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 #include <linux/platform_data/clk-realview.h>
  31
  32 #include <mach/hardware.h>
  33 #include <asm/irq.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/pgtable.h>
  36 #include <asm/hardware/gic.h>
  37 #include <asm/hardware/cache-l2x0.h>
  38 #include <asm/smp_twd.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/time.h>
  43
  44 #include <mach/board-eb.h>
  45 #include <mach/irqs.h>
  46
  47 #include "core.h"
  48
  49 static struct map_desc realview_eb_io_desc[] __initdata = {
  50         {
  51                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  52                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  53                 .length         = SZ_4K,
  54                 .type           = MT_DEVICE,
  55         }, {
  56                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE),
  57                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
  58                 .length         = SZ_4K,
  59                 .type           = MT_DEVICE,
  60         }, {
  61                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
  62                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE),
  63                 .length         = SZ_4K,
  64                 .type           = MT_DEVICE,
  65         }, {
  66                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  67                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  68                 .length         = SZ_4K,
  69                 .type           = MT_DEVICE,
  70         }, {
  71                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE),
  72                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
  73                 .length         = SZ_4K,
  74                 .type           = MT_DEVICE,
  75         }, {
  76                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
  77                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
  78                 .length         = SZ_4K,
  79                 .type           = MT_DEVICE,
  80         },
  81 #ifdef CONFIG_DEBUG_LL
  82         {
  83                 .virtual        = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
  84                 .pfn            = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
  85                 .length         = SZ_4K,
  86                 .type           = MT_DEVICE,
  87         }
  88 #endif
  89 };
  90
  91 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
  92         {
  93                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_PRIV_MEM_BASE),
  94                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_PRIV_MEM_BASE),
  95                 .length         = REALVIEW_EB11MP_PRIV_MEM_SIZE,
  96                 .type           = MT_DEVICE,
  97         }, {
  98                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
  99                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
 100                 .length         = SZ_8K,
 101                 .type           = MT_DEVICE,
 102         }
 103 };
 104
 105 static void __init realview_eb_map_io(void)
 106 {
 107         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
 108         if (core_tile_eb11mp() || core_tile_a9mp())
 109                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
 110 }
 111
 112 static struct pl061_platform_data gpio0_plat_data = {
 113         .gpio_base      = 0,
 114 };
 115
 116 static struct pl061_platform_data gpio1_plat_data = {
 117         .gpio_base      = 8,
 118 };
 119
 120 static struct pl061_platform_data gpio2_plat_data = {
 121         .gpio_base      = 16,
 122 };
 123
 124 static struct pl022_ssp_controller ssp0_plat_data = {
 125         .bus_id = 0,
 126         .enable_dma = 0,
 127         .num_chipselect = 1,
 128 };
 129
 130 /*
 131  * RealView EB AMBA devices
 132  */
 133
 134 /*
 135  * These devices are connected via the core APB bridge
 136  */
 137 #define GPIO2_IRQ       { IRQ_EB_GPIO2 }
 138 #define GPIO3_IRQ       { IRQ_EB_GPIO3 }
 139
 140 #define AACI_IRQ        { IRQ_EB_AACI }
 141 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 142 #define KMI0_IRQ        { IRQ_EB_KMI0 }
 143 #define KMI1_IRQ        { IRQ_EB_KMI1 }
 144
 145 /*
 146  * These devices are connected directly to the multi-layer AHB switch
 147  */
 148 #define EB_SMC_IRQ      { }
 149 #define MPMC_IRQ        { }
 150 #define EB_CLCD_IRQ     { IRQ_EB_CLCD }
 151 #define DMAC_IRQ        { IRQ_EB_DMA }
 152
 153 /*
 154  * These devices are connected via the core APB bridge
 155  */
 156 #define SCTL_IRQ        { }
 157 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG }
 158 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0 }
 159 #define GPIO1_IRQ       { IRQ_EB_GPIO1 }
 160 #define EB_RTC_IRQ      { IRQ_EB_RTC }
 161
 162 /*
 163  * These devices are connected via the DMA APB bridge
 164  */
 165 #define SCI_IRQ         { IRQ_EB_SCI }
 166 #define EB_UART0_IRQ    { IRQ_EB_UART0 }
 167 #define EB_UART1_IRQ    { IRQ_EB_UART1 }
 168 #define EB_UART2_IRQ    { IRQ_EB_UART2 }
 169 #define EB_UART3_IRQ    { IRQ_EB_UART3 }
 170 #define EB_SSP_IRQ      { IRQ_EB_SSP }
 171
 172 /* FPGA Primecells */
 173 APB_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
 174 APB_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
 175 APB_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
 176 APB_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
 177 APB_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
 178
 179 /* DevChip Primecells */
 180 AHB_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
 181 AHB_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
 182 AHB_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
 183 AHB_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
 184 APB_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
 185 APB_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
 186 APB_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
 187 APB_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
 188 APB_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
 189 APB_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
 190 APB_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
 191 APB_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
 192 APB_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
 193 APB_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   &ssp0_plat_data);
 194
 195 static struct amba_device *amba_devs[] __initdata = {
 196         &dmac_device,
 197         &uart0_device,
 198         &uart1_device,
 199         &uart2_device,
 200         &uart3_device,
 201         &smc_device,
 202         &clcd_device,
 203         &sctl_device,
 204         &wdog_device,
 205         &gpio0_device,
 206         &gpio1_device,
 207         &gpio2_device,
 208         &rtc_device,
 209         &sci0_device,
 210         &ssp0_device,
 211         &aaci_device,
 212         &mmc0_device,
 213         &kmi0_device,
 214         &kmi1_device,
 215 };
 216
 217 /*
 218  * RealView EB platform devices
 219  */
 220 static struct resource realview_eb_flash_resource = {
 221         .start                  = REALVIEW_EB_FLASH_BASE,
 222         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
 223         .flags                  = IORESOURCE_MEM,
 224 };
 225
 226 static struct resource realview_eb_eth_resources[] = {
 227         [0] = {
 228                 .start          = REALVIEW_EB_ETH_BASE,
 229                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
 230                 .flags          = IORESOURCE_MEM,
 231         },
 232         [1] = {
 233                 .start          = IRQ_EB_ETH,
 234                 .end            = IRQ_EB_ETH,
 235                 .flags          = IORESOURCE_IRQ,
 236         },
 237 };
 238
 239 /*
 240  * Detect and register the correct Ethernet device. RealView/EB rev D
 241  * platforms use the newer SMSC LAN9118 Ethernet chip
 242  */
 243 static int eth_device_register(void)
 244 {
 245         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
 246         const char *name = NULL;
 247         u32 idrev;
 248
 249         if (!eth_addr)
 250                 return -ENOMEM;
 251
 252         idrev = readl(eth_addr + 0x50);
 253         if ((idrev & 0xFFFF0000) != 0x01180000)
 254                 /* SMSC LAN9118 not present, use LAN91C111 instead */
 255                 name = "smc91x";
 256
 257         iounmap(eth_addr);
 258         return realview_eth_register(name, realview_eb_eth_resources);
 259 }
 260
 261 static struct resource realview_eb_isp1761_resources[] = {
 262         [0] = {
 263                 .start          = REALVIEW_EB_USB_BASE,
 264                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
 265                 .flags          = IORESOURCE_MEM,
 266         },
 267         [1] = {
 268                 .start          = IRQ_EB_USB,
 269                 .end            = IRQ_EB_USB,
 270                 .flags          = IORESOURCE_IRQ,
 271         },
 272 };
 273
 274 static struct resource pmu_resources[] = {
 275         [0] = {
 276                 .start          = IRQ_EB11MP_PMU_CPU0,
 277                 .end            = IRQ_EB11MP_PMU_CPU0,
 278                 .flags          = IORESOURCE_IRQ,
 279         },
 280         [1] = {
 281                 .start          = IRQ_EB11MP_PMU_CPU1,
 282                 .end            = IRQ_EB11MP_PMU_CPU1,
 283                 .flags          = IORESOURCE_IRQ,
 284         },
 285         [2] = {
 286                 .start          = IRQ_EB11MP_PMU_CPU2,
 287                 .end            = IRQ_EB11MP_PMU_CPU2,
 288                 .flags          = IORESOURCE_IRQ,
 289         },
 290         [3] = {
 291                 .start          = IRQ_EB11MP_PMU_CPU3,
 292                 .end            = IRQ_EB11MP_PMU_CPU3,
 293                 .flags          = IORESOURCE_IRQ,
 294         },
 295 };
 296
 297 static struct platform_device pmu_device = {
 298         .name                   = "arm-pmu",
 299         .id                     = -1,
 300         .num_resources          = ARRAY_SIZE(pmu_resources),
 301         .resource               = pmu_resources,
 302 };
 303
 304 static struct resource char_lcd_resources[] = {
 305         {
 306                 .start = REALVIEW_CHAR_LCD_BASE,
 307                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 308                 .flags = IORESOURCE_MEM,
 309         },
 310         {
 311                 .start  = IRQ_EB_CHARLCD,
 312                 .end    = IRQ_EB_CHARLCD,
 313                 .flags  = IORESOURCE_IRQ,
 314         },
 315 };
 316
 317 static struct platform_device char_lcd_device = {
 318         .name           =       "arm-charlcd",
 319         .id             =       -1,
 320         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 321         .resource       =       char_lcd_resources,
 322 };
 323
 324 static void __init gic_init_irq(void)
 325 {
 326         if (core_tile_eb11mp() || core_tile_a9mp()) {
 327                 unsigned int pldctrl;
 328
 329                 /* new irq mode */
 330                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 331                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 332                 pldctrl |= 0x00800000;
 333                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 334                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 335
 336                 /* core tile GIC, primary */
 337                 gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
 338                          __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
 339
 340 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 341                 /* board GIC, secondary */
 342                 gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
 343                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
 344                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 345 #endif
 346         } else {
 347                 /* board GIC, primary */
 348                 gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
 349                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
 350         }
 351 }
 352
 353 /*
 354  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 355  */
 356 static void realview_eb11mp_fixup(void)
 357 {
 358         /* AMBA devices */
 359         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 360         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 361         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 362         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 363         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 364         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 365         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 366         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 367         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 368         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 369         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 370         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 371         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 372         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 373         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 374         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 375         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 376         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 377
 378         /* platform devices */
 379         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
 380         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
 381         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
 382         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
 383 }
 384
 385 #ifdef CONFIG_HAVE_ARM_TWD
 386 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
 387                               REALVIEW_EB11MP_TWD_BASE,
 388                               IRQ_LOCALTIMER);
 389
 390 static void __init realview_eb_twd_init(void)
 391 {
 392         if (core_tile_eb11mp() || core_tile_a9mp()) {
 393                 int err = twd_local_timer_register(&twd_local_timer);
 394                 if (err)
 395                         pr_err("twd_local_timer_register failed %d\n", err);
 396         }
 397 }
 398 #else
 399 #define realview_eb_twd_init()  do { } while(0)
 400 #endif
 401
 402 static void __init realview_eb_timer_init(void)
 403 {
 404         unsigned int timer_irq;
 405
 406         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
 407         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
 408         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 409         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 410
 411         if (core_tile_eb11mp() || core_tile_a9mp())
 412                 timer_irq = IRQ_EB11MP_TIMER0_1;
 413         else
 414                 timer_irq = IRQ_EB_TIMER0_1;
 415
 416         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 417         realview_timer_init(timer_irq);
 418         realview_eb_twd_init();
 419 }
 420
 421 static struct sys_timer realview_eb_timer = {
 422         .init           = realview_eb_timer_init,
 423 };
 424
 425 static void realview_eb_restart(char mode, const char *cmd)
 426 {
 427         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 428         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 429
 430         /*
 431          * To reset, we hit the on-board reset register
 432          * in the system FPGA
 433          */
 434         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 435         if (core_tile_eb11mp())
 436                 __raw_writel(0x0008, reset_ctrl);
 437         dsb();
 438 }
 439
 440 static void __init realview_eb_init(void)
 441 {
 442         int i;
 443
 444         if (core_tile_eb11mp() || core_tile_a9mp()) {
 445                 realview_eb11mp_fixup();
 446
 447 #ifdef CONFIG_CACHE_L2X0
 448                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 449                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 450                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 451 #endif
 452                 platform_device_register(&pmu_device);
 453         }
 454
 455         realview_flash_register(&realview_eb_flash_resource, 1);
 456         platform_device_register(&realview_i2c_device);
 457         platform_device_register(&char_lcd_device);
 458         eth_device_register();
 459         realview_usb_register(realview_eb_isp1761_resources);
 460
 461         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 462                 struct amba_device *d = amba_devs[i];
 463                 amba_device_register(d, &iomem_resource);
 464         }
 465 }
 466
 467 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 468         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 469         .atag_offset    = 0x100,
 470         .fixup          = realview_fixup,
 471         .map_io         = realview_eb_map_io,
 472         .init_early     = realview_init_early,
 473         .init_irq       = gic_init_irq,
 474         .timer          = &realview_eb_timer,
 475         .handle_irq     = gic_handle_irq,
 476         .init_machine   = realview_eb_init,
 477 #ifdef CONFIG_ZONE_DMA
 478         .dma_zone_size  = SZ_256M,
 479 #endif
 480         .restart        = realview_eb_restart,
 481 MACHINE_END