arch/arm/mach-realview/realview_eb.c

   1 /*
   2  *  linux/arch/arm/mach-realview/realview_eb.c
   3  *
   4  *  Copyright (C) 2004 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 as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/sysdev.h>
  25 #include <linux/amba/bus.h>
  26 #include <linux/io.h>
  27
  28 #include <mach/hardware.h>
  29 #include <asm/irq.h>
  30 #include <asm/leds.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/hardware/gic.h>
  33 #include <asm/hardware/icst307.h>
  34 #include <asm/hardware/cache-l2x0.h>
  35 #include <asm/localtimer.h>
  36
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/mmc.h>
  40 #include <asm/mach/time.h>
  41
  42 #include <mach/board-eb.h>
  43 #include <mach/irqs.h>
  44
  45 #include "core.h"
  46 #include "clock.h"
  47
  48 static struct map_desc realview_eb_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_EB_GIC_CPU_BASE),
  56                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
  57                 .length         = SZ_4K,
  58                 .type           = MT_DEVICE,
  59         }, {
  60                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
  61                 .pfn            = __phys_to_pfn(REALVIEW_EB_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_EB_TIMER0_1_BASE),
  71                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
  72                 .length         = SZ_4K,
  73                 .type           = MT_DEVICE,
  74         }, {
  75                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
  76                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
  77                 .length         = SZ_4K,
  78                 .type           = MT_DEVICE,
  79         },
  80 #ifdef CONFIG_DEBUG_LL
  81         {
  82                 .virtual        = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
  83                 .pfn            = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
  84                 .length         = SZ_4K,
  85                 .type           = MT_DEVICE,
  86         }
  87 #endif
  88 };
  89
  90 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
  91         {
  92                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
  93                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
  94                 .length         = SZ_4K,
  95                 .type           = MT_DEVICE,
  96         }, {
  97                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
  98                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
  99                 .length         = SZ_4K,
 100                 .type           = MT_DEVICE,
 101         }, {
 102                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
 103                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
 104                 .length         = SZ_8K,
 105                 .type           = MT_DEVICE,
 106         }
 107 };
 108
 109 static void __init realview_eb_map_io(void)
 110 {
 111         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
 112         if (core_tile_eb11mp() || core_tile_a9mp())
 113                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
 114 }
 115
 116 /*
 117  * RealView EB AMBA devices
 118  */
 119
 120 /*
 121  * These devices are connected via the core APB bridge
 122  */
 123 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
 124 #define GPIO2_DMA       { 0, 0 }
 125 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
 126 #define GPIO3_DMA       { 0, 0 }
 127
 128 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
 129 #define AACI_DMA        { 0x80, 0x81 }
 130 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 131 #define MMCI0_DMA       { 0x84, 0 }
 132 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
 133 #define KMI0_DMA        { 0, 0 }
 134 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
 135 #define KMI1_DMA        { 0, 0 }
 136
 137 /*
 138  * These devices are connected directly to the multi-layer AHB switch
 139  */
 140 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
 141 #define EB_SMC_DMA      { 0, 0 }
 142 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 143 #define MPMC_DMA        { 0, 0 }
 144 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
 145 #define EB_CLCD_DMA     { 0, 0 }
 146 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
 147 #define DMAC_DMA        { 0, 0 }
 148
 149 /*
 150  * These devices are connected via the core APB bridge
 151  */
 152 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 153 #define SCTL_DMA        { 0, 0 }
 154 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
 155 #define EB_WATCHDOG_DMA { 0, 0 }
 156 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
 157 #define EB_GPIO0_DMA    { 0, 0 }
 158 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 159 #define GPIO1_DMA       { 0, 0 }
 160 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
 161 #define EB_RTC_DMA      { 0, 0 }
 162
 163 /*
 164  * These devices are connected via the DMA APB bridge
 165  */
 166 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
 167 #define SCI_DMA         { 7, 6 }
 168 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
 169 #define EB_UART0_DMA    { 15, 14 }
 170 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
 171 #define EB_UART1_DMA    { 13, 12 }
 172 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
 173 #define EB_UART2_DMA    { 11, 10 }
 174 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
 175 #define EB_UART3_DMA    { 0x86, 0x87 }
 176 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
 177 #define EB_SSP_DMA      { 9, 8 }
 178
 179 /* FPGA Primecells */
 180 AMBA_DEVICE(aaci,  "fpga:04", AACI,     NULL);
 181 AMBA_DEVICE(mmc0,  "fpga:05", MMCI0,    &realview_mmc0_plat_data);
 182 AMBA_DEVICE(kmi0,  "fpga:06", KMI0,     NULL);
 183 AMBA_DEVICE(kmi1,  "fpga:07", KMI1,     NULL);
 184 AMBA_DEVICE(uart3, "fpga:09", EB_UART3, NULL);
 185
 186 /* DevChip Primecells */
 187 AMBA_DEVICE(smc,   "dev:00",  EB_SMC,   NULL);
 188 AMBA_DEVICE(clcd,  "dev:20",  EB_CLCD,  &clcd_plat_data);
 189 AMBA_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
 190 AMBA_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
 191 AMBA_DEVICE(wdog,  "dev:e1",  EB_WATCHDOG, NULL);
 192 AMBA_DEVICE(gpio0, "dev:e4",  EB_GPIO0, NULL);
 193 AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    NULL);
 194 AMBA_DEVICE(gpio2, "dev:e6",  GPIO2,    NULL);
 195 AMBA_DEVICE(rtc,   "dev:e8",  EB_RTC,   NULL);
 196 AMBA_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 197 AMBA_DEVICE(uart0, "dev:f1",  EB_UART0, NULL);
 198 AMBA_DEVICE(uart1, "dev:f2",  EB_UART1, NULL);
 199 AMBA_DEVICE(uart2, "dev:f3",  EB_UART2, NULL);
 200 AMBA_DEVICE(ssp0,  "dev:f4",  EB_SSP,   NULL);
 201
 202 static struct amba_device *amba_devs[] __initdata = {
 203         &dmac_device,
 204         &uart0_device,
 205         &uart1_device,
 206         &uart2_device,
 207         &uart3_device,
 208         &smc_device,
 209         &clcd_device,
 210         &sctl_device,
 211         &wdog_device,
 212         &gpio0_device,
 213         &gpio1_device,
 214         &gpio2_device,
 215         &rtc_device,
 216         &sci0_device,
 217         &ssp0_device,
 218         &aaci_device,
 219         &mmc0_device,
 220         &kmi0_device,
 221         &kmi1_device,
 222 };
 223
 224 /*
 225  * RealView EB platform devices
 226  */
 227 static struct resource realview_eb_flash_resource = {
 228         .start                  = REALVIEW_EB_FLASH_BASE,
 229         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
 230         .flags                  = IORESOURCE_MEM,
 231 };
 232
 233 static struct resource realview_eb_eth_resources[] = {
 234         [0] = {
 235                 .start          = REALVIEW_EB_ETH_BASE,
 236                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
 237                 .flags          = IORESOURCE_MEM,
 238         },
 239         [1] = {
 240                 .start          = IRQ_EB_ETH,
 241                 .end            = IRQ_EB_ETH,
 242                 .flags          = IORESOURCE_IRQ,
 243         },
 244 };
 245
 246 /*
 247  * Detect and register the correct Ethernet device. RealView/EB rev D
 248  * platforms use the newer SMSC LAN9118 Ethernet chip
 249  */
 250 static int eth_device_register(void)
 251 {
 252         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
 253         const char *name = NULL;
 254         u32 idrev;
 255
 256         if (!eth_addr)
 257                 return -ENOMEM;
 258
 259         idrev = readl(eth_addr + 0x50);
 260         if ((idrev & 0xFFFF0000) != 0x01180000)
 261                 /* SMSC LAN9118 not present, use LAN91C111 instead */
 262                 name = "smc91x";
 263
 264         iounmap(eth_addr);
 265         return realview_eth_register(name, realview_eb_eth_resources);
 266 }
 267
 268 static struct resource realview_eb_isp1761_resources[] = {
 269         [0] = {
 270                 .start          = REALVIEW_EB_USB_BASE,
 271                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
 272                 .flags          = IORESOURCE_MEM,
 273         },
 274         [1] = {
 275                 .start          = IRQ_EB_USB,
 276                 .end            = IRQ_EB_USB,
 277                 .flags          = IORESOURCE_IRQ,
 278         },
 279 };
 280
 281 static void __init gic_init_irq(void)
 282 {
 283         if (core_tile_eb11mp() || core_tile_a9mp()) {
 284                 unsigned int pldctrl;
 285
 286                 /* new irq mode */
 287                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 288                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 289                 pldctrl |= 0x00800000;
 290                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 291                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 292
 293                 /* core tile GIC, primary */
 294                 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
 295                 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
 296                 gic_cpu_init(0, gic_cpu_base_addr);
 297
 298 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 299                 /* board GIC, secondary */
 300                 gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
 301                 gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
 302                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 303 #endif
 304         } else {
 305                 /* board GIC, primary */
 306                 gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
 307                 gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
 308                 gic_cpu_init(0, gic_cpu_base_addr);
 309         }
 310 }
 311
 312 /*
 313  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 314  */
 315 static void realview_eb11mp_fixup(void)
 316 {
 317         /* AMBA devices */
 318         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 319         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 320         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 321         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 322         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 323         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 324         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 325         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 326         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 327         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 328         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 329         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 330         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 331         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 332         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 333         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 334         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 335         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 336
 337         /* platform devices */
 338         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
 339         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
 340         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
 341         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
 342 }
 343
 344 static void __init realview_eb_timer_init(void)
 345 {
 346         unsigned int timer_irq;
 347
 348         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
 349         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
 350         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 351         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 352
 353         if (core_tile_eb11mp() || core_tile_a9mp()) {
 354 #ifdef CONFIG_LOCAL_TIMERS
 355                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
 356 #endif
 357                 timer_irq = IRQ_EB11MP_TIMER0_1;
 358         } else
 359                 timer_irq = IRQ_EB_TIMER0_1;
 360
 361         realview_timer_init(timer_irq);
 362 }
 363
 364 static struct sys_timer realview_eb_timer = {
 365         .init           = realview_eb_timer_init,
 366 };
 367
 368 static void __init realview_eb_init(void)
 369 {
 370         int i;
 371
 372         if (core_tile_eb11mp() || core_tile_a9mp()) {
 373                 realview_eb11mp_fixup();
 374
 375 #ifdef CONFIG_CACHE_L2X0
 376                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 377                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 378                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 379 #endif
 380         }
 381
 382         realview_flash_register(&realview_eb_flash_resource, 1);
 383         platform_device_register(&realview_i2c_device);
 384         eth_device_register();
 385         realview_usb_register(realview_eb_isp1761_resources);
 386
 387         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 388                 struct amba_device *d = amba_devs[i];
 389                 amba_device_register(d, &iomem_resource);
 390         }
 391
 392 #ifdef CONFIG_LEDS
 393         leds_event = realview_leds_event;
 394 #endif
 395 }
 396
 397 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 398         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 399         .phys_io        = REALVIEW_EB_UART0_BASE,
 400         .io_pg_offst    = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
 401         .boot_params    = PHYS_OFFSET + 0x00000100,
 402         .map_io         = realview_eb_map_io,
 403         .init_irq       = gic_init_irq,
 404         .timer          = &realview_eb_timer,
 405         .init_machine   = realview_eb_init,
 406 MACHINE_END