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authorStefan Roese <sr@denx.de>2007-08-23 11:02:37 +0200
committerStefan Roese <sr@denx.de>2007-08-23 11:02:37 +0200
commitc25dd8fc25e9ca3695db996a257d9ba4dab414db (patch)
treeafa3f321ce7d27ee7563ae5532119f219749dda5 /board/lwmon5/lwmon5.c
parentc64fb30e4c5976007d56fc1789c7a0666082b536 (diff)
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ppc4xx: Add support for 2nd I2C EEPROM on lwmon5 board
This patch adds support for the 2nd EEPROM (AT24C128) on the lwmon5 board. Now the "eeprom" command can be used to read/write from/to this device. Additionally a new command was added "eepromwp" to en-/disable the write-protect of this 2nd EEPROM. The 1st EEPROM is not affected by this write-protect command. Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/lwmon5/lwmon5.c')
-rw-r--r--board/lwmon5/lwmon5.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
index 0958194..77f9989 100644
--- a/board/lwmon5/lwmon5.c
+++ b/board/lwmon5/lwmon5.c
@@ -19,6 +19,7 @@
*/
#include <common.h>
+#include <command.h>
#include <ppc440.h>
#include <asm/processor.h>
#include <asm/gpio.h>
@@ -527,3 +528,29 @@ void hw_watchdog_reset(void)
val = gpio_read_out_bit(CFG_GPIO_WATCHDOG) == 0 ? 1 : 0;
gpio_write_bit(CFG_GPIO_WATCHDOG, val);
}
+
+int do_eeprom_wp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ if (argc < 2) {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ if ((strcmp(argv[1], "on") == 0)) {
+ gpio_write_bit(CFG_GPIO_EEPROM_EXT_WP, 1);
+ } else if ((strcmp(argv[1], "off") == 0)) {
+ gpio_write_bit(CFG_GPIO_EEPROM_EXT_WP, 0);
+ } else {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ eepromwp, 2, 0, do_eeprom_wp,
+ "eepromwp- eeprom write protect off/on\n",
+ "<on|off> - enable (on) or disable (off) I2C EEPROM write protect\n"
+);