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/device.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_SCU_BASE),
  95                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_SCU_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 };
 121
 122 static struct pl061_platform_data gpio1_plat_data = {
 123         .gpio_base      = 8,
 124 };
 125
 126 static struct pl061_platform_data gpio2_plat_data = {
 127         .gpio_base      = 16,
 128 };
 129
 130 static struct pl022_ssp_controller ssp0_plat_data = {
 131         .bus_id = 0,
 132         .enable_dma = 0,
 133         .num_chipselect = 1,
 134 };
 135
 136 /*
 137  * RealView EB AMBA devices
 138  */
 139
 140 /*
 141  * These devices are connected via the core APB bridge
 142  */
 143 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
 144 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
 145
 146 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
 147 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 148 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
 149 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
 150
 151 /*
 152  * These devices are connected directly to the multi-layer AHB switch
 153  */
 154 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
 155 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 156 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
 157 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
 158
 159 /*
 160  * These devices are connected via the core APB bridge
 161  */
 162 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 163 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
 164 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
 165 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 166 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
 167
 168 /*
 169  * These devices are connected via the DMA APB bridge
 170  */
 171 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
 172 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
 173 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
 174 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
 175 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
 176 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
 177
 178 /* FPGA Primecells */
 179 AMBA_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
 180 AMBA_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
 181 AMBA_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
 182 AMBA_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
 183 AMBA_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
 184
 185 /* DevChip Primecells */
 186 AMBA_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
 187 AMBA_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
 188 AMBA_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
 189 AMBA_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
 190 AMBA_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
 191 AMBA_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
 192 AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
 193 AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
 194 AMBA_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
 195 AMBA_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
 196 AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
 197 AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
 198 AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
 199 AMBA_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   &ssp0_plat_data);
 200
 201 static struct amba_device *amba_devs[] __initdata = {
 202         &dmac_device,
 203         &uart0_device,
 204         &uart1_device,
 205         &uart2_device,
 206         &uart3_device,
 207         &smc_device,
 208         &clcd_device,
 209         &sctl_device,
 210         &wdog_device,
 211         &gpio0_device,
 212         &gpio1_device,
 213         &gpio2_device,
 214         &rtc_device,
 215         &sci0_device,
 216         &ssp0_device,
 217         &aaci_device,
 218         &mmc0_device,
 219         &kmi0_device,
 220         &kmi1_device,
 221 };
 222
 223 /*
 224  * RealView EB platform devices
 225  */
 226 static struct resource realview_eb_flash_resource = {
 227         .start                  = REALVIEW_EB_FLASH_BASE,
 228         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
 229         .flags                  = IORESOURCE_MEM,
 230 };
 231
 232 static struct resource realview_eb_eth_resources[] = {
 233         [0] = {
 234                 .start          = REALVIEW_EB_ETH_BASE,
 235                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
 236                 .flags          = IORESOURCE_MEM,
 237         },
 238         [1] = {
 239                 .start          = IRQ_EB_ETH,
 240                 .end            = IRQ_EB_ETH,
 241                 .flags          = IORESOURCE_IRQ,
 242         },
 243 };
 244
 245 /*
 246  * Detect and register the correct Ethernet device. RealView/EB rev D
 247  * platforms use the newer SMSC LAN9118 Ethernet chip
 248  */
 249 static int eth_device_register(void)
 250 {
 251         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
 252         const char *name = NULL;
 253         u32 idrev;
 254
 255         if (!eth_addr)
 256                 return -ENOMEM;
 257
 258         idrev = readl(eth_addr + 0x50);
 259         if ((idrev & 0xFFFF0000) != 0x01180000)
 260                 /* SMSC LAN9118 not present, use LAN91C111 instead */
 261                 name = "smc91x";
 262
 263         iounmap(eth_addr);
 264         return realview_eth_register(name, realview_eb_eth_resources);
 265 }
 266
 267 static struct resource realview_eb_isp1761_resources[] = {
 268         [0] = {
 269                 .start          = REALVIEW_EB_USB_BASE,
 270                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
 271                 .flags          = IORESOURCE_MEM,
 272         },
 273         [1] = {
 274                 .start          = IRQ_EB_USB,
 275                 .end            = IRQ_EB_USB,
 276                 .flags          = IORESOURCE_IRQ,
 277         },
 278 };
 279
 280 static struct resource pmu_resources[] = {
 281         [0] = {
 282                 .start          = IRQ_EB11MP_PMU_CPU0,
 283                 .end            = IRQ_EB11MP_PMU_CPU0,
 284                 .flags          = IORESOURCE_IRQ,
 285         },
 286         [1] = {
 287                 .start          = IRQ_EB11MP_PMU_CPU1,
 288                 .end            = IRQ_EB11MP_PMU_CPU1,
 289                 .flags          = IORESOURCE_IRQ,
 290         },
 291         [2] = {
 292                 .start          = IRQ_EB11MP_PMU_CPU2,
 293                 .end            = IRQ_EB11MP_PMU_CPU2,
 294                 .flags          = IORESOURCE_IRQ,
 295         },
 296         [3] = {
 297                 .start          = IRQ_EB11MP_PMU_CPU3,
 298                 .end            = IRQ_EB11MP_PMU_CPU3,
 299                 .flags          = IORESOURCE_IRQ,
 300         },
 301 };
 302
 303 static struct platform_device pmu_device = {
 304         .name                   = "arm-pmu",
 305         .id                     = ARM_PMU_DEVICE_CPU,
 306         .num_resources          = ARRAY_SIZE(pmu_resources),
 307         .resource               = pmu_resources,
 308 };
 309
 310 static struct resource char_lcd_resources[] = {
 311         {
 312                 .start = REALVIEW_CHAR_LCD_BASE,
 313                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 314                 .flags = IORESOURCE_MEM,
 315         },
 316         {
 317                 .start  = IRQ_EB_CHARLCD,
 318                 .end    = IRQ_EB_CHARLCD,
 319                 .flags  = IORESOURCE_IRQ,
 320         },
 321 };
 322
 323 static struct platform_device char_lcd_device = {
 324         .name           =       "arm-charlcd",
 325         .id             =       -1,
 326         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 327         .resource       =       char_lcd_resources,
 328 };
 329
 330 static void __init gic_init_irq(void)
 331 {
 332         if (core_tile_eb11mp() || core_tile_a9mp()) {
 333                 unsigned int pldctrl;
 334
 335                 /* new irq mode */
 336                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 337                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 338                 pldctrl |= 0x00800000;
 339                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 340                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 341
 342                 /* core tile GIC, primary */
 343                 gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
 344                          __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
 345
 346 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 347                 /* board GIC, secondary */
 348                 gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
 349                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
 350                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 351 #endif
 352         } else {
 353                 /* board GIC, primary */
 354                 gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
 355                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
 356         }
 357 }
 358
 359 /*
 360  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 361  */
 362 static void realview_eb11mp_fixup(void)
 363 {
 364         /* AMBA devices */
 365         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 366         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 367         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 368         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 369         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 370         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 371         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 372         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 373         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 374         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 375         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 376         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 377         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 378         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 379         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 380         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 381         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 382         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 383
 384         /* platform devices */
 385         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
 386         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
 387         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
 388         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
 389 }
 390
 391 static void __init realview_eb_timer_init(void)
 392 {
 393         unsigned int timer_irq;
 394
 395         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
 396         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
 397         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 398         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 399
 400         if (core_tile_eb11mp() || core_tile_a9mp()) {
 401 #ifdef CONFIG_LOCAL_TIMERS
 402                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
 403 #endif
 404                 timer_irq = IRQ_EB11MP_TIMER0_1;
 405         } else
 406                 timer_irq = IRQ_EB_TIMER0_1;
 407
 408         realview_timer_init(timer_irq);
 409 }
 410
 411 static struct sys_timer realview_eb_timer = {
 412         .init           = realview_eb_timer_init,
 413 };
 414
 415 static void realview_eb_restart(char mode, const char *cmd)
 416 {
 417         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 418         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 419
 420         /*
 421          * To reset, we hit the on-board reset register
 422          * in the system FPGA
 423          */
 424         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 425         if (core_tile_eb11mp())
 426                 __raw_writel(0x0008, reset_ctrl);
 427         dsb();
 428 }
 429
 430 static void __init realview_eb_init(void)
 431 {
 432         int i;
 433
 434         if (core_tile_eb11mp() || core_tile_a9mp()) {
 435                 realview_eb11mp_fixup();
 436
 437 #ifdef CONFIG_CACHE_L2X0
 438                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 439                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 440                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 441 #endif
 442                 platform_device_register(&pmu_device);
 443         }
 444
 445         realview_flash_register(&realview_eb_flash_resource, 1);
 446         platform_device_register(&realview_i2c_device);
 447         platform_device_register(&char_lcd_device);
 448         eth_device_register();
 449         realview_usb_register(realview_eb_isp1761_resources);
 450
 451         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 452                 struct amba_device *d = amba_devs[i];
 453                 amba_device_register(d, &iomem_resource);
 454         }
 455
 456 #ifdef CONFIG_LEDS
 457         leds_event = realview_leds_event;
 458 #endif
 459 }
 460
 461 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 462         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 463         .atag_offset    = 0x100,
 464         .fixup          = realview_fixup,
 465         .map_io         = realview_eb_map_io,
 466         .init_early     = realview_init_early,
 467         .init_irq       = gic_init_irq,
 468         .timer          = &realview_eb_timer,
 469         .handle_irq     = gic_handle_irq,
 470         .init_machine   = realview_eb_init,
 471 #ifdef CONFIG_ZONE_DMA
 472         .dma_zone_size  = SZ_256M,
 473 #endif
 474         .restart        = realview_eb_restart,
 475 MACHINE_END