3 * Stefan Strobl, GERSYS GmbH, stefan.strobl@gersys.de
6 * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 * BC3450 specific commands
33 #if defined(CONFIG_CMD_BSP)
36 * Definitions for DS1620 chip
38 #define THERM_START_CONVERT 0xee
39 #define THERM_RESET 0xaf
40 #define THERM_READ_CONFIG 0xac
41 #define THERM_READ_TEMP 0xaa
42 #define THERM_READ_TL 0xa2
43 #define THERM_READ_TH 0xa1
44 #define THERM_WRITE_CONFIG 0x0c
45 #define THERM_WRITE_TL 0x02
46 #define THERM_WRITE_TH 0x01
48 #define CONFIG_SYS_CPU 2
49 #define CONFIG_SYS_1SHOT 1
50 #define CONFIG_SYS_STANDALONE 0
60 #define SM501_GPIO_CTRL_LOW 0x00000008UL /* gpio pins 0..31 */
61 #define SM501_GPIO_CTRL_HIGH 0x0000000CUL /* gpio pins 32..63 */
62 #define SM501_POWER_MODE0_GATE 0x00000040UL
63 #define SM501_POWER_MODE1_GATE 0x00000048UL
64 #define POWER_MODE_GATE_GPIO_PWM_I2C 0x00000040UL
65 #define SM501_GPIO_DATA_LOW 0x00010000UL
66 #define SM501_GPIO_DATA_HIGH 0x00010004UL
67 #define SM501_GPIO_DATA_DIR_LOW 0x00010008UL
68 #define SM501_GPIO_DATA_DIR_HIGH 0x0001000CUL
69 #define SM501_PANEL_DISPLAY_CONTROL 0x00080000UL
70 #define SM501_CRT_DISPLAY_CONTROL 0x00080200UL
72 /* SM501 CRT Display Control Bits */
73 #define SM501_CDC_SEL (1 << 9)
74 #define SM501_CDC_TE (1 << 8)
75 #define SM501_CDC_E (1 << 2)
77 /* SM501 Panel Display Control Bits */
78 #define SM501_PDC_FPEN (1 << 27)
79 #define SM501_PDC_BIAS (1 << 26)
80 #define SM501_PDC_DATA (1 << 25)
81 #define SM501_PDC_VDDEN (1 << 24)
83 /* SM501 GPIO Data LOW Bits */
84 #define SM501_GPIO24 0x01000000
85 #define SM501_GPIO25 0x02000000
86 #define SM501_GPIO26 0x04000000
87 #define SM501_GPIO27 0x08000000
88 #define SM501_GPIO28 0x10000000
89 #define SM501_GPIO29 0x20000000
90 #define SM501_GPIO30 0x40000000
91 #define SM501_GPIO31 0x80000000
93 /* SM501 GPIO Data HIGH Bits */
94 #define SM501_GPIO46 0x00004000
95 #define SM501_GPIO47 0x00008000
96 #define SM501_GPIO48 0x00010000
97 #define SM501_GPIO49 0x00020000
98 #define SM501_GPIO50 0x00040000
99 #define SM501_GPIO51 0x00080000
101 /* BC3450 GPIOs @ SM501 Data LOW */
102 #define DIP (SM501_GPIO24 | SM501_GPIO25 | SM501_GPIO26 | SM501_GPIO27)
103 #define DS1620_DQ SM501_GPIO29 /* I/O */
104 #define DS1620_CLK SM501_GPIO30 /* High active O/P */
105 #define DS1620_RES SM501_GPIO31 /* Low active O/P */
106 /* BC3450 GPIOs @ SM501 Data HIGH */
107 #define BUZZER SM501_GPIO47 /* Low active O/P */
108 #define DS1620_TLOW SM501_GPIO48 /* High active I/P */
109 #define PWR_OFF SM501_GPIO49 /* Low active O/P */
110 #define FP_DATA_TRI SM501_GPIO50 /* High active O/P */
114 * Initialise GPIO on SM501
116 * This function may be called from several other functions.
117 * Yet, the initialisation sequence is executed only the first
118 * time the function is called.
120 int sm501_gpio_init (void)
122 static int init_done = 0;
125 debug("sm501_gpio_init: nothing to be done.\n");
129 /* enable SM501 GPIO control (in both power modes) */
130 *(vu_long *) (SM501_MMIO_BASE + SM501_POWER_MODE0_GATE) |=
131 POWER_MODE_GATE_GPIO_PWM_I2C;
132 *(vu_long *) (SM501_MMIO_BASE + SM501_POWER_MODE1_GATE) |=
133 POWER_MODE_GATE_GPIO_PWM_I2C;
135 /* set up default O/Ps */
136 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &=
137 ~(DS1620_RES | DS1620_CLK);
138 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_DQ;
139 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &=
141 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) |=
144 /* configure directions for SM501 GPIO pins */
145 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_CTRL_LOW) &= ~(0xFF << 24);
146 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_CTRL_HIGH) &=
148 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) &=
150 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) |=
151 (DS1620_RES | DS1620_CLK);
152 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_HIGH) &=
154 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_HIGH) |=
155 (PWR_OFF | BUZZER | FP_DATA_TRI);
158 debug("sm501_gpio_init: done.\n");
165 * dip - read Config Inputs
167 * read and prints the dip switch
168 * and/or external config inputs (4bits) 0...0x0F
170 int cmd_dip (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
176 /* read dip switch */
177 rc = *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW);
180 rc = (int) (rc >> 24);
182 /* plausibility check */
186 printf ("0x%lx\n", rc);
190 U_BOOT_CMD (dip, 1, 1, cmd_dip,
191 "read dip switch and config inputs",
193 " - prints the state of the dip switch and/or\n"
194 " external configuration inputs as hex value.\n"
195 " - \"Config 1\" is the LSB");
199 * buz - turns Buzzer on/off
201 #ifdef CONFIG_BC3450_BUZZER
202 static int cmd_buz (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
205 printf ("Usage:\nspecify one argument: \"on\" or \"off\"\n");
211 if (strncmp (argv[1], "on", 2) == 0) {
212 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &=
215 } else if (strncmp (argv[1], "off", 3) == 0) {
216 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) |=
220 printf ("Usage:\nspecify one argument: \"on\" or \"off\"\n");
224 U_BOOT_CMD (buz, 2, 1, cmd_buz,
225 "turns buzzer on/off",
226 "\n" "buz <on/off>\n" " - turns the buzzer on or off");
227 #endif /* CONFIG_BC3450_BUZZER */
231 * fp - front panel commands
233 static int cmd_fp (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
237 if (strncmp (argv[1], "on", 2) == 0) {
238 /* turn on VDD first */
239 *(vu_long *) (SM501_MMIO_BASE +
240 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_VDDEN;
242 /* then put data on */
243 *(vu_long *) (SM501_MMIO_BASE +
244 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_DATA;
245 /* wait some time and enable backlight */
247 *(vu_long *) (SM501_MMIO_BASE +
248 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_BIAS;
250 *(vu_long *) (SM501_MMIO_BASE +
251 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_FPEN;
253 } else if (strncmp (argv[1], "off", 3) == 0) {
254 /* turn off the backlight first */
255 *(vu_long *) (SM501_MMIO_BASE +
256 SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_FPEN;
258 *(vu_long *) (SM501_MMIO_BASE +
259 SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_BIAS;
261 /* wait some time, then remove data */
262 *(vu_long *) (SM501_MMIO_BASE +
263 SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_DATA;
265 /* and remove VDD last */
266 *(vu_long *) (SM501_MMIO_BASE +
267 SM501_PANEL_DISPLAY_CONTROL) &=
270 } else if (strncmp (argv[1], "bl", 2) == 0) {
271 /* turn on/off backlight only */
272 if (strncmp (argv[2], "on", 2) == 0) {
273 *(vu_long *) (SM501_MMIO_BASE +
274 SM501_PANEL_DISPLAY_CONTROL) |=
277 *(vu_long *) (SM501_MMIO_BASE +
278 SM501_PANEL_DISPLAY_CONTROL) |=
281 } else if (strncmp (argv[2], "off", 3) == 0) {
282 *(vu_long *) (SM501_MMIO_BASE +
283 SM501_PANEL_DISPLAY_CONTROL) &=
286 *(vu_long *) (SM501_MMIO_BASE +
287 SM501_PANEL_DISPLAY_CONTROL) &=
292 #ifdef CONFIG_BC3450_CRT
293 else if (strncmp (argv[1], "crt", 3) == 0) {
294 /* enables/disables the crt output (debug only) */
295 if (strncmp (argv[2], "on", 2) == 0) {
296 *(vu_long *) (SM501_MMIO_BASE +
297 SM501_CRT_DISPLAY_CONTROL) |=
298 (SM501_CDC_TE | SM501_CDC_E);
299 *(vu_long *) (SM501_MMIO_BASE +
300 SM501_CRT_DISPLAY_CONTROL) &=
303 } else if (strncmp (argv[2], "off", 3) == 0) {
304 *(vu_long *) (SM501_MMIO_BASE +
305 SM501_CRT_DISPLAY_CONTROL) &=
306 ~(SM501_CDC_TE | SM501_CDC_E);
307 *(vu_long *) (SM501_MMIO_BASE +
308 SM501_CRT_DISPLAY_CONTROL) |=
313 #endif /* CONFIG_BC3450_CRT */
314 printf ("Usage:%s\n", cmdtp->help);
318 U_BOOT_CMD (fp, 3, 1, cmd_fp,
319 "front panes access functions",
322 " - turns the CCFL backlight of the display on/off\n"
323 "fp <on/off>\n" " - turns the whole display on/off"
324 #ifdef CONFIG_BC3450_CRT
327 " - enables/disables the crt output (debug only)"
328 #endif /* CONFIG_BC3450_CRT */
332 * temp - DS1620 thermometer
334 /* GERSYS BC3450 specific functions */
335 static inline void bc_ds1620_set_clk (int clk)
338 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |=
341 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &=
345 static inline void bc_ds1620_set_data (int dat)
348 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |=
351 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &=
355 static inline int bc_ds1620_get_data (void)
359 rc = *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW);
366 static inline void bc_ds1620_set_data_dir (int dir)
369 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) &= ~DS1620_DQ;
371 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) |= DS1620_DQ;
374 static inline void bc_ds1620_set_reset (int res)
377 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_RES;
379 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &= ~DS1620_RES;
382 /* hardware independent functions */
383 static void ds1620_send_bits (int nr, int value)
387 for (i = 0; i < nr; i++) {
388 bc_ds1620_set_data (value & 1);
389 bc_ds1620_set_clk (0);
391 bc_ds1620_set_clk (1);
398 static unsigned int ds1620_recv_bits (int nr)
400 unsigned int value = 0, mask = 1;
403 bc_ds1620_set_data (0);
405 for (i = 0; i < nr; i++) {
406 bc_ds1620_set_clk (0);
409 if (bc_ds1620_get_data ())
414 bc_ds1620_set_clk (1);
421 static void ds1620_out (int cmd, int bits, int value)
423 bc_ds1620_set_clk (1);
424 bc_ds1620_set_data_dir (0);
426 bc_ds1620_set_reset (0);
428 bc_ds1620_set_reset (1);
432 ds1620_send_bits (8, cmd);
434 ds1620_send_bits (bits, value);
439 bc_ds1620_set_data_dir (1);
440 bc_ds1620_set_reset (0);
441 bc_ds1620_set_clk (0);
446 static unsigned int ds1620_in (int cmd, int bits)
450 bc_ds1620_set_clk (1);
451 bc_ds1620_set_data_dir (0);
453 bc_ds1620_set_reset (0);
455 bc_ds1620_set_reset (1);
459 ds1620_send_bits (8, cmd);
461 bc_ds1620_set_data_dir (1);
462 value = ds1620_recv_bits (bits);
465 bc_ds1620_set_data_dir (1);
466 bc_ds1620_set_reset (0);
467 bc_ds1620_set_clk (0);
472 static int cvt_9_to_int (unsigned int val)
480 /* set thermostate thresholds */
481 static void ds1620_write_state (struct therm *therm)
483 ds1620_out (THERM_WRITE_TL, 9, therm->lo);
484 ds1620_out (THERM_WRITE_TH, 9, therm->hi);
485 ds1620_out (THERM_START_CONVERT, 0, 0);
488 static int cmd_temp (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
495 /* print temperature */
497 i = cvt_9_to_int (ds1620_in (THERM_READ_TEMP, 9));
498 printf ("%d.%d C\n", i >> 1, i & 1 ? 5 : 0);
502 /* set to default operation */
503 if (strncmp (argv[1], "set", 3) == 0) {
504 if (strncmp (argv[2], "default", 3) == 0) {
509 ds1620_write_state (&therm);
510 ds1620_out (THERM_WRITE_CONFIG, 8, CONFIG_SYS_STANDALONE);
515 printf ("Usage:%s\n", cmdtp->help);
519 U_BOOT_CMD (temp, 3, 1, cmd_temp,
520 "print current temperature",
521 "\n" "temp\n" " - print current temperature");
523 #ifdef CONFIG_BC3450_CAN
525 * Initialise CAN interface
527 * return 1 on CAN initialization failure
528 * return 0 if no failure
532 static int init_done = 0;
534 struct mpc5xxx_mscan *can1 =
535 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0900);
536 struct mpc5xxx_mscan *can2 =
537 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0980);
539 /* GPIO configuration of the CAN pins is done in BC3450.h */
543 can1->canctl1 |= 0x80; /* CAN enable */
547 can1->canctl0 |= 0x02; /* sleep mode */
548 /* wait until sleep mode reached */
549 while (!(can1->canctl1 & 0x02)) {
553 printf ("%s: CAN1 initialize error, "
554 "can not enter sleep mode!\n",
560 can1->canctl0 = 0x01; /* enter init mode */
561 /* wait until init mode reached */
562 while (!(can1->canctl1 & 0x01)) {
566 printf ("%s: CAN1 initialize error, "
567 "can not enter init mode!\n",
572 can1->canctl1 = 0x80;
573 can1->canctl1 |= 0x40;
574 can1->canbtr0 = 0x0F;
575 can1->canbtr1 = 0x7F;
576 can1->canidac &= ~(0x30);
577 can1->canidar1 = 0x00;
578 can1->canidar3 = 0x00;
579 can1->canidar5 = 0x00;
580 can1->canidar7 = 0x00;
581 can1->canidmr0 = 0xFF;
582 can1->canidmr1 = 0xFF;
583 can1->canidmr2 = 0xFF;
584 can1->canidmr3 = 0xFF;
585 can1->canidmr4 = 0xFF;
586 can1->canidmr5 = 0xFF;
587 can1->canidmr6 = 0xFF;
588 can1->canidmr7 = 0xFF;
591 can1->canctl0 &= ~(0x01); /* leave init mode */
592 can1->canctl0 &= ~(0x02);
593 /* wait until init and sleep mode left */
594 while ((can1->canctl1 & 0x01) || (can1->canctl1 & 0x02)) {
598 printf ("%s: CAN1 initialize error, "
599 "can not leave init/sleep mode!\n",
606 can2->canctl1 |= 0x80; /* CAN enable */
610 can2->canctl0 |= 0x02; /* sleep mode */
611 /* wait until sleep mode reached */
612 while (!(can2->canctl1 & 0x02)) {
616 printf ("%s: CAN2 initialize error, "
617 "can not enter sleep mode!\n",
623 can2->canctl0 = 0x01; /* enter init mode */
624 /* wait until init mode reached */
625 while (!(can2->canctl1 & 0x01)) {
629 printf ("%s: CAN2 initialize error, "
630 "can not enter init mode!\n",
635 can2->canctl1 = 0x80;
636 can2->canctl1 |= 0x40;
637 can2->canbtr0 = 0x0F;
638 can2->canbtr1 = 0x7F;
639 can2->canidac &= ~(0x30);
640 can2->canidar1 = 0x00;
641 can2->canidar3 = 0x00;
642 can2->canidar5 = 0x00;
643 can2->canidar7 = 0x00;
644 can2->canidmr0 = 0xFF;
645 can2->canidmr1 = 0xFF;
646 can2->canidmr2 = 0xFF;
647 can2->canidmr3 = 0xFF;
648 can2->canidmr4 = 0xFF;
649 can2->canidmr5 = 0xFF;
650 can2->canidmr6 = 0xFF;
651 can2->canidmr7 = 0xFF;
652 can2->canctl0 &= ~(0x01); /* leave init mode */
653 can2->canctl0 &= ~(0x02);
656 /* wait until init mode left */
657 while ((can2->canctl1 & 0x01) || (can2->canctl1 & 0x02)) {
661 printf ("%s: CAN2 initialize error, "
662 "can not leave init/sleep mode!\n",
674 * by sending message between CAN1 and CAN2
676 * return 1 on CAN failure
677 * return 0 if no failure
679 int do_can (char * const argv[])
682 struct mpc5xxx_mscan *can1 =
683 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0900);
684 struct mpc5xxx_mscan *can2 =
685 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0980);
687 /* send a message on CAN1 */
688 can1->cantbsel = 0x01;
689 can1->cantxfg.idr[0] = 0x55;
690 can1->cantxfg.idr[1] = 0x00;
691 can1->cantxfg.idr[1] &= ~0x8;
692 can1->cantxfg.idr[1] &= ~0x10;
693 can1->cantxfg.dsr[0] = 0xCC;
694 can1->cantxfg.dlr = 1;
695 can1->cantxfg.tbpr = 0;
696 can1->cantflg = 0x01;
699 while ((can1->cantflg & 0x01) == 0) {
702 printf ("%s: CAN1 send timeout, "
703 "can not send message!\n", __FUNCTION__);
711 while (!(can2->canrflg & 0x01)) {
714 printf ("%s: CAN2 receive timeout, "
715 "no message received!\n", __FUNCTION__);
721 if (can2->canrxfg.dsr[0] != 0xCC) {
722 printf ("%s: CAN2 receive error, "
723 "data mismatch!\n", __FUNCTION__);
727 /* send a message on CAN2 */
728 can2->cantbsel = 0x01;
729 can2->cantxfg.idr[0] = 0x55;
730 can2->cantxfg.idr[1] = 0x00;
731 can2->cantxfg.idr[1] &= ~0x8;
732 can2->cantxfg.idr[1] &= ~0x10;
733 can2->cantxfg.dsr[0] = 0xCC;
734 can2->cantxfg.dlr = 1;
735 can2->cantxfg.tbpr = 0;
736 can2->cantflg = 0x01;
739 while ((can2->cantflg & 0x01) == 0) {
742 printf ("%s: CAN2 send error, "
743 "can not send message!\n", __FUNCTION__);
751 while (!(can1->canrflg & 0x01)) {
754 printf ("%s: CAN1 receive timeout, "
755 "no message received!\n", __FUNCTION__);
761 if (can1->canrxfg.dsr[0] != 0xCC) {
762 printf ("%s: CAN1 receive error 0x%02x\n",
763 __FUNCTION__, (can1->canrxfg.dsr[0]));
769 #endif /* CONFIG_BC3450_CAN */
772 * test - BC3450 HW test routines
774 int cmd_test (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
776 #ifdef CONFIG_BC3450_CAN
780 #endif /* CONFIG_BC3450_CAN */
785 printf ("Usage:%s\n", cmdtp->help);
789 if (strncmp (argv[1], "unit-off", 8) == 0) {
790 printf ("waiting 2 seconds...\n");
792 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &=
796 #ifdef CONFIG_BC3450_CAN
797 else if (strncmp (argv[1], "can", 2) == 0) {
798 rcode = do_can (argv);
799 if (simple_strtoul (argv[2], NULL, 10) == 2) {
807 #endif /* CONFIG_BC3450_CAN */
809 printf ("Usage:%s\n", cmdtp->help);
813 U_BOOT_CMD (test, 2, 1, cmd_test, "unit test routines", "\n"
814 #ifdef CONFIG_BC3450_CAN
816 " - connect CAN1 (X8) with CAN2 (X9) for this test\n"
817 #endif /* CONFIG_BC3450_CAN */
819 " - turns off the BC3450 unit\n"
820 " WARNING: Unsaved environment variables will be lost!"