+// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright 2006, 2008-2009 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
*/
#include <common.h>
#include <command.h>
+#include <env.h>
#include <i2c.h>
+#include <init.h>
#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <u-boot/crc.h>
#ifdef CONFIG_SYS_I2C_EEPROM_CCID
#include "../common/eeprom.h"
#endif
#ifdef CONFIG_SYS_I2C_EEPROM_NXID
-#define MAX_NUM_PORTS 8
-#define NXID_VERSION 0
+/* 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
-
-#ifdef CONFIG_SYS_I2C_EEPROM_NXID_1
-#define CONFIG_SYS_I2C_EEPROM_NXID
-#define MAX_NUM_PORTS 23
#define NXID_VERSION 1
#endif
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 - x MAC addresses */
- u32 crc; /* x+1 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;
/* EEPROM tag ID, either CCID or 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));
+ be32_to_cpu(e.version));
#else
printf("ID: %c%c%c%c\n", e.id[0], e.id[1], e.id[2], e.id[3]);
#endif
e.date[3] & 0x80 ? "PM" : "");
/* Show MAC addresses */
- for (i = 0; i < min(e.mac_count, MAX_NUM_PORTS); i++) {
+ for (i = 0; i < min(e.mac_count, (u8)MAX_NUM_PORTS); i++) {
u8 *p = e.mac[i];
{
int ret;
#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+#ifndef CONFIG_DM_I2C
unsigned int bus;
#endif
+#endif
if (has_been_read)
return 0;
#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+#ifndef CONFIG_DM_I2C
bus = i2c_get_bus_num();
i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM);
#endif
+#endif
- ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
- (void *)&e, sizeof(e));
+#ifndef CONFIG_DM_I2C
+ ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ (void *)&e, sizeof(e));
+#else
+ struct udevice *dev;
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+ ret = i2c_get_chip_for_busnum(CONFIG_SYS_EEPROM_BUS_NUM,
+ CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN, &dev);
+#else
+ ret = i2c_get_chip_for_busnum(0, CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN, &dev);
+#endif
+ if (!ret)
+ ret = dm_i2c_read(dev, 0, (void *)&e, sizeof(e));
+#endif
#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+#ifndef CONFIG_DM_I2C
i2c_set_bus_num(bus);
#endif
+#endif
#ifdef DEBUG
show_eeprom();
int i;
void *p;
#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+#ifndef CONFIG_DM_I2C
unsigned int bus;
#endif
+#endif
/* Set the reserved values to 0xFF */
#ifdef CONFIG_SYS_I2C_EEPROM_NXID
#endif
update_crc();
+#ifndef CONFIG_DM_I2C
#ifdef CONFIG_SYS_EEPROM_BUS_NUM
bus = i2c_get_bus_num();
i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM);
#endif
+#endif
/*
* The AT24C02 datasheet says that data can only be written in page
* 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((sizeof(e) - i), 8));
+#ifndef CONFIG_DM_I2C
+ ret = i2c_write(CONFIG_SYS_I2C_EEPROM_ADDR, i,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ p, min((int)(sizeof(e) - i), 8));
+#else
+ struct udevice *dev;
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+ ret = i2c_get_chip_for_busnum(CONFIG_SYS_EEPROM_BUS_NUM,
+ CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ &dev);
+#else
+ ret = i2c_get_chip_for_busnum(0, CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ &dev);
+#endif
+ if (!ret)
+ ret = dm_i2c_write(dev, i, p, min((int)(sizeof(e) - i),
+ 8));
+#endif
if (ret)
break;
udelay(5000); /* 5ms write cycle timing */
/* Verify the write by reading back the EEPROM and comparing */
struct eeprom e2;
+#ifndef CONFIG_DM_I2C
ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0,
- CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (void *)&e2, sizeof(e2));
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ (void *)&e2, sizeof(e2));
+#else
+ struct udevice *dev;
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+ ret = i2c_get_chip_for_busnum(CONFIG_SYS_EEPROM_BUS_NUM,
+ CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ &dev);
+#else
+ ret = i2c_get_chip_for_busnum(0, CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ &dev);
+#endif
+ if (!ret)
+ ret = dm_i2c_read(dev, 0, (void *)&e2, sizeof(e2));
+#endif
if (!ret && memcmp(&e, &e2, sizeof(e)))
ret = -1;
}
+#ifndef CONFIG_DM_I2C
#ifdef CONFIG_SYS_EEPROM_BUS_NUM
i2c_set_bus_num(bus);
#endif
+#endif
if (ret) {
printf("Programming failed.\n");
update_crc();
}
-int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_mac(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
char cmd;
if (cmd == 'i') {
#ifdef CONFIG_SYS_I2C_EEPROM_NXID
memcpy(e.id, "NXID", sizeof(e.id));
- e.version = NXID_VERSION;
+ e.version = cpu_to_be32(NXID_VERSION);
#else
memcpy(e.id, "CCID", sizeof(e.id));
#endif
+ update_crc();
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;
+ 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;
+ return 0;
}
- crc = crc32(0, (void *)&e, sizeof(e) - 4);
- if (crc != be32_to_cpu(e.crc)) {
+#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
+
+ 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 -1;
+ return 0;
}
- for (i = 0; i < min(e.mac_count, MAX_NUM_PORTS); 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];
/* Only initialize environment variables that are blank
* (i.e. have not yet been set)
*/
- if (!getenv(enetvar))
- setenv(enetvar, ethaddr);
+ if (!env_get(enetvar))
+ env_set(enetvar, ethaddr);
}
}
#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],
- be32_to_cpu(e.version));
+ be32_to_cpu(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 = cpu_to_be32(NXID_VERSION);
+ update_crc();
+ }
+#endif
+
return 0;
}
u8 minor; /* 0x05 Board revision, minor */
} be;
+#ifndef CONFIG_DM_I2C
i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
(void *)&be, sizeof(be));
+#else
+ struct udevice *dev;
+ int ret;
+#ifdef CONFIG_SYS_EEPROM_BUS_NUM
+ ret = i2c_get_chip_for_busnum(CONFIG_SYS_EEPROM_BUS_NUM,
+ CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ &dev);
+#else
+ ret = i2c_get_chip_for_busnum(0, CONFIG_SYS_I2C_EEPROM_ADDR,
+ CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
+ &dev);
+#endif
+ if (!ret)
+ dm_i2c_read(dev, 0, (void *)&be, sizeof(be));
+#endif
if (be.id != (('C' << 24) | ('C' << 16) | ('I' << 8) | 'D'))
return MPC85XX_CPU_BOARD_REV(0, 0);