_DSDT)\n");␊ |
542 | ␉getc();␊ |
543 | #endif␊ |
544 | ␉return 1;␊ |
545 | }␊ |
546 |