arch/arm/mach-realview/realview_pbx.c

   1 /*
   2  *  arch/arm/mach-realview/realview_pbx.c
   3  *
   4  *  Copyright (C) 2009 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 version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/sysdev.h>
  24 #include <linux/amba/bus.h>
  25 #include <linux/io.h>
  26
  27 #include <asm/irq.h>
  28 #include <asm/leds.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/smp_twd.h>
  31 #include <asm/hardware/gic.h>
  32 #include <asm/hardware/cache-l2x0.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/mach/mmc.h>
  37 #include <asm/mach/time.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/board-pbx.h>
  41 #include <mach/irqs.h>
  42
  43 #include "core.h"
  44
  45 static struct map_desc realview_pbx_io_desc[] __initdata = {
  46         {
  47                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
  48                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
  49                 .length         = SZ_4K,
  50                 .type           = MT_DEVICE,
  51         }, {
  52                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
  53                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
  54                 .length         = SZ_4K,
  55                 .type           = MT_DEVICE,
  56         }, {
  57                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
  58                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
  59                 .length         = SZ_4K,
  60                 .type           = MT_DEVICE,
  61         }, {
  62                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
  63                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
  64                 .length         = SZ_4K,
  65                 .type           = MT_DEVICE,
  66         }, {
  67                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
  68                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
  69                 .length         = SZ_4K,
  70                 .type           = MT_DEVICE,
  71         }, {
  72                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
  73                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
  74                 .length         = SZ_4K,
  75                 .type           = MT_DEVICE,
  76         },
  77 #ifdef CONFIG_PCI
  78         {
  79                 .virtual        = PCIX_UNIT_BASE,
  80                 .pfn            = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
  81                 .length         = REALVIEW_PBX_PCI_BASE_SIZE,
  82                 .type           = MT_DEVICE,
  83         },
  84 #endif
  85 #ifdef CONFIG_DEBUG_LL
  86         {
  87                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
  88                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
  89                 .length         = SZ_4K,
  90                 .type           = MT_DEVICE,
  91         },
  92 #endif
  93 };
  94
  95 static struct map_desc realview_local_io_desc[] __initdata = {
  96         {
  97                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_CPU_BASE),
  98                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_BASE),
  99                 .length         = SZ_4K,
 100                 .type           = MT_DEVICE,
 101         }, {
 102                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 103                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 104                 .length         = SZ_4K,
 105                 .type           = MT_DEVICE,
 106         }, {
 107                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
 108                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
 109                 .length         = SZ_8K,
 110                 .type           = MT_DEVICE,
 111         }
 112 };
 113
 114 static void __init realview_pbx_map_io(void)
 115 {
 116         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
 117         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 118                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
 119 }
 120
 121 /*
 122  * RealView PBXCore AMBA devices
 123  */
 124
 125 #define GPIO2_IRQ               { IRQ_PBX_GPIO2, NO_IRQ }
 126 #define GPIO2_DMA               { 0, 0 }
 127 #define GPIO3_IRQ               { IRQ_PBX_GPIO3, NO_IRQ }
 128 #define GPIO3_DMA               { 0, 0 }
 129 #define AACI_IRQ                { IRQ_PBX_AACI, NO_IRQ }
 130 #define AACI_DMA                { 0x80, 0x81 }
 131 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
 132 #define MMCI0_DMA               { 0x84, 0 }
 133 #define KMI0_IRQ                { IRQ_PBX_KMI0, NO_IRQ }
 134 #define KMI0_DMA                { 0, 0 }
 135 #define KMI1_IRQ                { IRQ_PBX_KMI1, NO_IRQ }
 136 #define KMI1_DMA                { 0, 0 }
 137 #define PBX_SMC_IRQ             { NO_IRQ, NO_IRQ }
 138 #define PBX_SMC_DMA             { 0, 0 }
 139 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
 140 #define MPMC_DMA                { 0, 0 }
 141 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD, NO_IRQ }
 142 #define PBX_CLCD_DMA            { 0, 0 }
 143 #define DMAC_IRQ                { IRQ_PBX_DMAC, NO_IRQ }
 144 #define DMAC_DMA                { 0, 0 }
 145 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
 146 #define SCTL_DMA                { 0, 0 }
 147 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG, NO_IRQ }
 148 #define PBX_WATCHDOG_DMA        { 0, 0 }
 149 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0, NO_IRQ }
 150 #define PBX_GPIO0_DMA           { 0, 0 }
 151 #define GPIO1_IRQ               { IRQ_PBX_GPIO1, NO_IRQ }
 152 #define GPIO1_DMA               { 0, 0 }
 153 #define PBX_RTC_IRQ             { IRQ_PBX_RTC, NO_IRQ }
 154 #define PBX_RTC_DMA             { 0, 0 }
 155 #define SCI_IRQ                 { IRQ_PBX_SCI, NO_IRQ }
 156 #define SCI_DMA                 { 7, 6 }
 157 #define PBX_UART0_IRQ           { IRQ_PBX_UART0, NO_IRQ }
 158 #define PBX_UART0_DMA           { 15, 14 }
 159 #define PBX_UART1_IRQ           { IRQ_PBX_UART1, NO_IRQ }
 160 #define PBX_UART1_DMA           { 13, 12 }
 161 #define PBX_UART2_IRQ           { IRQ_PBX_UART2, NO_IRQ }
 162 #define PBX_UART2_DMA           { 11, 10 }
 163 #define PBX_UART3_IRQ           { IRQ_PBX_UART3, NO_IRQ }
 164 #define PBX_UART3_DMA           { 0x86, 0x87 }
 165 #define PBX_SSP_IRQ             { IRQ_PBX_SSP, NO_IRQ }
 166 #define PBX_SSP_DMA             { 9, 8 }
 167
 168 /* FPGA Primecells */
 169 AMBA_DEVICE(aaci,       "fpga:04",      AACI,           NULL);
 170 AMBA_DEVICE(mmc0,       "fpga:05",      MMCI0,          &realview_mmc0_plat_data);
 171 AMBA_DEVICE(kmi0,       "fpga:06",      KMI0,           NULL);
 172 AMBA_DEVICE(kmi1,       "fpga:07",      KMI1,           NULL);
 173 AMBA_DEVICE(uart3,      "fpga:09",      PBX_UART3,      NULL);
 174
 175 /* DevChip Primecells */
 176 AMBA_DEVICE(smc,        "dev:00",       PBX_SMC,        NULL);
 177 AMBA_DEVICE(sctl,       "dev:e0",       SCTL,           NULL);
 178 AMBA_DEVICE(wdog,       "dev:e1",       PBX_WATCHDOG,   NULL);
 179 AMBA_DEVICE(gpio0,      "dev:e4",       PBX_GPIO0,      NULL);
 180 AMBA_DEVICE(gpio1,      "dev:e5",       GPIO1,          NULL);
 181 AMBA_DEVICE(gpio2,      "dev:e6",       GPIO2,          NULL);
 182 AMBA_DEVICE(rtc,        "dev:e8",       PBX_RTC,        NULL);
 183 AMBA_DEVICE(sci0,       "dev:f0",       SCI,            NULL);
 184 AMBA_DEVICE(uart0,      "dev:f1",       PBX_UART0,      NULL);
 185 AMBA_DEVICE(uart1,      "dev:f2",       PBX_UART1,      NULL);
 186 AMBA_DEVICE(uart2,      "dev:f3",       PBX_UART2,      NULL);
 187 AMBA_DEVICE(ssp0,       "dev:f4",       PBX_SSP,        NULL);
 188
 189 /* Primecells on the NEC ISSP chip */
 190 AMBA_DEVICE(clcd,       "issp:20",      PBX_CLCD,       &clcd_plat_data);
 191 AMBA_DEVICE(dmac,       "issp:30",      DMAC,           NULL);
 192
 193 static struct amba_device *amba_devs[] __initdata = {
 194         &dmac_device,
 195         &uart0_device,
 196         &uart1_device,
 197         &uart2_device,
 198         &uart3_device,
 199         &smc_device,
 200         &clcd_device,
 201         &sctl_device,
 202         &wdog_device,
 203         &gpio0_device,
 204         &gpio1_device,
 205         &gpio2_device,
 206         &rtc_device,
 207         &sci0_device,
 208         &ssp0_device,
 209         &aaci_device,
 210         &mmc0_device,
 211         &kmi0_device,
 212         &kmi1_device,
 213 };
 214
 215 /*
 216  * RealView PB-X platform devices
 217  */
 218 static struct resource realview_pbx_flash_resources[] = {
 219         [0] = {
 220                 .start          = REALVIEW_PBX_FLASH0_BASE,
 221                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
 222                 .flags          = IORESOURCE_MEM,
 223         },
 224         [1] = {
 225                 .start          = REALVIEW_PBX_FLASH1_BASE,
 226                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
 227                 .flags          = IORESOURCE_MEM,
 228         },
 229 };
 230
 231 static struct resource realview_pbx_smsc911x_resources[] = {
 232         [0] = {
 233                 .start          = REALVIEW_PBX_ETH_BASE,
 234                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
 235                 .flags          = IORESOURCE_MEM,
 236         },
 237         [1] = {
 238                 .start          = IRQ_PBX_ETH,
 239                 .end            = IRQ_PBX_ETH,
 240                 .flags          = IORESOURCE_IRQ,
 241         },
 242 };
 243
 244 static struct resource realview_pbx_isp1761_resources[] = {
 245         [0] = {
 246                 .start          = REALVIEW_PBX_USB_BASE,
 247                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
 248                 .flags          = IORESOURCE_MEM,
 249         },
 250         [1] = {
 251                 .start          = IRQ_PBX_USB,
 252                 .end            = IRQ_PBX_USB,
 253                 .flags          = IORESOURCE_IRQ,
 254         },
 255 };
 256
 257 static void __init gic_init_irq(void)
 258 {
 259         /* ARM PBX on-board GIC */
 260         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
 261                 gic_cpu_base_addr = __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE);
 262                 gic_dist_init(0, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
 263                               29);
 264                 gic_cpu_init(0, __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
 265         } else {
 266                 gic_cpu_base_addr = __io_address(REALVIEW_PBX_GIC_CPU_BASE);
 267                 gic_dist_init(0, __io_address(REALVIEW_PBX_GIC_DIST_BASE),
 268                               IRQ_PBX_GIC_START);
 269                 gic_cpu_init(0, __io_address(REALVIEW_PBX_GIC_CPU_BASE));
 270         }
 271 }
 272
 273 static void __init realview_pbx_timer_init(void)
 274 {
 275         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
 276         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
 277         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 278         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 279
 280 #ifdef CONFIG_LOCAL_TIMERS
 281         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
 282                 twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
 283 #endif
 284         realview_timer_init(IRQ_PBX_TIMER0_1);
 285 }
 286
 287 static struct sys_timer realview_pbx_timer = {
 288         .init           = realview_pbx_timer_init,
 289 };
 290
 291 static void __init realview_pbx_init(void)
 292 {
 293         int i;
 294
 295 #ifdef CONFIG_CACHE_L2X0
 296         if (core_tile_pbxa9mp()) {
 297                 void __iomem *l2x0_base =
 298                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
 299
 300                 /* set RAM latencies to 1 cycle for eASIC */
 301                 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
 302                 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
 303
 304                 /* 16KB way size, 8-way associativity, parity disabled
 305                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
 306                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
 307         }
 308 #endif
 309
 310         realview_flash_register(realview_pbx_flash_resources,
 311                                 ARRAY_SIZE(realview_pbx_flash_resources));
 312         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
 313         platform_device_register(&realview_i2c_device);
 314         platform_device_register(&realview_cf_device);
 315         realview_usb_register(realview_pbx_isp1761_resources);
 316
 317         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 318                 struct amba_device *d = amba_devs[i];
 319                 amba_device_register(d, &iomem_resource);
 320         }
 321
 322 #ifdef CONFIG_LEDS
 323         leds_event = realview_leds_event;
 324 #endif
 325 }
 326
 327 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 328         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 329         .phys_io        = REALVIEW_PBX_UART0_BASE,
 330         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
 331         .boot_params    = PHYS_OFFSET + 0x00000100,
 332         .map_io         = realview_pbx_map_io,
 333         .init_irq       = gic_init_irq,
 334         .timer          = &realview_pbx_timer,
 335         .init_machine   = realview_pbx_init,
 336 MACHINE_END