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 <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 };
 106
 107 static struct pl061_platform_data gpio1_plat_data = {
 108         .gpio_base      = 8,
 109 };
 110
 111 static struct pl061_platform_data gpio2_plat_data = {
 112         .gpio_base      = 16,
 113 };
 114
 115 static struct pl022_ssp_controller ssp0_plat_data = {
 116         .bus_id = 0,
 117         .enable_dma = 0,
 118         .num_chipselect = 1,
 119 };
 120
 121 /*
 122  * RealView PBA8Core AMBA devices
 123  */
 124
 125 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2 }
 126 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3 }
 127 #define AACI_IRQ                { IRQ_PBA8_AACI }
 128 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 129 #define KMI0_IRQ                { IRQ_PBA8_KMI0 }
 130 #define KMI1_IRQ                { IRQ_PBA8_KMI1 }
 131 #define PBA8_SMC_IRQ            { }
 132 #define MPMC_IRQ                { }
 133 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD }
 134 #define DMAC_IRQ                { IRQ_PBA8_DMAC }
 135 #define SCTL_IRQ                { }
 136 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG }
 137 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0 }
 138 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1 }
 139 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC }
 140 #define SCI_IRQ                 { IRQ_PBA8_SCI }
 141 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0 }
 142 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1 }
 143 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2 }
 144 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3 }
 145 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP }
 146
 147 /* FPGA Primecells */
 148 APB_DEVICE(aaci,        "fpga:aaci",    AACI,           NULL);
 149 APB_DEVICE(mmc0,        "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 150 APB_DEVICE(kmi0,        "fpga:kmi0",    KMI0,           NULL);
 151 APB_DEVICE(kmi1,        "fpga:kmi1",    KMI1,           NULL);
 152 APB_DEVICE(uart3,       "fpga:uart3",   PBA8_UART3,     NULL);
 153
 154 /* DevChip Primecells */
 155 AHB_DEVICE(smc,         "dev:smc",      PBA8_SMC,       NULL);
 156 AHB_DEVICE(sctl,        "dev:sctl",     SCTL,           NULL);
 157 APB_DEVICE(wdog,        "dev:wdog",     PBA8_WATCHDOG, NULL);
 158 APB_DEVICE(gpio0,       "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 159 APB_DEVICE(gpio1,       "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 160 APB_DEVICE(gpio2,       "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 161 APB_DEVICE(rtc,         "dev:rtc",      PBA8_RTC,       NULL);
 162 APB_DEVICE(sci0,        "dev:sci0",     SCI,            NULL);
 163 APB_DEVICE(uart0,       "dev:uart0",    PBA8_UART0,     NULL);
 164 APB_DEVICE(uart1,       "dev:uart1",    PBA8_UART1,     NULL);
 165 APB_DEVICE(uart2,       "dev:uart2",    PBA8_UART2,     NULL);
 166 APB_DEVICE(ssp0,        "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
 167
 168 /* Primecells on the NEC ISSP chip */
 169 AHB_DEVICE(clcd,        "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 170 AHB_DEVICE(dmac,        "issp:dmac",    DMAC,           NULL);
 171
 172 static struct amba_device *amba_devs[] __initdata = {
 173         &dmac_device,
 174         &uart0_device,
 175         &uart1_device,
 176         &uart2_device,
 177         &uart3_device,
 178         &smc_device,
 179         &clcd_device,
 180         &sctl_device,
 181         &wdog_device,
 182         &gpio0_device,
 183         &gpio1_device,
 184         &gpio2_device,
 185         &rtc_device,
 186         &sci0_device,
 187         &ssp0_device,
 188         &aaci_device,
 189         &mmc0_device,
 190         &kmi0_device,
 191         &kmi1_device,
 192 };
 193
 194 /*
 195  * RealView PB-A8 platform devices
 196  */
 197 static struct resource realview_pba8_flash_resource[] = {
 198         [0] = {
 199                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 200                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 201                 .flags          = IORESOURCE_MEM,
 202         },
 203         [1] = {
 204                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 205                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 206                 .flags          = IORESOURCE_MEM,
 207         },
 208 };
 209
 210 static struct resource realview_pba8_smsc911x_resources[] = {
 211         [0] = {
 212                 .start          = REALVIEW_PBA8_ETH_BASE,
 213                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 214                 .flags          = IORESOURCE_MEM,
 215         },
 216         [1] = {
 217                 .start          = IRQ_PBA8_ETH,
 218                 .end            = IRQ_PBA8_ETH,
 219                 .flags          = IORESOURCE_IRQ,
 220         },
 221 };
 222
 223 static struct resource realview_pba8_isp1761_resources[] = {
 224         [0] = {
 225                 .start          = REALVIEW_PBA8_USB_BASE,
 226                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 227                 .flags          = IORESOURCE_MEM,
 228         },
 229         [1] = {
 230                 .start          = IRQ_PBA8_USB,
 231                 .end            = IRQ_PBA8_USB,
 232                 .flags          = IORESOURCE_IRQ,
 233         },
 234 };
 235
 236 static struct resource pmu_resource = {
 237         .start          = IRQ_PBA8_PMU,
 238         .end            = IRQ_PBA8_PMU,
 239         .flags          = IORESOURCE_IRQ,
 240 };
 241
 242 static struct platform_device pmu_device = {
 243         .name                   = "armv7-pmu",
 244         .id                     = -1,
 245         .num_resources          = 1,
 246         .resource               = &pmu_resource,
 247 };
 248
 249 static void __init gic_init_irq(void)
 250 {
 251         /* ARM PB-A8 on-board GIC */
 252         gic_init(0, IRQ_PBA8_GIC_START,
 253                  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
 254                  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 255 }
 256
 257 static void __init realview_pba8_timer_init(void)
 258 {
 259         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 260         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 261         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 262         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 263
 264         realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 265         realview_timer_init(IRQ_PBA8_TIMER0_1);
 266 }
 267
 268 static void realview_pba8_restart(enum reboot_mode mode, const char *cmd)
 269 {
 270         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 271         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 272
 273         /*
 274          * To reset, we hit the on-board reset register
 275          * in the system FPGA
 276          */
 277         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 278         __raw_writel(0x0000, reset_ctrl);
 279         __raw_writel(0x0004, reset_ctrl);
 280         dsb();
 281 }
 282
 283 static void __init realview_pba8_init(void)
 284 {
 285         int i;
 286
 287         realview_flash_register(realview_pba8_flash_resource,
 288                                 ARRAY_SIZE(realview_pba8_flash_resource));
 289         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 290         platform_device_register(&realview_i2c_device);
 291         platform_device_register(&realview_cf_device);
 292         platform_device_register(&realview_leds_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         .init_time      = realview_pba8_timer_init,
 310         .init_machine   = realview_pba8_init,
 311 #ifdef CONFIG_ZONE_DMA
 312         .dma_zone_size  = SZ_256M,
 313 #endif
 314         .restart        = realview_pba8_restart,
 315 MACHINE_END