ARM: 5843/1: OMAP3: add AMBA devices for ETM and ETB

This enables on-chip tracing components found in omap3xxx.

Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 66 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/emu.c b/arch/arm/mach-omap2/emu.c
new file mode 100644
index 000000000000..ec0d984a26fc
--- /dev/null
+++ b/arch/arm/mach-omap2/emu.c
@@ -0,0 +1,66 @@
+/*
+ * 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)
+{
+        amba_device_register(&omap3_etb_device, &iomem_resource);
+        amba_device_register(&omap3_etm_device, &iomem_resource);
+
+        return 0;
+}
+
+subsys_initcall(emu_init);
+