upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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869 lines
22 KiB
869 lines
22 KiB
22 years ago
|
/*
|
||
|
|
* (C) Copyright 2001
|
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|
|
* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
|
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|
|
*
|
||
|
|
* See file CREDITS for list of people who contributed to this
|
||
|
|
* project.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation; either version 2 of
|
||
|
|
* the License, or (at your option) any later version.
|
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*
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||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||
|
|
* MA 02111-1307 USA
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||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* I2C Functions similar to the standard memory functions.
|
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|
|
*
|
||
|
|
* There are several parameters in many of the commands that bear further
|
||
|
|
* explanations:
|
||
|
|
*
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||
|
|
* Two of the commands (imm and imw) take a byte/word/long modifier
|
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* (e.g. imm.w specifies the word-length modifier). This was done to
|
||
|
|
* allow manipulating word-length registers. It was not done on any other
|
||
|
|
* commands because it was not deemed useful.
|
||
|
|
*
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||
|
|
* {i2c_chip} is the I2C chip address (the first byte sent on the bus).
|
||
|
|
* Each I2C chip on the bus has a unique address. On the I2C data bus,
|
||
|
|
* the address is the upper seven bits and the LSB is the "read/write"
|
||
|
|
* bit. Note that the {i2c_chip} address specified on the command
|
||
|
|
* line is not shifted up: e.g. a typical EEPROM memory chip may have
|
||
|
|
* an I2C address of 0x50, but the data put on the bus will be 0xA0
|
||
|
|
* for write and 0xA1 for read. This "non shifted" address notation
|
||
|
|
* matches at least half of the data sheets :-/.
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|
*
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||
|
|
* {addr} is the address (or offset) within the chip. Small memory
|
||
|
|
* chips have 8 bit addresses. Large memory chips have 16 bit
|
||
|
|
* addresses. Other memory chips have 9, 10, or 11 bit addresses.
|
||
|
|
* Many non-memory chips have multiple registers and {addr} is used
|
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|
|
* as the register index. Some non-memory chips have only one register
|
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|
|
* and therefore don't need any {addr} parameter.
|
||
|
|
*
|
||
|
|
* The default {addr} parameter is one byte (.1) which works well for
|
||
|
|
* memories and registers with 8 bits of address space.
|
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|
|
*
|
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|
|
* You can specify the length of the {addr} field with the optional .0,
|
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|
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* .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are
|
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|
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* manipulating a single register device which doesn't use an address
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|
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* field, use "0.0" for the address and the ".0" length field will
|
||
|
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* suppress the address in the I2C data stream. This also works for
|
||
|
|
* successive reads using the I2C auto-incrementing memory pointer.
|
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|
|
*
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||
|
|
* If you are manipulating a large memory with 2-byte addresses, use
|
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|
|
* the .2 address modifier, e.g. 210.2 addresses location 528 (decimal).
|
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|
|
*
|
||
|
|
* Then there are the unfortunate memory chips that spill the most
|
||
|
|
* significant 1, 2, or 3 bits of address into the chip address byte.
|
||
|
|
* This effectively makes one chip (logically) look like 2, 4, or
|
||
|
|
* 8 chips. This is handled (awkwardly) by #defining
|
||
|
|
* CFG_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the
|
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|
|
* {addr} field (since .1 is the default, it doesn't actually have to
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|
|
* be specified). Examples: given a memory chip at I2C chip address
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* 0x50, the following would happen...
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* imd 50 0 10 display 16 bytes starting at 0x000
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||
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* On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd>
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* imd 50 100 10 display 16 bytes starting at 0x100
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* On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd>
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* imd 50 210 10 display 16 bytes starting at 0x210
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* On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd>
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||
|
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* This is awfully ugly. It would be nice if someone would think up
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|
|
* a better way of handling this.
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|
*
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|
|
* Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de).
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*/
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#include <common.h>
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|
#include <command.h>
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|
#include <cmd_i2c.h>
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|
#include <i2c.h>
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#include <asm/byteorder.h>
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|
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#if (CONFIG_COMMANDS & CFG_CMD_I2C)
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|
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||
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|
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||
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/* Display values from last command.
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||
|
|
* Memory modify remembered values are different from display memory.
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||
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|
*/
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|
static uchar i2c_dp_last_chip;
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|
static uint i2c_dp_last_addr;
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||
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static uint i2c_dp_last_alen;
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||
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static uint i2c_dp_last_length = 0x10;
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|
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||
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|
static uchar i2c_mm_last_chip;
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|
static uint i2c_mm_last_addr;
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|
static uint i2c_mm_last_alen;
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|
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|
#if defined(CFG_I2C_NOPROBES)
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|
static uchar i2c_no_probes[] = CFG_I2C_NOPROBES;
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|
#endif
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|
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||
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|
static int
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||
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|
mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]);
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|
extern int cmd_get_data_size(char* arg, int default_size);
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||
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|
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||
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|
/*
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||
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|
* Syntax:
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||
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|
* imd {i2c_chip} {addr}{.0, .1, .2} {len}
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|
*/
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#define DISP_LINE_LEN 16
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int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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|
{
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|
u_char chip;
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uint addr, alen, length;
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|
int j, nbytes, linebytes;
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/* We use the last specified parameters, unless new ones are
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|
* entered.
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|
*/
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chip = i2c_dp_last_chip;
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addr = i2c_dp_last_addr;
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alen = i2c_dp_last_alen;
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length = i2c_dp_last_length;
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||
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|
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||
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|
if (argc < 3) {
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||
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|
printf ("Usage:\n%s\n", cmdtp->usage);
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||
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|
return 1;
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||
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|
}
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||
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|
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||
|
|
if ((flag & CMD_FLAG_REPEAT) == 0) {
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|
|
/*
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||
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|
* New command specified.
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||
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|
*/
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|
alen = 1;
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/*
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||
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|
* I2C chip address
|
||
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|
*/
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||
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|
chip = simple_strtoul(argv[1], NULL, 16);
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|
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||
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|
/*
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||
|
|
* I2C data address within the chip. This can be 1 or
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|
|
* 2 bytes long. Some day it might be 3 bytes long :-).
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||
|
|
*/
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||
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|
addr = simple_strtoul(argv[2], NULL, 16);
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alen = 1;
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for(j = 0; j < 8; j++) {
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|
|
if (argv[2][j] == '.') {
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alen = argv[2][j+1] - '0';
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|
if (alen > 4) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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||
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|
return 1;
|
||
|
|
}
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||
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|
break;
|
||
|
|
} else if (argv[2][j] == '\0') {
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||
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|
break;
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||
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|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If another parameter, it is the length to display.
|
||
|
|
* Length is the number of objects, not number of bytes.
|
||
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|
*/
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||
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|
if (argc > 3)
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||
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|
length = simple_strtoul(argv[3], NULL, 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print the lines.
|
||
|
|
*
|
||
|
|
* We buffer all read data, so we can make sure data is read only
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||
|
|
* once.
|
||
|
|
*/
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nbytes = length;
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||
|
|
do {
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|
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unsigned char linebuf[DISP_LINE_LEN];
|
||
|
|
unsigned char *cp;
|
||
|
|
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||
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linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
|
||
|
|
|
||
|
|
if(i2c_read(chip, addr, alen, linebuf, linebytes) != 0) {
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||
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|
printf("Error reading the chip.\n");
|
||
|
|
} else {
|
||
|
|
printf("%04x:", addr);
|
||
|
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cp = linebuf;
|
||
|
|
for (j=0; j<linebytes; j++) {
|
||
|
|
printf(" %02x", *cp++);
|
||
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|
addr++;
|
||
|
|
}
|
||
|
|
printf(" ");
|
||
|
|
cp = linebuf;
|
||
|
|
for (j=0; j<linebytes; j++) {
|
||
|
|
if ((*cp < 0x20) || (*cp > 0x7e))
|
||
|
|
printf(".");
|
||
|
|
else
|
||
|
|
printf("%c", *cp);
|
||
|
|
cp++;
|
||
|
|
}
|
||
|
|
printf("\n");
|
||
|
|
}
|
||
|
|
nbytes -= linebytes;
|
||
|
|
} while (nbytes > 0);
|
||
|
|
|
||
|
|
i2c_dp_last_chip = chip;
|
||
|
|
i2c_dp_last_addr = addr;
|
||
|
|
i2c_dp_last_alen = alen;
|
||
|
|
i2c_dp_last_length = length;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int do_i2c_mm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
return mod_i2c_mem (cmdtp, 1, flag, argc, argv);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int do_i2c_nm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
return mod_i2c_mem (cmdtp, 0, flag, argc, argv);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Write (fill) memory
|
||
|
|
*
|
||
|
|
* Syntax:
|
||
|
|
* imw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
|
||
|
|
*/
|
||
|
|
int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
uchar chip;
|
||
|
|
ulong addr;
|
||
|
|
uint alen;
|
||
|
|
uchar byte;
|
||
|
|
int count;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
if ((argc < 4) || (argc > 5)) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Chip is always specified.
|
||
|
|
*/
|
||
|
|
chip = simple_strtoul(argv[1], NULL, 16);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Address is always specified.
|
||
|
|
*/
|
||
|
|
addr = simple_strtoul(argv[2], NULL, 16);
|
||
|
|
alen = 1;
|
||
|
|
for(j = 0; j < 8; j++) {
|
||
|
|
if (argv[2][j] == '.') {
|
||
|
|
alen = argv[2][j+1] - '0';
|
||
|
|
if(alen > 4) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
} else if (argv[2][j] == '\0') {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Value to write is always specified.
|
||
|
|
*/
|
||
|
|
byte = simple_strtoul(argv[3], NULL, 16);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Optional count
|
||
|
|
*/
|
||
|
|
if(argc == 5) {
|
||
|
|
count = simple_strtoul(argv[4], NULL, 16);
|
||
|
|
} else {
|
||
|
|
count = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
while (count-- > 0) {
|
||
|
|
if(i2c_write(chip, addr++, alen, &byte, 1) != 0) {
|
||
|
|
printf("Error writing the chip.\n");
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Wait for the write to complete. The write can take
|
||
|
|
* up to 10mSec (we allow a little more time).
|
||
|
|
*
|
||
|
|
* On some chips, while the write is in progress, the
|
||
|
|
* chip doesn't respond. This apparently isn't a
|
||
|
|
* universal feature so we don't take advantage of it.
|
||
|
|
*/
|
||
|
|
udelay(11000);
|
||
|
|
#if 0
|
||
|
|
for(timeout = 0; timeout < 10; timeout++) {
|
||
|
|
udelay(2000);
|
||
|
|
if(i2c_probe(chip) == 0)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Calculate a CRC on memory
|
||
|
|
*
|
||
|
|
* Syntax:
|
||
|
|
* icrc32 {i2c_chip} {addr}{.0, .1, .2} {count}
|
||
|
|
*/
|
||
|
|
int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
uchar chip;
|
||
|
|
ulong addr;
|
||
|
|
uint alen;
|
||
|
|
int count;
|
||
|
|
uchar byte;
|
||
|
|
ulong crc;
|
||
|
|
ulong err;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
if (argc < 4) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Chip is always specified.
|
||
|
|
*/
|
||
|
|
chip = simple_strtoul(argv[1], NULL, 16);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Address is always specified.
|
||
|
|
*/
|
||
|
|
addr = simple_strtoul(argv[2], NULL, 16);
|
||
|
|
alen = 1;
|
||
|
|
for(j = 0; j < 8; j++) {
|
||
|
|
if (argv[2][j] == '.') {
|
||
|
|
alen = argv[2][j+1] - '0';
|
||
|
|
if(alen > 4) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
} else if (argv[2][j] == '\0') {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Count is always specified
|
||
|
|
*/
|
||
|
|
count = simple_strtoul(argv[3], NULL, 16);
|
||
|
|
|
||
|
|
printf ("CRC32 for %08lx ... %08lx ==> ", addr, addr + count - 1);
|
||
|
|
/*
|
||
|
|
* CRC a byte at a time. This is going to be slooow, but hey, the
|
||
|
|
* memories are small and slow too so hopefully nobody notices.
|
||
|
|
*/
|
||
|
|
crc = 0;
|
||
|
|
err = 0;
|
||
|
|
while(count-- > 0) {
|
||
|
|
if(i2c_read(chip, addr, alen, &byte, 1) != 0) {
|
||
|
|
err++;
|
||
|
|
}
|
||
|
|
crc = crc32 (crc, &byte, 1);
|
||
|
|
addr++;
|
||
|
|
}
|
||
|
|
if(err > 0)
|
||
|
|
{
|
||
|
|
printf("Error reading the chip,\n");
|
||
|
|
} else {
|
||
|
|
printf ("%08lx\n", crc);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Modify memory.
|
||
|
|
*
|
||
|
|
* Syntax:
|
||
|
|
* imm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
|
||
|
|
* inm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int
|
||
|
|
mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
uchar chip;
|
||
|
|
ulong addr;
|
||
|
|
uint alen;
|
||
|
|
ulong data;
|
||
|
|
int size = 1;
|
||
|
|
int nbytes;
|
||
|
|
int j;
|
||
|
|
extern char console_buffer[];
|
||
|
|
|
||
|
|
if (argc != 3) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_BOOT_RETRY_TIME
|
||
|
|
reset_cmd_timeout(); /* got a good command to get here */
|
||
|
|
#endif
|
||
|
|
/*
|
||
|
|
* We use the last specified parameters, unless new ones are
|
||
|
|
* entered.
|
||
|
|
*/
|
||
|
|
chip = i2c_mm_last_chip;
|
||
|
|
addr = i2c_mm_last_addr;
|
||
|
|
alen = i2c_mm_last_alen;
|
||
|
|
|
||
|
|
if ((flag & CMD_FLAG_REPEAT) == 0) {
|
||
|
|
/*
|
||
|
|
* New command specified. Check for a size specification.
|
||
|
|
* Defaults to byte if no or incorrect specification.
|
||
|
|
*/
|
||
|
|
size = cmd_get_data_size(argv[0], 1);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Chip is always specified.
|
||
|
|
*/
|
||
|
|
chip = simple_strtoul(argv[1], NULL, 16);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Address is always specified.
|
||
|
|
*/
|
||
|
|
addr = simple_strtoul(argv[2], NULL, 16);
|
||
|
|
alen = 1;
|
||
|
|
for(j = 0; j < 8; j++) {
|
||
|
|
if (argv[2][j] == '.') {
|
||
|
|
alen = argv[2][j+1] - '0';
|
||
|
|
if(alen > 4) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
} else if (argv[2][j] == '\0') {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print the address, followed by value. Then accept input for
|
||
|
|
* the next value. A non-converted value exits.
|
||
|
|
*/
|
||
|
|
do {
|
||
|
|
printf("%08lx:", addr);
|
||
|
|
if(i2c_read(chip, addr, alen, (char *)&data, size) != 0) {
|
||
|
|
printf("\nError reading the chip,\n");
|
||
|
|
} else {
|
||
|
|
data = cpu_to_be32(data);
|
||
|
|
if(size == 1) {
|
||
|
|
printf(" %02lx", (data >> 24) & 0x000000FF);
|
||
|
|
} else if(size == 2) {
|
||
|
|
printf(" %04lx", (data >> 16) & 0x0000FFFF);
|
||
|
|
} else {
|
||
|
|
printf(" %08lx", data);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
nbytes = readline (" ? ");
|
||
|
|
if (nbytes == 0) {
|
||
|
|
/*
|
||
|
|
* <CR> pressed as only input, don't modify current
|
||
|
|
* location and move to next.
|
||
|
|
*/
|
||
|
|
if (incrflag)
|
||
|
|
addr += size;
|
||
|
|
nbytes = size;
|
||
|
|
#ifdef CONFIG_BOOT_RETRY_TIME
|
||
|
|
reset_cmd_timeout(); /* good enough to not time out */
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#ifdef CONFIG_BOOT_RETRY_TIME
|
||
|
|
else if (nbytes == -2) {
|
||
|
|
break; /* timed out, exit the command */
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
else {
|
||
|
|
char *endp;
|
||
|
|
|
||
|
|
data = simple_strtoul(console_buffer, &endp, 16);
|
||
|
|
if(size == 1) {
|
||
|
|
data = data << 24;
|
||
|
|
} else if(size == 2) {
|
||
|
|
data = data << 16;
|
||
|
|
}
|
||
|
|
data = be32_to_cpu(data);
|
||
|
|
nbytes = endp - console_buffer;
|
||
|
|
if (nbytes) {
|
||
|
|
#ifdef CONFIG_BOOT_RETRY_TIME
|
||
|
|
/*
|
||
|
|
* good enough to not time out
|
||
|
|
*/
|
||
|
|
reset_cmd_timeout();
|
||
|
|
#endif
|
||
|
|
if(i2c_write(chip, addr, alen, (char *)&data, size) != 0) {
|
||
|
|
printf("Error writing the chip.\n");
|
||
|
|
}
|
||
|
|
if (incrflag)
|
||
|
|
addr += size;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} while (nbytes);
|
||
|
|
|
||
|
|
chip = i2c_mm_last_chip;
|
||
|
|
addr = i2c_mm_last_addr;
|
||
|
|
alen = i2c_mm_last_alen;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Syntax:
|
||
|
|
* iprobe {addr}{.0, .1, .2}
|
||
|
|
*/
|
||
|
|
int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
int j;
|
||
|
|
#if defined(CFG_I2C_NOPROBES)
|
||
|
|
int k, skip;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
printf("Valid chip addresses:");
|
||
|
|
for(j = 0; j < 128; j++) {
|
||
|
|
#if defined(CFG_I2C_NOPROBES)
|
||
|
|
skip = 0;
|
||
|
|
for (k = 0; k < sizeof(i2c_no_probes); k++){
|
||
|
|
if (j == i2c_no_probes[k]){
|
||
|
|
skip = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (skip)
|
||
|
|
continue;
|
||
|
|
#endif
|
||
|
|
if(i2c_probe(j) == 0) {
|
||
|
|
printf(" %02X", j);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
printf("\n");
|
||
|
|
|
||
|
|
#if defined(CFG_I2C_NOPROBES)
|
||
|
|
puts ("Excluded chip addresses:");
|
||
|
|
for( k = 0; k < sizeof(i2c_no_probes); k++ )
|
||
|
|
printf(" %02X", i2c_no_probes[k] );
|
||
|
|
puts ("\n");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Syntax:
|
||
|
|
* iloop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
|
||
|
|
* {length} - Number of bytes to read
|
||
|
|
* {delay} - A DECIMAL number and defaults to 1000 uSec
|
||
|
|
*/
|
||
|
|
int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
u_char chip;
|
||
|
|
ulong alen;
|
||
|
|
uint addr;
|
||
|
|
uint length;
|
||
|
|
u_char bytes[16];
|
||
|
|
int delay;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
if (argc < 3) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Chip is always specified.
|
||
|
|
*/
|
||
|
|
chip = simple_strtoul(argv[1], NULL, 16);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Address is always specified.
|
||
|
|
*/
|
||
|
|
addr = simple_strtoul(argv[2], NULL, 16);
|
||
|
|
alen = 1;
|
||
|
|
for(j = 0; j < 8; j++) {
|
||
|
|
if (argv[2][j] == '.') {
|
||
|
|
alen = argv[2][j+1] - '0';
|
||
|
|
if (alen > 4) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
} else if (argv[2][j] == '\0') {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Length is the number of objects, not number of bytes.
|
||
|
|
*/
|
||
|
|
length = 1;
|
||
|
|
length = simple_strtoul(argv[3], NULL, 16);
|
||
|
|
if(length > sizeof(bytes)) {
|
||
|
|
length = sizeof(bytes);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The delay time (uSec) is optional.
|
||
|
|
*/
|
||
|
|
delay = 1000;
|
||
|
|
if (argc > 3) {
|
||
|
|
delay = simple_strtoul(argv[4], NULL, 10);
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Run the loop...
|
||
|
|
*/
|
||
|
|
while(1) {
|
||
|
|
if(i2c_read(chip, addr, alen, bytes, length) != 0) {
|
||
|
|
printf("Error reading the chip.\n");
|
||
|
|
}
|
||
|
|
udelay(delay);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* NOTREACHED */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The SDRAM command is separately configured because many
|
||
|
|
* (most?) embedded boards don't use SDRAM DIMMs.
|
||
|
|
*/
|
||
|
|
#if (CONFIG_COMMANDS & CFG_CMD_SDRAM)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Syntax:
|
||
|
|
* sdram {i2c_chip}
|
||
|
|
*/
|
||
|
|
int do_sdram ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
||
|
|
{
|
||
|
|
u_char chip;
|
||
|
|
u_char data[128];
|
||
|
|
u_char cksum;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
if (argc < 2) {
|
||
|
|
printf ("Usage:\n%s\n", cmdtp->usage);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Chip is always specified.
|
||
|
|
*/
|
||
|
|
chip = simple_strtoul(argv[1], NULL, 16);
|
||
|
|
|
||
|
|
if(i2c_read(chip, 0, 1, data, sizeof(data)) != 0) {
|
||
|
|
printf("No SDRAM Serial Presence Detect found.\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
cksum = 0;
|
||
|
|
for (j = 0; j < 63; j++) {
|
||
|
|
cksum += data[j];
|
||
|
|
}
|
||
|
|
if(cksum != data[63]) {
|
||
|
|
printf ("WARNING: Configuration data checksum failure:\n"
|
||
|
|
" is 0x%02x, calculated 0x%02x\n",
|
||
|
|
data[63], cksum);
|
||
|
|
}
|
||
|
|
printf("SPD data revision %d.%d\n",
|
||
|
|
(data[62] >> 4) & 0x0F, data[62] & 0x0F);
|
||
|
|
printf("Bytes used 0x%02X\n", data[0]);
|
||
|
|
printf("Serial memory size 0x%02X\n", 1 << data[1]);
|
||
|
|
printf("Memory type ");
|
||
|
|
switch(data[2]) {
|
||
|
|
case 2: printf("EDO\n"); break;
|
||
|
|
case 4: printf("SDRAM\n"); break;
|
||
|
|
default: printf("unknown\n"); break;
|
||
|
|
}
|
||
|
|
printf("Row address bits ");
|
||
|
|
if((data[3] & 0x00F0) == 0) {
|
||
|
|
printf("%d\n", data[3] & 0x0F);
|
||
|
|
} else {
|
||
|
|
printf("%d/%d\n", data[3] & 0x0F, (data[3] >> 4) & 0x0F);
|
||
|
|
}
|
||
|
|
printf("Column address bits ");
|
||
|
|
if((data[4] & 0x00F0) == 0) {
|
||
|
|
printf("%d\n", data[4] & 0x0F);
|
||
|
|
} else {
|
||
|
|
printf("%d/%d\n", data[4] & 0x0F, (data[4] >> 4) & 0x0F);
|
||
|
|
}
|
||
|
|
printf("Module rows %d\n", data[5]);
|
||
|
|
printf("Module data width %d bits\n", (data[7] << 8) | data[6]);
|
||
|
|
printf("Interface signal levels ");
|
||
|
|
switch(data[8]) {
|
||
|
|
case 0: printf("5.0v/TTL\n"); break;
|
||
|
|
case 1: printf("LVTTL\n"); break;
|
||
|
|
case 2: printf("HSTL 1.5\n"); break;
|
||
|
|
case 3: printf("SSTL 3.3\n"); break;
|
||
|
|
case 4: printf("SSTL 2.5\n"); break;
|
||
|
|
default: printf("unknown\n"); break;
|
||
|
|
}
|
||
|
|
printf("SDRAM cycle time %d.%d nS\n",
|
||
|
|
(data[9] >> 4) & 0x0F, data[9] & 0x0F);
|
||
|
|
printf("SDRAM access time %d.%d nS\n",
|
||
|
|
(data[10] >> 4) & 0x0F, data[10] & 0x0F);
|
||
|
|
printf("EDC configuration ");
|
||
|
|
switch(data[11]) {
|
||
|
|
case 0: printf("None\n"); break;
|
||
|
|
case 1: printf("Parity\n"); break;
|
||
|
|
case 2: printf("ECC\n"); break;
|
||
|
|
default: printf("unknown\n"); break;
|
||
|
|
}
|
||
|
|
if((data[12] & 0x80) == 0) {
|
||
|
|
printf("No self refresh, rate ");
|
||
|
|
} else {
|
||
|
|
printf("Self refresh, rate ");
|
||
|
|
}
|
||
|
|
switch(data[12] & 0x7F) {
|
||
|
|
case 0: printf("15.625uS\n"); break;
|
||
|
|
case 1: printf("3.9uS\n"); break;
|
||
|
|
case 2: printf("7.8uS\n"); break;
|
||
|
|
case 3: printf("31.3uS\n"); break;
|
||
|
|
case 4: printf("62.5uS\n"); break;
|
||
|
|
case 5: printf("125uS\n"); break;
|
||
|
|
default: printf("unknown\n"); break;
|
||
|
|
}
|
||
|
|
printf("SDRAM width (primary) %d\n", data[13] & 0x7F);
|
||
|
|
if((data[13] & 0x80) != 0) {
|
||
|
|
printf(" (second bank) %d\n",
|
||
|
|
2 * (data[13] & 0x7F));
|
||
|
|
}
|
||
|
|
if(data[14] != 0) {
|
||
|
|
printf("EDC width %d\n",
|
||
|
|
data[14] & 0x7F);
|
||
|
|
if((data[14] & 0x80) != 0) {
|
||
|
|
printf(" (second bank) %d\n",
|
||
|
|
2 * (data[14] & 0x7F));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
printf("Min clock delay, back-to-back random column addresses %d\n",
|
||
|
|
data[15]);
|
||
|
|
printf("Burst length(s) ");
|
||
|
|
if(data[16] & 0x80) printf(" Page");
|
||
|
|
if(data[16] & 0x08) printf(" 8");
|
||
|
|
if(data[16] & 0x04) printf(" 4");
|
||
|
|
if(data[16] & 0x02) printf(" 2");
|
||
|
|
if(data[16] & 0x01) printf(" 1");
|
||
|
|
printf("\n");
|
||
|
|
printf("Number of banks %d\n", data[17]);
|
||
|
|
printf("CAS latency(s) ");
|
||
|
|
if(data[18] & 0x80) printf(" TBD");
|
||
|
|
if(data[18] & 0x40) printf(" 7");
|
||
|
|
if(data[18] & 0x20) printf(" 6");
|
||
|
|
if(data[18] & 0x10) printf(" 5");
|
||
|
|
if(data[18] & 0x08) printf(" 4");
|
||
|
|
if(data[18] & 0x04) printf(" 3");
|
||
|
|
if(data[18] & 0x02) printf(" 2");
|
||
|
|
if(data[18] & 0x01) printf(" 1");
|
||
|
|
printf("\n");
|
||
|
|
printf("CS latency(s) ");
|
||
|
|
if(data[19] & 0x80) printf(" TBD");
|
||
|
|
if(data[19] & 0x40) printf(" 6");
|
||
|
|
if(data[19] & 0x20) printf(" 5");
|
||
|
|
if(data[19] & 0x10) printf(" 4");
|
||
|
|
if(data[19] & 0x08) printf(" 3");
|
||
|
|
if(data[19] & 0x04) printf(" 2");
|
||
|
|
if(data[19] & 0x02) printf(" 1");
|
||
|
|
if(data[19] & 0x01) printf(" 0");
|
||
|
|
printf("\n");
|
||
|
|
printf("WE latency(s) ");
|
||
|
|
if(data[20] & 0x80) printf(" TBD");
|
||
|
|
if(data[20] & 0x40) printf(" 6");
|
||
|
|
if(data[20] & 0x20) printf(" 5");
|
||
|
|
if(data[20] & 0x10) printf(" 4");
|
||
|
|
if(data[20] & 0x08) printf(" 3");
|
||
|
|
if(data[20] & 0x04) printf(" 2");
|
||
|
|
if(data[20] & 0x02) printf(" 1");
|
||
|
|
if(data[20] & 0x01) printf(" 0");
|
||
|
|
printf("\n");
|
||
|
|
printf("Module attributes:\n");
|
||
|
|
if(!data[21]) printf(" (none)\n");
|
||
|
|
if(data[21] & 0x80) printf(" TBD (bit 7)\n");
|
||
|
|
if(data[21] & 0x40) printf(" Redundant row address\n");
|
||
|
|
if(data[21] & 0x20) printf(" Differential clock input\n");
|
||
|
|
if(data[21] & 0x10) printf(" Registerd DQMB inputs\n");
|
||
|
|
if(data[21] & 0x08) printf(" Buffered DQMB inputs\n");
|
||
|
|
if(data[21] & 0x04) printf(" On-card PLL\n");
|
||
|
|
if(data[21] & 0x02) printf(" Registered address/control lines\n");
|
||
|
|
if(data[21] & 0x01) printf(" Buffered address/control lines\n");
|
||
|
|
printf("Device attributes:\n");
|
||
|
|
if(data[22] & 0x80) printf(" TBD (bit 7)\n");
|
||
|
|
if(data[22] & 0x40) printf(" TBD (bit 6)\n");
|
||
|
|
if(data[22] & 0x20) printf(" Upper Vcc tolerance 5%%\n");
|
||
|
|
else printf(" Upper Vcc tolerance 10%%\n");
|
||
|
|
if(data[22] & 0x10) printf(" Lower Vcc tolerance 5%%\n");
|
||
|
|
else printf(" Lower Vcc tolerance 10%%\n");
|
||
|
|
if(data[22] & 0x08) printf(" Supports write1/read burst\n");
|
||
|
|
if(data[22] & 0x04) printf(" Supports precharge all\n");
|
||
|
|
if(data[22] & 0x02) printf(" Supports auto precharge\n");
|
||
|
|
if(data[22] & 0x01) printf(" Supports early RAS# precharge\n");
|
||
|
|
printf("SDRAM cycle time (2nd highest CAS latency) %d.%d nS\n",
|
||
|
|
(data[23] >> 4) & 0x0F, data[23] & 0x0F);
|
||
|
|
printf("SDRAM access from clock (2nd highest CAS latency) %d.%d nS\n",
|
||
|
|
(data[24] >> 4) & 0x0F, data[24] & 0x0F);
|
||
|
|
printf("SDRAM cycle time (3rd highest CAS latency) %d.%d nS\n",
|
||
|
|
(data[25] >> 4) & 0x0F, data[25] & 0x0F);
|
||
|
|
printf("SDRAM access from clock (3rd highest CAS latency) %d.%d nS\n",
|
||
|
|
(data[26] >> 4) & 0x0F, data[26] & 0x0F);
|
||
|
|
printf("Minimum row precharge %d nS\n", data[27]);
|
||
|
|
printf("Row active to row active min %d nS\n", data[28]);
|
||
|
|
printf("RAS to CAS delay min %d nS\n", data[29]);
|
||
|
|
printf("Minimum RAS pulse width %d nS\n", data[30]);
|
||
|
|
printf("Density of each row ");
|
||
|
|
if(data[31] & 0x80) printf(" 512MByte");
|
||
|
|
if(data[31] & 0x40) printf(" 256MByte");
|
||
|
|
if(data[31] & 0x20) printf(" 128MByte");
|
||
|
|
if(data[31] & 0x10) printf(" 64MByte");
|
||
|
|
if(data[31] & 0x08) printf(" 32MByte");
|
||
|
|
if(data[31] & 0x04) printf(" 16MByte");
|
||
|
|
if(data[31] & 0x02) printf(" 8MByte");
|
||
|
|
if(data[31] & 0x01) printf(" 4MByte");
|
||
|
|
printf("\n");
|
||
|
|
printf("Command and Address setup %c%d.%d nS\n",
|
||
|
|
(data[32] & 0x80) ? '-' : '+',
|
||
|
|
(data[32] >> 4) & 0x07, data[32] & 0x0F);
|
||
|
|
printf("Command and Address hold %c%d.%d nS\n",
|
||
|
|
(data[33] & 0x80) ? '-' : '+',
|
||
|
|
(data[33] >> 4) & 0x07, data[33] & 0x0F);
|
||
|
|
printf("Data signal input setup %c%d.%d nS\n",
|
||
|
|
(data[34] & 0x80) ? '-' : '+',
|
||
|
|
(data[34] >> 4) & 0x07, data[34] & 0x0F);
|
||
|
|
printf("Data signal input hold %c%d.%d nS\n",
|
||
|
|
(data[35] & 0x80) ? '-' : '+',
|
||
|
|
(data[35] >> 4) & 0x07, data[35] & 0x0F);
|
||
|
|
printf("Manufacturer's JEDEC ID ");
|
||
|
|
for(j = 64; j <= 71; j++)
|
||
|
|
printf("%02X ", data[j]);
|
||
|
|
printf("\n");
|
||
|
|
printf("Manufacturing Location %02X\n", data[72]);
|
||
|
|
printf("Manufacturer's Part Number ");
|
||
|
|
for(j = 73; j <= 90; j++)
|
||
|
|
printf("%02X ", data[j]);
|
||
|
|
printf("\n");
|
||
|
|
printf("Revision Code %02X %02X\n", data[91], data[92]);
|
||
|
|
printf("Manufacturing Date %02X %02X\n", data[93], data[94]);
|
||
|
|
printf("Assembly Serial Number ");
|
||
|
|
for(j = 95; j <= 98; j++)
|
||
|
|
printf("%02X ", data[j]);
|
||
|
|
printf("\n");
|
||
|
|
printf("Speed rating PC%d\n",
|
||
|
|
data[126] == 0x66 ? 66 : data[126]);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif /* CFG_CMD_SDRAM */
|
||
|
|
|
||
|
|
#endif /* CFG_CMD_I2C */
|