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/*
* Copyright (C) 2011 OMICRON electronics GmbH
*
* Based on da850evm.c. Original Copyrights follow:
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* 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 <net.h>
#include <netdev.h>
#include <watchdog.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/gpio.h>
#include <asm/arch/emif_defs.h>
#include <asm/arch/emac_defs.h>
#include <asm/arch/pinmux_defs.h>
#include <asm/arch/davinci_misc.h>
#include <asm/arch/timer_defs.h>
DECLARE_GLOBAL_DATA_PTR;
#define CALIMAIN_HWVERSION_MASK 0x7f000000
#define CALIMAIN_HWVERSION_SHIFT 24
/* Hardware version pinmux settings */
const struct pinmux_config hwversion_pins[] = {
{ pinmux(16), 8, 2 }, /* GP7[15] */
{ pinmux(16), 8, 3 }, /* GP7[14] */
{ pinmux(16), 8, 4 }, /* GP7[13] */
{ pinmux(16), 8, 5 }, /* GP7[12] */
{ pinmux(16), 8, 6 }, /* GP7[11] */
{ pinmux(16), 8, 7 }, /* GP7[10] */
{ pinmux(17), 8, 0 }, /* GP7[9] */
{ pinmux(17), 8, 1 } /* GP7[8] */
};
const struct pinmux_resource pinmuxes[] = {
PINMUX_ITEM(uart2_pins_txrx),
PINMUX_ITEM(emac_pins_mii),
PINMUX_ITEM(emac_pins_mdio),
PINMUX_ITEM(emifa_pins_nor),
PINMUX_ITEM(emifa_pins_cs2),
PINMUX_ITEM(emifa_pins_cs3),
};
const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
const struct lpsc_resource lpsc[] = {
{ DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
{ DAVINCI_LPSC_EMAC }, /* image download */
{ DAVINCI_LPSC_UART2 }, /* console */
{ DAVINCI_LPSC_GPIO },
};
const int lpsc_size = ARRAY_SIZE(lpsc);
/* read board revision from GPIO7[8..14] */
u32 get_board_rev(void)
{
lpsc_on(DAVINCI_LPSC_GPIO);
if (davinci_configure_pin_mux(hwversion_pins,
ARRAY_SIZE(hwversion_pins)) != 0)
return 0xffffffff;
return (davinci_gpio_bank67->in_data & CALIMAIN_HWVERSION_MASK)
>> CALIMAIN_HWVERSION_SHIFT;
}
/*
* determine the oscillator frequency depending on the board revision
*
* rev 0x00 ... 25 MHz oscillator
* rev 0x01 ... 24 MHz oscillator
*/
int calimain_get_osc_freq(void)
{
u32 rev;
int freq;
rev = get_board_rev();
switch (rev) {
case 0x00:
freq = 25000000;
break;
default:
freq = 24000000;
break;
}
return freq;
}
int board_init(void)
{
int val;
#ifndef CONFIG_USE_IRQ
irq_init();
#endif
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
#ifdef CONFIG_DRIVER_TI_EMAC
/* select emac MII mode */
val = readl(&davinci_syscfg_regs->cfgchip3);
val &= ~(1 << 8);
writel(val, &davinci_syscfg_regs->cfgchip3);
#endif /* CONFIG_DRIVER_TI_EMAC */
#ifdef CONFIG_HW_WATCHDOG
davinci_hw_watchdog_enable();
#endif
printf("Input clock frequency: %d Hz\n", calimain_get_osc_freq());
printf("Board revision: %d\n", get_board_rev());
return 0;
}
#ifdef CONFIG_DRIVER_TI_EMAC
/*
* Initializes on-board ethernet controllers.
*/
int board_eth_init(bd_t *bis)
{
if (!davinci_emac_initialize()) {
printf("Error: Ethernet init failed!\n");
return -1;
}
return 0;
}
#endif /* CONFIG_DRIVER_TI_EMAC */
#ifdef CONFIG_HW_WATCHDOG
void hw_watchdog_reset(void)
{
davinci_hw_watchdog_reset();
}
#endif
#if defined(CONFIG_BOOTCOUNT_LIMIT)
void bootcount_store(ulong a)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
/*
* write RTC kick register to enable write
* for RTC Scratch registers. Cratch0 and 1 are
* used for bootcount values.
*/
writel(RTC_KICK0R_WE, ®->kick0r);
writel(RTC_KICK1R_WE, ®->kick1r);
writel(a, ®->scratch0);
writel(BOOTCOUNT_MAGIC, ®->scratch1);
}
ulong bootcount_load(void)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
if (readl(®->scratch1) != BOOTCOUNT_MAGIC)
return 0;
else
return readl(®->scratch0);
}
#endif
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