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authorTimur Tabi <timur@freescale.com>2010-09-30 15:36:50 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-10-07 09:57:07 -0500
commitbfb707191a4332361f13f0fb3d99dd9986af8825 (patch)
treea2399e6d2734c598141b2d6c56efe14f2b60164b /board/freescale
parente95a0611f259ed0440894be04a1d218dc4e56fb7 (diff)
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fsl: add support for NXID v1 EEPROM format
Freescale application note AN3638 describes an update to the NXID format, which stores MAC addresses and related data on an on-board EEPROM. The new version adds support for up to 23 MAC addresses, instead of just 8. Since the initial implementation of NXID had a "0" in the 'version' field, this new version is called "v1". Boards that are shipped with EEPROMs in the NXID v1 format should define CONFIG_SYS_I2C_EEPROM_NXID_1 instead of CONFIG_SYS_I2C_EEPROM_NXID. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'board/freescale')
-rw-r--r--board/freescale/common/sys_eeprom.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/board/freescale/common/sys_eeprom.c b/board/freescale/common/sys_eeprom.c
index 43f61f9..11dfd84 100644
--- a/board/freescale/common/sys_eeprom.c
+++ b/board/freescale/common/sys_eeprom.c
@@ -28,13 +28,21 @@
#include <i2c.h>
#include <linux/ctype.h>
+#ifdef CONFIG_SYS_I2C_EEPROM_CCID
#include "../common/eeprom.h"
+#define MAX_NUM_PORTS 8
+#endif
-#if !defined(CONFIG_SYS_I2C_EEPROM_CCID) && !defined(CONFIG_SYS_I2C_EEPROM_NXID)
-#error "Please define either CONFIG_SYS_I2C_EEPROM_CCID or CONFIG_SYS_I2C_EEPROM_NXID"
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+#define MAX_NUM_PORTS 8
+#define NXID_VERSION 0
#endif
-#define MAX_NUM_PORTS 8 /* This value must be 8 as defined in doc */
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID_1
+#define CONFIG_SYS_I2C_EEPROM_NXID
+#define MAX_NUM_PORTS 23
+#define NXID_VERSION 1
+#endif
/**
* static eeprom: EEPROM layout for CCID or NXID formats
@@ -68,8 +76,8 @@ static struct __attribute__ ((__packed__)) eeprom {
u8 res_1[21]; /* 0x2b - 0x3f Reserved */
u8 mac_count; /* 0x40 Number of MAC addresses */
u8 mac_flag; /* 0x41 MAC table flags */
- u8 mac[MAX_NUM_PORTS][6]; /* 0x42 - 0x71 MAC addresses */
- u32 crc; /* 0x72 CRC32 checksum */
+ u8 mac[MAX_NUM_PORTS][6]; /* 0x42 - x MAC addresses */
+ u32 crc; /* x+1 CRC32 checksum */
#endif
} e;
@@ -316,7 +324,7 @@ static void set_mac_address(unsigned int index, const char *string)
char *p = (char *) string;
unsigned int i;
- if (!string) {
+ if ((index >= MAX_NUM_PORTS) || !string) {
printf("Usage: mac <n> XX:XX:XX:XX:XX:XX\n");
return;
}
@@ -349,7 +357,7 @@ int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (cmd == 'i') {
#ifdef CONFIG_SYS_I2C_EEPROM_NXID
memcpy(e.id, "NXID", sizeof(e.id));
- e.version = 0;
+ e.version = NXID_VERSION;
#else
memcpy(e.id, "CCID", sizeof(e.id));
#endif
@@ -398,8 +406,8 @@ int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
e.mac_count = simple_strtoul(argv[2], NULL, 16);
update_crc();
break;
- case '0' ... '7': /* "mac 0" through "mac 7" */
- set_mac_address(cmd - '0', argv[2]);
+ case '0' ... '9': /* "mac 0" through "mac 22" */
+ set_mac_address(simple_strtoul(argv[1], NULL, 10), argv[2]);
break;
case 'h': /* help */
default: