CONFIG_SYS_I2C_NOPROBES
This option specifies a list of I2C devices that will be skipped
- when the 'i2c probe' command is issued (or 'iprobe' using the legacy
- command). If CONFIG_I2C_MULTI_BUS is set, specify a list of bus-device
- pairs. Otherwise, specify a 1D array of device addresses
+ when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS
+ is set, specify a list of bus-device pairs. Otherwise, specify
+ a 1D array of device addresses
e.g.
#undef CONFIG_I2C_MULTI_BUS
cp - memory copy
cmp - memory compare
crc32 - checksum calculation
-imd - i2c memory display
-imm - i2c memory modify (auto-incrementing)
-inm - i2c memory modify (constant address)
-imw - i2c memory write (fill)
-icrc32 - i2c checksum calculation
-iprobe - probe to discover valid I2C chip addresses
-iloop - infinite loop on address range
-isdram - print SDRAM configuration information
+i2c - I2C sub-system
sspi - SPI utility commands
base - print or set address offset
printenv- print environment variables
addr = simple_strtol (argv[1], NULL, 16);
- printf("iprobe looping on addr 0x%lx (cntrl-c aborts)...\n", addr);
+ printf("i2c probe looping on addr 0x%lx (cntrl-c aborts)...\n", addr);
for (;;) {
i2c_probe(addr);
}
U_BOOT_CMD(
iploop, 2, 1, do_iploop,
- "iprobe loop <addr>",
+ "i
2c probe loop <addr>",
NULL
);
* There are several parameters in many of the commands that bear further
* explanations:
*
- * Two of the commands (imm and imw) take a byte/word/long modifier
- * (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.
- *
* {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"
* {addr} field (since .1 is the default, it doesn't actually have to
* be specified). Examples: given a memory chip at I2C chip address
* 0x50, the following would happen...
- * imd 50 0 10 display 16 bytes starting at 0x000
+ * i2c md 50 0 10 display 16 bytes starting at 0x000
* On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd>
- * imd 50 100 10 display 16 bytes starting at 0x100
+ * i2c md 50 100 10 display 16 bytes starting at 0x100
* On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd>
- * imd 50 210 10 display 16 bytes starting at 0x210
+ * i2c md 50 210 10 display 16 bytes starting at 0x210
* On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd>
* This is awfully ugly. It would be nice if someone would think up
* a better way of handling this.
/*
* Syntax:
- * imd {i2c_chip} {addr}{.0, .1, .2} {len}
+ * i2c md {i2c_chip} {addr}{.0, .1, .2} {len}
*/
#define DISP_LINE_LEN 16
/* Write (fill) memory
*
* Syntax:
- * imw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
+ * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
*/
int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
/* Calculate a CRC on memory
*
* Syntax:
- * icrc32 {i2c_chip} {addr}{.0, .1, .2} {count}
+ * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count}
*/
int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
/* Modify memory.
*
* Syntax:
- * imm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
- * inm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
+ * i2c mm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
+ * i2c nm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
*/
static int
/*
* Syntax:
- * iprobe {addr}{.0, .1, .2}
+ * i2c probe {addr}{.0, .1, .2}
*/
int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
/*
* Syntax:
- * iloop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
+ * i2c loop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
* {length} - Number of bytes to read
* {delay} - A DECIMAL number and defaults to 1000 uSec
*/
/*
* Syntax:
- * sdram {i2c_chip}
+ * i2c sdram {i2c_chip}
*/
int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
All others are factory default.
-I2C iprobe
+I2C probe
=====================
The i2c utilities have been tested on both Rev B. and Rev C. and
look good. The CONFIG_SYS_I2C_NOPROBES macro is defined to prevent
probing the CDCV850 clock controller at address 0x69 (since reading
it causes the i2c implementation to misbehave. The output of
-iprobe should look like this (assuming you are only using a single
+'i2c probe' should look like this (assuming you are only using a single
SO-DIMM:
-=> iprobe
+=> i2c probe
Valid chip addresses: 50 53 54
Excluded chip addresses: 69
This will select the default sys0 and sys1 settings (the serial
eeproms are not used). Then power up the board and fix the serial
-eeprom using the imm command. Here are the values I currently
+eeprom using the 'i2c mm' command. Here are the values I currently
use:
-=> imd 50 0 10
+=> i2c md 50 0 10
0000: bf a2 04 01 ae 94 11 00 00 00 00 00 00 00 00 00 ................
-=> imd 54 0 10
+=> i2c md 54 0 10
0000: 8f b3 24 01 4d 14 11 00 00 00 00 00 00 00 00 00 ..$.M...........
Once you have the eeproms set correctly change the
eeprom is corrupted, U-Boot will never get into ram. Here's how I got
out of this situation:
-0. First, _before_ playing with the i2c utilities, do an iprobe, then
-use imd to capture the various device contents to a file. Some day
+0. First, _before_ playing with the i2c utilities, do an 'i2c probe', then
+use 'i2c md' to capture the various device contents to a file. Some day
you may be glad you did this ... trust me :-). Otherwise try the
following:
3. Load the new U-Boot image and reboot ebony.
-4. Repair the SPD eeprom using the imm command. Here's the eeprom
+4. Repair the SPD eeprom using the 'i2c mm' command. Here's the eeprom
contents that work with the default SO-DIMM that comes with the
ebony board (micron 8VDDT164AG-265A1). Note: these are probably
_not_ the factory settings ... but they work.
-=> imd 53 0 10 80
+=> i2c md 53 0 10 80
0000: 80 08 07 0c 0a 01 40 00 04 75 75 00 80 08 00 01 ......@..uu.....
0010: 0e 04 0c 01 02 20 00 a0 75 00 00 50 3c 50 2d 20 ..... ..u..P<P-
0020: 90 90 50 50 00 00 00 00 00 41 4b 34 32 75 00 00 ..PP.....AK42u..
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
+i2c - I2C sub-system
icache - enable or disable instruction cache
-icrc32 - checksum calculation
-iloop - infinite loop on address range
-imd - i2c memory display
iminfo - print header information for application image
imls - list all images found in flash
-imm - i2c memory modify (auto-incrementing)
-imw - memory write (fill)
-inm - memory modify (constant address)
-iprobe - probe to discover valid I2C chip addresses
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
+i2c - I2C sub-system
icache - enable or disable instruction cache
-icrc32 - checksum calculation
-iloop - infinite loop on address range
-imd - i2c memory display
iminfo - print header information for application image
imls - list all images found in flash
-imm - i2c memory modify (auto-incrementing)
-imw - memory write (fill)
-inm - memory modify (constant address)
-iprobe - probe to discover valid I2C chip addresses
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
fsload - load binary file from a filesystem image
go - start application at address 'addr'
help - print online help
+i2c - I2C sub-system
icache - enable or disable instruction cache
-icrc32 - checksum calculation
ide - IDE sub-system
-iloop - infinite loop on address range
-imd - i2c memory display
iminfo - print header information for application image
imls - list all images found in flash
-imm - i2c memory modify (auto-incrementing)
-imw - memory write (fill)
-inm - memory modify (constant address)
-iprobe - probe to discover valid I2C chip addresses
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
+i2c - I2C sub-system
icache - enable or disable instruction cache
-icrc32 - checksum calculation
-iloop - infinite loop on address range
-imd - i2c memory display
iminfo - print header information for application image
imls - list all images found in flash
-imm - i2c memory modify (auto-incrementing)
-imw - memory write (fill)
-inm - memory modify (constant address)
-iprobe - probe to discover valid I2C chip addresses
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
=================
The i2c utilities have been tested on both Rev B. and Rev C. and
-look good. The iprobe command implementation has been updated to
+look good. The 'i2c probe' command implementation has been updated to
allow for 'skipped' addresses. Some i2c slaves are write only and
cause problems when a probe (read) is performed (for example the
CDCV850 clock controller at address 0x69 on the ebony board).
CONFIG_SYS_I2C_NOPROBES macro in your board-specific header file. When
defined, all specified addresses are skipped during a probe.
The addresses that are skipped will be displayed in the output
-of the iprobe command.
+of the 'i2c probe' command.
For example, to prevent probing address 0x69, define the macro as
follows:
change the 1st page of the EEPROM! Unpopulated jumper J560 can get you
out of trouble as it disables the strapping read from EEPROM.
-I2C iprobe
+I2C probe
=====================
The i2c utilities work and have been tested on Rev B. of the 440GX. See
This will select the default sys0 and sys1 settings (the serial
eeproms are not used). Then power up the board and fix the serial
-eeprom using the imm command. Here are the values I currently
+eeprom using the 'i2c mm' command. Here are the values I currently
use:
-=> imd 50 0 10
+=> i2c md 50 0 10
0000: 85 7d 42 06 07 80 11 00 00 00 00 00 00 00 00 00 .}B.............
* chip_addr: I2C chip address, range 0..127
* (to read from SPD channel EEPROM use (0xD0 ... 0xD7)
* NOTE: The bit 7 in the chip_addr serves as a channel select.
- * This hack is for enabling "isdram" command on Tsi108 boards
+ * This hack is for enabling "i2c sdram" command on Tsi108 boards
* without changes to common code. Used for I2C reads only.
* byte_addr: Memory or register address within the chip
* alen: Number of bytes to use for addr (typically 1, 2 for larger
*/
#define CONFIG_SYS_I2C_SPEED 400000 /* I2C speed and slave address */
-#define CONFIG_SYS_I2C_NOPROBES { 0x69 } /* avoid iprobe hangup (why?) */
+#define CONFIG_SYS_I2C_NOPROBES { 0x69 } /* avoid i2c probe hangup (why?) */
#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 6 /* 24C02 requires 5ms delay */
#if defined(CONFIG_CMD_EEPROM)
"echo hostname ${hostname}\0" \
"ana=run adc ; run dac\0" \
"adc=run adc-12 ; run adc-34\0" \
-"adc-12=echo ### ADC-12 ; imd.b e 81 e\0" \
-"adc-34=echo ### ADC-34 ; imd.b f 81 e\0" \
-"dac=echo ### DAC ; imd.b 11 81 5\0" \
+"adc-12=echo ### ADC-12 ; i2c md e 81 e\0" \
+"adc-34=echo ### ADC-34 ; i2c md f 81 e\0" \
+"dac=echo ### DAC ; i2c md 11 81 5\0" \
"boot-hook=echo\0"
/* What should the console's baud rate be? */
*/
#define CONFIG_SYS_I2C_SPEED 400000 /* I2C speed and slave address */
-#define CONFIG_SYS_I2C_NOPROBES { 0x69 } /* avoid iprobe hangup (why?) */
+#define CONFIG_SYS_I2C_NOPROBES { 0x69 } /* avoid i2c probe hangup (why?) */
#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 6 /* 24C02 requires 5ms delay */
#define CONFIG_SYS_I2C_EEPROM_ADDR 0x50 /* I2C boot EEPROM (24C02W) */
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