2 * Miscelaneous DaVinci functions.
4 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
5 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
6 * Copyright (C) 2004 Texas Instruments.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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.
29 #include <asm/arch/hardware.h>
31 DECLARE_GLOBAL_DATA_PTR;
35 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
36 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
41 static int dv_get_pllm_output(uint32_t pllm)
43 return (pllm + 1) * (CONFIG_SYS_HZ_CLOCK / 1000000);
46 void dv_display_clk_infos(void)
48 printf("ARM Clock: %dMHz\n", dv_get_pllm_output(REG(PLL1_PLLM)) / 2);
49 printf("DDR Clock: %dMHz\n", dv_get_pllm_output(REG(PLL2_PLLM)) /
50 ((REG(PLL2_DIV2) & 0x1f) + 1) / 2);
53 #ifdef CONFIG_DRIVER_TI_EMAC
55 /* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
56 * Returns 1 if found, 0 otherwise.
58 int dvevm_read_mac_address(uint8_t *buf)
60 #ifdef CONFIG_SYS_I2C_EEPROM_ADDR
61 /* Read MAC address. */
62 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
63 (uint8_t *) &buf[0], 6))
66 /* Check that MAC address is valid. */
67 if (!is_valid_ether_addr(buf))
73 printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
75 #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
80 /* If there is a MAC address in the environment, and if it is not identical to
81 * the MAC address in the EEPROM, then a warning is printed and the MAC address
82 * from the environment is used.
84 * If there is no MAC address in the environment, then it will be initialized
85 * (silently) from the value in the EEPROM.
87 void dv_configure_mac_address(uint8_t *rom_enetaddr)
90 u_int8_t env_enetaddr[6];
91 char *tmp = getenv("ethaddr");
94 /* Read Ethernet MAC address from the U-Boot environment.
95 * If it is not defined, env_enetaddr[] will be cleared. */
96 for (i = 0; i < 6; i++) {
97 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
99 tmp = (*end) ? end+1 : end;
102 /* Check if EEPROM and U-Boot environment MAC addresses match. */
103 if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
104 memcmp(env_enetaddr, rom_enetaddr, 6) != 0) {
105 printf("Warning: MAC addresses don't match:\n");
106 printf(" EEPROM MAC address: %pM\n", rom_enetaddr);
107 printf(" \"ethaddr\" value: %pM\n", env_enetaddr) ;
108 debug("### Using MAC address from environment\n");
113 /* There is no MAC address in the environment, so we initialize
114 * it from the value in the EEPROM. */
115 sprintf(ethaddr, "%pM", rom_enetaddr) ;
116 debug("### Setting environment from EEPROM MAC address = \"%s\"\n",
118 setenv("ethaddr", ethaddr);
122 #endif /* DAVINCI_EMAC */