hw_generic.c

pocket pc hx4700 bootloader

/*
 * Copyright (C) 2006 Pawel Kolodziejski
 *
 * Some defines are from linux 2.6 kernel sources
 *
 * 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 "types.h"
#include "setup.h"
#include "pxa-regs.h"
#include "gpio.h"

#define KEY_NONE        0
#define KEY_POWER       1
#define KEY_HOME        4
#define KEY_CALENDAR    8
#define KEY_TASKS       16
#define KEY_CONTACTS    32

unsigned long getKeys(void) {
	unsigned long gpio_keys, keys;

	keys = KEY_NONE;

	gpio_keys = *(unsigned long *)0x40E00000;
	if ((gpio_keys & 0x1) != 0x1)
		keys |= KEY_POWER;
	if ((gpio_keys & 0x4) != 0x4)
		keys |= KEY_HOME;
	if ((gpio_keys & 0x8) != 0x8)
		keys |= KEY_TASKS;
	if ((gpio_keys & 0x10) != 0x10)
		keys |= KEY_CALENDAR;
	if ((gpio_keys & 0x20) != 0x20)
		keys |= KEY_CONTACTS;

	return keys;
}

unsigned long waitForKey(void) {
	for (;;) {
		unsigned long keys = getKeys();
		if (keys != KEY_NONE)
			return keys;
		mdelay(1);
	}
}

int blue_led_on(void) {
	GPSR0 = 0x00020000;
}

int blue_led_off(void) {
	GPCR0 = 0x00020000;
}

int _delay(u32 delay) {
	u64 cur_time = OSCR;
	u32 max_time;

	if ((cur_time + delay) > 0xffffffff) {
		OSCR = 0;
		max_time = delay;
	} else {
		max_time = cur_time + delay;
	}
	while (OSCR < max_time) {};
}

int mdelay(u32 delay) {
	_delay((delay * 36864) / 10);
}

u32 gpo_local;

int gpo_set(unsigned long bits) {
	gpo_local |= bits;
	*(volatile u32 *)0x10000000 = gpo_local;
}

int gpo_clear(unsigned long bits) {
	gpo_local &= ~bits;
	*(volatile u32 *)0x10000000 = gpo_local;
}

int gpo_init(void) {
	gpo_local = 0x62878200L;
	*(volatile u32 *)0x10000000 = gpo_local;
}

int init_pm(void) {
	PGSR0 = 0x00080000;
	PGSR1 = 0x03ff0300;
	PGSR2 = 0x00010400;
	PWER = PWER_GPIO0;
	PFER = PWER_GPIO0;
	PRER = 0;
	PEDR = 0;
	PCFR = PCFR_OPDE;
}