arch/arm/mach-shmobile/setup-emev2.c

   1 /*
   2  * Emma Mobile EV2 processor support
   3  *
   4  * Copyright (C) 2012  Magnus Damm
   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 as published by
   8  * the Free Software Foundation; version 2 of the License.
   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 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/irq.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/platform_data/gpio-em.h>
  25 #include <linux/of_platform.h>
  26 #include <linux/delay.h>
  27 #include <linux/input.h>
  28 #include <linux/io.h>
  29 #include <linux/of_irq.h>
  30 #include <mach/hardware.h>
  31 #include <mach/common.h>
  32 #include <mach/emev2.h>
  33 #include <mach/irqs.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/hardware/gic.h>
  39
  40 static struct map_desc emev2_io_desc[] __initdata = {
  41 #ifdef CONFIG_SMP
  42         /* 128K entity map for 0xe0100000 (SMU) */
  43         {
  44                 .virtual        = 0xe0100000,
  45                 .pfn            = __phys_to_pfn(0xe0100000),
  46                 .length         = SZ_128K,
  47                 .type           = MT_DEVICE
  48         },
  49         /* 2M mapping for SCU + L2 controller */
  50         {
  51                 .virtual        = 0xf0000000,
  52                 .pfn            = __phys_to_pfn(0x1e000000),
  53                 .length         = SZ_2M,
  54                 .type           = MT_DEVICE
  55         },
  56 #endif
  57 };
  58
  59 void __init emev2_map_io(void)
  60 {
  61         iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
  62 }
  63
  64 /* UART */
  65 static struct resource uart0_resources[] = {
  66         [0]     = {
  67                 .start  = 0xe1020000,
  68                 .end    = 0xe1020037,
  69                 .flags  = IORESOURCE_MEM,
  70         },
  71         [1]     = {
  72                 .start  = 40,
  73                 .flags  = IORESOURCE_IRQ,
  74         }
  75 };
  76
  77 static struct platform_device uart0_device = {
  78         .name           = "serial8250-em",
  79         .id             = 0,
  80         .num_resources  = ARRAY_SIZE(uart0_resources),
  81         .resource       = uart0_resources,
  82 };
  83
  84 static struct resource uart1_resources[] = {
  85         [0]     = {
  86                 .start  = 0xe1030000,
  87                 .end    = 0xe1030037,
  88                 .flags  = IORESOURCE_MEM,
  89         },
  90         [1]     = {
  91                 .start  = 41,
  92                 .flags  = IORESOURCE_IRQ,
  93         }
  94 };
  95
  96 static struct platform_device uart1_device = {
  97         .name           = "serial8250-em",
  98         .id             = 1,
  99         .num_resources  = ARRAY_SIZE(uart1_resources),
 100         .resource       = uart1_resources,
 101 };
 102
 103 static struct resource uart2_resources[] = {
 104         [0]     = {
 105                 .start  = 0xe1040000,
 106                 .end    = 0xe1040037,
 107                 .flags  = IORESOURCE_MEM,
 108         },
 109         [1]     = {
 110                 .start  = 42,
 111                 .flags  = IORESOURCE_IRQ,
 112         }
 113 };
 114
 115 static struct platform_device uart2_device = {
 116         .name           = "serial8250-em",
 117         .id             = 2,
 118         .num_resources  = ARRAY_SIZE(uart2_resources),
 119         .resource       = uart2_resources,
 120 };
 121
 122 static struct resource uart3_resources[] = {
 123         [0]     = {
 124                 .start  = 0xe1050000,
 125                 .end    = 0xe1050037,
 126                 .flags  = IORESOURCE_MEM,
 127         },
 128         [1]     = {
 129                 .start  = 43,
 130                 .flags  = IORESOURCE_IRQ,
 131         }
 132 };
 133
 134 static struct platform_device uart3_device = {
 135         .name           = "serial8250-em",
 136         .id             = 3,
 137         .num_resources  = ARRAY_SIZE(uart3_resources),
 138         .resource       = uart3_resources,
 139 };
 140
 141 /* STI */
 142 static struct resource sti_resources[] = {
 143         [0] = {
 144                 .name   = "STI",
 145                 .start  = 0xe0180000,
 146                 .end    = 0xe0180053,
 147                 .flags  = IORESOURCE_MEM,
 148         },
 149         [1] = {
 150                 .start  = 157,
 151                 .flags  = IORESOURCE_IRQ,
 152         },
 153 };
 154
 155 static struct platform_device sti_device = {
 156         .name           = "em_sti",
 157         .id             = 0,
 158         .resource       = sti_resources,
 159         .num_resources  = ARRAY_SIZE(sti_resources),
 160 };
 161
 162
 163 /* GIO */
 164 static struct gpio_em_config gio0_config = {
 165         .gpio_base = 0,
 166         .irq_base = EMEV2_GPIO_IRQ(0),
 167         .number_of_pins = 32,
 168 };
 169
 170 static struct resource gio0_resources[] = {
 171         [0] = {
 172                 .name   = "GIO_000",
 173                 .start  = 0xe0050000,
 174                 .end    = 0xe005002b,
 175                 .flags  = IORESOURCE_MEM,
 176         },
 177         [1] = {
 178                 .name   = "GIO_000",
 179                 .start  = 0xe0050040,
 180                 .end    = 0xe005005f,
 181                 .flags  = IORESOURCE_MEM,
 182         },
 183         [2] = {
 184                 .start  = 99,
 185                 .flags  = IORESOURCE_IRQ,
 186         },
 187         [3] = {
 188                 .start  = 100,
 189                 .flags  = IORESOURCE_IRQ,
 190         },
 191 };
 192
 193 static struct platform_device gio0_device = {
 194         .name           = "em_gio",
 195         .id             = 0,
 196         .resource       = gio0_resources,
 197         .num_resources  = ARRAY_SIZE(gio0_resources),
 198         .dev            = {
 199                 .platform_data  = &gio0_config,
 200         },
 201 };
 202
 203 static struct gpio_em_config gio1_config = {
 204         .gpio_base = 32,
 205         .irq_base = EMEV2_GPIO_IRQ(32),
 206         .number_of_pins = 32,
 207 };
 208
 209 static struct resource gio1_resources[] = {
 210         [0] = {
 211                 .name   = "GIO_032",
 212                 .start  = 0xe0050080,
 213                 .end    = 0xe00500ab,
 214                 .flags  = IORESOURCE_MEM,
 215         },
 216         [1] = {
 217                 .name   = "GIO_032",
 218                 .start  = 0xe00500c0,
 219                 .end    = 0xe00500df,
 220                 .flags  = IORESOURCE_MEM,
 221         },
 222         [2] = {
 223                 .start  = 101,
 224                 .flags  = IORESOURCE_IRQ,
 225         },
 226         [3] = {
 227                 .start  = 102,
 228                 .flags  = IORESOURCE_IRQ,
 229         },
 230 };
 231
 232 static struct platform_device gio1_device = {
 233         .name           = "em_gio",
 234         .id             = 1,
 235         .resource       = gio1_resources,
 236         .num_resources  = ARRAY_SIZE(gio1_resources),
 237         .dev            = {
 238                 .platform_data  = &gio1_config,
 239         },
 240 };
 241
 242 static struct gpio_em_config gio2_config = {
 243         .gpio_base = 64,
 244         .irq_base = EMEV2_GPIO_IRQ(64),
 245         .number_of_pins = 32,
 246 };
 247
 248 static struct resource gio2_resources[] = {
 249         [0] = {
 250                 .name   = "GIO_064",
 251                 .start  = 0xe0050100,
 252                 .end    = 0xe005012b,
 253                 .flags  = IORESOURCE_MEM,
 254         },
 255         [1] = {
 256                 .name   = "GIO_064",
 257                 .start  = 0xe0050140,
 258                 .end    = 0xe005015f,
 259                 .flags  = IORESOURCE_MEM,
 260         },
 261         [2] = {
 262                 .start  = 103,
 263                 .flags  = IORESOURCE_IRQ,
 264         },
 265         [3] = {
 266                 .start  = 104,
 267                 .flags  = IORESOURCE_IRQ,
 268         },
 269 };
 270
 271 static struct platform_device gio2_device = {
 272         .name           = "em_gio",
 273         .id             = 2,
 274         .resource       = gio2_resources,
 275         .num_resources  = ARRAY_SIZE(gio2_resources),
 276         .dev            = {
 277                 .platform_data  = &gio2_config,
 278         },
 279 };
 280
 281 static struct gpio_em_config gio3_config = {
 282         .gpio_base = 96,
 283         .irq_base = EMEV2_GPIO_IRQ(96),
 284         .number_of_pins = 32,
 285 };
 286
 287 static struct resource gio3_resources[] = {
 288         [0] = {
 289                 .name   = "GIO_096",
 290                 .start  = 0xe0050100,
 291                 .end    = 0xe005012b,
 292                 .flags  = IORESOURCE_MEM,
 293         },
 294         [1] = {
 295                 .name   = "GIO_096",
 296                 .start  = 0xe0050140,
 297                 .end    = 0xe005015f,
 298                 .flags  = IORESOURCE_MEM,
 299         },
 300         [2] = {
 301                 .start  = 105,
 302                 .flags  = IORESOURCE_IRQ,
 303         },
 304         [3] = {
 305                 .start  = 106,
 306                 .flags  = IORESOURCE_IRQ,
 307         },
 308 };
 309
 310 static struct platform_device gio3_device = {
 311         .name           = "em_gio",
 312         .id             = 3,
 313         .resource       = gio3_resources,
 314         .num_resources  = ARRAY_SIZE(gio3_resources),
 315         .dev            = {
 316                 .platform_data  = &gio3_config,
 317         },
 318 };
 319
 320 static struct gpio_em_config gio4_config = {
 321         .gpio_base = 128,
 322         .irq_base = EMEV2_GPIO_IRQ(128),
 323         .number_of_pins = 31,
 324 };
 325
 326 static struct resource gio4_resources[] = {
 327         [0] = {
 328                 .name   = "GIO_128",
 329                 .start  = 0xe0050200,
 330                 .end    = 0xe005022b,
 331                 .flags  = IORESOURCE_MEM,
 332         },
 333         [1] = {
 334                 .name   = "GIO_128",
 335                 .start  = 0xe0050240,
 336                 .end    = 0xe005025f,
 337                 .flags  = IORESOURCE_MEM,
 338         },
 339         [2] = {
 340                 .start  = 107,
 341                 .flags  = IORESOURCE_IRQ,
 342         },
 343         [3] = {
 344                 .start  = 108,
 345                 .flags  = IORESOURCE_IRQ,
 346         },
 347 };
 348
 349 static struct platform_device gio4_device = {
 350         .name           = "em_gio",
 351         .id             = 4,
 352         .resource       = gio4_resources,
 353         .num_resources  = ARRAY_SIZE(gio4_resources),
 354         .dev            = {
 355                 .platform_data  = &gio4_config,
 356         },
 357 };
 358
 359 static struct resource pmu_resources[] = {
 360         [0] = {
 361                 .start  = 152,
 362                 .end    = 152,
 363                 .flags  = IORESOURCE_IRQ,
 364         },
 365         [1] = {
 366                 .start  = 153,
 367                 .end    = 153,
 368                 .flags  = IORESOURCE_IRQ,
 369         },
 370 };
 371
 372 static struct platform_device pmu_device = {
 373         .name           = "arm-pmu",
 374         .id             = -1,
 375         .num_resources  = ARRAY_SIZE(pmu_resources),
 376         .resource       = pmu_resources,
 377 };
 378
 379 static struct platform_device *emev2_early_devices[] __initdata = {
 380         &uart0_device,
 381         &uart1_device,
 382         &uart2_device,
 383         &uart3_device,
 384 };
 385
 386 static struct platform_device *emev2_late_devices[] __initdata = {
 387         &sti_device,
 388         &gio0_device,
 389         &gio1_device,
 390         &gio2_device,
 391         &gio3_device,
 392         &gio4_device,
 393         &pmu_device,
 394 };
 395
 396 void __init emev2_add_standard_devices(void)
 397 {
 398         emev2_clock_init();
 399
 400         platform_add_devices(emev2_early_devices,
 401                              ARRAY_SIZE(emev2_early_devices));
 402
 403         platform_add_devices(emev2_late_devices,
 404                              ARRAY_SIZE(emev2_late_devices));
 405 }
 406
 407 void __init emev2_init_delay(void)
 408 {
 409         shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
 410 }
 411
 412 void __init emev2_add_early_devices(void)
 413 {
 414         emev2_init_delay();
 415
 416         early_platform_add_devices(emev2_early_devices,
 417                                    ARRAY_SIZE(emev2_early_devices));
 418
 419         /* setup early console here as well */
 420         shmobile_setup_console();
 421 }
 422
 423 void __init emev2_init_irq(void)
 424 {
 425         void __iomem *gic_dist_base;
 426         void __iomem *gic_cpu_base;
 427
 428         /* Static mappings, never released */
 429         gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
 430         gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
 431         BUG_ON(!gic_dist_base || !gic_cpu_base);
 432
 433         /* Use GIC to handle interrupts */
 434         gic_init(0, 29, gic_dist_base, gic_cpu_base);
 435 }
 436
 437 #ifdef CONFIG_USE_OF
 438 static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
 439         { }
 440 };
 441
 442 void __init emev2_add_standard_devices_dt(void)
 443 {
 444         of_platform_populate(NULL, of_default_bus_match_table,
 445                              emev2_auxdata_lookup, NULL);
 446 }
 447
 448 static const struct of_device_id emev2_dt_irq_match[] = {
 449         { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
 450         {},
 451 };
 452
 453 static const char *emev2_boards_compat_dt[] __initdata = {
 454         "renesas,emev2",
 455         NULL,
 456 };
 457
 458 void __init emev2_init_irq_dt(void)
 459 {
 460         of_irq_init(emev2_dt_irq_match);
 461 }
 462
 463 DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
 464         .smp            = smp_ops(emev2_smp_ops),
 465         .init_early     = emev2_init_delay,
 466         .nr_irqs        = NR_IRQS_LEGACY,
 467         .init_irq       = emev2_init_irq_dt,
 468         .handle_irq     = gic_handle_irq,
 469         .init_machine   = emev2_add_standard_devices_dt,
 470         .timer          = &shmobile_timer,
 471         .dt_compat      = emev2_boards_compat_dt,
 472 MACHINE_END
 473
 474 #endif /* CONFIG_USE_OF */