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/*
* Miscelaneous DaVinci functions.
*
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
* Copyright (C) 2008 Lyrtech <www.lyrtech.com>
* Copyright (C) 2004 Texas Instruments.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <i2c.h>
#include <asm/arch/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
return(0);
}
static int dv_get_pllm_output(uint32_t pllm)
{
return (pllm + 1) * (CONFIG_SYS_HZ_CLOCK / 1000000);
}
void dv_display_clk_infos(void)
{
printf("ARM Clock: %dMHz\n", dv_get_pllm_output(REG(PLL1_PLLM)) / 2);
printf("DDR Clock: %dMHz\n", dv_get_pllm_output(REG(PLL2_PLLM)) /
((REG(PLL2_DIV2) & 0x1f) + 1) / 2);
}
/* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
* Returns 1 if found, 0 otherwise.
*/
int dvevm_read_mac_address(uint8_t *buf)
{
#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
/* Read MAC address. */
if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
(uint8_t *) &buf[0], 6))
goto i2cerr;
/* Check that MAC address is not null. */
if (memcmp(buf, "\0\0\0\0\0\0", 6) == 0)
goto err;
return 1; /* Found */
i2cerr:
printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
err:
#endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
return 0;
}
/* If there is a MAC address in the environment, and if it is not identical to
* the MAC address in the ROM, then a warning is printed and the MAC address
* from the environment is used.
*
* If there is no MAC address in the environment, then it will be initialized
* (silently) from the value in the ROM.
*/
void dv_configure_mac_address(uint8_t *rom_enetaddr)
{
int i;
u_int8_t env_enetaddr[6];
char *tmp = getenv("ethaddr");
char *end;
/* Read Ethernet MAC address from the U-Boot environment.
* If it is not defined, env_enetaddr[] will be cleared. */
for (i = 0; i < 6; i++) {
env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
if (tmp)
tmp = (*end) ? end+1 : end;
}
/* Check if ROM and U-Boot environment MAC addresses match. */
if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
memcmp(env_enetaddr, rom_enetaddr, 6) != 0) {
printf("Warning: MAC addresses don't match:\n");
printf(" ROM MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n",
rom_enetaddr[0], rom_enetaddr[1],
rom_enetaddr[2], rom_enetaddr[3],
rom_enetaddr[4], rom_enetaddr[5]);
printf(" \"ethaddr\" value: %02X:%02X:%02X:%02X:%02X:%02X\n",
env_enetaddr[0], env_enetaddr[1],
env_enetaddr[2], env_enetaddr[3],
env_enetaddr[4], env_enetaddr[5]) ;
debug("### Using MAC address from environment\n");
}
if (!tmp) {
char ethaddr[20];
/* There is no MAC address in the environment, so we initialize
* it from the value in the ROM. */
sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
rom_enetaddr[0], rom_enetaddr[1],
rom_enetaddr[2], rom_enetaddr[3],
rom_enetaddr[4], rom_enetaddr[5]) ;
debug("### Setting environment from ROM MAC address = \"%s\"\n",
ethaddr);
setenv("ethaddr", ethaddr);
}
}
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