* (C) Copyright 2000, 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
- * 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.
- *
- * 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
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
/*
* Support for read and write access to EEPROM like memory devices. This
* includes regular EEPROM as well as FRAM (ferroelectic nonvolaile RAM).
* FRAM devices read and write data at bus speed. In particular, there is no
- * write delay. Also, there is no limit imposed on the numer of bytes that can
+ * write delay. Also, there is no limit imposed on the number of bytes that can
* be transferred with a single read or write.
*
* Use the following configuration options to ensure no unneeded performance
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_CMD_EEPROM)
-int do_eeprom ( cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+static int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const char *const fmt =
"\nEEPROM @0x%lX %s: addr %08lx off %04lx count %ld ... ";
ulong cnt = simple_strtoul (argv[4], NULL, 16);
#endif /* CONFIG_SYS_I2C_MULTI_EEPROMS */
-# ifndef CONFIG_SPI
+# if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
eeprom_init ();
# endif /* !CONFIG_SPI */
}
}
- cmd_usage(cmdtp);
- return 1;
+ return CMD_RET_USAGE;
}
#endif
* 0x00000nxx for EEPROM address selectors and page number at n.
*/
-#ifndef CONFIG_SPI
+#if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
#if !defined(CONFIG_SYS_I2C_EEPROM_ADDR_LEN) || CONFIG_SYS_I2C_EEPROM_ADDR_LEN < 1 || CONFIG_SYS_I2C_EEPROM_ADDR_LEN > 2
#error CONFIG_SYS_I2C_EEPROM_ADDR_LEN must be 1 or 2
#endif
len = maxlen;
#endif
-#ifdef CONFIG_SPI
+#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
spi_read (addr, alen, buffer, len);
#else
- if (i2c_read (addr[0], offset, alen-1, buffer, len) != 0)
+#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
+ i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
+#endif
+ if (i2c_read(addr[0], offset, alen - 1, buffer, len))
rcode = 1;
#endif
buffer += len;
/*
* For a FRAM device there is no limit on the number of the
- * bytes that can be ccessed with the single read or write
+ * bytes that can be accessed with the single read or write
* operation.
*/
#if !defined(CONFIG_SYS_I2C_FRAM)
len = maxlen;
#endif
-#ifdef CONFIG_SPI
+#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
spi_write (addr, alen, buffer, len);
#else
#if defined(CONFIG_SYS_EEPROM_X40430)
/* Write is enabled ... now write eeprom value.
*/
#endif
- if (i2c_write (addr[0], offset, alen-1, buffer, len) != 0)
+#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
+ i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
+#endif
+ if (i2c_write(addr[0], offset, alen - 1, buffer, len))
rcode = 1;
#endif
return rcode;
}
-#ifndef CONFIG_SPI
+#if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
int
eeprom_probe (unsigned dev_addr, unsigned offset)
{
#define CONFIG_SYS_I2C_SPEED 50000
#endif
-#ifndef CONFIG_SYS_I2C_SLAVE
-#define CONFIG_SYS_I2C_SLAVE 0xFE
-#endif
-
void eeprom_init (void)
{
-#if defined(CONFIG_SPI)
+
+#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
spi_init_f ();
#endif
-#if defined(CONFIG_HARD_I2C) || \
- defined(CONFIG_SOFT_I2C)
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C_SOFT)
i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
}
+
/*-----------------------------------------------------------------------
*/
"EEPROM sub-system",
"read devaddr addr off cnt\n"
"eeprom write devaddr addr off cnt\n"
- " - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'\n"
-);
+ " - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'"
+)
#else /* One EEPROM */
U_BOOT_CMD(
eeprom, 5, 1, do_eeprom,
"EEPROM sub-system",
"read addr off cnt\n"
"eeprom write addr off cnt\n"
- " - read/write `cnt' bytes at EEPROM offset `off'\n"
-);
+ " - read/write `cnt' bytes at EEPROM offset `off'"
+)
#endif /* CONFIG_SYS_I2C_MULTI_EEPROMS */
#endif