148 lines
3.2 KiB
C
148 lines
3.2 KiB
C
/*
|
|
* 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>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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/ti-common/davinci_nand.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
|