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
emu_init(void)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
70