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wdenk81a88242002-10-26 15:22:42 +00001/*
2 * (C) Copyright 2001
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * I2C Functions similar to the standard memory functions.
26 *
27 * There are several parameters in many of the commands that bear further
28 * explanations:
29 *
wdenk81a88242002-10-26 15:22:42 +000030 * {i2c_chip} is the I2C chip address (the first byte sent on the bus).
31 * Each I2C chip on the bus has a unique address. On the I2C data bus,
32 * the address is the upper seven bits and the LSB is the "read/write"
33 * bit. Note that the {i2c_chip} address specified on the command
34 * line is not shifted up: e.g. a typical EEPROM memory chip may have
35 * an I2C address of 0x50, but the data put on the bus will be 0xA0
36 * for write and 0xA1 for read. This "non shifted" address notation
37 * matches at least half of the data sheets :-/.
38 *
39 * {addr} is the address (or offset) within the chip. Small memory
40 * chips have 8 bit addresses. Large memory chips have 16 bit
41 * addresses. Other memory chips have 9, 10, or 11 bit addresses.
42 * Many non-memory chips have multiple registers and {addr} is used
43 * as the register index. Some non-memory chips have only one register
44 * and therefore don't need any {addr} parameter.
45 *
46 * The default {addr} parameter is one byte (.1) which works well for
47 * memories and registers with 8 bits of address space.
48 *
49 * You can specify the length of the {addr} field with the optional .0,
50 * .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are
51 * manipulating a single register device which doesn't use an address
52 * field, use "0.0" for the address and the ".0" length field will
53 * suppress the address in the I2C data stream. This also works for
54 * successive reads using the I2C auto-incrementing memory pointer.
55 *
56 * If you are manipulating a large memory with 2-byte addresses, use
57 * the .2 address modifier, e.g. 210.2 addresses location 528 (decimal).
58 *
59 * Then there are the unfortunate memory chips that spill the most
60 * significant 1, 2, or 3 bits of address into the chip address byte.
61 * This effectively makes one chip (logically) look like 2, 4, or
62 * 8 chips. This is handled (awkwardly) by #defining
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020063 * CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the
wdenk81a88242002-10-26 15:22:42 +000064 * {addr} field (since .1 is the default, it doesn't actually have to
65 * be specified). Examples: given a memory chip at I2C chip address
66 * 0x50, the following would happen...
Peter Tyser0f89c542009-04-18 22:34:03 -050067 * i2c md 50 0 10 display 16 bytes starting at 0x000
wdenk81a88242002-10-26 15:22:42 +000068 * On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd>
Peter Tyser0f89c542009-04-18 22:34:03 -050069 * i2c md 50 100 10 display 16 bytes starting at 0x100
wdenk81a88242002-10-26 15:22:42 +000070 * On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd>
Peter Tyser0f89c542009-04-18 22:34:03 -050071 * i2c md 50 210 10 display 16 bytes starting at 0x210
wdenk81a88242002-10-26 15:22:42 +000072 * On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd>
73 * This is awfully ugly. It would be nice if someone would think up
74 * a better way of handling this.
75 *
76 * Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de).
77 */
78
79#include <common.h>
80#include <command.h>
Heiko Schocher67b23a32008-10-15 09:39:47 +020081#include <environment.h>
wdenk81a88242002-10-26 15:22:42 +000082#include <i2c.h>
Heiko Schocher67b23a32008-10-15 09:39:47 +020083#include <malloc.h>
wdenk81a88242002-10-26 15:22:42 +000084#include <asm/byteorder.h>
85
wdenk81a88242002-10-26 15:22:42 +000086/* Display values from last command.
87 * Memory modify remembered values are different from display memory.
88 */
89static uchar i2c_dp_last_chip;
90static uint i2c_dp_last_addr;
91static uint i2c_dp_last_alen;
92static uint i2c_dp_last_length = 0x10;
93
94static uchar i2c_mm_last_chip;
95static uint i2c_mm_last_addr;
96static uint i2c_mm_last_alen;
97
Ben Warrenbb99ad62006-09-07 16:50:54 -040098/* If only one I2C bus is present, the list of devices to ignore when
99 * the probe command is issued is represented by a 1D array of addresses.
100 * When multiple buses are present, the list is an array of bus-address
101 * pairs. The following macros take care of this */
102
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200103#if defined(CONFIG_SYS_I2C_NOPROBES)
Ben Warrenbb99ad62006-09-07 16:50:54 -0400104#if defined(CONFIG_I2C_MULTI_BUS)
105static struct
106{
107 uchar bus;
108 uchar addr;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200109} i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES;
Ben Warrenbb99ad62006-09-07 16:50:54 -0400110#define GET_BUS_NUM i2c_get_bus_num()
111#define COMPARE_BUS(b,i) (i2c_no_probes[(i)].bus == (b))
112#define COMPARE_ADDR(a,i) (i2c_no_probes[(i)].addr == (a))
113#define NO_PROBE_ADDR(i) i2c_no_probes[(i)].addr
114#else /* single bus */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200115static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES;
Ben Warrenbb99ad62006-09-07 16:50:54 -0400116#define GET_BUS_NUM 0
117#define COMPARE_BUS(b,i) ((b) == 0) /* Make compiler happy */
118#define COMPARE_ADDR(a,i) (i2c_no_probes[(i)] == (a))
119#define NO_PROBE_ADDR(i) i2c_no_probes[(i)]
120#endif /* CONFIG_MULTI_BUS */
121
122#define NUM_ELEMENTS_NOPROBE (sizeof(i2c_no_probes)/sizeof(i2c_no_probes[0]))
wdenk81a88242002-10-26 15:22:42 +0000123#endif
124
Heiko Schocher67b23a32008-10-15 09:39:47 +0200125#if defined(CONFIG_I2C_MUX)
126static I2C_MUX_DEVICE *i2c_mux_devices = NULL;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200127static int i2c_mux_busid = CONFIG_SYS_MAX_I2C_BUS;
Heiko Schocher67b23a32008-10-15 09:39:47 +0200128
129DECLARE_GLOBAL_DATA_PTR;
130
131#endif
132
Frans Meulenbroeksa266fe92010-03-26 09:46:40 +0100133#define DISP_LINE_LEN 16
134
Stefan Biglerc649dda2011-04-08 16:24:08 +0200135/* implement possible board specific board init */
136void __def_i2c_init_board(void)
137{
138 return;
139}
140void i2c_init_board(void)
141 __attribute__((weak, alias("__def_i2c_init_board")));
142
Peter Tyser655b34a2009-04-18 22:34:01 -0500143/* TODO: Implement architecture-specific get/set functions */
144unsigned int __def_i2c_get_bus_speed(void)
145{
146 return CONFIG_SYS_I2C_SPEED;
147}
148unsigned int i2c_get_bus_speed(void)
149 __attribute__((weak, alias("__def_i2c_get_bus_speed")));
150
151int __def_i2c_set_bus_speed(unsigned int speed)
152{
153 if (speed != CONFIG_SYS_I2C_SPEED)
154 return -1;
155
156 return 0;
157}
158int i2c_set_bus_speed(unsigned int)
159 __attribute__((weak, alias("__def_i2c_set_bus_speed")));
160
Frans Meulenbroeks652e5352010-02-25 10:12:16 +0100161/*
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100162 * get_alen: small parser helper function to get address length
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200163 * returns the address length
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100164 */
165static uint get_alen(char *arg)
166{
167 int j;
168 int alen;
169
170 alen = 1;
171 for (j = 0; j < 8; j++) {
172 if (arg[j] == '.') {
173 alen = arg[j+1] - '0';
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100174 break;
175 } else if (arg[j] == '\0')
176 break;
177 }
178 return alen;
179}
180
181/*
Frans Meulenbroeks652e5352010-02-25 10:12:16 +0100182 * Syntax:
183 * i2c read {i2c_chip} {devaddr}{.0, .1, .2} {len} {memaddr}
184 */
185
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200186static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Frans Meulenbroeks652e5352010-02-25 10:12:16 +0100187{
188 u_char chip;
189 uint devaddr, alen, length;
190 u_char *memaddr;
Frans Meulenbroeks652e5352010-02-25 10:12:16 +0100191
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200192 if (argc != 5)
193 return cmd_usage(cmdtp);
Frans Meulenbroeks652e5352010-02-25 10:12:16 +0100194
195 /*
196 * I2C chip address
197 */
198 chip = simple_strtoul(argv[1], NULL, 16);
199
200 /*
201 * I2C data address within the chip. This can be 1 or
202 * 2 bytes long. Some day it might be 3 bytes long :-).
203 */
204 devaddr = simple_strtoul(argv[2], NULL, 16);
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100205 alen = get_alen(argv[2]);
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200206 if (alen > 3)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200207 return cmd_usage(cmdtp);
Frans Meulenbroeks652e5352010-02-25 10:12:16 +0100208
209 /*
210 * Length is the number of objects, not number of bytes.
211 */
212 length = simple_strtoul(argv[3], NULL, 16);
213
214 /*
215 * memaddr is the address where to store things in memory
216 */
217 memaddr = (u_char *)simple_strtoul(argv[4], NULL, 16);
218
219 if (i2c_read(chip, devaddr, alen, memaddr, length) != 0) {
220 puts ("Error reading the chip.\n");
221 return 1;
222 }
223 return 0;
224}
225
Frans Meulenbroeks4a8cf332010-03-26 09:46:39 +0100226/*
227 * Syntax:
228 * i2c md {i2c_chip} {addr}{.0, .1, .2} {len}
229 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200230static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000231{
232 u_char chip;
233 uint addr, alen, length;
234 int j, nbytes, linebytes;
235
236 /* We use the last specified parameters, unless new ones are
237 * entered.
238 */
239 chip = i2c_dp_last_chip;
240 addr = i2c_dp_last_addr;
241 alen = i2c_dp_last_alen;
242 length = i2c_dp_last_length;
243
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200244 if (argc < 3)
245 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000246
247 if ((flag & CMD_FLAG_REPEAT) == 0) {
248 /*
249 * New command specified.
250 */
wdenk81a88242002-10-26 15:22:42 +0000251
252 /*
253 * I2C chip address
254 */
255 chip = simple_strtoul(argv[1], NULL, 16);
256
257 /*
258 * I2C data address within the chip. This can be 1 or
259 * 2 bytes long. Some day it might be 3 bytes long :-).
260 */
261 addr = simple_strtoul(argv[2], NULL, 16);
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100262 alen = get_alen(argv[2]);
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200263 if (alen > 3)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200264 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000265
266 /*
267 * If another parameter, it is the length to display.
268 * Length is the number of objects, not number of bytes.
269 */
270 if (argc > 3)
271 length = simple_strtoul(argv[3], NULL, 16);
272 }
273
274 /*
275 * Print the lines.
276 *
277 * We buffer all read data, so we can make sure data is read only
278 * once.
279 */
280 nbytes = length;
281 do {
282 unsigned char linebuf[DISP_LINE_LEN];
283 unsigned char *cp;
284
285 linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
286
Timur Tabie857a5b2006-11-28 12:09:35 -0600287 if (i2c_read(chip, addr, alen, linebuf, linebytes) != 0)
wdenk4b9206e2004-03-23 22:14:11 +0000288 puts ("Error reading the chip.\n");
Timur Tabie857a5b2006-11-28 12:09:35 -0600289 else {
wdenk81a88242002-10-26 15:22:42 +0000290 printf("%04x:", addr);
291 cp = linebuf;
292 for (j=0; j<linebytes; j++) {
293 printf(" %02x", *cp++);
294 addr++;
295 }
wdenk4b9206e2004-03-23 22:14:11 +0000296 puts (" ");
wdenk81a88242002-10-26 15:22:42 +0000297 cp = linebuf;
298 for (j=0; j<linebytes; j++) {
299 if ((*cp < 0x20) || (*cp > 0x7e))
wdenk4b9206e2004-03-23 22:14:11 +0000300 puts (".");
wdenk81a88242002-10-26 15:22:42 +0000301 else
302 printf("%c", *cp);
303 cp++;
304 }
wdenk4b9206e2004-03-23 22:14:11 +0000305 putc ('\n');
wdenk81a88242002-10-26 15:22:42 +0000306 }
307 nbytes -= linebytes;
308 } while (nbytes > 0);
309
310 i2c_dp_last_chip = chip;
311 i2c_dp_last_addr = addr;
312 i2c_dp_last_alen = alen;
313 i2c_dp_last_length = length;
314
315 return 0;
316}
317
wdenk81a88242002-10-26 15:22:42 +0000318
319/* Write (fill) memory
320 *
321 * Syntax:
Peter Tyser0f89c542009-04-18 22:34:03 -0500322 * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
wdenk81a88242002-10-26 15:22:42 +0000323 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200324static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000325{
326 uchar chip;
327 ulong addr;
328 uint alen;
329 uchar byte;
330 int count;
wdenk81a88242002-10-26 15:22:42 +0000331
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200332 if ((argc < 4) || (argc > 5))
333 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000334
335 /*
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200336 * Chip is always specified.
337 */
wdenk81a88242002-10-26 15:22:42 +0000338 chip = simple_strtoul(argv[1], NULL, 16);
339
340 /*
341 * Address is always specified.
342 */
343 addr = simple_strtoul(argv[2], NULL, 16);
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100344 alen = get_alen(argv[2]);
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200345 if (alen > 3)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200346 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000347
348 /*
349 * Value to write is always specified.
350 */
351 byte = simple_strtoul(argv[3], NULL, 16);
352
353 /*
354 * Optional count
355 */
Timur Tabie857a5b2006-11-28 12:09:35 -0600356 if (argc == 5)
wdenk81a88242002-10-26 15:22:42 +0000357 count = simple_strtoul(argv[4], NULL, 16);
Timur Tabie857a5b2006-11-28 12:09:35 -0600358 else
wdenk81a88242002-10-26 15:22:42 +0000359 count = 1;
wdenk81a88242002-10-26 15:22:42 +0000360
361 while (count-- > 0) {
Timur Tabie857a5b2006-11-28 12:09:35 -0600362 if (i2c_write(chip, addr++, alen, &byte, 1) != 0)
wdenk4b9206e2004-03-23 22:14:11 +0000363 puts ("Error writing the chip.\n");
wdenk81a88242002-10-26 15:22:42 +0000364 /*
365 * Wait for the write to complete. The write can take
366 * up to 10mSec (we allow a little more time).
wdenk81a88242002-10-26 15:22:42 +0000367 */
d4f5c722005-08-12 21:16:13 +0200368/*
369 * No write delay with FRAM devices.
370 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200371#if !defined(CONFIG_SYS_I2C_FRAM)
wdenk81a88242002-10-26 15:22:42 +0000372 udelay(11000);
d4f5c722005-08-12 21:16:13 +0200373#endif
wdenk81a88242002-10-26 15:22:42 +0000374 }
375
376 return (0);
377}
378
wdenk81a88242002-10-26 15:22:42 +0000379/* Calculate a CRC on memory
380 *
381 * Syntax:
Peter Tyser0f89c542009-04-18 22:34:03 -0500382 * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count}
wdenk81a88242002-10-26 15:22:42 +0000383 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200384static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000385{
386 uchar chip;
387 ulong addr;
388 uint alen;
389 int count;
390 uchar byte;
391 ulong crc;
392 ulong err;
wdenk81a88242002-10-26 15:22:42 +0000393
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200394 if (argc < 4)
395 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000396
397 /*
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200398 * Chip is always specified.
399 */
wdenk81a88242002-10-26 15:22:42 +0000400 chip = simple_strtoul(argv[1], NULL, 16);
401
402 /*
403 * Address is always specified.
404 */
405 addr = simple_strtoul(argv[2], NULL, 16);
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100406 alen = get_alen(argv[2]);
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200407 if (alen > 3)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200408 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000409
410 /*
411 * Count is always specified
412 */
413 count = simple_strtoul(argv[3], NULL, 16);
414
415 printf ("CRC32 for %08lx ... %08lx ==> ", addr, addr + count - 1);
416 /*
417 * CRC a byte at a time. This is going to be slooow, but hey, the
418 * memories are small and slow too so hopefully nobody notices.
419 */
420 crc = 0;
421 err = 0;
Timur Tabie857a5b2006-11-28 12:09:35 -0600422 while (count-- > 0) {
423 if (i2c_read(chip, addr, alen, &byte, 1) != 0)
wdenk81a88242002-10-26 15:22:42 +0000424 err++;
wdenk81a88242002-10-26 15:22:42 +0000425 crc = crc32 (crc, &byte, 1);
426 addr++;
427 }
Timur Tabie857a5b2006-11-28 12:09:35 -0600428 if (err > 0)
wdenk4b9206e2004-03-23 22:14:11 +0000429 puts ("Error reading the chip,\n");
Timur Tabie857a5b2006-11-28 12:09:35 -0600430 else
wdenk81a88242002-10-26 15:22:42 +0000431 printf ("%08lx\n", crc);
wdenk81a88242002-10-26 15:22:42 +0000432
433 return 0;
434}
435
wdenk81a88242002-10-26 15:22:42 +0000436/* Modify memory.
437 *
438 * Syntax:
Peter Tyser0f89c542009-04-18 22:34:03 -0500439 * i2c mm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
440 * i2c nm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
wdenk81a88242002-10-26 15:22:42 +0000441 */
442
443static int
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200444mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000445{
446 uchar chip;
447 ulong addr;
448 uint alen;
449 ulong data;
450 int size = 1;
451 int nbytes;
wdenk81a88242002-10-26 15:22:42 +0000452 extern char console_buffer[];
453
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200454 if (argc != 3)
455 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000456
457#ifdef CONFIG_BOOT_RETRY_TIME
458 reset_cmd_timeout(); /* got a good command to get here */
459#endif
460 /*
461 * We use the last specified parameters, unless new ones are
462 * entered.
463 */
464 chip = i2c_mm_last_chip;
465 addr = i2c_mm_last_addr;
466 alen = i2c_mm_last_alen;
467
468 if ((flag & CMD_FLAG_REPEAT) == 0) {
469 /*
470 * New command specified. Check for a size specification.
471 * Defaults to byte if no or incorrect specification.
472 */
473 size = cmd_get_data_size(argv[0], 1);
474
475 /*
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200476 * Chip is always specified.
477 */
wdenk81a88242002-10-26 15:22:42 +0000478 chip = simple_strtoul(argv[1], NULL, 16);
479
480 /*
481 * Address is always specified.
482 */
483 addr = simple_strtoul(argv[2], NULL, 16);
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100484 alen = get_alen(argv[2]);
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200485 if (alen > 3)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200486 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000487 }
488
489 /*
490 * Print the address, followed by value. Then accept input for
491 * the next value. A non-converted value exits.
492 */
493 do {
494 printf("%08lx:", addr);
Timur Tabie857a5b2006-11-28 12:09:35 -0600495 if (i2c_read(chip, addr, alen, (uchar *)&data, size) != 0)
wdenk4b9206e2004-03-23 22:14:11 +0000496 puts ("\nError reading the chip,\n");
Timur Tabie857a5b2006-11-28 12:09:35 -0600497 else {
wdenk81a88242002-10-26 15:22:42 +0000498 data = cpu_to_be32(data);
Timur Tabie857a5b2006-11-28 12:09:35 -0600499 if (size == 1)
wdenk81a88242002-10-26 15:22:42 +0000500 printf(" %02lx", (data >> 24) & 0x000000FF);
Timur Tabie857a5b2006-11-28 12:09:35 -0600501 else if (size == 2)
wdenk81a88242002-10-26 15:22:42 +0000502 printf(" %04lx", (data >> 16) & 0x0000FFFF);
Timur Tabie857a5b2006-11-28 12:09:35 -0600503 else
wdenk81a88242002-10-26 15:22:42 +0000504 printf(" %08lx", data);
wdenk81a88242002-10-26 15:22:42 +0000505 }
506
507 nbytes = readline (" ? ");
508 if (nbytes == 0) {
509 /*
510 * <CR> pressed as only input, don't modify current
511 * location and move to next.
512 */
513 if (incrflag)
514 addr += size;
515 nbytes = size;
516#ifdef CONFIG_BOOT_RETRY_TIME
517 reset_cmd_timeout(); /* good enough to not time out */
518#endif
519 }
520#ifdef CONFIG_BOOT_RETRY_TIME
Timur Tabie857a5b2006-11-28 12:09:35 -0600521 else if (nbytes == -2)
wdenk81a88242002-10-26 15:22:42 +0000522 break; /* timed out, exit the command */
wdenk81a88242002-10-26 15:22:42 +0000523#endif
524 else {
525 char *endp;
526
527 data = simple_strtoul(console_buffer, &endp, 16);
Timur Tabie857a5b2006-11-28 12:09:35 -0600528 if (size == 1)
wdenk81a88242002-10-26 15:22:42 +0000529 data = data << 24;
Timur Tabie857a5b2006-11-28 12:09:35 -0600530 else if (size == 2)
wdenk81a88242002-10-26 15:22:42 +0000531 data = data << 16;
wdenk81a88242002-10-26 15:22:42 +0000532 data = be32_to_cpu(data);
533 nbytes = endp - console_buffer;
534 if (nbytes) {
535#ifdef CONFIG_BOOT_RETRY_TIME
536 /*
537 * good enough to not time out
538 */
539 reset_cmd_timeout();
540#endif
Timur Tabie857a5b2006-11-28 12:09:35 -0600541 if (i2c_write(chip, addr, alen, (uchar *)&data, size) != 0)
wdenk4b9206e2004-03-23 22:14:11 +0000542 puts ("Error writing the chip.\n");
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200543#ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
544 udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
wdenk2535d602003-07-17 23:16:40 +0000545#endif
wdenk81a88242002-10-26 15:22:42 +0000546 if (incrflag)
547 addr += size;
548 }
549 }
550 } while (nbytes);
551
Peter Tyser08007072008-08-15 14:36:32 -0500552 i2c_mm_last_chip = chip;
553 i2c_mm_last_addr = addr;
554 i2c_mm_last_alen = alen;
wdenk81a88242002-10-26 15:22:42 +0000555
556 return 0;
557}
558
559/*
560 * Syntax:
Peter Tyser0f89c542009-04-18 22:34:03 -0500561 * i2c probe {addr}{.0, .1, .2}
wdenk81a88242002-10-26 15:22:42 +0000562 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200563static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000564{
565 int j;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200566#if defined(CONFIG_SYS_I2C_NOPROBES)
wdenk81a88242002-10-26 15:22:42 +0000567 int k, skip;
Ben Warrenbb99ad62006-09-07 16:50:54 -0400568 uchar bus = GET_BUS_NUM;
569#endif /* NOPROBES */
wdenk81a88242002-10-26 15:22:42 +0000570
wdenk4b9206e2004-03-23 22:14:11 +0000571 puts ("Valid chip addresses:");
Timur Tabie857a5b2006-11-28 12:09:35 -0600572 for (j = 0; j < 128; j++) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200573#if defined(CONFIG_SYS_I2C_NOPROBES)
wdenk81a88242002-10-26 15:22:42 +0000574 skip = 0;
Timur Tabie857a5b2006-11-28 12:09:35 -0600575 for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) {
576 if (COMPARE_BUS(bus, k) && COMPARE_ADDR(j, k)) {
wdenk81a88242002-10-26 15:22:42 +0000577 skip = 1;
578 break;
579 }
580 }
581 if (skip)
582 continue;
583#endif
Timur Tabie857a5b2006-11-28 12:09:35 -0600584 if (i2c_probe(j) == 0)
wdenk81a88242002-10-26 15:22:42 +0000585 printf(" %02X", j);
wdenk81a88242002-10-26 15:22:42 +0000586 }
wdenk4b9206e2004-03-23 22:14:11 +0000587 putc ('\n');
wdenk81a88242002-10-26 15:22:42 +0000588
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200589#if defined(CONFIG_SYS_I2C_NOPROBES)
wdenk81a88242002-10-26 15:22:42 +0000590 puts ("Excluded chip addresses:");
Timur Tabie857a5b2006-11-28 12:09:35 -0600591 for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) {
592 if (COMPARE_BUS(bus,k))
Ben Warrenbb99ad62006-09-07 16:50:54 -0400593 printf(" %02X", NO_PROBE_ADDR(k));
594 }
wdenk4b9206e2004-03-23 22:14:11 +0000595 putc ('\n');
wdenk81a88242002-10-26 15:22:42 +0000596#endif
597
598 return 0;
599}
600
wdenk81a88242002-10-26 15:22:42 +0000601/*
602 * Syntax:
Peter Tyser0f89c542009-04-18 22:34:03 -0500603 * i2c loop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
wdenk81a88242002-10-26 15:22:42 +0000604 * {length} - Number of bytes to read
605 * {delay} - A DECIMAL number and defaults to 1000 uSec
606 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200607static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000608{
609 u_char chip;
610 ulong alen;
611 uint addr;
612 uint length;
613 u_char bytes[16];
614 int delay;
wdenk81a88242002-10-26 15:22:42 +0000615
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200616 if (argc < 3)
617 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000618
619 /*
620 * Chip is always specified.
621 */
622 chip = simple_strtoul(argv[1], NULL, 16);
623
624 /*
625 * Address is always specified.
626 */
627 addr = simple_strtoul(argv[2], NULL, 16);
Frans Meulenbroeks2c0dc992010-03-26 09:46:41 +0100628 alen = get_alen(argv[2]);
Reinhard Meyer7a92e532010-08-25 14:41:16 +0200629 if (alen > 3)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200630 return cmd_usage(cmdtp);
wdenk81a88242002-10-26 15:22:42 +0000631
632 /*
633 * Length is the number of objects, not number of bytes.
634 */
635 length = 1;
636 length = simple_strtoul(argv[3], NULL, 16);
Timur Tabie857a5b2006-11-28 12:09:35 -0600637 if (length > sizeof(bytes))
wdenk81a88242002-10-26 15:22:42 +0000638 length = sizeof(bytes);
wdenk81a88242002-10-26 15:22:42 +0000639
640 /*
641 * The delay time (uSec) is optional.
642 */
643 delay = 1000;
Timur Tabie857a5b2006-11-28 12:09:35 -0600644 if (argc > 3)
wdenk81a88242002-10-26 15:22:42 +0000645 delay = simple_strtoul(argv[4], NULL, 10);
wdenk81a88242002-10-26 15:22:42 +0000646 /*
647 * Run the loop...
648 */
Timur Tabie857a5b2006-11-28 12:09:35 -0600649 while (1) {
650 if (i2c_read(chip, addr, alen, bytes, length) != 0)
wdenk4b9206e2004-03-23 22:14:11 +0000651 puts ("Error reading the chip.\n");
wdenk81a88242002-10-26 15:22:42 +0000652 udelay(delay);
653 }
654
655 /* NOTREACHED */
656 return 0;
657}
658
wdenk81a88242002-10-26 15:22:42 +0000659/*
660 * The SDRAM command is separately configured because many
661 * (most?) embedded boards don't use SDRAM DIMMs.
662 */
Jon Loeligerc76fe472007-07-08 18:02:23 -0500663#if defined(CONFIG_CMD_SDRAM)
Larry Johnson632de062008-01-11 23:26:18 -0500664static void print_ddr2_tcyc (u_char const b)
665{
666 printf ("%d.", (b >> 4) & 0x0F);
667 switch (b & 0x0F) {
668 case 0x0:
669 case 0x1:
670 case 0x2:
671 case 0x3:
672 case 0x4:
673 case 0x5:
674 case 0x6:
675 case 0x7:
676 case 0x8:
677 case 0x9:
678 printf ("%d ns\n", b & 0x0F);
679 break;
680 case 0xA:
681 puts ("25 ns\n");
682 break;
683 case 0xB:
684 puts ("33 ns\n");
685 break;
686 case 0xC:
687 puts ("66 ns\n");
688 break;
689 case 0xD:
690 puts ("75 ns\n");
691 break;
692 default:
693 puts ("?? ns\n");
694 break;
695 }
696}
697
698static void decode_bits (u_char const b, char const *str[], int const do_once)
699{
700 u_char mask;
701
702 for (mask = 0x80; mask != 0x00; mask >>= 1, ++str) {
703 if (b & mask) {
704 puts (*str);
705 if (do_once)
706 return;
707 }
708 }
709}
wdenk81a88242002-10-26 15:22:42 +0000710
711/*
712 * Syntax:
Peter Tyser0f89c542009-04-18 22:34:03 -0500713 * i2c sdram {i2c_chip}
wdenk81a88242002-10-26 15:22:42 +0000714 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200715static int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
wdenk81a88242002-10-26 15:22:42 +0000716{
Larry Johnson632de062008-01-11 23:26:18 -0500717 enum { unknown, EDO, SDRAM, DDR2 } type;
718
wdenk81a88242002-10-26 15:22:42 +0000719 u_char chip;
720 u_char data[128];
721 u_char cksum;
722 int j;
723
Larry Johnson632de062008-01-11 23:26:18 -0500724 static const char *decode_CAS_DDR2[] = {
725 " TBD", " 6", " 5", " 4", " 3", " 2", " TBD", " TBD"
726 };
727
728 static const char *decode_CAS_default[] = {
729 " TBD", " 7", " 6", " 5", " 4", " 3", " 2", " 1"
730 };
731
732 static const char *decode_CS_WE_default[] = {
733 " TBD", " 6", " 5", " 4", " 3", " 2", " 1", " 0"
734 };
735
736 static const char *decode_byte21_default[] = {
737 " TBD (bit 7)\n",
738 " Redundant row address\n",
739 " Differential clock input\n",
740 " Registerd DQMB inputs\n",
741 " Buffered DQMB inputs\n",
742 " On-card PLL\n",
743 " Registered address/control lines\n",
744 " Buffered address/control lines\n"
745 };
746
747 static const char *decode_byte22_DDR2[] = {
748 " TBD (bit 7)\n",
749 " TBD (bit 6)\n",
750 " TBD (bit 5)\n",
751 " TBD (bit 4)\n",
752 " TBD (bit 3)\n",
753 " Supports partial array self refresh\n",
754 " Supports 50 ohm ODT\n",
755 " Supports weak driver\n"
756 };
757
758 static const char *decode_row_density_DDR2[] = {
759 "512 MiB", "256 MiB", "128 MiB", "16 GiB",
760 "8 GiB", "4 GiB", "2 GiB", "1 GiB"
761 };
762
763 static const char *decode_row_density_default[] = {
764 "512 MiB", "256 MiB", "128 MiB", "64 MiB",
765 "32 MiB", "16 MiB", "8 MiB", "4 MiB"
766 };
767
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200768 if (argc < 2)
769 return cmd_usage(cmdtp);
770
wdenk81a88242002-10-26 15:22:42 +0000771 /*
772 * Chip is always specified.
Larry Johnson632de062008-01-11 23:26:18 -0500773 */
774 chip = simple_strtoul (argv[1], NULL, 16);
wdenk81a88242002-10-26 15:22:42 +0000775
Larry Johnson632de062008-01-11 23:26:18 -0500776 if (i2c_read (chip, 0, 1, data, sizeof (data)) != 0) {
wdenk4b9206e2004-03-23 22:14:11 +0000777 puts ("No SDRAM Serial Presence Detect found.\n");
wdenk81a88242002-10-26 15:22:42 +0000778 return 1;
779 }
780
781 cksum = 0;
782 for (j = 0; j < 63; j++) {
783 cksum += data[j];
784 }
Timur Tabie857a5b2006-11-28 12:09:35 -0600785 if (cksum != data[63]) {
wdenk81a88242002-10-26 15:22:42 +0000786 printf ("WARNING: Configuration data checksum failure:\n"
Larry Johnson632de062008-01-11 23:26:18 -0500787 " is 0x%02x, calculated 0x%02x\n", data[63], cksum);
wdenk81a88242002-10-26 15:22:42 +0000788 }
Larry Johnson632de062008-01-11 23:26:18 -0500789 printf ("SPD data revision %d.%d\n",
wdenk81a88242002-10-26 15:22:42 +0000790 (data[62] >> 4) & 0x0F, data[62] & 0x0F);
Larry Johnson632de062008-01-11 23:26:18 -0500791 printf ("Bytes used 0x%02X\n", data[0]);
792 printf ("Serial memory size 0x%02X\n", 1 << data[1]);
793
wdenk4b9206e2004-03-23 22:14:11 +0000794 puts ("Memory type ");
Larry Johnson632de062008-01-11 23:26:18 -0500795 switch (data[2]) {
Larry Johnson0df6b842008-01-10 22:23:39 -0500796 case 2:
797 type = EDO;
798 puts ("EDO\n");
799 break;
800 case 4:
801 type = SDRAM;
802 puts ("SDRAM\n");
803 break;
804 case 8:
805 type = DDR2;
806 puts ("DDR2\n");
807 break;
808 default:
809 type = unknown;
810 puts ("unknown\n");
811 break;
wdenk81a88242002-10-26 15:22:42 +0000812 }
Larry Johnson632de062008-01-11 23:26:18 -0500813
wdenk4b9206e2004-03-23 22:14:11 +0000814 puts ("Row address bits ");
Timur Tabie857a5b2006-11-28 12:09:35 -0600815 if ((data[3] & 0x00F0) == 0)
Larry Johnson632de062008-01-11 23:26:18 -0500816 printf ("%d\n", data[3] & 0x0F);
Timur Tabie857a5b2006-11-28 12:09:35 -0600817 else
Larry Johnson632de062008-01-11 23:26:18 -0500818 printf ("%d/%d\n", data[3] & 0x0F, (data[3] >> 4) & 0x0F);
819
wdenk4b9206e2004-03-23 22:14:11 +0000820 puts ("Column address bits ");
Timur Tabie857a5b2006-11-28 12:09:35 -0600821 if ((data[4] & 0x00F0) == 0)
Larry Johnson632de062008-01-11 23:26:18 -0500822 printf ("%d\n", data[4] & 0x0F);
Timur Tabie857a5b2006-11-28 12:09:35 -0600823 else
Larry Johnson632de062008-01-11 23:26:18 -0500824 printf ("%d/%d\n", data[4] & 0x0F, (data[4] >> 4) & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -0500825
826 switch (type) {
827 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -0500828 printf ("Number of ranks %d\n",
829 (data[5] & 0x07) + 1);
Larry Johnson0df6b842008-01-10 22:23:39 -0500830 break;
831 default:
Larry Johnson632de062008-01-11 23:26:18 -0500832 printf ("Module rows %d\n", data[5]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500833 break;
834 }
835
836 switch (type) {
837 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -0500838 printf ("Module data width %d bits\n", data[6]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500839 break;
840 default:
Larry Johnson632de062008-01-11 23:26:18 -0500841 printf ("Module data width %d bits\n",
842 (data[7] << 8) | data[6]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500843 break;
844 }
845
wdenk4b9206e2004-03-23 22:14:11 +0000846 puts ("Interface signal levels ");
wdenk81a88242002-10-26 15:22:42 +0000847 switch(data[8]) {
Larry Johnson0df6b842008-01-10 22:23:39 -0500848 case 0: puts ("TTL 5.0 V\n"); break;
wdenk4b9206e2004-03-23 22:14:11 +0000849 case 1: puts ("LVTTL\n"); break;
Larry Johnson0df6b842008-01-10 22:23:39 -0500850 case 2: puts ("HSTL 1.5 V\n"); break;
851 case 3: puts ("SSTL 3.3 V\n"); break;
852 case 4: puts ("SSTL 2.5 V\n"); break;
853 case 5: puts ("SSTL 1.8 V\n"); break;
wdenk4b9206e2004-03-23 22:14:11 +0000854 default: puts ("unknown\n"); break;
wdenk81a88242002-10-26 15:22:42 +0000855 }
Larry Johnson0df6b842008-01-10 22:23:39 -0500856
857 switch (type) {
858 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -0500859 printf ("SDRAM cycle time ");
860 print_ddr2_tcyc (data[9]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500861 break;
862 default:
Larry Johnson632de062008-01-11 23:26:18 -0500863 printf ("SDRAM cycle time %d.%d ns\n",
864 (data[9] >> 4) & 0x0F, data[9] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -0500865 break;
866 }
867
868 switch (type) {
869 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -0500870 printf ("SDRAM access time 0.%d%d ns\n",
871 (data[10] >> 4) & 0x0F, data[10] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -0500872 break;
873 default:
Larry Johnson632de062008-01-11 23:26:18 -0500874 printf ("SDRAM access time %d.%d ns\n",
875 (data[10] >> 4) & 0x0F, data[10] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -0500876 break;
877 }
878
wdenk4b9206e2004-03-23 22:14:11 +0000879 puts ("EDC configuration ");
Larry Johnson632de062008-01-11 23:26:18 -0500880 switch (data[11]) {
wdenk4b9206e2004-03-23 22:14:11 +0000881 case 0: puts ("None\n"); break;
882 case 1: puts ("Parity\n"); break;
883 case 2: puts ("ECC\n"); break;
884 default: puts ("unknown\n"); break;
wdenk81a88242002-10-26 15:22:42 +0000885 }
Larry Johnson632de062008-01-11 23:26:18 -0500886
Timur Tabie857a5b2006-11-28 12:09:35 -0600887 if ((data[12] & 0x80) == 0)
wdenk4b9206e2004-03-23 22:14:11 +0000888 puts ("No self refresh, rate ");
Timur Tabie857a5b2006-11-28 12:09:35 -0600889 else
wdenk4b9206e2004-03-23 22:14:11 +0000890 puts ("Self refresh, rate ");
Larry Johnson632de062008-01-11 23:26:18 -0500891
wdenk81a88242002-10-26 15:22:42 +0000892 switch(data[12] & 0x7F) {
Larry Johnson632de062008-01-11 23:26:18 -0500893 case 0: puts ("15.625 us\n"); break;
894 case 1: puts ("3.9 us\n"); break;
895 case 2: puts ("7.8 us\n"); break;
896 case 3: puts ("31.3 us\n"); break;
897 case 4: puts ("62.5 us\n"); break;
898 case 5: puts ("125 us\n"); break;
wdenk4b9206e2004-03-23 22:14:11 +0000899 default: puts ("unknown\n"); break;
wdenk81a88242002-10-26 15:22:42 +0000900 }
Larry Johnson0df6b842008-01-10 22:23:39 -0500901
902 switch (type) {
903 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -0500904 printf ("SDRAM width (primary) %d\n", data[13]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500905 break;
906 default:
Larry Johnson632de062008-01-11 23:26:18 -0500907 printf ("SDRAM width (primary) %d\n", data[13] & 0x7F);
Larry Johnson0df6b842008-01-10 22:23:39 -0500908 if ((data[13] & 0x80) != 0) {
Larry Johnson632de062008-01-11 23:26:18 -0500909 printf (" (second bank) %d\n",
910 2 * (data[13] & 0x7F));
Larry Johnson0df6b842008-01-10 22:23:39 -0500911 }
912 break;
wdenk81a88242002-10-26 15:22:42 +0000913 }
Larry Johnson0df6b842008-01-10 22:23:39 -0500914
915 switch (type) {
916 case DDR2:
917 if (data[14] != 0)
Larry Johnson632de062008-01-11 23:26:18 -0500918 printf ("EDC width %d\n", data[14]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500919 break;
920 default:
921 if (data[14] != 0) {
Larry Johnson632de062008-01-11 23:26:18 -0500922 printf ("EDC width %d\n",
923 data[14] & 0x7F);
Larry Johnson0df6b842008-01-10 22:23:39 -0500924
925 if ((data[14] & 0x80) != 0) {
Larry Johnson632de062008-01-11 23:26:18 -0500926 printf (" (second bank) %d\n",
927 2 * (data[14] & 0x7F));
Larry Johnson0df6b842008-01-10 22:23:39 -0500928 }
929 }
930 break;
931 }
932
Larry Johnson632de062008-01-11 23:26:18 -0500933 if (DDR2 != type) {
934 printf ("Min clock delay, back-to-back random column addresses "
935 "%d\n", data[15]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500936 }
937
wdenk4b9206e2004-03-23 22:14:11 +0000938 puts ("Burst length(s) ");
939 if (data[16] & 0x80) puts (" Page");
940 if (data[16] & 0x08) puts (" 8");
941 if (data[16] & 0x04) puts (" 4");
942 if (data[16] & 0x02) puts (" 2");
943 if (data[16] & 0x01) puts (" 1");
944 putc ('\n');
Larry Johnson632de062008-01-11 23:26:18 -0500945 printf ("Number of banks %d\n", data[17]);
Larry Johnson0df6b842008-01-10 22:23:39 -0500946
947 switch (type) {
948 case DDR2:
949 puts ("CAS latency(s) ");
Larry Johnson632de062008-01-11 23:26:18 -0500950 decode_bits (data[18], decode_CAS_DDR2, 0);
Larry Johnson0df6b842008-01-10 22:23:39 -0500951 putc ('\n');
952 break;
953 default:
954 puts ("CAS latency(s) ");
Larry Johnson632de062008-01-11 23:26:18 -0500955 decode_bits (data[18], decode_CAS_default, 0);
Larry Johnson0df6b842008-01-10 22:23:39 -0500956 putc ('\n');
957 break;
958 }
959
960 if (DDR2 != type) {
961 puts ("CS latency(s) ");
Larry Johnson632de062008-01-11 23:26:18 -0500962 decode_bits (data[19], decode_CS_WE_default, 0);
Larry Johnson0df6b842008-01-10 22:23:39 -0500963 putc ('\n');
964 }
965
966 if (DDR2 != type) {
967 puts ("WE latency(s) ");
Larry Johnson632de062008-01-11 23:26:18 -0500968 decode_bits (data[20], decode_CS_WE_default, 0);
Larry Johnson0df6b842008-01-10 22:23:39 -0500969 putc ('\n');
970 }
971
972 switch (type) {
973 case DDR2:
974 puts ("Module attributes:\n");
975 if (data[21] & 0x80)
976 puts (" TBD (bit 7)\n");
977 if (data[21] & 0x40)
978 puts (" Analysis probe installed\n");
979 if (data[21] & 0x20)
980 puts (" TBD (bit 5)\n");
981 if (data[21] & 0x10)
982 puts (" FET switch external enable\n");
Larry Johnson632de062008-01-11 23:26:18 -0500983 printf (" %d PLLs on DIMM\n", (data[21] >> 2) & 0x03);
Larry Johnson0df6b842008-01-10 22:23:39 -0500984 if (data[20] & 0x11) {
Larry Johnson632de062008-01-11 23:26:18 -0500985 printf (" %d active registers on DIMM\n",
986 (data[21] & 0x03) + 1);
Larry Johnson0df6b842008-01-10 22:23:39 -0500987 }
988 break;
989 default:
990 puts ("Module attributes:\n");
991 if (!data[21])
992 puts (" (none)\n");
Larry Johnson632de062008-01-11 23:26:18 -0500993 else
994 decode_bits (data[21], decode_byte21_default, 0);
Larry Johnson0df6b842008-01-10 22:23:39 -0500995 break;
996 }
997
998 switch (type) {
999 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001000 decode_bits (data[22], decode_byte22_DDR2, 0);
Larry Johnson0df6b842008-01-10 22:23:39 -05001001 break;
1002 default:
1003 puts ("Device attributes:\n");
1004 if (data[22] & 0x80) puts (" TBD (bit 7)\n");
1005 if (data[22] & 0x40) puts (" TBD (bit 6)\n");
1006 if (data[22] & 0x20) puts (" Upper Vcc tolerance 5%\n");
1007 else puts (" Upper Vcc tolerance 10%\n");
1008 if (data[22] & 0x10) puts (" Lower Vcc tolerance 5%\n");
1009 else puts (" Lower Vcc tolerance 10%\n");
1010 if (data[22] & 0x08) puts (" Supports write1/read burst\n");
1011 if (data[22] & 0x04) puts (" Supports precharge all\n");
1012 if (data[22] & 0x02) puts (" Supports auto precharge\n");
1013 if (data[22] & 0x01) puts (" Supports early RAS# precharge\n");
1014 break;
1015 }
1016
1017 switch (type) {
1018 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001019 printf ("SDRAM cycle time (2nd highest CAS latency) ");
1020 print_ddr2_tcyc (data[23]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001021 break;
1022 default:
Larry Johnson632de062008-01-11 23:26:18 -05001023 printf ("SDRAM cycle time (2nd highest CAS latency) %d."
1024 "%d ns\n", (data[23] >> 4) & 0x0F, data[23] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001025 break;
1026 }
1027
1028 switch (type) {
1029 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001030 printf ("SDRAM access from clock (2nd highest CAS latency) 0."
1031 "%d%d ns\n", (data[24] >> 4) & 0x0F, data[24] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001032 break;
1033 default:
Larry Johnson632de062008-01-11 23:26:18 -05001034 printf ("SDRAM access from clock (2nd highest CAS latency) %d."
1035 "%d ns\n", (data[24] >> 4) & 0x0F, data[24] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001036 break;
1037 }
1038
1039 switch (type) {
1040 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001041 printf ("SDRAM cycle time (3rd highest CAS latency) ");
1042 print_ddr2_tcyc (data[25]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001043 break;
1044 default:
Larry Johnson632de062008-01-11 23:26:18 -05001045 printf ("SDRAM cycle time (3rd highest CAS latency) %d."
1046 "%d ns\n", (data[25] >> 4) & 0x0F, data[25] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001047 break;
1048 }
1049
1050 switch (type) {
1051 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001052 printf ("SDRAM access from clock (3rd highest CAS latency) 0."
1053 "%d%d ns\n", (data[26] >> 4) & 0x0F, data[26] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001054 break;
1055 default:
Larry Johnson632de062008-01-11 23:26:18 -05001056 printf ("SDRAM access from clock (3rd highest CAS latency) %d."
1057 "%d ns\n", (data[26] >> 4) & 0x0F, data[26] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001058 break;
1059 }
1060
1061 switch (type) {
1062 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001063 printf ("Minimum row precharge %d.%02d ns\n",
1064 (data[27] >> 2) & 0x3F, 25 * (data[27] & 0x03));
Larry Johnson0df6b842008-01-10 22:23:39 -05001065 break;
1066 default:
Larry Johnson632de062008-01-11 23:26:18 -05001067 printf ("Minimum row precharge %d ns\n", data[27]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001068 break;
1069 }
1070
1071 switch (type) {
1072 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001073 printf ("Row active to row active min %d.%02d ns\n",
1074 (data[28] >> 2) & 0x3F, 25 * (data[28] & 0x03));
Larry Johnson0df6b842008-01-10 22:23:39 -05001075 break;
1076 default:
Larry Johnson632de062008-01-11 23:26:18 -05001077 printf ("Row active to row active min %d ns\n", data[28]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001078 break;
1079 }
1080
1081 switch (type) {
1082 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001083 printf ("RAS to CAS delay min %d.%02d ns\n",
1084 (data[29] >> 2) & 0x3F, 25 * (data[29] & 0x03));
Larry Johnson0df6b842008-01-10 22:23:39 -05001085 break;
1086 default:
Larry Johnson632de062008-01-11 23:26:18 -05001087 printf ("RAS to CAS delay min %d ns\n", data[29]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001088 break;
1089 }
1090
Larry Johnson632de062008-01-11 23:26:18 -05001091 printf ("Minimum RAS pulse width %d ns\n", data[30]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001092
1093 switch (type) {
1094 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001095 puts ("Density of each row ");
1096 decode_bits (data[31], decode_row_density_DDR2, 1);
1097 putc ('\n');
Larry Johnson0df6b842008-01-10 22:23:39 -05001098 break;
1099 default:
Larry Johnson632de062008-01-11 23:26:18 -05001100 puts ("Density of each row ");
1101 decode_bits (data[31], decode_row_density_default, 1);
1102 putc ('\n');
Larry Johnson0df6b842008-01-10 22:23:39 -05001103 break;
1104 }
1105
1106 switch (type) {
1107 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001108 puts ("Command and Address setup ");
Larry Johnson0df6b842008-01-10 22:23:39 -05001109 if (data[32] >= 0xA0) {
Larry Johnson632de062008-01-11 23:26:18 -05001110 printf ("1.%d%d ns\n",
1111 ((data[32] >> 4) & 0x0F) - 10, data[32] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001112 } else {
Larry Johnson632de062008-01-11 23:26:18 -05001113 printf ("0.%d%d ns\n",
1114 ((data[32] >> 4) & 0x0F), data[32] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001115 }
1116 break;
1117 default:
Larry Johnson632de062008-01-11 23:26:18 -05001118 printf ("Command and Address setup %c%d.%d ns\n",
1119 (data[32] & 0x80) ? '-' : '+',
1120 (data[32] >> 4) & 0x07, data[32] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001121 break;
1122 }
1123
1124 switch (type) {
1125 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001126 puts ("Command and Address hold ");
Larry Johnson0df6b842008-01-10 22:23:39 -05001127 if (data[33] >= 0xA0) {
Larry Johnson632de062008-01-11 23:26:18 -05001128 printf ("1.%d%d ns\n",
1129 ((data[33] >> 4) & 0x0F) - 10, data[33] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001130 } else {
Larry Johnson632de062008-01-11 23:26:18 -05001131 printf ("0.%d%d ns\n",
1132 ((data[33] >> 4) & 0x0F), data[33] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001133 }
1134 break;
1135 default:
Larry Johnson632de062008-01-11 23:26:18 -05001136 printf ("Command and Address hold %c%d.%d ns\n",
1137 (data[33] & 0x80) ? '-' : '+',
1138 (data[33] >> 4) & 0x07, data[33] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001139 break;
1140 }
1141
1142 switch (type) {
1143 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001144 printf ("Data signal input setup 0.%d%d ns\n",
1145 (data[34] >> 4) & 0x0F, data[34] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001146 break;
1147 default:
Larry Johnson632de062008-01-11 23:26:18 -05001148 printf ("Data signal input setup %c%d.%d ns\n",
1149 (data[34] & 0x80) ? '-' : '+',
1150 (data[34] >> 4) & 0x07, data[34] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001151 break;
1152 }
1153
1154 switch (type) {
1155 case DDR2:
Larry Johnson632de062008-01-11 23:26:18 -05001156 printf ("Data signal input hold 0.%d%d ns\n",
1157 (data[35] >> 4) & 0x0F, data[35] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001158 break;
1159 default:
Larry Johnson632de062008-01-11 23:26:18 -05001160 printf ("Data signal input hold %c%d.%d ns\n",
1161 (data[35] & 0x80) ? '-' : '+',
1162 (data[35] >> 4) & 0x07, data[35] & 0x0F);
Larry Johnson0df6b842008-01-10 22:23:39 -05001163 break;
1164 }
1165
wdenk4b9206e2004-03-23 22:14:11 +00001166 puts ("Manufacturer's JEDEC ID ");
Timur Tabie857a5b2006-11-28 12:09:35 -06001167 for (j = 64; j <= 71; j++)
Larry Johnson632de062008-01-11 23:26:18 -05001168 printf ("%02X ", data[j]);
wdenk4b9206e2004-03-23 22:14:11 +00001169 putc ('\n');
Larry Johnson632de062008-01-11 23:26:18 -05001170 printf ("Manufacturing Location %02X\n", data[72]);
wdenk4b9206e2004-03-23 22:14:11 +00001171 puts ("Manufacturer's Part Number ");
Timur Tabie857a5b2006-11-28 12:09:35 -06001172 for (j = 73; j <= 90; j++)
Larry Johnson632de062008-01-11 23:26:18 -05001173 printf ("%02X ", data[j]);
wdenk4b9206e2004-03-23 22:14:11 +00001174 putc ('\n');
Larry Johnson632de062008-01-11 23:26:18 -05001175 printf ("Revision Code %02X %02X\n", data[91], data[92]);
1176 printf ("Manufacturing Date %02X %02X\n", data[93], data[94]);
wdenk4b9206e2004-03-23 22:14:11 +00001177 puts ("Assembly Serial Number ");
Timur Tabie857a5b2006-11-28 12:09:35 -06001178 for (j = 95; j <= 98; j++)
Larry Johnson632de062008-01-11 23:26:18 -05001179 printf ("%02X ", data[j]);
wdenk4b9206e2004-03-23 22:14:11 +00001180 putc ('\n');
wdenk81a88242002-10-26 15:22:42 +00001181
Larry Johnson0df6b842008-01-10 22:23:39 -05001182 if (DDR2 != type) {
Larry Johnson632de062008-01-11 23:26:18 -05001183 printf ("Speed rating PC%d\n",
1184 data[126] == 0x66 ? 66 : data[126]);
Larry Johnson0df6b842008-01-10 22:23:39 -05001185 }
wdenk81a88242002-10-26 15:22:42 +00001186 return 0;
1187}
Jon Loeliger90253172007-07-10 11:02:44 -05001188#endif
wdenk81a88242002-10-26 15:22:42 +00001189
Heiko Schocher67b23a32008-10-15 09:39:47 +02001190#if defined(CONFIG_I2C_MUX)
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001191static int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Heiko Schocher67b23a32008-10-15 09:39:47 +02001192{
1193 int ret=0;
1194
1195 if (argc == 1) {
1196 /* show all busses */
1197 I2C_MUX *mux;
1198 I2C_MUX_DEVICE *device = i2c_mux_devices;
1199
1200 printf ("Busses reached over muxes:\n");
1201 while (device != NULL) {
1202 printf ("Bus ID: %x\n", device->busid);
1203 printf (" reached over Mux(es):\n");
1204 mux = device->mux;
1205 while (mux != NULL) {
1206 printf (" %s@%x ch: %x\n", mux->name, mux->chip, mux->channel);
1207 mux = mux->next;
1208 }
1209 device = device->next;
1210 }
1211 } else {
Wolfgang Denke8260cb2011-11-04 15:55:54 +00001212 (void)i2c_mux_ident_muxstring ((uchar *)argv[1]);
Heiko Schocher67b23a32008-10-15 09:39:47 +02001213 ret = 0;
1214 }
1215 return ret;
1216}
1217#endif /* CONFIG_I2C_MUX */
1218
Ben Warrenbb99ad62006-09-07 16:50:54 -04001219#if defined(CONFIG_I2C_MULTI_BUS)
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001220static int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Ben Warrenbb99ad62006-09-07 16:50:54 -04001221{
1222 int bus_idx, ret=0;
1223
Timur Tabie857a5b2006-11-28 12:09:35 -06001224 if (argc == 1)
1225 /* querying current setting */
Ben Warrenbb99ad62006-09-07 16:50:54 -04001226 printf("Current bus is %d\n", i2c_get_bus_num());
Timur Tabie857a5b2006-11-28 12:09:35 -06001227 else {
Ben Warrenbb99ad62006-09-07 16:50:54 -04001228 bus_idx = simple_strtoul(argv[1], NULL, 10);
1229 printf("Setting bus to %d\n", bus_idx);
1230 ret = i2c_set_bus_num(bus_idx);
Timur Tabie857a5b2006-11-28 12:09:35 -06001231 if (ret)
Ben Warrenbb99ad62006-09-07 16:50:54 -04001232 printf("Failure changing bus number (%d)\n", ret);
Ben Warrenbb99ad62006-09-07 16:50:54 -04001233 }
1234 return ret;
1235}
1236#endif /* CONFIG_I2C_MULTI_BUS */
1237
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001238static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Ben Warrenbb99ad62006-09-07 16:50:54 -04001239{
1240 int speed, ret=0;
1241
Timur Tabie857a5b2006-11-28 12:09:35 -06001242 if (argc == 1)
1243 /* querying current speed */
Ben Warrenbb99ad62006-09-07 16:50:54 -04001244 printf("Current bus speed=%d\n", i2c_get_bus_speed());
Timur Tabie857a5b2006-11-28 12:09:35 -06001245 else {
Ben Warrenbb99ad62006-09-07 16:50:54 -04001246 speed = simple_strtoul(argv[1], NULL, 10);
1247 printf("Setting bus speed to %d Hz\n", speed);
1248 ret = i2c_set_bus_speed(speed);
Timur Tabie857a5b2006-11-28 12:09:35 -06001249 if (ret)
Ben Warrenbb99ad62006-09-07 16:50:54 -04001250 printf("Failure changing bus speed (%d)\n", ret);
Ben Warrenbb99ad62006-09-07 16:50:54 -04001251 }
1252 return ret;
1253}
1254
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001255static int do_i2c_mm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001256{
1257 return mod_i2c_mem (cmdtp, 1, flag, argc, argv);
1258}
1259
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001260static int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001261{
1262 return mod_i2c_mem (cmdtp, 0, flag, argc, argv);
1263}
1264
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001265static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001266{
1267 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
1268 return 0;
1269}
1270
1271static cmd_tbl_t cmd_i2c_sub[] = {
1272#if defined(CONFIG_I2C_MUX)
1273 U_BOOT_CMD_MKENT(bus, 1, 1, do_i2c_add_bus, "", ""),
1274#endif /* CONFIG_I2C_MUX */
1275 U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""),
1276#if defined(CONFIG_I2C_MULTI_BUS)
1277 U_BOOT_CMD_MKENT(dev, 1, 1, do_i2c_bus_num, "", ""),
1278#endif /* CONFIG_I2C_MULTI_BUS */
1279 U_BOOT_CMD_MKENT(loop, 3, 1, do_i2c_loop, "", ""),
1280 U_BOOT_CMD_MKENT(md, 3, 1, do_i2c_md, "", ""),
1281 U_BOOT_CMD_MKENT(mm, 2, 1, do_i2c_mm, "", ""),
1282 U_BOOT_CMD_MKENT(mw, 3, 1, do_i2c_mw, "", ""),
1283 U_BOOT_CMD_MKENT(nm, 2, 1, do_i2c_nm, "", ""),
1284 U_BOOT_CMD_MKENT(probe, 0, 1, do_i2c_probe, "", ""),
Frans Meulenbroeks652e5352010-02-25 10:12:16 +01001285 U_BOOT_CMD_MKENT(read, 5, 1, do_i2c_read, "", ""),
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001286 U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""),
1287#if defined(CONFIG_CMD_SDRAM)
1288 U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""),
1289#endif
1290 U_BOOT_CMD_MKENT(speed, 1, 1, do_i2c_bus_speed, "", ""),
1291};
1292
Wolfgang Denk2e5167c2010-10-28 20:00:11 +02001293#ifdef CONFIG_NEEDS_MANUAL_RELOC
Heiko Schocherf1d2b312010-09-17 13:10:39 +02001294void i2c_reloc(void) {
1295 fixup_cmdtable(cmd_i2c_sub, ARRAY_SIZE(cmd_i2c_sub));
1296}
1297#endif
1298
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001299static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Ben Warrenbb99ad62006-09-07 16:50:54 -04001300{
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001301 cmd_tbl_t *c;
1302
Heiko Schocher4444b222010-09-17 13:10:35 +02001303 if (argc < 2)
1304 return cmd_usage(cmdtp);
1305
Peter Tysere96ad5d2009-04-18 22:34:04 -05001306 /* Strip off leading 'i2c' command argument */
1307 argc--;
1308 argv++;
1309
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001310 c = find_cmd_tbl(argv[0], &cmd_i2c_sub[0], ARRAY_SIZE(cmd_i2c_sub));
1311
Wolfgang Denk47e26b12010-07-17 01:06:04 +02001312 if (c)
Frans Meulenbroeksbfc3b772010-02-25 10:12:14 +01001313 return c->cmd(cmdtp, flag, argc, argv);
Wolfgang Denk47e26b12010-07-17 01:06:04 +02001314 else
1315 return cmd_usage(cmdtp);
Ben Warrenbb99ad62006-09-07 16:50:54 -04001316}
wdenk8bde7f72003-06-27 21:31:46 +00001317
1318/***************************************************/
1319
Matthias Fuchsd9fc7032007-03-08 16:25:47 +01001320U_BOOT_CMD(
1321 i2c, 6, 1, do_i2c,
Peter Tyser2fb26042009-01-27 18:03:12 -06001322 "I2C sub-system",
Peter Tyser9166b772009-04-18 22:34:06 -05001323#if defined(CONFIG_I2C_MUX)
Frans Meulenbroeksfb0070e2010-02-25 10:12:15 +01001324 "bus [muxtype:muxaddr:muxchannel] - add a new bus reached over muxes\ni2c "
Peter Tyser9166b772009-04-18 22:34:06 -05001325#endif /* CONFIG_I2C_MUX */
Frans Meulenbroeksfb0070e2010-02-25 10:12:15 +01001326 "crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
Matthias Fuchsd9fc7032007-03-08 16:25:47 +01001327#if defined(CONFIG_I2C_MULTI_BUS)
Peter Tyser9bc2e4e2008-10-01 12:25:04 -05001328 "i2c dev [dev] - show or set current I2C bus\n"
Matthias Fuchsd9fc7032007-03-08 16:25:47 +01001329#endif /* CONFIG_I2C_MULTI_BUS */
Frans Meulenbroeksfb0070e2010-02-25 10:12:15 +01001330 "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n"
Matthias Fuchsd9fc7032007-03-08 16:25:47 +01001331 "i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device\n"
1332 "i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)\n"
1333 "i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n"
1334 "i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n"
Matthias Fuchsd9fc7032007-03-08 16:25:47 +01001335 "i2c probe - show devices on the I2C bus\n"
Frans Meulenbroeks652e5352010-02-25 10:12:16 +01001336 "i2c read chip address[.0, .1, .2] length memaddress - read to memory \n"
Heiko Schochere43a27c2008-10-15 09:33:30 +02001337 "i2c reset - re-init the I2C Controller\n"
Jon Loeligerc76fe472007-07-08 18:02:23 -05001338#if defined(CONFIG_CMD_SDRAM)
Frans Meulenbroeksfb0070e2010-02-25 10:12:15 +01001339 "i2c sdram chip - print SDRAM configuration information\n"
Jon Loeliger90253172007-07-10 11:02:44 -05001340#endif
Frans Meulenbroeksfb0070e2010-02-25 10:12:15 +01001341 "i2c speed [speed] - show or set I2C bus speed"
Matthias Fuchsd9fc7032007-03-08 16:25:47 +01001342);
Heiko Schocher67b23a32008-10-15 09:39:47 +02001343
1344#if defined(CONFIG_I2C_MUX)
Frans Meulenbroeksfd03ea82010-03-26 09:46:42 +01001345static int i2c_mux_add_device(I2C_MUX_DEVICE *dev)
Heiko Schocher67b23a32008-10-15 09:39:47 +02001346{
1347 I2C_MUX_DEVICE *devtmp = i2c_mux_devices;
1348
1349 if (i2c_mux_devices == NULL) {
1350 i2c_mux_devices = dev;
1351 return 0;
1352 }
1353 while (devtmp->next != NULL)
1354 devtmp = devtmp->next;
1355
1356 devtmp->next = dev;
1357 return 0;
1358}
1359
1360I2C_MUX_DEVICE *i2c_mux_search_device(int id)
1361{
1362 I2C_MUX_DEVICE *device = i2c_mux_devices;
1363
1364 while (device != NULL) {
1365 if (device->busid == id)
1366 return device;
1367 device = device->next;
1368 }
1369 return NULL;
1370}
1371
1372/* searches in the buf from *pos the next ':'.
1373 * returns:
1374 * 0 if found (with *pos = where)
1375 * < 0 if an error occured
1376 * > 0 if the end of buf is reached
1377 */
1378static int i2c_mux_search_next (int *pos, uchar *buf, int len)
1379{
1380 while ((buf[*pos] != ':') && (*pos < len)) {
1381 *pos += 1;
1382 }
1383 if (*pos >= len)
1384 return 1;
1385 if (buf[*pos] != ':')
1386 return -1;
1387 return 0;
1388}
1389
1390static int i2c_mux_get_busid (void)
1391{
1392 int tmp = i2c_mux_busid;
1393
1394 i2c_mux_busid ++;
1395 return tmp;
1396}
1397
Michael Jonesf9a78b82011-07-14 22:09:28 +00001398/* Analyses a Muxstring and immediately sends the
1399 commands to the muxes. Runs from flash.
Heiko Schocher67b23a32008-10-15 09:39:47 +02001400 */
1401int i2c_mux_ident_muxstring_f (uchar *buf)
1402{
1403 int pos = 0;
1404 int oldpos;
1405 int ret = 0;
1406 int len = strlen((char *)buf);
1407 int chip;
1408 uchar channel;
1409 int was = 0;
1410
1411 while (ret == 0) {
1412 oldpos = pos;
1413 /* search name */
1414 ret = i2c_mux_search_next(&pos, buf, len);
1415 if (ret != 0)
1416 printf ("ERROR\n");
1417 /* search address */
1418 pos ++;
1419 oldpos = pos;
1420 ret = i2c_mux_search_next(&pos, buf, len);
1421 if (ret != 0)
1422 printf ("ERROR\n");
1423 buf[pos] = 0;
1424 chip = simple_strtoul((char *)&buf[oldpos], NULL, 16);
1425 buf[pos] = ':';
1426 /* search channel */
1427 pos ++;
1428 oldpos = pos;
1429 ret = i2c_mux_search_next(&pos, buf, len);
1430 if (ret < 0)
1431 printf ("ERROR\n");
1432 was = 0;
1433 if (buf[pos] != 0) {
1434 buf[pos] = 0;
1435 was = 1;
1436 }
1437 channel = simple_strtoul((char *)&buf[oldpos], NULL, 16);
1438 if (was)
1439 buf[pos] = ':';
1440 if (i2c_write(chip, 0, 0, &channel, 1) != 0) {
1441 printf ("Error setting Mux: chip:%x channel: \
1442 %x\n", chip, channel);
1443 return -1;
1444 }
1445 pos ++;
1446 oldpos = pos;
1447
1448 }
1449
1450 return 0;
1451}
1452
1453/* Analyses a Muxstring and if this String is correct
1454 * adds a new I2C Bus.
1455 */
1456I2C_MUX_DEVICE *i2c_mux_ident_muxstring (uchar *buf)
1457{
1458 I2C_MUX_DEVICE *device;
1459 I2C_MUX *mux;
1460 int pos = 0;
1461 int oldpos;
1462 int ret = 0;
1463 int len = strlen((char *)buf);
1464 int was = 0;
1465
1466 device = (I2C_MUX_DEVICE *)malloc (sizeof(I2C_MUX_DEVICE));
1467 device->mux = NULL;
1468 device->busid = i2c_mux_get_busid ();
1469 device->next = NULL;
1470 while (ret == 0) {
1471 mux = (I2C_MUX *)malloc (sizeof(I2C_MUX));
1472 mux->next = NULL;
1473 /* search name of mux */
1474 oldpos = pos;
1475 ret = i2c_mux_search_next(&pos, buf, len);
1476 if (ret != 0)
1477 printf ("%s no name.\n", __FUNCTION__);
1478 mux->name = (char *)malloc (pos - oldpos + 1);
1479 memcpy (mux->name, &buf[oldpos], pos - oldpos);
1480 mux->name[pos - oldpos] = 0;
1481 /* search address */
1482 pos ++;
1483 oldpos = pos;
1484 ret = i2c_mux_search_next(&pos, buf, len);
1485 if (ret != 0)
1486 printf ("%s no mux address.\n", __FUNCTION__);
1487 buf[pos] = 0;
1488 mux->chip = simple_strtoul((char *)&buf[oldpos], NULL, 16);
1489 buf[pos] = ':';
1490 /* search channel */
1491 pos ++;
1492 oldpos = pos;
1493 ret = i2c_mux_search_next(&pos, buf, len);
1494 if (ret < 0)
1495 printf ("%s no mux channel.\n", __FUNCTION__);
1496 was = 0;
1497 if (buf[pos] != 0) {
1498 buf[pos] = 0;
1499 was = 1;
1500 }
1501 mux->channel = simple_strtoul((char *)&buf[oldpos], NULL, 16);
1502 if (was)
1503 buf[pos] = ':';
1504 if (device->mux == NULL)
1505 device->mux = mux;
1506 else {
1507 I2C_MUX *muxtmp = device->mux;
1508 while (muxtmp->next != NULL) {
1509 muxtmp = muxtmp->next;
1510 }
1511 muxtmp->next = mux;
1512 }
1513 pos ++;
1514 oldpos = pos;
1515 }
1516 if (ret > 0) {
1517 /* Add Device */
1518 i2c_mux_add_device (device);
1519 return device;
1520 }
1521
1522 return NULL;
1523}
1524
1525int i2x_mux_select_mux(int bus)
1526{
1527 I2C_MUX_DEVICE *dev;
1528 I2C_MUX *mux;
1529
1530 if ((gd->flags & GD_FLG_RELOC) != GD_FLG_RELOC) {
1531 /* select Default Mux Bus */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001532#if defined(CONFIG_SYS_I2C_IVM_BUS)
1533 i2c_mux_ident_muxstring_f ((uchar *)CONFIG_SYS_I2C_IVM_BUS);
Heiko Schocher67b23a32008-10-15 09:39:47 +02001534#else
1535 {
1536 unsigned char *buf;
1537 buf = (unsigned char *) getenv("EEprom_ivm");
1538 if (buf != NULL)
1539 i2c_mux_ident_muxstring_f (buf);
1540 }
1541#endif
1542 return 0;
1543 }
1544 dev = i2c_mux_search_device(bus);
1545 if (dev == NULL)
1546 return -1;
1547
1548 mux = dev->mux;
1549 while (mux != NULL) {
Stefan Biglerc649dda2011-04-08 16:24:08 +02001550 /* do deblocking on each level of mux, before mux config */
1551 i2c_init_board();
Heiko Schocher67b23a32008-10-15 09:39:47 +02001552 if (i2c_write(mux->chip, 0, 0, &mux->channel, 1) != 0) {
1553 printf ("Error setting Mux: chip:%x channel: \
1554 %x\n", mux->chip, mux->channel);
1555 return -1;
1556 }
1557 mux = mux->next;
1558 }
Stefan Biglerc649dda2011-04-08 16:24:08 +02001559 /* do deblocking on each level of mux and after mux config */
1560 i2c_init_board();
Heiko Schocher67b23a32008-10-15 09:39:47 +02001561 return 0;
1562}
1563#endif /* CONFIG_I2C_MUX */