arch/arm/mach-omap2/emu.c

   1 /*
   2  * emu.c
   3  *
   4  * ETM and ETB CoreSight components' resources as found in OMAP3xxx.
   5  *
   6  * Copyright (C) 2009 Nokia Corporation.
   7  * Alexander Shishkin
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/types.h>
  17 #include <linux/module.h>
  18 #include <linux/device.h>
  19 #include <linux/amba/bus.h>
  20 #include <linux/io.h>
  21 #include <linux/clk.h>
  22 #include <linux/err.h>
  23
  24 #include "soc.h"
  25 #include "iomap.h"
  26
  27 MODULE_LICENSE("GPL");
  28 MODULE_AUTHOR("Alexander Shishkin");
  29
  30 /* Cortex CoreSight components within omap3xxx EMU */
  31 #define ETM_BASE        (L4_EMU_34XX_PHYS + 0x10000)
  32 #define DBG_BASE        (L4_EMU_34XX_PHYS + 0x11000)
  33 #define ETB_BASE        (L4_EMU_34XX_PHYS + 0x1b000)
  34 #define DAPCTL          (L4_EMU_34XX_PHYS + 0x1d000)
  35
  36 static AMBA_APB_DEVICE(omap3_etb, "etb", 0x000bb907, ETB_BASE, { }, NULL);
  37 static AMBA_APB_DEVICE(omap3_etm, "etm", 0x102bb921, ETM_BASE, { }, NULL);
  38
  39 static int __init emu_init(void)
  40 {
  41         if (!cpu_is_omap34xx())
  42                 return -ENODEV;
  43
  44         amba_device_register(&omap3_etb_device, &iomem_resource);
  45         amba_device_register(&omap3_etm_device, &iomem_resource);
  46
  47         return 0;
  48 }
  49
  50 omap_subsys_initcall(emu_init);