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/irqchip/arm-gic.h>
  31 #include <linux/platform_data/clk-realview.h>
  32 #include <linux/reboot.h>
  33
  34 #include <asm/irq.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/pgtable.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/time.h>
  41
  42 #include "hardware.h"
  43 #include "board-pba8.h"
  44 #include "irqs-pba8.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_DEBUG_LL
  81         {
  82                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
  83                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
  84                 .length         = SZ_4K,
  85                 .type           = MT_DEVICE,
  86         },
  87 #endif
  88 };
  89
  90 static void __init realview_pba8_map_io(void)
  91 {
  92         iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
  93 }
  94
  95 static struct pl061_platform_data gpio0_plat_data = {
  96         .gpio_base      = 0,
  97 };
  98
  99 static struct pl061_platform_data gpio1_plat_data = {
 100         .gpio_base      = 8,
 101 };
 102
 103 static struct pl061_platform_data gpio2_plat_data = {
 104         .gpio_base      = 16,
 105 };
 106
 107 static struct pl022_ssp_controller ssp0_plat_data = {
 108         .bus_id = 0,
 109         .enable_dma = 0,
 110         .num_chipselect = 1,
 111 };
 112
 113 /*
 114  * RealView PBA8Core AMBA devices
 115  */
 116
 117 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2 }
 118 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3 }
 119 #define AACI_IRQ                { IRQ_PBA8_AACI }
 120 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 121 #define KMI0_IRQ                { IRQ_PBA8_KMI0 }
 122 #define KMI1_IRQ                { IRQ_PBA8_KMI1 }
 123 #define PBA8_SMC_IRQ            { }
 124 #define MPMC_IRQ                { }
 125 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD }
 126 #define DMAC_IRQ                { IRQ_PBA8_DMAC }
 127 #define SCTL_IRQ                { }
 128 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG }
 129 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0 }
 130 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1 }
 131 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC }
 132 #define SCI_IRQ                 { IRQ_PBA8_SCI }
 133 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0 }
 134 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1 }
 135 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2 }
 136 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3 }
 137 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP }
 138
 139 /* FPGA Primecells */
 140 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 141 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 142 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 143 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 144 APB_DEVICE(uart3,       "fpga:uart3",   PBA8_UART3,     NULL);
 145
 146 /* DevChip Primecells */
 147 AHB_DEVICE(smc,         "dev:smc",      PBA8_SMC,       NULL);
 148 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 149 APB_DEVICE(wdog,        "dev:wdog",     PBA8_WATCHDOG, NULL);
 150 APB_DEVICE(gpio0,       "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 151 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 152 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 153 APB_DEVICE(rtc,         "dev:rtc",      PBA8_RTC,       NULL);
 154 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 155 APB_DEVICE(uart0,       "dev:uart0",    PBA8_UART0,     NULL);
 156 APB_DEVICE(uart1,       "dev:uart1",    PBA8_UART1,     NULL);
 157 APB_DEVICE(uart2,       "dev:uart2",    PBA8_UART2,     NULL);
 158 APB_DEVICE(ssp0,        "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
 159
 160 /* Primecells on the NEC ISSP chip */
 161 AHB_DEVICE(clcd,        "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 162 AHB_DEVICE(dmac,        "issp:dmac",    DMAC,           NULL);
 163
 164 static struct amba_device *amba_devs[] __initdata = {
 165         &dmac_device,
 166         &uart0_device,
 167         &uart1_device,
 168         &uart2_device,
 169         &uart3_device,
 170         &smc_device,
 171         &clcd_device,
 172         &sctl_device,
 173         &wdog_device,
 174         &gpio0_device,
 175         &gpio1_device,
 176         &gpio2_device,
 177         &rtc_device,
 178         &sci0_device,
 179         &ssp0_device,
 180         &aaci_device,
 181         &mmc0_device,
 182         &kmi0_device,
 183         &kmi1_device,
 184 };
 185
 186 /*
 187  * RealView PB-A8 platform devices
 188  */
 189 static struct resource realview_pba8_flash_resource[] = {
 190         [0] = {
 191                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 192                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 193                 .flags          = IORESOURCE_MEM,
 194         },
 195         [1] = {
 196                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 197                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 198                 .flags          = IORESOURCE_MEM,
 199         },
 200 };
 201
 202 static struct resource realview_pba8_smsc911x_resources[] = {
 203         [0] = {
 204                 .start          = REALVIEW_PBA8_ETH_BASE,
 205                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 206                 .flags          = IORESOURCE_MEM,
 207         },
 208         [1] = {
 209                 .start          = IRQ_PBA8_ETH,
 210                 .end            = IRQ_PBA8_ETH,
 211                 .flags          = IORESOURCE_IRQ,
 212         },
 213 };
 214
 215 static struct resource realview_pba8_isp1761_resources[] = {
 216         [0] = {
 217                 .start          = REALVIEW_PBA8_USB_BASE,
 218                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 219                 .flags          = IORESOURCE_MEM,
 220         },
 221         [1] = {
 222                 .start          = IRQ_PBA8_USB,
 223                 .end            = IRQ_PBA8_USB,
 224                 .flags          = IORESOURCE_IRQ,
 225         },
 226 };
 227
 228 static struct resource pmu_resource = {
 229         .start          = IRQ_PBA8_PMU,
 230         .end            = IRQ_PBA8_PMU,
 231         .flags          = IORESOURCE_IRQ,
 232 };
 233
 234 static struct platform_device pmu_device = {
 235         .name                   = "armv7-pmu",
 236         .id                     = -1,
 237         .num_resources          = 1,
 238         .resource               = &pmu_resource,
 239 };
 240
 241 static void __init gic_init_irq(void)
 242 {
 243         /* ARM PB-A8 on-board GIC */
 244         gic_init(0, IRQ_PBA8_GIC_START,
 245                  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
 246                  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 247 }
 248
 249 static void __init realview_pba8_timer_init(void)
 250 {
 251         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 252         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 253         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 254         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 255
 256         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 257         realview_timer_init(IRQ_PBA8_TIMER0_1);
 258 }
 259
 260 static void realview_pba8_restart(enum reboot_mode mode, const char *cmd)
 261 {
 262         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 263         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 264
 265         /*
 266          * To reset, we hit the on-board reset register
 267          * in the system FPGA
 268          */
 269         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 270         __raw_writel(0x0000, reset_ctrl);
 271         __raw_writel(0x0004, reset_ctrl);
 272         dsb();
 273 }
 274
 275 static void __init realview_pba8_init(void)
 276 {
 277         int i;
 278
 279         realview_flash_register(realview_pba8_flash_resource,
 280                                 ARRAY_SIZE(realview_pba8_flash_resource));
 281         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 282         platform_device_register(&realview_i2c_device);
 283         platform_device_register(&realview_cf_device);
 284         platform_device_register(&realview_leds_device);
 285         realview_usb_register(realview_pba8_isp1761_resources);
 286         platform_device_register(&pmu_device);
 287
 288         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 289                 struct amba_device *d = amba_devs[i];
 290                 amba_device_register(d, &iomem_resource);
 291         }
 292 }
 293
 294 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 295         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 296         .atag_offset    = 0x100,
 297         .fixup          = realview_fixup,
 298         .map_io         = realview_pba8_map_io,
 299         .init_early     = realview_init_early,
 300         .init_irq       = gic_init_irq,
 301         .init_time      = realview_pba8_timer_init,
 302         .init_machine   = realview_pba8_init,
 303 #ifdef CONFIG_ZONE_DMA
 304         .dma_zone_size  = SZ_256M,
 305 #endif
 306         .restart        = realview_pba8_restart,
 307 MACHINE_END