platform/msm7k/platform.c

/*
 * Copyright (c) 2008, Google Inc.
 * All rights reserved.
 *
 * Copyright (c) 2009-2010, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name of Google, Inc. nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <reg.h>
#include <debug.h>
#include <kernel/thread.h>
#include <platform/debug.h>
#include <platform/iomap.h>
#include <mddi.h>
#include <dev/fbcon.h>
#include <arch/arm/mmu.h>

#define MB (1024*1024)

static struct fbcon_config *fb_config;

static uint32_t ticks_per_sec = 0;

void platform_init_interrupts(void);
void platform_init_timer();

void uart3_clock_init(void);
void uart_init(void);

void acpu_clock_init(void);

void mddi_clock_init(unsigned num, unsigned rate);

void platform_early_init(void)
{
	platform_init_interrupts();
	platform_init_timer();
}

void platform_init(void)
{
	dprintf(INFO, "platform_init()\n");

	acpu_clock_init();
}

void display_init(void)
{
#if DISPLAY_TYPE_MDDI
	fb_config = mddi_init();
	ASSERT(fb_config);
	fbcon_setup(fb_config);
#endif
#if DISPLAY_TYPE_LCDC
    fb_config = lcdc_init();
    ASSERT(fb_config);
    fbcon_setup(fb_config);
#endif
}


/* Setup memory for this platform */
void platform_init_mmu_mappings(void)
{
    uint32_t sections = 1152;

    /* Map io mapped peripherals as device non-shared memory */
    while (sections--)
    {
        arm_mmu_map_section(0x88000000 + sections*MB,
                            0x88000000 + sections*MB,
                            (MMU_MEMORY_TYPE_DEVICE_NON_SHARED |
                             MMU_MEMORY_AP_READ_WRITE));
    }
}

/* Initialize DGT timer */
void platform_init_timer(void)
{
	/* disable timer */
	writel(0, DGT_ENABLE);

	ticks_per_sec = 19200000; /* Uses TCXO (19.2 MHz) */
}

/* Returns timer ticks per sec */
uint32_t platform_tick_rate(void)
{
	return ticks_per_sec;
}