arch/arm/mach-vexpress/v2m.c

   1 /*
   2  * Versatile Express V2M Motherboard Support
   3  */
   4 #include <linux/clocksource.h>
   5 #include <linux/device.h>
   6 #include <linux/amba/bus.h>
   7 #include <linux/amba/mmci.h>
   8 #include <linux/io.h>
   9 #include <linux/clocksource.h>
  10 #include <linux/smp.h>
  11 #include <linux/init.h>
  12 #include <linux/irqchip.h>
  13 #include <linux/of_address.h>
  14 #include <linux/of_fdt.h>
  15 #include <linux/of_irq.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/ata_platform.h>
  19 #include <linux/smsc911x.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/usb/isp1760.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/regulator/fixed.h>
  24 #include <linux/regulator/machine.h>
  25 #include <linux/vexpress.h>
  26 #include <linux/clk-provider.h>
  27 #include <linux/clkdev.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <asm/sizes.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/time.h>
  34 #include <asm/hardware/arm_timer.h>
  35 #include <asm/hardware/cache-l2x0.h>
  36 #include <asm/hardware/timer-sp.h>
  37
  38 #include <mach/ct-ca9x4.h>
  39 #include <mach/motherboard.h>
  40
  41 #include <plat/sched_clock.h>
  42 #include <plat/platsmp.h>
  43
  44 #include "core.h"
  45
  46 #define V2M_PA_CS0      0x40000000
  47 #define V2M_PA_CS1      0x44000000
  48 #define V2M_PA_CS2      0x48000000
  49 #define V2M_PA_CS3      0x4c000000
  50 #define V2M_PA_CS7      0x10000000
  51
  52 static struct map_desc v2m_io_desc[] __initdata = {
  53         {
  54                 .virtual        = V2M_PERIPH,
  55                 .pfn            = __phys_to_pfn(V2M_PA_CS7),
  56                 .length         = SZ_128K,
  57                 .type           = MT_DEVICE,
  58         },
  59 };
  60
  61 static void __init v2m_sp804_init(void __iomem *base, unsigned int irq)
  62 {
  63         if (WARN_ON(!base || irq == NO_IRQ))
  64                 return;
  65
  66         sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1");
  67         sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0");
  68 }
  69
  70
  71 static struct resource v2m_pcie_i2c_resource = {
  72         .start  = V2M_SERIAL_BUS_PCI,
  73         .end    = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
  74         .flags  = IORESOURCE_MEM,
  75 };
  76
  77 static struct platform_device v2m_pcie_i2c_device = {
  78         .name           = "versatile-i2c",
  79         .id             = 0,
  80         .num_resources  = 1,
  81         .resource       = &v2m_pcie_i2c_resource,
  82 };
  83
  84 static struct resource v2m_ddc_i2c_resource = {
  85         .start  = V2M_SERIAL_BUS_DVI,
  86         .end    = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
  87         .flags  = IORESOURCE_MEM,
  88 };
  89
  90 static struct platform_device v2m_ddc_i2c_device = {
  91         .name           = "versatile-i2c",
  92         .id             = 1,
  93         .num_resources  = 1,
  94         .resource       = &v2m_ddc_i2c_resource,
  95 };
  96
  97 static struct resource v2m_eth_resources[] = {
  98         {
  99                 .start  = V2M_LAN9118,
 100                 .end    = V2M_LAN9118 + SZ_64K - 1,
 101                 .flags  = IORESOURCE_MEM,
 102         }, {
 103                 .start  = IRQ_V2M_LAN9118,
 104                 .end    = IRQ_V2M_LAN9118,
 105                 .flags  = IORESOURCE_IRQ,
 106         },
 107 };
 108
 109 static struct smsc911x_platform_config v2m_eth_config = {
 110         .flags          = SMSC911X_USE_32BIT,
 111         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 112         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 113         .phy_interface  = PHY_INTERFACE_MODE_MII,
 114 };
 115
 116 static struct platform_device v2m_eth_device = {
 117         .name           = "smsc911x",
 118         .id             = -1,
 119         .resource       = v2m_eth_resources,
 120         .num_resources  = ARRAY_SIZE(v2m_eth_resources),
 121         .dev.platform_data = &v2m_eth_config,
 122 };
 123
 124 static struct regulator_consumer_supply v2m_eth_supplies[] = {
 125         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 126         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 127 };
 128
 129 static struct resource v2m_usb_resources[] = {
 130         {
 131                 .start  = V2M_ISP1761,
 132                 .end    = V2M_ISP1761 + SZ_128K - 1,
 133                 .flags  = IORESOURCE_MEM,
 134         }, {
 135                 .start  = IRQ_V2M_ISP1761,
 136                 .end    = IRQ_V2M_ISP1761,
 137                 .flags  = IORESOURCE_IRQ,
 138         },
 139 };
 140
 141 static struct isp1760_platform_data v2m_usb_config = {
 142         .is_isp1761             = true,
 143         .bus_width_16           = false,
 144         .port1_otg              = true,
 145         .analog_oc              = false,
 146         .dack_polarity_high     = false,
 147         .dreq_polarity_high     = false,
 148 };
 149
 150 static struct platform_device v2m_usb_device = {
 151         .name           = "isp1760",
 152         .id             = -1,
 153         .resource       = v2m_usb_resources,
 154         .num_resources  = ARRAY_SIZE(v2m_usb_resources),
 155         .dev.platform_data = &v2m_usb_config,
 156 };
 157
 158 static struct physmap_flash_data v2m_flash_data = {
 159         .width          = 4,
 160 };
 161
 162 static struct resource v2m_flash_resources[] = {
 163         {
 164                 .start  = V2M_NOR0,
 165                 .end    = V2M_NOR0 + SZ_64M - 1,
 166                 .flags  = IORESOURCE_MEM,
 167         }, {
 168                 .start  = V2M_NOR1,
 169                 .end    = V2M_NOR1 + SZ_64M - 1,
 170                 .flags  = IORESOURCE_MEM,
 171         },
 172 };
 173
 174 static struct platform_device v2m_flash_device = {
 175         .name           = "physmap-flash",
 176         .id             = -1,
 177         .resource       = v2m_flash_resources,
 178         .num_resources  = ARRAY_SIZE(v2m_flash_resources),
 179         .dev.platform_data = &v2m_flash_data,
 180 };
 181
 182 static struct pata_platform_info v2m_pata_data = {
 183         .ioport_shift   = 2,
 184 };
 185
 186 static struct resource v2m_pata_resources[] = {
 187         {
 188                 .start  = V2M_CF,
 189                 .end    = V2M_CF + 0xff,
 190                 .flags  = IORESOURCE_MEM,
 191         }, {
 192                 .start  = V2M_CF + 0x100,
 193                 .end    = V2M_CF + SZ_4K - 1,
 194                 .flags  = IORESOURCE_MEM,
 195         },
 196 };
 197
 198 static struct platform_device v2m_cf_device = {
 199         .name           = "pata_platform",
 200         .id             = -1,
 201         .resource       = v2m_pata_resources,
 202         .num_resources  = ARRAY_SIZE(v2m_pata_resources),
 203         .dev.platform_data = &v2m_pata_data,
 204 };
 205
 206 static struct mmci_platform_data v2m_mmci_data = {
 207         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 208         .gpio_wp        = VEXPRESS_GPIO_MMC_WPROT,
 209         .gpio_cd        = VEXPRESS_GPIO_MMC_CARDIN,
 210 };
 211
 212 static struct resource v2m_sysreg_resources[] = {
 213         {
 214                 .start  = V2M_SYSREGS,
 215                 .end    = V2M_SYSREGS + 0xfff,
 216                 .flags  = IORESOURCE_MEM,
 217         },
 218 };
 219
 220 static struct platform_device v2m_sysreg_device = {
 221         .name           = "vexpress-sysreg",
 222         .id             = -1,
 223         .resource       = v2m_sysreg_resources,
 224         .num_resources  = ARRAY_SIZE(v2m_sysreg_resources),
 225 };
 226
 227 static struct platform_device v2m_muxfpga_device = {
 228         .name           = "vexpress-muxfpga",
 229         .id             = 0,
 230         .num_resources  = 1,
 231         .resource       = (struct resource []) {
 232                 VEXPRESS_RES_FUNC(0, 7),
 233         }
 234 };
 235
 236 static struct platform_device v2m_shutdown_device = {
 237         .name           = "vexpress-shutdown",
 238         .id             = 0,
 239         .num_resources  = 1,
 240         .resource       = (struct resource []) {
 241                 VEXPRESS_RES_FUNC(0, 8),
 242         }
 243 };
 244
 245 static struct platform_device v2m_reboot_device = {
 246         .name           = "vexpress-reboot",
 247         .id             = 0,
 248         .num_resources  = 1,
 249         .resource       = (struct resource []) {
 250                 VEXPRESS_RES_FUNC(0, 9),
 251         }
 252 };
 253
 254 static struct platform_device v2m_dvimode_device = {
 255         .name           = "vexpress-dvimode",
 256         .id             = 0,
 257         .num_resources  = 1,
 258         .resource       = (struct resource []) {
 259                 VEXPRESS_RES_FUNC(0, 11),
 260         }
 261 };
 262
 263 static AMBA_APB_DEVICE(aaci,  "mb:aaci",  0, V2M_AACI, IRQ_V2M_AACI, NULL);
 264 static AMBA_APB_DEVICE(mmci,  "mb:mmci",  0, V2M_MMCI, IRQ_V2M_MMCI, &v2m_mmci_data);
 265 static AMBA_APB_DEVICE(kmi0,  "mb:kmi0",  0, V2M_KMI0, IRQ_V2M_KMI0, NULL);
 266 static AMBA_APB_DEVICE(kmi1,  "mb:kmi1",  0, V2M_KMI1, IRQ_V2M_KMI1, NULL);
 267 static AMBA_APB_DEVICE(uart0, "mb:uart0", 0, V2M_UART0, IRQ_V2M_UART0, NULL);
 268 static AMBA_APB_DEVICE(uart1, "mb:uart1", 0, V2M_UART1, IRQ_V2M_UART1, NULL);
 269 static AMBA_APB_DEVICE(uart2, "mb:uart2", 0, V2M_UART2, IRQ_V2M_UART2, NULL);
 270 static AMBA_APB_DEVICE(uart3, "mb:uart3", 0, V2M_UART3, IRQ_V2M_UART3, NULL);
 271 static AMBA_APB_DEVICE(wdt,   "mb:wdt",   0, V2M_WDT, IRQ_V2M_WDT, NULL);
 272 static AMBA_APB_DEVICE(rtc,   "mb:rtc",   0, V2M_RTC, IRQ_V2M_RTC, NULL);
 273
 274 static struct amba_device *v2m_amba_devs[] __initdata = {
 275         &aaci_device,
 276         &mmci_device,
 277         &kmi0_device,
 278         &kmi1_device,
 279         &uart0_device,
 280         &uart1_device,
 281         &uart2_device,
 282         &uart3_device,
 283         &wdt_device,
 284         &rtc_device,
 285 };
 286
 287 static void __init v2m_timer_init(void)
 288 {
 289         vexpress_clk_init(ioremap(V2M_SYSCTL, SZ_4K));
 290         v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0);
 291 }
 292
 293 static void __init v2m_init_early(void)
 294 {
 295         if (ct_desc->init_early)
 296                 ct_desc->init_early();
 297         versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), 24000000);
 298 }
 299
 300 struct ct_desc *ct_desc;
 301
 302 static struct ct_desc *ct_descs[] __initdata = {
 303 #ifdef CONFIG_ARCH_VEXPRESS_CA9X4
 304         &ct_ca9x4_desc,
 305 #endif
 306 };
 307
 308 static void __init v2m_populate_ct_desc(void)
 309 {
 310         int i;
 311         u32 current_tile_id;
 312
 313         ct_desc = NULL;
 314         current_tile_id = vexpress_get_procid(VEXPRESS_SITE_MASTER)
 315                                 & V2M_CT_ID_MASK;
 316
 317         for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
 318                 if (ct_descs[i]->id == current_tile_id)
 319                         ct_desc = ct_descs[i];
 320
 321         if (!ct_desc)
 322                 panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n"
 323                       "You may need a device tree blob or a different kernel to boot on this board.\n",
 324                       current_tile_id);
 325 }
 326
 327 static void __init v2m_map_io(void)
 328 {
 329         iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
 330         vexpress_sysreg_early_init(ioremap(V2M_SYSREGS, SZ_4K));
 331         v2m_populate_ct_desc();
 332         ct_desc->map_io();
 333 }
 334
 335 static void __init v2m_init_irq(void)
 336 {
 337         ct_desc->init_irq();
 338 }
 339
 340 static void __init v2m_init(void)
 341 {
 342         int i;
 343
 344         regulator_register_fixed(0, v2m_eth_supplies,
 345                         ARRAY_SIZE(v2m_eth_supplies));
 346
 347         platform_device_register(&v2m_muxfpga_device);
 348         platform_device_register(&v2m_shutdown_device);
 349         platform_device_register(&v2m_reboot_device);
 350         platform_device_register(&v2m_dvimode_device);
 351
 352         platform_device_register(&v2m_sysreg_device);
 353         platform_device_register(&v2m_pcie_i2c_device);
 354         platform_device_register(&v2m_ddc_i2c_device);
 355         platform_device_register(&v2m_flash_device);
 356         platform_device_register(&v2m_cf_device);
 357         platform_device_register(&v2m_eth_device);
 358         platform_device_register(&v2m_usb_device);
 359
 360         for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
 361                 amba_device_register(v2m_amba_devs[i], &iomem_resource);
 362
 363         ct_desc->init_tile();
 364 }
 365
 366 MACHINE_START(VEXPRESS, "ARM-Versatile Express")
 367         .atag_offset    = 0x100,
 368         .smp            = smp_ops(vexpress_smp_ops),
 369         .map_io         = v2m_map_io,
 370         .init_early     = v2m_init_early,
 371         .init_irq       = v2m_init_irq,
 372         .init_time      = v2m_timer_init,
 373         .init_machine   = v2m_init,
 374 MACHINE_END
 375
 376 static struct map_desc v2m_rs1_io_desc __initdata = {
 377         .virtual        = V2M_PERIPH,
 378         .pfn            = __phys_to_pfn(0x1c000000),
 379         .length         = SZ_2M,
 380         .type           = MT_DEVICE,
 381 };
 382
 383 static int __init v2m_dt_scan_memory_map(unsigned long node, const char *uname,
 384                 int depth, void *data)
 385 {
 386         const char **map = data;
 387
 388         if (strcmp(uname, "motherboard") != 0)
 389                 return 0;
 390
 391         *map = of_get_flat_dt_prop(node, "arm,v2m-memory-map", NULL);
 392
 393         return 1;
 394 }
 395
 396 void __init v2m_dt_map_io(void)
 397 {
 398         const char *map = NULL;
 399
 400         of_scan_flat_dt(v2m_dt_scan_memory_map, &map);
 401
 402         if (map && strcmp(map, "rs1") == 0)
 403                 iotable_init(&v2m_rs1_io_desc, 1);
 404         else
 405                 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
 406
 407 #if defined(CONFIG_SMP)
 408         vexpress_dt_smp_map_io();
 409 #endif
 410 }
 411
 412 void __init v2m_dt_init_early(void)
 413 {
 414         u32 dt_hbi;
 415
 416         vexpress_sysreg_of_early_init();
 417
 418         /* Confirm board type against DT property, if available */
 419         if (of_property_read_u32(of_allnodes, "arm,hbi", &dt_hbi) == 0) {
 420                 u32 hbi = vexpress_get_hbi(VEXPRESS_SITE_MASTER);
 421
 422                 if (WARN_ON(dt_hbi != hbi))
 423                         pr_warning("vexpress: DT HBI (%x) is not matching "
 424                                         "hardware (%x)!\n", dt_hbi, hbi);
 425         }
 426 }
 427
 428 static void __init v2m_dt_timer_init(void)
 429 {
 430         of_clk_init(NULL);
 431
 432         clocksource_of_init();
 433
 434         versatile_sched_clock_init(vexpress_get_24mhz_clock_base(),
 435                                 24000000);
 436 }
 437
 438 static const struct of_device_id v2m_dt_bus_match[] __initconst = {
 439         { .compatible = "simple-bus", },
 440         { .compatible = "arm,amba-bus", },
 441         { .compatible = "arm,vexpress,config-bus", },
 442         {}
 443 };
 444
 445 static void __init v2m_dt_init(void)
 446 {
 447         l2x0_of_init(0x00400000, 0xfe0fffff);
 448         of_platform_populate(NULL, v2m_dt_bus_match, NULL, NULL);
 449 }
 450
 451 static const char * const v2m_dt_match[] __initconst = {
 452         "arm,vexpress",
 453         NULL,
 454 };
 455
 456 DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
 457         .dt_compat      = v2m_dt_match,
 458         .smp            = smp_ops(vexpress_smp_ops),
 459         .map_io         = v2m_dt_map_io,
 460         .init_early     = v2m_dt_init_early,
 461         .init_irq       = irqchip_init,
 462         .init_time      = v2m_dt_timer_init,
 463         .init_machine   = v2m_dt_init,
 464 MACHINE_END