]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_i2c.c
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 * I2C Functions similar to the standard memory functions.
27 * There are several parameters in many of the commands that bear further
30 * Two of the commands (imm and imw) take a byte/word/long modifier
31 * (e.g. imm.w specifies the word-length modifier). This was done to
32 * allow manipulating word-length registers. It was not done on any other
33 * commands because it was not deemed useful.
35 * {i2c_chip} is the I2C chip address (the first byte sent on the bus).
36 * Each I2C chip on the bus has a unique address. On the I2C data bus,
37 * the address is the upper seven bits and the LSB is the "read/write"
38 * bit. Note that the {i2c_chip} address specified on the command
39 * line is not shifted up: e.g. a typical EEPROM memory chip may have
40 * an I2C address of 0x50, but the data put on the bus will be 0xA0
41 * for write and 0xA1 for read. This "non shifted" address notation
42 * matches at least half of the data sheets :-/.
44 * {addr} is the address (or offset) within the chip. Small memory
45 * chips have 8 bit addresses. Large memory chips have 16 bit
46 * addresses. Other memory chips have 9, 10, or 11 bit addresses.
47 * Many non-memory chips have multiple registers and {addr} is used
48 * as the register index. Some non-memory chips have only one register
49 * and therefore don't need any {addr} parameter.
51 * The default {addr} parameter is one byte (.1) which works well for
52 * memories and registers with 8 bits of address space.
54 * You can specify the length of the {addr} field with the optional .0,
55 * .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are
56 * manipulating a single register device which doesn't use an address
57 * field, use "0.0" for the address and the ".0" length field will
58 * suppress the address in the I2C data stream. This also works for
59 * successive reads using the I2C auto-incrementing memory pointer.
61 * If you are manipulating a large memory with 2-byte addresses, use
62 * the .2 address modifier, e.g. 210.2 addresses location 528 (decimal).
64 * Then there are the unfortunate memory chips that spill the most
65 * significant 1, 2, or 3 bits of address into the chip address byte.
66 * This effectively makes one chip (logically) look like 2, 4, or
67 * 8 chips. This is handled (awkwardly) by #defining
68 * CFG_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the
69 * {addr} field (since .1 is the default, it doesn't actually have to
70 * be specified). Examples: given a memory chip at I2C chip address
71 * 0x50, the following would happen...
72 * imd 50 0 10 display 16 bytes starting at 0x000
73 * On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd>
74 * imd 50 100 10 display 16 bytes starting at 0x100
75 * On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd>
76 * imd 50 210 10 display 16 bytes starting at 0x210
77 * On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd>
78 * This is awfully ugly. It would be nice if someone would think up
79 * a better way of handling this.
81 * Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de).
87 #include <asm/byteorder.h>
89 #if (CONFIG_COMMANDS & CFG_CMD_I2C)
92 /* Display values from last command.
93 * Memory modify remembered values are different from display memory.
95 static uchar i2c_dp_last_chip
;
96 static uint i2c_dp_last_addr
;
97 static uint i2c_dp_last_alen
;
98 static uint i2c_dp_last_length
= 0x10;
100 static uchar i2c_mm_last_chip
;
101 static uint i2c_mm_last_addr
;
102 static uint i2c_mm_last_alen
;
104 #if defined(CFG_I2C_NOPROBES)
105 static uchar i2c_no_probes
[] = CFG_I2C_NOPROBES
;
109 mod_i2c_mem(cmd_tbl_t
*cmdtp
, int incrflag
, int flag
, int argc
, char *argv
[]);
110 extern int cmd_get_data_size(char* arg
, int default_size
);
114 * imd {i2c_chip} {addr}{.0, .1, .2} {len}
116 #define DISP_LINE_LEN 16
118 int do_i2c_md ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
121 uint addr
, alen
, length
;
122 int j
, nbytes
, linebytes
;
124 /* We use the last specified parameters, unless new ones are
127 chip
= i2c_dp_last_chip
;
128 addr
= i2c_dp_last_addr
;
129 alen
= i2c_dp_last_alen
;
130 length
= i2c_dp_last_length
;
133 printf ("Usage:\n%s\n", cmdtp
->usage
);
137 if ((flag
& CMD_FLAG_REPEAT
) == 0) {
139 * New command specified.
146 chip
= simple_strtoul(argv
[1], NULL
, 16);
149 * I2C data address within the chip. This can be 1 or
150 * 2 bytes long. Some day it might be 3 bytes long :-).
152 addr
= simple_strtoul(argv
[2], NULL
, 16);
154 for(j
= 0; j
< 8; j
++) {
155 if (argv
[2][j
] == '.') {
156 alen
= argv
[2][j
+1] - '0';
158 printf ("Usage:\n%s\n", cmdtp
->usage
);
162 } else if (argv
[2][j
] == '\0') {
168 * If another parameter, it is the length to display.
169 * Length is the number of objects, not number of bytes.
172 length
= simple_strtoul(argv
[3], NULL
, 16);
178 * We buffer all read data, so we can make sure data is read only
183 unsigned char linebuf
[DISP_LINE_LEN
];
186 linebytes
= (nbytes
> DISP_LINE_LEN
) ? DISP_LINE_LEN
: nbytes
;
188 if(i2c_read(chip
, addr
, alen
, linebuf
, linebytes
) != 0) {
189 printf("Error reading the chip.\n");
191 printf("%04x:", addr
);
193 for (j
=0; j
<linebytes
; j
++) {
194 printf(" %02x", *cp
++);
199 for (j
=0; j
<linebytes
; j
++) {
200 if ((*cp
< 0x20) || (*cp
> 0x7e))
209 } while (nbytes
> 0);
211 i2c_dp_last_chip
= chip
;
212 i2c_dp_last_addr
= addr
;
213 i2c_dp_last_alen
= alen
;
214 i2c_dp_last_length
= length
;
219 int do_i2c_mm ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
221 return mod_i2c_mem (cmdtp
, 1, flag
, argc
, argv
);
225 int do_i2c_nm ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
227 return mod_i2c_mem (cmdtp
, 0, flag
, argc
, argv
);
230 /* Write (fill) memory
233 * imw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
235 int do_i2c_mw ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
244 if ((argc
< 4) || (argc
> 5)) {
245 printf ("Usage:\n%s\n", cmdtp
->usage
);
250 * Chip is always specified.
252 chip
= simple_strtoul(argv
[1], NULL
, 16);
255 * Address is always specified.
257 addr
= simple_strtoul(argv
[2], NULL
, 16);
259 for(j
= 0; j
< 8; j
++) {
260 if (argv
[2][j
] == '.') {
261 alen
= argv
[2][j
+1] - '0';
263 printf ("Usage:\n%s\n", cmdtp
->usage
);
267 } else if (argv
[2][j
] == '\0') {
273 * Value to write is always specified.
275 byte
= simple_strtoul(argv
[3], NULL
, 16);
281 count
= simple_strtoul(argv
[4], NULL
, 16);
286 while (count
-- > 0) {
287 if(i2c_write(chip
, addr
++, alen
, &byte
, 1) != 0) {
288 printf("Error writing the chip.\n");
291 * Wait for the write to complete. The write can take
292 * up to 10mSec (we allow a little more time).
294 * On some chips, while the write is in progress, the
295 * chip doesn't respond. This apparently isn't a
296 * universal feature so we don't take advantage of it.
300 for(timeout
= 0; timeout
< 10; timeout
++) {
302 if(i2c_probe(chip
) == 0)
312 /* Calculate a CRC on memory
315 * icrc32 {i2c_chip} {addr}{.0, .1, .2} {count}
317 int do_i2c_crc (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
329 printf ("Usage:\n%s\n", cmdtp
->usage
);
334 * Chip is always specified.
336 chip
= simple_strtoul(argv
[1], NULL
, 16);
339 * Address is always specified.
341 addr
= simple_strtoul(argv
[2], NULL
, 16);
343 for(j
= 0; j
< 8; j
++) {
344 if (argv
[2][j
] == '.') {
345 alen
= argv
[2][j
+1] - '0';
347 printf ("Usage:\n%s\n", cmdtp
->usage
);
351 } else if (argv
[2][j
] == '\0') {
357 * Count is always specified
359 count
= simple_strtoul(argv
[3], NULL
, 16);
361 printf ("CRC32 for %08lx ... %08lx ==> ", addr
, addr
+ count
- 1);
363 * CRC a byte at a time. This is going to be slooow, but hey, the
364 * memories are small and slow too so hopefully nobody notices.
369 if(i2c_read(chip
, addr
, alen
, &byte
, 1) != 0) {
372 crc
= crc32 (crc
, &byte
, 1);
377 printf("Error reading the chip,\n");
379 printf ("%08lx\n", crc
);
389 * imm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
390 * inm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
394 mod_i2c_mem(cmd_tbl_t
*cmdtp
, int incrflag
, int flag
, int argc
, char *argv
[])
403 extern char console_buffer
[];
406 printf ("Usage:\n%s\n", cmdtp
->usage
);
410 #ifdef CONFIG_BOOT_RETRY_TIME
411 reset_cmd_timeout(); /* got a good command to get here */
414 * We use the last specified parameters, unless new ones are
417 chip
= i2c_mm_last_chip
;
418 addr
= i2c_mm_last_addr
;
419 alen
= i2c_mm_last_alen
;
421 if ((flag
& CMD_FLAG_REPEAT
) == 0) {
423 * New command specified. Check for a size specification.
424 * Defaults to byte if no or incorrect specification.
426 size
= cmd_get_data_size(argv
[0], 1);
429 * Chip is always specified.
431 chip
= simple_strtoul(argv
[1], NULL
, 16);
434 * Address is always specified.
436 addr
= simple_strtoul(argv
[2], NULL
, 16);
438 for(j
= 0; j
< 8; j
++) {
439 if (argv
[2][j
] == '.') {
440 alen
= argv
[2][j
+1] - '0';
442 printf ("Usage:\n%s\n", cmdtp
->usage
);
446 } else if (argv
[2][j
] == '\0') {
453 * Print the address, followed by value. Then accept input for
454 * the next value. A non-converted value exits.
457 printf("%08lx:", addr
);
458 if(i2c_read(chip
, addr
, alen
, (char *)&data
, size
) != 0) {
459 printf("\nError reading the chip,\n");
461 data
= cpu_to_be32(data
);
463 printf(" %02lx", (data
>> 24) & 0x000000FF);
464 } else if(size
== 2) {
465 printf(" %04lx", (data
>> 16) & 0x0000FFFF);
467 printf(" %08lx", data
);
471 nbytes
= readline (" ? ");
474 * <CR> pressed as only input, don't modify current
475 * location and move to next.
480 #ifdef CONFIG_BOOT_RETRY_TIME
481 reset_cmd_timeout(); /* good enough to not time out */
484 #ifdef CONFIG_BOOT_RETRY_TIME
485 else if (nbytes
== -2) {
486 break; /* timed out, exit the command */
492 data
= simple_strtoul(console_buffer
, &endp
, 16);
495 } else if(size
== 2) {
498 data
= be32_to_cpu(data
);
499 nbytes
= endp
- console_buffer
;
501 #ifdef CONFIG_BOOT_RETRY_TIME
503 * good enough to not time out
507 if(i2c_write(chip
, addr
, alen
, (char *)&data
, size
) != 0) {
508 printf("Error writing the chip.\n");
516 chip
= i2c_mm_last_chip
;
517 addr
= i2c_mm_last_addr
;
518 alen
= i2c_mm_last_alen
;
525 * iprobe {addr}{.0, .1, .2}
527 int do_i2c_probe (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
530 #if defined(CFG_I2C_NOPROBES)
534 printf("Valid chip addresses:");
535 for(j
= 0; j
< 128; j
++) {
536 #if defined(CFG_I2C_NOPROBES)
538 for (k
= 0; k
< sizeof(i2c_no_probes
); k
++){
539 if (j
== i2c_no_probes
[k
]){
547 if(i2c_probe(j
) == 0) {
553 #if defined(CFG_I2C_NOPROBES)
554 puts ("Excluded chip addresses:");
555 for( k
= 0; k
< sizeof(i2c_no_probes
); k
++ )
556 printf(" %02X", i2c_no_probes
[k
] );
566 * iloop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
567 * {length} - Number of bytes to read
568 * {delay} - A DECIMAL number and defaults to 1000 uSec
570 int do_i2c_loop(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
581 printf ("Usage:\n%s\n", cmdtp
->usage
);
586 * Chip is always specified.
588 chip
= simple_strtoul(argv
[1], NULL
, 16);
591 * Address is always specified.
593 addr
= simple_strtoul(argv
[2], NULL
, 16);
595 for(j
= 0; j
< 8; j
++) {
596 if (argv
[2][j
] == '.') {
597 alen
= argv
[2][j
+1] - '0';
599 printf ("Usage:\n%s\n", cmdtp
->usage
);
603 } else if (argv
[2][j
] == '\0') {
609 * Length is the number of objects, not number of bytes.
612 length
= simple_strtoul(argv
[3], NULL
, 16);
613 if(length
> sizeof(bytes
)) {
614 length
= sizeof(bytes
);
618 * The delay time (uSec) is optional.
622 delay
= simple_strtoul(argv
[4], NULL
, 10);
628 if(i2c_read(chip
, addr
, alen
, bytes
, length
) != 0) {
629 printf("Error reading the chip.\n");
640 * The SDRAM command is separately configured because many
641 * (most?) embedded boards don't use SDRAM DIMMs.
643 #if (CONFIG_COMMANDS & CFG_CMD_SDRAM)
649 int do_sdram ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
657 printf ("Usage:\n%s\n", cmdtp
->usage
);
661 * Chip is always specified.
663 chip
= simple_strtoul(argv
[1], NULL
, 16);
665 if(i2c_read(chip
, 0, 1, data
, sizeof(data
)) != 0) {
666 printf("No SDRAM Serial Presence Detect found.\n");
671 for (j
= 0; j
< 63; j
++) {
674 if(cksum
!= data
[63]) {
675 printf ("WARNING: Configuration data checksum failure:\n"
676 " is 0x%02x, calculated 0x%02x\n",
679 printf("SPD data revision %d.%d\n",
680 (data
[62] >> 4) & 0x0F, data
[62] & 0x0F);
681 printf("Bytes used 0x%02X\n", data
[0]);
682 printf("Serial memory size 0x%02X\n", 1 << data
[1]);
683 printf("Memory type ");
685 case 2: printf("EDO\n"); break;
686 case 4: printf("SDRAM\n"); break;
687 default: printf("unknown\n"); break;
689 printf("Row address bits ");
690 if((data
[3] & 0x00F0) == 0) {
691 printf("%d\n", data
[3] & 0x0F);
693 printf("%d/%d\n", data
[3] & 0x0F, (data
[3] >> 4) & 0x0F);
695 printf("Column address bits ");
696 if((data
[4] & 0x00F0) == 0) {
697 printf("%d\n", data
[4] & 0x0F);
699 printf("%d/%d\n", data
[4] & 0x0F, (data
[4] >> 4) & 0x0F);
701 printf("Module rows %d\n", data
[5]);
702 printf("Module data width %d bits\n", (data
[7] << 8) | data
[6]);
703 printf("Interface signal levels ");
705 case 0: printf("5.0v/TTL\n"); break;
706 case 1: printf("LVTTL\n"); break;
707 case 2: printf("HSTL 1.5\n"); break;
708 case 3: printf("SSTL 3.3\n"); break;
709 case 4: printf("SSTL 2.5\n"); break;
710 default: printf("unknown\n"); break;
712 printf("SDRAM cycle time %d.%d nS\n",
713 (data
[9] >> 4) & 0x0F, data
[9] & 0x0F);
714 printf("SDRAM access time %d.%d nS\n",
715 (data
[10] >> 4) & 0x0F, data
[10] & 0x0F);
716 printf("EDC configuration ");
718 case 0: printf("None\n"); break;
719 case 1: printf("Parity\n"); break;
720 case 2: printf("ECC\n"); break;
721 default: printf("unknown\n"); break;
723 if((data
[12] & 0x80) == 0) {
724 printf("No self refresh, rate ");
726 printf("Self refresh, rate ");
728 switch(data
[12] & 0x7F) {
729 case 0: printf("15.625uS\n"); break;
730 case 1: printf("3.9uS\n"); break;
731 case 2: printf("7.8uS\n"); break;
732 case 3: printf("31.3uS\n"); break;
733 case 4: printf("62.5uS\n"); break;
734 case 5: printf("125uS\n"); break;
735 default: printf("unknown\n"); break;
737 printf("SDRAM width (primary) %d\n", data
[13] & 0x7F);
738 if((data
[13] & 0x80) != 0) {
739 printf(" (second bank) %d\n",
740 2 * (data
[13] & 0x7F));
743 printf("EDC width %d\n",
745 if((data
[14] & 0x80) != 0) {
746 printf(" (second bank) %d\n",
747 2 * (data
[14] & 0x7F));
750 printf("Min clock delay, back-to-back random column addresses %d\n",
752 printf("Burst length(s) ");
753 if(data
[16] & 0x80) printf(" Page");
754 if(data
[16] & 0x08) printf(" 8");
755 if(data
[16] & 0x04) printf(" 4");
756 if(data
[16] & 0x02) printf(" 2");
757 if(data
[16] & 0x01) printf(" 1");
759 printf("Number of banks %d\n", data
[17]);
760 printf("CAS latency(s) ");
761 if(data
[18] & 0x80) printf(" TBD");
762 if(data
[18] & 0x40) printf(" 7");
763 if(data
[18] & 0x20) printf(" 6");
764 if(data
[18] & 0x10) printf(" 5");
765 if(data
[18] & 0x08) printf(" 4");
766 if(data
[18] & 0x04) printf(" 3");
767 if(data
[18] & 0x02) printf(" 2");
768 if(data
[18] & 0x01) printf(" 1");
770 printf("CS latency(s) ");
771 if(data
[19] & 0x80) printf(" TBD");
772 if(data
[19] & 0x40) printf(" 6");
773 if(data
[19] & 0x20) printf(" 5");
774 if(data
[19] & 0x10) printf(" 4");
775 if(data
[19] & 0x08) printf(" 3");
776 if(data
[19] & 0x04) printf(" 2");
777 if(data
[19] & 0x02) printf(" 1");
778 if(data
[19] & 0x01) printf(" 0");
780 printf("WE latency(s) ");
781 if(data
[20] & 0x80) printf(" TBD");
782 if(data
[20] & 0x40) printf(" 6");
783 if(data
[20] & 0x20) printf(" 5");
784 if(data
[20] & 0x10) printf(" 4");
785 if(data
[20] & 0x08) printf(" 3");
786 if(data
[20] & 0x04) printf(" 2");
787 if(data
[20] & 0x02) printf(" 1");
788 if(data
[20] & 0x01) printf(" 0");
790 printf("Module attributes:\n");
791 if(!data
[21]) printf(" (none)\n");
792 if(data
[21] & 0x80) printf(" TBD (bit 7)\n");
793 if(data
[21] & 0x40) printf(" Redundant row address\n");
794 if(data
[21] & 0x20) printf(" Differential clock input\n");
795 if(data
[21] & 0x10) printf(" Registerd DQMB inputs\n");
796 if(data
[21] & 0x08) printf(" Buffered DQMB inputs\n");
797 if(data
[21] & 0x04) printf(" On-card PLL\n");
798 if(data
[21] & 0x02) printf(" Registered address/control lines\n");
799 if(data
[21] & 0x01) printf(" Buffered address/control lines\n");
800 printf("Device attributes:\n");
801 if(data
[22] & 0x80) printf(" TBD (bit 7)\n");
802 if(data
[22] & 0x40) printf(" TBD (bit 6)\n");
803 if(data
[22] & 0x20) printf(" Upper Vcc tolerance 5%%\n");
804 else printf(" Upper Vcc tolerance 10%%\n");
805 if(data
[22] & 0x10) printf(" Lower Vcc tolerance 5%%\n");
806 else printf(" Lower Vcc tolerance 10%%\n");
807 if(data
[22] & 0x08) printf(" Supports write1/read burst\n");
808 if(data
[22] & 0x04) printf(" Supports precharge all\n");
809 if(data
[22] & 0x02) printf(" Supports auto precharge\n");
810 if(data
[22] & 0x01) printf(" Supports early RAS# precharge\n");
811 printf("SDRAM cycle time (2nd highest CAS latency) %d.%d nS\n",
812 (data
[23] >> 4) & 0x0F, data
[23] & 0x0F);
813 printf("SDRAM access from clock (2nd highest CAS latency) %d.%d nS\n",
814 (data
[24] >> 4) & 0x0F, data
[24] & 0x0F);
815 printf("SDRAM cycle time (3rd highest CAS latency) %d.%d nS\n",
816 (data
[25] >> 4) & 0x0F, data
[25] & 0x0F);
817 printf("SDRAM access from clock (3rd highest CAS latency) %d.%d nS\n",
818 (data
[26] >> 4) & 0x0F, data
[26] & 0x0F);
819 printf("Minimum row precharge %d nS\n", data
[27]);
820 printf("Row active to row active min %d nS\n", data
[28]);
821 printf("RAS to CAS delay min %d nS\n", data
[29]);
822 printf("Minimum RAS pulse width %d nS\n", data
[30]);
823 printf("Density of each row ");
824 if(data
[31] & 0x80) printf(" 512MByte");
825 if(data
[31] & 0x40) printf(" 256MByte");
826 if(data
[31] & 0x20) printf(" 128MByte");
827 if(data
[31] & 0x10) printf(" 64MByte");
828 if(data
[31] & 0x08) printf(" 32MByte");
829 if(data
[31] & 0x04) printf(" 16MByte");
830 if(data
[31] & 0x02) printf(" 8MByte");
831 if(data
[31] & 0x01) printf(" 4MByte");
833 printf("Command and Address setup %c%d.%d nS\n",
834 (data
[32] & 0x80) ? '-' : '+',
835 (data
[32] >> 4) & 0x07, data
[32] & 0x0F);
836 printf("Command and Address hold %c%d.%d nS\n",
837 (data
[33] & 0x80) ? '-' : '+',
838 (data
[33] >> 4) & 0x07, data
[33] & 0x0F);
839 printf("Data signal input setup %c%d.%d nS\n",
840 (data
[34] & 0x80) ? '-' : '+',
841 (data
[34] >> 4) & 0x07, data
[34] & 0x0F);
842 printf("Data signal input hold %c%d.%d nS\n",
843 (data
[35] & 0x80) ? '-' : '+',
844 (data
[35] >> 4) & 0x07, data
[35] & 0x0F);
845 printf("Manufacturer's JEDEC ID ");
846 for(j
= 64; j
<= 71; j
++)
847 printf("%02X ", data
[j
]);
849 printf("Manufacturing Location %02X\n", data
[72]);
850 printf("Manufacturer's Part Number ");
851 for(j
= 73; j
<= 90; j
++)
852 printf("%02X ", data
[j
]);
854 printf("Revision Code %02X %02X\n", data
[91], data
[92]);
855 printf("Manufacturing Date %02X %02X\n", data
[93], data
[94]);
856 printf("Assembly Serial Number ");
857 for(j
= 95; j
<= 98; j
++)
858 printf("%02X ", data
[j
]);
860 printf("Speed rating PC%d\n",
861 data
[126] == 0x66 ? 66 : data
[126]);
865 #endif /* CFG_CMD_SDRAM */
868 /***************************************************/
870 cmd_tbl_t
U_BOOT_CMD(IMD
) = MK_CMD_ENTRY(
871 "imd", 4, 1, do_i2c_md
, \
872 "imd - i2c memory display\n", \
873 "chip address[.0, .1, .2] [# of objects]\n - i2c memory display\n" \
876 cmd_tbl_t
U_BOOT_CMD(IMM
) = MK_CMD_ENTRY(
877 "imm", 3, 1, do_i2c_mm
,
878 "imm - i2c memory modify (auto-incrementing)\n",
879 "chip address[.0, .1, .2]\n"
880 " - memory modify, auto increment address\n"
882 cmd_tbl_t
U_BOOT_CMD(INM
) = MK_CMD_ENTRY(
883 "inm", 3, 1, do_i2c_nm
,
884 "inm - memory modify (constant address)\n",
885 "chip address[.0, .1, .2]\n - memory modify, read and keep address\n"
888 cmd_tbl_t
U_BOOT_CMD(IMW
) = MK_CMD_ENTRY(
889 "imw", 5, 1, do_i2c_mw
,
890 "imw - memory write (fill)\n",
891 "chip address[.0, .1, .2] value [count]\n - memory write (fill)\n"
894 cmd_tbl_t
U_BOOT_CMD(ICRC
) = MK_CMD_ENTRY(
895 "icrc32", 5, 1, do_i2c_crc
,
896 "icrc32 - checksum calculation\n",
897 "chip address[.0, .1, .2] count\n - compute CRC32 checksum\n"
900 cmd_tbl_t
U_BOOT_CMD(IPROBE
) = MK_CMD_ENTRY(
901 "iprobe", 1, 1, do_i2c_probe
,
902 "iprobe - probe to discover valid I2C chip addresses\n",
903 "\n -discover valid I2C chip addresses\n"
907 * Require full name for "iloop" because it is an infinite loop!
909 cmd_tbl_t
U_BOOT_CMD(ILOOP
) = MK_CMD_ENTRY(
910 "iloop", 5, 1, do_i2c_loop
,
911 "iloop - infinite loop on address range\n",
912 "chip address[.0, .1, .2] [# of objects]\n"
913 " - loop, reading a set of addresses\n"
916 #if (CONFIG_COMMANDS & CFG_CMD_SDRAM)
917 cmd_tbl_t
U_BOOT_CMD(ISDRAM
) = MK_CMD_ENTRY(
918 "isdram", 2, 1, do_sdram
,
919 "isdram - print SDRAM configuration information\n",
920 "chip\n - print SDRAM configuration information\n"
921 " (valid chip values 50..57)\n"
924 #endif /* CFG_CMD_I2C */