]> git.ipfire.org Git - people/ms/u-boot.git/blame - board/esd/cpci405/cpci405.c
Add GPL-2.0+ SPDX-License-Identifier to source files
[people/ms/u-boot.git] / board / esd / cpci405 / cpci405.c
CommitLineData
c609719b 1/*
6f4474e8 2 * (C) Copyright 2001-2003
c609719b
WD
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
4 *
1a459660 5 * SPDX-License-Identifier: GPL-2.0+
c609719b 6 */
c609719b 7#include <common.h>
600fe46f
MF
8#include <libfdt.h>
9#include <fdt_support.h>
c609719b 10#include <asm/processor.h>
6f35c531 11#include <asm/io.h>
c609719b 12#include <command.h>
c609719b 13#include <malloc.h>
87663b1c 14#include <net.h>
6f35c531 15#include <pci.h>
c609719b 16
d87080b7
WD
17DECLARE_GLOBAL_DATA_PTR;
18
f6a1f490
MF
19extern void __ft_board_setup(void *blob, bd_t *bd);
20
21#undef FPGA_DEBUG
c609719b
WD
22
23/* fpga configuration data - generated by bin2cc */
24const unsigned char fpgadata[] =
25{
f6a1f490
MF
26#if defined(CONFIG_CPCI405_VER2)
27# if defined(CONFIG_CPCI405AB)
d4629c8c
SR
28# include "fpgadata_cpci405ab.c"
29# else
30# include "fpgadata_cpci4052.c"
31# endif
c609719b
WD
32#else
33# include "fpgadata_cpci405.c"
34#endif
35};
36
37/*
38 * include common fpga code (for esd boards)
39 */
40#include "../common/fpga.c"
87663b1c
SR
41#include "../common/auto_update.h"
42
f6a1f490 43#if defined(CONFIG_CPCI405AB)
87663b1c
SR
44au_image_t au_image[] = {
45 {"cpci405ab/preinst.img", 0, -1, AU_SCRIPT},
46 {"cpci405ab/pImage", 0xffc00000, 0x000c0000, AU_NOR},
47 {"cpci405ab/pImage.initrd", 0xffcc0000, 0x00300000, AU_NOR},
48 {"cpci405ab/u-boot.img", 0xfffc0000, 0x00040000, AU_FIRMWARE},
49 {"cpci405ab/postinst.img", 0, 0, AU_SCRIPT},
50};
51#else
f6a1f490 52#if defined(CONFIG_CPCI405_VER2)
87663b1c
SR
53au_image_t au_image[] = {
54 {"cpci4052/preinst.img", 0, -1, AU_SCRIPT},
55 {"cpci4052/pImage", 0xffc00000, 0x000c0000, AU_NOR},
56 {"cpci4052/pImage.initrd", 0xffcc0000, 0x00300000, AU_NOR},
57 {"cpci4052/u-boot.img", 0xfffc0000, 0x00040000, AU_FIRMWARE},
58 {"cpci4052/postinst.img", 0, 0, AU_SCRIPT},
59};
60#else
61au_image_t au_image[] = {
62 {"cpci405/preinst.img", 0, -1, AU_SCRIPT},
63 {"cpci405/pImage", 0xffc00000, 0x000c0000, AU_NOR},
64 {"cpci405/pImage.initrd", 0xffcc0000, 0x00310000, AU_NOR},
65 {"cpci405/u-boot.img", 0xfffd0000, 0x00030000, AU_FIRMWARE},
66 {"cpci405/postinst.img", 0, 0, AU_SCRIPT},
67};
68#endif
69#endif
70
71int N_AU_IMAGES = (sizeof(au_image) / sizeof(au_image[0]));
72
c609719b 73/* Prototypes */
6f4474e8 74int cpci405_version(void);
87663b1c 75void lxt971_no_sleep(void);
c609719b 76
f6a1f490 77int board_early_init_f(void)
c609719b
WD
78{
79#ifndef CONFIG_CPCI405_VER2
80 int index, len, i;
81 int status;
82#endif
83
84#ifdef FPGA_DEBUG
c609719b 85 /* set up serial port with default baudrate */
f6a1f490 86 (void)get_clocks();
c609719b 87 gd->baudrate = CONFIG_BAUDRATE;
f6a1f490 88 serial_init();
c609719b
WD
89 console_init_f();
90#endif
91
92 /*
f6a1f490
MF
93 * First pull fpga-prg pin low,
94 * to disable fpga logic (on version 2 board)
c609719b 95 */
049216f0
MF
96 out_be32((void *)GPIO0_ODR, 0x00000000); /* no open drain pins */
97 out_be32((void *)GPIO0_TCR, CONFIG_SYS_FPGA_PRG); /* setup for output */
98 out_be32((void *)GPIO0_OR, CONFIG_SYS_FPGA_PRG); /* set output pins to high */
99 out_be32((void *)GPIO0_OR, 0); /* pull prg low */
c609719b
WD
100
101 /*
102 * Boot onboard FPGA
103 */
104#ifndef CONFIG_CPCI405_VER2
6f4474e8 105 if (cpci405_version() == 1) {
c609719b
WD
106 status = fpga_boot((unsigned char *)fpgadata, sizeof(fpgadata));
107 if (status != 0) {
108 /* booting FPGA failed */
109#ifndef FPGA_DEBUG
c609719b 110 /* set up serial port with default baudrate */
f6a1f490 111 (void)get_clocks();
c609719b 112 gd->baudrate = CONFIG_BAUDRATE;
f6a1f490 113 serial_init();
c609719b
WD
114 console_init_f();
115#endif
116 printf("\nFPGA: Booting failed ");
117 switch (status) {
118 case ERROR_FPGA_PRG_INIT_LOW:
f6a1f490
MF
119 printf("(Timeout: INIT not low after "
120 "asserting PROGRAM*)\n ");
c609719b
WD
121 break;
122 case ERROR_FPGA_PRG_INIT_HIGH:
f6a1f490
MF
123 printf("(Timeout: INIT not high after "
124 "deasserting PROGRAM*)\n ");
c609719b
WD
125 break;
126 case ERROR_FPGA_PRG_DONE:
f6a1f490
MF
127 printf("(Timeout: DONE not high after "
128 "programming FPGA)\n ");
c609719b
WD
129 break;
130 }
131
132 /* display infos on fpgaimage */
133 index = 15;
f6a1f490 134 for (i = 0; i < 4; i++) {
c609719b 135 len = fpgadata[index];
f6a1f490
MF
136 printf("FPGA: %s\n", &(fpgadata[index + 1]));
137 index += len + 3;
c609719b 138 }
f6a1f490 139 putc('\n');
c609719b 140 /* delayed reboot */
f6a1f490 141 for (i = 20; i > 0; i--) {
c609719b 142 printf("Rebooting in %2d seconds \r",i);
f6a1f490 143 for (index = 0; index < 1000; index++)
c609719b
WD
144 udelay(1000);
145 }
f6a1f490 146 putc('\n');
c609719b
WD
147 do_reset(NULL, 0, 0, NULL);
148 }
149 }
150#endif /* !CONFIG_CPCI405_VER2 */
151
152 /*
153 * IRQ 0-15 405GP internally generated; active high; level sensitive
154 * IRQ 16 405GP internally generated; active low; level sensitive
155 * IRQ 17-24 RESERVED
156 * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
f6a1f490 157 * IRQ 26 (EXT IRQ 1) CAN1 (+FPGA on CPCI4052); active low; level sens.
c609719b
WD
158 * IRQ 27 (EXT IRQ 2) PCI SLOT 0; active low; level sensitive
159 * IRQ 28 (EXT IRQ 3) PCI SLOT 1; active low; level sensitive
160 * IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
161 * IRQ 30 (EXT IRQ 5) PCI SLOT 3; active low; level sensitive
162 * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
163 */
952e7760
SR
164 mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
165 mtdcr(UIC0ER, 0x00000000); /* disable all ints */
166 mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
f6a1f490 167#if defined(CONFIG_CPCI405_6U)
6f4474e8 168 if (cpci405_version() == 3) {
952e7760 169 mtdcr(UIC0PR, 0xFFFFFF99); /* set int polarities */
6f4474e8 170 } else {
952e7760 171 mtdcr(UIC0PR, 0xFFFFFF81); /* set int polarities */
6f4474e8 172 }
6f35c531 173#else
952e7760 174 mtdcr(UIC0PR, 0xFFFFFF81); /* set int polarities */
6f35c531 175#endif
952e7760
SR
176 mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
177 mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,
f6a1f490 178 * INT0 highest priority */
952e7760 179 mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
c609719b
WD
180
181 return 0;
182}
183
c609719b
WD
184int ctermm2(void)
185{
f6a1f490 186#if defined(CONFIG_CPCI405_VER2)
4ef218f6 187 return 0; /* no, board is cpci405 */
c609719b 188#else
f6a1f490
MF
189 if ((in_8((void*)0xf0000400) == 0x00) &&
190 (in_8((void*)0xf0000401) == 0x01))
4ef218f6 191 return 0; /* no, board is cpci405 */
c609719b 192 else
4ef218f6 193 return -1; /* yes, board is cterm-m2 */
c609719b
WD
194#endif
195}
196
c609719b
WD
197int cpci405_host(void)
198{
d1c3b275 199 if (mfdcr(CPC0_PSR) & PSR_PCI_ARBIT_EN)
4ef218f6 200 return -1; /* yes, board is cpci405 host */
c609719b 201 else
4ef218f6 202 return 0; /* no, board is cpci405 adapter */
c609719b
WD
203}
204
6f4474e8 205int cpci405_version(void)
c609719b 206{
d1c3b275 207 unsigned long CPC0_CR0Reg;
c609719b
WD
208 unsigned long value;
209
210 /*
6f4474e8 211 * Setup GPIO pins (CS2/GPIO11 and CS3/GPIO12 as GPIO)
c609719b 212 */
d1c3b275
SR
213 CPC0_CR0Reg = mfdcr(CPC0_CR0);
214 mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x03000000);
6f35c531
MF
215 out_be32((void*)GPIO0_ODR, in_be32((void*)GPIO0_ODR) & ~0x00180000);
216 out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) & ~0x00180000);
f6a1f490
MF
217 udelay(1000); /* wait some time before reading input */
218 value = in_be32((void*)GPIO0_IR) & 0x00180000; /* get config bits */
c609719b
WD
219
220 /*
6f4474e8 221 * Restore GPIO settings
c609719b 222 */
d1c3b275 223 mtdcr(CPC0_CR0, CPC0_CR0Reg);
c609719b 224
6f4474e8
SR
225 switch (value) {
226 case 0x00180000:
227 /* CS2==1 && CS3==1 -> version 1 */
228 return 1;
229 case 0x00080000:
230 /* CS2==0 && CS3==1 -> version 2 */
231 return 2;
232 case 0x00100000:
6f35c531 233 /* CS2==1 && CS3==0 -> version 3 or 6U board */
6f4474e8
SR
234 return 3;
235 case 0x00000000:
236 /* CS2==0 && CS3==0 -> version 4 */
237 return 4;
238 default:
239 /* should not be reached! */
240 return 2;
241 }
c609719b
WD
242}
243
c609719b
WD
244int misc_init_r (void)
245{
d1c3b275 246 unsigned long CPC0_CR0Reg;
c609719b 247
87663b1c
SR
248 /* adjust flash start and offset */
249 gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
250 gd->bd->bi_flashoffset = 0;
251
f6a1f490 252#if defined(CONFIG_CPCI405_VER2)
87663b1c 253 {
c609719b
WD
254 unsigned char *dst;
255 ulong len = sizeof(fpgadata);
256 int status;
257 int index;
258 int i;
c609719b
WD
259
260 /*
261 * On CPCI-405 version 2 the environment is saved in eeprom!
262 * FPGA can be gzip compressed (malloc) and booted this late.
263 */
6f4474e8 264 if (cpci405_version() >= 2) {
c609719b
WD
265 /*
266 * Setup GPIO pins (CS6+CS7 as GPIO)
267 */
d1c3b275
SR
268 CPC0_CR0Reg = mfdcr(CPC0_CR0);
269 mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x00300000);
c609719b 270
6d0f6bcf 271 dst = malloc(CONFIG_SYS_FPGA_MAX_SIZE);
f6a1f490
MF
272 if (gunzip(dst, CONFIG_SYS_FPGA_MAX_SIZE,
273 (uchar *)fpgadata, &len) != 0) {
274 printf("GUNZIP ERROR - must RESET board to recover\n");
275 do_reset(NULL, 0, 0, NULL);
c609719b
WD
276 }
277
278 status = fpga_boot(dst, len);
279 if (status != 0) {
280 printf("\nFPGA: Booting failed ");
281 switch (status) {
282 case ERROR_FPGA_PRG_INIT_LOW:
f6a1f490
MF
283 printf("(Timeout: INIT not low after "
284 "asserting PROGRAM*)\n ");
c609719b
WD
285 break;
286 case ERROR_FPGA_PRG_INIT_HIGH:
f6a1f490
MF
287 printf("(Timeout: INIT not high after "
288 "deasserting PROGRAM*)\n ");
c609719b
WD
289 break;
290 case ERROR_FPGA_PRG_DONE:
f6a1f490
MF
291 printf("(Timeout: DONE not high after "
292 "programming FPGA)\n ");
c609719b
WD
293 break;
294 }
295
296 /* display infos on fpgaimage */
297 index = 15;
f6a1f490 298 for (i = 0; i < 4; i++) {
c609719b 299 len = dst[index];
f6a1f490
MF
300 printf("FPGA: %s\n", &(dst[index + 1]));
301 index += len + 3;
c609719b 302 }
f6a1f490 303 putc('\n');
c609719b 304 /* delayed reboot */
f6a1f490
MF
305 for (i = 20; i > 0; i--) {
306 printf("Rebooting in %2d seconds \r", i);
307 for (index = 0; index < 1000; index++)
c609719b
WD
308 udelay(1000);
309 }
f6a1f490 310 putc('\n');
c609719b
WD
311 do_reset(NULL, 0, 0, NULL);
312 }
313
314 /* restore gpio/cs settings */
d1c3b275 315 mtdcr(CPC0_CR0, CPC0_CR0Reg);
c609719b
WD
316
317 puts("FPGA: ");
318
319 /* display infos on fpgaimage */
320 index = 15;
f6a1f490 321 for (i = 0; i < 4; i++) {
c609719b 322 len = dst[index];
f6a1f490
MF
323 printf("%s ", &(dst[index + 1]));
324 index += len + 3;
c609719b 325 }
f6a1f490 326 putc('\n');
c609719b
WD
327
328 free(dst);
6f4474e8
SR
329
330 /*
331 * Reset FPGA via FPGA_DATA pin
332 */
333 SET_FPGA(FPGA_PRG | FPGA_CLK);
334 udelay(1000); /* wait 1ms */
335 SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);
336 udelay(1000); /* wait 1ms */
337
f6a1f490
MF
338#if defined(CONFIG_CPCI405_6U)
339#error HIER GETH ES WEITER MIT IO ACCESSORS
6f4474e8 340 if (cpci405_version() == 3) {
6f4474e8
SR
341 /*
342 * Enable outputs in fpga on version 3 board
343 */
f6a1f490
MF
344 out_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR,
345 in_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR) |
346 CONFIG_SYS_FPGA_MODE_ENABLE_OUTPUT);
6f4474e8
SR
347
348 /*
349 * Set outputs to 0
350 */
f6a1f490 351 out_8((void*)CONFIG_SYS_LED_ADDR, 0x00);
6f4474e8
SR
352
353 /*
354 * Reset external DUART
355 */
f6a1f490
MF
356 out_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR,
357 in_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR) |
358 CONFIG_SYS_FPGA_MODE_DUART_RESET);
6f4474e8 359 udelay(100);
f6a1f490
MF
360 out_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR,
361 in_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR) &
362 ~CONFIG_SYS_FPGA_MODE_DUART_RESET);
6f4474e8 363 }
6f35c531 364#endif
c609719b
WD
365 }
366 else {
6f4474e8
SR
367 puts("\n*** U-Boot Version does not match Board Version!\n");
368 puts("*** CPCI-405 Version 1.x detected!\n");
f6a1f490
MF
369 puts("*** Please use correct U-Boot version "
370 "(CPCI405 instead of CPCI4052)!\n\n");
c609719b 371 }
87663b1c 372 }
c609719b 373#else /* CONFIG_CPCI405_VER2 */
6f4474e8
SR
374 if (cpci405_version() >= 2) {
375 puts("\n*** U-Boot Version does not match Board Version!\n");
376 puts("*** CPCI-405 Board Version 2.x detected!\n");
f6a1f490
MF
377 puts("*** Please use correct U-Boot version "
378 "(CPCI4052 instead of CPCI405)!\n\n");
c609719b 379 }
c609719b
WD
380#endif /* CONFIG_CPCI405_VER2 */
381
afcc4a74
SR
382 /*
383 * Select cts (and not dsr) on uart1
384 */
d1c3b275
SR
385 CPC0_CR0Reg = mfdcr(CPC0_CR0);
386 mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x00001000);
afcc4a74 387
f6a1f490 388 return 0;
c609719b
WD
389}
390
c609719b
WD
391/*
392 * Check Board Identity:
393 */
394
f6a1f490 395int checkboard(void)
c609719b
WD
396{
397#ifndef CONFIG_CPCI405_VER2
398 int index;
399 int len;
400#endif
77ddac94 401 char str[64];
cdb74977 402 int i = getenv_f("serial#", str, sizeof(str));
6f4474e8 403 unsigned short ver;
c609719b 404
f6a1f490 405 puts("Board: ");
c609719b 406
f6a1f490
MF
407 if (i == -1)
408 puts("### No HW ID - assuming CPCI405");
409 else
c609719b 410 puts(str);
c609719b 411
6f4474e8
SR
412 ver = cpci405_version();
413 printf(" (Ver %d.x, ", ver);
c609719b 414
c609719b 415 if (ctermm2()) {
77ddac94 416 char str[4];
1b554406
SR
417
418 /*
419 * Read board-id and save in env-variable
420 */
421 sprintf(str, "%d", *(unsigned char *)0xf0000400);
422 setenv("boardid", str);
423 printf("CTERM-M2 - Id=%s)", str);
c609719b 424 } else {
f6a1f490
MF
425 if (cpci405_host())
426 puts("PCI Host Version)");
427 else
428 puts("PCI Adapter Version)");
c609719b
WD
429 }
430
431#ifndef CONFIG_CPCI405_VER2
f6a1f490 432 puts("\nFPGA: ");
c609719b
WD
433
434 /* display infos on fpgaimage */
435 index = 15;
f6a1f490 436 for (i = 0; i < 4; i++) {
c609719b 437 len = fpgadata[index];
f6a1f490
MF
438 printf("%s ", &(fpgadata[index + 1]));
439 index += len + 3;
c609719b
WD
440 }
441#endif
442
f6a1f490 443 putc('\n');
c609719b
WD
444 return 0;
445}
446
6f35c531 447void reset_phy(void)
c609719b 448{
f6a1f490 449#if defined(CONFIG_LXT971_NO_SLEEP)
c609719b 450
6f35c531
MF
451 /*
452 * Disable sleep mode in LXT971
453 */
454 lxt971_no_sleep();
455#endif
c609719b
WD
456}
457
f6a1f490 458#if defined(CONFIG_CPCI405_VER2) && defined (CONFIG_IDE_RESET)
c609719b
WD
459void ide_set_reset(int on)
460{
c609719b
WD
461 /*
462 * Assert or deassert CompactFlash Reset Pin
463 */
f6a1f490
MF
464 if (on) { /* assert RESET */
465 out_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR,
466 in_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR) &
467 ~CONFIG_SYS_FPGA_MODE_CF_RESET);
468 } else { /* release RESET */
469 out_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR,
470 in_be16((void*)CONFIG_SYS_FPGA_BASE_ADDR) |
471 CONFIG_SYS_FPGA_MODE_CF_RESET);
c609719b
WD
472 }
473}
474
f6a1f490 475#endif /* CONFIG_IDE_RESET && CONFIG_CPCI405_VER2 */
c609719b 476
466fff1a 477#if defined(CONFIG_PCI)
6f35c531
MF
478void cpci405_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
479{
480 unsigned char int_line = 0xff;
481
482 /*
483 * Write pci interrupt line register (cpci405 specific)
484 */
485 switch (PCI_DEV(dev) & 0x03) {
486 case 0:
487 int_line = 27 + 2;
488 break;
489 case 1:
490 int_line = 27 + 3;
491 break;
492 case 2:
493 int_line = 27 + 0;
494 break;
495 case 3:
496 int_line = 27 + 1;
497 break;
498 }
499
500 pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
501}
502
503int pci_pre_init(struct pci_controller *hose)
504{
505 hose->fixup_irq = cpci405_pci_fixup_irq;
506 return 1;
507}
466fff1a 508#endif /* defined(CONFIG_PCI) */
6f35c531 509
600fe46f
MF
510#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
511void ft_board_setup(void *blob, bd_t *bd)
512{
513 int rc;
514
515 __ft_board_setup(blob, bd);
516
517 /*
518 * Disable PCI in adapter mode.
519 */
520 if (!cpci405_host()) {
521 rc = fdt_find_and_setprop(blob, "/plb/pci@ec000000", "status",
522 "disabled", sizeof("disabled"), 1);
523 if (rc) {
524 printf("Unable to update property status in PCI node, "
525 "err=%s\n",
526 fdt_strerror(rc));
527 }
528 }
529}
530#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
531
f6a1f490
MF
532#if defined(CONFIG_CPCI405AB)
533#define ONE_WIRE_CLEAR out_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR + \
534 CONFIG_SYS_FPGA_MODE), \
535 in_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR + \
536 CONFIG_SYS_FPGA_MODE)) | \
537 CONFIG_SYS_FPGA_MODE_1WIRE_DIR)
6f35c531 538
f6a1f490
MF
539#define ONE_WIRE_SET out_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR + \
540 CONFIG_SYS_FPGA_MODE), \
541 in_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR + \
542 CONFIG_SYS_FPGA_MODE)) & \
543 ~CONFIG_SYS_FPGA_MODE_1WIRE_DIR)
1b554406 544
f6a1f490
MF
545#define ONE_WIRE_GET (in_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR + \
546 CONFIG_SYS_FPGA_STATUS)) & \
547 CONFIG_SYS_FPGA_MODE_1WIRE)
1b554406
SR
548
549/*
550 * Generate a 1-wire reset, return 1 if no presence detect was found,
551 * return 0 otherwise.
552 * (NOTE: Does not handle alarm presence from DS2404/DS1994)
553 */
554int OWTouchReset(void)
d4629c8c 555{
1b554406
SR
556 int result;
557
558 ONE_WIRE_CLEAR;
559 udelay(480);
560 ONE_WIRE_SET;
561 udelay(70);
562
563 result = ONE_WIRE_GET;
564
565 udelay(410);
566 return result;
567}
568
1b554406
SR
569/*
570 * Send 1 a 1-wire write bit.
571 * Provide 10us recovery time.
572 */
573void OWWriteBit(int bit)
574{
575 if (bit) {
576 /*
577 * write '1' bit
578 */
579 ONE_WIRE_CLEAR;
580 udelay(6);
581 ONE_WIRE_SET;
582 udelay(64);
583 } else {
584 /*
585 * write '0' bit
586 */
587 ONE_WIRE_CLEAR;
588 udelay(60);
589 ONE_WIRE_SET;
590 udelay(10);
d4629c8c 591 }
1b554406
SR
592}
593
1b554406
SR
594/*
595 * Read a bit from the 1-wire bus and return it.
596 * Provide 10us recovery time.
597 */
598int OWReadBit(void)
599{
600 int result;
601
602 ONE_WIRE_CLEAR;
603 udelay(6);
604 ONE_WIRE_SET;
605 udelay(9);
606
607 result = ONE_WIRE_GET;
608
609 udelay(55);
610 return result;
d4629c8c
SR
611}
612
1b554406
SR
613void OWWriteByte(int data)
614{
615 int loop;
616
f6a1f490 617 for (loop = 0; loop < 8; loop++) {
1b554406
SR
618 OWWriteBit(data & 0x01);
619 data >>= 1;
620 }
621}
622
1b554406 623int OWReadByte(void)
d4629c8c 624{
1b554406
SR
625 int loop, result = 0;
626
f6a1f490 627 for (loop = 0; loop < 8; loop++) {
1b554406 628 result >>= 1;
f6a1f490 629 if (OWReadBit())
1b554406 630 result |= 0x80;
d4629c8c 631 }
1b554406
SR
632
633 return result;
d4629c8c
SR
634}
635
54841ab5 636int do_onewire(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1b554406 637{
f6a1f490 638 unsigned short val;
1b554406
SR
639 int result;
640 int i;
641 unsigned char ow_id[6];
77ddac94 642 char str[32];
1b554406
SR
643
644 /*
645 * Clear 1-wire bit (open drain with pull-up)
646 */
f6a1f490
MF
647 val = in_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR +
648 CONFIG_SYS_FPGA_MODE));
649 val &= ~CONFIG_SYS_FPGA_MODE_1WIRE; /* clear 1-wire bit */
650 out_be16((void*)(CONFIG_SYS_FPGA_BASE_ADDR +
651 CONFIG_SYS_FPGA_MODE), val);
1b554406
SR
652
653 result = OWTouchReset();
f6a1f490 654 if (result != 0)
1b554406 655 puts("No 1-wire device detected!\n");
1b554406
SR
656
657 OWWriteByte(0x33); /* send read rom command */
658 OWReadByte(); /* skip family code ( == 0x01) */
f6a1f490 659 for (i = 0; i < 6; i++)
1b554406 660 ow_id[i] = OWReadByte();
1affd5c1 661 OWReadByte(); /* read crc */
1b554406 662
1affd5c1
MF
663 sprintf(str, "%02X%02X%02X%02X%02X%02X",
664 ow_id[0], ow_id[1], ow_id[2], ow_id[3], ow_id[4], ow_id[5]);
1b554406
SR
665 printf("Setting environment variable 'ow_id' to %s\n", str);
666 setenv("ow_id", str);
667
668 return 0;
669}
670U_BOOT_CMD(
671 onewire, 1, 1, do_onewire,
2fb2604d 672 "Read 1-write ID",
a89c33db
WD
673 ""
674);
1b554406 675
f6a1f490
MF
676#define CONFIG_SYS_I2C_EEPROM_ADDR_2 0x51 /* EEPROM CAT24WC32 */
677#define CONFIG_ENV_SIZE_2 0x800 /* 2048 bytes may be used for env vars */
87663b1c
SR
678
679/*
680 * Write backplane ip-address...
681 */
54841ab5 682int do_get_bpip(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
87663b1c 683{
87663b1c
SR
684 char *buf;
685 ulong crc;
686 char str[32];
687 char *ptr;
688 IPaddr_t ipaddr;
689
0e8d1586 690 buf = malloc(CONFIG_ENV_SIZE_2);
f6a1f490
MF
691 if (eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR_2, 0,
692 (uchar *)buf, CONFIG_ENV_SIZE_2))
87663b1c 693 puts("\nError reading backplane EEPROM!\n");
f6a1f490
MF
694 else {
695 crc = crc32(0, (uchar *)(buf+4), CONFIG_ENV_SIZE_2 - 4);
87663b1c 696 if (crc != *(ulong *)buf) {
f6a1f490
MF
697 printf("ERROR: crc mismatch %08lx %08lx\n",
698 crc, *(ulong *)buf);
87663b1c
SR
699 return -1;
700 }
701
702 /*
703 * Find bp_ip
704 */
705 ptr = strstr(buf+4, "bp_ip=");
706 if (ptr == NULL) {
707 printf("ERROR: bp_ip not found!\n");
708 return -1;
709 }
710 ptr += 6;
711 ipaddr = string_to_ip(ptr);
712
713 /*
714 * Update whole ip-addr
715 */
9aabb2f8 716 sprintf(str, "%pI4", &ipaddr);
87663b1c
SR
717 setenv("ipaddr", str);
718 printf("Updated ip_addr from bp_eeprom to %s!\n", str);
719 }
720
721 free(buf);
722
723 return 0;
724}
725U_BOOT_CMD(
726 getbpip, 1, 1, do_get_bpip,
2fb2604d 727 "Update IP-Address with Backplane IP-Address",
a89c33db
WD
728 ""
729);
87663b1c
SR
730
731/*
732 * Set and print backplane ip...
733 */
54841ab5 734int do_set_bpip(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
87663b1c
SR
735{
736 char *buf;
77ddac94 737 char str[32];
87663b1c
SR
738 ulong crc;
739
740 if (argc < 2) {
741 puts("ERROR!\n");
742 return -1;
743 }
744
745 printf("Setting bp_ip to %s\n", argv[1]);
0e8d1586
JCPV
746 buf = malloc(CONFIG_ENV_SIZE_2);
747 memset(buf, 0, CONFIG_ENV_SIZE_2);
87663b1c
SR
748 sprintf(str, "bp_ip=%s", argv[1]);
749 strcpy(buf+4, str);
f6a1f490 750 crc = crc32(0, (uchar *)(buf+4), CONFIG_ENV_SIZE_2 - 4);
87663b1c
SR
751 *(ulong *)buf = crc;
752
f6a1f490
MF
753 if (eeprom_write(CONFIG_SYS_I2C_EEPROM_ADDR_2,
754 0, (uchar *)buf, CONFIG_ENV_SIZE_2))
87663b1c 755 puts("\nError writing backplane EEPROM!\n");
87663b1c
SR
756
757 free(buf);
758
759 return 0;
760}
761U_BOOT_CMD(
762 setbpip, 2, 1, do_set_bpip,
2fb2604d 763 "Write Backplane IP-Address",
a89c33db
WD
764 ""
765);
87663b1c 766
1b554406 767#endif /* CONFIG_CPCI405AB */