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 GPIO3_IRQ       { IRQ_PB1176_GPIO3, NO_IRQ }
 138 #define AACI_IRQ        { IRQ_PB1176_AACI, NO_IRQ }
 139 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
 140 #define KMI0_IRQ        { IRQ_PB1176_KMI0, NO_IRQ }
 141 #define KMI1_IRQ        { IRQ_PB1176_KMI1, NO_IRQ }
 142 #define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
 143 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 144 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
 145 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 146 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
 147 #define PB1176_GPIO0_IRQ        { IRQ_PB1176_GPIO0, NO_IRQ }
 148 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1, NO_IRQ }
 149 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
 150 #define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
 151 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0, NO_IRQ }
 152 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1, NO_IRQ }
 153 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2, NO_IRQ }
 154 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
 155 #define PB1176_UART4_IRQ        { IRQ_PB1176_UART4, NO_IRQ }
 156 #define PB1176_SSP_IRQ          { IRQ_DC1176_SSP, NO_IRQ }
 157
 158 /* FPGA Primecells */
 159 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 160 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 161 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 162 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 163 AMBA_DEVICE(uart4,      "fpga:uart4",   PB1176_UART4,   NULL);
 164
 165 /* DevChip Primecells */
 166 AMBA_DEVICE(smc,        "dev:smc",      PB1176_SMC,     NULL);
 167 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 168 AMBA_DEVICE(wdog,       "dev:wdog",     PB1176_WATCHDOG,        NULL);
 169 AMBA_DEVICE(gpio0,      "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
 170 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 171 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 172 AMBA_DEVICE(rtc,        "dev:rtc",      PB1176_RTC,     NULL);
 173 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 174 AMBA_DEVICE(uart0,      "dev:uart0",    PB1176_UART0,   NULL);
 175 AMBA_DEVICE(uart1,      "dev:uart1",    PB1176_UART1,   NULL);
 176 AMBA_DEVICE(uart2,      "dev:uart2",    PB1176_UART2,   NULL);
 177 AMBA_DEVICE(uart3,      "dev:uart3",    PB1176_UART3,   NULL);
 178 AMBA_DEVICE(ssp0,       "dev:ssp0",     PB1176_SSP,     &ssp0_plat_data);
 179 AMBA_DEVICE(clcd,       "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
 180
 181 static struct amba_device *amba_devs[] __initdata = {
 182         &uart0_device,
 183         &uart1_device,
 184         &uart2_device,
 185         &uart3_device,
 186         &uart4_device,
 187         &smc_device,
 188         &clcd_device,
 189         &sctl_device,
 190         &wdog_device,
 191         &gpio0_device,
 192         &gpio1_device,
 193         &gpio2_device,
 194         &rtc_device,
 195         &sci0_device,
 196         &ssp0_device,
 197         &aaci_device,
 198         &mmc0_device,
 199         &kmi0_device,
 200         &kmi1_device,
 201 };
 202
 203 /*
 204  * RealView PB1176 platform devices
 205  */
 206 static struct resource realview_pb1176_flash_resources[] = {
 207         [0] = {
 208                 .start          = REALVIEW_PB1176_FLASH_BASE,
 209                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
 210                 .flags          = IORESOURCE_MEM,
 211         },
 212         [1] = {
 213                 .start          = REALVIEW_PB1176_SEC_FLASH_BASE,
 214                 .end            = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
 215                 .flags          = IORESOURCE_MEM,
 216         },
 217 };
 218 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
 219 #define PB1176_FLASH_BLOCKS     2
 220 #else
 221 #define PB1176_FLASH_BLOCKS     1
 222 #endif
 223
 224 static struct resource realview_pb1176_smsc911x_resources[] = {
 225         [0] = {
 226                 .start          = REALVIEW_PB1176_ETH_BASE,
 227                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
 228                 .flags          = IORESOURCE_MEM,
 229         },
 230         [1] = {
 231                 .start          = IRQ_PB1176_ETH,
 232                 .end            = IRQ_PB1176_ETH,
 233                 .flags          = IORESOURCE_IRQ,
 234         },
 235 };
 236
 237 static struct resource realview_pb1176_isp1761_resources[] = {
 238         [0] = {
 239                 .start          = REALVIEW_PB1176_USB_BASE,
 240                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
 241                 .flags          = IORESOURCE_MEM,
 242         },
 243         [1] = {
 244                 .start          = IRQ_PB1176_USB,
 245                 .end            = IRQ_PB1176_USB,
 246                 .flags          = IORESOURCE_IRQ,
 247         },
 248 };
 249
 250 static struct resource pmu_resource = {
 251         .start          = IRQ_DC1176_CORE_PMU,
 252         .end            = IRQ_DC1176_CORE_PMU,
 253         .flags          = IORESOURCE_IRQ,
 254 };
 255
 256 static struct platform_device pmu_device = {
 257         .name                   = "arm-pmu",
 258         .id                     = ARM_PMU_DEVICE_CPU,
 259         .num_resources          = 1,
 260         .resource               = &pmu_resource,
 261 };
 262
 263 static struct resource char_lcd_resources[] = {
 264         {
 265                 .start = REALVIEW_CHAR_LCD_BASE,
 266                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 267                 .flags = IORESOURCE_MEM,
 268         },
 269         {
 270                 .start  = IRQ_PB1176_CHARLCD,
 271                 .end    = IRQ_PB1176_CHARLCD,
 272                 .flags  = IORESOURCE_IRQ,
 273         },
 274 };
 275
 276 static struct platform_device char_lcd_device = {
 277         .name           =       "arm-charlcd",
 278         .id             =       -1,
 279         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 280         .resource       =       char_lcd_resources,
 281 };
 282
 283 static void __init gic_init_irq(void)
 284 {
 285         /* ARM1176 DevChip GIC, primary */
 286         gic_init(0, IRQ_DC1176_GIC_START,
 287                  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
 288                  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
 289
 290         /* board GIC, secondary */
 291         gic_init(1, IRQ_PB1176_GIC_START,
 292                  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
 293                  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 294         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 295 }
 296
 297 static void __init realview_pb1176_timer_init(void)
 298 {
 299         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
 300         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
 301         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 302         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 303
 304         realview_timer_init(IRQ_DC1176_TIMER0);
 305 }
 306
 307 static struct sys_timer realview_pb1176_timer = {
 308         .init           = realview_pb1176_timer_init,
 309 };
 310
 311 static void realview_pb1176_reset(char mode)
 312 {
 313         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 314         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 315         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 316         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
 317 }
 318
 319 static void realview_pb1176_fixup(struct machine_desc *mdesc,
 320                                   struct tag *tags, char **from,
 321                                   struct meminfo *meminfo)
 322 {
 323         /*
 324          * RealView PB1176 only has 128MB of RAM mapped at 0.
 325          */
 326         meminfo->bank[0].start = 0;
 327         meminfo->bank[0].size = SZ_128M;
 328         meminfo->nr_banks = 1;
 329 }
 330
 331 static void __init realview_pb1176_init(void)
 332 {
 333         int i;
 334
 335 #ifdef CONFIG_CACHE_L2X0
 336         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
 337         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
 338 #endif
 339
 340         realview_flash_register(realview_pb1176_flash_resources,
 341                                 PB1176_FLASH_BLOCKS);
 342         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
 343         platform_device_register(&realview_i2c_device);
 344         realview_usb_register(realview_pb1176_isp1761_resources);
 345         platform_device_register(&pmu_device);
 346         platform_device_register(&char_lcd_device);
 347
 348         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 349                 struct amba_device *d = amba_devs[i];
 350                 amba_device_register(d, &iomem_resource);
 351         }
 352
 353 #ifdef CONFIG_LEDS
 354         leds_event = realview_leds_event;
 355 #endif
 356         realview_reset = realview_pb1176_reset;
 357 }
 358
 359 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 360         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 361         .boot_params    = PLAT_PHYS_OFFSET + 0x00000100,
 362         .fixup          = realview_pb1176_fixup,
 363         .map_io         = realview_pb1176_map_io,
 364         .init_early     = realview_init_early,
 365         .init_irq       = gic_init_irq,
 366         .timer          = &realview_pb1176_timer,
 367         .init_machine   = realview_pb1176_init,
 368 #ifdef CONFIG_ZONE_DMA
 369         .dma_zone_size  = SZ_256M,
 370 #endif
 371 MACHINE_END