MIPS: Loongson: Cleanup machtype support

To choose code for different machines by the value of machtype it needs to
be initialized as early as possible.  So move initialization of
mips_machtype to prom_init().

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 15 insertions, 8 deletions

diff --git a/arch/mips/loongson/common/machtype.c b/arch/mips/loongson/common/machtype.c
index 7b348248de7..7545fe69089 100644
--- a/arch/mips/loongson/common/machtype.c
+++ b/arch/mips/loongson/common/machtype.c
@@ -15,6 +15,9 @@
 #include <loongson.h>
 #include <machine.h>
 
+/* please ensure the length of the machtype string is less than 50 */
+#define MACHTYPE_LEN 50
+
 static const char *system_types[] = {
 	[MACH_LOONGSON_UNKNOWN]         "unknown loongson machine",
 	[MACH_LEMOTE_FL2E]              "lemote-fuloong-2e-box",
@@ -27,24 +30,28 @@ static const char *system_types[] = {
 
 const char *get_system_type(void)
 {
-	if (mips_machtype == MACH_UNKNOWN)
-		mips_machtype = LOONGSON_MACHTYPE;
-
 	return system_types[mips_machtype];
 }
 
-static __init int machtype_setup(char *str)
+void __init prom_init_machtype(void)
 {
+	char *p, str[MACHTYPE_LEN];
 	int machtype = MACH_LEMOTE_FL2E;
 
-	if (!str)
-		return -EINVAL;
+	mips_machtype = LOONGSON_MACHTYPE;
+
+	p = strstr(arcs_cmdline, "machtype=");
+	if (!p)
+		return;
+	p += strlen("machtype=");
+	strncpy(str, p, MACHTYPE_LEN);
+	p = strstr(str, " ");
+	if (p)
+		*p = '\0';
 
 	for (; system_types[machtype]; machtype++)
 		if (strstr(system_types[machtype], str)) {
 			mips_machtype = machtype;
 			break;
 		}
-	return 0;
 }
-__setup("machtype=", machtype_setup);