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/sysdev.h>
  24 #include <linux/amba/bus.h>
  25 #include <linux/amba/pl061.h>
  26 #include <linux/amba/mmci.h>
  27 #include <linux/io.h>
  28
  29 #include <asm/irq.h>
  30 #include <asm/leds.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/pmu.h>
  33 #include <asm/smp_twd.h>
  34 #include <asm/hardware/gic.h>
  35 #include <asm/hardware/cache-l2x0.h>
  36
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/time.h>
  40
  41 #include <mach/hardware.h>
  42 #include <mach/board-pbx.h>
  43 #include <mach/irqs.h>
  44
  45 #include "core.h"
  46
  47 static struct map_desc realview_pbx_io_desc[] __initdata = {
  48         {
  49                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  50                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  51                 .length         = SZ_4K,
  52                 .type           = MT_DEVICE,
  53         }, {
  54                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
  55                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
  60                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
  61                 .length         = SZ_4K,
  62                 .type           = MT_DEVICE,
  63         }, {
  64                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  65                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  66                 .length         = SZ_4K,
  67                 .type           = MT_DEVICE,
  68         }, {
  69                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
  70                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
  71                 .length         = SZ_4K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
  75                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
  76                 .length         = SZ_4K,
  77                 .type           = MT_DEVICE,
  78         },
  79 #ifdef CONFIG_PCI
  80         {
  81                 .virtual        = PCIX_UNIT_BASE,
  82                 .pfn            = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
  83                 .length         = REALVIEW_PBX_PCI_BASE_SIZE,
  84                 .type           = MT_DEVICE,
  85         },
  86 #endif
  87 #ifdef CONFIG_DEBUG_LL
  88         {
  89                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
  90                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
  91                 .length         = SZ_4K,
  92                 .type           = MT_DEVICE,
  93         },
  94 #endif
  95 };
  96
  97 static struct map_desc realview_local_io_desc[] __initdata = {
  98         {
  99                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_CPU_BASE),
 100                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_BASE),
 101                 .length         = SZ_4K,
 102                 .type           = MT_DEVICE,
 103         }, {
 104                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 105                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 106                 .length         = SZ_4K,
 107                 .type           = MT_DEVICE,
 108         }, {
 109                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
 110                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
 111                 .length         = SZ_8K,
 112                 .type           = MT_DEVICE,
 113         }
 114 };
 115
 116 static void __init realview_pbx_map_io(void)
 117 {
 118         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
 119         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 120                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
 121 }
 122
 123 static struct pl061_platform_data gpio0_plat_data = {
 124         .gpio_base      = 0,
 125         .irq_base       = -1,
 126 };
 127
 128 static struct pl061_platform_data gpio1_plat_data = {
 129         .gpio_base      = 8,
 130         .irq_base       = -1,
 131 };
 132
 133 static struct pl061_platform_data gpio2_plat_data = {
 134         .gpio_base      = 16,
 135         .irq_base       = -1,
 136 };
 137
 138 /*
 139  * RealView PBXCore AMBA devices
 140  */
 141
 142 #define GPIO2_IRQ               { IRQ_PBX_GPIO2, NO_IRQ }
 143 #define GPIO2_DMA               { 0, 0 }
 144 #define GPIO3_IRQ               { IRQ_PBX_GPIO3, NO_IRQ }
 145 #define GPIO3_DMA               { 0, 0 }
 146 #define AACI_IRQ                { IRQ_PBX_AACI, NO_IRQ }
 147 #define AACI_DMA                { 0x80, 0x81 }
 148 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
 149 #define MMCI0_DMA               { 0x84, 0 }
 150 #define KMI0_IRQ                { IRQ_PBX_KMI0, NO_IRQ }
 151 #define KMI0_DMA                { 0, 0 }
 152 #define KMI1_IRQ                { IRQ_PBX_KMI1, NO_IRQ }
 153 #define KMI1_DMA                { 0, 0 }
 154 #define PBX_SMC_IRQ             { NO_IRQ, NO_IRQ }
 155 #define PBX_SMC_DMA             { 0, 0 }
 156 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
 157 #define MPMC_DMA                { 0, 0 }
 158 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD, NO_IRQ }
 159 #define PBX_CLCD_DMA            { 0, 0 }
 160 #define DMAC_IRQ                { IRQ_PBX_DMAC, NO_IRQ }
 161 #define DMAC_DMA                { 0, 0 }
 162 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
 163 #define SCTL_DMA                { 0, 0 }
 164 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG, NO_IRQ }
 165 #define PBX_WATCHDOG_DMA        { 0, 0 }
 166 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0, NO_IRQ }
 167 #define PBX_GPIO0_DMA           { 0, 0 }
 168 #define GPIO1_IRQ               { IRQ_PBX_GPIO1, NO_IRQ }
 169 #define GPIO1_DMA               { 0, 0 }
 170 #define PBX_RTC_IRQ             { IRQ_PBX_RTC, NO_IRQ }
 171 #define PBX_RTC_DMA             { 0, 0 }
 172 #define SCI_IRQ                 { IRQ_PBX_SCI, NO_IRQ }
 173 #define SCI_DMA                 { 7, 6 }
 174 #define PBX_UART0_IRQ           { IRQ_PBX_UART0, NO_IRQ }
 175 #define PBX_UART0_DMA           { 15, 14 }
 176 #define PBX_UART1_IRQ           { IRQ_PBX_UART1, NO_IRQ }
 177 #define PBX_UART1_DMA           { 13, 12 }
 178 #define PBX_UART2_IRQ           { IRQ_PBX_UART2, NO_IRQ }
 179 #define PBX_UART2_DMA           { 11, 10 }
 180 #define PBX_UART3_IRQ           { IRQ_PBX_UART3, NO_IRQ }
 181 #define PBX_UART3_DMA           { 0x86, 0x87 }
 182 #define PBX_SSP_IRQ             { IRQ_PBX_SSP, NO_IRQ }
 183 #define PBX_SSP_DMA             { 9, 8 }
 184
 185 /* FPGA Primecells */
 186 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 187 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 188 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 189 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 190 AMBA_DEVICE(uart3,      "fpga:uart3",   PBX_UART3,      NULL);
 191
 192 /* DevChip Primecells */
 193 AMBA_DEVICE(smc,        "dev:smc",      PBX_SMC,        NULL);
 194 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 195 AMBA_DEVICE(wdog,       "dev:wdog",     PBX_WATCHDOG,   NULL);
 196 AMBA_DEVICE(gpio0,      "dev:gpio0",    PBX_GPIO0,      &gpio0_plat_data);
 197 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 198 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 199 AMBA_DEVICE(rtc,        "dev:rtc",      PBX_RTC,        NULL);
 200 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 201 AMBA_DEVICE(uart0,      "dev:uart0",    PBX_UART0,      NULL);
 202 AMBA_DEVICE(uart1,      "dev:uart1",    PBX_UART1,      NULL);
 203 AMBA_DEVICE(uart2,      "dev:uart2",    PBX_UART2,      NULL);
 204 AMBA_DEVICE(ssp0,       "dev:ssp0",     PBX_SSP,        NULL);
 205
 206 /* Primecells on the NEC ISSP chip */
 207 AMBA_DEVICE(clcd,       "issp:clcd",    PBX_CLCD,       &clcd_plat_data);
 208 AMBA_DEVICE(dmac,       "issp:dmac",    DMAC,           NULL);
 209
 210 static struct amba_device *amba_devs[] __initdata = {
 211         &dmac_device,
 212         &uart0_device,
 213         &uart1_device,
 214         &uart2_device,
 215         &uart3_device,
 216         &smc_device,
 217         &clcd_device,
 218         &sctl_device,
 219         &wdog_device,
 220         &gpio0_device,
 221         &gpio1_device,
 222         &gpio2_device,
 223         &rtc_device,
 224         &sci0_device,
 225         &ssp0_device,
 226         &aaci_device,
 227         &mmc0_device,
 228         &kmi0_device,
 229         &kmi1_device,
 230 };
 231
 232 /*
 233  * RealView PB-X platform devices
 234  */
 235 static struct resource realview_pbx_flash_resources[] = {
 236         [0] = {
 237                 .start          = REALVIEW_PBX_FLASH0_BASE,
 238                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
 239                 .flags          = IORESOURCE_MEM,
 240         },
 241         [1] = {
 242                 .start          = REALVIEW_PBX_FLASH1_BASE,
 243                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
 244                 .flags          = IORESOURCE_MEM,
 245         },
 246 };
 247
 248 static struct resource realview_pbx_smsc911x_resources[] = {
 249         [0] = {
 250                 .start          = REALVIEW_PBX_ETH_BASE,
 251                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
 252                 .flags          = IORESOURCE_MEM,
 253         },
 254         [1] = {
 255                 .start          = IRQ_PBX_ETH,
 256                 .end            = IRQ_PBX_ETH,
 257                 .flags          = IORESOURCE_IRQ,
 258         },
 259 };
 260
 261 static struct resource realview_pbx_isp1761_resources[] = {
 262         [0] = {
 263                 .start          = REALVIEW_PBX_USB_BASE,
 264                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
 265                 .flags          = IORESOURCE_MEM,
 266         },
 267         [1] = {
 268                 .start          = IRQ_PBX_USB,
 269                 .end            = IRQ_PBX_USB,
 270                 .flags          = IORESOURCE_IRQ,
 271         },
 272 };
 273
 274 static struct resource pmu_resources[] = {
 275         [0] = {
 276                 .start          = IRQ_PBX_PMU_CPU0,
 277                 .end            = IRQ_PBX_PMU_CPU0,
 278                 .flags          = IORESOURCE_IRQ,
 279         },
 280         [1] = {
 281                 .start          = IRQ_PBX_PMU_CPU1,
 282                 .end            = IRQ_PBX_PMU_CPU1,
 283                 .flags          = IORESOURCE_IRQ,
 284         },
 285         [2] = {
 286                 .start          = IRQ_PBX_PMU_CPU2,
 287                 .end            = IRQ_PBX_PMU_CPU2,
 288                 .flags          = IORESOURCE_IRQ,
 289         },
 290         [3] = {
 291                 .start          = IRQ_PBX_PMU_CPU3,
 292                 .end            = IRQ_PBX_PMU_CPU3,
 293                 .flags          = IORESOURCE_IRQ,
 294         },
 295 };
 296
 297 static struct platform_device pmu_device = {
 298         .name                   = "arm-pmu",
 299         .id                     = ARM_PMU_DEVICE_CPU,
 300         .num_resources          = ARRAY_SIZE(pmu_resources),
 301         .resource               = pmu_resources,
 302 };
 303
 304 static void __init gic_init_irq(void)
 305 {
 306         /* ARM PBX on-board GIC */
 307         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
 308                 gic_cpu_base_addr = __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE);
 309                 gic_dist_init(0, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 310                               29);
 311                 gic_cpu_init(0, __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
 312         } else {
 313                 gic_cpu_base_addr = __io_address(REALVIEW_PBX_GIC_CPU_BASE);
 314                 gic_dist_init(0, __io_address(REALVIEW_PBX_GIC_DIST_BASE),
 315                               IRQ_PBX_GIC_START);
 316                 gic_cpu_init(0, __io_address(REALVIEW_PBX_GIC_CPU_BASE));
 317         }
 318 }
 319
 320 static void __init realview_pbx_timer_init(void)
 321 {
 322         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
 323         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
 324         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 325         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 326
 327 #ifdef CONFIG_LOCAL_TIMERS
 328         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 329                 twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
 330 #endif
 331         realview_timer_init(IRQ_PBX_TIMER0_1);
 332 }
 333
 334 static struct sys_timer realview_pbx_timer = {
 335         .init           = realview_pbx_timer_init,
 336 };
 337
 338 static void realview_pbx_fixup(struct machine_desc *mdesc, struct tag *tags,
 339                                char **from, struct meminfo *meminfo)
 340 {
 341 #ifdef CONFIG_SPARSEMEM
 342         /*
 343          * Memory configuration with SPARSEMEM enabled on RealView PBX (see
 344          * asm/mach/memory.h for more information).
 345          */
 346         meminfo->bank[0].start = 0;
 347         meminfo->bank[0].size = SZ_256M;
 348         meminfo->bank[1].start = 0x20000000;
 349         meminfo->bank[1].size = SZ_512M;
 350         meminfo->bank[2].start = 0x80000000;
 351         meminfo->bank[2].size = SZ_256M;
 352         meminfo->nr_banks = 3;
 353 #else
 354         realview_fixup(mdesc, tags, from, meminfo);
 355 #endif
 356 }
 357
 358 static void realview_pbx_reset(char mode)
 359 {
 360         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 361         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 362
 363         /*
 364          * To reset, we hit the on-board reset register
 365          * in the system FPGA
 366          */
 367         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 368         __raw_writel(0x00F0, reset_ctrl);
 369         __raw_writel(0x00F4, reset_ctrl);
 370 }
 371
 372 static void __init realview_pbx_init(void)
 373 {
 374         int i;
 375
 376 #ifdef CONFIG_CACHE_L2X0
 377         if (core_tile_pbxa9mp()) {
 378                 void __iomem *l2x0_base =
 379                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
 380
 381                 /* set RAM latencies to 1 cycle for eASIC */
 382                 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
 383                 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
 384
 385                 /* 16KB way size, 8-way associativity, parity disabled
 386                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
 387                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
 388                 platform_device_register(&pmu_device);
 389         }
 390 #endif
 391
 392         realview_flash_register(realview_pbx_flash_resources,
 393                                 ARRAY_SIZE(realview_pbx_flash_resources));
 394         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
 395         platform_device_register(&realview_i2c_device);
 396         platform_device_register(&realview_cf_device);
 397         realview_usb_register(realview_pbx_isp1761_resources);
 398
 399         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 400                 struct amba_device *d = amba_devs[i];
 401                 amba_device_register(d, &iomem_resource);
 402         }
 403
 404 #ifdef CONFIG_LEDS
 405         leds_event = realview_leds_event;
 406 #endif
 407         realview_reset = realview_pbx_reset;
 408 }
 409
 410 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 411         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 412         .phys_io        = REALVIEW_PBX_UART0_BASE,
 413         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
 414         .boot_params    = PHYS_OFFSET + 0x00000100,
 415         .fixup          = realview_pbx_fixup,
 416         .map_io         = realview_pbx_map_io,
 417         .init_irq       = gic_init_irq,
 418         .timer          = &realview_pbx_timer,
 419         .init_machine   = realview_pbx_init,
 420 MACHINE_END