diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c
index 079e33d52783..fb284c3b2cff 100644
--- a/arch/mips/bcm47xx/prom.c
+++ b/arch/mips/bcm47xx/prom.c
@@ -100,7 +100,7 @@ static __init void prom_init_console(void)
 
 static __init void prom_init_cmdline(void)
 {
-	char buf[CL_SIZE];
+	static char buf[CL_SIZE] __initdata;
 
 	/* Get the kernel command line from CFE */
 	if (cfe_getenv("LINUX_CMDLINE", buf, CL_SIZE) >= 0) {
diff --git a/arch/mips/mti-malta/malta-memory.c b/arch/mips/mti-malta/malta-memory.c
index 61888ff72c87..9035c64bc5ed 100644
--- a/arch/mips/mti-malta/malta-memory.c
+++ b/arch/mips/mti-malta/malta-memory.c
@@ -54,7 +54,8 @@ static struct prom_pmemblock * __init prom_getmdesc(void)
 {
 	char *memsize_str;
 	unsigned int memsize;
-	char cmdline[CL_SIZE], *ptr;
+	char *ptr;
+	static char cmdline[CL_SIZE] __initdata;
 
 	/* otherwise look in the environment */
 	memsize_str = prom_getenv("memsize");
diff --git a/arch/mips/rb532/prom.c b/arch/mips/rb532/prom.c
index 46ca24dbcc2d..ad5bd1097974 100644
--- a/arch/mips/rb532/prom.c
+++ b/arch/mips/rb532/prom.c
@@ -69,7 +69,7 @@ static inline unsigned long tag2ul(char *arg, const char *tag)
 
 void __init prom_setup_cmdline(void)
 {
-	char cmd_line[CL_SIZE];
+	static char cmd_line[CL_SIZE] __initdata;
 	char *cp, *board;
 	int prom_argc;
 	char **prom_argv, **prom_envp;
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index e10184c1b3e1..d66802edebb2 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -160,7 +160,7 @@ static void __init prom_init_cmdline(void)
 	int argc;
 	int *argv32;
 	int i;			/* Always ignore the "-c" at argv[0] */
-	char builtin[CL_SIZE];
+	static char builtin[CL_SIZE] __initdata;
 
 	if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
 		/*
@@ -315,7 +315,7 @@ static inline void txx9_cache_fixup(void)
 
 static void __init preprocess_cmdline(void)
 {
-	char cmdline[CL_SIZE];
+	static char cmdline[CL_SIZE] __initdata;
 	char *s;
 
 	strcpy(cmdline, arcs_cmdline);