x86: Add CE4100 platform support

Add CE4100 platform support. CE4100 needs early setup like
moorestown.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
LKML-Reference: <94720fd7f5564a12ebf202cf2c4f4c0d619aab35.1289331834.git.dirk.brandewie@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Documentation/x86/boot.txt

@@ -600,6 +600,7 @@ Protocol:	2.07+
   0x00000001	lguest
   0x00000002	Xen
   0x00000003	Moorestown MID
+  0x00000004	CE4100 TV Platform
 
 Field name:	hardware_subarch_data
 Type:		write (subarch-dependent)

arch/x86/Kconfig

@@ -377,6 +377,17 @@ config X86_ELAN
 
 	  If unsure, choose "PC-compatible" instead.
 
+config X86_INTEL_CE
+	bool "CE4100 TV platform"
+	depends on PCI
+	depends on PCI_GODIRECT
+	depends on X86_32
+	depends on X86_EXTENDED_PLATFORM
+	---help---
+	  Select for the Intel CE media processor (CE4100) SOC.
+	  This option compiles in support for the CE4100 SOC for settop
+	  boxes and media devices.
+
 config X86_MRST
        bool "Moorestown MID platform"
 	depends on PCI

arch/x86/include/asm/bootparam.h

@@ -124,6 +124,7 @@ enum {
 	X86_SUBARCH_LGUEST,
 	X86_SUBARCH_XEN,
 	X86_SUBARCH_MRST,
+	X86_SUBARCH_CE4100,
 	X86_NR_SUBARCHS,
 };
 

arch/x86/include/asm/setup.h

@@ -53,6 +53,12 @@ extern void x86_mrst_early_setup(void);
 static inline void x86_mrst_early_setup(void) { }
 #endif
 
+#ifdef CONFIG_X86_INTEL_CE
+extern void x86_ce4100_early_setup(void);
+#else
+static inline void x86_ce4100_early_setup(void) { }
+#endif
+
 #ifndef _SETUP
 
 /*

arch/x86/kernel/head32.c

@@ -61,6 +61,9 @@ void __init i386_start_kernel(void)
 	case X86_SUBARCH_MRST:
 		x86_mrst_early_setup();
 		break;
+	case X86_SUBARCH_CE4100:
+		x86_ce4100_early_setup();
+		break;
 	default:
 		i386_default_early_setup();
 		break;

arch/x86/platform/Makefile

@@ -1,4 +1,5 @@
 # Platform specific code goes here
+obj-y	+= ce4100/
 obj-y	+= efi/
 obj-y	+= mrst/
 obj-y	+= olpc/

arch/x86/platform/ce4100/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_X86_INTEL_CE)	+= ce4100.o

arch/x86/platform/ce4100/ce4100.c

@@ -0,0 +1,42 @@
+/*
+ * Intel CE4100  platform specific setup code
+ *
+ * (C) Copyright 2010 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+
+#include <asm/setup.h>
+
+static int ce4100_i8042_detect(void)
+{
+	return 0;
+}
+
+static void __init sdv_arch_setup(void)
+{
+}
+
+static void __init sdv_find_smp_config(void)
+{
+}
+
+/*
+ * CE4100 specific x86_init function overrides and early setup
+ * calls.
+ */
+void __init x86_ce4100_early_setup(void)
+{
+	x86_init.oem.arch_setup = sdv_arch_setup;
+	x86_platform.i8042_detect = ce4100_i8042_detect;
+	x86_init.resources.probe_roms = x86_init_noop;
+	x86_init.mpparse.get_smp_config = x86_init_uint_noop;
+	x86_init.mpparse.find_smp_config = sdv_find_smp_config;
+}