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/device.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 GPIO3_IRQ               { IRQ_PBA8_GPIO3, NO_IRQ }
 130 #define AACI_IRQ                { IRQ_PBA8_AACI, NO_IRQ }
 131 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 132 #define KMI0_IRQ                { IRQ_PBA8_KMI0, NO_IRQ }
 133 #define KMI1_IRQ                { IRQ_PBA8_KMI1, NO_IRQ }
 134 #define PBA8_SMC_IRQ            { NO_IRQ, NO_IRQ }
 135 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
 136 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD, NO_IRQ }
 137 #define DMAC_IRQ                { IRQ_PBA8_DMAC, NO_IRQ }
 138 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
 139 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG, NO_IRQ }
 140 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0, NO_IRQ }
 141 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1, NO_IRQ }
 142 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC, NO_IRQ }
 143 #define SCI_IRQ                 { IRQ_PBA8_SCI, NO_IRQ }
 144 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0, NO_IRQ }
 145 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1, NO_IRQ }
 146 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2, NO_IRQ }
 147 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3, NO_IRQ }
 148 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP, NO_IRQ }
 149
 150 /* FPGA Primecells */
 151 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 152 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 153 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 154 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 155 AMBA_DEVICE(uart3,      "fpga:uart3",   PBA8_UART3,     NULL);
 156
 157 /* DevChip Primecells */
 158 AMBA_DEVICE(smc,        "dev:smc",      PBA8_SMC,       NULL);
 159 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 160 AMBA_DEVICE(wdog,       "dev:wdog",     PBA8_WATCHDOG, NULL);
 161 AMBA_DEVICE(gpio0,      "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 162 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 163 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 164 AMBA_DEVICE(rtc,        "dev:rtc",      PBA8_RTC,       NULL);
 165 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 166 AMBA_DEVICE(uart0,      "dev:uart0",    PBA8_UART0,     NULL);
 167 AMBA_DEVICE(uart1,      "dev:uart1",    PBA8_UART1,     NULL);
 168 AMBA_DEVICE(uart2,      "dev:uart2",    PBA8_UART2,     NULL);
 169 AMBA_DEVICE(ssp0,       "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
 170
 171 /* Primecells on the NEC ISSP chip */
 172 AMBA_DEVICE(clcd,       "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 173 AMBA_DEVICE(dmac,       "issp:dmac",    DMAC,           NULL);
 174
 175 static struct amba_device *amba_devs[] __initdata = {
 176         &dmac_device,
 177         &uart0_device,
 178         &uart1_device,
 179         &uart2_device,
 180         &uart3_device,
 181         &smc_device,
 182         &clcd_device,
 183         &sctl_device,
 184         &wdog_device,
 185         &gpio0_device,
 186         &gpio1_device,
 187         &gpio2_device,
 188         &rtc_device,
 189         &sci0_device,
 190         &ssp0_device,
 191         &aaci_device,
 192         &mmc0_device,
 193         &kmi0_device,
 194         &kmi1_device,
 195 };
 196
 197 /*
 198  * RealView PB-A8 platform devices
 199  */
 200 static struct resource realview_pba8_flash_resource[] = {
 201         [0] = {
 202                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 203                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 204                 .flags          = IORESOURCE_MEM,
 205         },
 206         [1] = {
 207                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 208                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 209                 .flags          = IORESOURCE_MEM,
 210         },
 211 };
 212
 213 static struct resource realview_pba8_smsc911x_resources[] = {
 214         [0] = {
 215                 .start          = REALVIEW_PBA8_ETH_BASE,
 216                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 217                 .flags          = IORESOURCE_MEM,
 218         },
 219         [1] = {
 220                 .start          = IRQ_PBA8_ETH,
 221                 .end            = IRQ_PBA8_ETH,
 222                 .flags          = IORESOURCE_IRQ,
 223         },
 224 };
 225
 226 static struct resource realview_pba8_isp1761_resources[] = {
 227         [0] = {
 228                 .start          = REALVIEW_PBA8_USB_BASE,
 229                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 230                 .flags          = IORESOURCE_MEM,
 231         },
 232         [1] = {
 233                 .start          = IRQ_PBA8_USB,
 234                 .end            = IRQ_PBA8_USB,
 235                 .flags          = IORESOURCE_IRQ,
 236         },
 237 };
 238
 239 static struct resource pmu_resource = {
 240         .start          = IRQ_PBA8_PMU,
 241         .end            = IRQ_PBA8_PMU,
 242         .flags          = IORESOURCE_IRQ,
 243 };
 244
 245 static struct platform_device pmu_device = {
 246         .name                   = "arm-pmu",
 247         .id                     = ARM_PMU_DEVICE_CPU,
 248         .num_resources          = 1,
 249         .resource               = &pmu_resource,
 250 };
 251
 252 static void __init gic_init_irq(void)
 253 {
 254         /* ARM PB-A8 on-board GIC */
 255         gic_init(0, IRQ_PBA8_GIC_START,
 256                  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
 257                  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 258 }
 259
 260 static void __init realview_pba8_timer_init(void)
 261 {
 262         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 263         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 264         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 265         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 266
 267         realview_timer_init(IRQ_PBA8_TIMER0_1);
 268 }
 269
 270 static struct sys_timer realview_pba8_timer = {
 271         .init           = realview_pba8_timer_init,
 272 };
 273
 274 static void realview_pba8_reset(char mode)
 275 {
 276         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 277         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 278
 279         /*
 280          * To reset, we hit the on-board reset register
 281          * in the system FPGA
 282          */
 283         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 284         __raw_writel(0x0000, reset_ctrl);
 285         __raw_writel(0x0004, reset_ctrl);
 286 }
 287
 288 static void __init realview_pba8_init(void)
 289 {
 290         int i;
 291
 292         realview_flash_register(realview_pba8_flash_resource,
 293                                 ARRAY_SIZE(realview_pba8_flash_resource));
 294         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 295         platform_device_register(&realview_i2c_device);
 296         platform_device_register(&realview_cf_device);
 297         realview_usb_register(realview_pba8_isp1761_resources);
 298         platform_device_register(&pmu_device);
 299
 300         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 301                 struct amba_device *d = amba_devs[i];
 302                 amba_device_register(d, &iomem_resource);
 303         }
 304
 305 #ifdef CONFIG_LEDS
 306         leds_event = realview_leds_event;
 307 #endif
 308         realview_reset = realview_pba8_reset;
 309 }
 310
 311 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 312         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 313         .atag_offset    = 0x100,
 314         .fixup          = realview_fixup,
 315         .map_io         = realview_pba8_map_io,
 316         .init_early     = realview_init_early,
 317         .init_irq       = gic_init_irq,
 318         .timer          = &realview_pba8_timer,
 319         .init_machine   = realview_pba8_init,
 320 #ifdef CONFIG_ZONE_DMA
 321         .dma_zone_size  = SZ_256M,
 322 #endif
 323 MACHINE_END