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
  40 #include <asm/arch/board-eb.h>
  41 #include <asm/arch/irqs.h>
  42
  43 #include "core.h"
  44 #include "clock.h"
  45
  46 static struct map_desc realview_eb_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_GIC_CPU_BASE),
  54                 .pfn            = __phys_to_pfn(REALVIEW_GIC_CPU_BASE),
  55                 .length         = SZ_4K,
  56                 .type           = MT_DEVICE,
  57         }, {
  58                 .virtual        = IO_ADDRESS(REALVIEW_GIC_DIST_BASE),
  59                 .pfn            = __phys_to_pfn(REALVIEW_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_TIMER0_1_BASE),
  69                 .pfn            = __phys_to_pfn(REALVIEW_TIMER0_1_BASE),
  70                 .length         = SZ_4K,
  71                 .type           = MT_DEVICE,
  72         }, {
  73                 .virtual        = IO_ADDRESS(REALVIEW_TIMER2_3_BASE),
  74                 .pfn            = __phys_to_pfn(REALVIEW_TIMER2_3_BASE),
  75                 .length         = SZ_4K,
  76                 .type           = MT_DEVICE,
  77         },
  78 #ifdef CONFIG_DEBUG_LL
  79         {
  80                 .virtual        = IO_ADDRESS(REALVIEW_UART0_BASE),
  81                 .pfn            = __phys_to_pfn(REALVIEW_UART0_BASE),
  82                 .length         = SZ_4K,
  83                 .type           = MT_DEVICE,
  84         }
  85 #endif
  86 };
  87
  88 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
  89         {
  90                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
  91                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
  92                 .length         = SZ_4K,
  93                 .type           = MT_DEVICE,
  94         }, {
  95                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
  96                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
  97                 .length         = SZ_4K,
  98                 .type           = MT_DEVICE,
  99         }, {
 100                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
 101                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
 102                 .length         = SZ_8K,
 103                 .type           = MT_DEVICE,
 104         }
 105 };
 106
 107 static void __init realview_eb_map_io(void)
 108 {
 109         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
 110         if (core_tile_eb11mp())
 111                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
 112 }
 113
 114 /*
 115  * RealView EB AMBA devices
 116  */
 117
 118 /*
 119  * These devices are connected via the core APB bridge
 120  */
 121 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
 122 #define GPIO2_DMA       { 0, 0 }
 123 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
 124 #define GPIO3_DMA       { 0, 0 }
 125
 126 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
 127 #define AACI_DMA        { 0x80, 0x81 }
 128 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
 129 #define MMCI0_DMA       { 0x84, 0 }
 130 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
 131 #define KMI0_DMA        { 0, 0 }
 132 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
 133 #define KMI1_DMA        { 0, 0 }
 134
 135 /*
 136  * These devices are connected directly to the multi-layer AHB switch
 137  */
 138 #define SMC_IRQ         { NO_IRQ, NO_IRQ }
 139 #define SMC_DMA         { 0, 0 }
 140 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 141 #define MPMC_DMA        { 0, 0 }
 142 #define CLCD_IRQ        { IRQ_EB_CLCD, NO_IRQ }
 143 #define CLCD_DMA        { 0, 0 }
 144 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
 145 #define DMAC_DMA        { 0, 0 }
 146
 147 /*
 148  * These devices are connected via the core APB bridge
 149  */
 150 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 151 #define SCTL_DMA        { 0, 0 }
 152 #define WATCHDOG_IRQ    { IRQ_EB_WDOG, NO_IRQ }
 153 #define WATCHDOG_DMA    { 0, 0 }
 154 #define GPIO0_IRQ       { IRQ_EB_GPIO0, NO_IRQ }
 155 #define GPIO0_DMA       { 0, 0 }
 156 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
 157 #define GPIO1_DMA       { 0, 0 }
 158 #define RTC_IRQ         { IRQ_EB_RTC, NO_IRQ }
 159 #define RTC_DMA         { 0, 0 }
 160
 161 /*
 162  * These devices are connected via the DMA APB bridge
 163  */
 164 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
 165 #define SCI_DMA         { 7, 6 }
 166 #define UART0_IRQ       { IRQ_EB_UART0, NO_IRQ }
 167 #define UART0_DMA       { 15, 14 }
 168 #define UART1_IRQ       { IRQ_EB_UART1, NO_IRQ }
 169 #define UART1_DMA       { 13, 12 }
 170 #define UART2_IRQ       { IRQ_EB_UART2, NO_IRQ }
 171 #define UART2_DMA       { 11, 10 }
 172 #define UART3_IRQ       { IRQ_EB_UART3, NO_IRQ }
 173 #define UART3_DMA       { 0x86, 0x87 }
 174 #define SSP_IRQ         { IRQ_EB_SSP, NO_IRQ }
 175 #define SSP_DMA         { 9, 8 }
 176
 177 /* FPGA Primecells */
 178 AMBA_DEVICE(aaci,  "fpga:04", AACI,     NULL);
 179 AMBA_DEVICE(mmc0,  "fpga:05", MMCI0,    &realview_mmc0_plat_data);
 180 AMBA_DEVICE(kmi0,  "fpga:06", KMI0,     NULL);
 181 AMBA_DEVICE(kmi1,  "fpga:07", KMI1,     NULL);
 182 AMBA_DEVICE(uart3, "fpga:09", UART3,    NULL);
 183
 184 /* DevChip Primecells */
 185 AMBA_DEVICE(smc,   "dev:00",  SMC,      NULL);
 186 AMBA_DEVICE(clcd,  "dev:20",  CLCD,     &clcd_plat_data);
 187 AMBA_DEVICE(dmac,  "dev:30",  DMAC,     NULL);
 188 AMBA_DEVICE(sctl,  "dev:e0",  SCTL,     NULL);
 189 AMBA_DEVICE(wdog,  "dev:e1",  WATCHDOG, NULL);
 190 AMBA_DEVICE(gpio0, "dev:e4",  GPIO0,    NULL);
 191 AMBA_DEVICE(gpio1, "dev:e5",  GPIO1,    NULL);
 192 AMBA_DEVICE(gpio2, "dev:e6",  GPIO2,    NULL);
 193 AMBA_DEVICE(rtc,   "dev:e8",  RTC,      NULL);
 194 AMBA_DEVICE(sci0,  "dev:f0",  SCI,      NULL);
 195 AMBA_DEVICE(uart0, "dev:f1",  UART0,    NULL);
 196 AMBA_DEVICE(uart1, "dev:f2",  UART1,    NULL);
 197 AMBA_DEVICE(uart2, "dev:f3",  UART2,    NULL);
 198 AMBA_DEVICE(ssp0,  "dev:f4",  SSP,      NULL);
 199
 200 static struct amba_device *amba_devs[] __initdata = {
 201         &dmac_device,
 202         &uart0_device,
 203         &uart1_device,
 204         &uart2_device,
 205         &uart3_device,
 206         &smc_device,
 207         &clcd_device,
 208         &sctl_device,
 209         &wdog_device,
 210         &gpio0_device,
 211         &gpio1_device,
 212         &gpio2_device,
 213         &rtc_device,
 214         &sci0_device,
 215         &ssp0_device,
 216         &aaci_device,
 217         &mmc0_device,
 218         &kmi0_device,
 219         &kmi1_device,
 220 };
 221
 222 /*
 223  * RealView EB platform devices
 224  */
 225
 226 static struct resource realview_eb_smc91x_resources[] = {
 227         [0] = {
 228                 .start          = REALVIEW_ETH_BASE,
 229                 .end            = REALVIEW_ETH_BASE + SZ_64K - 1,
 230                 .flags          = IORESOURCE_MEM,
 231         },
 232         [1] = {
 233                 .start          = IRQ_EB_ETH,
 234                 .end            = IRQ_EB_ETH,
 235                 .flags          = IORESOURCE_IRQ,
 236         },
 237 };
 238
 239 static struct platform_device realview_eb_smc91x_device = {
 240         .name           = "smc91x",
 241         .id             = 0,
 242         .num_resources  = ARRAY_SIZE(realview_eb_smc91x_resources),
 243         .resource       = realview_eb_smc91x_resources,
 244 };
 245
 246 static void __init gic_init_irq(void)
 247 {
 248         if (core_tile_eb11mp()) {
 249                 unsigned int pldctrl;
 250
 251                 /* new irq mode */
 252                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
 253                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 254                 pldctrl |= 0x00800000;
 255                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
 256                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
 257
 258                 /* core tile GIC, primary */
 259                 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
 260                 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
 261                 gic_cpu_init(0, gic_cpu_base_addr);
 262
 263 #ifndef CONFIG_REALVIEW_MPCORE_REVB
 264                 /* board GIC, secondary */
 265                 gic_dist_init(1, __io_address(REALVIEW_GIC_DIST_BASE), 64);
 266                 gic_cpu_init(1, __io_address(REALVIEW_GIC_CPU_BASE));
 267                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 268 #endif
 269         } else {
 270                 /* board GIC, primary */
 271                 gic_cpu_base_addr = __io_address(REALVIEW_GIC_CPU_BASE);
 272                 gic_dist_init(0, __io_address(REALVIEW_GIC_DIST_BASE), 29);
 273                 gic_cpu_init(0, gic_cpu_base_addr);
 274         }
 275 }
 276
 277 /*
 278  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 279  */
 280 static void realview_eb11mp_fixup(void)
 281 {
 282         /* AMBA devices */
 283         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
 284         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
 285         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
 286         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
 287         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
 288         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
 289         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
 290         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
 291         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
 292         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
 293         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
 294         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
 295         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
 296         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
 297         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
 298         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
 299         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
 300         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
 301
 302         /* platform devices */
 303         realview_eb_smc91x_resources[1].start   = IRQ_EB11MP_ETH;
 304         realview_eb_smc91x_resources[1].end     = IRQ_EB11MP_ETH;
 305 }
 306
 307 static void __init realview_eb_init(void)
 308 {
 309         int i;
 310
 311         if (core_tile_eb11mp()) {
 312                 realview_eb11mp_fixup();
 313
 314                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
 315                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
 316                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
 317         }
 318
 319         clk_register(&realview_clcd_clk);
 320
 321         platform_device_register(&realview_flash_device);
 322         platform_device_register(&realview_eb_smc91x_device);
 323         platform_device_register(&realview_i2c_device);
 324
 325         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 326                 struct amba_device *d = amba_devs[i];
 327                 amba_device_register(d, &iomem_resource);
 328         }
 329
 330 #ifdef CONFIG_LEDS
 331         leds_event = realview_leds_event;
 332 #endif
 333 }
 334
 335 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 336         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 337         .phys_io        = REALVIEW_UART0_BASE,
 338         .io_pg_offst    = (IO_ADDRESS(REALVIEW_UART0_BASE) >> 18) & 0xfffc,
 339         .boot_params    = 0x00000100,
 340         .map_io         = realview_eb_map_io,
 341         .init_irq       = gic_init_irq,
 342         .timer          = &realview_timer,
 343         .init_machine   = realview_eb_init,
 344 MACHINE_END