arch/arm/mach-realview/realview_pb1176.c

   1 /*
   2  *  linux/arch/arm/mach-realview/realview_pb1176.c
   3  *
   4  *  Copyright (C) 2008 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
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/flash.h>
  42 #include <asm/mach/map.h>
  43 #include <asm/mach/time.h>
  44
  45 #include <mach/board-pb1176.h>
  46 #include <mach/irqs.h>
  47
  48 #include "core.h"
  49
  50 static struct map_desc realview_pb1176_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_PB1176_GIC_CPU_BASE),
  58                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
  59                 .length         = SZ_4K,
  60                 .type           = MT_DEVICE,
  61         }, {
  62                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
  63                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
  64                 .length         = SZ_4K,
  65                 .type           = MT_DEVICE,
  66         }, {
  67                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
  68                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
  69                 .length         = SZ_4K,
  70                 .type           = MT_DEVICE,
  71         }, {
  72                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
  73                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
  74                 .length         = SZ_4K,
  75                 .type           = MT_DEVICE,
  76         }, {
  77                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  78                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  79                 .length         = SZ_4K,
  80                 .type           = MT_DEVICE,
  81         }, {
  82                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
  83                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
  84                 .length         = SZ_4K,
  85                 .type           = MT_DEVICE,
  86         }, {
  87                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
  88                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
  89                 .length         = SZ_4K,
  90                 .type           = MT_DEVICE,
  91         }, {
  92                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
  93                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
  94                 .length         = SZ_8K,
  95                 .type           = MT_DEVICE,
  96         },
  97 #ifdef CONFIG_DEBUG_LL
  98         {
  99                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
 100                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
 101                 .length         = SZ_4K,
 102                 .type           = MT_DEVICE,
 103         },
 104 #endif
 105 };
 106
 107 static void __init realview_pb1176_map_io(void)
 108 {
 109         iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
 110 }
 111
 112 static struct pl061_platform_data gpio0_plat_data = {
 113         .gpio_base      = 0,
 114         .irq_base       = -1,
 115 };
 116
 117 static struct pl061_platform_data gpio1_plat_data = {
 118         .gpio_base      = 8,
 119         .irq_base       = -1,
 120 };
 121
 122 static struct pl061_platform_data gpio2_plat_data = {
 123         .gpio_base      = 16,
 124         .irq_base       = -1,
 125 };
 126
 127 static struct pl022_ssp_controller ssp0_plat_data = {
 128         .bus_id = 0,
 129         .enable_dma = 0,
 130         .num_chipselect = 1,
 131 };
 132
 133 /*
 134  * RealView PB1176 AMBA devices
 135  */
 136 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2, NO_IRQ }
 137 #define GPIO2_DMA       { 0, 0 }
 138 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3, NO_IRQ }
 139 #define GPIO3_DMA       { 0, 0 }
 140 #define AACI_IRQ        { IRQ_PB1176_AACI, NO_IRQ }
 141 #define AACI_DMA        { 0x80, 0x81 }
 142 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
 143 #define MMCI0_DMA       { 0x84, 0 }
 144 #define KMI0_IRQ        { IRQ_PB1176_KMI0, NO_IRQ }
 145 #define KMI0_DMA        { 0, 0 }
 146 #define KMI1_IRQ        { IRQ_PB1176_KMI1, NO_IRQ }
 147 #define KMI1_DMA        { 0, 0 }
 148 #define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
 149 #define PB1176_SMC_DMA  { 0, 0 }
 150 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 151 #define MPMC_DMA        { 0, 0 }
 152 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
 153 #define PB1176_CLCD_DMA { 0, 0 }
 154 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 155 #define SCTL_DMA        { 0, 0 }
 156 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
 157 #define PB1176_WATCHDOG_DMA     { 0, 0 }
 158 #define PB1176_GPIO0_IRQ        { IRQ_PB1176_GPIO0, NO_IRQ }
 159 #define PB1176_GPIO0_DMA        { 0, 0 }
 160 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1, NO_IRQ }
 161 #define GPIO1_DMA       { 0, 0 }
 162 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
 163 #define PB1176_RTC_DMA  { 0, 0 }
 164 #define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
 165 #define SCI_DMA         { 7, 6 }
 166 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0, NO_IRQ }
 167 #define PB1176_UART0_DMA        { 15, 14 }
 168 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1, NO_IRQ }
 169 #define PB1176_UART1_DMA        { 13, 12 }
 170 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2, NO_IRQ }
 171 #define PB1176_UART2_DMA        { 11, 10 }
 172 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
 173 #define PB1176_UART3_DMA        { 0x86, 0x87 }
 174 #define PB1176_UART4_IRQ        { IRQ_PB1176_UART4, NO_IRQ }
 175 #define PB1176_UART4_DMA        { 0, 0 }
 176 #define PB1176_SSP_IRQ          { IRQ_DC1176_SSP, NO_IRQ }
 177 #define PB1176_SSP_DMA          { 9, 8 }
 178
 179 /* FPGA Primecells */
 180 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 181 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 182 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 183 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 184 AMBA_DEVICE(uart4,      "fpga:uart4",   PB1176_UART4,   NULL);
 185
 186 /* DevChip Primecells */
 187 AMBA_DEVICE(smc,        "dev:smc",      PB1176_SMC,     NULL);
 188 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 189 AMBA_DEVICE(wdog,       "dev:wdog",     PB1176_WATCHDOG,        NULL);
 190 AMBA_DEVICE(gpio0,      "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
 191 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 192 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 193 AMBA_DEVICE(rtc,        "dev:rtc",      PB1176_RTC,     NULL);
 194 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 195 AMBA_DEVICE(uart0,      "dev:uart0",    PB1176_UART0,   NULL);
 196 AMBA_DEVICE(uart1,      "dev:uart1",    PB1176_UART1,   NULL);
 197 AMBA_DEVICE(uart2,      "dev:uart2",    PB1176_UART2,   NULL);
 198 AMBA_DEVICE(uart3,      "dev:uart3",    PB1176_UART3,   NULL);
 199 AMBA_DEVICE(ssp0,       "dev:ssp0",     PB1176_SSP,     &ssp0_plat_data);
 200 AMBA_DEVICE(clcd,       "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
 201
 202 static struct amba_device *amba_devs[] __initdata = {
 203         &uart0_device,
 204         &uart1_device,
 205         &uart2_device,
 206         &uart3_device,
 207         &uart4_device,
 208         &smc_device,
 209         &clcd_device,
 210         &sctl_device,
 211         &wdog_device,
 212         &gpio0_device,
 213         &gpio1_device,
 214         &gpio2_device,
 215         &rtc_device,
 216         &sci0_device,
 217         &ssp0_device,
 218         &aaci_device,
 219         &mmc0_device,
 220         &kmi0_device,
 221         &kmi1_device,
 222 };
 223
 224 /*
 225  * RealView PB1176 platform devices
 226  */
 227 static struct resource realview_pb1176_flash_resources[] = {
 228         [0] = {
 229                 .start          = REALVIEW_PB1176_FLASH_BASE,
 230                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
 231                 .flags          = IORESOURCE_MEM,
 232         },
 233         [1] = {
 234                 .start          = REALVIEW_PB1176_SEC_FLASH_BASE,
 235                 .end            = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
 236                 .flags          = IORESOURCE_MEM,
 237         },
 238 };
 239 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
 240 #define PB1176_FLASH_BLOCKS     2
 241 #else
 242 #define PB1176_FLASH_BLOCKS     1
 243 #endif
 244
 245 static struct resource realview_pb1176_smsc911x_resources[] = {
 246         [0] = {
 247                 .start          = REALVIEW_PB1176_ETH_BASE,
 248                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
 249                 .flags          = IORESOURCE_MEM,
 250         },
 251         [1] = {
 252                 .start          = IRQ_PB1176_ETH,
 253                 .end            = IRQ_PB1176_ETH,
 254                 .flags          = IORESOURCE_IRQ,
 255         },
 256 };
 257
 258 static struct resource realview_pb1176_isp1761_resources[] = {
 259         [0] = {
 260                 .start          = REALVIEW_PB1176_USB_BASE,
 261                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
 262                 .flags          = IORESOURCE_MEM,
 263         },
 264         [1] = {
 265                 .start          = IRQ_PB1176_USB,
 266                 .end            = IRQ_PB1176_USB,
 267                 .flags          = IORESOURCE_IRQ,
 268         },
 269 };
 270
 271 static struct resource pmu_resource = {
 272         .start          = IRQ_DC1176_CORE_PMU,
 273         .end            = IRQ_DC1176_CORE_PMU,
 274         .flags          = IORESOURCE_IRQ,
 275 };
 276
 277 static struct platform_device pmu_device = {
 278         .name                   = "arm-pmu",
 279         .id                     = ARM_PMU_DEVICE_CPU,
 280         .num_resources          = 1,
 281         .resource               = &pmu_resource,
 282 };
 283
 284 static struct resource char_lcd_resources[] = {
 285         {
 286                 .start = REALVIEW_CHAR_LCD_BASE,
 287                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 288                 .flags = IORESOURCE_MEM,
 289         },
 290         {
 291                 .start  = IRQ_PB1176_CHARLCD,
 292                 .end    = IRQ_PB1176_CHARLCD,
 293                 .flags  = IORESOURCE_IRQ,
 294         },
 295 };
 296
 297 static struct platform_device char_lcd_device = {
 298         .name           =       "arm-charlcd",
 299         .id             =       -1,
 300         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 301         .resource       =       char_lcd_resources,
 302 };
 303
 304 static void __init gic_init_irq(void)
 305 {
 306         /* ARM1176 DevChip GIC, primary */
 307         gic_init(0, IRQ_DC1176_GIC_START,
 308                  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
 309                  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
 310
 311         /* board GIC, secondary */
 312         gic_init(1, IRQ_PB1176_GIC_START,
 313                  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
 314                  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 315         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 316 }
 317
 318 static void __init realview_pb1176_timer_init(void)
 319 {
 320         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
 321         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
 322         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 323         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 324
 325         realview_timer_init(IRQ_DC1176_TIMER0);
 326 }
 327
 328 static struct sys_timer realview_pb1176_timer = {
 329         .init           = realview_pb1176_timer_init,
 330 };
 331
 332 static void realview_pb1176_reset(char mode)
 333 {
 334         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 335         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 336         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 337         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
 338 }
 339
 340 static void realview_pb1176_fixup(struct machine_desc *mdesc,
 341                                   struct tag *tags, char **from,
 342                                   struct meminfo *meminfo)
 343 {
 344         /*
 345          * RealView PB1176 only has 128MB of RAM mapped at 0.
 346          */
 347         meminfo->bank[0].start = 0;
 348         meminfo->bank[0].size = SZ_128M;
 349         meminfo->nr_banks = 1;
 350 }
 351
 352 static void __init realview_pb1176_init(void)
 353 {
 354         int i;
 355
 356 #ifdef CONFIG_CACHE_L2X0
 357         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
 358         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
 359 #endif
 360
 361         realview_flash_register(realview_pb1176_flash_resources,
 362                                 PB1176_FLASH_BLOCKS);
 363         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
 364         platform_device_register(&realview_i2c_device);
 365         realview_usb_register(realview_pb1176_isp1761_resources);
 366         platform_device_register(&pmu_device);
 367         platform_device_register(&char_lcd_device);
 368
 369         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 370                 struct amba_device *d = amba_devs[i];
 371                 amba_device_register(d, &iomem_resource);
 372         }
 373
 374 #ifdef CONFIG_LEDS
 375         leds_event = realview_leds_event;
 376 #endif
 377         realview_reset = realview_pb1176_reset;
 378 }
 379
 380 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 381         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 382         .boot_params    = PHYS_OFFSET + 0x00000100,
 383         .fixup          = realview_pb1176_fixup,
 384         .map_io         = realview_pb1176_map_io,
 385         .init_irq       = gic_init_irq,
 386         .timer          = &realview_pb1176_timer,
 387         .init_machine   = realview_pb1176_init,
 388 MACHINE_END