kernel/2.6.29.6-aldebaran-rt/arch/arm/mach-realview/realview_pba8.c

   1 /*
   2  *  linux/arch/arm/mach-realview/realview_pba8.c
   3  *
   4  *  Copyright (C) 2008 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 <asm/irq.h>
  29 #include <asm/leds.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/hardware/gic.h>
  32 #include <asm/hardware/icst307.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/mach/mmc.h>
  37 #include <asm/mach/time.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/board-pba8.h>
  41 #include <mach/irqs.h>
  42
  43 #include "core.h"
  44 #include "clock.h"
  45
  46 static struct map_desc realview_pba8_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_PBA8_GIC_CPU_BASE),
  54                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
  55                 .length         = SZ_4K,
  56                 .type           = MT_DEVICE,
  57         }, {
  58                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
  59                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_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_PBA8_TIMER0_1_BASE),
  69                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
  70                 .length         = SZ_4K,
  71                 .type           = MT_DEVICE,
  72         }, {
  73                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
  74                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_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_PBA8_PCI_BASE),
  82                 .length         = REALVIEW_PBA8_PCI_BASE_SIZE,
  83                 .type           = MT_DEVICE
  84         },
  85 #endif
  86 #ifdef CONFIG_DEBUG_LL
  87         {
  88                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
  89                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
  90                 .length         = SZ_4K,
  91                 .type           = MT_DEVICE,
  92         },
  93 #endif
  94 };
  95
  96 static void __init realview_pba8_map_io(void)
  97 {
  98         iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
  99 }
 100
 101 /*
 102  * RealView PBA8Core AMBA devices
 103  */
 104
 105 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2, NO_IRQ }
 106 #define GPIO2_DMA               { 0, 0 }
 107 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3, NO_IRQ }
 108 #define GPIO3_DMA               { 0, 0 }
 109 #define AACI_IRQ                { IRQ_PBA8_AACI, NO_IRQ }
 110 #define AACI_DMA                { 0x80, 0x81 }
 111 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 112 #define MMCI0_DMA               { 0x84, 0 }
 113 #define KMI0_IRQ                { IRQ_PBA8_KMI0, NO_IRQ }
 114 #define KMI0_DMA                { 0, 0 }
 115 #define KMI1_IRQ                { IRQ_PBA8_KMI1, NO_IRQ }
 116 #define KMI1_DMA                { 0, 0 }
 117 #define PBA8_SMC_IRQ            { NO_IRQ, NO_IRQ }
 118 #define PBA8_SMC_DMA            { 0, 0 }
 119 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
 120 #define MPMC_DMA                { 0, 0 }
 121 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD, NO_IRQ }
 122 #define PBA8_CLCD_DMA           { 0, 0 }
 123 #define DMAC_IRQ                { IRQ_PBA8_DMAC, NO_IRQ }
 124 #define DMAC_DMA                { 0, 0 }
 125 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
 126 #define SCTL_DMA                { 0, 0 }
 127 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG, NO_IRQ }
 128 #define PBA8_WATCHDOG_DMA       { 0, 0 }
 129 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0, NO_IRQ }
 130 #define PBA8_GPIO0_DMA          { 0, 0 }
 131 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1, NO_IRQ }
 132 #define GPIO1_DMA               { 0, 0 }
 133 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC, NO_IRQ }
 134 #define PBA8_RTC_DMA            { 0, 0 }
 135 #define SCI_IRQ                 { IRQ_PBA8_SCI, NO_IRQ }
 136 #define SCI_DMA                 { 7, 6 }
 137 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0, NO_IRQ }
 138 #define PBA8_UART0_DMA          { 15, 14 }
 139 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1, NO_IRQ }
 140 #define PBA8_UART1_DMA          { 13, 12 }
 141 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2, NO_IRQ }
 142 #define PBA8_UART2_DMA          { 11, 10 }
 143 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3, NO_IRQ }
 144 #define PBA8_UART3_DMA          { 0x86, 0x87 }
 145 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP, NO_IRQ }
 146 #define PBA8_SSP_DMA            { 9, 8 }
 147
 148 /* FPGA Primecells */
 149 AMBA_DEVICE(aaci,       "fpga:04",      AACI,           NULL);
 150 AMBA_DEVICE(mmc0,       "fpga:05",      MMCI0,          &realview_mmc0_plat_data);
 151 AMBA_DEVICE(kmi0,       "fpga:06",      KMI0,           NULL);
 152 AMBA_DEVICE(kmi1,       "fpga:07",      KMI1,           NULL);
 153 AMBA_DEVICE(uart3,      "fpga:09",      PBA8_UART3,     NULL);
 154
 155 /* DevChip Primecells */
 156 AMBA_DEVICE(smc,        "dev:00",       PBA8_SMC,       NULL);
 157 AMBA_DEVICE(sctl,       "dev:e0",       SCTL,           NULL);
 158 AMBA_DEVICE(wdog,       "dev:e1",       PBA8_WATCHDOG, NULL);
 159 AMBA_DEVICE(gpio0,      "dev:e4",       PBA8_GPIO0,     NULL);
 160 AMBA_DEVICE(gpio1,      "dev:e5",       GPIO1,          NULL);
 161 AMBA_DEVICE(gpio2,      "dev:e6",       GPIO2,          NULL);
 162 AMBA_DEVICE(rtc,        "dev:e8",       PBA8_RTC,       NULL);
 163 AMBA_DEVICE(sci0,       "dev:f0",       SCI,            NULL);
 164 AMBA_DEVICE(uart0,      "dev:f1",       PBA8_UART0,     NULL);
 165 AMBA_DEVICE(uart1,      "dev:f2",       PBA8_UART1,     NULL);
 166 AMBA_DEVICE(uart2,      "dev:f3",       PBA8_UART2,     NULL);
 167 AMBA_DEVICE(ssp0,       "dev:f4",       PBA8_SSP,       NULL);
 168
 169 /* Primecells on the NEC ISSP chip */
 170 AMBA_DEVICE(clcd,       "issp:20",      PBA8_CLCD,      &clcd_plat_data);
 171 AMBA_DEVICE(dmac,       "issp:30",      DMAC,           NULL);
 172
 173 static struct amba_device *amba_devs[] __initdata = {
 174         &dmac_device,
 175         &uart0_device,
 176         &uart1_device,
 177         &uart2_device,
 178         &uart3_device,
 179         &smc_device,
 180         &clcd_device,
 181         &sctl_device,
 182         &wdog_device,
 183         &gpio0_device,
 184         &gpio1_device,
 185         &gpio2_device,
 186         &rtc_device,
 187         &sci0_device,
 188         &ssp0_device,
 189         &aaci_device,
 190         &mmc0_device,
 191         &kmi0_device,
 192         &kmi1_device,
 193 };
 194
 195 /*
 196  * RealView PB-A8 platform devices
 197  */
 198 static struct resource realview_pba8_flash_resource[] = {
 199         [0] = {
 200                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 201                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 202                 .flags          = IORESOURCE_MEM,
 203         },
 204         [1] = {
 205                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 206                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 207                 .flags          = IORESOURCE_MEM,
 208         },
 209 };
 210
 211 static struct resource realview_pba8_smsc911x_resources[] = {
 212         [0] = {
 213                 .start          = REALVIEW_PBA8_ETH_BASE,
 214                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 215                 .flags          = IORESOURCE_MEM,
 216         },
 217         [1] = {
 218                 .start          = IRQ_PBA8_ETH,
 219                 .end            = IRQ_PBA8_ETH,
 220                 .flags          = IORESOURCE_IRQ,
 221         },
 222 };
 223
 224 struct resource realview_pba8_cf_resources[] = {
 225         [0] = {
 226                 .start          = REALVIEW_PBA8_CF_BASE,
 227                 .end            = REALVIEW_PBA8_CF_BASE + SZ_4K - 1,
 228                 .flags          = IORESOURCE_MEM,
 229         },
 230         [1] = {
 231                 .start          = REALVIEW_PBA8_CF_MEM_BASE,
 232                 .end            = REALVIEW_PBA8_CF_MEM_BASE + SZ_4K - 1,
 233                 .flags          = IORESOURCE_MEM,
 234         },
 235         [2] = {
 236                 .start          = -1,           /* FIXME: Find correct irq */
 237                 .end            = -1,
 238                 .flags          = IORESOURCE_IRQ,
 239         },
 240 };
 241
 242 struct platform_device realview_pba8_cf_device = {
 243         .name           = "compactflash",
 244         .id             = 0,
 245         .num_resources  = ARRAY_SIZE(realview_pba8_cf_resources),
 246         .resource       = realview_pba8_cf_resources,
 247 };
 248
 249 static void __init gic_init_irq(void)
 250 {
 251         /* ARM PB-A8 on-board GIC */
 252         gic_cpu_base_addr = __io_address(REALVIEW_PBA8_GIC_CPU_BASE);
 253         gic_dist_init(0, __io_address(REALVIEW_PBA8_GIC_DIST_BASE), IRQ_PBA8_GIC_START);
 254         gic_cpu_init(0, __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 255 }
 256
 257 static void __init realview_pba8_timer_init(void)
 258 {
 259         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 260         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 261         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 262         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 263
 264         realview_timer_init(IRQ_PBA8_TIMER0_1);
 265 }
 266
 267 static struct sys_timer realview_pba8_timer = {
 268         .init           = realview_pba8_timer_init,
 269 };
 270
 271 static void __init realview_pba8_init(void)
 272 {
 273         int i;
 274
 275         realview_flash_register(realview_pba8_flash_resource,
 276                                 ARRAY_SIZE(realview_pba8_flash_resource));
 277         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 278         platform_device_register(&realview_i2c_device);
 279         platform_device_register(&realview_pba8_cf_device);
 280
 281         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 282                 struct amba_device *d = amba_devs[i];
 283                 amba_device_register(d, &iomem_resource);
 284         }
 285
 286 #ifdef CONFIG_LEDS
 287         leds_event = realview_leds_event;
 288 #endif
 289 }
 290
 291 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 292         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 293         .phys_io        = REALVIEW_PBA8_UART0_BASE,
 294         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBA8_UART0_BASE) >> 18) & 0xfffc,
 295         .boot_params    = PHYS_OFFSET + 0x00000100,
 296         .map_io         = realview_pba8_map_io,
 297         .init_irq       = gic_init_irq,
 298         .timer          = &realview_pba8_timer,
 299         .init_machine   = realview_pba8_init,
 300 MACHINE_END