[PATCH v4 1/5] MIPS: Lonngson64: Copy kernel command line from arcs_cmdline

[Jiaxun Yang <jiaxun.yang@flygoat.com>]

Since lemote-2f/marchtype.c need to get cmdline from loongson.h
this patch simply copy kernel command line from arcs_cmdline
to fix that issue

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/include/asm/mach-loongson64/loongson.h | 6 ++++++
 arch/mips/loongson64/common/cmdline.c            | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/arch/mips/include/asm/mach-loongson64/loongson.h 
b/arch/mips/include/asm/mach-loongson64/loongson.h
index c68c0cc879c6..1edf3a484e6a 100644
--- a/arch/mips/include/asm/mach-loongson64/loongson.h
+++ b/arch/mips/include/asm/mach-loongson64/loongson.h
@@ -45,6 +45,12 @@ static inline void prom_init_uart_base(void)
 #endif
 }
 
+/*
+ * Copy kernel command line from arcs_cmdline
+ */
+#include <asm/setup.h>
+extern char loongson_cmdline[COMMAND_LINE_SIZE];
+
 /* irq operation functions */
 extern void bonito_irqdispatch(void);
 extern void __init bonito_irq_init(void);
diff --git a/arch/mips/loongson64/common/cmdline.c 
b/arch/mips/loongson64/common/cmdline.c
index 01fbed137028..49e172184e15 100644
--- a/arch/mips/loongson64/common/cmdline.c
+++ b/arch/mips/loongson64/common/cmdline.c
@@ -21,6 +21,11 @@
 
 #include <loongson.h>
 
+/* the kernel command line copied from arcs_cmdline */
+#include <linux/export.h>
+char loongson_cmdline[COMMAND_LINE_SIZE];
+EXPORT_SYMBOL(loongson_cmdline);
+
 void __init prom_init_cmdline(void)
 {
        int prom_argc;
@@ -45,4 +50,6 @@ void __init prom_init_cmdline(void)
        }
 
        prom_init_machtype();
+       /* copy arcs_cmdline into loongson_cmdline */
+       strncpy(loongson_cmdline, arcs_cmdline, COMMAND_LINE_SIZE);
 }
-- 
2.15.0