#include <command.h>
#include <i2c.h>
-extern void eeprom_init (void);
-extern int eeprom_read (unsigned dev_addr, unsigned offset,
- uchar *buffer, unsigned cnt);
-extern int eeprom_write (unsigned dev_addr, unsigned offset,
- uchar *buffer, unsigned cnt);
-#if defined(CONFIG_SYS_EEPROM_WREN)
-extern int eeprom_write_enable (unsigned dev_addr, int state);
+#ifndef CONFIG_SYS_I2C_SPEED
+#define CONFIG_SYS_I2C_SPEED 50000
#endif
-
+/* Maximum number of times to poll for acknowledge after write */
#if defined(CONFIG_SYS_EEPROM_X40430)
- /* Maximum number of times to poll for acknowledge after write */
#define MAX_ACKNOWLEDGE_POLLS 10
#endif
-/* ------------------------------------------------------------------------- */
-
-#if defined(CONFIG_CMD_EEPROM)
-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 ... ";
-
-#if defined(CONFIG_SYS_I2C_MULTI_EEPROMS)
- if (argc == 6) {
- ulong dev_addr = simple_strtoul (argv[2], NULL, 16);
- ulong addr = simple_strtoul (argv[3], NULL, 16);
- ulong off = simple_strtoul (argv[4], NULL, 16);
- ulong cnt = simple_strtoul (argv[5], NULL, 16);
-#else
- if (argc == 5) {
- ulong dev_addr = CONFIG_SYS_DEF_EEPROM_ADDR;
- ulong addr = simple_strtoul (argv[2], NULL, 16);
- ulong off = simple_strtoul (argv[3], NULL, 16);
- ulong cnt = simple_strtoul (argv[4], NULL, 16);
-#endif /* CONFIG_SYS_I2C_MULTI_EEPROMS */
-
-# if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
- eeprom_init ();
-# endif /* !CONFIG_SPI */
-
- if (strcmp (argv[1], "read") == 0) {
- int rcode;
-
- printf (fmt, dev_addr, argv[1], addr, off, cnt);
-
- rcode = eeprom_read (dev_addr, off, (uchar *) addr, cnt);
-
- puts ("done\n");
- return rcode;
- } else if (strcmp (argv[1], "write") == 0) {
- int rcode;
-
- printf (fmt, dev_addr, argv[1], addr, off, cnt);
-
- rcode = eeprom_write (dev_addr, off, (uchar *) addr, cnt);
-
- puts ("done\n");
- return rcode;
- }
- }
-
- return CMD_RET_USAGE;
-}
-#endif
-
-/*-----------------------------------------------------------------------
- *
+/*
* for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 2 (16-bit EEPROM address) offset is
* 0x000nxxxx for EEPROM address selectors at n, offset xxxx in EEPROM.
*
* for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 1 (8-bit EEPROM page address) offset is
* 0x00000nxx for EEPROM address selectors and page number at n.
*/
-
#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
+#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
#endif
+#if defined(CONFIG_SYS_EEPROM_WREN)
+extern int eeprom_write_enable (unsigned dev_addr, int state);
+#endif
+
+void eeprom_init(void)
+{
+ /* SPI EEPROM */
+#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
+ spi_init_f ();
+#endif
+
+ /* I2C EEPROM */
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C_SOFT)
+ i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+}
+
int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt)
{
unsigned end = offset + cnt;
unsigned blk_off;
int rcode = 0;
- /* Read data until done or would cross a page boundary.
+ /*
+ * Read data until done or would cross a page boundary.
* We must write the address again when changing pages
* because the next page may be in a different device.
*/
#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
spi_read (addr, alen, buffer, len);
#else
- if (i2c_read (addr[0], addr[1], 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;
return rcode;
}
-/*-----------------------------------------------------------------------
- *
- * for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 2 (16-bit EEPROM address) offset is
- * 0x000nxxxx for EEPROM address selectors at n, offset xxxx in EEPROM.
- *
- * for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 1 (8-bit EEPROM page address) offset is
- * 0x00000nxx for EEPROM address selectors and page number at n.
- */
-
int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt)
{
unsigned end = offset + cnt;
#if defined(CONFIG_SYS_EEPROM_WREN)
eeprom_write_enable (dev_addr,1);
#endif
- /* Write data until done or would cross a write page boundary.
+ /*
+ * Write data until done or would cross a write page boundary.
* We must write the address again when changing pages
* because the address counter only increments within a page.
*/
/* Write is enabled ... now write eeprom value.
*/
#endif
- if (i2c_write (addr[0], addr[1], 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
}
#if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
-int
-eeprom_probe (unsigned dev_addr, unsigned offset)
+int eeprom_probe(unsigned dev_addr, unsigned offset)
{
unsigned char chip;
}
#endif
-/*-----------------------------------------------------------------------
- * Set default values
- */
-#ifndef CONFIG_SYS_I2C_SPEED
-#define CONFIG_SYS_I2C_SPEED 50000
-#endif
-
-void eeprom_init (void)
+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 ... ";
-#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
- spi_init_f ();
-#endif
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C_SOFT)
- i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-}
+#if defined(CONFIG_SYS_I2C_MULTI_EEPROMS)
+ if (argc == 6) {
+ ulong dev_addr = simple_strtoul (argv[2], NULL, 16);
+ ulong addr = simple_strtoul (argv[3], NULL, 16);
+ ulong off = simple_strtoul (argv[4], NULL, 16);
+ ulong cnt = simple_strtoul (argv[5], NULL, 16);
+#else
+ if (argc == 5) {
+ ulong dev_addr = CONFIG_SYS_DEF_EEPROM_ADDR;
+ ulong addr = simple_strtoul (argv[2], NULL, 16);
+ ulong off = simple_strtoul (argv[3], NULL, 16);
+ ulong cnt = simple_strtoul (argv[4], NULL, 16);
+#endif /* CONFIG_SYS_I2C_MULTI_EEPROMS */
-/*-----------------------------------------------------------------------
- */
+# if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
+ eeprom_init ();
+# endif /* !CONFIG_SPI */
-/***************************************************/
+ if (strcmp (argv[1], "read") == 0) {
+ int rcode;
+
+ printf (fmt, dev_addr, argv[1], addr, off, cnt);
-#if defined(CONFIG_CMD_EEPROM)
+ rcode = eeprom_read (dev_addr, off, (uchar *) addr, cnt);
+
+ puts ("done\n");
+ return rcode;
+ } else if (strcmp (argv[1], "write") == 0) {
+ int rcode;
+
+ printf (fmt, dev_addr, argv[1], addr, off, cnt);
+
+ rcode = eeprom_write (dev_addr, off, (uchar *) addr, cnt);
+
+ puts ("done\n");
+ return rcode;
+ }
+ }
+
+ return CMD_RET_USAGE;
+}
#ifdef CONFIG_SYS_I2C_MULTI_EEPROMS
U_BOOT_CMD(
"read devaddr addr off cnt\n"
"eeprom write devaddr addr off cnt\n"
" - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'"
-);
+)
#else /* One EEPROM */
U_BOOT_CMD(
eeprom, 5, 1, do_eeprom,
"read addr off cnt\n"
"eeprom write addr off cnt\n"
" - read/write `cnt' bytes at EEPROM offset `off'"
-);
+)
#endif /* CONFIG_SYS_I2C_MULTI_EEPROMS */
-
-#endif
projects / people / ms / u-boot.git / blobdiff