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