#include <config.h>
#include <command.h>
#include <i2c.h>
+#include <eeprom_layout.h>
#ifndef CONFIG_SYS_I2C_SPEED
#define CONFIG_SYS_I2C_SPEED 50000
#define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS 8
#endif
+#ifndef I2C_RXTX_LEN
+#define I2C_RXTX_LEN 128
+#endif
+
#define EEPROM_PAGE_SIZE (1 << CONFIG_SYS_EEPROM_PAGE_WRITE_BITS)
#define EEPROM_PAGE_OFFSET(x) ((x) & (EEPROM_PAGE_SIZE - 1))
#endif
/* I2C EEPROM */
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C_SOFT)
#if defined(CONFIG_SYS_I2C)
if (bus >= 0)
i2c_set_bus_num(bus);
-#endif
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
}
return ret;
}
-static int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int parse_numeric_param(char *str)
{
- const char *const fmt =
- "\nEEPROM @0x%lX %s: addr %08lx off %04lx count %ld ... ";
- char * const *args = &argv[2];
- int rcode;
- ulong dev_addr, addr, off, cnt;
- int bus_addr;
+ char *endptr;
+ int value = simple_strtol(str, &endptr, 16);
+
+ return (*endptr != '\0') ? -1 : value;
+}
+
+/**
+ * parse_i2c_bus_addr - parse the i2c bus and i2c devaddr parameters
+ *
+ * @i2c_bus: address to store the i2c bus
+ * @i2c_addr: address to store the device i2c address
+ * @argc: count of command line arguments left to parse
+ * @argv: command line arguments left to parse
+ * @argc_no_bus_addr: argc value we expect to see when bus & addr aren't given
+ *
+ * @returns: number of arguments parsed or CMD_RET_USAGE if error
+ */
+static int parse_i2c_bus_addr(int *i2c_bus, ulong *i2c_addr, int argc,
+ char * const argv[], int argc_no_bus_addr)
+{
+ int argc_no_bus = argc_no_bus_addr + 1;
+ int argc_bus_addr = argc_no_bus_addr + 2;
- switch (argc) {
#ifdef CONFIG_SYS_DEF_EEPROM_ADDR
- case 5:
- bus_addr = -1;
- dev_addr = CONFIG_SYS_DEF_EEPROM_ADDR;
- break;
+ if (argc == argc_no_bus_addr) {
+ *i2c_bus = -1;
+ *i2c_addr = CONFIG_SYS_DEF_EEPROM_ADDR;
+
+ return 0;
+ }
#endif
- case 6:
- bus_addr = -1;
- dev_addr = simple_strtoul(*args++, NULL, 16);
- break;
- case 7:
- bus_addr = simple_strtoul(*args++, NULL, 16);
- dev_addr = simple_strtoul(*args++, NULL, 16);
- break;
- default:
- return CMD_RET_USAGE;
+ if (argc == argc_no_bus) {
+ *i2c_bus = -1;
+ *i2c_addr = parse_numeric_param(argv[0]);
+
+ return 1;
+ }
+
+ if (argc == argc_bus_addr) {
+ *i2c_bus = parse_numeric_param(argv[0]);
+ *i2c_addr = parse_numeric_param(argv[1]);
+
+ return 2;
}
- addr = simple_strtoul(*args++, NULL, 16);
- off = simple_strtoul(*args++, NULL, 16);
- cnt = simple_strtoul(*args++, NULL, 16);
+ return CMD_RET_USAGE;
+}
+
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+
+__weak int eeprom_parse_layout_version(char *str)
+{
+ return LAYOUT_VERSION_UNRECOGNIZED;
+}
+
+static unsigned char eeprom_buf[CONFIG_SYS_EEPROM_SIZE];
+
+#endif
+
+enum eeprom_action {
+ EEPROM_READ,
+ EEPROM_WRITE,
+ EEPROM_PRINT,
+ EEPROM_UPDATE,
+ EEPROM_ACTION_INVALID,
+};
+
+static enum eeprom_action parse_action(char *cmd)
+{
+ if (!strncmp(cmd, "read", 4))
+ return EEPROM_READ;
+ if (!strncmp(cmd, "write", 5))
+ return EEPROM_WRITE;
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+ if (!strncmp(cmd, "print", 5))
+ return EEPROM_PRINT;
+ if (!strncmp(cmd, "update", 6))
+ return EEPROM_UPDATE;
+#endif
+
+ return EEPROM_ACTION_INVALID;
+}
+
+static int eeprom_execute_command(enum eeprom_action action, int i2c_bus,
+ ulong i2c_addr, int layout_ver, char *key,
+ char *value, ulong addr, ulong off, ulong cnt)
+{
+ int rcode = 0;
+ const char *const fmt =
+ "\nEEPROM @0x%lX %s: addr %08lx off %04lx count %ld ... ";
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+ struct eeprom_layout layout;
+#endif
- eeprom_init(bus_addr);
+ if (action == EEPROM_ACTION_INVALID)
+ return CMD_RET_USAGE;
- if (strcmp(argv[1], "read") == 0) {
- printf(fmt, dev_addr, argv[1], addr, off, cnt);
+ eeprom_init(i2c_bus);
+ if (action == EEPROM_READ) {
+ printf(fmt, i2c_addr, "read", addr, off, cnt);
- rcode = eeprom_read(dev_addr, off, (uchar *)addr, cnt);
+ rcode = eeprom_read(i2c_addr, off, (uchar *)addr, cnt);
puts("done\n");
return rcode;
- } else if (strcmp(argv[1], "write") == 0) {
- printf(fmt, dev_addr, argv[1], addr, off, cnt);
+ } else if (action == EEPROM_WRITE) {
+ printf(fmt, i2c_addr, "write", addr, off, cnt);
- rcode = eeprom_write(dev_addr, off, (uchar *)addr, cnt);
+ rcode = eeprom_write(i2c_addr, off, (uchar *)addr, cnt);
puts("done\n");
return rcode;
}
- return CMD_RET_USAGE;
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+ rcode = eeprom_read(i2c_addr, 0, eeprom_buf, CONFIG_SYS_EEPROM_SIZE);
+ if (rcode < 0)
+ return rcode;
+
+ eeprom_layout_setup(&layout, eeprom_buf, CONFIG_SYS_EEPROM_SIZE,
+ layout_ver);
+
+ if (action == EEPROM_PRINT) {
+ layout.print(&layout);
+ return 0;
+ }
+
+ layout.update(&layout, key, value);
+
+ rcode = eeprom_write(i2c_addr, 0, layout.data, CONFIG_SYS_EEPROM_SIZE);
+#endif
+
+ return rcode;
+}
+
+#define NEXT_PARAM(argc, index) { (argc)--; (index)++; }
+int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int layout_ver = LAYOUT_VERSION_AUTODETECT;
+ enum eeprom_action action = EEPROM_ACTION_INVALID;
+ int i2c_bus = -1, index = 0;
+ ulong i2c_addr = -1, addr = 0, cnt = 0, off = 0;
+ int ret;
+ char *field_name = "";
+ char *field_value = "";
+
+ if (argc <= 1)
+ return CMD_RET_USAGE;
+
+ NEXT_PARAM(argc, index); /* Skip program name */
+
+ action = parse_action(argv[index]);
+ NEXT_PARAM(argc, index);
+
+ if (action == EEPROM_ACTION_INVALID)
+ return CMD_RET_USAGE;
+
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+ if (action == EEPROM_PRINT || action == EEPROM_UPDATE) {
+ if (!strcmp(argv[index], "-l")) {
+ NEXT_PARAM(argc, index);
+ layout_ver = eeprom_parse_layout_version(argv[index]);
+ NEXT_PARAM(argc, index);
+ }
+ }
+#endif
+
+ switch (action) {
+ case EEPROM_READ:
+ case EEPROM_WRITE:
+ ret = parse_i2c_bus_addr(&i2c_bus, &i2c_addr, argc,
+ argv + index, 3);
+ break;
+ case EEPROM_PRINT:
+ ret = parse_i2c_bus_addr(&i2c_bus, &i2c_addr, argc,
+ argv + index, 0);
+ break;
+ case EEPROM_UPDATE:
+ ret = parse_i2c_bus_addr(&i2c_bus, &i2c_addr, argc,
+ argv + index, 2);
+ break;
+ default:
+ /* Get compiler to stop whining */
+ return CMD_RET_USAGE;
+ }
+
+ if (ret == CMD_RET_USAGE)
+ return ret;
+
+ while (ret--)
+ NEXT_PARAM(argc, index);
+
+ if (action == EEPROM_READ || action == EEPROM_WRITE) {
+ addr = parse_numeric_param(argv[index]);
+ NEXT_PARAM(argc, index);
+ off = parse_numeric_param(argv[index]);
+ NEXT_PARAM(argc, index);
+ cnt = parse_numeric_param(argv[index]);
+ }
+
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+ if (action == EEPROM_UPDATE) {
+ field_name = argv[index];
+ NEXT_PARAM(argc, index);
+ field_value = argv[index];
+ NEXT_PARAM(argc, index);
+ }
+#endif
+
+ return eeprom_execute_command(action, i2c_bus, i2c_addr, layout_ver,
+ field_name, field_value, addr, off, cnt);
}
U_BOOT_CMD(
- eeprom, 7, 1, do_eeprom,
+ eeprom, 8, 1, do_eeprom,
"EEPROM sub-system",
"read <bus> <devaddr> addr off cnt\n"
"eeprom write <bus> <devaddr> addr off cnt\n"
" - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'"
+#ifdef CONFIG_CMD_EEPROM_LAYOUT
+ "\n"
+ "eeprom print [-l <layout_version>] <bus> <devaddr>\n"
+ " - Print layout fields and their data in human readable format\n"
+ "eeprom update [-l <layout_version>] <bus> <devaddr> field_name field_value\n"
+ " - Update a specific eeprom field with new data.\n"
+ " The new data must be written in the same human readable format as shown by the print command.\n"
+ "\n"
+ "LAYOUT VERSIONS\n"
+ "The -l option can be used to force the command to interpret the EEPROM data using the chosen layout.\n"
+ "If the -l option is omitted, the command will auto detect the layout based on the data in the EEPROM.\n"
+ "The values which can be provided with the -l option are:\n"
+ CONFIG_EEPROM_LAYOUT_HELP_STRING"\n"
+#endif
)
projects / people / ms / u-boot.git / blobdiff