arch/arm/mach-realview/realview_eb.c

   1 /*
   2  *  linux/arch/arm/mach-realview/realview_eb.c
   3  *
   4  *  Copyright (C) 2004 ARM Limited
   5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/sysdev.h>
  25 #include <linux/amba/bus.h>
  26 #include <linux/amba/pl061.h>
  27 #include <linux/amba/mmci.h>
  28 #include <linux/amba/pl022.h>
  29 #include <linux/io.h>
  30
  31 #include <mach/hardware.h>
  32 #include <asm/irq.h>
  33 #include <asm/leds.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/pmu.h>
  36 #include <asm/pgtable.h>
  37 #include <asm/hardware/gic.h>
  38 #include <asm/hardware/cache-l2x0.h>
  39 #include <asm/localtimer.h>
  40
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/map.h>
  43 #include <asm/mach/time.h>
  44
  45 #include <mach/board-eb.h>
  46 #include <mach/irqs.h>
  47
  48 #include "core.h"
  49
  50 static struct map_desc realview_eb_io_desc[] __initdata = {
  51         {
  52                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  53                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  54                 .length         = SZ_4K,
  55                 .type           = MT_DEVICE,
  56         }, {
  57                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE),
  58                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
  59                 .length         = SZ_4K,
  60                 .type           = MT_DEVICE,
  61         }, {
  62                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
  63                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE),
  64                 .length         = SZ_4K,
  65                 .type           = MT_DEVICE,
  66         }, {
  67                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  68                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  69                 .length         = SZ_4K,
  70                 .type           = MT_DEVICE,
  71         }, {
  72                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE),
  73                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
  74                 .length         = SZ_4K,
  75                 .type           = MT_DEVICE,
  76         }, {
  77                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
  78                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
  79                 .length         = SZ_4K,
  80                 .type           = MT_DEVICE,
  81         },
  82 #ifdef CONFIG_DEBUG_LL
  83         {
  84                 .virtual        = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
  85                 .pfn            = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
  86                 .length         = SZ_4K,
  87                 .type           = MT_DEVICE,
  88         }
  89 #endif
  90 };
  91
  92 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
  93         {
  94                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
  95                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
  96                 .length         = SZ_4K,
  97                 .type           = MT_DEVICE,
  98         }, {
  99                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
 100                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
 101                 .length         = SZ_4K,
 102                 .type           = MT_DEVICE,
 103         }, {
 104                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
 105                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
 106                 .length         = SZ_8K,
 107                 .type           = MT_DEVICE,
 108         }
 109 };
 110
 111 static void __init realview_eb_map_io(void)
 112 {
 113         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
 114         if (core_tile_eb11mp() || core_tile_a9mp())
 115                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
 116 }
 117
 118 static struct pl061_platform_data gpio0_plat_data = {
 119         .gpio_base      = 0,
 120         .irq_base       = -1,
 121 };
 122
 123 static struct pl061_platform_data gpio1_plat_data = {
 124         .gpio_base      = 8,
 125         .irq_base       = -1,
 126 };
 127
 128 static struct pl061_platform_data gpio2_plat_data = {
 129         .gpio_base      = 16,
 130         .irq_base       = -1,
 131 };
 132
 133 static struct pl022_ssp_controller ssp0_plat_data = {
 134         .bus_id = 0,
 135         .enable_dma = 0,
 136         .num_chipselect = 1,
 137 };
 138
 139 /*
 140  * RealView EB AMBA devices
 141  */
 142
 143 /*
 144  * These devices are connected via the core APB bridge
 145  */
 146 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
 147 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
 148
 149 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
 150 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 151 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
 152 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
 153
 154 /*
 155  * These devices are connected directly to the multi-layer AHB switch
 156  */
 157 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
 158 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 159 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
 160 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
 161
 162 /*
 163  * These devices are connected via the core APB bridge
 164  */
 165 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 166 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
 167 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
 168 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 169 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
 170
 171 /*
 172  * These devices are connected via the DMA APB bridge
 173  */
 174 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
 175 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
 176 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
 177 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
 178 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
 179 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
 180
 181 /* FPGA Primecells */
 182 AMBA_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
 183 AMBA_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
 184 AMBA_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
 185 AMBA_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
 186 AMBA_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
 187
 188 /* DevChip Primecells */
 189 AMBA_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
 190 AMBA_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
 191 AMBA_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
 192 AMBA_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
 193 AMBA_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
 194 AMBA_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
 195 AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
 196 AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
 197 AMBA_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
 198 AMBA_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
 199 AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
 200 AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
 201 AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
 202 AMBA_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   &ssp0_plat_data);
 203
 204 static struct amba_device *amba_devs[] __initdata = {
 205         &dmac_device,
 206         &uart0_device,
 207         &uart1_device,
 208         &uart2_device,
 209         &uart3_device,
 210         &smc_device,
 211         &clcd_device,
 212         &sctl_device,
 213         &wdog_device,
 214         &gpio0_device,
 215         &gpio1_device,
 216         &gpio2_device,
 217         &rtc_device,
 218         &sci0_device,
 219         &ssp0_device,
 220         &aaci_device,
 221         &mmc0_device,
 222         &kmi0_device,
 223         &kmi1_device,
 224 };
 225
 226 /*
 227  * RealView EB platform devices
 228  */
 229 static struct resource realview_eb_flash_resource = {
 230         .start                  = REALVIEW_EB_FLASH_BASE,
 231         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
 232         .flags                  = IORESOURCE_MEM,
 233 };
 234
 235 static struct resource realview_eb_eth_resources[] = {
 236         [0] = {
 237                 .start          = REALVIEW_EB_ETH_BASE,
 238                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
 239                 .flags          = IORESOURCE_MEM,
 240         },
 241         [1] = {
 242                 .start          = IRQ_EB_ETH,
 243                 .end            = IRQ_EB_ETH,
 244                 .flags          = IORESOURCE_IRQ,
 245         },
 246 };
 247
 248 /*
 249  * Detect and register the correct Ethernet device. RealView/EB rev D
 250  * platforms use the newer SMSC LAN9118 Ethernet chip
 251  */
 252 static int eth_device_register(void)
 253 {
 254         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
 255         const char *name = NULL;
 256         u32 idrev;
 257
 258         if (!eth_addr)
 259                 return -ENOMEM;
 260
 261         idrev = readl(eth_addr + 0x50);
 262         if ((idrev & 0xFFFF0000) != 0x01180000)
 263                 /* SMSC LAN9118 not present, use LAN91C111 instead */
 264                 name = "smc91x";
 265
 266         iounmap(eth_addr);
 267         return realview_eth_register(name, realview_eb_eth_resources);
 268 }
 269
 270 static struct resource realview_eb_isp1761_resources[] = {
 271         [0] = {
 272                 .start          = REALVIEW_EB_USB_BASE,
 273                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
 274                 .flags          = IORESOURCE_MEM,
 275         },
 276         [1] = {
 277                 .start          = IRQ_EB_USB,
 278                 .end            = IRQ_EB_USB,
 279                 .flags          = IORESOURCE_IRQ,
 280         },
 281 };
 282
 283 static struct resource pmu_resources[] = {
 284         [0] = {
 285                 .start          = IRQ_EB11MP_PMU_CPU0,
 286                 .end            = IRQ_EB11MP_PMU_CPU0,
 287                 .flags          = IORESOURCE_IRQ,
 288         },
 289         [1] = {
 290                 .start          = IRQ_EB11MP_PMU_CPU1,
 291                 .end            = IRQ_EB11MP_PMU_CPU1,
 292                 .flags          = IORESOURCE_IRQ,
 293         },
 294         [2] = {
 295                 .start          = IRQ_EB11MP_PMU_CPU2,
 296                 .end            = IRQ_EB11MP_PMU_CPU2,
 297                 .flags          = IORESOURCE_IRQ,
 298         },
 299         [3] = {
 300                 .start          = IRQ_EB11MP_PMU_CPU3,
 301                 .end            = IRQ_EB11MP_PMU_CPU3,
 302                 .flags          = IORESOURCE_IRQ,
 303         },
 304 };
 305
 306 static struct platform_device pmu_device = {
 307         .name                   = "arm-pmu",
 308         .id                     = ARM_PMU_DEVICE_CPU,
 309         .num_resources          = ARRAY_SIZE(pmu_resources),
 310         .resource               = pmu_resources,
 311 };
 312
 313 static struct resource char_lcd_resources[] = {
 314         {
 315                 .start = REALVIEW_CHAR_LCD_BASE,
 316                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 317                 .flags = IORESOURCE_MEM,
 318         },
 319         {
 320                 .start  = IRQ_EB_CHARLCD,
 321                 .end    = IRQ_EB_CHARLCD,
 322                 .flags  = IORESOURCE_IRQ,
 323         },
 324 };
 325
 326 static struct platform_device char_lcd_device = {
 327         .name           =       "arm-charlcd",
 328         .id             =       -1,
 329         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 330         .resource       =       char_lcd_resources,
 331 };
 332
 333 static void __init gic_init_irq(void)
 334 {
 335         if (core_tile_eb11mp() || core_tile_a9mp()) {
 336                 unsigned int pldctrl;
 337
 338                 /* new irq mode */
 339                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 340                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 341                 pldctrl |= 0x00800000;
 342                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 343                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 344
 345                 /* core tile GIC, primary */
 346                 gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
 347                          __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
 348
 349 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 350                 /* board GIC, secondary */
 351                 gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
 352                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
 353                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 354 #endif
 355         } else {
 356                 /* board GIC, primary */
 357                 gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
 358                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
 359         }
 360 }
 361
 362 /*
 363  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 364  */
 365 static void realview_eb11mp_fixup(void)
 366 {
 367         /* AMBA devices */
 368         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 369         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 370         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 371         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 372         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 373         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 374         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 375         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 376         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 377         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 378         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 379         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 380         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 381         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 382         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 383         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 384         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 385         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 386
 387         /* platform devices */
 388         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
 389         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
 390         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
 391         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
 392 }
 393
 394 static void __init realview_eb_timer_init(void)
 395 {
 396         unsigned int timer_irq;
 397
 398         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
 399         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
 400         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 401         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 402
 403         if (core_tile_eb11mp() || core_tile_a9mp()) {
 404 #ifdef CONFIG_LOCAL_TIMERS
 405                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
 406 #endif
 407                 timer_irq = IRQ_EB11MP_TIMER0_1;
 408         } else
 409                 timer_irq = IRQ_EB_TIMER0_1;
 410
 411         realview_timer_init(timer_irq);
 412 }
 413
 414 static struct sys_timer realview_eb_timer = {
 415         .init           = realview_eb_timer_init,
 416 };
 417
 418 static void realview_eb_reset(char mode)
 419 {
 420         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 421         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 422
 423         /*
 424          * To reset, we hit the on-board reset register
 425          * in the system FPGA
 426          */
 427         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 428         if (core_tile_eb11mp())
 429                 __raw_writel(0x0008, reset_ctrl);
 430 }
 431
 432 static void __init realview_eb_init(void)
 433 {
 434         int i;
 435
 436         if (core_tile_eb11mp() || core_tile_a9mp()) {
 437                 realview_eb11mp_fixup();
 438
 439 #ifdef CONFIG_CACHE_L2X0
 440                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 441                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 442                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 443 #endif
 444                 platform_device_register(&pmu_device);
 445         }
 446
 447         realview_flash_register(&realview_eb_flash_resource, 1);
 448         platform_device_register(&realview_i2c_device);
 449         platform_device_register(&char_lcd_device);
 450         eth_device_register();
 451         realview_usb_register(realview_eb_isp1761_resources);
 452
 453         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 454                 struct amba_device *d = amba_devs[i];
 455                 amba_device_register(d, &iomem_resource);
 456         }
 457
 458 #ifdef CONFIG_LEDS
 459         leds_event = realview_leds_event;
 460 #endif
 461         realview_reset = realview_eb_reset;
 462 }
 463
 464 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 465         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 466         .atag_offset    = 0x100,
 467         .fixup          = realview_fixup,
 468         .map_io         = realview_eb_map_io,
 469         .init_early     = realview_init_early,
 470         .init_irq       = gic_init_irq,
 471         .timer          = &realview_eb_timer,
 472         .init_machine   = realview_eb_init,
 473 #ifdef CONFIG_ZONE_DMA
 474         .dma_zone_size  = SZ_256M,
 475 #endif
 476 MACHINE_END