mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 03:08:31 +00:00
0cd18fa982
Taken all the duplicated code for enabling common modules and apply software workarounds from the board specific code into common functions. Also added comments explaining the workarounds (from TI errata documents) and replaced some numerical bit numbers with more meaningful defines. Signed-off-by: Hugo Villeneuve <hugo.villeneuve@lyrtech.com>
153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/*
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* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
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*
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* Copyright (C) 2008 Lyrtech <www.lyrtech.com>
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* Copyright (C) 2008 Philip Balister, OpenSDR <philip@opensdr.com>
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*
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* Parts are shamelessly stolen from various TI sources, original copyright
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* follows:
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*
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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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#include "../common/psc.h"
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#include "../common/misc.h"
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#define DAVINCI_A3CR (0x01E00014) /* EMIF-A CS3 config register. */
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#define DAVINCI_A3CR_VAL (0x3FFFFFFD) /* EMIF-A CS3 value for FPGA. */
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#define INTEGRITY_SYSCFG_OFFSET 0x7E8
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#define INTEGRITY_CHECKWORD_OFFSET 0x7F8
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#define INTEGRITY_CHECKWORD_VALUE 0x10ADBEEF
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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/* arch number of the board */
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gd->bd->bi_arch_number = MACH_TYPE_SFFSDR;
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/* address of boot parameters */
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gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
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davinci_errata_workarounds();
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/* Power on required peripherals */
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lpsc_on(DAVINCI_LPSC_GPIO);
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#if !defined(CONFIG_SYS_USE_DSPLINK)
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/* Powerup the DSP */
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dsp_on();
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#endif /* CONFIG_SYS_USE_DSPLINK */
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davinci_enable_uart0();
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davinci_enable_emac();
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davinci_enable_i2c();
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lpsc_on(DAVINCI_LPSC_TIMER1);
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timer_init();
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return(0);
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}
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/* Read ethernet MAC address from Integrity data structure inside EEPROM.
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* Returns 1 if found, 0 otherwise.
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*/
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static int sffsdr_read_mac_address(uint8_t *buf)
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{
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u_int32_t value, mac[2], address;
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/* Read Integrity data structure checkword. */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_CHECKWORD_OFFSET,
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CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
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goto err;
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if (value != INTEGRITY_CHECKWORD_VALUE)
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return 0;
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/* Read SYSCFG structure offset. */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_SYSCFG_OFFSET,
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CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
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goto err;
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address = 0x800 + (int) value; /* Address of SYSCFG structure. */
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/* Read NET CONFIG structure offset. */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
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CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
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goto err;
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address = 0x800 + (int) value; /* Address of NET CONFIG structure. */
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address += 12; /* Address of NET INTERFACE CONFIG structure. */
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/* Read NET INTERFACE CONFIG 2 structure offset. */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
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CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
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goto err;
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address = 0x800 + 16 + (int) value; /* Address of NET INTERFACE
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* CONFIG 2 structure. */
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/* Read MAC address. */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
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CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &mac[0], 8))
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goto err;
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buf[0] = mac[0] >> 24;
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buf[1] = mac[0] >> 16;
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buf[2] = mac[0] >> 8;
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buf[3] = mac[0];
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buf[4] = mac[1] >> 24;
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buf[5] = mac[1] >> 16;
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return 1; /* Found */
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err:
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printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
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return 0;
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}
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/* Platform dependent initialisation. */
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int misc_init_r(void)
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{
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uint8_t i2cbuf;
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uint8_t eeprom_enetaddr[6];
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/* EMIF-A CS3 configuration for FPGA. */
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REG(DAVINCI_A3CR) = DAVINCI_A3CR_VAL;
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dv_display_clk_infos();
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/* Configure I2C switch (PCA9543) to enable channel 0. */
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i2cbuf = CONFIG_SYS_I2C_PCA9543_ENABLE_CH0;
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if (i2c_write(CONFIG_SYS_I2C_PCA9543_ADDR, 0,
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CONFIG_SYS_I2C_PCA9543_ADDR_LEN, &i2cbuf, 1)) {
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printf("Write to MUX @ 0x%02x failed\n", CONFIG_SYS_I2C_PCA9543_ADDR);
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return 1;
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}
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/* Read Ethernet MAC address from EEPROM if available. */
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if (sffsdr_read_mac_address(eeprom_enetaddr))
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dv_configure_mac_address(eeprom_enetaddr);
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if (!eth_hw_init())
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printf("Ethernet init failed\n");
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return(0);
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}
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