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 <juha.yrjola@nokia.com>
  11  *      Syed Khasim <x0khasim@ti.com>
  12  *
  13  * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
  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/sram.h>
  29 #include <plat/sdrc.h>
  30 #include <plat/serial.h>
  31 #include <plat/omap-pm.h>
  32 #include <plat/omap_hwmod.h>
  33 #include <plat/multi.h>
  34 #include <plat/dma.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
  47 /*
  48  * The machine specific code may provide the extra mapping besides the
  49  * default mapping provided here.
  50  */
  51
  52 #if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430)
  53 static struct map_desc omap24xx_io_desc[] __initdata = {
  54         {
  55                 .virtual        = L3_24XX_VIRT,
  56                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  57                 .length         = L3_24XX_SIZE,
  58                 .type           = MT_DEVICE
  59         },
  60         {
  61                 .virtual        = L4_24XX_VIRT,
  62                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  63                 .length         = L4_24XX_SIZE,
  64                 .type           = MT_DEVICE
  65         },
  66 };
  67
  68 #ifdef CONFIG_SOC_OMAP2420
  69 static struct map_desc omap242x_io_desc[] __initdata = {
  70         {
  71                 .virtual        = DSP_MEM_2420_VIRT,
  72                 .pfn            = __phys_to_pfn(DSP_MEM_2420_PHYS),
  73                 .length         = DSP_MEM_2420_SIZE,
  74                 .type           = MT_DEVICE
  75         },
  76         {
  77                 .virtual        = DSP_IPI_2420_VIRT,
  78                 .pfn            = __phys_to_pfn(DSP_IPI_2420_PHYS),
  79                 .length         = DSP_IPI_2420_SIZE,
  80                 .type           = MT_DEVICE
  81         },
  82         {
  83                 .virtual        = DSP_MMU_2420_VIRT,
  84                 .pfn            = __phys_to_pfn(DSP_MMU_2420_PHYS),
  85                 .length         = DSP_MMU_2420_SIZE,
  86                 .type           = MT_DEVICE
  87         },
  88 };
  89
  90 #endif
  91
  92 #ifdef CONFIG_SOC_OMAP2430
  93 static struct map_desc omap243x_io_desc[] __initdata = {
  94         {
  95                 .virtual        = L4_WK_243X_VIRT,
  96                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  97                 .length         = L4_WK_243X_SIZE,
  98                 .type           = MT_DEVICE
  99         },
 100         {
 101                 .virtual        = OMAP243X_GPMC_VIRT,
 102                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
 103                 .length         = OMAP243X_GPMC_SIZE,
 104                 .type           = MT_DEVICE
 105         },
 106         {
 107                 .virtual        = OMAP243X_SDRC_VIRT,
 108                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
 109                 .length         = OMAP243X_SDRC_SIZE,
 110                 .type           = MT_DEVICE
 111         },
 112         {
 113                 .virtual        = OMAP243X_SMS_VIRT,
 114                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
 115                 .length         = OMAP243X_SMS_SIZE,
 116                 .type           = MT_DEVICE
 117         },
 118 };
 119 #endif
 120 #endif
 121
 122 #ifdef  CONFIG_ARCH_OMAP3
 123 static struct map_desc omap34xx_io_desc[] __initdata = {
 124         {
 125                 .virtual        = L3_34XX_VIRT,
 126                 .pfn            = __phys_to_pfn(L3_34XX_PHYS),
 127                 .length         = L3_34XX_SIZE,
 128                 .type           = MT_DEVICE
 129         },
 130         {
 131                 .virtual        = L4_34XX_VIRT,
 132                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 133                 .length         = L4_34XX_SIZE,
 134                 .type           = MT_DEVICE
 135         },
 136         {
 137                 .virtual        = OMAP34XX_GPMC_VIRT,
 138                 .pfn            = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
 139                 .length         = OMAP34XX_GPMC_SIZE,
 140                 .type           = MT_DEVICE
 141         },
 142         {
 143                 .virtual        = OMAP343X_SMS_VIRT,
 144                 .pfn            = __phys_to_pfn(OMAP343X_SMS_PHYS),
 145                 .length         = OMAP343X_SMS_SIZE,
 146                 .type           = MT_DEVICE
 147         },
 148         {
 149                 .virtual        = OMAP343X_SDRC_VIRT,
 150                 .pfn            = __phys_to_pfn(OMAP343X_SDRC_PHYS),
 151                 .length         = OMAP343X_SDRC_SIZE,
 152                 .type           = MT_DEVICE
 153         },
 154         {
 155                 .virtual        = L4_PER_34XX_VIRT,
 156                 .pfn            = __phys_to_pfn(L4_PER_34XX_PHYS),
 157                 .length         = L4_PER_34XX_SIZE,
 158                 .type           = MT_DEVICE
 159         },
 160         {
 161                 .virtual        = L4_EMU_34XX_VIRT,
 162                 .pfn            = __phys_to_pfn(L4_EMU_34XX_PHYS),
 163                 .length         = L4_EMU_34XX_SIZE,
 164                 .type           = MT_DEVICE
 165         },
 166 #if defined(CONFIG_DEBUG_LL) &&                                                 \
 167         (defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
 168         {
 169                 .virtual        = ZOOM_UART_VIRT,
 170                 .pfn            = __phys_to_pfn(ZOOM_UART_BASE),
 171                 .length         = SZ_1M,
 172                 .type           = MT_DEVICE
 173         },
 174 #endif
 175 };
 176 #endif
 177
 178 #ifdef CONFIG_SOC_TI81XX
 179 static struct map_desc omapti81xx_io_desc[] __initdata = {
 180         {
 181                 .virtual        = L4_34XX_VIRT,
 182                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 183                 .length         = L4_34XX_SIZE,
 184                 .type           = MT_DEVICE
 185         }
 186 };
 187 #endif
 188
 189 #ifdef CONFIG_SOC_AM33XX
 190 static struct map_desc omapam33xx_io_desc[] __initdata = {
 191         {
 192                 .virtual        = L4_34XX_VIRT,
 193                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 194                 .length         = L4_34XX_SIZE,
 195                 .type           = MT_DEVICE
 196         },
 197         {
 198                 .virtual        = L4_WK_AM33XX_VIRT,
 199                 .pfn            = __phys_to_pfn(L4_WK_AM33XX_PHYS),
 200                 .length         = L4_WK_AM33XX_SIZE,
 201                 .type           = MT_DEVICE
 202         }
 203 };
 204 #endif
 205
 206 #ifdef  CONFIG_ARCH_OMAP4
 207 static struct map_desc omap44xx_io_desc[] __initdata = {
 208         {
 209                 .virtual        = L3_44XX_VIRT,
 210                 .pfn            = __phys_to_pfn(L3_44XX_PHYS),
 211                 .length         = L3_44XX_SIZE,
 212                 .type           = MT_DEVICE,
 213         },
 214         {
 215                 .virtual        = L4_44XX_VIRT,
 216                 .pfn            = __phys_to_pfn(L4_44XX_PHYS),
 217                 .length         = L4_44XX_SIZE,
 218                 .type           = MT_DEVICE,
 219         },
 220         {
 221                 .virtual        = L4_PER_44XX_VIRT,
 222                 .pfn            = __phys_to_pfn(L4_PER_44XX_PHYS),
 223                 .length         = L4_PER_44XX_SIZE,
 224                 .type           = MT_DEVICE,
 225         },
 226 #ifdef CONFIG_OMAP4_ERRATA_I688
 227         {
 228                 .virtual        = OMAP4_SRAM_VA,
 229                 .pfn            = __phys_to_pfn(OMAP4_SRAM_PA),
 230                 .length         = PAGE_SIZE,
 231                 .type           = MT_MEMORY_SO,
 232         },
 233 #endif
 234
 235 };
 236 #endif
 237
 238 #ifdef  CONFIG_SOC_OMAP5
 239 static struct map_desc omap54xx_io_desc[] __initdata = {
 240         {
 241                 .virtual        = L3_54XX_VIRT,
 242                 .pfn            = __phys_to_pfn(L3_54XX_PHYS),
 243                 .length         = L3_54XX_SIZE,
 244                 .type           = MT_DEVICE,
 245         },
 246         {
 247                 .virtual        = L4_54XX_VIRT,
 248                 .pfn            = __phys_to_pfn(L4_54XX_PHYS),
 249                 .length         = L4_54XX_SIZE,
 250                 .type           = MT_DEVICE,
 251         },
 252         {
 253                 .virtual        = L4_WK_54XX_VIRT,
 254                 .pfn            = __phys_to_pfn(L4_WK_54XX_PHYS),
 255                 .length         = L4_WK_54XX_SIZE,
 256                 .type           = MT_DEVICE,
 257         },
 258         {
 259                 .virtual        = L4_PER_54XX_VIRT,
 260                 .pfn            = __phys_to_pfn(L4_PER_54XX_PHYS),
 261                 .length         = L4_PER_54XX_SIZE,
 262                 .type           = MT_DEVICE,
 263         },
 264 };
 265 #endif
 266
 267 #ifdef CONFIG_SOC_OMAP2420
 268 void __init omap242x_map_common_io(void)
 269 {
 270         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 271         iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
 272 }
 273 #endif
 274
 275 #ifdef CONFIG_SOC_OMAP2430
 276 void __init omap243x_map_common_io(void)
 277 {
 278         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 279         iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
 280 }
 281 #endif
 282
 283 #ifdef CONFIG_ARCH_OMAP3
 284 void __init omap34xx_map_common_io(void)
 285 {
 286         iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
 287 }
 288 #endif
 289
 290 #ifdef CONFIG_SOC_TI81XX
 291 void __init omapti81xx_map_common_io(void)
 292 {
 293         iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc));
 294 }
 295 #endif
 296
 297 #ifdef CONFIG_SOC_AM33XX
 298 void __init omapam33xx_map_common_io(void)
 299 {
 300         iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc));
 301 }
 302 #endif
 303
 304 #ifdef CONFIG_ARCH_OMAP4
 305 void __init omap44xx_map_common_io(void)
 306 {
 307         iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
 308         omap_barriers_init();
 309 }
 310 #endif
 311
 312 #ifdef CONFIG_SOC_OMAP5
 313 void __init omap5_map_common_io(void)
 314 {
 315         iotable_init(omap54xx_io_desc, ARRAY_SIZE(omap54xx_io_desc));
 316 }
 317 #endif
 318 /*
 319  * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
 320  *
 321  * Sets the CORE DPLL3 M2 divider to the same value that it's at
 322  * currently.  This has the effect of setting the SDRC SDRAM AC timing
 323  * registers to the values currently defined by the kernel.  Currently
 324  * only defined for OMAP3; will return 0 if called on OMAP2.  Returns
 325  * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
 326  * or passes along the return value of clk_set_rate().
 327  */
 328 static int __init _omap2_init_reprogram_sdrc(void)
 329 {
 330         struct clk *dpll3_m2_ck;
 331         int v = -EINVAL;
 332         long rate;
 333
 334         if (!cpu_is_omap34xx())
 335                 return 0;
 336
 337         dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck");
 338         if (IS_ERR(dpll3_m2_ck))
 339                 return -EINVAL;
 340
 341         rate = clk_get_rate(dpll3_m2_ck);
 342         pr_info("Reprogramming SDRC clock to %ld Hz\n", rate);
 343         v = clk_set_rate(dpll3_m2_ck, rate);
 344         if (v)
 345                 pr_err("dpll3_m2_clk rate change failed: %d\n", v);
 346
 347         clk_put(dpll3_m2_ck);
 348
 349         return v;
 350 }
 351
 352 static int _set_hwmod_postsetup_state(struct omap_hwmod *oh, void *data)
 353 {
 354         return omap_hwmod_set_postsetup_state(oh, *(u8 *)data);
 355 }
 356
 357 static void __init omap_common_init_early(void)
 358 {
 359         omap_init_consistent_dma_size();
 360 }
 361
 362 static void __init omap_hwmod_init_postsetup(void)
 363 {
 364         u8 postsetup_state;
 365
 366         /* Set the default postsetup state for all hwmods */
 367 #ifdef CONFIG_PM_RUNTIME
 368         postsetup_state = _HWMOD_STATE_IDLE;
 369 #else
 370         postsetup_state = _HWMOD_STATE_ENABLED;
 371 #endif
 372         omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state);
 373
 374         omap_pm_if_early_init();
 375 }
 376
 377 #ifdef CONFIG_SOC_OMAP2420
 378 void __init omap2420_init_early(void)
 379 {
 380         omap2_set_globals_242x();
 381         omap2xxx_check_revision();
 382         omap_common_init_early();
 383         omap2xxx_voltagedomains_init();
 384         omap242x_powerdomains_init();
 385         omap242x_clockdomains_init();
 386         omap2420_hwmod_init();
 387         omap_hwmod_init_postsetup();
 388         omap2420_clk_init();
 389 }
 390
 391 void __init omap2420_init_late(void)
 392 {
 393         omap_mux_late_init();
 394         omap2_common_pm_late_init();
 395         omap2_pm_init();
 396 }
 397 #endif
 398
 399 #ifdef CONFIG_SOC_OMAP2430
 400 void __init omap2430_init_early(void)
 401 {
 402         omap2_set_globals_243x();
 403         omap2xxx_check_revision();
 404         omap_common_init_early();
 405         omap2xxx_voltagedomains_init();
 406         omap243x_powerdomains_init();
 407         omap243x_clockdomains_init();
 408         omap2430_hwmod_init();
 409         omap_hwmod_init_postsetup();
 410         omap2430_clk_init();
 411 }
 412
 413 void __init omap2430_init_late(void)
 414 {
 415         omap_mux_late_init();
 416         omap2_common_pm_late_init();
 417         omap2_pm_init();
 418 }
 419 #endif
 420
 421 /*
 422  * Currently only board-omap3beagle.c should call this because of the
 423  * same machine_id for 34xx and 36xx beagle.. Will get fixed with DT.
 424  */
 425 #ifdef CONFIG_ARCH_OMAP3
 426 void __init omap3_init_early(void)
 427 {
 428         omap2_set_globals_3xxx();
 429         omap3xxx_check_revision();
 430         omap3xxx_check_features();
 431         omap_common_init_early();
 432         omap3xxx_voltagedomains_init();
 433         omap3xxx_powerdomains_init();
 434         omap3xxx_clockdomains_init();
 435         omap3xxx_hwmod_init();
 436         omap_hwmod_init_postsetup();
 437         omap3xxx_clk_init();
 438 }
 439
 440 void __init omap3430_init_early(void)
 441 {
 442         omap3_init_early();
 443 }
 444
 445 void __init omap35xx_init_early(void)
 446 {
 447         omap3_init_early();
 448 }
 449
 450 void __init omap3630_init_early(void)
 451 {
 452         omap3_init_early();
 453 }
 454
 455 void __init am35xx_init_early(void)
 456 {
 457         omap3_init_early();
 458 }
 459
 460 void __init ti81xx_init_early(void)
 461 {
 462         omap2_set_globals_ti81xx();
 463         omap3xxx_check_revision();
 464         ti81xx_check_features();
 465         omap_common_init_early();
 466         omap3xxx_voltagedomains_init();
 467         omap3xxx_powerdomains_init();
 468         omap3xxx_clockdomains_init();
 469         omap3xxx_hwmod_init();
 470         omap_hwmod_init_postsetup();
 471         omap3xxx_clk_init();
 472 }
 473
 474 void __init omap3_init_late(void)
 475 {
 476         omap_mux_late_init();
 477         omap2_common_pm_late_init();
 478         omap3_pm_init();
 479 }
 480
 481 void __init omap3430_init_late(void)
 482 {
 483         omap_mux_late_init();
 484         omap2_common_pm_late_init();
 485         omap3_pm_init();
 486 }
 487
 488 void __init omap35xx_init_late(void)
 489 {
 490         omap_mux_late_init();
 491         omap2_common_pm_late_init();
 492         omap3_pm_init();
 493 }
 494
 495 void __init omap3630_init_late(void)
 496 {
 497         omap_mux_late_init();
 498         omap2_common_pm_late_init();
 499         omap3_pm_init();
 500 }
 501
 502 void __init am35xx_init_late(void)
 503 {
 504         omap_mux_late_init();
 505         omap2_common_pm_late_init();
 506         omap3_pm_init();
 507 }
 508
 509 void __init ti81xx_init_late(void)
 510 {
 511         omap_mux_late_init();
 512         omap2_common_pm_late_init();
 513         omap3_pm_init();
 514 }
 515 #endif
 516
 517 #ifdef CONFIG_SOC_AM33XX
 518 void __init am33xx_init_early(void)
 519 {
 520         omap2_set_globals_am33xx();
 521         omap3xxx_check_revision();
 522         ti81xx_check_features();
 523         omap_common_init_early();
 524         am33xx_voltagedomains_init();
 525         am33xx_powerdomains_init();
 526         am33xx_clockdomains_init();
 527         am33xx_hwmod_init();
 528         omap_hwmod_init_postsetup();
 529         am33xx_clk_init();
 530 }
 531 #endif
 532
 533 #ifdef CONFIG_ARCH_OMAP4
 534 void __init omap4430_init_early(void)
 535 {
 536         omap2_set_globals_443x();
 537         omap4xxx_check_revision();
 538         omap4xxx_check_features();
 539         omap_common_init_early();
 540         omap44xx_voltagedomains_init();
 541         omap44xx_powerdomains_init();
 542         omap44xx_clockdomains_init();
 543         omap44xx_hwmod_init();
 544         omap_hwmod_init_postsetup();
 545         omap4xxx_clk_init();
 546 }
 547
 548 void __init omap4430_init_late(void)
 549 {
 550         omap_mux_late_init();
 551         omap2_common_pm_late_init();
 552         omap4_pm_init();
 553 }
 554 #endif
 555
 556 #ifdef CONFIG_SOC_OMAP5
 557 void __init omap5_init_early(void)
 558 {
 559         omap2_set_globals_5xxx();
 560         omap5xxx_check_revision();
 561         omap_common_init_early();
 562 }
 563 #endif
 564
 565 void __init omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0,
 566                                       struct omap_sdrc_params *sdrc_cs1)
 567 {
 568         omap_sram_init();
 569
 570         if (cpu_is_omap24xx() || omap3_has_sdrc()) {
 571                 omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
 572                 _omap2_init_reprogram_sdrc();
 573         }
 574 }