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/io.h>
  29
  30 #include <mach/hardware.h>
  31 #include <asm/irq.h>
  32 #include <asm/leds.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/pmu.h>
  35 #include <asm/hardware/gic.h>
  36 #include <asm/hardware/cache-l2x0.h>
  37 #include <asm/localtimer.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/time.h>
  42
  43 #include <mach/board-eb.h>
  44 #include <mach/irqs.h>
  45
  46 #include "core.h"
  47
  48 static struct map_desc realview_eb_io_desc[] __initdata = {
  49         {
  50                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  51                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  52                 .length         = SZ_4K,
  53                 .type           = MT_DEVICE,
  54         }, {
  55                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE),
  56                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
  57                 .length         = SZ_4K,
  58                 .type           = MT_DEVICE,
  59         }, {
  60                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
  61                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE),
  62                 .length         = SZ_4K,
  63                 .type           = MT_DEVICE,
  64         }, {
  65                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  66                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  67                 .length         = SZ_4K,
  68                 .type           = MT_DEVICE,
  69         }, {
  70                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE),
  71                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
  72                 .length         = SZ_4K,
  73                 .type           = MT_DEVICE,
  74         }, {
  75                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
  76                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
  77                 .length         = SZ_4K,
  78                 .type           = MT_DEVICE,
  79         },
  80 #ifdef CONFIG_DEBUG_LL
  81         {
  82                 .virtual        = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
  83                 .pfn            = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
  84                 .length         = SZ_4K,
  85                 .type           = MT_DEVICE,
  86         }
  87 #endif
  88 };
  89
  90 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
  91         {
  92                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
  93                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
  94                 .length         = SZ_4K,
  95                 .type           = MT_DEVICE,
  96         }, {
  97                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
  98                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
  99                 .length         = SZ_4K,
 100                 .type           = MT_DEVICE,
 101         }, {
 102                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
 103                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
 104                 .length         = SZ_8K,
 105                 .type           = MT_DEVICE,
 106         }
 107 };
 108
 109 static void __init realview_eb_map_io(void)
 110 {
 111         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
 112         if (core_tile_eb11mp() || core_tile_a9mp())
 113                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
 114 }
 115
 116 static struct pl061_platform_data gpio0_plat_data = {
 117         .gpio_base      = 0,
 118         .irq_base       = -1,
 119 };
 120
 121 static struct pl061_platform_data gpio1_plat_data = {
 122         .gpio_base      = 8,
 123         .irq_base       = -1,
 124 };
 125
 126 static struct pl061_platform_data gpio2_plat_data = {
 127         .gpio_base      = 16,
 128         .irq_base       = -1,
 129 };
 130
 131 /*
 132  * RealView EB AMBA devices
 133  */
 134
 135 /*
 136  * These devices are connected via the core APB bridge
 137  */
 138 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
 139 #define GPIO2_DMA       { 0, 0 }
 140 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
 141 #define GPIO3_DMA       { 0, 0 }
 142
 143 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
 144 #define AACI_DMA        { 0x80, 0x81 }
 145 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 146 #define MMCI0_DMA       { 0x84, 0 }
 147 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
 148 #define KMI0_DMA        { 0, 0 }
 149 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
 150 #define KMI1_DMA        { 0, 0 }
 151
 152 /*
 153  * These devices are connected directly to the multi-layer AHB switch
 154  */
 155 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
 156 #define EB_SMC_DMA      { 0, 0 }
 157 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 158 #define MPMC_DMA        { 0, 0 }
 159 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
 160 #define EB_CLCD_DMA     { 0, 0 }
 161 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
 162 #define DMAC_DMA        { 0, 0 }
 163
 164 /*
 165  * These devices are connected via the core APB bridge
 166  */
 167 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 168 #define SCTL_DMA        { 0, 0 }
 169 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
 170 #define EB_WATCHDOG_DMA { 0, 0 }
 171 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
 172 #define EB_GPIO0_DMA    { 0, 0 }
 173 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 174 #define GPIO1_DMA       { 0, 0 }
 175 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
 176 #define EB_RTC_DMA      { 0, 0 }
 177
 178 /*
 179  * These devices are connected via the DMA APB bridge
 180  */
 181 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
 182 #define SCI_DMA         { 7, 6 }
 183 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
 184 #define EB_UART0_DMA    { 15, 14 }
 185 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
 186 #define EB_UART1_DMA    { 13, 12 }
 187 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
 188 #define EB_UART2_DMA    { 11, 10 }
 189 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
 190 #define EB_UART3_DMA    { 0x86, 0x87 }
 191 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
 192 #define EB_SSP_DMA      { 9, 8 }
 193
 194 /* FPGA Primecells */
 195 AMBA_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
 196 AMBA_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
 197 AMBA_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
 198 AMBA_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
 199 AMBA_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
 200
 201 /* DevChip Primecells */
 202 AMBA_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
 203 AMBA_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
 204 AMBA_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
 205 AMBA_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
 206 AMBA_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
 207 AMBA_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
 208 AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
 209 AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
 210 AMBA_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
 211 AMBA_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
 212 AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
 213 AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
 214 AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
 215 AMBA_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   NULL);
 216
 217 static struct amba_device *amba_devs[] __initdata = {
 218         &dmac_device,
 219         &uart0_device,
 220         &uart1_device,
 221         &uart2_device,
 222         &uart3_device,
 223         &smc_device,
 224         &clcd_device,
 225         &sctl_device,
 226         &wdog_device,
 227         &gpio0_device,
 228         &gpio1_device,
 229         &gpio2_device,
 230         &rtc_device,
 231         &sci0_device,
 232         &ssp0_device,
 233         &aaci_device,
 234         &mmc0_device,
 235         &kmi0_device,
 236         &kmi1_device,
 237 };
 238
 239 /*
 240  * RealView EB platform devices
 241  */
 242 static struct resource realview_eb_flash_resource = {
 243         .start                  = REALVIEW_EB_FLASH_BASE,
 244         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
 245         .flags                  = IORESOURCE_MEM,
 246 };
 247
 248 static struct resource realview_eb_eth_resources[] = {
 249         [0] = {
 250                 .start          = REALVIEW_EB_ETH_BASE,
 251                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
 252                 .flags          = IORESOURCE_MEM,
 253         },
 254         [1] = {
 255                 .start          = IRQ_EB_ETH,
 256                 .end            = IRQ_EB_ETH,
 257                 .flags          = IORESOURCE_IRQ,
 258         },
 259 };
 260
 261 /*
 262  * Detect and register the correct Ethernet device. RealView/EB rev D
 263  * platforms use the newer SMSC LAN9118 Ethernet chip
 264  */
 265 static int eth_device_register(void)
 266 {
 267         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
 268         const char *name = NULL;
 269         u32 idrev;
 270
 271         if (!eth_addr)
 272                 return -ENOMEM;
 273
 274         idrev = readl(eth_addr + 0x50);
 275         if ((idrev & 0xFFFF0000) != 0x01180000)
 276                 /* SMSC LAN9118 not present, use LAN91C111 instead */
 277                 name = "smc91x";
 278
 279         iounmap(eth_addr);
 280         return realview_eth_register(name, realview_eb_eth_resources);
 281 }
 282
 283 static struct resource realview_eb_isp1761_resources[] = {
 284         [0] = {
 285                 .start          = REALVIEW_EB_USB_BASE,
 286                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
 287                 .flags          = IORESOURCE_MEM,
 288         },
 289         [1] = {
 290                 .start          = IRQ_EB_USB,
 291                 .end            = IRQ_EB_USB,
 292                 .flags          = IORESOURCE_IRQ,
 293         },
 294 };
 295
 296 static struct resource pmu_resources[] = {
 297         [0] = {
 298                 .start          = IRQ_EB11MP_PMU_CPU0,
 299                 .end            = IRQ_EB11MP_PMU_CPU0,
 300                 .flags          = IORESOURCE_IRQ,
 301         },
 302         [1] = {
 303                 .start          = IRQ_EB11MP_PMU_CPU1,
 304                 .end            = IRQ_EB11MP_PMU_CPU1,
 305                 .flags          = IORESOURCE_IRQ,
 306         },
 307         [2] = {
 308                 .start          = IRQ_EB11MP_PMU_CPU2,
 309                 .end            = IRQ_EB11MP_PMU_CPU2,
 310                 .flags          = IORESOURCE_IRQ,
 311         },
 312         [3] = {
 313                 .start          = IRQ_EB11MP_PMU_CPU3,
 314                 .end            = IRQ_EB11MP_PMU_CPU3,
 315                 .flags          = IORESOURCE_IRQ,
 316         },
 317 };
 318
 319 static struct platform_device pmu_device = {
 320         .name                   = "arm-pmu",
 321         .id                     = ARM_PMU_DEVICE_CPU,
 322         .num_resources          = ARRAY_SIZE(pmu_resources),
 323         .resource               = pmu_resources,
 324 };
 325
 326 static void __init gic_init_irq(void)
 327 {
 328         if (core_tile_eb11mp() || core_tile_a9mp()) {
 329                 unsigned int pldctrl;
 330
 331                 /* new irq mode */
 332                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 333                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 334                 pldctrl |= 0x00800000;
 335                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 336                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 337
 338                 /* core tile GIC, primary */
 339                 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
 340                 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
 341                 gic_cpu_init(0, gic_cpu_base_addr);
 342
 343 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 344                 /* board GIC, secondary */
 345                 gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
 346                 gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
 347                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 348 #endif
 349         } else {
 350                 /* board GIC, primary */
 351                 gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
 352                 gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
 353                 gic_cpu_init(0, gic_cpu_base_addr);
 354         }
 355 }
 356
 357 /*
 358  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 359  */
 360 static void realview_eb11mp_fixup(void)
 361 {
 362         /* AMBA devices */
 363         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 364         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 365         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 366         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 367         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 368         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 369         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 370         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 371         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 372         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 373         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 374         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 375         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 376         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 377         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 378         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 379         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 380         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 381
 382         /* platform devices */
 383         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
 384         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
 385         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
 386         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
 387 }
 388
 389 static void __init realview_eb_timer_init(void)
 390 {
 391         unsigned int timer_irq;
 392
 393         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
 394         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
 395         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 396         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 397
 398         if (core_tile_eb11mp() || core_tile_a9mp()) {
 399 #ifdef CONFIG_LOCAL_TIMERS
 400                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
 401 #endif
 402                 timer_irq = IRQ_EB11MP_TIMER0_1;
 403         } else
 404                 timer_irq = IRQ_EB_TIMER0_1;
 405
 406         realview_timer_init(timer_irq);
 407 }
 408
 409 static struct sys_timer realview_eb_timer = {
 410         .init           = realview_eb_timer_init,
 411 };
 412
 413 static void realview_eb_reset(char mode)
 414 {
 415         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 416         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 417
 418         /*
 419          * To reset, we hit the on-board reset register
 420          * in the system FPGA
 421          */
 422         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 423         if (core_tile_eb11mp())
 424                 __raw_writel(0x0008, reset_ctrl);
 425 }
 426
 427 static void __init realview_eb_init(void)
 428 {
 429         int i;
 430
 431         if (core_tile_eb11mp() || core_tile_a9mp()) {
 432                 realview_eb11mp_fixup();
 433
 434 #ifdef CONFIG_CACHE_L2X0
 435                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 436                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 437                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 438 #endif
 439                 platform_device_register(&pmu_device);
 440         }
 441
 442         realview_flash_register(&realview_eb_flash_resource, 1);
 443         platform_device_register(&realview_i2c_device);
 444         eth_device_register();
 445         realview_usb_register(realview_eb_isp1761_resources);
 446
 447         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 448                 struct amba_device *d = amba_devs[i];
 449                 amba_device_register(d, &iomem_resource);
 450         }
 451
 452 #ifdef CONFIG_LEDS
 453         leds_event = realview_leds_event;
 454 #endif
 455         realview_reset = realview_eb_reset;
 456 }
 457
 458 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 459         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 460         .phys_io        = REALVIEW_EB_UART0_BASE,
 461         .io_pg_offst    = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
 462         .boot_params    = PHYS_OFFSET + 0x00000100,
 463         .fixup          = realview_fixup,
 464         .map_io         = realview_eb_map_io,
 465         .init_irq       = gic_init_irq,
 466         .timer          = &realview_eb_timer,
 467         .init_machine   = realview_eb_init,
 468 MACHINE_END