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/mach-types.h>
  33 #include <asm/pgtable.h>
  34 #include <asm/hardware/gic.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/time.h>
  39
  40 #include <mach/hardware.h>
  41 #include <mach/board-pba8.h>
  42 #include <mach/irqs.h>
  43
  44 #include "core.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 static struct pl061_platform_data gpio0_plat_data = {
 102         .gpio_base      = 0,
 103 };
 104
 105 static struct pl061_platform_data gpio1_plat_data = {
 106         .gpio_base      = 8,
 107 };
 108
 109 static struct pl061_platform_data gpio2_plat_data = {
 110         .gpio_base      = 16,
 111 };
 112
 113 static struct pl022_ssp_controller ssp0_plat_data = {
 114         .bus_id = 0,
 115         .enable_dma = 0,
 116         .num_chipselect = 1,
 117 };
 118
 119 /*
 120  * RealView PBA8Core AMBA devices
 121  */
 122
 123 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2 }
 124 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3 }
 125 #define AACI_IRQ                { IRQ_PBA8_AACI }
 126 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 127 #define KMI0_IRQ                { IRQ_PBA8_KMI0 }
 128 #define KMI1_IRQ                { IRQ_PBA8_KMI1 }
 129 #define PBA8_SMC_IRQ            { }
 130 #define MPMC_IRQ                { }
 131 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD }
 132 #define DMAC_IRQ                { IRQ_PBA8_DMAC }
 133 #define SCTL_IRQ                { }
 134 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG }
 135 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0 }
 136 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1 }
 137 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC }
 138 #define SCI_IRQ                 { IRQ_PBA8_SCI }
 139 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0 }
 140 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1 }
 141 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2 }
 142 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3 }
 143 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP }
 144
 145 /* FPGA Primecells */
 146 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 147 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 148 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 149 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 150 APB_DEVICE(uart3,       "fpga:uart3",   PBA8_UART3,     NULL);
 151
 152 /* DevChip Primecells */
 153 AHB_DEVICE(smc,         "dev:smc",      PBA8_SMC,       NULL);
 154 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 155 APB_DEVICE(wdog,        "dev:wdog",     PBA8_WATCHDOG, NULL);
 156 APB_DEVICE(gpio0,       "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 157 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 158 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 159 APB_DEVICE(rtc,         "dev:rtc",      PBA8_RTC,       NULL);
 160 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 161 APB_DEVICE(uart0,       "dev:uart0",    PBA8_UART0,     NULL);
 162 APB_DEVICE(uart1,       "dev:uart1",    PBA8_UART1,     NULL);
 163 APB_DEVICE(uart2,       "dev:uart2",    PBA8_UART2,     NULL);
 164 APB_DEVICE(ssp0,        "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
 165
 166 /* Primecells on the NEC ISSP chip */
 167 AHB_DEVICE(clcd,        "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 168 AHB_DEVICE(dmac,        "issp:dmac",    DMAC,           NULL);
 169
 170 static struct amba_device *amba_devs[] __initdata = {
 171         &dmac_device,
 172         &uart0_device,
 173         &uart1_device,
 174         &uart2_device,
 175         &uart3_device,
 176         &smc_device,
 177         &clcd_device,
 178         &sctl_device,
 179         &wdog_device,
 180         &gpio0_device,
 181         &gpio1_device,
 182         &gpio2_device,
 183         &rtc_device,
 184         &sci0_device,
 185         &ssp0_device,
 186         &aaci_device,
 187         &mmc0_device,
 188         &kmi0_device,
 189         &kmi1_device,
 190 };
 191
 192 /*
 193  * RealView PB-A8 platform devices
 194  */
 195 static struct resource realview_pba8_flash_resource[] = {
 196         [0] = {
 197                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 198                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 199                 .flags          = IORESOURCE_MEM,
 200         },
 201         [1] = {
 202                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 203                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 204                 .flags          = IORESOURCE_MEM,
 205         },
 206 };
 207
 208 static struct resource realview_pba8_smsc911x_resources[] = {
 209         [0] = {
 210                 .start          = REALVIEW_PBA8_ETH_BASE,
 211                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 212                 .flags          = IORESOURCE_MEM,
 213         },
 214         [1] = {
 215                 .start          = IRQ_PBA8_ETH,
 216                 .end            = IRQ_PBA8_ETH,
 217                 .flags          = IORESOURCE_IRQ,
 218         },
 219 };
 220
 221 static struct resource realview_pba8_isp1761_resources[] = {
 222         [0] = {
 223                 .start          = REALVIEW_PBA8_USB_BASE,
 224                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 225                 .flags          = IORESOURCE_MEM,
 226         },
 227         [1] = {
 228                 .start          = IRQ_PBA8_USB,
 229                 .end            = IRQ_PBA8_USB,
 230                 .flags          = IORESOURCE_IRQ,
 231         },
 232 };
 233
 234 static struct resource pmu_resource = {
 235         .start          = IRQ_PBA8_PMU,
 236         .end            = IRQ_PBA8_PMU,
 237         .flags          = IORESOURCE_IRQ,
 238 };
 239
 240 static struct platform_device pmu_device = {
 241         .name                   = "arm-pmu",
 242         .id                     = -1,
 243         .num_resources          = 1,
 244         .resource               = &pmu_resource,
 245 };
 246
 247 static void __init gic_init_irq(void)
 248 {
 249         /* ARM PB-A8 on-board GIC */
 250         gic_init(0, IRQ_PBA8_GIC_START,
 251                  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
 252                  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 253 }
 254
 255 static void __init realview_pba8_timer_init(void)
 256 {
 257         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 258         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 259         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 260         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 261
 262         realview_timer_init(IRQ_PBA8_TIMER0_1);
 263 }
 264
 265 static struct sys_timer realview_pba8_timer = {
 266         .init           = realview_pba8_timer_init,
 267 };
 268
 269 static void realview_pba8_restart(char mode, const char *cmd)
 270 {
 271         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 272         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 273
 274         /*
 275          * To reset, we hit the on-board reset register
 276          * in the system FPGA
 277          */
 278         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 279         __raw_writel(0x0000, reset_ctrl);
 280         __raw_writel(0x0004, reset_ctrl);
 281         dsb();
 282 }
 283
 284 static void __init realview_pba8_init(void)
 285 {
 286         int i;
 287
 288         realview_flash_register(realview_pba8_flash_resource,
 289                                 ARRAY_SIZE(realview_pba8_flash_resource));
 290         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 291         platform_device_register(&realview_i2c_device);
 292         platform_device_register(&realview_cf_device);
 293         realview_usb_register(realview_pba8_isp1761_resources);
 294         platform_device_register(&pmu_device);
 295
 296         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 297                 struct amba_device *d = amba_devs[i];
 298                 amba_device_register(d, &iomem_resource);
 299         }
 300 }
 301
 302 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 303         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 304         .atag_offset    = 0x100,
 305         .fixup          = realview_fixup,
 306         .map_io         = realview_pba8_map_io,
 307         .init_early     = realview_init_early,
 308         .init_irq       = gic_init_irq,
 309         .timer          = &realview_pba8_timer,
 310         .handle_irq     = gic_handle_irq,
 311         .init_machine   = realview_pba8_init,
 312 #ifdef CONFIG_ZONE_DMA
 313         .dma_zone_size  = SZ_256M,
 314 #endif
 315         .restart        = realview_pba8_restart,
 316 MACHINE_END