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emu.c

/*
 * emu.c
 *
 * ETM and ETB CoreSight components' resources as found in OMAP3xxx.
 *
 * Copyright (C) 2009 Nokia Corporation.
 * Alexander Shishkin
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alexander Shishkin");

/* Cortex CoreSight components within omap3xxx EMU */
#define ETM_BASE  (L4_EMU_34XX_PHYS + 0x10000)
#define DBG_BASE  (L4_EMU_34XX_PHYS + 0x11000)
#define ETB_BASE  (L4_EMU_34XX_PHYS + 0x1b000)
#define DAPCTL          (L4_EMU_34XX_PHYS + 0x1d000)

static struct amba_device omap3_etb_device = {
      .dev        = {
            .init_name = "etb",
      },
      .res        = {
            .start      = ETB_BASE,
            .end  = ETB_BASE + SZ_4K - 1,
            .flags      = IORESOURCE_MEM,
      },
      .periphid   = 0x000bb907,
};

static struct amba_device omap3_etm_device = {
      .dev        = {
            .init_name = "etm",
      },
      .res        = {
            .start      = ETM_BASE,
            .end  = ETM_BASE + SZ_4K - 1,
            .flags      = IORESOURCE_MEM,
      },
      .periphid   = 0x102bb921,
};

static int __init emu_init(void)
{
      if (!cpu_is_omap34xx())
            return -ENODEV;

      amba_device_register(&omap3_etb_device, &iomem_resource);
      amba_device_register(&omap3_etm_device, &iomem_resource);

      return 0;
}

subsys_initcall(emu_init);


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