arch/arm/mach-realview/realview_pbx.c

   1 /*
   2  *  arch/arm/mach-realview/realview_pbx.c
   3  *
   4  *  Copyright (C) 2009 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 version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/device.h>
  24 #include <linux/amba/bus.h>
  25 #include <linux/amba/pl061.h>
  26 #include <linux/amba/mmci.h>
  27 #include <linux/amba/pl022.h>
  28 #include <linux/io.h>
  29 #include <linux/irqchip/arm-gic.h>
  30 #include <linux/platform_data/clk-realview.h>
  31 #include <linux/reboot.h>
  32 #include <linux/memblock.h>
  33
  34 #include <asm/irq.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/smp_twd.h>
  37 #include <asm/pgtable.h>
  38 #include <asm/hardware/cache-l2x0.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/time.h>
  43
  44 #include <mach/hardware.h>
  45 #include <mach/board-pbx.h>
  46 #include <mach/irqs.h>
  47
  48 #include "core.h"
  49
  50 static struct map_desc realview_pbx_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_PBX_GIC_CPU_BASE),
  58                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
  59                 .length         = SZ_4K,
  60                 .type           = MT_DEVICE,
  61         }, {
  62                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
  63                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
  64                 .length         = SZ_4K,
  65                 .type           = MT_DEVICE,
  66         }, {
  67                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  68                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  69                 .length         = SZ_4K,
  70                 .type           = MT_DEVICE,
  71         }, {
  72                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
  73                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
  74                 .length         = SZ_4K,
  75                 .type           = MT_DEVICE,
  76         }, {
  77                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
  78                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
  79                 .length         = SZ_4K,
  80                 .type           = MT_DEVICE,
  81         },
  82 #ifdef CONFIG_PCI
  83         {
  84                 .virtual        = PCIX_UNIT_BASE,
  85                 .pfn            = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
  86                 .length         = REALVIEW_PBX_PCI_BASE_SIZE,
  87                 .type           = MT_DEVICE,
  88         },
  89 #endif
  90 #ifdef CONFIG_DEBUG_LL
  91         {
  92                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
  93                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
  94                 .length         = SZ_4K,
  95                 .type           = MT_DEVICE,
  96         },
  97 #endif
  98 };
  99
 100 static struct map_desc realview_local_io_desc[] __initdata = {
 101         {
 102                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
 103                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
 104                 .length         = SZ_4K,
 105                 .type           = MT_DEVICE,
 106         }, {
 107                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 108                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 109                 .length         = SZ_4K,
 110                 .type           = MT_DEVICE,
 111         }, {
 112                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
 113                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
 114                 .length         = SZ_8K,
 115                 .type           = MT_DEVICE,
 116         }
 117 };
 118
 119 static void __init realview_pbx_map_io(void)
 120 {
 121         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
 122         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 123                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
 124 }
 125
 126 static struct pl061_platform_data gpio0_plat_data = {
 127         .gpio_base      = 0,
 128 };
 129
 130 static struct pl061_platform_data gpio1_plat_data = {
 131         .gpio_base      = 8,
 132 };
 133
 134 static struct pl061_platform_data gpio2_plat_data = {
 135         .gpio_base      = 16,
 136 };
 137
 138 static struct pl022_ssp_controller ssp0_plat_data = {
 139         .bus_id = 0,
 140         .enable_dma = 0,
 141         .num_chipselect = 1,
 142 };
 143
 144 /*
 145  * RealView PBXCore AMBA devices
 146  */
 147
 148 #define GPIO2_IRQ               { IRQ_PBX_GPIO2 }
 149 #define GPIO3_IRQ               { IRQ_PBX_GPIO3 }
 150 #define AACI_IRQ                { IRQ_PBX_AACI }
 151 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
 152 #define KMI0_IRQ                { IRQ_PBX_KMI0 }
 153 #define KMI1_IRQ                { IRQ_PBX_KMI1 }
 154 #define PBX_SMC_IRQ             { }
 155 #define MPMC_IRQ                { }
 156 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD }
 157 #define DMAC_IRQ                { IRQ_PBX_DMAC }
 158 #define SCTL_IRQ                { }
 159 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG }
 160 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0 }
 161 #define GPIO1_IRQ               { IRQ_PBX_GPIO1 }
 162 #define PBX_RTC_IRQ             { IRQ_PBX_RTC }
 163 #define SCI_IRQ                 { IRQ_PBX_SCI }
 164 #define PBX_UART0_IRQ           { IRQ_PBX_UART0 }
 165 #define PBX_UART1_IRQ           { IRQ_PBX_UART1 }
 166 #define PBX_UART2_IRQ           { IRQ_PBX_UART2 }
 167 #define PBX_UART3_IRQ           { IRQ_PBX_UART3 }
 168 #define PBX_SSP_IRQ             { IRQ_PBX_SSP }
 169
 170 /* FPGA Primecells */
 171 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 172 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 173 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 174 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 175 APB_DEVICE(uart3,       "fpga:uart3",   PBX_UART3,      NULL);
 176
 177 /* DevChip Primecells */
 178 AHB_DEVICE(smc, "dev:smc",      PBX_SMC,        NULL);
 179 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 180 APB_DEVICE(wdog,        "dev:wdog",     PBX_WATCHDOG,   NULL);
 181 APB_DEVICE(gpio0,       "dev:gpio0",    PBX_GPIO0,      &gpio0_plat_data);
 182 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 183 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 184 APB_DEVICE(rtc,         "dev:rtc",      PBX_RTC,        NULL);
 185 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 186 APB_DEVICE(uart0,       "dev:uart0",    PBX_UART0,      NULL);
 187 APB_DEVICE(uart1,       "dev:uart1",    PBX_UART1,      NULL);
 188 APB_DEVICE(uart2,       "dev:uart2",    PBX_UART2,      NULL);
 189 APB_DEVICE(ssp0,        "dev:ssp0",     PBX_SSP,        &ssp0_plat_data);
 190
 191 /* Primecells on the NEC ISSP chip */
 192 AHB_DEVICE(clcd,        "issp:clcd",    PBX_CLCD,       &clcd_plat_data);
 193 AHB_DEVICE(dmac,        "issp:dmac",    DMAC,           NULL);
 194
 195 static struct amba_device *amba_devs[] __initdata = {
 196         &dmac_device,
 197         &uart0_device,
 198         &uart1_device,
 199         &uart2_device,
 200         &uart3_device,
 201         &smc_device,
 202         &clcd_device,
 203         &sctl_device,
 204         &wdog_device,
 205         &gpio0_device,
 206         &gpio1_device,
 207         &gpio2_device,
 208         &rtc_device,
 209         &sci0_device,
 210         &ssp0_device,
 211         &aaci_device,
 212         &mmc0_device,
 213         &kmi0_device,
 214         &kmi1_device,
 215 };
 216
 217 /*
 218  * RealView PB-X platform devices
 219  */
 220 static struct resource realview_pbx_flash_resources[] = {
 221         [0] = {
 222                 .start          = REALVIEW_PBX_FLASH0_BASE,
 223                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
 224                 .flags          = IORESOURCE_MEM,
 225         },
 226         [1] = {
 227                 .start          = REALVIEW_PBX_FLASH1_BASE,
 228                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
 229                 .flags          = IORESOURCE_MEM,
 230         },
 231 };
 232
 233 static struct resource realview_pbx_smsc911x_resources[] = {
 234         [0] = {
 235                 .start          = REALVIEW_PBX_ETH_BASE,
 236                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
 237                 .flags          = IORESOURCE_MEM,
 238         },
 239         [1] = {
 240                 .start          = IRQ_PBX_ETH,
 241                 .end            = IRQ_PBX_ETH,
 242                 .flags          = IORESOURCE_IRQ,
 243         },
 244 };
 245
 246 static struct resource realview_pbx_isp1761_resources[] = {
 247         [0] = {
 248                 .start          = REALVIEW_PBX_USB_BASE,
 249                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
 250                 .flags          = IORESOURCE_MEM,
 251         },
 252         [1] = {
 253                 .start          = IRQ_PBX_USB,
 254                 .end            = IRQ_PBX_USB,
 255                 .flags          = IORESOURCE_IRQ,
 256         },
 257 };
 258
 259 static struct resource pmu_resources[] = {
 260         [0] = {
 261                 .start          = IRQ_PBX_PMU_CPU0,
 262                 .end            = IRQ_PBX_PMU_CPU0,
 263                 .flags          = IORESOURCE_IRQ,
 264         },
 265         [1] = {
 266                 .start          = IRQ_PBX_PMU_CPU1,
 267                 .end            = IRQ_PBX_PMU_CPU1,
 268                 .flags          = IORESOURCE_IRQ,
 269         },
 270         [2] = {
 271                 .start          = IRQ_PBX_PMU_CPU2,
 272                 .end            = IRQ_PBX_PMU_CPU2,
 273                 .flags          = IORESOURCE_IRQ,
 274         },
 275         [3] = {
 276                 .start          = IRQ_PBX_PMU_CPU3,
 277                 .end            = IRQ_PBX_PMU_CPU3,
 278                 .flags          = IORESOURCE_IRQ,
 279         },
 280 };
 281
 282 static struct platform_device pmu_device = {
 283         .name                   = "arm-pmu",
 284         .id                     = -1,
 285         .num_resources          = ARRAY_SIZE(pmu_resources),
 286         .resource               = pmu_resources,
 287 };
 288
 289 static void __init gic_init_irq(void)
 290 {
 291         /* ARM PBX on-board GIC */
 292         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
 293                 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 294                          __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
 295         } else {
 296                 gic_init(0, IRQ_PBX_GIC_START,
 297                          __io_address(REALVIEW_PBX_GIC_DIST_BASE),
 298                          __io_address(REALVIEW_PBX_GIC_CPU_BASE));
 299         }
 300 }
 301
 302 #ifdef CONFIG_HAVE_ARM_TWD
 303 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
 304                               REALVIEW_PBX_TILE_TWD_BASE,
 305                               IRQ_LOCALTIMER);
 306
 307 static void __init realview_pbx_twd_init(void)
 308 {
 309         int err = twd_local_timer_register(&twd_local_timer);
 310         if (err)
 311                 pr_err("twd_local_timer_register failed %d\n", err);
 312 }
 313 #else
 314 #define realview_pbx_twd_init() do { } while(0)
 315 #endif
 316
 317 static void __init realview_pbx_timer_init(void)
 318 {
 319         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
 320         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
 321         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 322         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 323
 324         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 325         realview_timer_init(IRQ_PBX_TIMER0_1);
 326         realview_pbx_twd_init();
 327 }
 328
 329 static void realview_pbx_fixup(struct tag *tags, char **from)
 330 {
 331 #ifdef CONFIG_SPARSEMEM
 332         /*
 333          * Memory configuration with SPARSEMEM enabled on RealView PBX (see
 334          * asm/mach/memory.h for more information).
 335          */
 336
 337         memblock_add(0, SZ_256M);
 338         memblock_add(0x20000000, SZ_512M);
 339         memblock_add(0x80000000, SZ_256M);
 340 #else
 341         realview_fixup(tags, from);
 342 #endif
 343 }
 344
 345 static void realview_pbx_restart(enum reboot_mode mode, const char *cmd)
 346 {
 347         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 348         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 349
 350         /*
 351          * To reset, we hit the on-board reset register
 352          * in the system FPGA
 353          */
 354         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 355         __raw_writel(0x00F0, reset_ctrl);
 356         __raw_writel(0x00F4, reset_ctrl);
 357         dsb();
 358 }
 359
 360 static void __init realview_pbx_init(void)
 361 {
 362         int i;
 363
 364 #ifdef CONFIG_CACHE_L2X0
 365         if (core_tile_pbxa9mp()) {
 366                 void __iomem *l2x0_base =
 367                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
 368
 369                 /* set RAM latencies to 1 cycle for eASIC */
 370                 writel(0, l2x0_base + L310_TAG_LATENCY_CTRL);
 371                 writel(0, l2x0_base + L310_DATA_LATENCY_CTRL);
 372
 373                 /* 16KB way size, 8-way associativity, parity disabled
 374                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
 375                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
 376                 platform_device_register(&pmu_device);
 377         }
 378 #endif
 379
 380         realview_flash_register(realview_pbx_flash_resources,
 381                                 ARRAY_SIZE(realview_pbx_flash_resources));
 382         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
 383         platform_device_register(&realview_i2c_device);
 384         platform_device_register(&realview_cf_device);
 385         platform_device_register(&realview_leds_device);
 386         realview_usb_register(realview_pbx_isp1761_resources);
 387
 388         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 389                 struct amba_device *d = amba_devs[i];
 390                 amba_device_register(d, &iomem_resource);
 391         }
 392 }
 393
 394 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 395         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 396         .atag_offset    = 0x100,
 397         .smp            = smp_ops(realview_smp_ops),
 398         .fixup          = realview_pbx_fixup,
 399         .map_io         = realview_pbx_map_io,
 400         .init_early     = realview_init_early,
 401         .init_irq       = gic_init_irq,
 402         .init_time      = realview_pbx_timer_init,
 403         .init_machine   = realview_pbx_init,
 404 #ifdef CONFIG_ZONE_DMA
 405         .dma_zone_size  = SZ_256M,
 406 #endif
 407         .restart        = realview_pbx_restart,
 408 MACHINE_END