| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * (C) Copyright 2009 |
| * Sergey Kubushyn, himself, ksi@koi8.net |
| * |
| * Changes for unified multibus/multiadapter I2C support. |
| * |
| * (C) Copyright 2001 |
| * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com. |
| */ |
| |
| /* |
| * I2C Functions similar to the standard memory functions. |
| * |
| * There are several parameters in many of the commands that bear further |
| * explanations: |
| * |
| * {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 :-/. |
| * |
| * {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 |
| * as the register index. Some non-memory chips have only one register |
| * 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. |
| * |
| * You can specify the length of the {addr} field with the optional .0, |
| * .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are |
| * manipulating a single register device which doesn't use an address |
| * field, use "0.0" for the address and the ".0" length field will |
| * suppress the address in the I2C data stream. This also works for |
| * successive reads using the I2C auto-incrementing memory pointer. |
| * |
| * If you are manipulating a large memory with 2-byte addresses, use |
| * the .2 address modifier, e.g. 210.2 addresses location 528 (decimal). |
| * |
| * 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 |
| * CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the |
| * {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... |
| * i2c md 50 0 10 display 16 bytes starting at 0x000 |
| * On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd> |
| * i2c md 50 100 10 display 16 bytes starting at 0x100 |
| * On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd> |
| * 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. |
| * |
| * Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de). |
| */ |
| |
| #include <common.h> |
| #include <bootretry.h> |
| #include <cli.h> |
| #include <command.h> |
| #include <console.h> |
| #include <dm.h> |
| #include <edid.h> |
| #include <environment.h> |
| #include <errno.h> |
| #include <i2c.h> |
| #include <malloc.h> |
| #include <asm/byteorder.h> |
| #include <linux/compiler.h> |
| |
| /* Display values from last command. |
| * Memory modify remembered values are different from display memory. |
| */ |
| static uint i2c_dp_last_chip; |
| static uint i2c_dp_last_addr; |
| static uint i2c_dp_last_alen; |
| static uint i2c_dp_last_length = 0x10; |
| |
| static uint i2c_mm_last_chip; |
| static uint i2c_mm_last_addr; |
| static uint i2c_mm_last_alen; |
| |
| /* If only one I2C bus is present, the list of devices to ignore when |
| * the probe command is issued is represented by a 1D array of addresses. |
| * When multiple buses are present, the list is an array of bus-address |
| * pairs. The following macros take care of this */ |
| |
| #if defined(CONFIG_SYS_I2C_NOPROBES) |
| #if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) |
| static struct |
| { |
| uchar bus; |
| uchar addr; |
| } i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES; |
| #define GET_BUS_NUM i2c_get_bus_num() |
| #define COMPARE_BUS(b,i) (i2c_no_probes[(i)].bus == (b)) |
| #define COMPARE_ADDR(a,i) (i2c_no_probes[(i)].addr == (a)) |
| #define NO_PROBE_ADDR(i) i2c_no_probes[(i)].addr |
| #else /* single bus */ |
| static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES; |
| #define GET_BUS_NUM 0 |
| #define COMPARE_BUS(b,i) ((b) == 0) /* Make compiler happy */ |
| #define COMPARE_ADDR(a,i) (i2c_no_probes[(i)] == (a)) |
| #define NO_PROBE_ADDR(i) i2c_no_probes[(i)] |
| #endif /* defined(CONFIG_SYS_I2C) */ |
| #endif |
| |
| #define DISP_LINE_LEN 16 |
| |
| /* |
| * Default for driver model is to use the chip's existing address length. |
| * For legacy code, this is not stored, so we need to use a suitable |
| * default. |
| */ |
| #ifdef CONFIG_DM_I2C |
| #define DEFAULT_ADDR_LEN (-1) |
| #else |
| #define DEFAULT_ADDR_LEN 1 |
| #endif |
| |
| #ifdef CONFIG_DM_I2C |
| static struct udevice *i2c_cur_bus; |
| |
| static int cmd_i2c_set_bus_num(unsigned int busnum) |
| { |
| struct udevice *bus; |
| int ret; |
| |
| ret = uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus); |
| if (ret) { |
| debug("%s: No bus %d\n", __func__, busnum); |
| return ret; |
| } |
| i2c_cur_bus = bus; |
| |
| return 0; |
| } |
| |
| static int i2c_get_cur_bus(struct udevice **busp) |
| { |
| #ifdef CONFIG_I2C_SET_DEFAULT_BUS_NUM |
| if (!i2c_cur_bus) { |
| if (cmd_i2c_set_bus_num(CONFIG_I2C_DEFAULT_BUS_NUMBER)) { |
| printf("Default I2C bus %d not found\n", |
| CONFIG_I2C_DEFAULT_BUS_NUMBER); |
| return -ENODEV; |
| } |
| } |
| #endif |
| |
| if (!i2c_cur_bus) { |
| puts("No I2C bus selected\n"); |
| return -ENODEV; |
| } |
| *busp = i2c_cur_bus; |
| |
| return 0; |
| } |
| |
| static int i2c_get_cur_bus_chip(uint chip_addr, struct udevice **devp) |
| { |
| struct udevice *bus; |
| int ret; |
| |
| ret = i2c_get_cur_bus(&bus); |
| if (ret) |
| return ret; |
| |
| return i2c_get_chip(bus, chip_addr, 1, devp); |
| } |
| |
| #endif |
| |
| /** |
| * i2c_init_board() - Board-specific I2C bus init |
| * |
| * This function is the default no-op implementation of I2C bus |
| * initialization. This function can be overridden by board-specific |
| * implementation if needed. |
| */ |
| __weak |
| void i2c_init_board(void) |
| { |
| } |
| |
| /* TODO: Implement architecture-specific get/set functions */ |
| |
| /** |
| * i2c_get_bus_speed() - Return I2C bus speed |
| * |
| * This function is the default implementation of function for retrieveing |
| * the current I2C bus speed in Hz. |
| * |
| * A driver implementing runtime switching of I2C bus speed must override |
| * this function to report the speed correctly. Simple or legacy drivers |
| * can use this fallback. |
| * |
| * Returns I2C bus speed in Hz. |
| */ |
| #if !defined(CONFIG_SYS_I2C) && !defined(CONFIG_DM_I2C) |
| /* |
| * TODO: Implement architecture-specific get/set functions |
| * Should go away, if we switched completely to new multibus support |
| */ |
| __weak |
| unsigned int i2c_get_bus_speed(void) |
| { |
| return CONFIG_SYS_I2C_SPEED; |
| } |
| |
| /** |
| * i2c_set_bus_speed() - Configure I2C bus speed |
| * @speed: Newly set speed of the I2C bus in Hz |
| * |
| * This function is the default implementation of function for setting |
| * the I2C bus speed in Hz. |
| * |
| * A driver implementing runtime switching of I2C bus speed must override |
| * this function to report the speed correctly. Simple or legacy drivers |
| * can use this fallback. |
| * |
| * Returns zero on success, negative value on error. |
| */ |
| __weak |
| int i2c_set_bus_speed(unsigned int speed) |
| { |
| if (speed != CONFIG_SYS_I2C_SPEED) |
| return -1; |
| |
| return 0; |
| } |
| #endif |
| |
| /** |
| * get_alen() - Small parser helper function to get address length |
| * |
| * Returns the address length. |
| */ |
| static uint get_alen(char *arg, int default_len) |
| { |
| int j; |
| int alen; |
| |
| alen = default_len; |
| for (j = 0; j < 8; j++) { |
| if (arg[j] == '.') { |
| alen = arg[j+1] - '0'; |
| break; |
| } else if (arg[j] == '\0') |
| break; |
| } |
| return alen; |
| } |
| |
| enum i2c_err_op { |
| I2C_ERR_READ, |
| I2C_ERR_WRITE, |
| }; |
| |
| static int i2c_report_err(int ret, enum i2c_err_op op) |
| { |
| printf("Error %s the chip: %d\n", |
| op == I2C_ERR_READ ? "reading" : "writing", ret); |
| |
| return CMD_RET_FAILURE; |
| } |
| |
| /** |
| * do_i2c_read() - Handle the "i2c read" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * i2c read {i2c_chip} {devaddr}{.0, .1, .2} {len} {memaddr} |
| */ |
| static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| uint chip; |
| uint devaddr, length; |
| int alen; |
| u_char *memaddr; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| if (argc != 5) |
| return CMD_RET_USAGE; |
| |
| /* |
| * I2C chip address |
| */ |
| chip = simple_strtoul(argv[1], NULL, 16); |
| |
| /* |
| * I2C data address within the chip. This can be 1 or |
| * 2 bytes long. Some day it might be 3 bytes long :-). |
| */ |
| devaddr = simple_strtoul(argv[2], NULL, 16); |
| alen = get_alen(argv[2], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return CMD_RET_USAGE; |
| |
| /* |
| * Length is the number of objects, not number of bytes. |
| */ |
| length = simple_strtoul(argv[3], NULL, 16); |
| |
| /* |
| * memaddr is the address where to store things in memory |
| */ |
| memaddr = (u_char *)simple_strtoul(argv[4], NULL, 16); |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (!ret) |
| ret = dm_i2c_read(dev, devaddr, memaddr, length); |
| #else |
| ret = i2c_read(chip, devaddr, alen, memaddr, length); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| return 0; |
| } |
| |
| static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| uint chip; |
| uint devaddr, length; |
| int alen; |
| u_char *memaddr; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| struct dm_i2c_chip *i2c_chip; |
| #endif |
| |
| if ((argc < 5) || (argc > 6)) |
| return cmd_usage(cmdtp); |
| |
| /* |
| * memaddr is the address where to store things in memory |
| */ |
| memaddr = (u_char *)simple_strtoul(argv[1], NULL, 16); |
| |
| /* |
| * I2C chip address |
| */ |
| chip = simple_strtoul(argv[2], NULL, 16); |
| |
| /* |
| * I2C data address within the chip. This can be 1 or |
| * 2 bytes long. Some day it might be 3 bytes long :-). |
| */ |
| devaddr = simple_strtoul(argv[3], NULL, 16); |
| alen = get_alen(argv[3], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return cmd_usage(cmdtp); |
| |
| /* |
| * Length is the number of bytes. |
| */ |
| length = simple_strtoul(argv[4], NULL, 16); |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| i2c_chip = dev_get_parent_platdata(dev); |
| if (!i2c_chip) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| #endif |
| |
| if (argc == 6 && !strcmp(argv[5], "-s")) { |
| /* |
| * Write all bytes in a single I2C transaction. If the target |
| * device is an EEPROM, it is your responsibility to not cross |
| * a page boundary. No write delay upon completion, take this |
| * into account if linking commands. |
| */ |
| #ifdef CONFIG_DM_I2C |
| i2c_chip->flags &= ~DM_I2C_CHIP_WR_ADDRESS; |
| ret = dm_i2c_write(dev, devaddr, memaddr, length); |
| #else |
| ret = i2c_write(chip, devaddr, alen, memaddr, length); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| } else { |
| /* |
| * Repeated addressing - perform <length> separate |
| * write transactions of one byte each |
| */ |
| while (length-- > 0) { |
| #ifdef CONFIG_DM_I2C |
| i2c_chip->flags |= DM_I2C_CHIP_WR_ADDRESS; |
| ret = dm_i2c_write(dev, devaddr++, memaddr++, 1); |
| #else |
| ret = i2c_write(chip, devaddr++, alen, memaddr++, 1); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| /* |
| * No write delay with FRAM devices. |
| */ |
| #if !defined(CONFIG_SYS_I2C_FRAM) |
| udelay(11000); |
| #endif |
| } |
| } |
| return 0; |
| } |
| |
| #ifdef CONFIG_DM_I2C |
| static int do_i2c_flags(cmd_tbl_t *cmdtp, int flag, int argc, |
| char *const argv[]) |
| { |
| struct udevice *dev; |
| uint flags; |
| int chip; |
| int ret; |
| |
| if (argc < 2) |
| return CMD_RET_USAGE; |
| |
| chip = simple_strtoul(argv[1], NULL, 16); |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| if (argc > 2) { |
| flags = simple_strtoul(argv[2], NULL, 16); |
| ret = i2c_set_chip_flags(dev, flags); |
| } else { |
| ret = i2c_get_chip_flags(dev, &flags); |
| if (!ret) |
| printf("%x\n", flags); |
| } |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| return 0; |
| } |
| |
| static int do_i2c_olen(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) |
| { |
| struct udevice *dev; |
| uint olen; |
| int chip; |
| int ret; |
| |
| if (argc < 2) |
| return CMD_RET_USAGE; |
| |
| chip = simple_strtoul(argv[1], NULL, 16); |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| if (argc > 2) { |
| olen = simple_strtoul(argv[2], NULL, 16); |
| ret = i2c_set_chip_offset_len(dev, olen); |
| } else { |
| ret = i2c_get_chip_offset_len(dev); |
| if (ret >= 0) { |
| printf("%x\n", ret); |
| ret = 0; |
| } |
| } |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| return 0; |
| } |
| #endif |
| |
| /** |
| * do_i2c_md() - Handle the "i2c md" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * i2c md {i2c_chip} {addr}{.0, .1, .2} {len} |
| */ |
| static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| uint chip; |
| uint addr, length; |
| int alen; |
| int j, nbytes, linebytes; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| /* We use the last specified parameters, unless new ones are |
| * entered. |
| */ |
| chip = i2c_dp_last_chip; |
| addr = i2c_dp_last_addr; |
| alen = i2c_dp_last_alen; |
| length = i2c_dp_last_length; |
| |
| if (argc < 3) |
| return CMD_RET_USAGE; |
| |
| if ((flag & CMD_FLAG_REPEAT) == 0) { |
| /* |
| * New command specified. |
| */ |
| |
| /* |
| * I2C chip address |
| */ |
| chip = simple_strtoul(argv[1], NULL, 16); |
| |
| /* |
| * I2C data address within the chip. This can be 1 or |
| * 2 bytes long. Some day it might be 3 bytes long :-). |
| */ |
| addr = simple_strtoul(argv[2], NULL, 16); |
| alen = get_alen(argv[2], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return CMD_RET_USAGE; |
| |
| /* |
| * If another parameter, it is the length to display. |
| * Length is the number of objects, not number of bytes. |
| */ |
| if (argc > 3) |
| length = simple_strtoul(argv[3], NULL, 16); |
| } |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| #endif |
| |
| /* |
| * Print the lines. |
| * |
| * We buffer all read data, so we can make sure data is read only |
| * once. |
| */ |
| nbytes = length; |
| do { |
| unsigned char linebuf[DISP_LINE_LEN]; |
| unsigned char *cp; |
| |
| linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes; |
| |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_read(dev, addr, linebuf, linebytes); |
| #else |
| ret = i2c_read(chip, addr, alen, linebuf, linebytes); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| else { |
| printf("%04x:", addr); |
| cp = linebuf; |
| for (j=0; j<linebytes; j++) { |
| printf(" %02x", *cp++); |
| addr++; |
| } |
| puts (" "); |
| cp = linebuf; |
| for (j=0; j<linebytes; j++) { |
| if ((*cp < 0x20) || (*cp > 0x7e)) |
| puts ("."); |
| else |
| printf("%c", *cp); |
| cp++; |
| } |
| putc ('\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; |
| } |
| |
| /** |
| * do_i2c_mw() - Handle the "i2c mw" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}] |
| */ |
| static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| uint chip; |
| ulong addr; |
| int alen; |
| uchar byte; |
| int count; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| if ((argc < 4) || (argc > 5)) |
| return CMD_RET_USAGE; |
| |
| /* |
| * Chip is always specified. |
| */ |
| chip = simple_strtoul(argv[1], NULL, 16); |
| |
| /* |
| * Address is always specified. |
| */ |
| addr = simple_strtoul(argv[2], NULL, 16); |
| alen = get_alen(argv[2], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return CMD_RET_USAGE; |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| #endif |
| /* |
| * 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) { |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_write(dev, addr++, &byte, 1); |
| #else |
| ret = i2c_write(chip, addr++, alen, &byte, 1); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| /* |
| * Wait for the write to complete. The write can take |
| * up to 10mSec (we allow a little more time). |
| */ |
| /* |
| * No write delay with FRAM devices. |
| */ |
| #if !defined(CONFIG_SYS_I2C_FRAM) |
| udelay(11000); |
| #endif |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * do_i2c_crc() - Handle the "i2c crc32" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Calculate a CRC on memory |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count} |
| */ |
| static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| uint chip; |
| ulong addr; |
| int alen; |
| int count; |
| uchar byte; |
| ulong crc; |
| ulong err; |
| int ret = 0; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| if (argc < 4) |
| return CMD_RET_USAGE; |
| |
| /* |
| * Chip is always specified. |
| */ |
| chip = simple_strtoul(argv[1], NULL, 16); |
| |
| /* |
| * Address is always specified. |
| */ |
| addr = simple_strtoul(argv[2], NULL, 16); |
| alen = get_alen(argv[2], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return CMD_RET_USAGE; |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| #endif |
| /* |
| * 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) { |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_read(dev, addr, &byte, 1); |
| #else |
| ret = i2c_read(chip, addr, alen, &byte, 1); |
| #endif |
| if (ret) |
| err++; |
| crc = crc32 (crc, &byte, 1); |
| addr++; |
| } |
| if (err > 0) |
| i2c_report_err(ret, I2C_ERR_READ); |
| else |
| printf ("%08lx\n", crc); |
| |
| return 0; |
| } |
| |
| /** |
| * mod_i2c_mem() - Handle the "i2c mm" and "i2c nm" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Modify memory. |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * i2c mm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2} |
| * i2c nm{.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 * const argv[]) |
| { |
| uint chip; |
| ulong addr; |
| int alen; |
| ulong data; |
| int size = 1; |
| int nbytes; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| if (argc != 3) |
| return CMD_RET_USAGE; |
| |
| bootretry_reset_cmd_timeout(); /* got a good command to get here */ |
| /* |
| * 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 = get_alen(argv[2], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return CMD_RET_USAGE; |
| } |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| #endif |
| |
| /* |
| * Print the address, followed by value. Then accept input for |
| * the next value. A non-converted value exits. |
| */ |
| do { |
| printf("%08lx:", addr); |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_read(dev, addr, (uchar *)&data, size); |
| #else |
| ret = i2c_read(chip, addr, alen, (uchar *)&data, size); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| 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 = cli_readline(" ? "); |
| if (nbytes == 0) { |
| /* |
| * <CR> pressed as only input, don't modify current |
| * location and move to next. |
| */ |
| if (incrflag) |
| addr += size; |
| nbytes = size; |
| /* good enough to not time out */ |
| bootretry_reset_cmd_timeout(); |
| } |
| #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) { |
| /* |
| * good enough to not time out |
| */ |
| bootretry_reset_cmd_timeout(); |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_write(dev, addr, (uchar *)&data, |
| size); |
| #else |
| ret = i2c_write(chip, addr, alen, |
| (uchar *)&data, size); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, |
| I2C_ERR_WRITE); |
| #ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS |
| udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000); |
| #endif |
| if (incrflag) |
| addr += size; |
| } |
| } |
| } while (nbytes); |
| |
| i2c_mm_last_chip = chip; |
| i2c_mm_last_addr = addr; |
| i2c_mm_last_alen = alen; |
| |
| return 0; |
| } |
| |
| /** |
| * do_i2c_probe() - Handle the "i2c probe" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * i2c probe {addr} |
| * |
| * Returns zero (success) if one or more I2C devices was found |
| */ |
| static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| int j; |
| int addr = -1; |
| int found = 0; |
| #if defined(CONFIG_SYS_I2C_NOPROBES) |
| int k, skip; |
| unsigned int bus = GET_BUS_NUM; |
| #endif /* NOPROBES */ |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *bus, *dev; |
| |
| if (i2c_get_cur_bus(&bus)) |
| return CMD_RET_FAILURE; |
| #endif |
| |
| if (argc == 2) |
| addr = simple_strtol(argv[1], 0, 16); |
| |
| puts ("Valid chip addresses:"); |
| for (j = 0; j < 128; j++) { |
| if ((0 <= addr) && (j != addr)) |
| continue; |
| |
| #if defined(CONFIG_SYS_I2C_NOPROBES) |
| skip = 0; |
| for (k = 0; k < ARRAY_SIZE(i2c_no_probes); k++) { |
| if (COMPARE_BUS(bus, k) && COMPARE_ADDR(j, k)) { |
| skip = 1; |
| break; |
| } |
| } |
| if (skip) |
| continue; |
| #endif |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_probe(bus, j, 0, &dev); |
| #else |
| ret = i2c_probe(j); |
| #endif |
| if (ret == 0) { |
| printf(" %02X", j); |
| found++; |
| } |
| } |
| putc ('\n'); |
| |
| #if defined(CONFIG_SYS_I2C_NOPROBES) |
| puts ("Excluded chip addresses:"); |
| for (k = 0; k < ARRAY_SIZE(i2c_no_probes); k++) { |
| if (COMPARE_BUS(bus,k)) |
| printf(" %02X", NO_PROBE_ADDR(k)); |
| } |
| putc ('\n'); |
| #endif |
| |
| return (0 == found); |
| } |
| |
| /** |
| * do_i2c_loop() - Handle the "i2c loop" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| * |
| * Syntax: |
| * 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 |
| */ |
| static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| uint chip; |
| int alen; |
| uint addr; |
| uint length; |
| u_char bytes[16]; |
| int delay; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| if (argc < 3) |
| return CMD_RET_USAGE; |
| |
| /* |
| * Chip is always specified. |
| */ |
| chip = simple_strtoul(argv[1], NULL, 16); |
| |
| /* |
| * Address is always specified. |
| */ |
| addr = simple_strtoul(argv[2], NULL, 16); |
| alen = get_alen(argv[2], DEFAULT_ADDR_LEN); |
| if (alen > 3) |
| return CMD_RET_USAGE; |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret && alen != -1) |
| ret = i2c_set_chip_offset_len(dev, alen); |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_WRITE); |
| #endif |
| |
| /* |
| * 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) { |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_read(dev, addr, bytes, length); |
| #else |
| ret = i2c_read(chip, addr, alen, bytes, length); |
| #endif |
| if (ret) |
| i2c_report_err(ret, I2C_ERR_READ); |
| udelay(delay); |
| } |
| |
| /* NOTREACHED */ |
| return 0; |
| } |
| |
| /* |
| * The SDRAM command is separately configured because many |
| * (most?) embedded boards don't use SDRAM DIMMs. |
| * |
| * FIXME: Document and probably move elsewhere! |
| */ |
| #if defined(CONFIG_CMD_SDRAM) |
| static void print_ddr2_tcyc (u_char const b) |
| { |
| printf ("%d.", (b >> 4) & 0x0F); |
| switch (b & 0x0F) { |
| case 0x0: |
| case 0x1: |
| case 0x2: |
| case 0x3: |
| case 0x4: |
| case 0x5: |
| case 0x6: |
| case 0x7: |
| case 0x8: |
| case 0x9: |
| printf ("%d ns\n", b & 0x0F); |
| break; |
| case 0xA: |
| puts ("25 ns\n"); |
| break; |
| case 0xB: |
| puts ("33 ns\n"); |
| break; |
| case 0xC: |
| puts ("66 ns\n"); |
| break; |
| case 0xD: |
| puts ("75 ns\n"); |
| break; |
| default: |
| puts ("?? ns\n"); |
| break; |
| } |
| } |
| |
| static void decode_bits (u_char const b, char const *str[], int const do_once) |
| { |
| u_char mask; |
| |
| for (mask = 0x80; mask != 0x00; mask >>= 1, ++str) { |
| if (b & mask) { |
| puts (*str); |
| if (do_once) |
| return; |
| } |
| } |
| } |
| |
| /* |
| * Syntax: |
| * i2c sdram {i2c_chip} |
| */ |
| static int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) |
| { |
| enum { unknown, EDO, SDRAM, DDR, DDR2, DDR3, DDR4 } type; |
| |
| uint chip; |
| u_char data[128]; |
| u_char cksum; |
| int j, ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| static const char *decode_CAS_DDR2[] = { |
| " TBD", " 6", " 5", " 4", " 3", " 2", " TBD", " TBD" |
| }; |
| |
| static const char *decode_CAS_default[] = { |
| " TBD", " 7", " 6", " 5", " 4", " 3", " 2", " 1" |
| }; |
| |
| static const char *decode_CS_WE_default[] = { |
| " TBD", " 6", " 5", " 4", " 3", " 2", " 1", " 0" |
| }; |
| |
| static const char *decode_byte21_default[] = { |
| " TBD (bit 7)\n", |
| " Redundant row address\n", |
| " Differential clock input\n", |
| " Registerd DQMB inputs\n", |
| " Buffered DQMB inputs\n", |
| " On-card PLL\n", |
| " Registered address/control lines\n", |
| " Buffered address/control lines\n" |
| }; |
| |
| static const char *decode_byte22_DDR2[] = { |
| " TBD (bit 7)\n", |
| " TBD (bit 6)\n", |
| " TBD (bit 5)\n", |
| " TBD (bit 4)\n", |
| " TBD (bit 3)\n", |
| " Supports partial array self refresh\n", |
| " Supports 50 ohm ODT\n", |
| " Supports weak driver\n" |
| }; |
| |
| static const char *decode_row_density_DDR2[] = { |
| "512 MiB", "256 MiB", "128 MiB", "16 GiB", |
| "8 GiB", "4 GiB", "2 GiB", "1 GiB" |
| }; |
| |
| static const char *decode_row_density_default[] = { |
| "512 MiB", "256 MiB", "128 MiB", "64 MiB", |
| "32 MiB", "16 MiB", "8 MiB", "4 MiB" |
| }; |
| |
| if (argc < 2) |
| return CMD_RET_USAGE; |
| |
| /* |
| * Chip is always specified. |
| */ |
| chip = simple_strtoul (argv[1], NULL, 16); |
| |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret) |
| ret = dm_i2c_read(dev, 0, data, sizeof(data)); |
| #else |
| ret = i2c_read(chip, 0, 1, data, sizeof(data)); |
| #endif |
| if (ret) { |
| puts ("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]); |
| |
| puts ("Memory type "); |
| switch (data[2]) { |
| case 2: |
| type = EDO; |
| puts ("EDO\n"); |
| break; |
| case 4: |
| type = SDRAM; |
| puts ("SDRAM\n"); |
| break; |
| case 7: |
| type = DDR; |
| puts("DDR\n"); |
| break; |
| case 8: |
| type = DDR2; |
| puts ("DDR2\n"); |
| break; |
| case 11: |
| type = DDR3; |
| puts("DDR3\n"); |
| break; |
| case 12: |
| type = DDR4; |
| puts("DDR4\n"); |
| break; |
| default: |
| type = unknown; |
| puts ("unknown\n"); |
| break; |
| } |
| |
| puts ("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); |
| |
| puts ("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); |
| |
| switch (type) { |
| case DDR2: |
| printf ("Number of ranks %d\n", |
| (data[5] & 0x07) + 1); |
| break; |
| default: |
| printf ("Module rows %d\n", data[5]); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("Module data width %d bits\n", data[6]); |
| break; |
| default: |
| printf ("Module data width %d bits\n", |
| (data[7] << 8) | data[6]); |
| break; |
| } |
| |
| puts ("Interface signal levels "); |
| switch(data[8]) { |
| case 0: puts ("TTL 5.0 V\n"); break; |
| case 1: puts ("LVTTL\n"); break; |
| case 2: puts ("HSTL 1.5 V\n"); break; |
| case 3: puts ("SSTL 3.3 V\n"); break; |
| case 4: puts ("SSTL 2.5 V\n"); break; |
| case 5: puts ("SSTL 1.8 V\n"); break; |
| default: puts ("unknown\n"); break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM cycle time "); |
| print_ddr2_tcyc (data[9]); |
| break; |
| default: |
| printf ("SDRAM cycle time %d.%d ns\n", |
| (data[9] >> 4) & 0x0F, data[9] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM access time 0.%d%d ns\n", |
| (data[10] >> 4) & 0x0F, data[10] & 0x0F); |
| break; |
| default: |
| printf ("SDRAM access time %d.%d ns\n", |
| (data[10] >> 4) & 0x0F, data[10] & 0x0F); |
| break; |
| } |
| |
| puts ("EDC configuration "); |
| switch (data[11]) { |
| case 0: puts ("None\n"); break; |
| case 1: puts ("Parity\n"); break; |
| case 2: puts ("ECC\n"); break; |
| default: puts ("unknown\n"); break; |
| } |
| |
| if ((data[12] & 0x80) == 0) |
| puts ("No self refresh, rate "); |
| else |
| puts ("Self refresh, rate "); |
| |
| switch(data[12] & 0x7F) { |
| case 0: puts ("15.625 us\n"); break; |
| case 1: puts ("3.9 us\n"); break; |
| case 2: puts ("7.8 us\n"); break; |
| case 3: puts ("31.3 us\n"); break; |
| case 4: puts ("62.5 us\n"); break; |
| case 5: puts ("125 us\n"); break; |
| default: puts ("unknown\n"); break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM width (primary) %d\n", data[13]); |
| break; |
| default: |
| printf ("SDRAM width (primary) %d\n", data[13] & 0x7F); |
| if ((data[13] & 0x80) != 0) { |
| printf (" (second bank) %d\n", |
| 2 * (data[13] & 0x7F)); |
| } |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| if (data[14] != 0) |
| printf ("EDC width %d\n", data[14]); |
| break; |
| default: |
| 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)); |
| } |
| } |
| break; |
| } |
| |
| if (DDR2 != type) { |
| printf ("Min clock delay, back-to-back random column addresses " |
| "%d\n", data[15]); |
| } |
| |
| puts ("Burst length(s) "); |
| if (data[16] & 0x80) puts (" Page"); |
| if (data[16] & 0x08) puts (" 8"); |
| if (data[16] & 0x04) puts (" 4"); |
| if (data[16] & 0x02) puts (" 2"); |
| if (data[16] & 0x01) puts (" 1"); |
| putc ('\n'); |
| printf ("Number of banks %d\n", data[17]); |
| |
| switch (type) { |
| case DDR2: |
| puts ("CAS latency(s) "); |
| decode_bits (data[18], decode_CAS_DDR2, 0); |
| putc ('\n'); |
| break; |
| default: |
| puts ("CAS latency(s) "); |
| decode_bits (data[18], decode_CAS_default, 0); |
| putc ('\n'); |
| break; |
| } |
| |
| if (DDR2 != type) { |
| puts ("CS latency(s) "); |
| decode_bits (data[19], decode_CS_WE_default, 0); |
| putc ('\n'); |
| } |
| |
| if (DDR2 != type) { |
| puts ("WE latency(s) "); |
| decode_bits (data[20], decode_CS_WE_default, 0); |
| putc ('\n'); |
| } |
| |
| switch (type) { |
| case DDR2: |
| puts ("Module attributes:\n"); |
| if (data[21] & 0x80) |
| puts (" TBD (bit 7)\n"); |
| if (data[21] & 0x40) |
| puts (" Analysis probe installed\n"); |
| if (data[21] & 0x20) |
| puts (" TBD (bit 5)\n"); |
| if (data[21] & 0x10) |
| puts (" FET switch external enable\n"); |
| printf (" %d PLLs on DIMM\n", (data[21] >> 2) & 0x03); |
| if (data[20] & 0x11) { |
| printf (" %d active registers on DIMM\n", |
| (data[21] & 0x03) + 1); |
| } |
| break; |
| default: |
| puts ("Module attributes:\n"); |
| if (!data[21]) |
| puts (" (none)\n"); |
| else |
| decode_bits (data[21], decode_byte21_default, 0); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| decode_bits (data[22], decode_byte22_DDR2, 0); |
| break; |
| default: |
| puts ("Device attributes:\n"); |
| if (data[22] & 0x80) puts (" TBD (bit 7)\n"); |
| if (data[22] & 0x40) puts (" TBD (bit 6)\n"); |
| if (data[22] & 0x20) puts (" Upper Vcc tolerance 5%\n"); |
| else puts (" Upper Vcc tolerance 10%\n"); |
| if (data[22] & 0x10) puts (" Lower Vcc tolerance 5%\n"); |
| else puts (" Lower Vcc tolerance 10%\n"); |
| if (data[22] & 0x08) puts (" Supports write1/read burst\n"); |
| if (data[22] & 0x04) puts (" Supports precharge all\n"); |
| if (data[22] & 0x02) puts (" Supports auto precharge\n"); |
| if (data[22] & 0x01) puts (" Supports early RAS# precharge\n"); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM cycle time (2nd highest CAS latency) "); |
| print_ddr2_tcyc (data[23]); |
| break; |
| default: |
| printf ("SDRAM cycle time (2nd highest CAS latency) %d." |
| "%d ns\n", (data[23] >> 4) & 0x0F, data[23] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM access from clock (2nd highest CAS latency) 0." |
| "%d%d ns\n", (data[24] >> 4) & 0x0F, data[24] & 0x0F); |
| break; |
| default: |
| printf ("SDRAM access from clock (2nd highest CAS latency) %d." |
| "%d ns\n", (data[24] >> 4) & 0x0F, data[24] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM cycle time (3rd highest CAS latency) "); |
| print_ddr2_tcyc (data[25]); |
| break; |
| default: |
| printf ("SDRAM cycle time (3rd highest CAS latency) %d." |
| "%d ns\n", (data[25] >> 4) & 0x0F, data[25] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("SDRAM access from clock (3rd highest CAS latency) 0." |
| "%d%d ns\n", (data[26] >> 4) & 0x0F, data[26] & 0x0F); |
| break; |
| default: |
| printf ("SDRAM access from clock (3rd highest CAS latency) %d." |
| "%d ns\n", (data[26] >> 4) & 0x0F, data[26] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("Minimum row precharge %d.%02d ns\n", |
| (data[27] >> 2) & 0x3F, 25 * (data[27] & 0x03)); |
| break; |
| default: |
| printf ("Minimum row precharge %d ns\n", data[27]); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("Row active to row active min %d.%02d ns\n", |
| (data[28] >> 2) & 0x3F, 25 * (data[28] & 0x03)); |
| break; |
| default: |
| printf ("Row active to row active min %d ns\n", data[28]); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("RAS to CAS delay min %d.%02d ns\n", |
| (data[29] >> 2) & 0x3F, 25 * (data[29] & 0x03)); |
| break; |
| default: |
| printf ("RAS to CAS delay min %d ns\n", data[29]); |
| break; |
| } |
| |
| printf ("Minimum RAS pulse width %d ns\n", data[30]); |
| |
| switch (type) { |
| case DDR2: |
| puts ("Density of each row "); |
| decode_bits (data[31], decode_row_density_DDR2, 1); |
| putc ('\n'); |
| break; |
| default: |
| puts ("Density of each row "); |
| decode_bits (data[31], decode_row_density_default, 1); |
| putc ('\n'); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| puts ("Command and Address setup "); |
| if (data[32] >= 0xA0) { |
| printf ("1.%d%d ns\n", |
| ((data[32] >> 4) & 0x0F) - 10, data[32] & 0x0F); |
| } else { |
| printf ("0.%d%d ns\n", |
| ((data[32] >> 4) & 0x0F), data[32] & 0x0F); |
| } |
| break; |
| default: |
| printf ("Command and Address setup %c%d.%d ns\n", |
| (data[32] & 0x80) ? '-' : '+', |
| (data[32] >> 4) & 0x07, data[32] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| puts ("Command and Address hold "); |
| if (data[33] >= 0xA0) { |
| printf ("1.%d%d ns\n", |
| ((data[33] >> 4) & 0x0F) - 10, data[33] & 0x0F); |
| } else { |
| printf ("0.%d%d ns\n", |
| ((data[33] >> 4) & 0x0F), data[33] & 0x0F); |
| } |
| break; |
| default: |
| printf ("Command and Address hold %c%d.%d ns\n", |
| (data[33] & 0x80) ? '-' : '+', |
| (data[33] >> 4) & 0x07, data[33] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("Data signal input setup 0.%d%d ns\n", |
| (data[34] >> 4) & 0x0F, data[34] & 0x0F); |
| break; |
| default: |
| printf ("Data signal input setup %c%d.%d ns\n", |
| (data[34] & 0x80) ? '-' : '+', |
| (data[34] >> 4) & 0x07, data[34] & 0x0F); |
| break; |
| } |
| |
| switch (type) { |
| case DDR2: |
| printf ("Data signal input hold 0.%d%d ns\n", |
| (data[35] >> 4) & 0x0F, data[35] & 0x0F); |
| break; |
| default: |
| printf ("Data signal input hold %c%d.%d ns\n", |
| (data[35] & 0x80) ? '-' : '+', |
| (data[35] >> 4) & 0x07, data[35] & 0x0F); |
| break; |
| } |
| |
| puts ("Manufacturer's JEDEC ID "); |
| for (j = 64; j <= 71; j++) |
| printf ("%02X ", data[j]); |
| putc ('\n'); |
| printf ("Manufacturing Location %02X\n", data[72]); |
| puts ("Manufacturer's Part Number "); |
| for (j = 73; j <= 90; j++) |
| printf ("%02X ", data[j]); |
| putc ('\n'); |
| printf ("Revision Code %02X %02X\n", data[91], data[92]); |
| printf ("Manufacturing Date %02X %02X\n", data[93], data[94]); |
| puts ("Assembly Serial Number "); |
| for (j = 95; j <= 98; j++) |
| printf ("%02X ", data[j]); |
| putc ('\n'); |
| |
| if (DDR2 != type) { |
| printf ("Speed rating PC%d\n", |
| data[126] == 0x66 ? 66 : data[126]); |
| } |
| return 0; |
| } |
| #endif |
| |
| /* |
| * Syntax: |
| * i2c edid {i2c_chip} |
| */ |
| #if defined(CONFIG_I2C_EDID) |
| int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) |
| { |
| uint chip; |
| struct edid1_info edid; |
| int ret; |
| #ifdef CONFIG_DM_I2C |
| struct udevice *dev; |
| #endif |
| |
| if (argc < 2) { |
| cmd_usage(cmdtp); |
| return 1; |
| } |
| |
| chip = simple_strtoul(argv[1], NULL, 16); |
| #ifdef CONFIG_DM_I2C |
| ret = i2c_get_cur_bus_chip(chip, &dev); |
| if (!ret) |
| ret = dm_i2c_read(dev, 0, (uchar *)&edid, sizeof(edid)); |
| #else |
| ret = i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid)); |
| #endif |
| if (ret) |
| return i2c_report_err(ret, I2C_ERR_READ); |
| |
| if (edid_check_info(&edid)) { |
| puts("Content isn't valid EDID.\n"); |
| return 1; |
| } |
| |
| edid_print_info(&edid); |
| return 0; |
| |
| } |
| #endif /* CONFIG_I2C_EDID */ |
| |
| #ifdef CONFIG_DM_I2C |
| static void show_bus(struct udevice *bus) |
| { |
| struct udevice *dev; |
| |
| printf("Bus %d:\t%s", bus->req_seq, bus->name); |
| if (device_active(bus)) |
| printf(" (active %d)", bus->seq); |
| printf("\n"); |
| for (device_find_first_child(bus, &dev); |
| dev; |
| device_find_next_child(&dev)) { |
| struct dm_i2c_chip *chip = dev_get_parent_platdata(dev); |
| |
| printf(" %02x: %s, offset len %x, flags %x\n", |
| chip->chip_addr, dev->name, chip->offset_len, |
| chip->flags); |
| } |
| } |
| #endif |
| |
| /** |
| * do_i2c_show_bus() - Handle the "i2c bus" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero always. |
| */ |
| #if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C) |
| static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc, |
| char * const argv[]) |
| { |
| if (argc == 1) { |
| /* show all busses */ |
| #ifdef CONFIG_DM_I2C |
| struct udevice *bus; |
| struct uclass *uc; |
| int ret; |
| |
| ret = uclass_get(UCLASS_I2C, &uc); |
| if (ret) |
| return CMD_RET_FAILURE; |
| uclass_foreach_dev(bus, uc) |
| show_bus(bus); |
| #else |
| int i; |
| |
| for (i = 0; i < CONFIG_SYS_NUM_I2C_BUSES; i++) { |
| printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name); |
| #ifndef CONFIG_SYS_I2C_DIRECT_BUS |
| int j; |
| |
| for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) { |
| if (i2c_bus[i].next_hop[j].chip == 0) |
| break; |
| printf("->%s@0x%2x:%d", |
| i2c_bus[i].next_hop[j].mux.name, |
| i2c_bus[i].next_hop[j].chip, |
| i2c_bus[i].next_hop[j].channel); |
| } |
| #endif |
| printf("\n"); |
| } |
| #endif |
| } else { |
| int i; |
| |
| /* show specific bus */ |
| i = simple_strtoul(argv[1], NULL, 10); |
| #ifdef CONFIG_DM_I2C |
| struct udevice *bus; |
| int ret; |
| |
| ret = uclass_get_device_by_seq(UCLASS_I2C, i, &bus); |
| if (ret) { |
| printf("Invalid bus %d: err=%d\n", i, ret); |
| return CMD_RET_FAILURE; |
| } |
| show_bus(bus); |
| #else |
| if (i >= CONFIG_SYS_NUM_I2C_BUSES) { |
| printf("Invalid bus %d\n", i); |
| return -1; |
| } |
| printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name); |
| #ifndef CONFIG_SYS_I2C_DIRECT_BUS |
| int j; |
| for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) { |
| if (i2c_bus[i].next_hop[j].chip == 0) |
| break; |
| printf("->%s@0x%2x:%d", |
| i2c_bus[i].next_hop[j].mux.name, |
| i2c_bus[i].next_hop[j].chip, |
| i2c_bus[i].next_hop[j].channel); |
| } |
| #endif |
| printf("\n"); |
| #endif |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| /** |
| * do_i2c_bus_num() - Handle the "i2c dev" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| */ |
| #if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) || \ |
| defined(CONFIG_DM_I2C) |
| static int do_i2c_bus_num(cmd_tbl_t *cmdtp, int flag, int argc, |
| char * const argv[]) |
| { |
| int ret = 0; |
| int bus_no; |
| |
| if (argc == 1) { |
| /* querying current setting */ |
| #ifdef CONFIG_DM_I2C |
| struct udevice *bus; |
| |
| if (!i2c_get_cur_bus(&bus)) |
| bus_no = bus->seq; |
| else |
| bus_no = -1; |
| #else |
| bus_no = i2c_get_bus_num(); |
| #endif |
| printf("Current bus is %d\n", bus_no); |
| } else { |
| bus_no = simple_strtoul(argv[1], NULL, 10); |
| #if defined(CONFIG_SYS_I2C) |
| if (bus_no >= CONFIG_SYS_NUM_I2C_BUSES) { |
| printf("Invalid bus %d\n", bus_no); |
| return -1; |
| } |
| #endif |
| printf("Setting bus to %d\n", bus_no); |
| #ifdef CONFIG_DM_I2C |
| ret = cmd_i2c_set_bus_num(bus_no); |
| #else |
| ret = i2c_set_bus_num(bus_no); |
| #endif |
| if (ret) |
| printf("Failure changing bus number (%d)\n", ret); |
| } |
| |
| return ret ? CMD_RET_FAILURE : 0; |
| } |
| #endif /* defined(CONFIG_SYS_I2C) */ |
| |
| #if defined(CONFIG_DM_I2C) |
| static int do_i2c_boot(cmd_tbl_t *cmdtp, int flag, int argc, |
| char * const argv[]) |
| { |
| uint8_t buf[5]; |
| const uint8_t buf_sdc[] = {0x53, 0x44, 0x43}; |
| const uint8_t buf_usb[] = {0x55, 0x53, 0x42}; |
| struct udevice *dev; |
| int ret, i, bus_no; |
| |
| /* |
| * The gpio i2c bum is 5 as default. |
| * It depends on the Meson i2c controller number. |
| * It is 5 for the current SoCs, May it be 4 in the future. |
| * If gpio bus number is not 5, run: i2c dev x first. |
| */ |
| if (!i2c_get_cur_bus(&dev)) |
| bus_no = dev->seq; |
| else { |
| bus_no = 5; |
| printf("Using the default BUS: 5. "); |
| } |
| |
| ret = i2c_get_chip_for_busnum(bus_no, 0x52, 1, &dev); |
| if (ret) { |
| printf("Cannot find i2c chip 0: %d\n", ret); |
| return 0; |
| } |
| |
| if (argc == 1) { |
| /* read fd/fe/ff */ |
| ret = dm_i2c_read(dev, 0xfd, &buf[0], 1); |
| ret = dm_i2c_read(dev, 0xfe, &buf[1], 1); |
| ret = dm_i2c_read(dev, 0xff, &buf[2], 1); |
| if (ret) { |
| printf("HDMI NO POWER or gpio wrong config"); |
| return ret; |
| } |
| buf[3] = '\0'; |
| printf("Current BOOT is %s\n", buf); |
| } else { |
| if (!strcmp(argv[1], "usb")) |
| strcpy((char *)buf, (const char *)buf_usb); |
| else if (!strcmp(argv[1], "sdc")) |
| strcpy((char *)buf, (const char *)buf_sdc); |
| else { |
| printf("Not support boot\n"); |
| return 0; |
| } |
| |
| printf("Setting BOOT to %s\n", argv[1]); |
| for (i = 0; i < 3; i++) { |
| ret = dm_i2c_write(dev, 0xfd + i, &buf[i], 1); |
| if (ret) |
| return ret; |
| udelay(1000);/* Waiting for write in*/ |
| } |
| } |
| |
| return ret; |
| } |
| #endif |
| |
| /** |
| * do_i2c_bus_speed() - Handle the "i2c speed" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| */ |
| static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) |
| { |
| int speed, ret=0; |
| |
| #ifdef CONFIG_DM_I2C |
| struct udevice *bus; |
| |
| if (i2c_get_cur_bus(&bus)) |
| return 1; |
| #endif |
| if (argc == 1) { |
| #ifdef CONFIG_DM_I2C |
| speed = dm_i2c_get_bus_speed(bus); |
| #else |
| speed = i2c_get_bus_speed(); |
| #endif |
| /* querying current speed */ |
| printf("Current bus speed=%d\n", speed); |
| } else { |
| speed = simple_strtoul(argv[1], NULL, 10); |
| printf("Setting bus speed to %d Hz\n", speed); |
| #ifdef CONFIG_DM_I2C |
| ret = dm_i2c_set_bus_speed(bus, speed); |
| #else |
| ret = i2c_set_bus_speed(speed); |
| #endif |
| if (ret) |
| printf("Failure changing bus speed (%d)\n", ret); |
| } |
| |
| return ret ? CMD_RET_FAILURE : 0; |
| } |
| |
| /** |
| * do_i2c_mm() - Handle the "i2c mm" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| */ |
| static int do_i2c_mm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) |
| { |
| return mod_i2c_mem (cmdtp, 1, flag, argc, argv); |
| } |
| |
| /** |
| * do_i2c_nm() - Handle the "i2c nm" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| */ |
| static int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) |
| { |
| return mod_i2c_mem (cmdtp, 0, flag, argc, argv); |
| } |
| |
| /** |
| * do_i2c_reset() - Handle the "i2c reset" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero always. |
| */ |
| static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) |
| { |
| #if defined(CONFIG_DM_I2C) |
| struct udevice *bus; |
| |
| if (i2c_get_cur_bus(&bus)) |
| return CMD_RET_FAILURE; |
| if (i2c_deblock(bus)) { |
| printf("Error: Not supported by the driver\n"); |
| return CMD_RET_FAILURE; |
| } |
| #elif defined(CONFIG_SYS_I2C) |
| i2c_init(I2C_ADAP->speed, I2C_ADAP->slaveaddr); |
| #else |
| i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); |
| #endif |
| return 0; |
| } |
| |
| static cmd_tbl_t cmd_i2c_sub[] = { |
| #if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C) |
| U_BOOT_CMD_MKENT(bus, 1, 1, do_i2c_show_bus, "", ""), |
| #endif |
| U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""), |
| #if defined(CONFIG_SYS_I2C) || \ |
| defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C) |
| U_BOOT_CMD_MKENT(dev, 1, 1, do_i2c_bus_num, "", ""), |
| #endif /* CONFIG_I2C_MULTI_BUS */ |
| #if defined(CONFIG_I2C_EDID) |
| U_BOOT_CMD_MKENT(edid, 1, 1, do_edid, "", ""), |
| #endif /* CONFIG_I2C_EDID */ |
| U_BOOT_CMD_MKENT(loop, 3, 1, do_i2c_loop, "", ""), |
| U_BOOT_CMD_MKENT(md, 3, 1, do_i2c_md, "", ""), |
| U_BOOT_CMD_MKENT(mm, 2, 1, do_i2c_mm, "", ""), |
| U_BOOT_CMD_MKENT(mw, 3, 1, do_i2c_mw, "", ""), |
| U_BOOT_CMD_MKENT(nm, 2, 1, do_i2c_nm, "", ""), |
| U_BOOT_CMD_MKENT(probe, 0, 1, do_i2c_probe, "", ""), |
| U_BOOT_CMD_MKENT(read, 5, 1, do_i2c_read, "", ""), |
| U_BOOT_CMD_MKENT(write, 6, 0, do_i2c_write, "", ""), |
| #ifdef CONFIG_DM_I2C |
| U_BOOT_CMD_MKENT(boot, 1, 1, do_i2c_boot, "", ""), |
| U_BOOT_CMD_MKENT(flags, 2, 1, do_i2c_flags, "", ""), |
| U_BOOT_CMD_MKENT(olen, 2, 1, do_i2c_olen, "", ""), |
| #endif |
| U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""), |
| #if defined(CONFIG_CMD_SDRAM) |
| U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""), |
| #endif |
| U_BOOT_CMD_MKENT(speed, 1, 1, do_i2c_bus_speed, "", ""), |
| }; |
| |
| static __maybe_unused void i2c_reloc(void) |
| { |
| static int relocated; |
| |
| if (!relocated) { |
| fixup_cmdtable(cmd_i2c_sub, ARRAY_SIZE(cmd_i2c_sub)); |
| relocated = 1; |
| }; |
| } |
| |
| /** |
| * do_i2c() - Handle the "i2c" command-line command |
| * @cmdtp: Command data struct pointer |
| * @flag: Command flag |
| * @argc: Command-line argument count |
| * @argv: Array of command-line arguments |
| * |
| * Returns zero on success, CMD_RET_USAGE in case of misuse and negative |
| * on error. |
| */ |
| static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) |
| { |
| cmd_tbl_t *c; |
| |
| #ifdef CONFIG_NEEDS_MANUAL_RELOC |
| i2c_reloc(); |
| #endif |
| |
| if (argc < 2) |
| return CMD_RET_USAGE; |
| |
| /* Strip off leading 'i2c' command argument */ |
| argc--; |
| argv++; |
| |
| c = find_cmd_tbl(argv[0], &cmd_i2c_sub[0], ARRAY_SIZE(cmd_i2c_sub)); |
| |
| if (c) |
| return c->cmd(cmdtp, flag, argc, argv); |
| else |
| return CMD_RET_USAGE; |
| } |
| |
| /***************************************************/ |
| #ifdef CONFIG_SYS_LONGHELP |
| static char i2c_help_text[] = |
| #if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C) |
| "bus [muxtype:muxaddr:muxchannel] - show I2C bus info\n" |
| "i2c " /* That's the prefix for the crc32 command below. */ |
| #endif |
| "crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n" |
| #if defined(CONFIG_SYS_I2C) || \ |
| defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C) |
| "i2c dev [dev] - show or set current I2C bus\n" |
| #endif /* CONFIG_I2C_MULTI_BUS */ |
| #if defined(CONFIG_I2C_EDID) |
| "i2c edid chip - print EDID configuration information\n" |
| #endif /* CONFIG_I2C_EDID */ |
| "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n" |
| "i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device\n" |
| "i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)\n" |
| "i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n" |
| "i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n" |
| "i2c probe [address] - test for and show device(s) on the I2C bus\n" |
| "i2c read chip address[.0, .1, .2] length memaddress - read to memory\n" |
| "i2c write memaddress chip address[.0, .1, .2] length [-s] - write memory\n" |
| " to I2C; the -s option selects bulk write in a single transaction\n" |
| #ifdef CONFIG_DM_I2C |
| "i2c boot [usb/sdc] - show or set current BOOT\n" |
| "i2c flags chip [flags] - set or get chip flags\n" |
| "i2c olen chip [offset_length] - set or get chip offset length\n" |
| #endif |
| "i2c reset - re-init the I2C Controller\n" |
| #if defined(CONFIG_CMD_SDRAM) |
| "i2c sdram chip - print SDRAM configuration information\n" |
| #endif |
| "i2c speed [speed] - show or set I2C bus speed"; |
| #endif |
| |
| U_BOOT_CMD( |
| i2c, 7, 1, do_i2c, |
| "I2C sub-system", |
| i2c_help_text |
| ); |