mirror of
https://github.com/AsahiLinux/u-boot
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7b37a27e14
This patch proposes to migrate the davinci_emac driver to using the eth_device->write_hwaddr function pointer as suggested by Ben Warren. All the davinci boards had the behaviour, prior to this patch, of sync'ing the environment variable enetaddr with the MAC address read from non-volatile storage on boot -- when the two locations disagreed, the environment variable value took precendence. This patch keeps the same behaviour but lets eth_initialize take care of it. This patch refactors davinci_emac setup in the boards so that the MAC address is read from non-volatile storage into the environment variable and then the environment variable value is use in eth_intialize. The only exception is the direct call to davinci_eth_set_mac_addr made by the da830evm board init which was changed into an assignment of the enetaddr field. Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca> Tested-by: Nick Thompson <nick.thompson@ge.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
103 lines
2.8 KiB
C
103 lines
2.8 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/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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/* Read Ethernet MAC address from EEPROM if available. */
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if (dvevm_read_mac_address(eeprom_enetaddr))
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davinci_sync_env_enetaddr(eeprom_enetaddr);
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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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