Linux Kernel  3.7.1
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emu.c
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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 subsys_initcall(emu_init);