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/amba/pl061.h>
  27 #include <linux/amba/mmci.h>
  28 #include <linux/amba/pl022.h>
  29 #include <linux/io.h>
  30
  31 #include <asm/irq.h>
  32 #include <asm/leds.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/pmu.h>
  35 #include <asm/pgtable.h>
  36 #include <asm/hardware/gic.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/time.h>
  41
  42 #include <mach/hardware.h>
  43 #include <mach/board-pba8.h>
  44 #include <mach/irqs.h>
  45
  46 #include "core.h"
  47
  48 static struct map_desc realview_pba8_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_PBA8_GIC_CPU_BASE),
  56                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
  57                 .length         = SZ_4K,
  58                 .type           = MT_DEVICE,
  59         }, {
  60                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
  61                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_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_PBA8_TIMER0_1_BASE),
  71                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
  72                 .length         = SZ_4K,
  73                 .type           = MT_DEVICE,
  74         }, {
  75                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
  76                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER2_3_BASE),
  77                 .length         = SZ_4K,
  78                 .type           = MT_DEVICE,
  79         },
  80 #ifdef CONFIG_PCI
  81         {
  82                 .virtual        = PCIX_UNIT_BASE,
  83                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_PCI_BASE),
  84                 .length         = REALVIEW_PBA8_PCI_BASE_SIZE,
  85                 .type           = MT_DEVICE
  86         },
  87 #endif
  88 #ifdef CONFIG_DEBUG_LL
  89         {
  90                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
  91                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
  92                 .length         = SZ_4K,
  93                 .type           = MT_DEVICE,
  94         },
  95 #endif
  96 };
  97
  98 static void __init realview_pba8_map_io(void)
  99 {
 100         iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
 101 }
 102
 103 static struct pl061_platform_data gpio0_plat_data = {
 104         .gpio_base      = 0,
 105         .irq_base       = -1,
 106 };
 107
 108 static struct pl061_platform_data gpio1_plat_data = {
 109         .gpio_base      = 8,
 110         .irq_base       = -1,
 111 };
 112
 113 static struct pl061_platform_data gpio2_plat_data = {
 114         .gpio_base      = 16,
 115         .irq_base       = -1,
 116 };
 117
 118 static struct pl022_ssp_controller ssp0_plat_data = {
 119         .bus_id = 0,
 120         .enable_dma = 0,
 121         .num_chipselect = 1,
 122 };
 123
 124 /*
 125  * RealView PBA8Core AMBA devices
 126  */
 127
 128 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2, NO_IRQ }
 129 #define GPIO2_DMA               { 0, 0 }
 130 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3, NO_IRQ }
 131 #define GPIO3_DMA               { 0, 0 }
 132 #define AACI_IRQ                { IRQ_PBA8_AACI, NO_IRQ }
 133 #define AACI_DMA                { 0x80, 0x81 }
 134 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 135 #define MMCI0_DMA               { 0x84, 0 }
 136 #define KMI0_IRQ                { IRQ_PBA8_KMI0, NO_IRQ }
 137 #define KMI0_DMA                { 0, 0 }
 138 #define KMI1_IRQ                { IRQ_PBA8_KMI1, NO_IRQ }
 139 #define KMI1_DMA                { 0, 0 }
 140 #define PBA8_SMC_IRQ            { NO_IRQ, NO_IRQ }
 141 #define PBA8_SMC_DMA            { 0, 0 }
 142 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
 143 #define MPMC_DMA                { 0, 0 }
 144 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD, NO_IRQ }
 145 #define PBA8_CLCD_DMA           { 0, 0 }
 146 #define DMAC_IRQ                { IRQ_PBA8_DMAC, NO_IRQ }
 147 #define DMAC_DMA                { 0, 0 }
 148 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
 149 #define SCTL_DMA                { 0, 0 }
 150 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG, NO_IRQ }
 151 #define PBA8_WATCHDOG_DMA       { 0, 0 }
 152 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0, NO_IRQ }
 153 #define PBA8_GPIO0_DMA          { 0, 0 }
 154 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1, NO_IRQ }
 155 #define GPIO1_DMA               { 0, 0 }
 156 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC, NO_IRQ }
 157 #define PBA8_RTC_DMA            { 0, 0 }
 158 #define SCI_IRQ                 { IRQ_PBA8_SCI, NO_IRQ }
 159 #define SCI_DMA                 { 7, 6 }
 160 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0, NO_IRQ }
 161 #define PBA8_UART0_DMA          { 15, 14 }
 162 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1, NO_IRQ }
 163 #define PBA8_UART1_DMA          { 13, 12 }
 164 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2, NO_IRQ }
 165 #define PBA8_UART2_DMA          { 11, 10 }
 166 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3, NO_IRQ }
 167 #define PBA8_UART3_DMA          { 0x86, 0x87 }
 168 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP, NO_IRQ }
 169 #define PBA8_SSP_DMA            { 9, 8 }
 170
 171 /* FPGA Primecells */
 172 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 173 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 174 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 175 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 176 AMBA_DEVICE(uart3,      "fpga:uart3",   PBA8_UART3,     NULL);
 177
 178 /* DevChip Primecells */
 179 AMBA_DEVICE(smc,        "dev:smc",      PBA8_SMC,       NULL);
 180 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 181 AMBA_DEVICE(wdog,       "dev:wdog",     PBA8_WATCHDOG, NULL);
 182 AMBA_DEVICE(gpio0,      "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 183 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 184 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 185 AMBA_DEVICE(rtc,        "dev:rtc",      PBA8_RTC,       NULL);
 186 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 187 AMBA_DEVICE(uart0,      "dev:uart0",    PBA8_UART0,     NULL);
 188 AMBA_DEVICE(uart1,      "dev:uart1",    PBA8_UART1,     NULL);
 189 AMBA_DEVICE(uart2,      "dev:uart2",    PBA8_UART2,     NULL);
 190 AMBA_DEVICE(ssp0,       "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
 191
 192 /* Primecells on the NEC ISSP chip */
 193 AMBA_DEVICE(clcd,       "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 194 AMBA_DEVICE(dmac,       "issp:dmac",    DMAC,           NULL);
 195
 196 static struct amba_device *amba_devs[] __initdata = {
 197         &dmac_device,
 198         &uart0_device,
 199         &uart1_device,
 200         &uart2_device,
 201         &uart3_device,
 202         &smc_device,
 203         &clcd_device,
 204         &sctl_device,
 205         &wdog_device,
 206         &gpio0_device,
 207         &gpio1_device,
 208         &gpio2_device,
 209         &rtc_device,
 210         &sci0_device,
 211         &ssp0_device,
 212         &aaci_device,
 213         &mmc0_device,
 214         &kmi0_device,
 215         &kmi1_device,
 216 };
 217
 218 /*
 219  * RealView PB-A8 platform devices
 220  */
 221 static struct resource realview_pba8_flash_resource[] = {
 222         [0] = {
 223                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 224                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 225                 .flags          = IORESOURCE_MEM,
 226         },
 227         [1] = {
 228                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 229                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 230                 .flags          = IORESOURCE_MEM,
 231         },
 232 };
 233
 234 static struct resource realview_pba8_smsc911x_resources[] = {
 235         [0] = {
 236                 .start          = REALVIEW_PBA8_ETH_BASE,
 237                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 238                 .flags          = IORESOURCE_MEM,
 239         },
 240         [1] = {
 241                 .start          = IRQ_PBA8_ETH,
 242                 .end            = IRQ_PBA8_ETH,
 243                 .flags          = IORESOURCE_IRQ,
 244         },
 245 };
 246
 247 static struct resource realview_pba8_isp1761_resources[] = {
 248         [0] = {
 249                 .start          = REALVIEW_PBA8_USB_BASE,
 250                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 251                 .flags          = IORESOURCE_MEM,
 252         },
 253         [1] = {
 254                 .start          = IRQ_PBA8_USB,
 255                 .end            = IRQ_PBA8_USB,
 256                 .flags          = IORESOURCE_IRQ,
 257         },
 258 };
 259
 260 static struct resource pmu_resource = {
 261         .start          = IRQ_PBA8_PMU,
 262         .end            = IRQ_PBA8_PMU,
 263         .flags          = IORESOURCE_IRQ,
 264 };
 265
 266 static struct platform_device pmu_device = {
 267         .name                   = "arm-pmu",
 268         .id                     = ARM_PMU_DEVICE_CPU,
 269         .num_resources          = 1,
 270         .resource               = &pmu_resource,
 271 };
 272
 273 static void __init gic_init_irq(void)
 274 {
 275         /* ARM PB-A8 on-board GIC */
 276         gic_cpu_base_addr = __io_address(REALVIEW_PBA8_GIC_CPU_BASE);
 277         gic_dist_init(0, __io_address(REALVIEW_PBA8_GIC_DIST_BASE), IRQ_PBA8_GIC_START);
 278         gic_cpu_init(0, __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 279 }
 280
 281 static void __init realview_pba8_timer_init(void)
 282 {
 283         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 284         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 285         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 286         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 287
 288         realview_timer_init(IRQ_PBA8_TIMER0_1);
 289 }
 290
 291 static struct sys_timer realview_pba8_timer = {
 292         .init           = realview_pba8_timer_init,
 293 };
 294
 295 static void realview_pba8_reset(char mode)
 296 {
 297         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 298         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 299
 300         /*
 301          * To reset, we hit the on-board reset register
 302          * in the system FPGA
 303          */
 304         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 305         __raw_writel(0x0000, reset_ctrl);
 306         __raw_writel(0x0004, reset_ctrl);
 307 }
 308
 309 static void __init realview_pba8_init(void)
 310 {
 311         int i;
 312
 313         realview_flash_register(realview_pba8_flash_resource,
 314                                 ARRAY_SIZE(realview_pba8_flash_resource));
 315         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 316         platform_device_register(&realview_i2c_device);
 317         platform_device_register(&realview_cf_device);
 318         realview_usb_register(realview_pba8_isp1761_resources);
 319         platform_device_register(&pmu_device);
 320
 321         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 322                 struct amba_device *d = amba_devs[i];
 323                 amba_device_register(d, &iomem_resource);
 324         }
 325
 326 #ifdef CONFIG_LEDS
 327         leds_event = realview_leds_event;
 328 #endif
 329         realview_reset = realview_pba8_reset;
 330 }
 331
 332 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 333         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 334         .boot_params    = PHYS_OFFSET + 0x00000100,
 335         .fixup          = realview_fixup,
 336         .map_io         = realview_pba8_map_io,
 337         .init_irq       = gic_init_irq,
 338         .timer          = &realview_pba8_timer,
 339         .init_machine   = realview_pba8_init,
 340 MACHINE_END