SAFE public projects git trees. - safe/jmp/linux-2.6/blob - arch/arm/mach-realview/realview_pb1176.c

   1 /*
   2  *  linux/arch/arm/mach-realview/realview_pb1176.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 <mach/hardware.h>
  31 #include <asm/irq.h>
  32 #include <asm/leds.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/hardware/gic.h>
  35 #include <asm/hardware/cache-l2x0.h>
  36
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/flash.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/time.h>
  41
  42 #include <mach/board-pb1176.h>
  43 #include <mach/irqs.h>
  44
  45 #include "core.h"
  46
  47 static struct map_desc realview_pb1176_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_PB1176_GIC_CPU_BASE),
  55                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
  56                 .length         = SZ_4K,
  57                 .type           = MT_DEVICE,
  58         }, {
  59                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
  60                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
  61                 .length         = SZ_4K,
  62                 .type           = MT_DEVICE,
  63         }, {
  64                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
  65                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
  66                 .length         = SZ_4K,
  67                 .type           = MT_DEVICE,
  68         }, {
  69                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
  70                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
  71                 .length         = SZ_4K,
  72                 .type           = MT_DEVICE,
  73         }, {
  74                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  75                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  76                 .length         = SZ_4K,
  77                 .type           = MT_DEVICE,
  78         }, {
  79                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
  80                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
  81                 .length         = SZ_4K,
  82                 .type           = MT_DEVICE,
  83         }, {
  84                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
  85                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
  86                 .length         = SZ_4K,
  87                 .type           = MT_DEVICE,
  88         }, {
  89                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
  90                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
  91                 .length         = SZ_8K,
  92                 .type           = MT_DEVICE,
  93         },
  94 #ifdef CONFIG_DEBUG_LL
  95         {
  96                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
  97                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
  98                 .length         = SZ_4K,
  99                 .type           = MT_DEVICE,
 100         },
 101 #endif
 102 };
 103
 104 static void __init realview_pb1176_map_io(void)
 105 {
 106         iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
 107 }
 108
 109 static struct pl061_platform_data gpio0_plat_data = {
 110         .gpio_base      = 0,
 111         .irq_base       = -1,
 112 };
 113
 114 static struct pl061_platform_data gpio1_plat_data = {
 115         .gpio_base      = 8,
 116         .irq_base       = -1,
 117 };
 118
 119 static struct pl061_platform_data gpio2_plat_data = {
 120         .gpio_base      = 16,
 121         .irq_base       = -1,
 122 };
 123
 124 /*
 125  * RealView PB1176 AMBA devices
 126  */
 127 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2, NO_IRQ }
 128 #define GPIO2_DMA       { 0, 0 }
 129 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3, NO_IRQ }
 130 #define GPIO3_DMA       { 0, 0 }
 131 #define AACI_IRQ        { IRQ_PB1176_AACI, NO_IRQ }
 132 #define AACI_DMA        { 0x80, 0x81 }
 133 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
 134 #define MMCI0_DMA       { 0x84, 0 }
 135 #define KMI0_IRQ        { IRQ_PB1176_KMI0, NO_IRQ }
 136 #define KMI0_DMA        { 0, 0 }
 137 #define KMI1_IRQ        { IRQ_PB1176_KMI1, NO_IRQ }
 138 #define KMI1_DMA        { 0, 0 }
 139 #define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
 140 #define PB1176_SMC_DMA  { 0, 0 }
 141 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
 142 #define MPMC_DMA        { 0, 0 }
 143 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
 144 #define PB1176_CLCD_DMA { 0, 0 }
 145 #define DMAC_IRQ        { IRQ_PB1176_DMAC, NO_IRQ }
 146 #define DMAC_DMA        { 0, 0 }
 147 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 148 #define SCTL_DMA        { 0, 0 }
 149 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
 150 #define PB1176_WATCHDOG_DMA     { 0, 0 }
 151 #define PB1176_GPIO0_IRQ        { IRQ_PB1176_GPIO0, NO_IRQ }
 152 #define PB1176_GPIO0_DMA        { 0, 0 }
 153 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1, NO_IRQ }
 154 #define GPIO1_DMA       { 0, 0 }
 155 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
 156 #define PB1176_RTC_DMA  { 0, 0 }
 157 #define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
 158 #define SCI_DMA         { 7, 6 }
 159 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0, NO_IRQ }
 160 #define PB1176_UART0_DMA        { 15, 14 }
 161 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1, NO_IRQ }
 162 #define PB1176_UART1_DMA        { 13, 12 }
 163 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2, NO_IRQ }
 164 #define PB1176_UART2_DMA        { 11, 10 }
 165 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
 166 #define PB1176_UART3_DMA        { 0x86, 0x87 }
 167 #define PB1176_SSP_IRQ          { IRQ_PB1176_SSP, NO_IRQ }
 168 #define PB1176_SSP_DMA          { 9, 8 }
 169
 170 /* FPGA Primecells */
 171 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
 172 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 173 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 174 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
 175 AMBA_DEVICE(uart3,      "fpga:uart3",   PB1176_UART3,   NULL);
 176
 177 /* DevChip Primecells */
 178 AMBA_DEVICE(smc,        "dev:smc",      PB1176_SMC,     NULL);
 179 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
 180 AMBA_DEVICE(wdog,       "dev:wdog",     PB1176_WATCHDOG,        NULL);
 181 AMBA_DEVICE(gpio0,      "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
 182 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
 183 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
 184 AMBA_DEVICE(rtc,        "dev:rtc",      PB1176_RTC,     NULL);
 185 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
 186 AMBA_DEVICE(uart0,      "dev:uart0",    PB1176_UART0,   NULL);
 187 AMBA_DEVICE(uart1,      "dev:uart1",    PB1176_UART1,   NULL);
 188 AMBA_DEVICE(uart2,      "dev:uart2",    PB1176_UART2,   NULL);
 189 AMBA_DEVICE(ssp0,       "dev:ssp0",     PB1176_SSP,     NULL);
 190
 191 /* Primecells on the NEC ISSP chip */
 192 AMBA_DEVICE(clcd,       "issp:clcd",    PB1176_CLCD,    &clcd_plat_data);
 193 //AMBA_DEVICE(dmac,     "issp:dmac",    PB1176_DMAC,    NULL);
 194
 195 static struct amba_device *amba_devs[] __initdata = {
 196 //      &dmac_device,
 197         &uart0_device,
 198         &uart1_device,
 199         &uart2_device,
 200         &uart3_device,
 201         &smc_device,
 202         &clcd_device,
 203         &sctl_device,
 204         &wdog_device,
 205         &gpio0_device,
 206         &gpio1_device,
 207         &gpio2_device,
 208         &rtc_device,
 209         &sci0_device,
 210         &ssp0_device,
 211         &aaci_device,
 212         &mmc0_device,
 213         &kmi0_device,
 214         &kmi1_device,
 215 };
 216
 217 /*
 218  * RealView PB1176 platform devices
 219  */
 220 static struct resource realview_pb1176_flash_resources[] = {
 221         [0] = {
 222                 .start          = REALVIEW_PB1176_FLASH_BASE,
 223                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
 224                 .flags          = IORESOURCE_MEM,
 225         },
 226         [1] = {
 227                 .start          = REALVIEW_PB1176_SEC_FLASH_BASE,
 228                 .end            = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
 229                 .flags          = IORESOURCE_MEM,
 230         },
 231 };
 232 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
 233 #define PB1176_FLASH_BLOCKS     2
 234 #else
 235 #define PB1176_FLASH_BLOCKS     1
 236 #endif
 237
 238 static struct resource realview_pb1176_smsc911x_resources[] = {
 239         [0] = {
 240                 .start          = REALVIEW_PB1176_ETH_BASE,
 241                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
 242                 .flags          = IORESOURCE_MEM,
 243         },
 244         [1] = {
 245                 .start          = IRQ_PB1176_ETH,
 246                 .end            = IRQ_PB1176_ETH,
 247                 .flags          = IORESOURCE_IRQ,
 248         },
 249 };
 250
 251 static struct resource realview_pb1176_isp1761_resources[] = {
 252         [0] = {
 253                 .start          = REALVIEW_PB1176_USB_BASE,
 254                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
 255                 .flags          = IORESOURCE_MEM,
 256         },
 257         [1] = {
 258                 .start          = IRQ_PB1176_USB,
 259                 .end            = IRQ_PB1176_USB,
 260                 .flags          = IORESOURCE_IRQ,
 261         },
 262 };
 263
 264 static void __init gic_init_irq(void)
 265 {
 266         /* ARM1176 DevChip GIC, primary */
 267         gic_cpu_base_addr = __io_address(REALVIEW_DC1176_GIC_CPU_BASE);
 268         gic_dist_init(0, __io_address(REALVIEW_DC1176_GIC_DIST_BASE), IRQ_DC1176_GIC_START);
 269         gic_cpu_init(0, gic_cpu_base_addr);
 270
 271         /* board GIC, secondary */
 272         gic_dist_init(1, __io_address(REALVIEW_PB1176_GIC_DIST_BASE), IRQ_PB1176_GIC_START);
 273         gic_cpu_init(1, __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 274         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 275 }
 276
 277 static void __init realview_pb1176_timer_init(void)
 278 {
 279         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
 280         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
 281         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 282         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 283
 284         realview_timer_init(IRQ_DC1176_TIMER0);
 285 }
 286
 287 static struct sys_timer realview_pb1176_timer = {
 288         .init           = realview_pb1176_timer_init,
 289 };
 290
 291 static void realview_pb1176_reset(char mode)
 292 {
 293         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
 294         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
 295         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
 296         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
 297 }
 298
 299 static void realview_pb1176_fixup(struct machine_desc *mdesc,
 300                                   struct tag *tags, char **from,
 301                                   struct meminfo *meminfo)
 302 {
 303         /*
 304          * RealView PB1176 only has 128MB of RAM mapped at 0.
 305          */
 306         meminfo->bank[0].start = 0;
 307         meminfo->bank[0].size = SZ_128M;
 308         meminfo->nr_banks = 1;
 309 }
 310
 311 static void __init realview_pb1176_init(void)
 312 {
 313         int i;
 314
 315 #ifdef CONFIG_CACHE_L2X0
 316         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
 317         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
 318 #endif
 319
 320         realview_flash_register(realview_pb1176_flash_resources,
 321                                 PB1176_FLASH_BLOCKS);
 322         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
 323         platform_device_register(&realview_i2c_device);
 324         realview_usb_register(realview_pb1176_isp1761_resources);
 325
 326         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 327                 struct amba_device *d = amba_devs[i];
 328                 amba_device_register(d, &iomem_resource);
 329         }
 330
 331 #ifdef CONFIG_LEDS
 332         leds_event = realview_leds_event;
 333 #endif
 334         realview_reset = realview_pb1176_reset;
 335 }
 336
 337 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 338         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 339         .phys_io        = REALVIEW_PB1176_UART0_BASE,
 340         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PB1176_UART0_BASE) >> 18) & 0xfffc,
 341         .boot_params    = PHYS_OFFSET + 0x00000100,
 342         .fixup          = realview_pb1176_fixup,
 343         .map_io         = realview_pb1176_map_io,
 344         .init_irq       = gic_init_irq,
 345         .timer          = &realview_pb1176_timer,
 346         .init_machine   = realview_pb1176_init,
 347 MACHINE_END