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/mtd/physmap.h>
  30 #include <linux/mtd/partitions.h>
  31 #include <linux/io.h>
  32
  33 #include <mach/hardware.h>
  34 #include <asm/irq.h>
  35 #include <asm/leds.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/pmu.h>
  38 #include <asm/pgtable.h>
  39 #include <asm/hardware/gic.h>
  40 #include <asm/hardware/cache-l2x0.h>
  41
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/flash.h>
  44 #include <asm/mach/map.h>
  45 #include <asm/mach/time.h>
  46
  47 #include <mach/board-pb1176.h>
  48 #include <mach/irqs.h>
  49
  50 #include "core.h"
  51
  52 static struct map_desc realview_pb1176_io_desc[] __initdata = {
  53         {
  54                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  55                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_CPU_BASE),
  60                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
  61                 .length         = SZ_4K,
  62                 .type           = MT_DEVICE,
  63         }, {
  64                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
  65                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
  66                 .length         = SZ_4K,
  67                 .type           = MT_DEVICE,
  68         }, {
  69                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
  70                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
  71                 .length         = SZ_4K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
  75                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
  76                 .length         = SZ_4K,
  77                 .type           = MT_DEVICE,
  78         }, {
  79                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  80                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  81                 .length         = SZ_4K,
  82                 .type           = MT_DEVICE,
  83         }, {
  84                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
  85                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
  86                 .length         = SZ_4K,
  87                 .type           = MT_DEVICE,
  88         }, {
  89                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
  90                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
  91                 .length         = SZ_4K,
  92                 .type           = MT_DEVICE,
  93         }, {
  94                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
  95                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
  96                 .length         = SZ_8K,
  97                 .type           = MT_DEVICE,
  98         },
  99 #ifdef CONFIG_DEBUG_LL
 100         {
 101                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
 102                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
 103                 .length         = SZ_4K,
 104                 .type           = MT_DEVICE,
 105         },
 106 #endif
 107 };
 108
 109 static void __init realview_pb1176_map_io(void)
 110 {
 111         iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
 112 }
 113
 114 static struct pl061_platform_data gpio0_plat_data = {
 115         .gpio_base      = 0,
 116         .irq_base       = -1,
 117 };
 118
 119 static struct pl061_platform_data gpio1_plat_data = {
 120         .gpio_base      = 8,
 121         .irq_base       = -1,
 122 };
 123
 124 static struct pl061_platform_data gpio2_plat_data = {
 125         .gpio_base      = 16,
 126         .irq_base       = -1,
 127 };
 128
 129 static struct pl022_ssp_controller ssp0_plat_data = {
 130         .bus_id = 0,
 131         .enable_dma = 0,
 132         .num_chipselect = 1,
 133 };
 134
 135 /*
 136  * RealView PB1176 AMBA devices
 137  */
 138 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2, NO_IRQ }
 139 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3, NO_IRQ }
 140 #define AACI_IRQ        { IRQ_PB1176_AACI, NO_IRQ }
 141 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
 142 #define KMI0_IRQ        { IRQ_PB1176_KMI0, NO_IRQ }
 143 #define KMI1_IRQ        { IRQ_PB1176_KMI1, NO_IRQ }
 144 #define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
 145 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 146 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
 147 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 148 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
 149 #define PB1176_GPIO0_IRQ        { IRQ_PB1176_GPIO0, NO_IRQ }
 150 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1, NO_IRQ }
 151 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
 152 #define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
 153 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0, NO_IRQ }
 154 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1, NO_IRQ }
 155 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2, NO_IRQ }
 156 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
 157 #define PB1176_UART4_IRQ        { IRQ_PB1176_UART4, NO_IRQ }
 158 #define PB1176_SSP_IRQ          { IRQ_DC1176_SSP, NO_IRQ }
 159
 160 /* FPGA Primecells */
 161 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 162 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 163 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 164 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 165 AMBA_DEVICE(uart4,      "fpga:uart4",   PB1176_UART4,   NULL);
 166
 167 /* DevChip Primecells */
 168 AMBA_DEVICE(smc,        "dev:smc",      PB1176_SMC,     NULL);
 169 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 170 AMBA_DEVICE(wdog,       "dev:wdog",     PB1176_WATCHDOG,        NULL);
 171 AMBA_DEVICE(gpio0,      "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
 172 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 173 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 174 AMBA_DEVICE(rtc,        "dev:rtc",      PB1176_RTC,     NULL);
 175 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 176 AMBA_DEVICE(uart0,      "dev:uart0",    PB1176_UART0,   NULL);
 177 AMBA_DEVICE(uart1,      "dev:uart1",    PB1176_UART1,   NULL);
 178 AMBA_DEVICE(uart2,      "dev:uart2",    PB1176_UART2,   NULL);
 179 AMBA_DEVICE(uart3,      "dev:uart3",    PB1176_UART3,   NULL);
 180 AMBA_DEVICE(ssp0,       "dev:ssp0",     PB1176_SSP,     &ssp0_plat_data);
 181 AMBA_DEVICE(clcd,       "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
 182
 183 static struct amba_device *amba_devs[] __initdata = {
 184         &uart0_device,
 185         &uart1_device,
 186         &uart2_device,
 187         &uart3_device,
 188         &uart4_device,
 189         &smc_device,
 190         &clcd_device,
 191         &sctl_device,
 192         &wdog_device,
 193         &gpio0_device,
 194         &gpio1_device,
 195         &gpio2_device,
 196         &rtc_device,
 197         &sci0_device,
 198         &ssp0_device,
 199         &aaci_device,
 200         &mmc0_device,
 201         &kmi0_device,
 202         &kmi1_device,
 203 };
 204
 205 /*
 206  * RealView PB1176 platform devices
 207  */
 208 static struct resource realview_pb1176_flash_resources[] = {
 209         {
 210                 .start          = REALVIEW_PB1176_FLASH_BASE,
 211                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
 212                 .flags          = IORESOURCE_MEM,
 213         },
 214 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
 215         {
 216                 .start          = REALVIEW_PB1176_SEC_FLASH_BASE,
 217                 .end            = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
 218                 .flags          = IORESOURCE_MEM,
 219         },
 220 #endif
 221 };
 222
 223 static struct physmap_flash_data pb1176_rom_pdata = {
 224         .probe_type     = "map_rom",
 225         .width          = 4,
 226         .nr_parts       = 0,
 227 };
 228
 229 static struct resource pb1176_rom_resources[] = {
 230         /*
 231          * This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
 232          * The reference manual states that this is actually a pseudo-ROM
 233          * programmed in NVRAM.
 234          */
 235         {
 236                 .start          = REALVIEW_DC1176_ROM_BASE,
 237                 .end            = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
 238                 .flags          = IORESOURCE_MEM,
 239         }
 240 };
 241
 242 static struct platform_device pb1176_rom_device = {
 243         .name           = "physmap-flash",
 244         .id             = -1,
 245         .num_resources  = ARRAY_SIZE(pb1176_rom_resources),
 246         .resource       = pb1176_rom_resources,
 247         .dev = {
 248                 .platform_data = &pb1176_rom_pdata,
 249         },
 250 };
 251
 252 static struct resource realview_pb1176_smsc911x_resources[] = {
 253         [0] = {
 254                 .start          = REALVIEW_PB1176_ETH_BASE,
 255                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
 256                 .flags          = IORESOURCE_MEM,
 257         },
 258         [1] = {
 259                 .start          = IRQ_PB1176_ETH,
 260                 .end            = IRQ_PB1176_ETH,
 261                 .flags          = IORESOURCE_IRQ,
 262         },
 263 };
 264
 265 static struct resource realview_pb1176_isp1761_resources[] = {
 266         [0] = {
 267                 .start          = REALVIEW_PB1176_USB_BASE,
 268                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
 269                 .flags          = IORESOURCE_MEM,
 270         },
 271         [1] = {
 272                 .start          = IRQ_PB1176_USB,
 273                 .end            = IRQ_PB1176_USB,
 274                 .flags          = IORESOURCE_IRQ,
 275         },
 276 };
 277
 278 static struct resource pmu_resource = {
 279         .start          = IRQ_DC1176_CORE_PMU,
 280         .end            = IRQ_DC1176_CORE_PMU,
 281         .flags          = IORESOURCE_IRQ,
 282 };
 283
 284 static struct platform_device pmu_device = {
 285         .name                   = "arm-pmu",
 286         .id                     = ARM_PMU_DEVICE_CPU,
 287         .num_resources          = 1,
 288         .resource               = &pmu_resource,
 289 };
 290
 291 static struct resource char_lcd_resources[] = {
 292         {
 293                 .start = REALVIEW_CHAR_LCD_BASE,
 294                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 295                 .flags = IORESOURCE_MEM,
 296         },
 297         {
 298                 .start  = IRQ_PB1176_CHARLCD,
 299                 .end    = IRQ_PB1176_CHARLCD,
 300                 .flags  = IORESOURCE_IRQ,
 301         },
 302 };
 303
 304 static struct platform_device char_lcd_device = {
 305         .name           =       "arm-charlcd",
 306         .id             =       -1,
 307         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 308         .resource       =       char_lcd_resources,
 309 };
 310
 311 static void __init gic_init_irq(void)
 312 {
 313         /* ARM1176 DevChip GIC, primary */
 314         gic_init(0, IRQ_DC1176_GIC_START,
 315                  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
 316                  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
 317
 318         /* board GIC, secondary */
 319         gic_init(1, IRQ_PB1176_GIC_START,
 320                  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
 321                  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 322         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 323 }
 324
 325 static void __init realview_pb1176_timer_init(void)
 326 {
 327         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
 328         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
 329         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 330         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 331
 332         realview_timer_init(IRQ_DC1176_TIMER0);
 333 }
 334
 335 static struct sys_timer realview_pb1176_timer = {
 336         .init           = realview_pb1176_timer_init,
 337 };
 338
 339 static void realview_pb1176_reset(char mode)
 340 {
 341         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 342         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 343         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 344         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
 345 }
 346
 347 static void realview_pb1176_fixup(struct tag *tags, char **from,
 348                                   struct meminfo *meminfo)
 349 {
 350         /*
 351          * RealView PB1176 only has 128MB of RAM mapped at 0.
 352          */
 353         meminfo->bank[0].start = 0;
 354         meminfo->bank[0].size = SZ_128M;
 355         meminfo->nr_banks = 1;
 356 }
 357
 358 static void __init realview_pb1176_init(void)
 359 {
 360         int i;
 361
 362 #ifdef CONFIG_CACHE_L2X0
 363         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
 364         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
 365 #endif
 366
 367         realview_flash_register(realview_pb1176_flash_resources,
 368                                 ARRAY_SIZE(realview_pb1176_flash_resources));
 369         platform_device_register(&pb1176_rom_device);
 370         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
 371         platform_device_register(&realview_i2c_device);
 372         realview_usb_register(realview_pb1176_isp1761_resources);
 373         platform_device_register(&pmu_device);
 374         platform_device_register(&char_lcd_device);
 375
 376         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 377                 struct amba_device *d = amba_devs[i];
 378                 amba_device_register(d, &iomem_resource);
 379         }
 380
 381 #ifdef CONFIG_LEDS
 382         leds_event = realview_leds_event;
 383 #endif
 384         realview_reset = realview_pb1176_reset;
 385 }
 386
 387 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 388         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 389         .atag_offset    = 0x100,
 390         .fixup          = realview_pb1176_fixup,
 391         .map_io         = realview_pb1176_map_io,
 392         .init_early     = realview_init_early,
 393         .init_irq       = gic_init_irq,
 394         .timer          = &realview_pb1176_timer,
 395         .init_machine   = realview_pb1176_init,
 396 #ifdef CONFIG_ZONE_DMA
 397         .dma_zone_size  = SZ_256M,
 398 #endif
 399 MACHINE_END