+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2011
* Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.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 <hush.h>
+#include <cli_hush.h>
+#include <env.h>
#include <i2c.h>
#include "common.h"
-int ivm_calc_crc(unsigned char *buf, int len)
+#define MAC_STR_SZ 20
+
+static int ivm_calc_crc(unsigned char *buf, int len)
{
const unsigned short crc_tab[16] = {
0x0000, 0xCC01, 0xD801, 0x1400,
/* Look for the requested number of CR. */
while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
- if ((buf[addr] == '\r'))
+ if (buf[addr] == '\r')
cr++;
addr++;
}
return 0;
}
-static int calculate_mac_offset(unsigned char *valbuf, unsigned char *buf,
- int offset)
+/* take care of the possible MAC address offset and the IVM content offset */
+static int process_mac(unsigned char *valbuf, unsigned char *buf,
+ int offset, bool unique)
{
+ unsigned char mac[6];
unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
- if (offset == 0)
- return 0;
+ /* use an intermediate buffer, to not change IVM content
+ * MAC address is at offset 1
+ */
+ memcpy(mac, buf+1, 6);
- val += offset;
- buf[4] = (val >> 16) & 0xff;
- buf[5] = (val >> 8) & 0xff;
- buf[6] = val & 0xff;
- sprintf((char *)valbuf, "%pM", buf + 1);
+ /* MAC adress can be set to locally administred, this is only allowed
+ * for interfaces which have now connection to the outside. For these
+ * addresses we need to set the second bit in the first byte.
+ */
+ if (!unique)
+ mac[0] |= 0x2;
+
+ if (offset) {
+ val += offset;
+ mac[3] = (val >> 16) & 0xff;
+ mac[4] = (val >> 8) & 0xff;
+ mac[5] = val & 0xff;
+ }
+
+ sprintf((char *)valbuf, "%pM", mac);
return 0;
}
static int ivm_analyze_block2(unsigned char *buf, int len)
{
- unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
+ unsigned char valbuf[MAC_STR_SZ];
unsigned long count;
/* IVM_MAC Adress begins at offset 1 */
sprintf((char *)valbuf, "%pM", buf + 1);
ivm_set_value("IVM_MacAddress", (char *)valbuf);
- /* if an offset is defined, add it */
- calculate_mac_offset(buf, valbuf, CONFIG_PIGGY_MAC_ADRESS_OFFSET);
-#ifdef MACH_TYPE_KM_KIRKWOOD
- setenv((char *)"ethaddr", (char *)valbuf);
-#else
- if (getenv("ethaddr") == NULL)
- setenv((char *)"ethaddr", (char *)valbuf);
-#endif
-#ifdef CONFIG_KMVECT1
-/* KMVECT1 has two ethernet interfaces */
- if (getenv("eth1addr") == NULL) {
- calculate_mac_offset(buf, valbuf, 1);
- setenv((char *)"eth1addr", (char *)valbuf);
- }
-#endif
/* IVM_MacCount */
count = (buf[10] << 24) +
(buf[11] << 16) +
GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
- tmp = (unsigned char *) getenv("IVM_DeviceName");
+ tmp = (unsigned char *)env_get("IVM_DeviceName");
if (tmp) {
int len = strlen((char *)tmp);
int i = 0;
return 0;
}
-int ivm_read_eeprom(void)
+static int ivm_populate_env(unsigned char *buf, int len)
+{
+ unsigned char *page2;
+ unsigned char valbuf[MAC_STR_SZ];
+
+ /* do we have the page 2 filled ? if not return */
+ if (ivm_check_crc(buf, 2))
+ return 0;
+ page2 = &buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN*2];
+
+#ifndef CONFIG_KMTEGR1
+ /* if an offset is defined, add it */
+ process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET, true);
+ env_set((char *)"ethaddr", (char *)valbuf);
+#ifdef CONFIG_KMVECT1
+/* KMVECT1 has two ethernet interfaces */
+ process_mac(valbuf, page2, 1, true);
+ env_set((char *)"eth1addr", (char *)valbuf);
+#endif
+#else
+/* KMTEGR1 has a special setup. eth0 has no connection to the outside and
+ * gets an locally administred MAC address, eth1 is the debug interface and
+ * gets the official MAC address from the IVM
+ */
+ process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET, false);
+ env_set((char *)"ethaddr", (char *)valbuf);
+ process_mac(valbuf, page2, CONFIG_PIGGY_MAC_ADRESS_OFFSET, true);
+ env_set((char *)"eth1addr", (char *)valbuf);
+#endif
+
+ return 0;
+}
+
+int ivm_read_eeprom(unsigned char *buf, int len)
{
- uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
- char *buf;
- unsigned long dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
int ret;
- buf = getenv("EEprom_ivm");
- i2c_set_bus_num(buf ? (int)simple_strtol(buf, NULL, 10) : 0);
+ i2c_set_bus_num(CONFIG_KM_IVM_BUS);
/* add deblocking here */
i2c_make_abort();
- ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
- CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+ ret = i2c_read(CONFIG_SYS_IVM_EEPROM_ADR, 0, 1, buf, len);
if (ret != 0) {
printf("Error reading EEprom\n");
return -2;
}
- return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+ return ivm_populate_env(buf, len);
}
projects / oweals / u-boot.git / blobdiff