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127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/*
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* Miscelaneous DaVinci functions.
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*
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* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
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* Copyright (C) 2008 Lyrtech <www.lyrtech.com>
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* Copyright (C) 2004 Texas Instruments.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/arch/hardware.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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return(0);
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}
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static int dv_get_pllm_output(uint32_t pllm)
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{
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return (pllm + 1) * (CONFIG_SYS_HZ_CLOCK / 1000000);
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}
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void dv_display_clk_infos(void)
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{
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printf("ARM Clock: %dMHz\n", dv_get_pllm_output(REG(PLL1_PLLM)) / 2);
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printf("DDR Clock: %dMHz\n", dv_get_pllm_output(REG(PLL2_PLLM)) /
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((REG(PLL2_DIV2) & 0x1f) + 1) / 2);
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}
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/* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
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* Returns 1 if found, 0 otherwise.
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*/
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int dvevm_read_mac_address(uint8_t *buf)
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{
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#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
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/* Read MAC address. */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
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(uint8_t *) &buf[0], 6))
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goto i2cerr;
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/* Check that MAC address is not null. */
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if (memcmp(buf, "\0\0\0\0\0\0", 6) == 0)
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goto err;
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return 1; /* Found */
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i2cerr:
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printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
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err:
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#endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
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return 0;
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}
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/* If there is a MAC address in the environment, and if it is not identical to
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* the MAC address in the ROM, then a warning is printed and the MAC address
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* from the environment is used.
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*
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* If there is no MAC address in the environment, then it will be initialized
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* (silently) from the value in the ROM.
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*/
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void dv_configure_mac_address(uint8_t *rom_enetaddr)
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{
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int i;
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u_int8_t env_enetaddr[6];
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char *tmp = getenv("ethaddr");
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char *end;
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/* Read Ethernet MAC address from the U-Boot environment.
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* If it is not defined, env_enetaddr[] will be cleared. */
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for (i = 0; i < 6; i++) {
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env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
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if (tmp)
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tmp = (*end) ? end+1 : end;
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}
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/* Check if ROM and U-Boot environment MAC addresses match. */
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if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
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memcmp(env_enetaddr, rom_enetaddr, 6) != 0) {
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printf("Warning: MAC addresses don't match:\n");
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printf(" ROM MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n",
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rom_enetaddr[0], rom_enetaddr[1],
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rom_enetaddr[2], rom_enetaddr[3],
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rom_enetaddr[4], rom_enetaddr[5]);
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printf(" \"ethaddr\" value: %02X:%02X:%02X:%02X:%02X:%02X\n",
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env_enetaddr[0], env_enetaddr[1],
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env_enetaddr[2], env_enetaddr[3],
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env_enetaddr[4], env_enetaddr[5]) ;
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debug("### Using MAC address from environment\n");
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}
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if (!tmp) {
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char ethaddr[20];
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/* There is no MAC address in the environment, so we initialize
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* it from the value in the ROM. */
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sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
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rom_enetaddr[0], rom_enetaddr[1],
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rom_enetaddr[2], rom_enetaddr[3],
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rom_enetaddr[4], rom_enetaddr[5]) ;
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debug("### Setting environment from ROM MAC address = \"%s\"\n",
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ethaddr);
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setenv("ethaddr", ethaddr);
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}
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}
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