git.oblomov.eu Git - linux-2.6/blob - 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
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/mmc.h>
  39 #include <asm/mach/time.h>
  40
  41 #include <mach/board-eb.h>
  42 #include <mach/irqs.h>
  43
  44 #include "core.h"
  45 #include "clock.h"
  46
  47 static struct map_desc realview_eb_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_EB_GIC_CPU_BASE),
  55                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
  60                 .pfn            = __phys_to_pfn(REALVIEW_EB_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_EB_TIMER0_1_BASE),
  70                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
  71                 .length         = SZ_4K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
  75                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
  76                 .length         = SZ_4K,
  77                 .type           = MT_DEVICE,
  78         },
  79 #ifdef CONFIG_DEBUG_LL
  80         {
  81                 .virtual        = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
  82                 .pfn            = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
  83                 .length         = SZ_4K,
  84                 .type           = MT_DEVICE,
  85         }
  86 #endif
  87 };
  88
  89 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
  90         {
  91                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
  92                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
  93                 .length         = SZ_4K,
  94                 .type           = MT_DEVICE,
  95         }, {
  96                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
  97                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
  98                 .length         = SZ_4K,
  99                 .type           = MT_DEVICE,
 100         }, {
 101                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
 102                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
 103                 .length         = SZ_8K,
 104                 .type           = MT_DEVICE,
 105         }
 106 };
 107
 108 static void __init realview_eb_map_io(void)
 109 {
 110         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
 111         if (core_tile_eb11mp() || core_tile_a9mp())
 112                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
 113 }
 114
 115 /*
 116  * RealView EB AMBA devices
 117  */
 118
 119 /*
 120  * These devices are connected via the core APB bridge
 121  */
 122 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
 123 #define GPIO2_DMA       { 0, 0 }
 124 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
 125 #define GPIO3_DMA       { 0, 0 }
 126
 127 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
 128 #define AACI_DMA        { 0x80, 0x81 }
 129 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 130 #define MMCI0_DMA       { 0x84, 0 }
 131 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
 132 #define KMI0_DMA        { 0, 0 }
 133 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
 134 #define KMI1_DMA        { 0, 0 }
 135
 136 /*
 137  * These devices are connected directly to the multi-layer AHB switch
 138  */
 139 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
 140 #define EB_SMC_DMA      { 0, 0 }
 141 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 142 #define MPMC_DMA        { 0, 0 }
 143 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
 144 #define EB_CLCD_DMA     { 0, 0 }
 145 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
 146 #define DMAC_DMA        { 0, 0 }
 147
 148 /*
 149  * These devices are connected via the core APB bridge
 150  */
 151 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 152 #define SCTL_DMA        { 0, 0 }
 153 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
 154 #define EB_WATCHDOG_DMA { 0, 0 }
 155 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
 156 #define EB_GPIO0_DMA    { 0, 0 }
 157 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 158 #define GPIO1_DMA       { 0, 0 }
 159 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
 160 #define EB_RTC_DMA      { 0, 0 }
 161
 162 /*
 163  * These devices are connected via the DMA APB bridge
 164  */
 165 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
 166 #define SCI_DMA         { 7, 6 }
 167 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
 168 #define EB_UART0_DMA    { 15, 14 }
 169 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
 170 #define EB_UART1_DMA    { 13, 12 }
 171 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
 172 #define EB_UART2_DMA    { 11, 10 }
 173 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
 174 #define EB_UART3_DMA    { 0x86, 0x87 }
 175 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
 176 #define EB_SSP_DMA      { 9, 8 }
 177
 178 /* FPGA Primecells */
 179 AMBA_DEVICE(aaci,  "fpga:04", AACI,     NULL);
 180 AMBA_DEVICE(mmc0,  "fpga:05", MMCI0,    &realview_mmc0_plat_data);
 181 AMBA_DEVICE(kmi0,  "fpga:06", KMI0,     NULL);
 182 AMBA_DEVICE(kmi1,  "fpga:07", KMI1,     NULL);
 183 AMBA_DEVICE(uart3, "fpga:09", EB_UART3, NULL);
 184
 185 /* DevChip Primecells */
 186 AMBA_DEVICE(smc,   "dev:00",  EB_SMC,   NULL);
 187 AMBA_DEVICE(clcd,  "dev:20",  EB_CLCD,  &clcd_plat_data);
 188 AMBA_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
 189 AMBA_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
 190 AMBA_DEVICE(wdog,  "dev:e1",  EB_WATCHDOG, NULL);
 191 AMBA_DEVICE(gpio0, "dev:e4",  EB_GPIO0, NULL);
 192 AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    NULL);
 193 AMBA_DEVICE(gpio2, "dev:e6",  GPIO2,    NULL);
 194 AMBA_DEVICE(rtc,   "dev:e8",  EB_RTC,   NULL);
 195 AMBA_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 196 AMBA_DEVICE(uart0, "dev:f1",  EB_UART0, NULL);
 197 AMBA_DEVICE(uart1, "dev:f2",  EB_UART1, NULL);
 198 AMBA_DEVICE(uart2, "dev:f3",  EB_UART2, NULL);
 199 AMBA_DEVICE(ssp0,  "dev:f4",  EB_SSP,   NULL);
 200
 201 static struct amba_device *amba_devs[] __initdata = {
 202         &dmac_device,
 203         &uart0_device,
 204         &uart1_device,
 205         &uart2_device,
 206         &uart3_device,
 207         &smc_device,
 208         &clcd_device,
 209         &sctl_device,
 210         &wdog_device,
 211         &gpio0_device,
 212         &gpio1_device,
 213         &gpio2_device,
 214         &rtc_device,
 215         &sci0_device,
 216         &ssp0_device,
 217         &aaci_device,
 218         &mmc0_device,
 219         &kmi0_device,
 220         &kmi1_device,
 221 };
 222
 223 /*
 224  * RealView EB platform devices
 225  */
 226 static struct resource realview_eb_flash_resource = {
 227         .start                  = REALVIEW_EB_FLASH_BASE,
 228         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
 229         .flags                  = IORESOURCE_MEM,
 230 };
 231
 232 static struct resource realview_eb_eth_resources[] = {
 233         [0] = {
 234                 .start          = REALVIEW_EB_ETH_BASE,
 235                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
 236                 .flags          = IORESOURCE_MEM,
 237         },
 238         [1] = {
 239                 .start          = IRQ_EB_ETH,
 240                 .end            = IRQ_EB_ETH,
 241                 .flags          = IORESOURCE_IRQ,
 242         },
 243 };
 244
 245 /*
 246  * Detect and register the correct Ethernet device. RealView/EB rev D
 247  * platforms use the newer SMSC LAN9118 Ethernet chip
 248  */
 249 static int eth_device_register(void)
 250 {
 251         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
 252         const char *name = NULL;
 253         u32 idrev;
 254
 255         if (!eth_addr)
 256                 return -ENOMEM;
 257
 258         idrev = readl(eth_addr + 0x50);
 259         if ((idrev & 0xFFFF0000) != 0x01180000)
 260                 /* SMSC LAN9118 not present, use LAN91C111 instead */
 261                 name = "smc91x";
 262
 263         iounmap(eth_addr);
 264         return realview_eth_register(name, realview_eb_eth_resources);
 265 }
 266
 267 static void __init gic_init_irq(void)
 268 {
 269         if (core_tile_eb11mp() || core_tile_a9mp()) {
 270                 unsigned int pldctrl;
 271
 272                 /* new irq mode */
 273                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 274                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 275                 pldctrl |= 0x00800000;
 276                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 277                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 278
 279                 /* core tile GIC, primary */
 280                 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
 281                 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
 282                 gic_cpu_init(0, gic_cpu_base_addr);
 283
 284 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 285                 /* board GIC, secondary */
 286                 gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
 287                 gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
 288                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 289 #endif
 290         } else {
 291                 /* board GIC, primary */
 292                 gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
 293                 gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
 294                 gic_cpu_init(0, gic_cpu_base_addr);
 295         }
 296 }
 297
 298 /*
 299  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 300  */
 301 static void realview_eb11mp_fixup(void)
 302 {
 303         /* AMBA devices */
 304         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 305         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 306         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 307         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 308         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 309         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 310         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 311         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 312         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 313         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 314         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 315         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 316         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 317         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 318         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 319         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 320         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 321         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 322
 323         /* platform devices */
 324         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
 325         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
 326 }
 327
 328 static void __init realview_eb_timer_init(void)
 329 {
 330         unsigned int timer_irq;
 331
 332         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
 333         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
 334         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
 335         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
 336
 337         if (core_tile_eb11mp() || core_tile_a9mp()) {
 338 #ifdef CONFIG_LOCAL_TIMERS
 339                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
 340 #endif
 341                 timer_irq = IRQ_EB11MP_TIMER0_1;
 342         } else
 343                 timer_irq = IRQ_EB_TIMER0_1;
 344
 345         realview_timer_init(timer_irq);
 346 }
 347
 348 static struct sys_timer realview_eb_timer = {
 349         .init           = realview_eb_timer_init,
 350 };
 351
 352 static void __init realview_eb_init(void)
 353 {
 354         int i;
 355
 356         if (core_tile_eb11mp() || core_tile_a9mp()) {
 357                 realview_eb11mp_fixup();
 358
 359 #ifdef CONFIG_CACHE_L2X0
 360                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 361                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 362                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 363 #endif
 364         }
 365
 366         realview_flash_register(&realview_eb_flash_resource, 1);
 367         platform_device_register(&realview_i2c_device);
 368         eth_device_register();
 369
 370         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 371                 struct amba_device *d = amba_devs[i];
 372                 amba_device_register(d, &iomem_resource);
 373         }
 374
 375 #ifdef CONFIG_LEDS
 376         leds_event = realview_leds_event;
 377 #endif
 378 }
 379
 380 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 381         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 382         .phys_io        = REALVIEW_EB_UART0_BASE,
 383         .io_pg_offst    = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
 384         .boot_params    = PHYS_OFFSET + 0x00000100,
 385         .map_io         = realview_eb_map_io,
 386         .init_irq       = gic_init_irq,
 387         .timer          = &realview_eb_timer,
 388         .init_machine   = realview_eb_init,
 389 MACHINE_END