/* * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> * * Copyright (C) 2008 Lyrtech <www.lyrtech.com> * Copyright (C) 2008 Philip Balister, OpenSDR <philip@opensdr.com> * * Parts are shamelessly stolen from various TI sources, original copyright * follows: * * 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> #include <asm/arch/davinci_misc.h> #define DAVINCI_A3CR (0x01E00014) /* EMIF-A CS3 config register. */ #define DAVINCI_A3CR_VAL (0x3FFFFFFD) /* EMIF-A CS3 value for FPGA. */ #define INTEGRITY_SYSCFG_OFFSET 0x7E8 #define INTEGRITY_CHECKWORD_OFFSET 0x7F8 #define INTEGRITY_CHECKWORD_VALUE 0x10ADBEEF DECLARE_GLOBAL_DATA_PTR; int board_init(void) { /* arch number of the board */ gd->bd->bi_arch_number = MACH_TYPE_SFFSDR; /* address of boot parameters */ gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; davinci_errata_workarounds(); /* Power on required peripherals */ lpsc_on(DAVINCI_LPSC_GPIO); #if !defined(CONFIG_SYS_USE_DSPLINK) /* Powerup the DSP */ dsp_on(); #endif /* CONFIG_SYS_USE_DSPLINK */ davinci_enable_uart0(); davinci_enable_emac(); davinci_enable_i2c(); lpsc_on(DAVINCI_LPSC_TIMER1); timer_init(); return(0); } /* Read ethernet MAC address from Integrity data structure inside EEPROM. * Returns 1 if found, 0 otherwise. */ static int sffsdr_read_mac_address(uint8_t *buf) { u_int32_t value, mac[2], address; /* Read Integrity data structure checkword. */ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_CHECKWORD_OFFSET, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4)) goto err; if (value != INTEGRITY_CHECKWORD_VALUE) return 0; /* Read SYSCFG structure offset. */ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_SYSCFG_OFFSET, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4)) goto err; address = 0x800 + (int) value; /* Address of SYSCFG structure. */ /* Read NET CONFIG structure offset. */ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4)) goto err; address = 0x800 + (int) value; /* Address of NET CONFIG structure. */ address += 12; /* Address of NET INTERFACE CONFIG structure. */ /* Read NET INTERFACE CONFIG 2 structure offset. */ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4)) goto err; address = 0x800 + 16 + (int) value; /* Address of NET INTERFACE * CONFIG 2 structure. */ /* Read MAC address. */ if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &mac[0], 8)) goto err; buf[0] = mac[0] >> 24; buf[1] = mac[0] >> 16; buf[2] = mac[0] >> 8; buf[3] = mac[0]; buf[4] = mac[1] >> 24; buf[5] = mac[1] >> 16; return 1; /* Found */ err: printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR); return 0; } /* Platform dependent initialisation. */ int misc_init_r(void) { uint8_t i2cbuf; uint8_t eeprom_enetaddr[6]; /* EMIF-A CS3 configuration for FPGA. */ REG(DAVINCI_A3CR) = DAVINCI_A3CR_VAL; /* Configure I2C switch (PCA9543) to enable channel 0. */ i2cbuf = CONFIG_SYS_I2C_PCA9543_ENABLE_CH0; if (i2c_write(CONFIG_SYS_I2C_PCA9543_ADDR, 0, CONFIG_SYS_I2C_PCA9543_ADDR_LEN, &i2cbuf, 1)) { printf("Write to MUX @ 0x%02x failed\n", CONFIG_SYS_I2C_PCA9543_ADDR); return 1; } /* Read Ethernet MAC address from EEPROM if available. */ if (sffsdr_read_mac_address(eeprom_enetaddr)) davinci_sync_env_enetaddr(eeprom_enetaddr); return(0); }