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
  27 #include <asm/hardware.h>
  28 #include <asm/io.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 <asm/arch/board-eb.h>
  42 #include <asm/arch/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_GIC_CPU_BASE),
  55                 .pfn            = __phys_to_pfn(REALVIEW_GIC_CPU_BASE),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = IO_ADDRESS(REALVIEW_GIC_DIST_BASE),
  60                 .pfn            = __phys_to_pfn(REALVIEW_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_TIMER0_1_BASE),
  70                 .pfn            = __phys_to_pfn(REALVIEW_TIMER0_1_BASE),
  71                 .length         = SZ_4K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = IO_ADDRESS(REALVIEW_TIMER2_3_BASE),
  75                 .pfn            = __phys_to_pfn(REALVIEW_TIMER2_3_BASE),
  76                 .length         = SZ_4K,
  77                 .type           = MT_DEVICE,
  78         },
  79 #ifdef CONFIG_DEBUG_LL
  80         {
  81                 .virtual        = IO_ADDRESS(REALVIEW_UART0_BASE),
  82                 .pfn            = __phys_to_pfn(REALVIEW_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())
 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 SMC_IRQ         { NO_IRQ, NO_IRQ }
 140 #define SMC_DMA         { 0, 0 }
 141 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 142 #define MPMC_DMA        { 0, 0 }
 143 #define CLCD_IRQ        { IRQ_EB_CLCD, NO_IRQ }
 144 #define 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 WATCHDOG_IRQ    { IRQ_EB_WDOG, NO_IRQ }
 154 #define WATCHDOG_DMA    { 0, 0 }
 155 #define GPIO0_IRQ       { IRQ_EB_GPIO0, NO_IRQ }
 156 #define GPIO0_DMA       { 0, 0 }
 157 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 158 #define GPIO1_DMA       { 0, 0 }
 159 #define RTC_IRQ         { IRQ_EB_RTC, NO_IRQ }
 160 #define 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 UART0_IRQ       { IRQ_EB_UART0, NO_IRQ }
 168 #define UART0_DMA       { 15, 14 }
 169 #define UART1_IRQ       { IRQ_EB_UART1, NO_IRQ }
 170 #define UART1_DMA       { 13, 12 }
 171 #define UART2_IRQ       { IRQ_EB_UART2, NO_IRQ }
 172 #define UART2_DMA       { 11, 10 }
 173 #define UART3_IRQ       { IRQ_EB_UART3, NO_IRQ }
 174 #define UART3_DMA       { 0x86, 0x87 }
 175 #define SSP_IRQ         { IRQ_EB_SSP, NO_IRQ }
 176 #define 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", UART3,    NULL);
 184
 185 /* DevChip Primecells */
 186 AMBA_DEVICE(smc,   "dev:00",  SMC,      NULL);
 187 AMBA_DEVICE(clcd,  "dev:20",  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",  WATCHDOG, NULL);
 191 AMBA_DEVICE(gpio0, "dev:e4",  GPIO0,    NULL);
 192 AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    NULL);
 193 AMBA_DEVICE(gpio2, "dev:e6",  GPIO2,    NULL);
 194 AMBA_DEVICE(rtc,   "dev:e8",  RTC,      NULL);
 195 AMBA_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 196 AMBA_DEVICE(uart0, "dev:f1",  UART0,    NULL);
 197 AMBA_DEVICE(uart1, "dev:f2",  UART1,    NULL);
 198 AMBA_DEVICE(uart2, "dev:f3",  UART2,    NULL);
 199 AMBA_DEVICE(ssp0,  "dev:f4",  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
 227 static struct resource realview_eb_smc91x_resources[] = {
 228         [0] = {
 229                 .start          = REALVIEW_ETH_BASE,
 230                 .end            = REALVIEW_ETH_BASE + SZ_64K - 1,
 231                 .flags          = IORESOURCE_MEM,
 232         },
 233         [1] = {
 234                 .start          = IRQ_EB_ETH,
 235                 .end            = IRQ_EB_ETH,
 236                 .flags          = IORESOURCE_IRQ,
 237         },
 238 };
 239
 240 static struct platform_device realview_eb_smc91x_device = {
 241         .name           = "smc91x",
 242         .id             = 0,
 243         .num_resources  = ARRAY_SIZE(realview_eb_smc91x_resources),
 244         .resource       = realview_eb_smc91x_resources,
 245 };
 246
 247 static void __init gic_init_irq(void)
 248 {
 249         if (core_tile_eb11mp()) {
 250                 unsigned int pldctrl;
 251
 252                 /* new irq mode */
 253                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 254                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 255                 pldctrl |= 0x00800000;
 256                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 257                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 258
 259                 /* core tile GIC, primary */
 260                 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
 261                 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
 262                 gic_cpu_init(0, gic_cpu_base_addr);
 263
 264 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 265                 /* board GIC, secondary */
 266                 gic_dist_init(1, __io_address(REALVIEW_GIC_DIST_BASE), 64);
 267                 gic_cpu_init(1, __io_address(REALVIEW_GIC_CPU_BASE));
 268                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 269 #endif
 270         } else {
 271                 /* board GIC, primary */
 272                 gic_cpu_base_addr = __io_address(REALVIEW_GIC_CPU_BASE);
 273                 gic_dist_init(0, __io_address(REALVIEW_GIC_DIST_BASE), 29);
 274                 gic_cpu_init(0, gic_cpu_base_addr);
 275         }
 276 }
 277
 278 /*
 279  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 280  */
 281 static void realview_eb11mp_fixup(void)
 282 {
 283         /* AMBA devices */
 284         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 285         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 286         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 287         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 288         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 289         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 290         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 291         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 292         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 293         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 294         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 295         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 296         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 297         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 298         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 299         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 300         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 301         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 302
 303         /* platform devices */
 304         realview_eb_smc91x_resources[1].start   = IRQ_EB11MP_ETH;
 305         realview_eb_smc91x_resources[1].end     = IRQ_EB11MP_ETH;
 306 }
 307
 308 static void __init realview_eb_timer_init(void)
 309 {
 310         unsigned int timer_irq;
 311
 312         if (core_tile_eb11mp()) {
 313 #ifdef CONFIG_LOCAL_TIMERS
 314                 twd_base_addr = __io_address(REALVIEW_EB11MP_TWD_BASE);
 315                 twd_size = REALVIEW_EB11MP_TWD_SIZE;
 316 #endif
 317                 timer_irq = IRQ_EB11MP_TIMER0_1;
 318         } else
 319                 timer_irq = IRQ_EB_TIMER0_1;
 320
 321         realview_timer_init(timer_irq);
 322 }
 323
 324 static struct sys_timer realview_eb_timer = {
 325         .init           = realview_eb_timer_init,
 326 };
 327
 328 static void __init realview_eb_init(void)
 329 {
 330         int i;
 331
 332         if (core_tile_eb11mp()) {
 333                 realview_eb11mp_fixup();
 334
 335                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 336                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 337                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 338         }
 339
 340         clk_register(&realview_clcd_clk);
 341
 342         platform_device_register(&realview_flash_device);
 343         platform_device_register(&realview_eb_smc91x_device);
 344         platform_device_register(&realview_i2c_device);
 345
 346         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 347                 struct amba_device *d = amba_devs[i];
 348                 amba_device_register(d, &iomem_resource);
 349         }
 350
 351 #ifdef CONFIG_LEDS
 352         leds_event = realview_leds_event;
 353 #endif
 354 }
 355
 356 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 357         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 358         .phys_io        = REALVIEW_UART0_BASE,
 359         .io_pg_offst    = (IO_ADDRESS(REALVIEW_UART0_BASE) >> 18) & 0xfffc,
 360         .boot_params    = 0x00000100,
 361         .map_io         = realview_eb_map_io,
 362         .init_irq       = gic_init_irq,
 363         .timer          = &realview_eb_timer,
 364         .init_machine   = realview_eb_init,
 365 MACHINE_END