Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2009 Rudolf Marek <r.marek@assembler.cz> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License v2 as published by |
| 8 | * the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | /* how many nesting we support */ |
| 21 | #define ACPIGEN_LENSTACK_SIZE 10 |
| 22 | |
| 23 | /* if you need to change this, change the acpigen_write_f and |
| 24 | acpigen_patch_len */ |
| 25 | |
| 26 | #define ACPIGEN_MAXLEN 0xfff |
| 27 | |
| 28 | #include <string.h> |
| 29 | #include <arch/acpigen.h> |
| 30 | #include <console/console.h> |
| 31 | |
| 32 | static char *gencurrent; |
| 33 | |
| 34 | char *len_stack[ACPIGEN_LENSTACK_SIZE]; |
| 35 | int ltop = 0; |
| 36 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 37 | static int acpigen_write_len_f(void) |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 38 | { |
| 39 | ASSERT(ltop < (ACPIGEN_LENSTACK_SIZE - 1)) |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 40 | len_stack[ltop++] = gencurrent; |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 41 | acpigen_emit_byte(0); |
| 42 | acpigen_emit_byte(0); |
| 43 | return 2; |
| 44 | } |
| 45 | |
| 46 | void acpigen_patch_len(int len) |
| 47 | { |
| 48 | ASSERT(len <= ACPIGEN_MAXLEN) |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 49 | ASSERT(ltop > 0) |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 50 | char *p = len_stack[--ltop]; |
| 51 | /* generate store length for 0xfff max */ |
| 52 | p[0] = (0x40 | (len & 0xf)); |
| 53 | p[1] = (len >> 4 & 0xff); |
| 54 | |
| 55 | } |
| 56 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 57 | void acpigen_set_current(char *curr) |
| 58 | { |
| 59 | gencurrent = curr; |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 60 | } |
| 61 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 62 | char *acpigen_get_current(void) |
| 63 | { |
| 64 | return gencurrent; |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | int acpigen_emit_byte(unsigned char b) |
| 68 | { |
| 69 | (*gencurrent++) = b; |
| 70 | return 1; |
| 71 | } |
| 72 | |
| 73 | int acpigen_write_package(int nr_el) |
| 74 | { |
| 75 | int len; |
| 76 | /* package op */ |
| 77 | acpigen_emit_byte(0x12); |
| 78 | len = acpigen_write_len_f(); |
| 79 | acpigen_emit_byte(nr_el); |
| 80 | return len + 2; |
| 81 | } |
| 82 | |
| 83 | int acpigen_write_byte(unsigned int data) |
| 84 | { |
| 85 | /* byte op */ |
| 86 | acpigen_emit_byte(0xa); |
| 87 | acpigen_emit_byte(data & 0xff); |
| 88 | return 2; |
| 89 | } |
| 90 | |
| 91 | int acpigen_write_dword(unsigned int data) |
| 92 | { |
| 93 | /* dword op */ |
| 94 | acpigen_emit_byte(0xc); |
| 95 | acpigen_emit_byte(data & 0xff); |
| 96 | acpigen_emit_byte((data >> 8) & 0xff); |
| 97 | acpigen_emit_byte((data >> 16) & 0xff); |
| 98 | acpigen_emit_byte((data >> 24) & 0xff); |
| 99 | return 5; |
| 100 | } |
| 101 | |
Carl-Daniel Hailfinger | d58671c | 2009-02-17 21:38:51 +0000 | [diff] [blame] | 102 | int acpigen_write_qword(uint64_t data) |
| 103 | { |
| 104 | /* qword op */ |
| 105 | acpigen_emit_byte(0xe); |
| 106 | acpigen_emit_byte(data & 0xff); |
| 107 | acpigen_emit_byte((data >> 8) & 0xff); |
| 108 | acpigen_emit_byte((data >> 16) & 0xff); |
| 109 | acpigen_emit_byte((data >> 24) & 0xff); |
| 110 | acpigen_emit_byte((data >> 32) & 0xff); |
| 111 | acpigen_emit_byte((data >> 40) & 0xff); |
| 112 | acpigen_emit_byte((data >> 48) & 0xff); |
| 113 | acpigen_emit_byte((data >> 56) & 0xff); |
| 114 | return 9; |
| 115 | } |
| 116 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 117 | int acpigen_write_name_byte(char *name, uint8_t val) |
| 118 | { |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 119 | int len; |
| 120 | len = acpigen_write_name(name); |
| 121 | len += acpigen_write_byte(val); |
| 122 | return len; |
| 123 | } |
| 124 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 125 | int acpigen_write_name_dword(char *name, uint32_t val) |
| 126 | { |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 127 | int len; |
| 128 | len = acpigen_write_name(name); |
| 129 | len += acpigen_write_dword(val); |
| 130 | return len; |
| 131 | } |
| 132 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 133 | int acpigen_write_name_qword(char *name, uint64_t val) |
| 134 | { |
Carl-Daniel Hailfinger | d58671c | 2009-02-17 21:38:51 +0000 | [diff] [blame] | 135 | int len; |
| 136 | len = acpigen_write_name(name); |
| 137 | len += acpigen_write_qword(val); |
| 138 | return len; |
| 139 | } |
| 140 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 141 | int acpigen_emit_stream(char *data, int size) |
| 142 | { |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 143 | int i; |
| 144 | for (i = 0; i < size; i++) { |
| 145 | acpigen_emit_byte(data[i]); |
| 146 | } |
| 147 | return size; |
| 148 | } |
| 149 | |
Rudolf Marek | 3310d75 | 2009-06-21 20:26:13 +0000 | [diff] [blame^] | 150 | /* The NameString are bit tricky, each element can be 4 chars, if |
| 151 | less its padded with underscore. Check 18.2.2 and 18.4 |
| 152 | and 5.3 of ACPI specs 3.0 for details |
| 153 | */ |
| 154 | |
| 155 | static int acpigen_emit_simple_namestring(char *name) { |
| 156 | int i, len = 0; |
| 157 | char ud[] = "____"; |
| 158 | for (i = 0; i < 4; i++) { |
| 159 | if ((name[i] == '\0') || (name[i] == '.')) { |
| 160 | len += acpigen_emit_stream(ud, 4 - i); |
| 161 | break; |
| 162 | } else { |
| 163 | len += acpigen_emit_byte(name[i]); |
| 164 | } |
| 165 | } |
| 166 | return len; |
| 167 | } |
| 168 | |
| 169 | static int acpigen_emit_double_namestring(char *name, int dotpos) { |
| 170 | int len = 0; |
| 171 | /* mark dual name prefix */ |
| 172 | len += acpigen_emit_byte(0x2e); |
| 173 | len += acpigen_emit_simple_namestring(name); |
| 174 | len += acpigen_emit_simple_namestring(&name[dotpos + 1]); |
| 175 | return len; |
| 176 | } |
| 177 | |
| 178 | static int acpigen_emit_multi_namestring(char *name) { |
| 179 | int len = 0, count = 0; |
| 180 | unsigned char *pathlen; |
| 181 | /* mark multi name prefix */ |
| 182 | len += acpigen_emit_byte(0x2f); |
| 183 | len += acpigen_emit_byte(0x0); |
| 184 | pathlen = ((unsigned char *) acpigen_get_current()) - 1; |
| 185 | |
| 186 | while (name[0] != '\0') { |
| 187 | len += acpigen_emit_simple_namestring(name); |
| 188 | /* find end or next entity */ |
| 189 | while ((name[0] != '.') && (name[0] != '\0')) |
| 190 | name++; |
| 191 | /* forward to next */ |
| 192 | if (name[0] == '.') |
| 193 | name++; |
| 194 | count++; |
| 195 | } |
| 196 | |
| 197 | pathlen[0] = count; |
| 198 | return len; |
| 199 | } |
| 200 | |
| 201 | |
| 202 | int acpigen_emit_namestring(char *namepath) { |
| 203 | int dotcount = 0, i; |
| 204 | int dotpos; |
| 205 | int len = 0; |
| 206 | |
| 207 | /* we can start with a \ */ |
| 208 | if (namepath[0] == '\\') { |
| 209 | len += acpigen_emit_byte('\\'); |
| 210 | namepath++; |
| 211 | } |
| 212 | |
| 213 | /* and there can be any number of ^ */ |
| 214 | while (namepath[0] == '^') { |
| 215 | len += acpigen_emit_byte('^'); |
| 216 | namepath++; |
| 217 | } |
| 218 | |
| 219 | ASSERT(namepath[0] != '\0'); |
| 220 | |
| 221 | i = 0; |
| 222 | while (namepath[i] != '\0') { |
| 223 | if (namepath[i] == '.') { |
| 224 | dotcount++; |
| 225 | dotpos = i; |
| 226 | } |
| 227 | i++; |
| 228 | } |
| 229 | |
| 230 | if (dotcount == 0) { |
| 231 | len += acpigen_emit_simple_namestring(namepath); |
| 232 | } else if (dotcount == 1) { |
| 233 | len += acpigen_emit_double_namestring(namepath, dotpos); |
| 234 | } else { |
| 235 | len += acpigen_emit_multi_namestring(namepath); |
| 236 | } |
| 237 | return len; |
| 238 | } |
| 239 | |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 240 | int acpigen_write_name(char *name) |
| 241 | { |
Rudolf Marek | 3310d75 | 2009-06-21 20:26:13 +0000 | [diff] [blame^] | 242 | int len; |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 243 | /* name op */ |
Rudolf Marek | 3310d75 | 2009-06-21 20:26:13 +0000 | [diff] [blame^] | 244 | len = acpigen_emit_byte(0x8); |
| 245 | return len + acpigen_emit_namestring(name); |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | int acpigen_write_scope(char *name) |
| 249 | { |
| 250 | int len; |
| 251 | /* scope op */ |
Rudolf Marek | 3310d75 | 2009-06-21 20:26:13 +0000 | [diff] [blame^] | 252 | len = acpigen_emit_byte(0x10); |
| 253 | len += acpigen_write_len_f(); |
| 254 | return len + acpigen_emit_namestring(name); |
Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 255 | } |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 256 | |
| 257 | int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len) |
| 258 | { |
| 259 | /* |
| 260 | Processor (\_PR.CPUcpuindex, cpuindex, pblock_addr, pblock_len) |
| 261 | { |
| 262 | */ |
| 263 | char pscope[16]; |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 264 | int len; |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 265 | /* processor op */ |
| 266 | acpigen_emit_byte(0x5b); |
| 267 | acpigen_emit_byte(0x83); |
| 268 | len = acpigen_write_len_f(); |
| 269 | |
Rudolf Marek | 3310d75 | 2009-06-21 20:26:13 +0000 | [diff] [blame^] | 270 | sprintf(pscope, "\\_PR.CPU%x", (unsigned int) cpuindex); |
| 271 | len += acpigen_emit_namestring(pscope); |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 272 | acpigen_emit_byte(cpuindex); |
| 273 | acpigen_emit_byte(pblock_addr & 0xff); |
| 274 | acpigen_emit_byte((pblock_addr >> 8) & 0xff); |
| 275 | acpigen_emit_byte((pblock_addr >> 16) & 0xff); |
| 276 | acpigen_emit_byte((pblock_addr >> 24) & 0xff); |
| 277 | acpigen_emit_byte(pblock_len); |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 278 | return 6 + 2 + len; |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | int acpigen_write_empty_PCT(void) |
| 282 | { |
| 283 | /* |
| 284 | Name (_PCT, Package (0x02) |
| 285 | { |
| 286 | ResourceTemplate () |
| 287 | { |
| 288 | Register (FFixedHW, |
| 289 | 0x00, // Bit Width |
| 290 | 0x00, // Bit Offset |
| 291 | 0x0000000000000000, // Address |
| 292 | ,) |
| 293 | }, |
| 294 | |
| 295 | ResourceTemplate () |
| 296 | { |
| 297 | Register (FFixedHW, |
| 298 | 0x00, // Bit Width |
| 299 | 0x00, // Bit Offset |
| 300 | 0x0000000000000000, // Address |
| 301 | ,) |
| 302 | } |
| 303 | }) |
| 304 | */ |
| 305 | static char stream[] = { |
| 306 | 0x08, 0x5F, 0x50, 0x43, 0x54, 0x12, 0x2C, /* 00000030 "0._PCT.," */ |
| 307 | 0x02, 0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, /* 00000038 "........" */ |
| 308 | 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000040 "........" */ |
| 309 | 0x00, 0x00, 0x00, 0x00, 0x79, 0x00, 0x11, 0x14, /* 00000048 "....y..." */ |
| 310 | 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, 0x00, 0x00, /* 00000050 "........" */ |
| 311 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000058 "........" */ |
| 312 | 0x00, 0x79, 0x00 |
| 313 | }; |
| 314 | return acpigen_emit_stream(stream, ARRAY_SIZE(stream)); |
| 315 | } |
| 316 | |
| 317 | /* generates a func with max supported P states */ |
| 318 | int acpigen_write_PPC(u8 nr) |
| 319 | { |
| 320 | /* |
| 321 | Method (_PPC, 0, NotSerialized) |
| 322 | { |
| 323 | Return (nr) |
| 324 | } |
| 325 | */ |
| 326 | int len; |
| 327 | /* method op */ |
| 328 | acpigen_emit_byte(0x14); |
| 329 | len = acpigen_write_len_f(); |
Rudolf Marek | 3310d75 | 2009-06-21 20:26:13 +0000 | [diff] [blame^] | 330 | len += acpigen_emit_namestring("_PPC"); |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 331 | /* no fnarg */ |
| 332 | acpigen_emit_byte(0x00); |
| 333 | /* return */ |
| 334 | acpigen_emit_byte(0xa4); |
| 335 | /* arg */ |
| 336 | len += acpigen_write_byte(nr); |
Rudolf Marek | 6b2e760 | 2009-03-02 22:45:31 +0000 | [diff] [blame] | 337 | /* add all single bytes */ |
| 338 | len += 3; |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 339 | acpigen_patch_len(len - 1); |
Rudolf Marek | 6b2e760 | 2009-03-02 22:45:31 +0000 | [diff] [blame] | 340 | return len; |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 341 | } |
| 342 | |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 343 | int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, |
| 344 | u32 busmLat, u32 control, u32 status) |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame] | 345 | { |
| 346 | int len; |
| 347 | len = acpigen_write_package(6); |
| 348 | len += acpigen_write_dword(coreFreq); |
| 349 | len += acpigen_write_dword(power); |
| 350 | len += acpigen_write_dword(transLat); |
| 351 | len += acpigen_write_dword(busmLat); |
| 352 | len += acpigen_write_dword(control); |
| 353 | len += acpigen_write_dword(status); |
| 354 | //pkglen without the len opcode |
| 355 | acpigen_patch_len(len - 1); |
| 356 | return len; |
| 357 | } |
Patrick Georgi | df444bf | 2009-04-21 20:34:36 +0000 | [diff] [blame] | 358 | |
| 359 | int acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype) |
| 360 | { |
| 361 | int len, lenh, lenp; |
| 362 | lenh = acpigen_write_name("_PSD"); |
| 363 | lenp = acpigen_write_package(1); |
| 364 | len = acpigen_write_package(5); |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 365 | len += acpigen_write_byte(5); // 5 values |
| 366 | len += acpigen_write_byte(0); // revision 0 |
Patrick Georgi | df444bf | 2009-04-21 20:34:36 +0000 | [diff] [blame] | 367 | len += acpigen_write_dword(domain); |
| 368 | len += acpigen_write_dword(coordtype); |
| 369 | len += acpigen_write_dword(numprocs); |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 370 | acpigen_patch_len(len - 1); |
Patrick Georgi | df444bf | 2009-04-21 20:34:36 +0000 | [diff] [blame] | 371 | len += lenp; |
Stefan Reinauer | f96c2d9 | 2009-04-22 16:23:47 +0000 | [diff] [blame] | 372 | acpigen_patch_len(len - 1); |
Patrick Georgi | df444bf | 2009-04-21 20:34:36 +0000 | [diff] [blame] | 373 | return len + lenh; |
| 374 | } |