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/*
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
*
* Base on code from TI. Original Notices follow:
*
* (C) Copyright 2008, Texas Instruments, Inc. http://www.ti.com/
*
* Modified for DA8xx EVM.
*
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* Parts are shamelessly stolen from various TI sources, original copyright
* follows:
* -----------------------------------------------------------------
*
* Copyright (C) 2004 Texas Instruments.
*
* ----------------------------------------------------------------------------
* 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 <asm/arch/hardware.h>
#include <asm/arch/emif_defs.h>
#include <asm/io.h>
#include "../common/misc.h"
DECLARE_GLOBAL_DATA_PTR;
#define pinmux &davinci_syscfg_regs->pinmux
/* SPI0 pin muxer settings */
static const struct pinmux_config spi0_pins[] = {
{ pinmux[7], 1, 3 },
{ pinmux[7], 1, 4 },
{ pinmux[7], 1, 5 },
{ pinmux[7], 1, 6 },
{ pinmux[7], 1, 7 }
};
/* EMIF-A bus pins for 8-bit NAND support on CS3 */
static const struct pinmux_config emifa_nand_pins[] = {
{ pinmux[13], 1, 6 },
{ pinmux[13], 1, 7 },
{ pinmux[14], 1, 0 },
{ pinmux[14], 1, 1 },
{ pinmux[14], 1, 2 },
{ pinmux[14], 1, 3 },
{ pinmux[14], 1, 4 },
{ pinmux[14], 1, 5 },
{ pinmux[15], 1, 7 },
{ pinmux[16], 1, 0 },
{ pinmux[18], 1, 1 },
{ pinmux[18], 1, 4 },
{ pinmux[18], 1, 5 },
};
/* UART pin muxer settings */
static const struct pinmux_config uart_pins[] = {
{ pinmux[8], 2, 7 },
{ pinmux[9], 2, 0 }
};
/* I2C pin muxer settings */
static const struct pinmux_config i2c_pins[] = {
{ pinmux[9], 2, 3 },
{ pinmux[9], 2, 4 }
};
/* USB0_DRVVBUS pin muxer settings */
static const struct pinmux_config usb_pins[] = {
{ pinmux[9], 1, 1 }
};
static const struct pinmux_resource pinmuxes[] = {
#ifdef CONFIG_SPI_FLASH
PINMUX_ITEM(spi0_pins),
#endif
PINMUX_ITEM(uart_pins),
PINMUX_ITEM(i2c_pins),
#ifdef CONFIG_USB_DA8XX
PINMUX_ITEM(usb_pins),
#endif
#ifdef CONFIG_USE_NAND
PINMUX_ITEM(emifa_nand_pins),
#endif
};
int board_init(void)
{
#ifndef CONFIG_USE_IRQ
/*
* Mask all IRQs by clearing the global enable and setting
* the enable clear for all the 90 interrupts.
*/
writel(0, &davinci_aintc_regs->ger);
writel(0, &davinci_aintc_regs->hier);
writel(0xffffffff, &davinci_aintc_regs->ecr1);
writel(0xffffffff, &davinci_aintc_regs->ecr2);
writel(0xffffffff, &davinci_aintc_regs->ecr3);
#endif
#ifdef CONFIG_NAND_DAVINCI
/* EMIFA 100MHz clock select */
writel(readl(&davinci_syscfg_regs->cfgchip3) & ~2,
&davinci_syscfg_regs->cfgchip3);
/* NAND CS setup */
writel((DAVINCI_ABCR_WSETUP(0) |
DAVINCI_ABCR_WSTROBE(2) |
DAVINCI_ABCR_WHOLD(0) |
DAVINCI_ABCR_RSETUP(0) |
DAVINCI_ABCR_RSTROBE(2) |
DAVINCI_ABCR_RHOLD(0) |
DAVINCI_ABCR_TA(2) |
DAVINCI_ABCR_ASIZE_8BIT),
&davinci_emif_regs->AB2CR);
#endif
/* arch number of the board */
gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA830_EVM;
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
/*
* Power on required peripherals
* ARM does not have access by default to PSC0 and PSC1
* assuming here that the DSP bootloader has set the IOPU
* such that PSC access is available to ARM
*/
lpsc_on(DAVINCI_LPSC_AEMIF); /* NAND, NOR */
lpsc_on(DAVINCI_LPSC_SPI0); /* Serial Flash */
lpsc_on(DAVINCI_LPSC_EMAC); /* image download */
lpsc_on(DAVINCI_LPSC_UART2); /* console */
lpsc_on(DAVINCI_LPSC_GPIO);
/* setup the SUSPSRC for ARM to control emulation suspend */
writel(readl(&davinci_syscfg_regs->suspsrc) &
~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
DAVINCI_SYSCFG_SUSPSRC_UART2),
&davinci_syscfg_regs->suspsrc);
/* configure pinmux settings */
if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
return 1;
/* enable the console UART */
writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
DAVINCI_UART_PWREMU_MGMT_UTRST),
&davinci_uart2_ctrl_regs->pwremu_mgmt);
return(0);
}
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