platform/copper/platform.c

/*
 * Copyright (c) 2012, Code Aurora Forum. 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 <debug.h>
#include <reg.h>
#include <platform/iomap.h>
#include <qgic.h>
#include <qtimer.h>
#include <platform/clock.h>
#include <mmu.h>
#include <arch/arm/mmu.h>
#include <smem.h>

#define MB (1024*1024)

#define MSM_IOMAP_SIZE ((MSM_IOMAP_END - MSM_IOMAP_BASE)/MB)

/* LK memory - cacheable, write through */
#define LK_MEMORY         (MMU_MEMORY_TYPE_NORMAL_WRITE_THROUGH | \
                           MMU_MEMORY_AP_READ_WRITE)

/* Peripherals - non-shared device */
#define IOMAP_MEMORY      (MMU_MEMORY_TYPE_DEVICE_SHARED | \
                           MMU_MEMORY_AP_READ_WRITE | MMU_MEMORY_XN)

mmu_section_t mmu_section_table[] = {
/*  Physical addr,    Virtual addr,    Size (in MB),    Flags */
	{MEMBASE, MEMBASE, (MEMSIZE / MB), LK_MEMORY},
	{MSM_IOMAP_BASE, MSM_IOMAP_BASE, MSM_IOMAP_SIZE, IOMAP_MEMORY},
};

void platform_early_init(void)
{
	board_init();
	platform_clock_init();
	qgic_init();
	qtimer_init();
}

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

void platform_uninit(void)
{
	qtimer_uninit();
}

/* Setup memory for this platform */
void platform_init_mmu_mappings(void)
{
	struct smem_ram_ptable ram_ptable;
	uint32_t i;
	uint32_t sections;
	uint32_t table_size = ARRAY_SIZE(mmu_section_table);

	ASSERT(smem_ram_ptable_init(&ram_ptable));

	/* Configure the MMU page entries for SDRAM and IMEM memory read
	   from the smem ram table*/
	for(i = 0; i < ram_ptable.len; i++)
    {   if((ram_ptable.parts[i].category == SDRAM) ||
           (ram_ptable.parts[i].category == IMEM))
		{
			/* Check to ensure that start address is 1MB aligned */
			ASSERT((ram_ptable.parts[i].start & 0xFFFFF) == 0);

			sections = (ram_ptable.parts[i].size) / MB;
			while(sections--) {
				arm_mmu_map_section(ram_ptable.parts[i].start +
						    sections * MB,
						    ram_ptable.parts[i].start +
						    sections * MB,
						    (MMU_MEMORY_TYPE_NORMAL_WRITE_THROUGH | \
						    MMU_MEMORY_AP_READ_WRITE | MMU_MEMORY_XN));
			}
		}
    }
	/* Configure the MMU page entries for memory read from the
	   mmu_section_table */
	for (i = 0; i < table_size; i++) {
		sections = mmu_section_table[i].num_of_sections;

		while (sections--) {
			arm_mmu_map_section(mmu_section_table[i].paddress +
					    sections * MB,
					    mmu_section_table[i].vaddress +
					    sections * MB,
					    mmu_section_table[i].flags);
		}
	}
}