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/sysdev.h>
  25 #include <linux/amba/bus.h>
  26 #include <linux/amba/pl061.h>
  27 #include <linux/amba/mmci.h>
  28 #include <linux/io.h>
  29
  30 #include <asm/irq.h>
  31 #include <asm/leds.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/hardware/gic.h>
  34 #include <asm/hardware/icst307.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 #include "clock.h"
  46
  47 static struct map_desc realview_pba8_io_desc[] __initdata = {
  48         {
  49                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  50                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  51                 .length         = SZ_4K,
  52                 .type           = MT_DEVICE,
  53         }, {
  54                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_GIC_CPU_BASE),
  55                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
  60                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_GIC_DIST_BASE),
  61                 .length         = SZ_4K,
  62                 .type           = MT_DEVICE,
  63         }, {
  64                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  65                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  66                 .length         = SZ_4K,
  67                 .type           = MT_DEVICE,
  68         }, {
  69                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_TIMER0_1_BASE),
  70                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
  71                 .length         = SZ_4K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
  75                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_TIMER2_3_BASE),
  76                 .length         = SZ_4K,
  77                 .type           = MT_DEVICE,
  78         },
  79 #ifdef CONFIG_PCI
  80         {
  81                 .virtual        = PCIX_UNIT_BASE,
  82                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_PCI_BASE),
  83                 .length         = REALVIEW_PBA8_PCI_BASE_SIZE,
  84                 .type           = MT_DEVICE
  85         },
  86 #endif
  87 #ifdef CONFIG_DEBUG_LL
  88         {
  89                 .virtual        = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
  90                 .pfn            = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
  91                 .length         = SZ_4K,
  92                 .type           = MT_DEVICE,
  93         },
  94 #endif
  95 };
  96
  97 static void __init realview_pba8_map_io(void)
  98 {
  99         iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
 100 }
 101
 102 static struct pl061_platform_data gpio0_plat_data = {
 103         .gpio_base      = 0,
 104         .irq_base       = -1,
 105 };
 106
 107 static struct pl061_platform_data gpio1_plat_data = {
 108         .gpio_base      = 8,
 109         .irq_base       = -1,
 110 };
 111
 112 static struct pl061_platform_data gpio2_plat_data = {
 113         .gpio_base      = 16,
 114         .irq_base       = -1,
 115 };
 116
 117 /*
 118  * RealView PBA8Core AMBA devices
 119  */
 120
 121 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2, NO_IRQ }
 122 #define GPIO2_DMA               { 0, 0 }
 123 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3, NO_IRQ }
 124 #define GPIO3_DMA               { 0, 0 }
 125 #define AACI_IRQ                { IRQ_PBA8_AACI, NO_IRQ }
 126 #define AACI_DMA                { 0x80, 0x81 }
 127 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
 128 #define MMCI0_DMA               { 0x84, 0 }
 129 #define KMI0_IRQ                { IRQ_PBA8_KMI0, NO_IRQ }
 130 #define KMI0_DMA                { 0, 0 }
 131 #define KMI1_IRQ                { IRQ_PBA8_KMI1, NO_IRQ }
 132 #define KMI1_DMA                { 0, 0 }
 133 #define PBA8_SMC_IRQ            { NO_IRQ, NO_IRQ }
 134 #define PBA8_SMC_DMA            { 0, 0 }
 135 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
 136 #define MPMC_DMA                { 0, 0 }
 137 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD, NO_IRQ }
 138 #define PBA8_CLCD_DMA           { 0, 0 }
 139 #define DMAC_IRQ                { IRQ_PBA8_DMAC, NO_IRQ }
 140 #define DMAC_DMA                { 0, 0 }
 141 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
 142 #define SCTL_DMA                { 0, 0 }
 143 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG, NO_IRQ }
 144 #define PBA8_WATCHDOG_DMA       { 0, 0 }
 145 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0, NO_IRQ }
 146 #define PBA8_GPIO0_DMA          { 0, 0 }
 147 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1, NO_IRQ }
 148 #define GPIO1_DMA               { 0, 0 }
 149 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC, NO_IRQ }
 150 #define PBA8_RTC_DMA            { 0, 0 }
 151 #define SCI_IRQ                 { IRQ_PBA8_SCI, NO_IRQ }
 152 #define SCI_DMA                 { 7, 6 }
 153 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0, NO_IRQ }
 154 #define PBA8_UART0_DMA          { 15, 14 }
 155 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1, NO_IRQ }
 156 #define PBA8_UART1_DMA          { 13, 12 }
 157 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2, NO_IRQ }
 158 #define PBA8_UART2_DMA          { 11, 10 }
 159 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3, NO_IRQ }
 160 #define PBA8_UART3_DMA          { 0x86, 0x87 }
 161 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP, NO_IRQ }
 162 #define PBA8_SSP_DMA            { 9, 8 }
 163
 164 /* FPGA Primecells */
 165 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 166 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 167 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 168 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 169 AMBA_DEVICE(uart3,      "fpga:uart3",   PBA8_UART3,     NULL);
 170
 171 /* DevChip Primecells */
 172 AMBA_DEVICE(smc,        "dev:smc",      PBA8_SMC,       NULL);
 173 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 174 AMBA_DEVICE(wdog,       "dev:wdog",     PBA8_WATCHDOG, NULL);
 175 AMBA_DEVICE(gpio0,      "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
 176 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 177 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 178 AMBA_DEVICE(rtc,        "dev:rtc",      PBA8_RTC,       NULL);
 179 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 180 AMBA_DEVICE(uart0,      "dev:uart0",    PBA8_UART0,     NULL);
 181 AMBA_DEVICE(uart1,      "dev:uart1",    PBA8_UART1,     NULL);
 182 AMBA_DEVICE(uart2,      "dev:uart2",    PBA8_UART2,     NULL);
 183 AMBA_DEVICE(ssp0,       "dev:ssp0",     PBA8_SSP,       NULL);
 184
 185 /* Primecells on the NEC ISSP chip */
 186 AMBA_DEVICE(clcd,       "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
 187 AMBA_DEVICE(dmac,       "issp:dmac",    DMAC,           NULL);
 188
 189 static struct amba_device *amba_devs[] __initdata = {
 190         &dmac_device,
 191         &uart0_device,
 192         &uart1_device,
 193         &uart2_device,
 194         &uart3_device,
 195         &smc_device,
 196         &clcd_device,
 197         &sctl_device,
 198         &wdog_device,
 199         &gpio0_device,
 200         &gpio1_device,
 201         &gpio2_device,
 202         &rtc_device,
 203         &sci0_device,
 204         &ssp0_device,
 205         &aaci_device,
 206         &mmc0_device,
 207         &kmi0_device,
 208         &kmi1_device,
 209 };
 210
 211 /*
 212  * RealView PB-A8 platform devices
 213  */
 214 static struct resource realview_pba8_flash_resource[] = {
 215         [0] = {
 216                 .start          = REALVIEW_PBA8_FLASH0_BASE,
 217                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
 218                 .flags          = IORESOURCE_MEM,
 219         },
 220         [1] = {
 221                 .start          = REALVIEW_PBA8_FLASH1_BASE,
 222                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
 223                 .flags          = IORESOURCE_MEM,
 224         },
 225 };
 226
 227 static struct resource realview_pba8_smsc911x_resources[] = {
 228         [0] = {
 229                 .start          = REALVIEW_PBA8_ETH_BASE,
 230                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
 231                 .flags          = IORESOURCE_MEM,
 232         },
 233         [1] = {
 234                 .start          = IRQ_PBA8_ETH,
 235                 .end            = IRQ_PBA8_ETH,
 236                 .flags          = IORESOURCE_IRQ,
 237         },
 238 };
 239
 240 static struct resource realview_pba8_isp1761_resources[] = {
 241         [0] = {
 242                 .start          = REALVIEW_PBA8_USB_BASE,
 243                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
 244                 .flags          = IORESOURCE_MEM,
 245         },
 246         [1] = {
 247                 .start          = IRQ_PBA8_USB,
 248                 .end            = IRQ_PBA8_USB,
 249                 .flags          = IORESOURCE_IRQ,
 250         },
 251 };
 252
 253 static void __init gic_init_irq(void)
 254 {
 255         /* ARM PB-A8 on-board GIC */
 256         gic_cpu_base_addr = __io_address(REALVIEW_PBA8_GIC_CPU_BASE);
 257         gic_dist_init(0, __io_address(REALVIEW_PBA8_GIC_DIST_BASE), IRQ_PBA8_GIC_START);
 258         gic_cpu_init(0, __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 259 }
 260
 261 static void __init realview_pba8_timer_init(void)
 262 {
 263         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
 264         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
 265         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 266         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 267
 268         realview_timer_init(IRQ_PBA8_TIMER0_1);
 269 }
 270
 271 static struct sys_timer realview_pba8_timer = {
 272         .init           = realview_pba8_timer_init,
 273 };
 274
 275 static void realview_pba8_reset(char mode)
 276 {
 277         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 278         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 279
 280         /*
 281          * To reset, we hit the on-board reset register
 282          * in the system FPGA
 283          */
 284         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 285         __raw_writel(0x0000, reset_ctrl);
 286         __raw_writel(0x0004, reset_ctrl);
 287 }
 288
 289 static void __init realview_pba8_init(void)
 290 {
 291         int i;
 292
 293         realview_flash_register(realview_pba8_flash_resource,
 294                                 ARRAY_SIZE(realview_pba8_flash_resource));
 295         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
 296         platform_device_register(&realview_i2c_device);
 297         platform_device_register(&realview_cf_device);
 298         realview_usb_register(realview_pba8_isp1761_resources);
 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         .phys_io        = REALVIEW_PBA8_UART0_BASE,
 314         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBA8_UART0_BASE) >> 18) & 0xfffc,
 315         .boot_params    = PHYS_OFFSET + 0x00000100,
 316         .fixup          = realview_fixup,
 317         .map_io         = realview_pba8_map_io,
 318         .init_irq       = gic_init_irq,
 319         .timer          = &realview_pba8_timer,
 320         .init_machine   = realview_pba8_init,
 321 MACHINE_END