1 /* 2 * (C) Copyright 2000-2002 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. 6 * 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #include <common.h> 27 #include <mpc83xx.h> 28 #include <command.h> 29 #include <asm/processor.h> 30 31 DECLARE_GLOBAL_DATA_PTR; 32 33 /* ----------------------------------------------------------------- */ 34 35 typedef enum { 36 _unk, 37 _off, 38 _byp, 39 _x8, 40 _x4, 41 _x2, 42 _x1, 43 _1x, 44 _1_5x, 45 _2x, 46 _2_5x, 47 _3x 48 } mult_t; 49 50 typedef struct { 51 mult_t core_csb_ratio; 52 mult_t vco_divider; 53 } corecnf_t; 54 55 corecnf_t corecnf_tab[] = { 56 {_byp, _byp}, /* 0x00 */ 57 {_byp, _byp}, /* 0x01 */ 58 {_byp, _byp}, /* 0x02 */ 59 {_byp, _byp}, /* 0x03 */ 60 {_byp, _byp}, /* 0x04 */ 61 {_byp, _byp}, /* 0x05 */ 62 {_byp, _byp}, /* 0x06 */ 63 {_byp, _byp}, /* 0x07 */ 64 {_1x, _x2}, /* 0x08 */ 65 {_1x, _x4}, /* 0x09 */ 66 {_1x, _x8}, /* 0x0A */ 67 {_1x, _x8}, /* 0x0B */ 68 {_1_5x, _x2}, /* 0x0C */ 69 {_1_5x, _x4}, /* 0x0D */ 70 {_1_5x, _x8}, /* 0x0E */ 71 {_1_5x, _x8}, /* 0x0F */ 72 {_2x, _x2}, /* 0x10 */ 73 {_2x, _x4}, /* 0x11 */ 74 {_2x, _x8}, /* 0x12 */ 75 {_2x, _x8}, /* 0x13 */ 76 {_2_5x, _x2}, /* 0x14 */ 77 {_2_5x, _x4}, /* 0x15 */ 78 {_2_5x, _x8}, /* 0x16 */ 79 {_2_5x, _x8}, /* 0x17 */ 80 {_3x, _x2}, /* 0x18 */ 81 {_3x, _x4}, /* 0x19 */ 82 {_3x, _x8}, /* 0x1A */ 83 {_3x, _x8}, /* 0x1B */ 84 }; 85 86 /* ----------------------------------------------------------------- */ 87 88 /* 89 * 90 */ 91 int get_clocks(void) 92 { 93 volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR; 94 u32 pci_sync_in; 95 u8 spmf; 96 u8 clkin_div; 97 u32 sccr; 98 u32 corecnf_tab_index; 99 u8 corepll; 100 u32 lcrr; 101 102 u32 csb_clk; 103 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x) 104 u32 tsec1_clk; 105 u32 tsec2_clk; 106 u32 usbdr_clk; 107 #endif 108 #ifdef CONFIG_MPC834x 109 u32 usbmph_clk; 110 #endif 111 u32 core_clk; 112 u32 i2c1_clk; 113 #if !defined(CONFIG_MPC832x) 114 u32 i2c2_clk; 115 #endif 116 #if defined(CONFIG_MPC8315) 117 u32 tdm_clk; 118 #endif 119 #if defined(CONFIG_MPC837x) 120 u32 sdhc_clk; 121 #endif 122 u32 enc_clk; 123 u32 lbiu_clk; 124 u32 lclk_clk; 125 u32 mem_clk; 126 #if defined(CONFIG_MPC8360) 127 u32 mem_sec_clk; 128 #endif 129 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x) 130 u32 qepmf; 131 u32 qepdf; 132 u32 qe_clk; 133 u32 brg_clk; 134 #endif 135 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC831x) 136 u32 pciexp1_clk; 137 u32 pciexp2_clk; 138 #endif 139 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315) 140 u32 sata_clk; 141 #endif 142 143 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im) 144 return -1; 145 146 clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT); 147 148 if (im->reset.rcwh & HRCWH_PCI_HOST) { 149 #if defined(CONFIG_83XX_CLKIN) 150 pci_sync_in = CONFIG_83XX_CLKIN / (1 + clkin_div); 151 #else 152 pci_sync_in = 0xDEADBEEF; 153 #endif 154 } else { 155 #if defined(CONFIG_83XX_PCICLK) 156 pci_sync_in = CONFIG_83XX_PCICLK; 157 #else 158 pci_sync_in = 0xDEADBEEF; 159 #endif 160 } 161 162 spmf = ((im->reset.rcwl & HRCWL_SPMF) >> HRCWL_SPMF_SHIFT); 163 csb_clk = pci_sync_in * (1 + clkin_div) * spmf; 164 165 sccr = im->clk.sccr; 166 167 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x) 168 switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) { 169 case 0: 170 tsec1_clk = 0; 171 break; 172 case 1: 173 tsec1_clk = csb_clk; 174 break; 175 case 2: 176 tsec1_clk = csb_clk / 2; 177 break; 178 case 3: 179 tsec1_clk = csb_clk / 3; 180 break; 181 default: 182 /* unkown SCCR_TSEC1CM value */ 183 return -2; 184 } 185 186 switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) { 187 case 0: 188 usbdr_clk = 0; 189 break; 190 case 1: 191 usbdr_clk = csb_clk; 192 break; 193 case 2: 194 usbdr_clk = csb_clk / 2; 195 break; 196 case 3: 197 usbdr_clk = csb_clk / 3; 198 break; 199 default: 200 /* unkown SCCR_USBDRCM value */ 201 return -3; 202 } 203 #endif 204 205 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315) 206 switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) { 207 case 0: 208 tsec2_clk = 0; 209 break; 210 case 1: 211 tsec2_clk = csb_clk; 212 break; 213 case 2: 214 tsec2_clk = csb_clk / 2; 215 break; 216 case 3: 217 tsec2_clk = csb_clk / 3; 218 break; 219 default: 220 /* unkown SCCR_TSEC2CM value */ 221 return -4; 222 } 223 #elif defined(CONFIG_MPC8313) 224 tsec2_clk = tsec1_clk; 225 226 if (!(sccr & SCCR_TSEC1ON)) 227 tsec1_clk = 0; 228 if (!(sccr & SCCR_TSEC2ON)) 229 tsec2_clk = 0; 230 #endif 231 232 #if defined(CONFIG_MPC834x) 233 switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) { 234 case 0: 235 usbmph_clk = 0; 236 break; 237 case 1: 238 usbmph_clk = csb_clk; 239 break; 240 case 2: 241 usbmph_clk = csb_clk / 2; 242 break; 243 case 3: 244 usbmph_clk = csb_clk / 3; 245 break; 246 default: 247 /* unkown SCCR_USBMPHCM value */ 248 return -5; 249 } 250 251 if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk) { 252 /* if USB MPH clock is not disabled and 253 * USB DR clock is not disabled then 254 * USB MPH & USB DR must have the same rate 255 */ 256 return -6; 257 } 258 #endif 259 switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) { 260 case 0: 261 enc_clk = 0; 262 break; 263 case 1: 264 enc_clk = csb_clk; 265 break; 266 case 2: 267 enc_clk = csb_clk / 2; 268 break; 269 case 3: 270 enc_clk = csb_clk / 3; 271 break; 272 default: 273 /* unkown SCCR_ENCCM value */ 274 return -7; 275 } 276 277 #if defined(CONFIG_MPC837x) 278 switch ((sccr & SCCR_SDHCCM) >> SCCR_SDHCCM_SHIFT) { 279 case 0: 280 sdhc_clk = 0; 281 break; 282 case 1: 283 sdhc_clk = csb_clk; 284 break; 285 case 2: 286 sdhc_clk = csb_clk / 2; 287 break; 288 case 3: 289 sdhc_clk = csb_clk / 3; 290 break; 291 default: 292 /* unkown SCCR_SDHCCM value */ 293 return -8; 294 } 295 #endif 296 #if defined(CONFIG_MPC8315) 297 switch ((sccr & SCCR_TDMCM) >> SCCR_TDMCM_SHIFT) { 298 case 0: 299 tdm_clk = 0; 300 break; 301 case 1: 302 tdm_clk = csb_clk; 303 break; 304 case 2: 305 tdm_clk = csb_clk / 2; 306 break; 307 case 3: 308 tdm_clk = csb_clk / 3; 309 break; 310 default: 311 /* unkown SCCR_TDMCM value */ 312 return -8; 313 } 314 #endif 315 316 #if defined(CONFIG_MPC834x) 317 i2c1_clk = tsec2_clk; 318 #elif defined(CONFIG_MPC8360) 319 i2c1_clk = csb_clk; 320 #elif defined(CONFIG_MPC832x) 321 i2c1_clk = enc_clk; 322 #elif defined(CONFIG_MPC831x) 323 i2c1_clk = enc_clk; 324 #elif defined(CONFIG_MPC837x) 325 i2c1_clk = sdhc_clk; 326 #endif 327 #if !defined(CONFIG_MPC832x) 328 i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */ 329 #endif 330 331 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC831x) 332 switch ((sccr & SCCR_PCIEXP1CM) >> SCCR_PCIEXP1CM_SHIFT) { 333 case 0: 334 pciexp1_clk = 0; 335 break; 336 case 1: 337 pciexp1_clk = csb_clk; 338 break; 339 case 2: 340 pciexp1_clk = csb_clk / 2; 341 break; 342 case 3: 343 pciexp1_clk = csb_clk / 3; 344 break; 345 default: 346 /* unkown SCCR_PCIEXP1CM value */ 347 return -9; 348 } 349 350 switch ((sccr & SCCR_PCIEXP2CM) >> SCCR_PCIEXP2CM_SHIFT) { 351 case 0: 352 pciexp2_clk = 0; 353 break; 354 case 1: 355 pciexp2_clk = csb_clk; 356 break; 357 case 2: 358 pciexp2_clk = csb_clk / 2; 359 break; 360 case 3: 361 pciexp2_clk = csb_clk / 3; 362 break; 363 default: 364 /* unkown SCCR_PCIEXP2CM value */ 365 return -10; 366 } 367 #endif 368 369 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315) 370 switch ((sccr & SCCR_SATA1CM) >> SCCR_SATA1CM_SHIFT) { 371 case 0: 372 sata_clk = 0; 373 break; 374 case 1: 375 sata_clk = csb_clk; 376 break; 377 case 2: 378 sata_clk = csb_clk / 2; 379 break; 380 case 3: 381 sata_clk = csb_clk / 3; 382 break; 383 default: 384 /* unkown SCCR_SATACM value */ 385 return -11; 386 } 387 #endif 388 389 lbiu_clk = csb_clk * 390 (1 + ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT)); 391 lcrr = (im->lbus.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT; 392 switch (lcrr) { 393 case 2: 394 case 4: 395 case 8: 396 lclk_clk = lbiu_clk / lcrr; 397 break; 398 default: 399 /* unknown lcrr */ 400 return -12; 401 } 402 403 mem_clk = csb_clk * 404 (1 + ((im->reset.rcwl & HRCWL_DDRCM) >> HRCWL_DDRCM_SHIFT)); 405 corepll = (im->reset.rcwl & HRCWL_COREPLL) >> HRCWL_COREPLL_SHIFT; 406 #if defined(CONFIG_MPC8360) 407 mem_sec_clk = csb_clk * (1 + 408 ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT)); 409 #endif 410 411 corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5); 412 if (corecnf_tab_index > (sizeof(corecnf_tab) / sizeof(corecnf_t))) { 413 /* corecnf_tab_index is too high, possibly worng value */ 414 return -11; 415 } 416 switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) { 417 case _byp: 418 case _x1: 419 case _1x: 420 core_clk = csb_clk; 421 break; 422 case _1_5x: 423 core_clk = (3 * csb_clk) / 2; 424 break; 425 case _2x: 426 core_clk = 2 * csb_clk; 427 break; 428 case _2_5x: 429 core_clk = (5 * csb_clk) / 2; 430 break; 431 case _3x: 432 core_clk = 3 * csb_clk; 433 break; 434 default: 435 /* unkown core to csb ratio */ 436 return -13; 437 } 438 439 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x) 440 qepmf = (im->reset.rcwl & HRCWL_CEPMF) >> HRCWL_CEPMF_SHIFT; 441 qepdf = (im->reset.rcwl & HRCWL_CEPDF) >> HRCWL_CEPDF_SHIFT; 442 qe_clk = (pci_sync_in * qepmf) / (1 + qepdf); 443 brg_clk = qe_clk / 2; 444 #endif 445 446 gd->csb_clk = csb_clk; 447 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x) 448 gd->tsec1_clk = tsec1_clk; 449 gd->tsec2_clk = tsec2_clk; 450 gd->usbdr_clk = usbdr_clk; 451 #endif 452 #if defined(CONFIG_MPC834x) 453 gd->usbmph_clk = usbmph_clk; 454 #endif 455 #if defined(CONFIG_MPC8315) 456 gd->tdm_clk = tdm_clk; 457 #endif 458 #if defined(CONFIG_MPC837x) 459 gd->sdhc_clk = sdhc_clk; 460 #endif 461 gd->core_clk = core_clk; 462 gd->i2c1_clk = i2c1_clk; 463 #if !defined(CONFIG_MPC832x) 464 gd->i2c2_clk = i2c2_clk; 465 #endif 466 gd->enc_clk = enc_clk; 467 gd->lbiu_clk = lbiu_clk; 468 gd->lclk_clk = lclk_clk; 469 gd->mem_clk = mem_clk; 470 #if defined(CONFIG_MPC8360) 471 gd->mem_sec_clk = mem_sec_clk; 472 #endif 473 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x) 474 gd->qe_clk = qe_clk; 475 gd->brg_clk = brg_clk; 476 #endif 477 #if defined(CONFIG_MPC837x) 478 gd->pciexp1_clk = pciexp1_clk; 479 gd->pciexp2_clk = pciexp2_clk; 480 #endif 481 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315) 482 gd->sata_clk = sata_clk; 483 #endif 484 gd->pci_clk = pci_sync_in; 485 gd->cpu_clk = gd->core_clk; 486 gd->bus_clk = gd->csb_clk; 487 return 0; 488 489 } 490 491 /******************************************** 492 * get_bus_freq 493 * return system bus freq in Hz 494 *********************************************/ 495 ulong get_bus_freq(ulong dummy) 496 { 497 return gd->csb_clk; 498 } 499 500 int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 501 { 502 char buf[32]; 503 504 printf("Clock configuration:\n"); 505 printf(" Core: %-4s MHz\n", strmhz(buf, gd->core_clk)); 506 printf(" Coherent System Bus: %-4s MHz\n", strmhz(buf, gd->csb_clk)); 507 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x) 508 printf(" QE: %-4s MHz\n", strmhz(buf, gd->qe_clk)); 509 printf(" BRG: %-4s MHz\n", strmhz(buf, gd->brg_clk)); 510 #endif 511 printf(" Local Bus Controller:%-4s MHz\n", strmhz(buf, gd->lbiu_clk)); 512 printf(" Local Bus: %-4s MHz\n", strmhz(buf, gd->lclk_clk)); 513 printf(" DDR: %-4s MHz\n", strmhz(buf, gd->mem_clk)); 514 #if defined(CONFIG_MPC8360) 515 printf(" DDR Secondary: %-4s MHz\n", strmhz(buf, gd->mem_sec_clk)); 516 #endif 517 printf(" SEC: %-4s MHz\n", strmhz(buf, gd->enc_clk)); 518 printf(" I2C1: %-4s MHz\n", strmhz(buf, gd->i2c1_clk)); 519 #if !defined(CONFIG_MPC832x) 520 printf(" I2C2: %-4s MHz\n", strmhz(buf, gd->i2c2_clk)); 521 #endif 522 #if defined(CONFIG_MPC8315) 523 printf(" TDM: %-4s MHz\n", strmhz(buf, gd->tdm_clk)); 524 #endif 525 #if defined(CONFIG_MPC837x) 526 printf(" SDHC: %-4s MHz\n", strmhz(buf, gd->sdhc_clk)); 527 #endif 528 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x) 529 printf(" TSEC1: %-4s MHz\n", strmhz(buf, gd->tsec1_clk)); 530 printf(" TSEC2: %-4s MHz\n", strmhz(buf, gd->tsec2_clk)); 531 printf(" USB DR: %-4s MHz\n", strmhz(buf, gd->usbdr_clk)); 532 #endif 533 #if defined(CONFIG_MPC834x) 534 printf(" USB MPH: %-4s MHz\n", strmhz(buf, gd->usbmph_clk)); 535 #endif 536 #if defined(CONFIG_MPC837x) 537 printf(" PCIEXP1: %-4s MHz\n", strmhz(buf, gd->pciexp1_clk)); 538 printf(" PCIEXP2: %-4s MHz\n", strmhz(buf, gd->pciexp2_clk)); 539 #endif 540 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315) 541 printf(" SATA: %-4s MHz\n", strmhz(buf, gd->sata_clk)); 542 #endif 543 return 0; 544 } 545 546 U_BOOT_CMD(clocks, 1, 0, do_clocks, 547 "print clock configuration", 548 " clocks" 549 ); 550