arch/arm/mach-omap2/io.c

   1 /*
   2  * linux/arch/arm/mach-omap2/io.c
   3  *
   4  * OMAP2 I/O mapping code
   5  *
   6  * Copyright (C) 2005 Nokia Corporation
   7  * Copyright (C) 2007-2009 Texas Instruments
   8  *
   9  * Author:
  10  *      Juha Yrjola <[email protected]>
  11  *      Syed Khasim <[email protected]>
  12  *
  13  * Added OMAP4 support - Santosh Shilimkar <[email protected]>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License version 2 as
  17  * published by the Free Software Foundation.
  18  */
  19 #include <linux/module.h>
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/io.h>
  23 #include <linux/clk.h>
  24
  25 #include <asm/tlb.h>
  26 #include <asm/mach/map.h>
  27
  28 #include <plat/serial.h>
  29 #include <plat/omap-pm.h>
  30 #include <plat/omap_hwmod.h>
  31 #include <plat/multi.h>
  32 #include <plat-omap/dma-omap.h>
  33
  34 #include "../plat-omap/sram.h"
  35
  36 #include "soc.h"
  37 #include "iomap.h"
  38 #include "voltage.h"
  39 #include "powerdomain.h"
  40 #include "clockdomain.h"
  41 #include "common.h"
  42 #include "clock.h"
  43 #include "clock2xxx.h"
  44 #include "clock3xxx.h"
  45 #include "clock44xx.h"
  46 #include "sdrc.h"
  47
  48 /*
  49  * The machine specific code may provide the extra mapping besides the
  50  * default mapping provided here.
  51  */
  52
  53 #if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430)
  54 static struct map_desc omap24xx_io_desc[] __initdata = {
  55         {
  56                 .virtual        = L3_24XX_VIRT,
  57                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  58                 .length         = L3_24XX_SIZE,
  59                 .type           = MT_DEVICE
  60         },
  61         {
  62                 .virtual        = L4_24XX_VIRT,
  63                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  64                 .length         = L4_24XX_SIZE,
  65                 .type           = MT_DEVICE
  66         },
  67 };
  68
  69 #ifdef CONFIG_SOC_OMAP2420
  70 static struct map_desc omap242x_io_desc[] __initdata = {
  71         {
  72                 .virtual        = DSP_MEM_2420_VIRT,
  73                 .pfn            = __phys_to_pfn(DSP_MEM_2420_PHYS),
  74                 .length         = DSP_MEM_2420_SIZE,
  75                 .type           = MT_DEVICE
  76         },
  77         {
  78                 .virtual        = DSP_IPI_2420_VIRT,
  79                 .pfn            = __phys_to_pfn(DSP_IPI_2420_PHYS),
  80                 .length         = DSP_IPI_2420_SIZE,
  81                 .type           = MT_DEVICE
  82         },
  83         {
  84                 .virtual        = DSP_MMU_2420_VIRT,
  85                 .pfn            = __phys_to_pfn(DSP_MMU_2420_PHYS),
  86                 .length         = DSP_MMU_2420_SIZE,
  87                 .type           = MT_DEVICE
  88         },
  89 };
  90
  91 #endif
  92
  93 #ifdef CONFIG_SOC_OMAP2430
  94 static struct map_desc omap243x_io_desc[] __initdata = {
  95         {
  96                 .virtual        = L4_WK_243X_VIRT,
  97                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  98                 .length         = L4_WK_243X_SIZE,
  99                 .type           = MT_DEVICE
 100         },
 101         {
 102                 .virtual        = OMAP243X_GPMC_VIRT,
 103                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
 104                 .length         = OMAP243X_GPMC_SIZE,
 105                 .type           = MT_DEVICE
 106         },
 107         {
 108                 .virtual        = OMAP243X_SDRC_VIRT,
 109                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
 110                 .length         = OMAP243X_SDRC_SIZE,
 111                 .type           = MT_DEVICE
 112         },
 113         {
 114                 .virtual        = OMAP243X_SMS_VIRT,
 115                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
 116                 .length         = OMAP243X_SMS_SIZE,
 117                 .type           = MT_DEVICE
 118         },
 119 };
 120 #endif
 121 #endif
 122
 123 #ifdef  CONFIG_ARCH_OMAP3
 124 static struct map_desc omap34xx_io_desc[] __initdata = {
 125         {
 126                 .virtual        = L3_34XX_VIRT,
 127                 .pfn            = __phys_to_pfn(L3_34XX_PHYS),
 128                 .length         = L3_34XX_SIZE,
 129                 .type           = MT_DEVICE
 130         },
 131         {
 132                 .virtual        = L4_34XX_VIRT,
 133                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 134                 .length         = L4_34XX_SIZE,
 135                 .type           = MT_DEVICE
 136         },
 137         {
 138                 .virtual        = OMAP34XX_GPMC_VIRT,
 139                 .pfn            = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
 140                 .length         = OMAP34XX_GPMC_SIZE,
 141                 .type           = MT_DEVICE
 142         },
 143         {
 144                 .virtual        = OMAP343X_SMS_VIRT,
 145                 .pfn            = __phys_to_pfn(OMAP343X_SMS_PHYS),
 146                 .length         = OMAP343X_SMS_SIZE,
 147                 .type           = MT_DEVICE
 148         },
 149         {
 150                 .virtual        = OMAP343X_SDRC_VIRT,
 151                 .pfn            = __phys_to_pfn(OMAP343X_SDRC_PHYS),
 152                 .length         = OMAP343X_SDRC_SIZE,
 153                 .type           = MT_DEVICE
 154         },
 155         {
 156                 .virtual        = L4_PER_34XX_VIRT,
 157                 .pfn            = __phys_to_pfn(L4_PER_34XX_PHYS),
 158                 .length         = L4_PER_34XX_SIZE,
 159                 .type           = MT_DEVICE
 160         },
 161         {
 162                 .virtual        = L4_EMU_34XX_VIRT,
 163                 .pfn            = __phys_to_pfn(L4_EMU_34XX_PHYS),
 164                 .length         = L4_EMU_34XX_SIZE,
 165                 .type           = MT_DEVICE
 166         },
 167 #if defined(CONFIG_DEBUG_LL) &&                                                 \
 168         (defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
 169         {
 170                 .virtual        = ZOOM_UART_VIRT,
 171                 .pfn            = __phys_to_pfn(ZOOM_UART_BASE),
 172                 .length         = SZ_1M,
 173                 .type           = MT_DEVICE
 174         },
 175 #endif
 176 };
 177 #endif
 178
 179 #ifdef CONFIG_SOC_TI81XX
 180 static struct map_desc omapti81xx_io_desc[] __initdata = {
 181         {
 182                 .virtual        = L4_34XX_VIRT,
 183                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 184                 .length         = L4_34XX_SIZE,
 185                 .type           = MT_DEVICE
 186         }
 187 };
 188 #endif
 189
 190 #ifdef CONFIG_SOC_AM33XX
 191 static struct map_desc omapam33xx_io_desc[] __initdata = {
 192         {
 193                 .virtual        = L4_34XX_VIRT,
 194                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 195                 .length         = L4_34XX_SIZE,
 196                 .type           = MT_DEVICE
 197         },
 198         {
 199                 .virtual        = L4_WK_AM33XX_VIRT,
 200                 .pfn            = __phys_to_pfn(L4_WK_AM33XX_PHYS),
 201                 .length         = L4_WK_AM33XX_SIZE,
 202                 .type           = MT_DEVICE
 203         }
 204 };
 205 #endif
 206
 207 #ifdef  CONFIG_ARCH_OMAP4
 208 static struct map_desc omap44xx_io_desc[] __initdata = {
 209         {
 210                 .virtual        = L3_44XX_VIRT,
 211                 .pfn            = __phys_to_pfn(L3_44XX_PHYS),
 212                 .length         = L3_44XX_SIZE,
 213                 .type           = MT_DEVICE,
 214         },
 215         {
 216                 .virtual        = L4_44XX_VIRT,
 217                 .pfn            = __phys_to_pfn(L4_44XX_PHYS),
 218                 .length         = L4_44XX_SIZE,
 219                 .type           = MT_DEVICE,
 220         },
 221         {
 222                 .virtual        = L4_PER_44XX_VIRT,
 223                 .pfn            = __phys_to_pfn(L4_PER_44XX_PHYS),
 224                 .length         = L4_PER_44XX_SIZE,
 225                 .type           = MT_DEVICE,
 226         },
 227 #ifdef CONFIG_OMAP4_ERRATA_I688
 228         {
 229                 .virtual        = OMAP4_SRAM_VA,
 230                 .pfn            = __phys_to_pfn(OMAP4_SRAM_PA),
 231                 .length         = PAGE_SIZE,
 232                 .type           = MT_MEMORY_SO,
 233         },
 234 #endif
 235
 236 };
 237 #endif
 238
 239 #ifdef  CONFIG_SOC_OMAP5
 240 static struct map_desc omap54xx_io_desc[] __initdata = {
 241         {
 242                 .virtual        = L3_54XX_VIRT,
 243                 .pfn            = __phys_to_pfn(L3_54XX_PHYS),
 244                 .length         = L3_54XX_SIZE,
 245                 .type           = MT_DEVICE,
 246         },
 247         {
 248                 .virtual        = L4_54XX_VIRT,
 249                 .pfn            = __phys_to_pfn(L4_54XX_PHYS),
 250                 .length         = L4_54XX_SIZE,
 251                 .type           = MT_DEVICE,
 252         },
 253         {
 254                 .virtual        = L4_WK_54XX_VIRT,
 255                 .pfn            = __phys_to_pfn(L4_WK_54XX_PHYS),
 256                 .length         = L4_WK_54XX_SIZE,
 257                 .type           = MT_DEVICE,
 258         },
 259         {
 260                 .virtual        = L4_PER_54XX_VIRT,
 261                 .pfn            = __phys_to_pfn(L4_PER_54XX_PHYS),
 262                 .length         = L4_PER_54XX_SIZE,
 263                 .type           = MT_DEVICE,
 264         },
 265 };
 266 #endif
 267
 268 #ifdef CONFIG_SOC_OMAP2420
 269 void __init omap242x_map_common_io(void)
 270 {
 271         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 272         iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
 273 }
 274 #endif
 275
 276 #ifdef CONFIG_SOC_OMAP2430
 277 void __init omap243x_map_common_io(void)
 278 {
 279         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 280         iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
 281 }
 282 #endif
 283
 284 #ifdef CONFIG_ARCH_OMAP3
 285 void __init omap34xx_map_common_io(void)
 286 {
 287         iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
 288 }
 289 #endif
 290
 291 #ifdef CONFIG_SOC_TI81XX
 292 void __init omapti81xx_map_common_io(void)
 293 {
 294         iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc));
 295 }
 296 #endif
 297
 298 #ifdef CONFIG_SOC_AM33XX
 299 void __init omapam33xx_map_common_io(void)
 300 {
 301         iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc));
 302 }
 303 #endif
 304
 305 #ifdef CONFIG_ARCH_OMAP4
 306 void __init omap44xx_map_common_io(void)
 307 {
 308         iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
 309         omap_barriers_init();
 310 }
 311 #endif
 312
 313 #ifdef CONFIG_SOC_OMAP5
 314 void __init omap5_map_common_io(void)
 315 {
 316         iotable_init(omap54xx_io_desc, ARRAY_SIZE(omap54xx_io_desc));
 317 }
 318 #endif
 319 /*
 320  * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
 321  *
 322  * Sets the CORE DPLL3 M2 divider to the same value that it's at
 323  * currently.  This has the effect of setting the SDRC SDRAM AC timing
 324  * registers to the values currently defined by the kernel.  Currently
 325  * only defined for OMAP3; will return 0 if called on OMAP2.  Returns
 326  * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
 327  * or passes along the return value of clk_set_rate().
 328  */
 329 static int __init _omap2_init_reprogram_sdrc(void)
 330 {
 331         struct clk *dpll3_m2_ck;
 332         int v = -EINVAL;
 333         long rate;
 334
 335         if (!cpu_is_omap34xx())
 336                 return 0;
 337
 338         dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck");
 339         if (IS_ERR(dpll3_m2_ck))
 340                 return -EINVAL;
 341
 342         rate = clk_get_rate(dpll3_m2_ck);
 343         pr_info("Reprogramming SDRC clock to %ld Hz\n", rate);
 344         v = clk_set_rate(dpll3_m2_ck, rate);
 345         if (v)
 346                 pr_err("dpll3_m2_clk rate change failed: %d\n", v);
 347
 348         clk_put(dpll3_m2_ck);
 349
 350         return v;
 351 }
 352
 353 static int _set_hwmod_postsetup_state(struct omap_hwmod *oh, void *data)
 354 {
 355         return omap_hwmod_set_postsetup_state(oh, *(u8 *)data);
 356 }
 357
 358 static void __init omap_common_init_early(void)
 359 {
 360         omap_init_consistent_dma_size();
 361 }
 362
 363 static void __init omap_hwmod_init_postsetup(void)
 364 {
 365         u8 postsetup_state;
 366
 367         /* Set the default postsetup state for all hwmods */
 368 #ifdef CONFIG_PM_RUNTIME
 369         postsetup_state = _HWMOD_STATE_IDLE;
 370 #else
 371         postsetup_state = _HWMOD_STATE_ENABLED;
 372 #endif
 373         omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state);
 374
 375         omap_pm_if_early_init();
 376 }
 377
 378 #ifdef CONFIG_SOC_OMAP2420
 379 void __init omap2420_init_early(void)
 380 {
 381         omap2_set_globals_242x();
 382         omap2xxx_check_revision();
 383         omap_common_init_early();
 384         omap2xxx_voltagedomains_init();
 385         omap242x_powerdomains_init();
 386         omap242x_clockdomains_init();
 387         omap2420_hwmod_init();
 388         omap_hwmod_init_postsetup();
 389         omap2420_clk_init();
 390 }
 391
 392 void __init omap2420_init_late(void)
 393 {
 394         omap_mux_late_init();
 395         omap2_common_pm_late_init();
 396         omap2_pm_init();
 397 }
 398 #endif
 399
 400 #ifdef CONFIG_SOC_OMAP2430
 401 void __init omap2430_init_early(void)
 402 {
 403         omap2_set_globals_243x();
 404         omap2xxx_check_revision();
 405         omap_common_init_early();
 406         omap2xxx_voltagedomains_init();
 407         omap243x_powerdomains_init();
 408         omap243x_clockdomains_init();
 409         omap2430_hwmod_init();
 410         omap_hwmod_init_postsetup();
 411         omap2430_clk_init();
 412 }
 413
 414 void __init omap2430_init_late(void)
 415 {
 416         omap_mux_late_init();
 417         omap2_common_pm_late_init();
 418         omap2_pm_init();
 419 }
 420 #endif
 421
 422 /*
 423  * Currently only board-omap3beagle.c should call this because of the
 424  * same machine_id for 34xx and 36xx beagle.. Will get fixed with DT.
 425  */
 426 #ifdef CONFIG_ARCH_OMAP3
 427 void __init omap3_init_early(void)
 428 {
 429         omap2_set_globals_3xxx();
 430         omap3xxx_check_revision();
 431         omap3xxx_check_features();
 432         omap_common_init_early();
 433         omap3xxx_voltagedomains_init();
 434         omap3xxx_powerdomains_init();
 435         omap3xxx_clockdomains_init();
 436         omap3xxx_hwmod_init();
 437         omap_hwmod_init_postsetup();
 438         omap3xxx_clk_init();
 439 }
 440
 441 void __init omap3430_init_early(void)
 442 {
 443         omap3_init_early();
 444 }
 445
 446 void __init omap35xx_init_early(void)
 447 {
 448         omap3_init_early();
 449 }
 450
 451 void __init omap3630_init_early(void)
 452 {
 453         omap3_init_early();
 454 }
 455
 456 void __init am35xx_init_early(void)
 457 {
 458         omap3_init_early();
 459 }
 460
 461 void __init ti81xx_init_early(void)
 462 {
 463         omap2_set_globals_ti81xx();
 464         omap3xxx_check_revision();
 465         ti81xx_check_features();
 466         omap_common_init_early();
 467         omap3xxx_voltagedomains_init();
 468         omap3xxx_powerdomains_init();
 469         omap3xxx_clockdomains_init();
 470         omap3xxx_hwmod_init();
 471         omap_hwmod_init_postsetup();
 472         omap3xxx_clk_init();
 473 }
 474
 475 void __init omap3_init_late(void)
 476 {
 477         omap_mux_late_init();
 478         omap2_common_pm_late_init();
 479         omap3_pm_init();
 480 }
 481
 482 void __init omap3430_init_late(void)
 483 {
 484         omap_mux_late_init();
 485         omap2_common_pm_late_init();
 486         omap3_pm_init();
 487 }
 488
 489 void __init omap35xx_init_late(void)
 490 {
 491         omap_mux_late_init();
 492         omap2_common_pm_late_init();
 493         omap3_pm_init();
 494 }
 495
 496 void __init omap3630_init_late(void)
 497 {
 498         omap_mux_late_init();
 499         omap2_common_pm_late_init();
 500         omap3_pm_init();
 501 }
 502
 503 void __init am35xx_init_late(void)
 504 {
 505         omap_mux_late_init();
 506         omap2_common_pm_late_init();
 507         omap3_pm_init();
 508 }
 509
 510 void __init ti81xx_init_late(void)
 511 {
 512         omap_mux_late_init();
 513         omap2_common_pm_late_init();
 514         omap3_pm_init();
 515 }
 516 #endif
 517
 518 #ifdef CONFIG_SOC_AM33XX
 519 void __init am33xx_init_early(void)
 520 {
 521         omap2_set_globals_am33xx();
 522         omap3xxx_check_revision();
 523         ti81xx_check_features();
 524         omap_common_init_early();
 525         am33xx_voltagedomains_init();
 526         am33xx_powerdomains_init();
 527         am33xx_clockdomains_init();
 528         am33xx_hwmod_init();
 529         omap_hwmod_init_postsetup();
 530         am33xx_clk_init();
 531 }
 532 #endif
 533
 534 #ifdef CONFIG_ARCH_OMAP4
 535 void __init omap4430_init_early(void)
 536 {
 537         omap2_set_globals_443x();
 538         omap4xxx_check_revision();
 539         omap4xxx_check_features();
 540         omap_common_init_early();
 541         omap44xx_voltagedomains_init();
 542         omap44xx_powerdomains_init();
 543         omap44xx_clockdomains_init();
 544         omap44xx_hwmod_init();
 545         omap_hwmod_init_postsetup();
 546         omap4xxx_clk_init();
 547 }
 548
 549 void __init omap4430_init_late(void)
 550 {
 551         omap_mux_late_init();
 552         omap2_common_pm_late_init();
 553         omap4_pm_init();
 554 }
 555 #endif
 556
 557 #ifdef CONFIG_SOC_OMAP5
 558 void __init omap5_init_early(void)
 559 {
 560         omap2_set_globals_5xxx();
 561         omap5xxx_check_revision();
 562         omap_common_init_early();
 563 }
 564 #endif
 565
 566 void __init omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0,
 567                                       struct omap_sdrc_params *sdrc_cs1)
 568 {
 569         omap_sram_init();
 570
 571         if (cpu_is_omap24xx() || omap3_has_sdrc()) {
 572                 omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
 573                 _omap2_init_reprogram_sdrc();
 574         }
 575 }