conxs.c

U-boot源码 ARM7启动代码

/*
 * (C) Copyright 2007
 * Stefano Babic, DENX Gmbh, [e-mail]
 *
 * (C) Copyright 2004
 * Robert Whaley, Applied Data Systems, Inc. [e-mail]
 *
 * (C) Copyright 2002
 * Kyle Harris, Nexus Technologies, Inc. [e-mail]
 *
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <[e-mail]>
 *
 * 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 <asm/arch/pxa-regs.h>

DECLARE_GLOBAL_DATA_PTR;

#define		RH_A_PSM	(1 << 8)	/* power switching mode */
#define		RH_A_NPS	(1 << 9)	/* no power switching */

extern struct serial_device serial_ffuart_device;
extern struct serial_device serial_btuart_device;
extern struct serial_device serial_stuart_device;

/* ------------------------------------------------------------------------- */

/*
 * Miscelaneous platform dependent initialisations
 */

void usb_board_init(void)
{
	UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
		~(UHCHR_SSEP0 | UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);

	UHCHR |= UHCHR_FSBIR;

	while (UHCHR & UHCHR_FSBIR);

	UHCHR &= ~UHCHR_SSE;
	UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE);

	/* Clear any OTG Pin Hold */
	if (PSSR & PSSR_OTGPH)
		PSSR |= PSSR_OTGPH;

	UHCRHDA &= ~(RH_A_NPS);
	UHCRHDA |= RH_A_PSM;

	/* Set port power control mask bits, only 3 ports. */
	UHCRHDB |= (0x7<<17);
}

void usb_board_init_fail(void)
{
	return;
}

void usb_board_stop(void)
{
	UHCHR |= UHCHR_FHR;
	udelay(11);
	UHCHR &= ~UHCHR_FHR;

	UHCCOMS |= 1;
	udelay(10);

	CKEN &= ~CKEN10_USBHOST;

	puts("Called USB STOP\n");
	return;
}

int board_init (void)
{
	/* memory and cpu-speed are setup before relocation */
	/* so we do _nothing_ here */

	/* arch number of ConXS Board */
	gd->bd->bi_arch_number = 776;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = 0xa000003c;

	return 0;
}

int board_late_init(void)
{
#if defined(CONFIG_SERIAL_MULTI)
	char *console=getenv("boot_console");

	if ((strcmp(console,"serial_btuart") == 0) ||
		(strcmp(console,"serial_stuart") == 0) ||
		(strcmp(console,"serial_ffuart") == 0)) {
			setenv("stdout",console);
			setenv("stdin", console);
			setenv("stderr",console);
	} else {
		setenv("stdout", "serial");
		setenv("stdin", "serial");
		setenv("stderr", "serial");
	}
#endif
	return 0;
}

struct serial_device *default_serial_console (void)
{
	return &serial_ffuart_device;
}

int dram_init (void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
	gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
	gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
	gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
	gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;

	return 0;
}