goldfish: platform device for x86

Based on code by Jun Nakajima but stripped of all the old x86 mach-foo
stuff and turned into a single file for the Goldfish virtual bus layer.

The actual created platform device and bus enumeration is portable between the
ARM and x86 Goldfish emulations.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Link: http://lkml.kernel.org/r/20130121172205.19517.22535.stgit@bob.linux.org.uk
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Xiaohui Xin <xiaohui.xin@intel.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
[Ported to 3.7 and reorganised so that we can keep most of the code
 shared properly]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>

2 files changed, 52 insertions, 0 deletions

diff --git a/arch/x86/platform/goldfish/Makefile b/arch/x86/platform/goldfish/Makefile
new file mode 100644
index 000000000000..f030b532fdf3
--- /dev/null
+++ b/arch/x86/platform/goldfish/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_GOLDFISH)  += goldfish.o
diff --git a/arch/x86/platform/goldfish/goldfish.c b/arch/x86/platform/goldfish/goldfish.c
new file mode 100644
index 000000000000..1693107a518e
--- /dev/null
+++ b/arch/x86/platform/goldfish/goldfish.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (C) 2011 Intel, Inc.
+ * Copyright (C) 2013 Intel, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+
+/*
+ * Where in virtual device memory the IO devices (timers, system controllers
+ * and so on)
+ */
+
+#define GOLDFISH_PDEV_BUS_BASE  (0xff001000)
+#define GOLDFISH_PDEV_BUS_END   (0xff7fffff)
+#define GOLDFISH_PDEV_BUS_IRQ   (4)
+
+#define GOLDFISH_TTY_BASE       (0x2000)
+
+static struct resource goldfish_pdev_bus_resources[] = {
+        {
+                .start  = GOLDFISH_PDEV_BUS_BASE,
+                .end    = GOLDFISH_PDEV_BUS_END,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = GOLDFISH_PDEV_BUS_IRQ,
+                .end    = GOLDFISH_PDEV_BUS_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        }
+};
+
+static int __init goldfish_init(void)
+{
+        platform_device_register_simple("goldfish_pdev_bus", -1,
+                                                goldfish_pdev_bus_resources, 2);
+        return 0;
+}
+device_initcall(goldfish_init);