6 files changed, 53 insertions, 4 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4c12a290bee..f45d0d8e71d 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1286,6 +1286,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         (machvec) in a generic kernel.
                         Example: machvec=hpzx1_swiotlb
 
+        machtype=       [Loongson] Share the same kernel image file between different
+                         yeeloong laptop.
+                        Example: machtype=lemote-yeeloong-2f-7inch
+
         max_addr=nn[KMG]        [KNL,BOOT,ia64] All physical memory greater
                         than or equal to this physical address is ignored.
 
diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h
index 610fe3af7a0..f5dfaf6a160 100644
--- a/arch/mips/include/asm/bootinfo.h
+++ b/arch/mips/include/asm/bootinfo.h
@@ -7,6 +7,7 @@
  * Copyright (C) 1995, 1996 Andreas Busse
  * Copyright (C) 1995, 1996 Stoned Elipot
  * Copyright (C) 1995, 1996 Paul M. Antoine.
+ * Copyright (C) 2009       Zhang Le
  */
 #ifndef _ASM_BOOTINFO_H
 #define _ASM_BOOTINFO_H
@@ -57,6 +58,17 @@
 #define MACH_MIKROTIK_RB532     0       /* Mikrotik RouterBoard 532     */
 #define MACH_MIKROTIK_RB532A    1       /* Mikrotik RouterBoard 532A    */
 
+/*
+ * Valid machtype for Loongson family
+ */
+#define MACH_LOONGSON_UNKNOWN  0
+#define MACH_LEMOTE_FL2E       1
+#define MACH_LEMOTE_FL2F       2
+#define MACH_LEMOTE_ML2F7      3
+#define MACH_LEMOTE_YL2F89     4
+#define MACH_DEXXON_GDIUM2F10  5
+#define MACH_LOONGSON_END      6
+
 #define CL_SIZE                 COMMAND_LINE_SIZE
 
 extern char *system_type;
diff --git a/arch/mips/include/asm/mach-loongson/machine.h b/arch/mips/include/asm/mach-loongson/machine.h
index 8e60d363594..206ea206791 100644
--- a/arch/mips/include/asm/mach-loongson/machine.h
+++ b/arch/mips/include/asm/mach-loongson/machine.h
@@ -15,7 +15,7 @@
 
 #define LOONGSON_UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
 
-#define LOONGSON_MACHNAME "lemote-fuloong-2e-box"
+#define LOONGSON_MACHTYPE MACH_LEMOTE_FL2E
 
 #endif
 
diff --git a/arch/mips/loongson/common/Makefile b/arch/mips/loongson/common/Makefile
index 4e3889dec39..656b3cc0a2a 100644
--- a/arch/mips/loongson/common/Makefile
+++ b/arch/mips/loongson/common/Makefile
@@ -3,7 +3,7 @@
 #
 
 obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
-    pci.o bonito-irq.o mem.o
+    pci.o bonito-irq.o mem.o machtype.o
 
 #
 # Early printk support
diff --git a/arch/mips/loongson/common/machtype.c b/arch/mips/loongson/common/machtype.c
index 845b3fb47e0..7b348248de7 100644
--- a/arch/mips/loongson/common/machtype.c
+++ b/arch/mips/loongson/common/machtype.c
@@ -2,16 +2,49 @@
  * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  * Author: Wu Zhangjin, wuzj@lemote.com
  *
+ * Copyright (c) 2009 Zhang Le <r0bertz@gentoo.org>
+ *
  * 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;  either version 2 of the  License, or (at your
  * option) any later version.
  */
+#include <linux/errno.h>
+#include <asm/bootinfo.h>
 
+#include <loongson.h>
 #include <machine.h>
 
+static const char *system_types[] = {
+        [MACH_LOONGSON_UNKNOWN]         "unknown loongson machine",
+        [MACH_LEMOTE_FL2E]              "lemote-fuloong-2e-box",
+        [MACH_LEMOTE_FL2F]              "lemote-fuloong-2f-box",
+        [MACH_LEMOTE_ML2F7]             "lemote-mengloong-2f-7inches",
+        [MACH_LEMOTE_YL2F89]            "lemote-yeeloong-2f-8.9inches",
+        [MACH_DEXXON_GDIUM2F10]         "dexxon-gidum-2f-10inches",
+        [MACH_LOONGSON_END]             NULL,
+};
+
 const char *get_system_type(void)
 {
-        return LOONGSON_MACHNAME;
+        if (mips_machtype == MACH_UNKNOWN)
+                mips_machtype = LOONGSON_MACHTYPE;
+
+        return system_types[mips_machtype];
 }
 
+static __init int machtype_setup(char *str)
+{
+        int machtype = MACH_LEMOTE_FL2E;
+
+        if (!str)
+                return -EINVAL;
+
+        for (; system_types[machtype]; machtype++)
+                if (strstr(system_types[machtype], str)) {
+                        mips_machtype = machtype;
+                        break;
+                }
+        return 0;
+}
+__setup("machtype=", machtype_setup);
diff --git a/arch/mips/loongson/fuloong-2e/Makefile b/arch/mips/loongson/fuloong-2e/Makefile
index 96e45c13c85..3aba5fcc09d 100644
--- a/arch/mips/loongson/fuloong-2e/Makefile
+++ b/arch/mips/loongson/fuloong-2e/Makefile
@@ -2,6 +2,6 @@
 # Makefile for Lemote Fuloong2e mini-PC board.
 #
 
-obj-y += irq.o reset.o machtype.o
+obj-y += irq.o reset.o
 
 EXTRA_CFLAGS += -Werror