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/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/mtd/physmap.h>
  30 #include <linux/mtd/partitions.h>
  31 #include <linux/io.h>
  32 #include <linux/irqchip/arm-gic.h>
  33 #include <linux/platform_data/clk-realview.h>
  34 #include <linux/reboot.h>
  35
  36 #include <mach/hardware.h>
  37 #include <asm/irq.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/pgtable.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 };
 117
 118 static struct pl061_platform_data gpio1_plat_data = {
 119         .gpio_base      = 8,
 120 };
 121
 122 static struct pl061_platform_data gpio2_plat_data = {
 123         .gpio_base      = 16,
 124 };
 125
 126 static struct pl022_ssp_controller ssp0_plat_data = {
 127         .bus_id = 0,
 128         .enable_dma = 0,
 129         .num_chipselect = 1,
 130 };
 131
 132 /*
 133  * RealView PB1176 AMBA devices
 134  */
 135 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2 }
 136 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3 }
 137 #define AACI_IRQ        { IRQ_PB1176_AACI }
 138 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
 139 #define KMI0_IRQ        { IRQ_PB1176_KMI0 }
 140 #define KMI1_IRQ        { IRQ_PB1176_KMI1 }
 141 #define PB1176_SMC_IRQ  { }
 142 #define MPMC_IRQ        { }
 143 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD }
 144 #define SCTL_IRQ        { }
 145 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG }
 146 #define PB1176_GPIO0_IRQ        { IRQ_DC1176_GPIO0 }
 147 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1 }
 148 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC }
 149 #define SCI_IRQ         { IRQ_PB1176_SCI }
 150 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0 }
 151 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1 }
 152 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2 }
 153 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3 }
 154 #define PB1176_UART4_IRQ        { IRQ_PB1176_UART4 }
 155 #define PB1176_SSP_IRQ          { IRQ_DC1176_SSP }
 156
 157 /* FPGA Primecells */
 158 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 159 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 160 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 161 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 162 APB_DEVICE(uart4,       "fpga:uart4",   PB1176_UART4,   NULL);
 163
 164 /* DevChip Primecells */
 165 AHB_DEVICE(smc,         "dev:smc",      PB1176_SMC,     NULL);
 166 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 167 APB_DEVICE(wdog,        "dev:wdog",     PB1176_WATCHDOG,        NULL);
 168 APB_DEVICE(gpio0,       "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
 169 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 170 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 171 APB_DEVICE(rtc,         "dev:rtc",      PB1176_RTC,     NULL);
 172 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 173 APB_DEVICE(uart0,       "dev:uart0",    PB1176_UART0,   NULL);
 174 APB_DEVICE(uart1,       "dev:uart1",    PB1176_UART1,   NULL);
 175 APB_DEVICE(uart2,       "dev:uart2",    PB1176_UART2,   NULL);
 176 APB_DEVICE(uart3,       "dev:uart3",    PB1176_UART3,   NULL);
 177 APB_DEVICE(ssp0,        "dev:ssp0",     PB1176_SSP,     &ssp0_plat_data);
 178 AHB_DEVICE(clcd,        "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
 179
 180 static struct amba_device *amba_devs[] __initdata = {
 181         &uart0_device,
 182         &uart1_device,
 183         &uart2_device,
 184         &uart3_device,
 185         &uart4_device,
 186         &smc_device,
 187         &clcd_device,
 188         &sctl_device,
 189         &wdog_device,
 190         &gpio0_device,
 191         &gpio1_device,
 192         &gpio2_device,
 193         &rtc_device,
 194         &sci0_device,
 195         &ssp0_device,
 196         &aaci_device,
 197         &mmc0_device,
 198         &kmi0_device,
 199         &kmi1_device,
 200 };
 201
 202 /*
 203  * RealView PB1176 platform devices
 204  */
 205 static struct resource realview_pb1176_flash_resources[] = {
 206         {
 207                 .start          = REALVIEW_PB1176_FLASH_BASE,
 208                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
 209                 .flags          = IORESOURCE_MEM,
 210         },
 211 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
 212         {
 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 #endif
 218 };
 219
 220 static struct physmap_flash_data pb1176_rom_pdata = {
 221         .probe_type     = "map_rom",
 222         .width          = 4,
 223         .nr_parts       = 0,
 224 };
 225
 226 static struct resource pb1176_rom_resources[] = {
 227         /*
 228          * This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
 229          * The reference manual states that this is actually a pseudo-ROM
 230          * programmed in NVRAM.
 231          */
 232         {
 233                 .start          = REALVIEW_DC1176_ROM_BASE,
 234                 .end            = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
 235                 .flags          = IORESOURCE_MEM,
 236         }
 237 };
 238
 239 static struct platform_device pb1176_rom_device = {
 240         .name           = "physmap-flash",
 241         .id             = -1,
 242         .num_resources  = ARRAY_SIZE(pb1176_rom_resources),
 243         .resource       = pb1176_rom_resources,
 244         .dev = {
 245                 .platform_data = &pb1176_rom_pdata,
 246         },
 247 };
 248
 249 static struct resource realview_pb1176_smsc911x_resources[] = {
 250         [0] = {
 251                 .start          = REALVIEW_PB1176_ETH_BASE,
 252                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
 253                 .flags          = IORESOURCE_MEM,
 254         },
 255         [1] = {
 256                 .start          = IRQ_PB1176_ETH,
 257                 .end            = IRQ_PB1176_ETH,
 258                 .flags          = IORESOURCE_IRQ,
 259         },
 260 };
 261
 262 static struct resource realview_pb1176_isp1761_resources[] = {
 263         [0] = {
 264                 .start          = REALVIEW_PB1176_USB_BASE,
 265                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
 266                 .flags          = IORESOURCE_MEM,
 267         },
 268         [1] = {
 269                 .start          = IRQ_PB1176_USB,
 270                 .end            = IRQ_PB1176_USB,
 271                 .flags          = IORESOURCE_IRQ,
 272         },
 273 };
 274
 275 static struct resource pmu_resource = {
 276         .start          = IRQ_DC1176_CORE_PMU,
 277         .end            = IRQ_DC1176_CORE_PMU,
 278         .flags          = IORESOURCE_IRQ,
 279 };
 280
 281 static struct platform_device pmu_device = {
 282         .name                   = "arm-pmu",
 283         .id                     = -1,
 284         .num_resources          = 1,
 285         .resource               = &pmu_resource,
 286 };
 287
 288 static struct resource char_lcd_resources[] = {
 289         {
 290                 .start = REALVIEW_CHAR_LCD_BASE,
 291                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
 292                 .flags = IORESOURCE_MEM,
 293         },
 294         {
 295                 .start  = IRQ_PB1176_CHARLCD,
 296                 .end    = IRQ_PB1176_CHARLCD,
 297                 .flags  = IORESOURCE_IRQ,
 298         },
 299 };
 300
 301 static struct platform_device char_lcd_device = {
 302         .name           =       "arm-charlcd",
 303         .id             =       -1,
 304         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
 305         .resource       =       char_lcd_resources,
 306 };
 307
 308 static void __init gic_init_irq(void)
 309 {
 310         /* ARM1176 DevChip GIC, primary */
 311         gic_init(0, IRQ_DC1176_GIC_START,
 312                  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
 313                  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
 314
 315         /* board GIC, secondary */
 316         gic_init(1, IRQ_PB1176_GIC_START,
 317                  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
 318                  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 319         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 320 }
 321
 322 static void __init realview_pb1176_timer_init(void)
 323 {
 324         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
 325         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
 326         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 327         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 328
 329         realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
 330         realview_timer_init(IRQ_DC1176_TIMER0);
 331 }
 332
 333 static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd)
 334 {
 335         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 336         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 337         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 338         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
 339         dsb();
 340 }
 341
 342 static void realview_pb1176_fixup(struct tag *tags, char **from,
 343                                   struct meminfo *meminfo)
 344 {
 345         /*
 346          * RealView PB1176 only has 128MB of RAM mapped at 0.
 347          */
 348         meminfo->bank[0].start = 0;
 349         meminfo->bank[0].size = SZ_128M;
 350         meminfo->nr_banks = 1;
 351 }
 352
 353 static void __init realview_pb1176_init(void)
 354 {
 355         int i;
 356
 357 #ifdef CONFIG_CACHE_L2X0
 358         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
 359         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
 360 #endif
 361
 362         realview_flash_register(realview_pb1176_flash_resources,
 363                                 ARRAY_SIZE(realview_pb1176_flash_resources));
 364         platform_device_register(&pb1176_rom_device);
 365         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
 366         platform_device_register(&realview_i2c_device);
 367         realview_usb_register(realview_pb1176_isp1761_resources);
 368         platform_device_register(&pmu_device);
 369         platform_device_register(&char_lcd_device);
 370
 371         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 372                 struct amba_device *d = amba_devs[i];
 373                 amba_device_register(d, &iomem_resource);
 374         }
 375 }
 376
 377 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 378         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 379         .atag_offset    = 0x100,
 380         .fixup          = realview_pb1176_fixup,
 381         .map_io         = realview_pb1176_map_io,
 382         .init_early     = realview_init_early,
 383         .init_irq       = gic_init_irq,
 384         .init_time      = realview_pb1176_timer_init,
 385         .init_machine   = realview_pb1176_init,
 386 #ifdef CONFIG_ZONE_DMA
 387         .dma_zone_size  = SZ_256M,
 388 #endif
 389         .restart        = realview_pb1176_restart,
 390 MACHINE_END