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 "hardware.h"
  45 #include "board-pbx.h"
  46 #include "irqs-pbx.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_DEBUG_LL
  83         {
  84                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
  85                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
  86                 .length         = SZ_4K,
  87                 .type           = MT_DEVICE,
  88         },
  89 #endif
  90 };
  91
  92 static struct map_desc realview_local_io_desc[] __initdata = {
  93         {
  94                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
  95                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
  96                 .length         = SZ_4K,
  97                 .type           = MT_DEVICE,
  98         }, {
  99                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 100                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 101                 .length         = SZ_4K,
 102                 .type           = MT_DEVICE,
 103         }, {
 104                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
 105                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
 106                 .length         = SZ_8K,
 107                 .type           = MT_DEVICE,
 108         }
 109 };
 110
 111 static void __init realview_pbx_map_io(void)
 112 {
 113         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
 114         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 115                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
 116 }
 117
 118 static struct pl061_platform_data gpio0_plat_data = {
 119         .gpio_base      = 0,
 120 };
 121
 122 static struct pl061_platform_data gpio1_plat_data = {
 123         .gpio_base      = 8,
 124 };
 125
 126 static struct pl061_platform_data gpio2_plat_data = {
 127         .gpio_base      = 16,
 128 };
 129
 130 static struct pl022_ssp_controller ssp0_plat_data = {
 131         .bus_id = 0,
 132         .enable_dma = 0,
 133         .num_chipselect = 1,
 134 };
 135
 136 /*
 137  * RealView PBXCore AMBA devices
 138  */
 139
 140 #define GPIO2_IRQ               { IRQ_PBX_GPIO2 }
 141 #define GPIO3_IRQ               { IRQ_PBX_GPIO3 }
 142 #define AACI_IRQ                { IRQ_PBX_AACI }
 143 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
 144 #define KMI0_IRQ                { IRQ_PBX_KMI0 }
 145 #define KMI1_IRQ                { IRQ_PBX_KMI1 }
 146 #define PBX_SMC_IRQ             { }
 147 #define MPMC_IRQ                { }
 148 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD }
 149 #define DMAC_IRQ                { IRQ_PBX_DMAC }
 150 #define SCTL_IRQ                { }
 151 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG }
 152 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0 }
 153 #define GPIO1_IRQ               { IRQ_PBX_GPIO1 }
 154 #define PBX_RTC_IRQ             { IRQ_PBX_RTC }
 155 #define SCI_IRQ                 { IRQ_PBX_SCI }
 156 #define PBX_UART0_IRQ           { IRQ_PBX_UART0 }
 157 #define PBX_UART1_IRQ           { IRQ_PBX_UART1 }
 158 #define PBX_UART2_IRQ           { IRQ_PBX_UART2 }
 159 #define PBX_UART3_IRQ           { IRQ_PBX_UART3 }
 160 #define PBX_SSP_IRQ             { IRQ_PBX_SSP }
 161
 162 /* FPGA Primecells */
 163 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 164 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 165 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 166 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 167 APB_DEVICE(uart3,       "fpga:uart3",   PBX_UART3,      NULL);
 168
 169 /* DevChip Primecells */
 170 AHB_DEVICE(smc, "dev:smc",      PBX_SMC,        NULL);
 171 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 172 APB_DEVICE(wdog,        "dev:wdog",     PBX_WATCHDOG,   NULL);
 173 APB_DEVICE(gpio0,       "dev:gpio0",    PBX_GPIO0,      &gpio0_plat_data);
 174 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 175 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 176 APB_DEVICE(rtc,         "dev:rtc",      PBX_RTC,        NULL);
 177 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 178 APB_DEVICE(uart0,       "dev:uart0",    PBX_UART0,      NULL);
 179 APB_DEVICE(uart1,       "dev:uart1",    PBX_UART1,      NULL);
 180 APB_DEVICE(uart2,       "dev:uart2",    PBX_UART2,      NULL);
 181 APB_DEVICE(ssp0,        "dev:ssp0",     PBX_SSP,        &ssp0_plat_data);
 182
 183 /* Primecells on the NEC ISSP chip */
 184 AHB_DEVICE(clcd,        "issp:clcd",    PBX_CLCD,       &clcd_plat_data);
 185 AHB_DEVICE(dmac,        "issp:dmac",    DMAC,           NULL);
 186
 187 static struct amba_device *amba_devs[] __initdata = {
 188         &dmac_device,
 189         &uart0_device,
 190         &uart1_device,
 191         &uart2_device,
 192         &uart3_device,
 193         &smc_device,
 194         &clcd_device,
 195         &sctl_device,
 196         &wdog_device,
 197         &gpio0_device,
 198         &gpio1_device,
 199         &gpio2_device,
 200         &rtc_device,
 201         &sci0_device,
 202         &ssp0_device,
 203         &aaci_device,
 204         &mmc0_device,
 205         &kmi0_device,
 206         &kmi1_device,
 207 };
 208
 209 /*
 210  * RealView PB-X platform devices
 211  */
 212 static struct resource realview_pbx_flash_resources[] = {
 213         [0] = {
 214                 .start          = REALVIEW_PBX_FLASH0_BASE,
 215                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
 216                 .flags          = IORESOURCE_MEM,
 217         },
 218         [1] = {
 219                 .start          = REALVIEW_PBX_FLASH1_BASE,
 220                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
 221                 .flags          = IORESOURCE_MEM,
 222         },
 223 };
 224
 225 static struct resource realview_pbx_smsc911x_resources[] = {
 226         [0] = {
 227                 .start          = REALVIEW_PBX_ETH_BASE,
 228                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
 229                 .flags          = IORESOURCE_MEM,
 230         },
 231         [1] = {
 232                 .start          = IRQ_PBX_ETH,
 233                 .end            = IRQ_PBX_ETH,
 234                 .flags          = IORESOURCE_IRQ,
 235         },
 236 };
 237
 238 static struct resource realview_pbx_isp1761_resources[] = {
 239         [0] = {
 240                 .start          = REALVIEW_PBX_USB_BASE,
 241                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
 242                 .flags          = IORESOURCE_MEM,
 243         },
 244         [1] = {
 245                 .start          = IRQ_PBX_USB,
 246                 .end            = IRQ_PBX_USB,
 247                 .flags          = IORESOURCE_IRQ,
 248         },
 249 };
 250
 251 #ifdef CONFIG_CACHE_L2X0
 252 static struct resource pmu_resources[] = {
 253         [0] = {
 254                 .start          = IRQ_PBX_PMU_CPU0,
 255                 .end            = IRQ_PBX_PMU_CPU0,
 256                 .flags          = IORESOURCE_IRQ,
 257         },
 258         [1] = {
 259                 .start          = IRQ_PBX_PMU_CPU1,
 260                 .end            = IRQ_PBX_PMU_CPU1,
 261                 .flags          = IORESOURCE_IRQ,
 262         },
 263         [2] = {
 264                 .start          = IRQ_PBX_PMU_CPU2,
 265                 .end            = IRQ_PBX_PMU_CPU2,
 266                 .flags          = IORESOURCE_IRQ,
 267         },
 268         [3] = {
 269                 .start          = IRQ_PBX_PMU_CPU3,
 270                 .end            = IRQ_PBX_PMU_CPU3,
 271                 .flags          = IORESOURCE_IRQ,
 272         },
 273 };
 274
 275 static struct platform_device pmu_device = {
 276         .name                   = "armv7-pmu",
 277         .id                     = -1,
 278         .num_resources          = ARRAY_SIZE(pmu_resources),
 279         .resource               = pmu_resources,
 280 };
 281 #endif
 282
 283 static void __init gic_init_irq(void)
 284 {
 285         /* ARM PBX on-board GIC */
 286         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
 287                 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 288                          __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
 289         } else {
 290                 gic_init(0, IRQ_PBX_GIC_START,
 291                          __io_address(REALVIEW_PBX_GIC_DIST_BASE),
 292                          __io_address(REALVIEW_PBX_GIC_CPU_BASE));
 293         }
 294 }
 295
 296 #ifdef CONFIG_HAVE_ARM_TWD
 297 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
 298                               REALVIEW_PBX_TILE_TWD_BASE,
 299                               IRQ_LOCALTIMER);
 300
 301 static void __init realview_pbx_twd_init(void)
 302 {
 303         int err = twd_local_timer_register(&twd_local_timer);
 304         if (err)
 305                 pr_err("twd_local_timer_register failed %d\n", err);
 306 }
 307 #else
 308 #define realview_pbx_twd_init() do { } while(0)
 309 #endif
 310
 311 static void __init realview_pbx_timer_init(void)
 312 {
 313         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
 314         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
 315         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 316         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 317
 318         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 319         realview_timer_init(IRQ_PBX_TIMER0_1);
 320         realview_pbx_twd_init();
 321 }
 322
 323 static void realview_pbx_fixup(struct tag *tags, char **from)
 324 {
 325 #ifdef CONFIG_SPARSEMEM
 326         /*
 327          * Memory configuration with SPARSEMEM enabled on RealView PBX (see
 328          * asm/mach/memory.h for more information).
 329          */
 330
 331         memblock_add(0, SZ_256M);
 332         memblock_add(0x20000000, SZ_512M);
 333         memblock_add(0x80000000, SZ_256M);
 334 #else
 335         realview_fixup(tags, from);
 336 #endif
 337 }
 338
 339 static void realview_pbx_restart(enum reboot_mode mode, const char *cmd)
 340 {
 341         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 342         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 343
 344         /*
 345          * To reset, we hit the on-board reset register
 346          * in the system FPGA
 347          */
 348         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 349         __raw_writel(0x00F0, reset_ctrl);
 350         __raw_writel(0x00F4, reset_ctrl);
 351         dsb();
 352 }
 353
 354 static void __init realview_pbx_init(void)
 355 {
 356         int i;
 357
 358 #ifdef CONFIG_CACHE_L2X0
 359         if (core_tile_pbxa9mp()) {
 360                 void __iomem *l2x0_base =
 361                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
 362
 363                 /* set RAM latencies to 1 cycle for eASIC */
 364                 writel(0, l2x0_base + L310_TAG_LATENCY_CTRL);
 365                 writel(0, l2x0_base + L310_DATA_LATENCY_CTRL);
 366
 367                 /* 16KB way size, 8-way associativity, parity disabled
 368                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
 369                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
 370                 platform_device_register(&pmu_device);
 371         }
 372 #endif
 373
 374         realview_flash_register(realview_pbx_flash_resources,
 375                                 ARRAY_SIZE(realview_pbx_flash_resources));
 376         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
 377         platform_device_register(&realview_i2c_device);
 378         platform_device_register(&realview_cf_device);
 379         platform_device_register(&realview_leds_device);
 380         realview_usb_register(realview_pbx_isp1761_resources);
 381
 382         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 383                 struct amba_device *d = amba_devs[i];
 384                 amba_device_register(d, &iomem_resource);
 385         }
 386 }
 387
 388 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 389         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 390         .atag_offset    = 0x100,
 391         .smp            = smp_ops(realview_smp_ops),
 392         .fixup          = realview_pbx_fixup,
 393         .map_io         = realview_pbx_map_io,
 394         .init_early     = realview_init_early,
 395         .init_irq       = gic_init_irq,
 396         .init_time      = realview_pbx_timer_init,
 397         .init_machine   = realview_pbx_init,
 398 #ifdef CONFIG_ZONE_DMA
 399         .dma_zone_size  = SZ_256M,
 400 #endif
 401         .restart        = realview_pbx_restart,
 402 MACHINE_END