board/inka4x0/inkadiag.c

   1 /*
   2  * (C) Copyright 2008, 2009 Andreas Pfefferle,
   3  *     DENX Software Engineering, ap@denx.de.
   4  * (C) Copyright 2009 Detlev Zundel,
   5  *     DENX Software Engineering, dzu@denx.de.
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <asm/io.h>
  27 #include <common.h>
  28 #include <config.h>
  29 #include <mpc5xxx.h>
  30 #include <pci.h>
  31
  32 #include <command.h>
  33
  34 /* This is needed for the includes in ns16550.h */
  35 #define CONFIG_SYS_NS16550_REG_SIZE 1
  36 #include <ns16550.h>
  37
  38 #define GPIO_BASE               ((u_char *)CONFIG_SYS_CS3_START)
  39
  40 #define DIGIN_TOUCHSCR_MASK     0x00003000      /* Inputs 12-13 */
  41 #define DIGIN_KEYB_MASK         0x00010000      /* Input 16 */
  42
  43 #define DIGIN_DRAWER_SW1        0x00400000      /* Input 22 */
  44 #define DIGIN_DRAWER_SW2        0x00800000      /* Input 23 */
  45
  46 #define DIGIO_LED0              0x00000001      /* Output 0 */
  47 #define DIGIO_LED1              0x00000002      /* Output 1 */
  48 #define DIGIO_LED2              0x00000004      /* Output 2 */
  49 #define DIGIO_LED3              0x00000008      /* Output 3 */
  50 #define DIGIO_LED4              0x00000010      /* Output 4 */
  51 #define DIGIO_LED5              0x00000020      /* Output 5 */
  52
  53 #define DIGIO_DRAWER1           0x00000100      /* Output 8 */
  54 #define DIGIO_DRAWER2           0x00000200      /* Output 9 */
  55
  56 #define SERIAL_PORT_BASE        ((u_char *)CONFIG_SYS_CS2_START)
  57
  58 #define PSC_OP1_RTS     0x01
  59 #define PSC_OP0_RTS     0x01
  60
  61 /*
  62  * Table with supported baudrates (defined in inka4x0.h)
  63  */
  64 static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
  65 #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
  66
  67 static unsigned int inka_digin_get_input(void)
  68 {
  69         return in_8(GPIO_BASE + 0) << 0 | in_8(GPIO_BASE + 1) << 8 |
  70                 in_8(GPIO_BASE + 2) << 16 | in_8(GPIO_BASE + 3) << 24;
  71 }
  72
  73 #define LED_HIGH(NUM)                                                   \
  74         do {                                                            \
  75                 setbits_be32((unsigned *)MPC5XXX_GPT##NUM##_ENABLE, 0x10); \
  76         } while (0)
  77
  78 #define LED_LOW(NUM)                                                    \
  79         do {                                                            \
  80                 clrbits_be32((unsigned *)MPC5XXX_GPT##NUM##_ENABLE, 0x10); \
  81         } while (0)
  82
  83 #define CHECK_LED(NUM) \
  84     do { \
  85             if (state & (1 << NUM)) {           \
  86                     LED_HIGH(NUM);              \
  87             } else {                            \
  88                     LED_LOW(NUM);               \
  89             }                                   \
  90     } while (0)
  91
  92 static void inka_digio_set_output(unsigned int state, int which)
  93 {
  94         volatile struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
  95
  96         if (which == 0) {
  97                 /* other */
  98                 CHECK_LED(0);
  99                 CHECK_LED(1);
 100                 CHECK_LED(2);
 101                 CHECK_LED(3);
 102                 CHECK_LED(4);
 103                 CHECK_LED(5);
 104         } else {
 105                 if (which == 1) {
 106                         /* drawer1 */
 107                         if (state) {
 108                                 clrbits_be32(&gpio->simple_dvo, 0x1000);
 109                                 udelay(1);
 110                                 setbits_be32(&gpio->simple_dvo, 0x1000);
 111                         } else {
 112                                 setbits_be32(&gpio->simple_dvo, 0x1000);
 113                                 udelay(1);
 114                                 clrbits_be32(&gpio->simple_dvo, 0x1000);
 115                         }
 116                 }
 117                 if (which == 2) {
 118                         /* drawer 2 */
 119                         if (state) {
 120                                 clrbits_be32(&gpio->simple_dvo, 0x2000);
 121                                 udelay(1);
 122                                 setbits_be32(&gpio->simple_dvo, 0x2000);
 123                         } else {
 124                                 setbits_be32(&gpio->simple_dvo, 0x2000);
 125                                 udelay(1);
 126                                 clrbits_be32(&gpio->simple_dvo, 0x2000);
 127                         }
 128                 }
 129         }
 130         udelay(1);
 131 }
 132
 133 static int do_inkadiag_io(cmd_tbl_t *cmdtp, int flag, int argc,
 134                           char * const argv[]) {
 135         unsigned int state, val;
 136
 137         switch (argc) {
 138         case 3:
 139                 /* Write a value */
 140                 val = simple_strtol(argv[2], NULL, 16);
 141
 142                 if (strcmp(argv[1], "drawer1") == 0) {
 143                         inka_digio_set_output(val, 1);
 144                 } else if (strcmp(argv[1], "drawer2") == 0) {
 145                         inka_digio_set_output(val, 2);
 146                 } else if (strcmp(argv[1], "other") == 0)
 147                         inka_digio_set_output(val, 0);
 148                 else {
 149                         printf("Invalid argument: %s\n", argv[1]);
 150                         return -1;
 151                 }
 152                 /* fall through */
 153         case 2:
 154                 /* Read a value */
 155                 state = inka_digin_get_input();
 156
 157                 if (strcmp(argv[1], "drawer1") == 0) {
 158                         val = (state & DIGIN_DRAWER_SW1) >> (ffs(DIGIN_DRAWER_SW1) - 1);
 159                 } else if (strcmp(argv[1], "drawer2") == 0) {
 160                         val = (state & DIGIN_DRAWER_SW2) >> (ffs(DIGIN_DRAWER_SW2) - 1);
 161                 } else if (strcmp(argv[1], "other") == 0) {
 162                         val = ((state & DIGIN_KEYB_MASK) >> (ffs(DIGIN_KEYB_MASK) - 1))
 163                                 | (state & DIGIN_TOUCHSCR_MASK) >> (ffs(DIGIN_TOUCHSCR_MASK) - 2);
 164                 } else {
 165                         printf("Invalid argument: %s\n", argv[1]);
 166                         return -1;
 167                 }
 168                 printf("exit code: 0x%X\n", val);
 169                 return 0;
 170         default:
 171                 return cmd_usage(cmdtp);
 172         }
 173
 174         return -1;
 175 }
 176
 177 DECLARE_GLOBAL_DATA_PTR;
 178
 179 static int ser_init(volatile struct mpc5xxx_psc *psc, int baudrate)
 180 {
 181         unsigned long baseclk;
 182         int div;
 183
 184         /* reset PSC */
 185         out_8(&psc->command, PSC_SEL_MODE_REG_1);
 186
 187         /* select clock sources */
 188
 189         out_be16(&psc->psc_clock_select, 0);
 190         baseclk = (gd->ipb_clk + 16) / 32;
 191
 192         /* switch to UART mode */
 193         out_be32(&psc->sicr, 0);
 194
 195         /* configure parity, bit length and so on */
 196
 197         out_8(&psc->mode, PSC_MODE_8_BITS | PSC_MODE_PARNONE);
 198         out_8(&psc->mode, PSC_MODE_ONE_STOP);
 199
 200         /* set up UART divisor */
 201         div = (baseclk + (baudrate / 2)) / baudrate;
 202         out_8(&psc->ctur, (div >> 8) & 0xff);
 203         out_8(&psc->ctlr, div & 0xff);
 204
 205         /* disable all interrupts */
 206         out_be16(&psc->psc_imr, 0);
 207
 208         /* reset and enable Rx/Tx */
 209         out_8(&psc->command, PSC_RST_RX);
 210         out_8(&psc->command, PSC_RST_TX);
 211         out_8(&psc->command, PSC_RX_ENABLE | PSC_TX_ENABLE);
 212
 213         return 0;
 214 }
 215
 216 static void ser_putc(volatile struct mpc5xxx_psc *psc, const char c)
 217 {
 218         /* Wait 1 second for last character to go. */
 219         int i = 0;
 220
 221         while (!(psc->psc_status & PSC_SR_TXEMP) && (i++ < 1000000/10))
 222                 udelay(10);
 223         psc->psc_buffer_8 = c;
 224
 225 }
 226
 227 static int ser_getc(volatile struct mpc5xxx_psc *psc)
 228 {
 229         /* Wait for a character to arrive. */
 230         int i = 0;
 231
 232         while (!(in_be16(&psc->psc_status) & PSC_SR_RXRDY) && (i++ < 1000000/10))
 233                 udelay(10);
 234
 235         return in_8(&psc->psc_buffer_8);
 236 }
 237
 238 static int do_inkadiag_serial(cmd_tbl_t *cmdtp, int flag, int argc,
 239                               char * const argv[]) {
 240         volatile struct NS16550 *uart;
 241         volatile struct mpc5xxx_psc *psc;
 242         unsigned int num, mode;
 243         int combrd, baudrate, i, j, len;
 244         int address;
 245
 246         if (argc < 5)
 247                 return cmd_usage(cmdtp);
 248
 249         argc--;
 250         argv++;
 251
 252         num = simple_strtol(argv[0], NULL, 0);
 253         if (num < 0 || num > 11) {
 254                 printf("invalid argument for num: %d\n", num);
 255                 return -1;
 256         }
 257
 258         mode = simple_strtol(argv[1], NULL, 0);
 259
 260         combrd = 0;
 261         baudrate = simple_strtoul(argv[2], NULL, 10);
 262         for (i=0; i<N_BAUDRATES; ++i) {
 263                 if (baudrate == baudrate_table[i])
 264                         break;
 265         }
 266         if (i == N_BAUDRATES) {
 267                 printf("## Baudrate %d bps not supported\n",
 268                        baudrate);
 269                 return 1;
 270         }
 271         combrd = 115200 / baudrate;
 272
 273         uart = (struct NS16550 *)(SERIAL_PORT_BASE + (num << 3));
 274
 275         printf("Testing uart %d.\n\n", num);
 276
 277         if ((num >= 0) && (num <= 7)) {
 278                 if (mode & 1) {
 279                         /* turn on 'loopback' mode */
 280                         out_8(&uart->mcr, UART_MCR_LOOP);
 281                 } else {
 282                         /*
 283                          * establish the UART's operational parameters
 284                          * set DLAB=1, so rbr accesses DLL
 285                          */
 286                         out_8(&uart->lcr, UART_LCR_DLAB);
 287                         /* set baudrate */
 288                         out_8(&uart->rbr, combrd);
 289                         /* set data-format: 8-N-1 */
 290                         out_8(&uart->lcr, UART_LCR_WLS_8);
 291                 }
 292
 293                 if (mode & 2) {
 294                         /* set request to send */
 295                         out_8(&uart->mcr, UART_MCR_RTS);
 296                         udelay(10);
 297                         /* check clear to send */
 298                         if ((in_8(&uart->msr) & UART_MSR_CTS) == 0x00)
 299                                 return -1;
 300                 }
 301                 if (mode & 4) {
 302                         /* set data terminal ready */
 303                         out_8(&uart->mcr, UART_MCR_DTR);
 304                         udelay(10);
 305                         /* check data set ready and carrier detect */
 306                         if ((in_8(&uart->msr) & (UART_MSR_DSR | UART_MSR_DCD))
 307                             != (UART_MSR_DSR | UART_MSR_DCD))
 308                                 return -1;
 309                 }
 310
 311                 /* write each message-character, read it back, and display it */
 312                 for (i = 0, len = strlen(argv[3]); i < len; ++i) {
 313                         j = 0;
 314                         while ((in_8(&uart->lsr) & UART_LSR_THRE) ==    0x00) {
 315                                 if (j++ > CONFIG_SYS_HZ)
 316                                         break;
 317                                 udelay(10);
 318                         }
 319                         out_8(&uart->rbr, argv[3][i]);
 320                         j = 0;
 321                         while ((in_8(&uart->lsr) & UART_LSR_DR) == 0x00) {
 322                                 if (j++ > CONFIG_SYS_HZ)
 323                                         break;
 324                                 udelay(10);
 325                         }
 326                         printf("%c", in_8(&uart->rbr));
 327                 }
 328                 printf("\n\n");
 329                 out_8(&uart->mcr, 0x00);
 330         } else {
 331                 address = 0;
 332
 333                 switch (num) {
 334                 case 8:
 335                         address = MPC5XXX_PSC6;
 336                         break;
 337                 case 9:
 338                         address = MPC5XXX_PSC3;
 339                         break;
 340                 case 10:
 341                         address = MPC5XXX_PSC2;
 342                         break;
 343                 case 11:
 344                         address = MPC5XXX_PSC1;
 345                         break;
 346                 }
 347                 psc = (struct mpc5xxx_psc *)address;
 348                 ser_init(psc, simple_strtol(argv[2], NULL, 0));
 349                 if (mode & 2) {
 350                         /* set request to send */
 351                         out_8(&psc->op0, PSC_OP0_RTS);
 352                         udelay(10);
 353                         /* check clear to send */
 354                         if ((in_8(&psc->ip) & PSC_IPCR_CTS) == 0)
 355                                 return -1;
 356                 }
 357                 len = strlen(argv[3]);
 358                 for (i = 0; i < len; ++i) {
 359                         ser_putc(psc, argv[3][i]);
 360                         printf("%c", ser_getc(psc));
 361                 }
 362                 printf("\n\n");
 363         }
 364         return 0;
 365 }
 366
 367 #define BUZZER_GPT      (MPC5XXX_GPT + 0x60)    /* GPT6 */
 368 static void buzzer_turn_on(unsigned int freq)
 369 {
 370         volatile struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt *)(BUZZER_GPT);
 371
 372         const u32 prescale = gd->ipb_clk / freq / 128;
 373         const u32 count = 128;
 374         const u32 width = 64;
 375
 376         gpt->cir = (prescale << 16) | count;
 377         gpt->pwmcr = width << 16;
 378         gpt->emsr = 3;          /* Timer enabled for PWM */
 379 }
 380
 381 static void buzzer_turn_off(void)
 382 {
 383         volatile struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt *)(BUZZER_GPT);
 384
 385         gpt->emsr = 0;
 386 }
 387
 388 static int do_inkadiag_buzzer(cmd_tbl_t *cmdtp, int flag, int argc,
 389                               char * const argv[]) {
 390
 391         unsigned int period, freq;
 392         int prev, i;
 393
 394         if (argc != 3)
 395                 return cmd_usage(cmdtp);
 396
 397         argc--;
 398         argv++;
 399
 400         period = simple_strtol(argv[0], NULL, 0);
 401         if (!period)
 402                 printf("Zero period is senseless\n");
 403         argc--;
 404         argv++;
 405
 406         freq = simple_strtol(argv[0], NULL, 0);
 407         /* avoid zero prescale in buzzer_turn_on() */
 408         if (freq > gd->ipb_clk / 128) {
 409                 printf("%dHz exceeds maximum (%ldHz)\n", freq,
 410                        gd->ipb_clk / 128);
 411         } else if (!freq)
 412                 printf("Zero frequency is senseless\n");
 413         else
 414                 buzzer_turn_on(freq);
 415
 416         clear_ctrlc();
 417         prev = disable_ctrlc(0);
 418
 419         printf("Buzzing for %d ms. Type ^C to abort!\n\n", period);
 420
 421         i = 0;
 422         while (!ctrlc() && (i++ < CONFIG_SYS_HZ))
 423                 udelay(period);
 424
 425         clear_ctrlc();
 426         disable_ctrlc(prev);
 427
 428         buzzer_turn_off();
 429
 430         return 0;
 431 }
 432
 433 static int do_inkadiag_help(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 434
 435 cmd_tbl_t cmd_inkadiag_sub[] = {
 436         U_BOOT_CMD_MKENT(io, 1, 1, do_inkadiag_io, "read digital input",
 437          "<drawer1|drawer2|other> [value] - get or set specified signal"),
 438         U_BOOT_CMD_MKENT(serial, 4, 1, do_inkadiag_serial, "test serial port",
 439          "<num> <mode> <baudrate> <msg>  - test uart num [0..11] in mode\n"
 440          "and baudrate with msg"),
 441         U_BOOT_CMD_MKENT(buzzer, 2, 1, do_inkadiag_buzzer, "activate buzzer",
 442          "<period> <freq> - turn buzzer on for period ms with freq hz"),
 443         U_BOOT_CMD_MKENT(help, 4, 1, do_inkadiag_help, "get help",
 444          "[command] - get help for command"),
 445 };
 446
 447 static int do_inkadiag_help(cmd_tbl_t *cmdtp, int flag,
 448                             int argc, char * const argv[]) {
 449         extern int _do_help (cmd_tbl_t *cmd_start, int cmd_items,
 450                              cmd_tbl_t *cmdtp, int flag,
 451                              int argc, char * const argv[]);
 452         /* do_help prints command name - we prepend inkadiag to our subcommands! */
 453 #ifdef CONFIG_SYS_LONGHELP
 454         puts ("inkadiag ");
 455 #endif
 456         return _do_help(&cmd_inkadiag_sub[0],
 457                 ARRAY_SIZE(cmd_inkadiag_sub), cmdtp, flag, argc, argv);
 458 }
 459
 460 static int do_inkadiag(cmd_tbl_t *cmdtp, int flag, int argc,
 461                        char * const argv[]) {
 462         cmd_tbl_t *c;
 463
 464         c = find_cmd_tbl(argv[1], &cmd_inkadiag_sub[0], ARRAY_SIZE(cmd_inkadiag_sub));
 465
 466         if (c) {
 467                 argc--;
 468                 argv++;
 469                 return c->cmd(c, flag, argc, argv);
 470         } else {
 471                 /* Unrecognized command */
 472                 return cmd_usage(cmdtp);
 473         }
 474 }
 475
 476 U_BOOT_CMD(inkadiag, 6, 1, do_inkadiag,
 477            "inkadiag - inka diagnosis\n",
 478            "[inkadiag what ...]\n"
 479            "    - perform a diagnosis on inka hardware\n"
 480            "'inkadiag' performs hardware tests.");