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