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
  33 #include <asm/irq.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/smp_twd.h>
  36 #include <asm/pgtable.h>
  37 #include <asm/hardware/cache-l2x0.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/time.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/board-pbx.h>
  45 #include <mach/irqs.h>
  46
  47 #include "core.h"
  48
  49 static struct map_desc realview_pbx_io_desc[] __initdata = {
  50         {
  51                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  52                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  53                 .length         = SZ_4K,
  54                 .type           = MT_DEVICE,
  55         }, {
  56                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
  57                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
  58                 .length         = SZ_4K,
  59                 .type           = MT_DEVICE,
  60         }, {
  61                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
  62                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
  63                 .length         = SZ_4K,
  64                 .type           = MT_DEVICE,
  65         }, {
  66                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  67                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  68                 .length         = SZ_4K,
  69                 .type           = MT_DEVICE,
  70         }, {
  71                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
  72                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
  73                 .length         = SZ_4K,
  74                 .type           = MT_DEVICE,
  75         }, {
  76                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
  77                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
  78                 .length         = SZ_4K,
  79                 .type           = MT_DEVICE,
  80         },
  81 #ifdef CONFIG_PCI
  82         {
  83                 .virtual        = PCIX_UNIT_BASE,
  84                 .pfn            = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
  85                 .length         = REALVIEW_PBX_PCI_BASE_SIZE,
  86                 .type           = MT_DEVICE,
  87         },
  88 #endif
  89 #ifdef CONFIG_DEBUG_LL
  90         {
  91                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
  92                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
  93                 .length         = SZ_4K,
  94                 .type           = MT_DEVICE,
  95         },
  96 #endif
  97 };
  98
  99 static struct map_desc realview_local_io_desc[] __initdata = {
 100         {
 101                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
 102                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
 103                 .length         = SZ_4K,
 104                 .type           = MT_DEVICE,
 105         }, {
 106                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 107                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 108                 .length         = SZ_4K,
 109                 .type           = MT_DEVICE,
 110         }, {
 111                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
 112                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
 113                 .length         = SZ_8K,
 114                 .type           = MT_DEVICE,
 115         }
 116 };
 117
 118 static void __init realview_pbx_map_io(void)
 119 {
 120         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
 121         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 122                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
 123 }
 124
 125 static struct pl061_platform_data gpio0_plat_data = {
 126         .gpio_base      = 0,
 127 };
 128
 129 static struct pl061_platform_data gpio1_plat_data = {
 130         .gpio_base      = 8,
 131 };
 132
 133 static struct pl061_platform_data gpio2_plat_data = {
 134         .gpio_base      = 16,
 135 };
 136
 137 static struct pl022_ssp_controller ssp0_plat_data = {
 138         .bus_id = 0,
 139         .enable_dma = 0,
 140         .num_chipselect = 1,
 141 };
 142
 143 /*
 144  * RealView PBXCore AMBA devices
 145  */
 146
 147 #define GPIO2_IRQ               { IRQ_PBX_GPIO2 }
 148 #define GPIO3_IRQ               { IRQ_PBX_GPIO3 }
 149 #define AACI_IRQ                { IRQ_PBX_AACI }
 150 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
 151 #define KMI0_IRQ                { IRQ_PBX_KMI0 }
 152 #define KMI1_IRQ                { IRQ_PBX_KMI1 }
 153 #define PBX_SMC_IRQ             { }
 154 #define MPMC_IRQ                { }
 155 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD }
 156 #define DMAC_IRQ                { IRQ_PBX_DMAC }
 157 #define SCTL_IRQ                { }
 158 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG }
 159 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0 }
 160 #define GPIO1_IRQ               { IRQ_PBX_GPIO1 }
 161 #define PBX_RTC_IRQ             { IRQ_PBX_RTC }
 162 #define SCI_IRQ                 { IRQ_PBX_SCI }
 163 #define PBX_UART0_IRQ           { IRQ_PBX_UART0 }
 164 #define PBX_UART1_IRQ           { IRQ_PBX_UART1 }
 165 #define PBX_UART2_IRQ           { IRQ_PBX_UART2 }
 166 #define PBX_UART3_IRQ           { IRQ_PBX_UART3 }
 167 #define PBX_SSP_IRQ             { IRQ_PBX_SSP }
 168
 169 /* FPGA Primecells */
 170 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 171 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 172 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 173 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 174 APB_DEVICE(uart3,       "fpga:uart3",   PBX_UART3,      NULL);
 175
 176 /* DevChip Primecells */
 177 AHB_DEVICE(smc, "dev:smc",      PBX_SMC,        NULL);
 178 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 179 APB_DEVICE(wdog,        "dev:wdog",     PBX_WATCHDOG,   NULL);
 180 APB_DEVICE(gpio0,       "dev:gpio0",    PBX_GPIO0,      &gpio0_plat_data);
 181 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 182 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 183 APB_DEVICE(rtc,         "dev:rtc",      PBX_RTC,        NULL);
 184 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 185 APB_DEVICE(uart0,       "dev:uart0",    PBX_UART0,      NULL);
 186 APB_DEVICE(uart1,       "dev:uart1",    PBX_UART1,      NULL);
 187 APB_DEVICE(uart2,       "dev:uart2",    PBX_UART2,      NULL);
 188 APB_DEVICE(ssp0,        "dev:ssp0",     PBX_SSP,        &ssp0_plat_data);
 189
 190 /* Primecells on the NEC ISSP chip */
 191 AHB_DEVICE(clcd,        "issp:clcd",    PBX_CLCD,       &clcd_plat_data);
 192 AHB_DEVICE(dmac,        "issp:dmac",    DMAC,           NULL);
 193
 194 static struct amba_device *amba_devs[] __initdata = {
 195         &dmac_device,
 196         &uart0_device,
 197         &uart1_device,
 198         &uart2_device,
 199         &uart3_device,
 200         &smc_device,
 201         &clcd_device,
 202         &sctl_device,
 203         &wdog_device,
 204         &gpio0_device,
 205         &gpio1_device,
 206         &gpio2_device,
 207         &rtc_device,
 208         &sci0_device,
 209         &ssp0_device,
 210         &aaci_device,
 211         &mmc0_device,
 212         &kmi0_device,
 213         &kmi1_device,
 214 };
 215
 216 /*
 217  * RealView PB-X platform devices
 218  */
 219 static struct resource realview_pbx_flash_resources[] = {
 220         [0] = {
 221                 .start          = REALVIEW_PBX_FLASH0_BASE,
 222                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
 223                 .flags          = IORESOURCE_MEM,
 224         },
 225         [1] = {
 226                 .start          = REALVIEW_PBX_FLASH1_BASE,
 227                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
 228                 .flags          = IORESOURCE_MEM,
 229         },
 230 };
 231
 232 static struct resource realview_pbx_smsc911x_resources[] = {
 233         [0] = {
 234                 .start          = REALVIEW_PBX_ETH_BASE,
 235                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
 236                 .flags          = IORESOURCE_MEM,
 237         },
 238         [1] = {
 239                 .start          = IRQ_PBX_ETH,
 240                 .end            = IRQ_PBX_ETH,
 241                 .flags          = IORESOURCE_IRQ,
 242         },
 243 };
 244
 245 static struct resource realview_pbx_isp1761_resources[] = {
 246         [0] = {
 247                 .start          = REALVIEW_PBX_USB_BASE,
 248                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
 249                 .flags          = IORESOURCE_MEM,
 250         },
 251         [1] = {
 252                 .start          = IRQ_PBX_USB,
 253                 .end            = IRQ_PBX_USB,
 254                 .flags          = IORESOURCE_IRQ,
 255         },
 256 };
 257
 258 static struct resource pmu_resources[] = {
 259         [0] = {
 260                 .start          = IRQ_PBX_PMU_CPU0,
 261                 .end            = IRQ_PBX_PMU_CPU0,
 262                 .flags          = IORESOURCE_IRQ,
 263         },
 264         [1] = {
 265                 .start          = IRQ_PBX_PMU_CPU1,
 266                 .end            = IRQ_PBX_PMU_CPU1,
 267                 .flags          = IORESOURCE_IRQ,
 268         },
 269         [2] = {
 270                 .start          = IRQ_PBX_PMU_CPU2,
 271                 .end            = IRQ_PBX_PMU_CPU2,
 272                 .flags          = IORESOURCE_IRQ,
 273         },
 274         [3] = {
 275                 .start          = IRQ_PBX_PMU_CPU3,
 276                 .end            = IRQ_PBX_PMU_CPU3,
 277                 .flags          = IORESOURCE_IRQ,
 278         },
 279 };
 280
 281 static struct platform_device pmu_device = {
 282         .name                   = "arm-pmu",
 283         .id                     = -1,
 284         .num_resources          = ARRAY_SIZE(pmu_resources),
 285         .resource               = pmu_resources,
 286 };
 287
 288 static void __init gic_init_irq(void)
 289 {
 290         /* ARM PBX on-board GIC */
 291         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
 292                 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 293                          __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
 294         } else {
 295                 gic_init(0, IRQ_PBX_GIC_START,
 296                          __io_address(REALVIEW_PBX_GIC_DIST_BASE),
 297                          __io_address(REALVIEW_PBX_GIC_CPU_BASE));
 298         }
 299 }
 300
 301 #ifdef CONFIG_HAVE_ARM_TWD
 302 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
 303                               REALVIEW_PBX_TILE_TWD_BASE,
 304                               IRQ_LOCALTIMER);
 305
 306 static void __init realview_pbx_twd_init(void)
 307 {
 308         int err = twd_local_timer_register(&twd_local_timer);
 309         if (err)
 310                 pr_err("twd_local_timer_register failed %d\n", err);
 311 }
 312 #else
 313 #define realview_pbx_twd_init() do { } while(0)
 314 #endif
 315
 316 static void __init realview_pbx_timer_init(void)
 317 {
 318         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
 319         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
 320         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 321         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 322
 323         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 324         realview_timer_init(IRQ_PBX_TIMER0_1);
 325         realview_pbx_twd_init();
 326 }
 327
 328 static void realview_pbx_fixup(struct tag *tags, char **from,
 329                                struct meminfo *meminfo)
 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         meminfo->bank[0].start = 0;
 337         meminfo->bank[0].size = SZ_256M;
 338         meminfo->bank[1].start = 0x20000000;
 339         meminfo->bank[1].size = SZ_512M;
 340         meminfo->bank[2].start = 0x80000000;
 341         meminfo->bank[2].size = SZ_256M;
 342         meminfo->nr_banks = 3;
 343 #else
 344         realview_fixup(tags, from, meminfo);
 345 #endif
 346 }
 347
 348 static void realview_pbx_restart(enum reboot_mode mode, const char *cmd)
 349 {
 350         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 351         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 352
 353         /*
 354          * To reset, we hit the on-board reset register
 355          * in the system FPGA
 356          */
 357         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 358         __raw_writel(0x00F0, reset_ctrl);
 359         __raw_writel(0x00F4, reset_ctrl);
 360         dsb();
 361 }
 362
 363 static void __init realview_pbx_init(void)
 364 {
 365         int i;
 366
 367 #ifdef CONFIG_CACHE_L2X0
 368         if (core_tile_pbxa9mp()) {
 369                 void __iomem *l2x0_base =
 370                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
 371
 372                 /* set RAM latencies to 1 cycle for eASIC */
 373                 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
 374                 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
 375
 376                 /* 16KB way size, 8-way associativity, parity disabled
 377                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
 378                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
 379                 platform_device_register(&pmu_device);
 380         }
 381 #endif
 382
 383         realview_flash_register(realview_pbx_flash_resources,
 384                                 ARRAY_SIZE(realview_pbx_flash_resources));
 385         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
 386         platform_device_register(&realview_i2c_device);
 387         platform_device_register(&realview_cf_device);
 388         realview_usb_register(realview_pbx_isp1761_resources);
 389
 390         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 391                 struct amba_device *d = amba_devs[i];
 392                 amba_device_register(d, &iomem_resource);
 393         }
 394 }
 395
 396 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 397         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 398         .atag_offset    = 0x100,
 399         .smp            = smp_ops(realview_smp_ops),
 400         .fixup          = realview_pbx_fixup,
 401         .map_io         = realview_pbx_map_io,
 402         .init_early     = realview_init_early,
 403         .init_irq       = gic_init_irq,
 404         .init_time      = realview_pbx_timer_init,
 405         .init_machine   = realview_pbx_init,
 406 #ifdef CONFIG_ZONE_DMA
 407         .dma_zone_size  = SZ_256M,
 408 #endif
 409         .restart        = realview_pbx_restart,
 410 MACHINE_END