arch/arm/mach-omap1/usb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Platform level USB initialization for FS USB OTG controller on omap1
   4  *
   5  * Copyright (C) 2004 Texas Instruments, Inc.
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/kernel.h>
  10 #include <linux/init.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/io.h>
  13
  14 #include <asm/irq.h>
  15
  16 #include <mach/mux.h>
  17
  18 #include <mach/usb.h>
  19
  20 #include "common.h"
  21
  22 /* These routines should handle the standard chip-specific modes
  23  * for usb0/1/2 ports, covering basic mux and transceiver setup.
  24  *
  25  * Some board-*.c files will need to set up additional mux options,
  26  * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
  27  */
  28
  29 /* TESTED ON:
  30  *  - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
  31  *  - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
  32  *  - 5912 OSK UDC, with *nonstandard* A-to-A cable
  33  *  - 1510 Innovator UDC with bundled usb0 cable
  34  *  - 1510 Innovator OHCI with bundled usb1/usb2 cable
  35  *  - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
  36  *  - 1710 custom development board using alternate pin group
  37  *  - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
  38  */
  39
  40 #define INT_USB_IRQ_GEN         IH2_BASE + 20
  41 #define INT_USB_IRQ_NISO        IH2_BASE + 30
  42 #define INT_USB_IRQ_ISO         IH2_BASE + 29
  43 #define INT_USB_IRQ_HGEN        INT_USB_HHC_1
  44 #define INT_USB_IRQ_OTG         IH2_BASE + 8
  45
  46 #ifdef  CONFIG_ARCH_OMAP_OTG
  47
  48 static void __init
  49 omap_otg_init(struct omap_usb_config *config)
  50 {
  51         u32             syscon;
  52         int             alt_pingroup = 0;
  53         u16             w;
  54
  55         /* NOTE:  no bus or clock setup (yet?) */
  56
  57         syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
  58         if (!(syscon & OTG_RESET_DONE))
  59                 pr_debug("USB resets not complete?\n");
  60
  61         //omap_writew(0, OTG_IRQ_EN);
  62
  63         /* pin muxing and transceiver pinouts */
  64         if (config->pins[0] > 2)        /* alt pingroup 2 */
  65                 alt_pingroup = 1;
  66         syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
  67         syscon |= config->usb1_init(config->pins[1]);
  68         syscon |= config->usb2_init(config->pins[2], alt_pingroup);
  69         pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
  70         omap_writel(syscon, OTG_SYSCON_1);
  71
  72         syscon = config->hmc_mode;
  73         syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
  74 #ifdef  CONFIG_USB_OTG
  75         if (config->otg)
  76                 syscon |= OTG_EN;
  77 #endif
  78         pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
  79                  omap_readl(USB_TRANSCEIVER_CTRL));
  80         pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
  81         omap_writel(syscon, OTG_SYSCON_2);
  82
  83         printk("USB: hmc %d", config->hmc_mode);
  84         if (!alt_pingroup)
  85                 pr_cont(", usb2 alt %d wires", config->pins[2]);
  86         else if (config->pins[0])
  87                 pr_cont(", usb0 %d wires%s", config->pins[0],
  88                         is_usb0_device(config) ? " (dev)" : "");
  89         if (config->pins[1])
  90                 pr_cont(", usb1 %d wires", config->pins[1]);
  91         if (!alt_pingroup && config->pins[2])
  92                 pr_cont(", usb2 %d wires", config->pins[2]);
  93         if (config->otg)
  94                 pr_cont(", Mini-AB on usb%d", config->otg - 1);
  95         pr_cont("\n");
  96
  97         /* leave USB clocks/controllers off until needed */
  98         w = omap_readw(ULPD_SOFT_REQ);
  99         w &= ~SOFT_USB_CLK_REQ;
 100         omap_writew(w, ULPD_SOFT_REQ);
 101
 102         w = omap_readw(ULPD_CLOCK_CTRL);
 103         w &= ~USB_MCLK_EN;
 104         w |= DIS_USB_PVCI_CLK;
 105         omap_writew(w, ULPD_CLOCK_CTRL);
 106
 107         syscon = omap_readl(OTG_SYSCON_1);
 108         syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
 109
 110 #if IS_ENABLED(CONFIG_USB_OMAP)
 111         if (config->otg || config->register_dev) {
 112                 struct platform_device *udc_device = config->udc_device;
 113                 int status;
 114
 115                 syscon &= ~DEV_IDLE_EN;
 116                 udc_device->dev.platform_data = config;
 117                 status = platform_device_register(udc_device);
 118                 if (status)
 119                         pr_debug("can't register UDC device, %d\n", status);
 120         }
 121 #endif
 122
 123 #if     IS_ENABLED(CONFIG_USB_OHCI_HCD)
 124         if (config->otg || config->register_host) {
 125                 struct platform_device *ohci_device = config->ohci_device;
 126                 int status;
 127
 128                 syscon &= ~HST_IDLE_EN;
 129                 ohci_device->dev.platform_data = config;
 130                 status = platform_device_register(ohci_device);
 131                 if (status)
 132                         pr_debug("can't register OHCI device, %d\n", status);
 133         }
 134 #endif
 135
 136 #ifdef  CONFIG_USB_OTG
 137         if (config->otg) {
 138                 struct platform_device *otg_device = config->otg_device;
 139                 int status;
 140
 141                 syscon &= ~OTG_IDLE_EN;
 142                 otg_device->dev.platform_data = config;
 143                 status = platform_device_register(otg_device);
 144                 if (status)
 145                         pr_debug("can't register OTG device, %d\n", status);
 146         }
 147 #endif
 148         pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
 149         omap_writel(syscon, OTG_SYSCON_1);
 150 }
 151
 152 #else
 153 static void omap_otg_init(struct omap_usb_config *config) {}
 154 #endif
 155
 156 #if IS_ENABLED(CONFIG_USB_OMAP)
 157
 158 static struct resource udc_resources[] = {
 159         /* order is significant! */
 160         {               /* registers */
 161                 .start          = UDC_BASE,
 162                 .end            = UDC_BASE + 0xff,
 163                 .flags          = IORESOURCE_MEM,
 164         }, {            /* general IRQ */
 165                 .start          = INT_USB_IRQ_GEN,
 166                 .flags          = IORESOURCE_IRQ,
 167         }, {            /* PIO IRQ */
 168                 .start          = INT_USB_IRQ_NISO,
 169                 .flags          = IORESOURCE_IRQ,
 170         }, {            /* SOF IRQ */
 171                 .start          = INT_USB_IRQ_ISO,
 172                 .flags          = IORESOURCE_IRQ,
 173         },
 174 };
 175
 176 static u64 udc_dmamask = ~(u32)0;
 177
 178 static struct platform_device udc_device = {
 179         .name           = "omap_udc",
 180         .id             = -1,
 181         .dev = {
 182                 .dma_mask               = &udc_dmamask,
 183                 .coherent_dma_mask      = 0xffffffff,
 184         },
 185         .num_resources  = ARRAY_SIZE(udc_resources),
 186         .resource       = udc_resources,
 187 };
 188
 189 static inline void udc_device_init(struct omap_usb_config *pdata)
 190 {
 191         /* IRQ numbers for omap7xx */
 192         if(cpu_is_omap7xx()) {
 193                 udc_resources[1].start = INT_7XX_USB_GENI;
 194                 udc_resources[2].start = INT_7XX_USB_NON_ISO;
 195                 udc_resources[3].start = INT_7XX_USB_ISO;
 196         }
 197         pdata->udc_device = &udc_device;
 198 }
 199
 200 #else
 201
 202 static inline void udc_device_init(struct omap_usb_config *pdata)
 203 {
 204 }
 205
 206 #endif
 207
 208 #if     IS_ENABLED(CONFIG_USB_OHCI_HCD)
 209
 210 /* The dmamask must be set for OHCI to work */
 211 static u64 ohci_dmamask = ~(u32)0;
 212
 213 static struct resource ohci_resources[] = {
 214         {
 215                 .start  = OMAP_OHCI_BASE,
 216                 .end    = OMAP_OHCI_BASE + 0xff,
 217                 .flags  = IORESOURCE_MEM,
 218         },
 219         {
 220                 .start  = INT_USB_IRQ_HGEN,
 221                 .flags  = IORESOURCE_IRQ,
 222         },
 223 };
 224
 225 static struct platform_device ohci_device = {
 226         .name                   = "ohci",
 227         .id                     = -1,
 228         .dev = {
 229                 .dma_mask               = &ohci_dmamask,
 230                 .coherent_dma_mask      = 0xffffffff,
 231         },
 232         .num_resources  = ARRAY_SIZE(ohci_resources),
 233         .resource               = ohci_resources,
 234 };
 235
 236 static inline void ohci_device_init(struct omap_usb_config *pdata)
 237 {
 238         if (cpu_is_omap7xx())
 239                 ohci_resources[1].start = INT_7XX_USB_HHC_1;
 240         pdata->ohci_device = &ohci_device;
 241         pdata->ocpi_enable = &ocpi_enable;
 242 }
 243
 244 #else
 245
 246 static inline void ohci_device_init(struct omap_usb_config *pdata)
 247 {
 248 }
 249
 250 #endif
 251
 252 #if     defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
 253
 254 static struct resource otg_resources[] = {
 255         /* order is significant! */
 256         {
 257                 .start          = OTG_BASE,
 258                 .end            = OTG_BASE + 0xff,
 259                 .flags          = IORESOURCE_MEM,
 260         }, {
 261                 .start          = INT_USB_IRQ_OTG,
 262                 .flags          = IORESOURCE_IRQ,
 263         },
 264 };
 265
 266 static struct platform_device otg_device = {
 267         .name           = "omap_otg",
 268         .id             = -1,
 269         .num_resources  = ARRAY_SIZE(otg_resources),
 270         .resource       = otg_resources,
 271 };
 272
 273 static inline void otg_device_init(struct omap_usb_config *pdata)
 274 {
 275         if (cpu_is_omap7xx())
 276                 otg_resources[1].start = INT_7XX_USB_OTG;
 277         pdata->otg_device = &otg_device;
 278 }
 279
 280 #else
 281
 282 static inline void otg_device_init(struct omap_usb_config *pdata)
 283 {
 284 }
 285
 286 #endif
 287
 288 static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
 289 {
 290         u32     syscon1 = 0;
 291
 292         if (nwires == 0) {
 293                 if (!cpu_is_omap15xx()) {
 294                         u32 l;
 295
 296                         /* pulldown D+/D- */
 297                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 298                         l &= ~(3 << 1);
 299                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 300                 }
 301                 return 0;
 302         }
 303
 304         if (is_device) {
 305                 if (cpu_is_omap7xx()) {
 306                         omap_cfg_reg(AA17_7XX_USB_DM);
 307                         omap_cfg_reg(W16_7XX_USB_PU_EN);
 308                         omap_cfg_reg(W17_7XX_USB_VBUSI);
 309                         omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
 310                         omap_cfg_reg(W19_7XX_USB_DCRST);
 311                 } else
 312                         omap_cfg_reg(W4_USB_PUEN);
 313         }
 314
 315         if (nwires == 2) {
 316                 u32 l;
 317
 318                 // omap_cfg_reg(P9_USB_DP);
 319                 // omap_cfg_reg(R8_USB_DM);
 320
 321                 if (cpu_is_omap15xx()) {
 322                         /* This works on 1510-Innovator */
 323                         return 0;
 324                 }
 325
 326                 /* NOTES:
 327                  *  - peripheral should configure VBUS detection!
 328                  *  - only peripherals may use the internal D+/D- pulldowns
 329                  *  - OTG support on this port not yet written
 330                  */
 331
 332                 /* Don't do this for omap7xx -- it causes USB to not work correctly */
 333                 if (!cpu_is_omap7xx()) {
 334                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 335                         l &= ~(7 << 4);
 336                         if (!is_device)
 337                                 l |= (3 << 1);
 338                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 339                 }
 340
 341                 return 3 << 16;
 342         }
 343
 344         /* alternate pin config, external transceiver */
 345         if (cpu_is_omap15xx()) {
 346                 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
 347                 return 0;
 348         }
 349
 350         omap_cfg_reg(V6_USB0_TXD);
 351         omap_cfg_reg(W9_USB0_TXEN);
 352         omap_cfg_reg(W5_USB0_SE0);
 353         if (nwires != 3)
 354                 omap_cfg_reg(Y5_USB0_RCV);
 355
 356         /* NOTE:  SPEED and SUSP aren't configured here.  OTG hosts
 357          * may be able to use I2C requests to set those bits along
 358          * with VBUS switching and overcurrent detection.
 359          */
 360
 361         if (nwires != 6) {
 362                 u32 l;
 363
 364                 l = omap_readl(USB_TRANSCEIVER_CTRL);
 365                 l &= ~CONF_USB2_UNI_R;
 366                 omap_writel(l, USB_TRANSCEIVER_CTRL);
 367         }
 368
 369         switch (nwires) {
 370         case 3:
 371                 syscon1 = 2;
 372                 break;
 373         case 4:
 374                 syscon1 = 1;
 375                 break;
 376         case 6:
 377                 syscon1 = 3;
 378                 {
 379                         u32 l;
 380
 381                         omap_cfg_reg(AA9_USB0_VP);
 382                         omap_cfg_reg(R9_USB0_VM);
 383                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 384                         l |= CONF_USB2_UNI_R;
 385                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 386                 }
 387                 break;
 388         default:
 389                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 390                         0, nwires);
 391         }
 392
 393         return syscon1 << 16;
 394 }
 395
 396 static u32 __init omap1_usb1_init(unsigned nwires)
 397 {
 398         u32     syscon1 = 0;
 399
 400         if (!cpu_is_omap15xx() && nwires != 6) {
 401                 u32 l;
 402
 403                 l = omap_readl(USB_TRANSCEIVER_CTRL);
 404                 l &= ~CONF_USB1_UNI_R;
 405                 omap_writel(l, USB_TRANSCEIVER_CTRL);
 406         }
 407         if (nwires == 0)
 408                 return 0;
 409
 410         /* external transceiver */
 411         omap_cfg_reg(USB1_TXD);
 412         omap_cfg_reg(USB1_TXEN);
 413         if (nwires != 3)
 414                 omap_cfg_reg(USB1_RCV);
 415
 416         if (cpu_is_omap15xx()) {
 417                 omap_cfg_reg(USB1_SEO);
 418                 omap_cfg_reg(USB1_SPEED);
 419                 // SUSP
 420         } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
 421                 omap_cfg_reg(W13_1610_USB1_SE0);
 422                 omap_cfg_reg(R13_1610_USB1_SPEED);
 423                 // SUSP
 424         } else if (cpu_is_omap1710()) {
 425                 omap_cfg_reg(R13_1710_USB1_SE0);
 426                 // SUSP
 427         } else {
 428                 pr_debug("usb%d cpu unrecognized\n", 1);
 429                 return 0;
 430         }
 431
 432         switch (nwires) {
 433         case 2:
 434                 goto bad;
 435         case 3:
 436                 syscon1 = 2;
 437                 break;
 438         case 4:
 439                 syscon1 = 1;
 440                 break;
 441         case 6:
 442                 syscon1 = 3;
 443                 omap_cfg_reg(USB1_VP);
 444                 omap_cfg_reg(USB1_VM);
 445                 if (!cpu_is_omap15xx()) {
 446                         u32 l;
 447
 448                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 449                         l |= CONF_USB1_UNI_R;
 450                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 451                 }
 452                 break;
 453         default:
 454 bad:
 455                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 456                         1, nwires);
 457         }
 458
 459         return syscon1 << 20;
 460 }
 461
 462 static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
 463 {
 464         u32     syscon1 = 0;
 465
 466         /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
 467         if (alt_pingroup || nwires == 0)
 468                 return 0;
 469
 470         if (!cpu_is_omap15xx() && nwires != 6) {
 471                 u32 l;
 472
 473                 l = omap_readl(USB_TRANSCEIVER_CTRL);
 474                 l &= ~CONF_USB2_UNI_R;
 475                 omap_writel(l, USB_TRANSCEIVER_CTRL);
 476         }
 477
 478         /* external transceiver */
 479         if (cpu_is_omap15xx()) {
 480                 omap_cfg_reg(USB2_TXD);
 481                 omap_cfg_reg(USB2_TXEN);
 482                 omap_cfg_reg(USB2_SEO);
 483                 if (nwires != 3)
 484                         omap_cfg_reg(USB2_RCV);
 485                 /* there is no USB2_SPEED */
 486         } else if (cpu_is_omap16xx()) {
 487                 omap_cfg_reg(V6_USB2_TXD);
 488                 omap_cfg_reg(W9_USB2_TXEN);
 489                 omap_cfg_reg(W5_USB2_SE0);
 490                 if (nwires != 3)
 491                         omap_cfg_reg(Y5_USB2_RCV);
 492                 // FIXME omap_cfg_reg(USB2_SPEED);
 493         } else {
 494                 pr_debug("usb%d cpu unrecognized\n", 1);
 495                 return 0;
 496         }
 497
 498         // omap_cfg_reg(USB2_SUSP);
 499
 500         switch (nwires) {
 501         case 2:
 502                 goto bad;
 503         case 3:
 504                 syscon1 = 2;
 505                 break;
 506         case 4:
 507                 syscon1 = 1;
 508                 break;
 509         case 5:
 510                 goto bad;
 511         case 6:
 512                 syscon1 = 3;
 513                 if (cpu_is_omap15xx()) {
 514                         omap_cfg_reg(USB2_VP);
 515                         omap_cfg_reg(USB2_VM);
 516                 } else {
 517                         u32 l;
 518
 519                         omap_cfg_reg(AA9_USB2_VP);
 520                         omap_cfg_reg(R9_USB2_VM);
 521                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 522                         l |= CONF_USB2_UNI_R;
 523                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 524                 }
 525                 break;
 526         default:
 527 bad:
 528                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 529                         2, nwires);
 530         }
 531
 532         return syscon1 << 24;
 533 }
 534
 535 #ifdef  CONFIG_ARCH_OMAP15XX
 536
 537 /* ULPD_DPLL_CTRL */
 538 #define DPLL_IOB                (1 << 13)
 539 #define DPLL_PLL_ENABLE         (1 << 4)
 540 #define DPLL_LOCK               (1 << 0)
 541
 542 /* ULPD_APLL_CTRL */
 543 #define APLL_NDPLL_SWITCH       (1 << 0)
 544
 545 static void __init omap_1510_usb_init(struct omap_usb_config *config)
 546 {
 547         unsigned int val;
 548         u16 w;
 549
 550         config->usb0_init(config->pins[0], is_usb0_device(config));
 551         config->usb1_init(config->pins[1]);
 552         config->usb2_init(config->pins[2], 0);
 553
 554         val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
 555         val |= (config->hmc_mode << 1);
 556         omap_writel(val, MOD_CONF_CTRL_0);
 557
 558         printk("USB: hmc %d", config->hmc_mode);
 559         if (config->pins[0])
 560                 pr_cont(", usb0 %d wires%s", config->pins[0],
 561                         is_usb0_device(config) ? " (dev)" : "");
 562         if (config->pins[1])
 563                 pr_cont(", usb1 %d wires", config->pins[1]);
 564         if (config->pins[2])
 565                 pr_cont(", usb2 %d wires", config->pins[2]);
 566         pr_cont("\n");
 567
 568         /* use DPLL for 48 MHz function clock */
 569         pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
 570                         omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
 571
 572         w = omap_readw(ULPD_APLL_CTRL);
 573         w &= ~APLL_NDPLL_SWITCH;
 574         omap_writew(w, ULPD_APLL_CTRL);
 575
 576         w = omap_readw(ULPD_DPLL_CTRL);
 577         w |= DPLL_IOB | DPLL_PLL_ENABLE;
 578         omap_writew(w, ULPD_DPLL_CTRL);
 579
 580         w = omap_readw(ULPD_SOFT_REQ);
 581         w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
 582         omap_writew(w, ULPD_SOFT_REQ);
 583
 584         while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
 585                 cpu_relax();
 586
 587 #if IS_ENABLED(CONFIG_USB_OMAP)
 588         if (config->register_dev) {
 589                 int status;
 590
 591                 udc_device.dev.platform_data = config;
 592                 status = platform_device_register(&udc_device);
 593                 if (status)
 594                         pr_debug("can't register UDC device, %d\n", status);
 595                 /* udc driver gates 48MHz by D+ pullup */
 596         }
 597 #endif
 598
 599 #if     IS_ENABLED(CONFIG_USB_OHCI_HCD)
 600         if (config->register_host) {
 601                 int status;
 602
 603                 ohci_device.dev.platform_data = config;
 604                 status = platform_device_register(&ohci_device);
 605                 if (status)
 606                         pr_debug("can't register OHCI device, %d\n", status);
 607                 /* hcd explicitly gates 48MHz */
 608         }
 609 #endif
 610 }
 611
 612 #else
 613 static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
 614 #endif
 615
 616 void __init omap1_usb_init(struct omap_usb_config *_pdata)
 617 {
 618         struct omap_usb_config *pdata;
 619
 620         pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
 621         if (!pdata)
 622                 return;
 623
 624         pdata->usb0_init = omap1_usb0_init;
 625         pdata->usb1_init = omap1_usb1_init;
 626         pdata->usb2_init = omap1_usb2_init;
 627         udc_device_init(pdata);
 628         ohci_device_init(pdata);
 629         otg_device_init(pdata);
 630
 631         if (cpu_is_omap7xx() || cpu_is_omap16xx())
 632                 omap_otg_init(pdata);
 633         else if (cpu_is_omap15xx())
 634                 omap_1510_usb_init(pdata);
 635         else
 636                 printk(KERN_ERR "USB: No init for your chip yet\n");
 637 }