/*
- * Copyright 2006, 2008 Freescale Semiconductor
+ * Copyright 2006, 2008-2009, 2011 Freescale Semiconductor
* York Sun (yorksun@freescale.com)
* Haiying Wang (haiying.wang@freescale.com)
* Timur Tabi (timur@freescale.com)
*
- * 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+
*/
#include <common.h>
#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(CFG_I2C_EEPROM_CCID) && !defined(CFG_I2C_EEPROM_NXID)
-#error "Please define either CFG_I2C_EEPROM_CCID or CFG_I2C_EEPROM_NXID"
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+/* some boards with non-256-bytes EEPROM have special define */
+/* for MAX_NUM_PORTS in board-specific file */
+#ifndef MAX_NUM_PORTS
+#define MAX_NUM_PORTS 16
+#endif
+#define NXID_VERSION 1
#endif
/**
* See application note AN3638 for details.
*/
static struct __attribute__ ((__packed__)) eeprom {
-#ifdef CFG_I2C_EEPROM_CCID
+#ifdef CONFIG_SYS_I2C_EEPROM_CCID
u8 id[4]; /* 0x00 - 0x03 EEPROM Tag 'CCID' */
u8 major; /* 0x04 Board revision, major */
u8 minor; /* 0x05 Board revision, minor */
u8 res_0[40]; /* 0x18 - 0x3f Reserved */
u8 mac_count; /* 0x40 Number of MAC addresses */
u8 mac_flag; /* 0x41 MAC table flags */
- u8 mac[8][6]; /* 0x42 - 0x71 MAC addresses */
+ u8 mac[MAX_NUM_PORTS][6]; /* 0x42 - 0x71 MAC addresses */
u32 crc; /* 0x72 CRC32 checksum */
#endif
-#ifdef CFG_I2C_EEPROM_NXID
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
u8 id[4]; /* 0x00 - 0x03 EEPROM Tag 'NXID' */
u8 sn[12]; /* 0x04 - 0x0F Serial Number */
u8 errata[5]; /* 0x10 - 0x14 Errata Level */
u8 res_1[21]; /* 0x2b - 0x3f Reserved */
u8 mac_count; /* 0x40 Number of MAC addresses */
u8 mac_flag; /* 0x41 MAC table flags */
- u8 mac[8][6]; /* 0x42 - 0x71 MAC addresses */
- u32 crc; /* 0x72 CRC32 checksum */
+ u8 mac[MAX_NUM_PORTS][6]; /* 0x42 - 0xa1 MAC addresses */
+ u8 res_2[90]; /* 0xa2 - 0xfb Reserved */
+ u32 crc; /* 0xfc - 0xff CRC32 checksum */
#endif
} e;
/* Set to 1 if we've read EEPROM into memory */
static int has_been_read = 0;
-#ifdef CFG_I2C_EEPROM_NXID
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
/* Is this a valid NXID EEPROM? */
-#define is_valid (*((u32 *)e.id) == (('N' << 24) | ('X' << 16) | ('I' << 8) | 'D'))
+#define is_valid ((e.id[0] == 'N') || (e.id[1] == 'X') || \
+ (e.id[2] == 'I') || (e.id[3] == 'D'))
#endif
-#ifdef CFG_I2C_EEPROM_CCID
+#ifdef CONFIG_SYS_I2C_EEPROM_CCID
/* Is this a valid CCID EEPROM? */
-#define is_valid (*((u32 *)e.id) == (('C' << 24) | ('C' << 16) | ('I' << 8) | 'D'))
+#define is_valid ((e.id[0] == 'C') || (e.id[1] == 'C') || \
+ (e.id[2] == 'I') || (e.id[3] == 'D'))
#endif
/**
unsigned int crc;
/* EEPROM tag ID, either CCID or NXID */
-#ifdef CFG_I2C_EEPROM_NXID
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
printf("ID: %c%c%c%c v%u\n", e.id[0], e.id[1], e.id[2], e.id[3],
- be32_to_cpu(e.version));
+ e.version);
#else
printf("ID: %c%c%c%c\n", e.id[0], e.id[1], e.id[2], e.id[3]);
#endif
printf("SN: %s\n", e.sn);
/* Errata level. */
-#ifdef CFG_I2C_EEPROM_NXID
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
printf("Errata: %s\n", e.errata);
#else
printf("Errata: %c%c\n",
e.date[3] & 0x80 ? "PM" : "");
/* Show MAC addresses */
- for (i = 0; i < min(e.mac_count, 8); i++) {
+ for (i = 0; i < min(e.mac_count, (u8)MAX_NUM_PORTS); i++) {
+
u8 *p = e.mac[i];
printf("Eth%u: %02x:%02x:%02x:%02x:%02x:%02x\n", i,
static int read_eeprom(void)
{
int ret;
-#ifdef CFG_EEPROM_BUS_NUM
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
unsigned int bus;
#endif
if (has_been_read)
return 0;
-#ifdef CFG_EEPROM_BUS_NUM
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
bus = i2c_get_bus_num();
- i2c_set_bus_num(CFG_EEPROM_BUS_NUM);
+ i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM);
#endif
- ret = i2c_read(CFG_I2C_EEPROM_ADDR, 0, CFG_I2C_EEPROM_ADDR_LEN,
+ ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
(void *)&e, sizeof(e));
-#ifdef CFG_EEPROM_BUS_NUM
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
i2c_set_bus_num(bus);
#endif
return ret;
}
+/**
+ * update_crc - update the CRC
+ *
+ * This function should be called after each update to the EEPROM structure,
+ * to make sure the CRC is always correct.
+ */
+static void update_crc(void)
+{
+ u32 crc;
+
+ crc = crc32(0, (void *)&e, sizeof(e) - 4);
+ e.crc = cpu_to_be32(crc);
+}
+
/**
* prog_eeprom - write the EEPROM from memory
*/
static int prog_eeprom(void)
{
- int ret, i, length;
- unsigned int crc;
+ int ret = 0;
+ int i;
void *p;
-#ifdef CFG_EEPROM_BUS_NUM
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
unsigned int bus;
#endif
/* Set the reserved values to 0xFF */
-#ifdef CFG_I2C_EEPROM_NXID
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
e.res_0 = 0xFF;
memset(e.res_1, 0xFF, sizeof(e.res_1));
#else
memset(e.res_0, 0xFF, sizeof(e.res_0));
#endif
+ update_crc();
- length = sizeof(e);
- crc = crc32(0, (void *)&e, length - 4);
- e.crc = cpu_to_be32(crc);
-
-#ifdef CFG_EEPROM_BUS_NUM
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
bus = i2c_get_bus_num();
- i2c_set_bus_num(CFG_EEPROM_BUS_NUM);
+ i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM);
#endif
- for (i = 0, p = &e; i < length; i += 8, p += 8) {
- ret = i2c_write(CFG_I2C_EEPROM_ADDR, i, CFG_I2C_EEPROM_ADDR_LEN,
- p, min((length - i), 8));
+ /*
+ * The AT24C02 datasheet says that data can only be written in page
+ * mode, which means 8 bytes at a time, and it takes up to 5ms to
+ * complete a given write.
+ */
+ for (i = 0, p = &e; i < sizeof(e); i += 8, p += 8) {
+ ret = i2c_write(CONFIG_SYS_I2C_EEPROM_ADDR, i, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ p, min((int)(sizeof(e) - i), 8));
if (ret)
break;
udelay(5000); /* 5ms write cycle timing */
}
-#ifdef CFG_EEPROM_BUS_NUM
+ if (!ret) {
+ /* Verify the write by reading back the EEPROM and comparing */
+ struct eeprom e2;
+
+ ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (void *)&e2, sizeof(e2));
+ if (!ret && memcmp(&e, &e2, sizeof(e)))
+ ret = -1;
+ }
+
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
i2c_set_bus_num(bus);
#endif
if (ret) {
printf("Programming failed.\n");
+ has_been_read = 0;
return -1;
}
for (i = 0; i < 6; i++)
e.date[i] = h2i(string[2 * i]) << 4 | h2i(string[2 * i + 1]);
+
+ update_crc();
}
/**
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;
}
if (*p == ':')
p++;
}
+
+ update_crc();
}
-int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- int i;
char cmd;
if (argc == 1) {
return 0;
}
- if ((cmd == 'i') && (argc > 2)) {
- for (i = 0; i < 4; i++)
- e.id[i] = argv[2][i];
+ if (cmd == 'i') {
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+ memcpy(e.id, "NXID", sizeof(e.id));
+ e.version = NXID_VERSION;
+#else
+ memcpy(e.id, "CCID", sizeof(e.id));
+#endif
+ update_crc();
return 0;
}
prog_eeprom();
break;
default:
- printf("Usage:\n%s\n", cmdtp->usage);
- break;
+ return cmd_usage(cmdtp);
}
return 0;
case 'n': /* serial number */
memset(e.sn, 0, sizeof(e.sn));
strncpy((char *)e.sn, argv[2], sizeof(e.sn) - 1);
+ update_crc();
break;
case 'e': /* errata */
-#ifdef CFG_I2C_EEPROM_NXID
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
memset(e.errata, 0, 5);
strncpy((char *)e.errata, argv[2], 4);
#else
e.errata[0] = argv[2][0];
e.errata[1] = argv[2][1];
#endif
+ update_crc();
break;
case 'd': /* date BCD format YYMMDDhhmmss */
set_date(argv[2]);
break;
case 'p': /* MAC table size */
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:
- printf("Usage:\n%s\n", cmdtp->usage);
- break;
+ return cmd_usage(cmdtp);
}
return 0;
* This ensures that any user-saved variables are never overwritten.
*
* This function must be called after relocation.
+ *
+ * For NXID v1 EEPROMs, we support loading and up-converting the older NXID v0
+ * format. In a v0 EEPROM, there are only eight MAC addresses and the CRC is
+ * located at a different offset.
*/
int mac_read_from_eeprom(void)
{
unsigned int i;
+ u32 crc, crc_offset = offsetof(struct eeprom, crc);
+ u32 *crcp; /* Pointer to the CRC in the data read from the EEPROM */
+
+ puts("EEPROM: ");
if (read_eeprom()) {
printf("Read failed.\n");
- return -1;
+ return 0;
}
if (!is_valid) {
- printf("Invalid ID (%02x %02x %02x %02x)\n", e.id[0], e.id[1], e.id[2], e.id[3]);
- return -1;
+ printf("Invalid ID (%02x %02x %02x %02x)\n",
+ e.id[0], e.id[1], e.id[2], e.id[3]);
+ return 0;
}
- if (be32_to_cpu(e.crc) != 0xFFFFFFFF) {
- u32 crc = crc32(0, (void *)&e, sizeof(e) - 4);
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+ /*
+ * If we've read an NXID v0 EEPROM, then we need to set the CRC offset
+ * to where it is in v0.
+ */
+ if (e.version == 0)
+ crc_offset = 0x72;
+#endif
- if (crc != be32_to_cpu(e.crc)) {
- printf("CRC mismatch (%08x != %08x).\n", crc,
- be32_to_cpu(e.crc));
- return -1;
- }
+ crc = crc32(0, (void *)&e, crc_offset);
+ crcp = (void *)&e + crc_offset;
+ if (crc != be32_to_cpu(*crcp)) {
+ printf("CRC mismatch (%08x != %08x)\n", crc, be32_to_cpu(e.crc));
+ return 0;
}
- for (i = 0; i < min(4, e.mac_count); i++) {
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+ /*
+ * MAC address #9 in v1 occupies the same position as the CRC in v0.
+ * Erase it so that it's not mistaken for a MAC address. We'll
+ * update the CRC later.
+ */
+ if (e.version == 0)
+ memset(e.mac[8], 0xff, 6);
+#endif
+
+ for (i = 0; i < min(e.mac_count, (u8)MAX_NUM_PORTS); i++) {
if (memcmp(&e.mac[i], "\0\0\0\0\0\0", 6) &&
memcmp(&e.mac[i], "\xFF\xFF\xFF\xFF\xFF\xFF", 6)) {
char ethaddr[18];
}
}
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+ printf("%c%c%c%c v%u\n", e.id[0], e.id[1], e.id[2], e.id[3],
+ e.version);
+#else
+ printf("%c%c%c%c\n", e.id[0], e.id[1], e.id[2], e.id[3]);
+#endif
+
+#ifdef CONFIG_SYS_I2C_EEPROM_NXID
+ /*
+ * Now we need to upconvert the data into v1 format. We do this last so
+ * that at boot time, U-Boot will still say "NXID v0".
+ */
+ if (e.version == 0) {
+ e.version = NXID_VERSION;
+ update_crc();
+ }
+#endif
+
return 0;
}
-#ifdef CFG_I2C_EEPROM_CCID
+#ifdef CONFIG_SYS_I2C_EEPROM_CCID
/**
* get_cpu_board_revision - get the CPU board revision on 85xx boards
* This function is called before relocation, so we need to read a private
* copy of the EEPROM into a local variable on the stack.
*
- * Also, we assume that CFG_EEPROM_BUS_NUM == CFG_SPD_BUS_NUM. The global
- * variable i2c_bus_num must be compile-time initialized to CFG_SPD_BUS_NUM,
+ * Also, we assume that CONFIG_SYS_EEPROM_BUS_NUM == CONFIG_SYS_SPD_BUS_NUM. The global
+ * variable i2c_bus_num must be compile-time initialized to CONFIG_SYS_SPD_BUS_NUM,
* so that the SPD code will work. This means that all pre-relocation I2C
- * operations can only occur on the CFG_SPD_BUS_NUM bus. So if
- * CFG_EEPROM_BUS_NUM != CFG_SPD_BUS_NUM, then we can't read the EEPROM when
+ * operations can only occur on the CONFIG_SYS_SPD_BUS_NUM bus. So if
+ * CONFIG_SYS_EEPROM_BUS_NUM != CONFIG_SYS_SPD_BUS_NUM, then we can't read the EEPROM when
* this function is called. Oh well.
*/
unsigned int get_cpu_board_revision(void)
u8 minor; /* 0x05 Board revision, minor */
} be;
- i2c_read(CFG_I2C_EEPROM_ADDR, 0, CFG_I2C_EEPROM_ADDR_LEN,
+ i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
(void *)&be, sizeof(be));
if (be.id != (('C' << 24) | ('C' << 16) | ('I' << 8) | 'D'))
projects / karo-tx-uboot.git / blobdiff