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