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/*
* (C) Copyright 2004-2008
* Texas Instruments, <www.ti.com>
*
* Author :
* Manikandan Pillai <mani.pillai@ti.com>
*
* Derived from Beagle Board and 3430 SDP code by
* Richard Woodruff <r-woodruff2@ti.com>
* Syed Mohammed Khasim <khasim@ti.com>
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <netdev.h>
#include <asm/io.h>
#include <asm/arch/mem.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/gpio.h>
#include <i2c.h>
#include <asm/mach-types.h>
#include "evm.h"
#define OMAP3EVM_GPIO_ETH_RST_GEN1 64
#define OMAP3EVM_GPIO_ETH_RST_GEN2 7
DECLARE_GLOBAL_DATA_PTR;
static u32 omap3_evm_version;
u32 get_omap3_evm_rev(void)
{
return omap3_evm_version;
}
static void omap3_evm_get_revision(void)
{
#if defined(CONFIG_CMD_NET)
/*
* Board revision can be ascertained only by identifying
* the Ethernet chipset.
*/
unsigned int smsc_id;
/* Ethernet PHY ID is stored at ID_REV register */
smsc_id = readl(CONFIG_SMC911X_BASE + 0x50) & 0xFFFF0000;
printf("Read back SMSC id 0x%x\n", smsc_id);
switch (smsc_id) {
/* SMSC9115 chipset */
case 0x01150000:
omap3_evm_version = OMAP3EVM_BOARD_GEN_1;
break;
/* SMSC 9220 chipset */
case 0x92200000:
default:
omap3_evm_version = OMAP3EVM_BOARD_GEN_2;
}
#else
#if defined(CONFIG_STATIC_BOARD_REV)
/*
* Look for static defintion of the board revision
*/
omap3_evm_version = CONFIG_STATIC_BOARD_REV;
#else
/*
* Fallback to the default above.
*/
omap3_evm_version = OMAP3EVM_BOARD_GEN_2;
#endif
#endif /* CONFIG_CMD_NET */
}
#ifdef CONFIG_USB_OMAP3
/*
* MUSB port on OMAP3EVM Rev >= E requires extvbus programming.
*/
u8 omap3_evm_need_extvbus(void)
{
u8 retval = 0;
if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2)
retval = 1;
return retval;
}
#endif
/*
* Routine: board_init
* Description: Early hardware init.
*/
int board_init(void)
{
gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
/* board id for Linux */
gd->bd->bi_arch_number = MACH_TYPE_OMAP3EVM;
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
return 0;
}
/*
* Routine: misc_init_r
* Description: Init ethernet (done here so udelay works)
*/
int misc_init_r(void)
{
#ifdef CONFIG_DRIVER_OMAP34XX_I2C
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
#if defined(CONFIG_CMD_NET)
setup_net_chip();
#endif
omap3_evm_get_revision();
#if defined(CONFIG_CMD_NET)
reset_net_chip();
#endif
dieid_num_r();
return 0;
}
/*
* Routine: set_muxconf_regs
* Description: Setting up the configuration Mux registers specific to the
* hardware. Many pins need to be moved from protect to primary
* mode.
*/
void set_muxconf_regs(void)
{
MUX_EVM();
}
/*
* Routine: setup_net_chip
* Description: Setting up the configuration GPMC registers specific to the
* Ethernet hardware.
*/
static void setup_net_chip(void)
{
struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
/* Configure GPMC registers */
writel(NET_GPMC_CONFIG1, &gpmc_cfg->cs[5].config1);
writel(NET_GPMC_CONFIG2, &gpmc_cfg->cs[5].config2);
writel(NET_GPMC_CONFIG3, &gpmc_cfg->cs[5].config3);
writel(NET_GPMC_CONFIG4, &gpmc_cfg->cs[5].config4);
writel(NET_GPMC_CONFIG5, &gpmc_cfg->cs[5].config5);
writel(NET_GPMC_CONFIG6, &gpmc_cfg->cs[5].config6);
writel(NET_GPMC_CONFIG7, &gpmc_cfg->cs[5].config7);
/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
/* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
/* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
&ctrl_base->gpmc_nadv_ale);
}
/**
* Reset the ethernet chip.
*/
static void reset_net_chip(void)
{
int ret;
int rst_gpio;
if (get_omap3_evm_rev() == OMAP3EVM_BOARD_GEN_1) {
rst_gpio = OMAP3EVM_GPIO_ETH_RST_GEN1;
} else {
rst_gpio = OMAP3EVM_GPIO_ETH_RST_GEN2;
}
ret = omap_request_gpio(rst_gpio);
if (ret < 0) {
printf("Unable to get GPIO %d\n", rst_gpio);
return ;
}
/* Configure as output */
omap_set_gpio_direction(rst_gpio, 0);
/* Send a pulse on the GPIO pin */
omap_set_gpio_dataout(rst_gpio, 1);
udelay(1);
omap_set_gpio_dataout(rst_gpio, 0);
udelay(1);
omap_set_gpio_dataout(rst_gpio, 1);
}
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_SMC911X
rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
#endif
return rc;
}
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