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 MODULE_LICENSE("GPL");
  25 MODULE_AUTHOR("Alexander Shishkin");
  26
  27 /* Cortex CoreSight components within omap3xxx EMU */
  28 #define ETM_BASE        (L4_EMU_34XX_PHYS + 0x10000)
  29 #define DBG_BASE        (L4_EMU_34XX_PHYS + 0x11000)
  30 #define ETB_BASE        (L4_EMU_34XX_PHYS + 0x1b000)
  31 #define DAPCTL          (L4_EMU_34XX_PHYS + 0x1d000)
  32
  33 static struct amba_device omap3_etb_device = {
  34         .dev            = {
  35                 .init_name = "etb",
  36         },
  37         .res            = {
  38                 .start  = ETB_BASE,
  39                 .end    = ETB_BASE + SZ_4K - 1,
  40                 .flags  = IORESOURCE_MEM,
  41         },
  42         .periphid       = 0x000bb907,
  43 };
  44
  45 static struct amba_device omap3_etm_device = {
  46         .dev            = {
  47                 .init_name = "etm",
  48         },
  49         .res            = {
  50                 .start  = ETM_BASE,
  51                 .end    = ETM_BASE + SZ_4K - 1,
  52                 .flags  = IORESOURCE_MEM,
  53         },
  54         .periphid       = 0x102bb921,
  55 };
  56
  57 static int __init emu_init(void)
  58 {
  59         if (!cpu_is_omap34xx())
  60                 return -ENODEV;
  61
  62         amba_device_register(&omap3_etb_device, &iomem_resource);
  63         amba_device_register(&omap3_etm_device, &iomem_resource);
  64
  65         return 0;
  66 }
  67
  68 subsys_initcall(emu_init);
  69