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Hugo Villeneuve4e352ef2008-07-11 15:10:13 -04001/*
2 * Miscelaneous DaVinci functions.
3 *
4 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
5 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
6 * Copyright (C) 2004 Texas Instruments.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26#include <common.h>
27#include <i2c.h>
David Brownellc83d2d92009-04-12 22:49:26 -070028#include <net.h>
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040029#include <asm/arch/hardware.h>
30
David Brownell45064002009-05-15 23:47:12 +020031
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040032DECLARE_GLOBAL_DATA_PTR;
33
34int dram_init(void)
35{
36 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
37 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
38
39 return(0);
40}
41
David Brownellc83d2d92009-04-12 22:49:26 -070042#ifdef CONFIG_DRIVER_TI_EMAC
43
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040044/* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
45 * Returns 1 if found, 0 otherwise.
46 */
47int dvevm_read_mac_address(uint8_t *buf)
48{
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020049#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040050 /* Read MAC address. */
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020051 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040052 (uint8_t *) &buf[0], 6))
53 goto i2cerr;
54
David Brownellc83d2d92009-04-12 22:49:26 -070055 /* Check that MAC address is valid. */
56 if (!is_valid_ether_addr(buf))
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040057 goto err;
58
59 return 1; /* Found */
60
61i2cerr:
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020062 printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040063err:
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +020064#endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040065
66 return 0;
67}
68
69/* If there is a MAC address in the environment, and if it is not identical to
David Brownellc83d2d92009-04-12 22:49:26 -070070 * the MAC address in the EEPROM, then a warning is printed and the MAC address
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040071 * from the environment is used.
72 *
73 * If there is no MAC address in the environment, then it will be initialized
David Brownellc83d2d92009-04-12 22:49:26 -070074 * (silently) from the value in the EEPROM.
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040075 */
76void dv_configure_mac_address(uint8_t *rom_enetaddr)
77{
78 int i;
79 u_int8_t env_enetaddr[6];
80 char *tmp = getenv("ethaddr");
81 char *end;
82
83 /* Read Ethernet MAC address from the U-Boot environment.
84 * If it is not defined, env_enetaddr[] will be cleared. */
85 for (i = 0; i < 6; i++) {
86 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
87 if (tmp)
88 tmp = (*end) ? end+1 : end;
89 }
90
David Brownellc83d2d92009-04-12 22:49:26 -070091 /* Check if EEPROM and U-Boot environment MAC addresses match. */
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040092 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
93 memcmp(env_enetaddr, rom_enetaddr, 6) != 0) {
94 printf("Warning: MAC addresses don't match:\n");
David Brownellc83d2d92009-04-12 22:49:26 -070095 printf(" EEPROM MAC address: %pM\n", rom_enetaddr);
96 printf(" \"ethaddr\" value: %pM\n", env_enetaddr) ;
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -040097 debug("### Using MAC address from environment\n");
98 }
99 if (!tmp) {
100 char ethaddr[20];
101
102 /* There is no MAC address in the environment, so we initialize
David Brownellc83d2d92009-04-12 22:49:26 -0700103 * it from the value in the EEPROM. */
104 sprintf(ethaddr, "%pM", rom_enetaddr) ;
105 debug("### Setting environment from EEPROM MAC address = \"%s\"\n",
Hugo Villeneuve4e352ef2008-07-11 15:10:13 -0400106 ethaddr);
107 setenv("ethaddr", ethaddr);
108 }
109}
David Brownellc83d2d92009-04-12 22:49:26 -0700110
111#endif /* DAVINCI_EMAC */