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 #include <linux/platform_data/clk-realview.h>
  31
  32 #include <asm/irq.h>
  33 #include <asm/leds.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/pmu.h>
  36 #include <asm/pgtable.h>
  37 #include <asm/hardware/gic.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/time.h>
  42
  43 #include <mach/hardware.h>
  44 #include <mach/board-pba8.h>
  45 #include <mach/irqs.h>
  46
  47 #include "core.h"
  48
  49 static struct map_desc realview_pba8_io_desc[] __initdata = {
  50         {
  51                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  52                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  53                 .length         = SZ_4K,
  54                 .type           = MT_DEVICE,
  55         }, {
  56                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_GIC_CPU_BASE),
  57                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
  58                 .length         = SZ_4K,
  59                 .type           = MT_DEVICE,
  60         }, {
  61                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
  62                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_GIC_DIST_BASE),
  63                 .length         = SZ_4K,
  64                 .type           = MT_DEVICE,
  65         }, {
  66                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  67                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  68                 .length         = SZ_4K,
  69                 .type           = MT_DEVICE,
  70         }, {
  71                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_TIMER0_1_BASE),
  72                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
  73                 .length         = SZ_4K,
  74                 .type           = MT_DEVICE,
  75         }, {
  76                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
  77                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER2_3_BASE),
  78                 .length         = SZ_4K,
  79                 .type           = MT_DEVICE,
  80         },
  81 #ifdef CONFIG_PCI
  82         {
  83                 .virtual        = PCIX_UNIT_BASE,
  84                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_PCI_BASE),
  85                 .length         = REALVIEW_PBA8_PCI_BASE_SIZE,
  86                 .type           = MT_DEVICE
  87         },
  88 #endif
  89 #ifdef CONFIG_DEBUG_LL
  90         {
  91                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
  92                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
  93                 .length         = SZ_4K,
  94                 .type           = MT_DEVICE,
  95         },
  96 #endif
  97 };
  98
  99 static void __init realview_pba8_map_io(void)
 100 {
 101         iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
 102 }
 103
 104 static struct pl061_platform_data gpio0_plat_data = {
 105         .gpio_base      = 0,
 106 };
 107
 108 static struct pl061_platform_data gpio1_plat_data = {
 109         .gpio_base      = 8,
 110 };
 111
 112 static struct pl061_platform_data gpio2_plat_data = {
 113         .gpio_base      = 16,
 114 };
 115
 116 static struct pl022_ssp_controller ssp0_plat_data = {
 117         .bus_id = 0,
 118         .enable_dma = 0,
 119         .num_chipselect = 1,
 120 };
 121
 122 /*
 123  * RealView PBA8Core AMBA devices
 124  */
 125
 126 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2 }
 127 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3 }
 128 #define AACI_IRQ                { IRQ_PBA8_AACI }
 129 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 130 #define KMI0_IRQ                { IRQ_PBA8_KMI0 }
 131 #define KMI1_IRQ                { IRQ_PBA8_KMI1 }
 132 #define PBA8_SMC_IRQ            { }
 133 #define MPMC_IRQ                { }
 134 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD }
 135 #define DMAC_IRQ                { IRQ_PBA8_DMAC }
 136 #define SCTL_IRQ                { }
 137 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG }
 138 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0 }
 139 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1 }
 140 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC }
 141 #define SCI_IRQ                 { IRQ_PBA8_SCI }
 142 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0 }
 143 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1 }
 144 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2 }
 145 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3 }
 146 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP }
 147
 148 /* FPGA Primecells */
 149 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 150 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 151 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 152 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 153 APB_DEVICE(uart3,       "fpga:uart3",   PBA8_UART3,     NULL);
 154
 155 /* DevChip Primecells */
 156 AHB_DEVICE(smc,         "dev:smc",      PBA8_SMC,       NULL);
 157 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 158 APB_DEVICE(wdog,        "dev:wdog",     PBA8_WATCHDOG, NULL);
 159 APB_DEVICE(gpio0,       "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 160 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 161 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 162 APB_DEVICE(rtc,         "dev:rtc",      PBA8_RTC,       NULL);
 163 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 164 APB_DEVICE(uart0,       "dev:uart0",    PBA8_UART0,     NULL);
 165 APB_DEVICE(uart1,       "dev:uart1",    PBA8_UART1,     NULL);
 166 APB_DEVICE(uart2,       "dev:uart2",    PBA8_UART2,     NULL);
 167 APB_DEVICE(ssp0,        "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
 168
 169 /* Primecells on the NEC ISSP chip */
 170 AHB_DEVICE(clcd,        "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 171 AHB_DEVICE(dmac,        "issp:dmac",    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 static struct resource realview_pba8_isp1761_resources[] = {
 225         [0] = {
 226                 .start          = REALVIEW_PBA8_USB_BASE,
 227                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 228                 .flags          = IORESOURCE_MEM,
 229         },
 230         [1] = {
 231                 .start          = IRQ_PBA8_USB,
 232                 .end            = IRQ_PBA8_USB,
 233                 .flags          = IORESOURCE_IRQ,
 234         },
 235 };
 236
 237 static struct resource pmu_resource = {
 238         .start          = IRQ_PBA8_PMU,
 239         .end            = IRQ_PBA8_PMU,
 240         .flags          = IORESOURCE_IRQ,
 241 };
 242
 243 static struct platform_device pmu_device = {
 244         .name                   = "arm-pmu",
 245         .id                     = ARM_PMU_DEVICE_CPU,
 246         .num_resources          = 1,
 247         .resource               = &pmu_resource,
 248 };
 249
 250 static void __init gic_init_irq(void)
 251 {
 252         /* ARM PB-A8 on-board GIC */
 253         gic_init(0, IRQ_PBA8_GIC_START,
 254                  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
 255                  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 256 }
 257
 258 static void __init realview_pba8_timer_init(void)
 259 {
 260         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 261         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 262         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 263         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 264
 265         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 266         realview_timer_init(IRQ_PBA8_TIMER0_1);
 267 }
 268
 269 static struct sys_timer realview_pba8_timer = {
 270         .init           = realview_pba8_timer_init,
 271 };
 272
 273 static void realview_pba8_restart(char mode, const char *cmd)
 274 {
 275         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 276         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 277
 278         /*
 279          * To reset, we hit the on-board reset register
 280          * in the system FPGA
 281          */
 282         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 283         __raw_writel(0x0000, reset_ctrl);
 284         __raw_writel(0x0004, reset_ctrl);
 285         dsb();
 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 }
 309
 310 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 311         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 312         .atag_offset    = 0x100,
 313         .fixup          = realview_fixup,
 314         .map_io         = realview_pba8_map_io,
 315         .init_early     = realview_init_early,
 316         .init_irq       = gic_init_irq,
 317         .timer          = &realview_pba8_timer,
 318         .handle_irq     = gic_handle_irq,
 319         .init_machine   = realview_pba8_init,
 320 #ifdef CONFIG_ZONE_DMA
 321         .dma_zone_size  = SZ_256M,
 322 #endif
 323         .restart        = realview_pba8_restart,
 324 MACHINE_END