summaryrefslogtreecommitdiff
path: root/target/linux/generic/patches-2.6.31/020-mips_multi_machine_support.patch
blob: 8f4cf575d0399db3295553b044fc1ee5ba88d40a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
--- /dev/null
+++ b/arch/mips/include/asm/mips_machine.h
@@ -0,0 +1,47 @@
+/*
+ *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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.
+ *
+ */
+
+#ifndef __ASM_MIPS_MACHINE_H
+#define __ASM_MIPS_MACHINE_H
+
+#include <linux/init.h>
+#include <linux/list.h>
+
+struct mips_machine {
+	unsigned long		mach_type;
+	void			(*mach_setup)(void);
+	char			*mach_name;
+	struct list_head	list;
+};
+
+void mips_machine_register(struct mips_machine *) __init;
+void mips_machine_setup(unsigned long machtype) __init;
+void mips_machine_set_name(char *name) __init;
+
+extern char *mips_machine_name;
+
+#define MIPS_MACHINE(_type, _name, _setup) 			\
+static char machine_name_##_type[] __initdata = _name;		\
+static struct mips_machine machine_##_type __initdata =		\
+{								\
+	.mach_type	= _type,				\
+	.mach_name	= machine_name_##_type,			\
+	.mach_setup	= _setup,				\
+};								\
+								\
+static int __init register_machine_##_type(void)		\
+{								\
+	mips_machine_register(&machine_##_type);		\
+	return 0;						\
+}								\
+								\
+pure_initcall(register_machine_##_type)
+
+#endif /* __ASM_MIPS_MACHINE_H */
+
--- /dev/null
+++ b/arch/mips/kernel/mips_machine.c
@@ -0,0 +1,74 @@
+/*
+ *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  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/mm.h>
+
+#include <asm/mips_machine.h>
+#include <asm/bootinfo.h>
+
+static struct list_head mips_machines __initdata =
+		LIST_HEAD_INIT(mips_machines);
+
+char *mips_machine_name = "Unknown";
+
+static struct mips_machine * __init mips_machine_find(unsigned long machtype)
+{
+	struct list_head *this;
+
+	list_for_each(this, &mips_machines) {
+		struct mips_machine *mach;
+
+		mach = list_entry(this, struct mips_machine, list);
+		if (mach->mach_type == machtype)
+			return mach;
+	}
+
+	return NULL;
+}
+
+void __init mips_machine_register(struct mips_machine *mach)
+{
+	list_add_tail(&mach->list, &mips_machines);
+}
+
+void __init mips_machine_set_name(char *name)
+{
+	unsigned int len;
+	char *p;
+
+	if (name == NULL)
+		return;
+
+	len = strlen(name);
+	p = kmalloc(len + 1, GFP_KERNEL);
+	if (p) {
+		strncpy(p, name, len);
+		p[len] = '\0';
+		mips_machine_name = p;
+	} else {
+		printk(KERN_WARNING "MIPS: no memory for machine_name\n");
+	}
+}
+
+void __init mips_machine_setup(unsigned long machtype)
+{
+	struct mips_machine *mach;
+
+	mach = mips_machine_find(machtype);
+	if (!mach) {
+		printk(KERN_ALERT "MIPS: no machine registered for "
+			"machtype %lu\n", machtype);
+		return;
+	}
+
+	mips_machine_set_name(mach->mach_name);
+	printk(KERN_INFO "MIPS: machine is %s\n", mips_machine_name);
+
+	if (mach->mach_setup)
+		mach->mach_setup();
+}
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -87,6 +87,7 @@ obj-$(CONFIG_GPIO_TXX9)		+= gpio_txx9.o
 
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
+obj-$(CONFIG_MIPS_MACHINE)	+= mips_machine.o
 
 CFLAGS_cpu-bugs64.o	= $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
 
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -837,6 +837,9 @@ config MIPS_DISABLE_OBSOLETE_IDE
 config SYNC_R4K
 	bool
 
+config MIPS_MACHINE
+	def_bool n
+
 config NO_IOPORT
 	def_bool n
 
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -12,6 +12,7 @@
 #include <asm/cpu-features.h>
 #include <asm/mipsregs.h>
 #include <asm/processor.h>
+#include <asm/mips_machine.h>
 
 unsigned int vced_count, vcei_count;
 
@@ -31,8 +32,12 @@ static int show_cpuinfo(struct seq_file
 	/*
 	 * For the first processor also print the system type
 	 */
-	if (n == 0)
+	if (n == 0) {
 		seq_printf(m, "system type\t\t: %s\n", get_system_type());
+#ifdef CONFIG_MIPS_MACHINE
+		seq_printf(m, "machine\t\t\t: %s\n", mips_machine_name);
+#endif
+	}
 
 	seq_printf(m, "processor\t\t: %ld\n", n);
 	sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",