mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-06 02:03:52 +09:00
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>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
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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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*
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* Copyright (C) 2004 Texas Instruments.
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*
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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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*/
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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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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_DAVINCI_EVM;
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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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/* Configure AEMIF pins (although this should be configured at boot time
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* with pull-up/pull-down resistors) */
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REG(PINMUX0) = 0x00000c1f;
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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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lpsc_on(DAVINCI_LPSC_USB);
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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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int misc_init_r(void)
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{
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uint8_t video_mode;
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uint8_t eeprom_enetaddr[6];
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dv_display_clk_infos();
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/* Read Ethernet MAC address from EEPROM if available. */
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if (dvevm_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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i2c_read(0x39, 0x00, 1, &video_mode, 1);
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setenv("videostd", ((video_mode & 0x80) ? "pal" : "ntsc"));
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return(0);
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}
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#ifdef CONFIG_USB_DAVINCI
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/* IO Expander I2C address and USB VBUS enable mask */
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#define IOEXP_I2C_ADDR 0x3A
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#define IOEXP_VBUSEN_MASK 1
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/*
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* This function enables USB VBUS by writting to IO expander using I2C.
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* Note that the I2C is already initialized at this stage. This
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* function is used by davinci specific USB wrapper code.
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*/
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void enable_vbus(void)
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{
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uchar data; /* IO Expander data to enable VBUS */
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/* Write to IO expander to enable VBUS */
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i2c_read(IOEXP_I2C_ADDR, 0, 0, &data, 1);
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data &= ~IOEXP_VBUSEN_MASK;
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i2c_write(IOEXP_I2C_ADDR, 0, 0, &data, 1);
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}
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#endif
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