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_1SHOT 1
49 #define CONFIG_SYS_STANDALONE 0
59 #define SM501_GPIO_CTRL_LOW 0x00000008UL /* gpio pins 0..31 */
60 #define SM501_GPIO_CTRL_HIGH 0x0000000CUL /* gpio pins 32..63 */
61 #define SM501_POWER_MODE0_GATE 0x00000040UL
62 #define SM501_POWER_MODE1_GATE 0x00000048UL
63 #define POWER_MODE_GATE_GPIO_PWM_I2C 0x00000040UL
64 #define SM501_GPIO_DATA_LOW 0x00010000UL
65 #define SM501_GPIO_DATA_HIGH 0x00010004UL
66 #define SM501_GPIO_DATA_DIR_LOW 0x00010008UL
67 #define SM501_GPIO_DATA_DIR_HIGH 0x0001000CUL
68 #define SM501_PANEL_DISPLAY_CONTROL 0x00080000UL
69 #define SM501_CRT_DISPLAY_CONTROL 0x00080200UL
71 /* SM501 CRT Display Control Bits */
72 #define SM501_CDC_SEL (1 << 9)
73 #define SM501_CDC_TE (1 << 8)
74 #define SM501_CDC_E (1 << 2)
76 /* SM501 Panel Display Control Bits */
77 #define SM501_PDC_FPEN (1 << 27)
78 #define SM501_PDC_BIAS (1 << 26)
79 #define SM501_PDC_DATA (1 << 25)
80 #define SM501_PDC_VDDEN (1 << 24)
82 /* SM501 GPIO Data LOW Bits */
83 #define SM501_GPIO24 0x01000000
84 #define SM501_GPIO25 0x02000000
85 #define SM501_GPIO26 0x04000000
86 #define SM501_GPIO27 0x08000000
87 #define SM501_GPIO28 0x10000000
88 #define SM501_GPIO29 0x20000000
89 #define SM501_GPIO30 0x40000000
90 #define SM501_GPIO31 0x80000000
92 /* SM501 GPIO Data HIGH Bits */
93 #define SM501_GPIO46 0x00004000
94 #define SM501_GPIO47 0x00008000
95 #define SM501_GPIO48 0x00010000
96 #define SM501_GPIO49 0x00020000
97 #define SM501_GPIO50 0x00040000
98 #define SM501_GPIO51 0x00080000
100 /* BC3450 GPIOs @ SM501 Data LOW */
101 #define DIP (SM501_GPIO24 | SM501_GPIO25 | SM501_GPIO26 | SM501_GPIO27)
102 #define DS1620_DQ SM501_GPIO29 /* I/O */
103 #define DS1620_CLK SM501_GPIO30 /* High active O/P */
104 #define DS1620_RES SM501_GPIO31 /* Low active O/P */
105 /* BC3450 GPIOs @ SM501 Data HIGH */
106 #define BUZZER SM501_GPIO47 /* Low active O/P */
107 #define DS1620_TLOW SM501_GPIO48 /* High active I/P */
108 #define PWR_OFF SM501_GPIO49 /* Low active O/P */
109 #define FP_DATA_TRI SM501_GPIO50 /* High active O/P */
113 * Initialise GPIO on SM501
115 * This function may be called from several other functions.
116 * Yet, the initialisation sequence is executed only the first
117 * time the function is called.
119 int sm501_gpio_init (void)
121 static int init_done = 0;
124 debug("sm501_gpio_init: nothing to be done.\n");
128 /* enable SM501 GPIO control (in both power modes) */
129 *(vu_long *) (SM501_MMIO_BASE + SM501_POWER_MODE0_GATE) |=
130 POWER_MODE_GATE_GPIO_PWM_I2C;
131 *(vu_long *) (SM501_MMIO_BASE + SM501_POWER_MODE1_GATE) |=
132 POWER_MODE_GATE_GPIO_PWM_I2C;
134 /* set up default O/Ps */
135 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &=
136 ~(DS1620_RES | DS1620_CLK);
137 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_DQ;
138 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &=
140 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) |=
143 /* configure directions for SM501 GPIO pins */
144 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_CTRL_LOW) &= ~(0xFF << 24);
145 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_CTRL_HIGH) &=
147 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) &=
149 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) |=
150 (DS1620_RES | DS1620_CLK);
151 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_HIGH) &=
153 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_HIGH) |=
154 (PWR_OFF | BUZZER | FP_DATA_TRI);
157 debug("sm501_gpio_init: done.\n");
164 * dip - read Config Inputs
166 * read and prints the dip switch
167 * and/or external config inputs (4bits) 0...0x0F
169 int cmd_dip (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
175 /* read dip switch */
176 rc = *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW);
179 rc = (int) (rc >> 24);
181 /* plausibility check */
185 printf ("0x%lx\n", rc);
189 U_BOOT_CMD (dip, 1, 1, cmd_dip,
190 "read dip switch and config inputs",
192 " - prints the state of the dip switch and/or\n"
193 " external configuration inputs as hex value.\n"
194 " - \"Config 1\" is the LSB");
198 * buz - turns Buzzer on/off
200 #ifdef CONFIG_BC3450_BUZZER
201 static int cmd_buz (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
204 printf ("Usage:\nspecify one argument: \"on\" or \"off\"\n");
210 if (strncmp (argv[1], "on", 2) == 0) {
211 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &=
214 } else if (strncmp (argv[1], "off", 3) == 0) {
215 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) |=
219 printf ("Usage:\nspecify one argument: \"on\" or \"off\"\n");
223 U_BOOT_CMD (buz, 2, 1, cmd_buz,
224 "turns buzzer on/off",
225 "\n" "buz <on/off>\n" " - turns the buzzer on or off");
226 #endif /* CONFIG_BC3450_BUZZER */
230 * fp - front panel commands
232 static int cmd_fp (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
236 if (strncmp (argv[1], "on", 2) == 0) {
237 /* turn on VDD first */
238 *(vu_long *) (SM501_MMIO_BASE +
239 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_VDDEN;
241 /* then put data on */
242 *(vu_long *) (SM501_MMIO_BASE +
243 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_DATA;
244 /* wait some time and enable backlight */
246 *(vu_long *) (SM501_MMIO_BASE +
247 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_BIAS;
249 *(vu_long *) (SM501_MMIO_BASE +
250 SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_FPEN;
252 } else if (strncmp (argv[1], "off", 3) == 0) {
253 /* turn off the backlight first */
254 *(vu_long *) (SM501_MMIO_BASE +
255 SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_FPEN;
257 *(vu_long *) (SM501_MMIO_BASE +
258 SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_BIAS;
260 /* wait some time, then remove data */
261 *(vu_long *) (SM501_MMIO_BASE +
262 SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_DATA;
264 /* and remove VDD last */
265 *(vu_long *) (SM501_MMIO_BASE +
266 SM501_PANEL_DISPLAY_CONTROL) &=
269 } else if (strncmp (argv[1], "bl", 2) == 0) {
270 /* turn on/off backlight only */
271 if (strncmp (argv[2], "on", 2) == 0) {
272 *(vu_long *) (SM501_MMIO_BASE +
273 SM501_PANEL_DISPLAY_CONTROL) |=
276 *(vu_long *) (SM501_MMIO_BASE +
277 SM501_PANEL_DISPLAY_CONTROL) |=
280 } else if (strncmp (argv[2], "off", 3) == 0) {
281 *(vu_long *) (SM501_MMIO_BASE +
282 SM501_PANEL_DISPLAY_CONTROL) &=
285 *(vu_long *) (SM501_MMIO_BASE +
286 SM501_PANEL_DISPLAY_CONTROL) &=
291 #ifdef CONFIG_BC3450_CRT
292 else if (strncmp (argv[1], "crt", 3) == 0) {
293 /* enables/disables the crt output (debug only) */
294 if (strncmp (argv[2], "on", 2) == 0) {
295 *(vu_long *) (SM501_MMIO_BASE +
296 SM501_CRT_DISPLAY_CONTROL) |=
297 (SM501_CDC_TE | SM501_CDC_E);
298 *(vu_long *) (SM501_MMIO_BASE +
299 SM501_CRT_DISPLAY_CONTROL) &=
302 } else if (strncmp (argv[2], "off", 3) == 0) {
303 *(vu_long *) (SM501_MMIO_BASE +
304 SM501_CRT_DISPLAY_CONTROL) &=
305 ~(SM501_CDC_TE | SM501_CDC_E);
306 *(vu_long *) (SM501_MMIO_BASE +
307 SM501_CRT_DISPLAY_CONTROL) |=
312 #endif /* CONFIG_BC3450_CRT */
313 printf ("Usage:%s\n", cmdtp->help);
317 U_BOOT_CMD (fp, 3, 1, cmd_fp,
318 "front panes access functions",
321 " - turns the CCFL backlight of the display on/off\n"
322 "fp <on/off>\n" " - turns the whole display on/off"
323 #ifdef CONFIG_BC3450_CRT
326 " - enables/disables the crt output (debug only)"
327 #endif /* CONFIG_BC3450_CRT */
331 * temp - DS1620 thermometer
333 /* GERSYS BC3450 specific functions */
334 static inline void bc_ds1620_set_clk (int clk)
337 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |=
340 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &=
344 static inline void bc_ds1620_set_data (int dat)
347 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |=
350 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &=
354 static inline int bc_ds1620_get_data (void)
358 rc = *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW);
365 static inline void bc_ds1620_set_data_dir (int dir)
368 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) &= ~DS1620_DQ;
370 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) |= DS1620_DQ;
373 static inline void bc_ds1620_set_reset (int res)
376 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_RES;
378 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &= ~DS1620_RES;
381 /* hardware independent functions */
382 static void ds1620_send_bits (int nr, int value)
386 for (i = 0; i < nr; i++) {
387 bc_ds1620_set_data (value & 1);
388 bc_ds1620_set_clk (0);
390 bc_ds1620_set_clk (1);
397 static unsigned int ds1620_recv_bits (int nr)
399 unsigned int value = 0, mask = 1;
402 bc_ds1620_set_data (0);
404 for (i = 0; i < nr; i++) {
405 bc_ds1620_set_clk (0);
408 if (bc_ds1620_get_data ())
413 bc_ds1620_set_clk (1);
420 static void ds1620_out (int cmd, int bits, int value)
422 bc_ds1620_set_clk (1);
423 bc_ds1620_set_data_dir (0);
425 bc_ds1620_set_reset (0);
427 bc_ds1620_set_reset (1);
431 ds1620_send_bits (8, cmd);
433 ds1620_send_bits (bits, value);
438 bc_ds1620_set_data_dir (1);
439 bc_ds1620_set_reset (0);
440 bc_ds1620_set_clk (0);
445 static unsigned int ds1620_in (int cmd, int bits)
449 bc_ds1620_set_clk (1);
450 bc_ds1620_set_data_dir (0);
452 bc_ds1620_set_reset (0);
454 bc_ds1620_set_reset (1);
458 ds1620_send_bits (8, cmd);
460 bc_ds1620_set_data_dir (1);
461 value = ds1620_recv_bits (bits);
464 bc_ds1620_set_data_dir (1);
465 bc_ds1620_set_reset (0);
466 bc_ds1620_set_clk (0);
471 static int cvt_9_to_int (unsigned int val)
479 /* set thermostate thresholds */
480 static void ds1620_write_state (struct therm *therm)
482 ds1620_out (THERM_WRITE_TL, 9, therm->lo);
483 ds1620_out (THERM_WRITE_TH, 9, therm->hi);
484 ds1620_out (THERM_START_CONVERT, 0, 0);
487 static int cmd_temp (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
494 /* print temperature */
496 i = cvt_9_to_int (ds1620_in (THERM_READ_TEMP, 9));
497 printf ("%d.%d C\n", i >> 1, i & 1 ? 5 : 0);
501 /* set to default operation */
502 if (strncmp (argv[1], "set", 3) == 0) {
503 if (strncmp (argv[2], "default", 3) == 0) {
508 ds1620_write_state (&therm);
509 ds1620_out (THERM_WRITE_CONFIG, 8, CONFIG_SYS_STANDALONE);
514 printf ("Usage:%s\n", cmdtp->help);
518 U_BOOT_CMD (temp, 3, 1, cmd_temp,
519 "print current temperature",
520 "\n" "temp\n" " - print current temperature");
522 #ifdef CONFIG_BC3450_CAN
524 * Initialise CAN interface
526 * return 1 on CAN initialization failure
527 * return 0 if no failure
531 static int init_done = 0;
533 struct mpc5xxx_mscan *can1 =
534 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0900);
535 struct mpc5xxx_mscan *can2 =
536 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0980);
538 /* GPIO configuration of the CAN pins is done in BC3450.h */
542 can1->canctl1 |= 0x80; /* CAN enable */
546 can1->canctl0 |= 0x02; /* sleep mode */
547 /* wait until sleep mode reached */
548 while (!(can1->canctl1 & 0x02)) {
552 printf ("%s: CAN1 initialize error, "
553 "can not enter sleep mode!\n",
559 can1->canctl0 = 0x01; /* enter init mode */
560 /* wait until init mode reached */
561 while (!(can1->canctl1 & 0x01)) {
565 printf ("%s: CAN1 initialize error, "
566 "can not enter init mode!\n",
571 can1->canctl1 = 0x80;
572 can1->canctl1 |= 0x40;
573 can1->canbtr0 = 0x0F;
574 can1->canbtr1 = 0x7F;
575 can1->canidac &= ~(0x30);
576 can1->canidar1 = 0x00;
577 can1->canidar3 = 0x00;
578 can1->canidar5 = 0x00;
579 can1->canidar7 = 0x00;
580 can1->canidmr0 = 0xFF;
581 can1->canidmr1 = 0xFF;
582 can1->canidmr2 = 0xFF;
583 can1->canidmr3 = 0xFF;
584 can1->canidmr4 = 0xFF;
585 can1->canidmr5 = 0xFF;
586 can1->canidmr6 = 0xFF;
587 can1->canidmr7 = 0xFF;
590 can1->canctl0 &= ~(0x01); /* leave init mode */
591 can1->canctl0 &= ~(0x02);
592 /* wait until init and sleep mode left */
593 while ((can1->canctl1 & 0x01) || (can1->canctl1 & 0x02)) {
597 printf ("%s: CAN1 initialize error, "
598 "can not leave init/sleep mode!\n",
605 can2->canctl1 |= 0x80; /* CAN enable */
609 can2->canctl0 |= 0x02; /* sleep mode */
610 /* wait until sleep mode reached */
611 while (!(can2->canctl1 & 0x02)) {
615 printf ("%s: CAN2 initialize error, "
616 "can not enter sleep mode!\n",
622 can2->canctl0 = 0x01; /* enter init mode */
623 /* wait until init mode reached */
624 while (!(can2->canctl1 & 0x01)) {
628 printf ("%s: CAN2 initialize error, "
629 "can not enter init mode!\n",
634 can2->canctl1 = 0x80;
635 can2->canctl1 |= 0x40;
636 can2->canbtr0 = 0x0F;
637 can2->canbtr1 = 0x7F;
638 can2->canidac &= ~(0x30);
639 can2->canidar1 = 0x00;
640 can2->canidar3 = 0x00;
641 can2->canidar5 = 0x00;
642 can2->canidar7 = 0x00;
643 can2->canidmr0 = 0xFF;
644 can2->canidmr1 = 0xFF;
645 can2->canidmr2 = 0xFF;
646 can2->canidmr3 = 0xFF;
647 can2->canidmr4 = 0xFF;
648 can2->canidmr5 = 0xFF;
649 can2->canidmr6 = 0xFF;
650 can2->canidmr7 = 0xFF;
651 can2->canctl0 &= ~(0x01); /* leave init mode */
652 can2->canctl0 &= ~(0x02);
655 /* wait until init mode left */
656 while ((can2->canctl1 & 0x01) || (can2->canctl1 & 0x02)) {
660 printf ("%s: CAN2 initialize error, "
661 "can not leave init/sleep mode!\n",
673 * by sending message between CAN1 and CAN2
675 * return 1 on CAN failure
676 * return 0 if no failure
678 int do_can (char * const argv[])
681 struct mpc5xxx_mscan *can1 =
682 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0900);
683 struct mpc5xxx_mscan *can2 =
684 (struct mpc5xxx_mscan *) (CONFIG_SYS_MBAR + 0x0980);
686 /* send a message on CAN1 */
687 can1->cantbsel = 0x01;
688 can1->cantxfg.idr[0] = 0x55;
689 can1->cantxfg.idr[1] = 0x00;
690 can1->cantxfg.idr[1] &= ~0x8;
691 can1->cantxfg.idr[1] &= ~0x10;
692 can1->cantxfg.dsr[0] = 0xCC;
693 can1->cantxfg.dlr = 1;
694 can1->cantxfg.tbpr = 0;
695 can1->cantflg = 0x01;
698 while ((can1->cantflg & 0x01) == 0) {
701 printf ("%s: CAN1 send timeout, "
702 "can not send message!\n", __FUNCTION__);
710 while (!(can2->canrflg & 0x01)) {
713 printf ("%s: CAN2 receive timeout, "
714 "no message received!\n", __FUNCTION__);
720 if (can2->canrxfg.dsr[0] != 0xCC) {
721 printf ("%s: CAN2 receive error, "
722 "data mismatch!\n", __FUNCTION__);
726 /* send a message on CAN2 */
727 can2->cantbsel = 0x01;
728 can2->cantxfg.idr[0] = 0x55;
729 can2->cantxfg.idr[1] = 0x00;
730 can2->cantxfg.idr[1] &= ~0x8;
731 can2->cantxfg.idr[1] &= ~0x10;
732 can2->cantxfg.dsr[0] = 0xCC;
733 can2->cantxfg.dlr = 1;
734 can2->cantxfg.tbpr = 0;
735 can2->cantflg = 0x01;
738 while ((can2->cantflg & 0x01) == 0) {
741 printf ("%s: CAN2 send error, "
742 "can not send message!\n", __FUNCTION__);
750 while (!(can1->canrflg & 0x01)) {
753 printf ("%s: CAN1 receive timeout, "
754 "no message received!\n", __FUNCTION__);
760 if (can1->canrxfg.dsr[0] != 0xCC) {
761 printf ("%s: CAN1 receive error 0x%02x\n",
762 __FUNCTION__, (can1->canrxfg.dsr[0]));
768 #endif /* CONFIG_BC3450_CAN */
771 * test - BC3450 HW test routines
773 int cmd_test (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
775 #ifdef CONFIG_BC3450_CAN
779 #endif /* CONFIG_BC3450_CAN */
784 printf ("Usage:%s\n", cmdtp->help);
788 if (strncmp (argv[1], "unit-off", 8) == 0) {
789 printf ("waiting 2 seconds...\n");
791 *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &=
795 #ifdef CONFIG_BC3450_CAN
796 else if (strncmp (argv[1], "can", 2) == 0) {
797 rcode = do_can (argv);
798 if (simple_strtoul (argv[2], NULL, 10) == 2) {
806 #endif /* CONFIG_BC3450_CAN */
808 printf ("Usage:%s\n", cmdtp->help);
812 U_BOOT_CMD (test, 2, 1, cmd_test, "unit test routines", "\n"
813 #ifdef CONFIG_BC3450_CAN
815 " - connect CAN1 (X8) with CAN2 (X9) for this test\n"
816 #endif /* CONFIG_BC3450_CAN */
818 " - turns off the BC3450 unit\n"
819 " WARNING: Unsaved environment variables will be lost!"