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Message-ID: <20130117175338.24458.1896.stgit@bob.linux.org.uk>
Date: Thu, 17 Jan 2013 17:53:55 +0000
From: Alan Cox <alan@...ux.intel.com>
To: arve@...roid.com, x86@...nel.org, linux-kernel@...r.kernel.org,
mikechan@...gle.com
Subject: [PATCH 01/10] goldfish: platform device for x86
From: Jun Nakajima <jnakajim@...il.com>
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@...ux.intel.com>
Signed-off-by: Yunhong Jiang <yunhong.jiang@...el.com>
Signed-off-by: Xiaohui Xin <xiaohui.xin@...el.com>
Signed-off-by: Jun Nakajima <jun.nakajima@...el.com>
Signed-off-by: Bruce Beare <bruce.j.beare@...el.com>
[Ported to 3.7 and reorganised so that we can keep most of the code
shared properly]
Signed-off-by: Alan Cox <alan@...ux.intel.com>
---
arch/x86/Kconfig | 12 ++++++++
arch/x86/platform/Makefile | 1 +
arch/x86/platform/goldfish/Makefile | 1 +
arch/x86/platform/goldfish/goldfish.c | 51 +++++++++++++++++++++++++++++++++
4 files changed, 65 insertions(+)
create mode 100644 arch/x86/platform/goldfish/Makefile
create mode 100644 arch/x86/platform/goldfish/goldfish.c
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8c185d0..86859ec 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -322,6 +322,10 @@ config X86_BIGSMP
---help---
This option is needed for the systems that have more than 8 CPUs
+config GOLDFISH
+ def_bool y
+ depends on X86_GOLDFISH
+
if X86_32
config X86_EXTENDED_PLATFORM
bool "Support for extended (non-PC) x86 platforms"
@@ -404,6 +408,14 @@ config X86_UV
# Following is an alphabetically sorted list of 32 bit extended platforms
# Please maintain the alphabetic order if and when there are additions
+config X86_GOLDFISH
+ bool "Goldfish (Virtual Platform)"
+ depends on X86_32
+ ---help---
+ Enable support for the Goldfish virtual platform used primarily
+ for Android development. Unless you are building for the Android
+ Goldfish emulator say N here.
+
config X86_INTEL_CE
bool "CE4100 TV platform"
depends on PCI
diff --git a/arch/x86/platform/Makefile b/arch/x86/platform/Makefile
index 8d87439..bfe917f 100644
--- a/arch/x86/platform/Makefile
+++ b/arch/x86/platform/Makefile
@@ -2,6 +2,7 @@
obj-y += ce4100/
obj-y += efi/
obj-y += geode/
+obj-y += goldfish/
obj-y += iris/
obj-y += mrst/
obj-y += olpc/
diff --git a/arch/x86/platform/goldfish/Makefile b/arch/x86/platform/goldfish/Makefile
new file mode 100644
index 0000000..f030b53
--- /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 0000000..9eb156a
--- /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 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);
--
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