1. 根目录:
2. arch
3. arm
4. mach-imx
5. mm-imx5.c

/*
 * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * The code contained herein is licensed under the GNU General Public
 * License.  You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 *
 * Create static mapping between physical to virtual memory.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/pinctrl/machine.h>
#include <linux/of_address.h>

#include <asm/mach/map.h>

#include "common.h"
#include "devices/devices-common.h"
#include "hardware.h"
#include "iomux-v3.h"

/*
 * Define the MX51 memory map.
 */
static struct map_desc mx51_io_desc[] __initdata = {
	imx_map_entry(MX51, TZIC, MT_DEVICE),
	imx_map_entry(MX51, IRAM, MT_DEVICE),
	imx_map_entry(MX51, AIPS1, MT_DEVICE),
	imx_map_entry(MX51, SPBA0, MT_DEVICE),
	imx_map_entry(MX51, AIPS2, MT_DEVICE),
};

/*
 * Define the MX53 memory map.
 */
static struct map_desc mx53_io_desc[] __initdata = {
	imx_map_entry(MX53, TZIC, MT_DEVICE),
	imx_map_entry(MX53, AIPS1, MT_DEVICE),
	imx_map_entry(MX53, SPBA0, MT_DEVICE),
	imx_map_entry(MX53, AIPS2, MT_DEVICE),
};

/*
 * This function initializes the memory map. It is called during the
 * system startup to create static physical to virtual memory mappings
 * for the IO modules.
 */
void __init mx51_map_io(void)
{
	iotable_init(mx51_io_desc, ARRAY_SIZE(mx51_io_desc));
}

void __init mx53_map_io(void)
{
	iotable_init(mx53_io_desc, ARRAY_SIZE(mx53_io_desc));
}

/*
 * The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
 * the Freescale marketing division. However this did not remove the
 * hardware from the chip which still needs to be configured for proper
 * IPU support.
 */
static void __init imx51_ipu_mipi_setup(void)
{
	void __iomem *hsc_addr;
	hsc_addr = MX51_IO_ADDRESS(MX51_MIPI_HSC_BASE_ADDR);

	/* setup MIPI module to legacy mode */
	__raw_writel(0xf00, hsc_addr);

	/* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
	__raw_writel(__raw_readl(hsc_addr + 0x800) | 0x30ff,
		hsc_addr + 0x800);
}

void __init imx51_init_early(void)
{
	imx51_ipu_mipi_setup();
	mxc_set_cpu_type(MXC_CPU_MX51);
	mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
	imx_src_init();
}

void __init imx53_init_early(void)
{
	mxc_set_cpu_type(MXC_CPU_MX53);
	imx_src_init();
}

void __init mx51_init_irq(void)
{
	tzic_init_irq(MX51_IO_ADDRESS(MX51_TZIC_BASE_ADDR));
}

void __init mx53_init_irq(void)
{
	struct device_node *np;
	void __iomem *base;

	np = of_find_compatible_node(NULL, NULL, "fsl,imx53-tzic");
	base = of_iomap(np, 0);
	WARN_ON(!base);

	tzic_init_irq(base);
}

static struct sdma_platform_data imx51_sdma_pdata __initdata = {
	.fw_name = "sdma-imx51.bin",
};

static const struct resource imx51_audmux_res[] __initconst = {
	DEFINE_RES_MEM(MX51_AUDMUX_BASE_ADDR, SZ_16K),
};

void __init imx51_soc_init(void)
{
	mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR));
	mxc_device_init();

	/* i.mx51 has the i.mx35 type gpio */
	mxc_register_gpio("imx35-gpio", 0, MX51_GPIO1_BASE_ADDR, SZ_16K, MX51_INT_GPIO1_LOW, MX51_INT_GPIO1_HIGH);
	mxc_register_gpio("imx35-gpio", 1, MX51_GPIO2_BASE_ADDR, SZ_16K, MX51_INT_GPIO2_LOW, MX51_INT_GPIO2_HIGH);
	mxc_register_gpio("imx35-gpio", 2, MX51_GPIO3_BASE_ADDR, SZ_16K, MX51_INT_GPIO3_LOW, MX51_INT_GPIO3_HIGH);
	mxc_register_gpio("imx35-gpio", 3, MX51_GPIO4_BASE_ADDR, SZ_16K, MX51_INT_GPIO4_LOW, MX51_INT_GPIO4_HIGH);

	pinctrl_provide_dummies();

	/* i.mx51 has the i.mx35 type sdma */
	imx_add_imx_sdma("imx35-sdma", MX51_SDMA_BASE_ADDR, MX51_INT_SDMA, &imx51_sdma_pdata);

	/* Setup AIPS registers */
	imx_set_aips(MX51_IO_ADDRESS(MX51_AIPS1_BASE_ADDR));
	imx_set_aips(MX51_IO_ADDRESS(MX51_AIPS2_BASE_ADDR));

	/* i.mx51 has the i.mx31 type audmux */
	platform_device_register_simple("imx31-audmux", 0, imx51_audmux_res,
					ARRAY_SIZE(imx51_audmux_res));
}

void __init imx51_init_late(void)
{
	mx51_neon_fixup();
	imx5_pm_init();
}

void __init imx53_init_late(void)
{
	imx5_pm_init();
}