MIPS: move mips_{set,get}_machine_name() to a more generic place

Previously this functionality was only available to users of the mips_machine
api. Moving the code to prom.c allows us to also add a OF wrapper.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5164/

4 files changed, 36 insertions, 25 deletions

diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index de75fb50562b..cdb87b2a423d 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -5,7 +5,7 @@
 extra-y         := head.o vmlinux.lds
 
 obj-y           += cpu-probe.o branch.o entry.o genex.o irq.o process.o \
-                   ptrace.o reset.o setup.o signal.o syscall.o \
+                   prom.o ptrace.o reset.o setup.o signal.o syscall.o \
                    time.o topology.o traps.o unaligned.o watch.o vdso.o
 
 ifdef CONFIG_FUNCTION_TRACER
@@ -86,8 +86,6 @@ obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 obj-$(CONFIG_SPINLOCK_TEST)     += spinlock_test.o
 obj-$(CONFIG_MIPS_MACHINE)      += mips_machine.o
 
-obj-$(CONFIG_OF)                += prom.o
-
 CFLAGS_cpu-bugs64.o     = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -x c /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
 
 obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT)   += 8250-platform.o
diff --git a/arch/mips/kernel/mips_machine.c b/arch/mips/kernel/mips_machine.c
index 411a058d2c53..876097529697 100644
--- a/arch/mips/kernel/mips_machine.c
+++ b/arch/mips/kernel/mips_machine.c
@@ -11,9 +11,9 @@
 #include <linux/slab.h>
 
 #include <asm/mips_machine.h>
+#include <asm/prom.h>
 
 static struct mips_machine *mips_machine __initdata;
-static char *mips_machine_name = "Unknown";
 
 #define for_each_machine(mach) \
         for ((mach) = (struct mips_machine *)&__mips_machines_start; \
@@ -21,25 +21,6 @@ static char *mips_machine_name = "Unknown";
              (unsigned long)(mach) < (unsigned long)&__mips_machines_end; \
              (mach)++)
 
-__init void mips_set_machine_name(const char *name)
-{
-        char *p;
-
-        if (name == NULL)
-                return;
-
-        p = kstrdup(name, GFP_KERNEL);
-        if (!p)
-                pr_err("MIPS: no memory for machine_name\n");
-
-        mips_machine_name = p;
-}
-
-char *mips_get_machine_name(void)
-{
-        return mips_machine_name;
-}
-
 __init int mips_machtype_setup(char *id)
 {
         struct mips_machine *mach;
@@ -79,7 +60,6 @@ __init void mips_machine_setup(void)
                 return;
 
         mips_set_machine_name(mips_machine->mach_name);
-        pr_info("MIPS: machine is %s\n", mips_machine_name);
 
         if (mips_machine->mach_setup)
                 mips_machine->mach_setup();
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index 7a54f74b7818..1dd137bab5c5 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -12,7 +12,7 @@
 #include <asm/cpu-features.h>
 #include <asm/mipsregs.h>
 #include <asm/processor.h>
-#include <asm/mips_machine.h>
+#include <asm/prom.h>
 
 unsigned int vced_count, vcei_count;
 
diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c
index 028f6f837ef9..5712bb532245 100644
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -23,6 +23,23 @@
 #include <asm/page.h>
 #include <asm/prom.h>
 
+static char mips_machine_name[64] = "Unknown";
+
+__init void mips_set_machine_name(const char *name)
+{
+        if (name == NULL)
+                return;
+
+        strncpy(mips_machine_name, name, sizeof(mips_machine_name));
+        pr_info("MIPS: machine is %s\n", mips_get_machine_name());
+}
+
+char *mips_get_machine_name(void)
+{
+        return mips_machine_name;
+}
+
+#ifdef CONFIG_OF
 int __init early_init_dt_scan_memory_arch(unsigned long node,
                                           const char *uname, int depth,
                                           void *data)
@@ -50,6 +67,18 @@ void __init early_init_dt_setup_initrd_arch(unsigned long start,
 }
 #endif
 
+int __init early_init_dt_scan_model(unsigned long node, const char *uname,
+                                    int depth, void *data)
+{
+        if (!depth) {
+                char *model = of_get_flat_dt_prop(node, "model", NULL);
+
+                if (model)
+                        mips_set_machine_name(model);
+        }
+        return 0;
+}
+
 void __init early_init_devtree(void *params)
 {
         /* Setup flat device-tree pointer */
@@ -65,6 +94,9 @@ void __init early_init_devtree(void *params)
         /* Scan memory nodes */
         of_scan_flat_dt(early_init_dt_scan_root, NULL);
         of_scan_flat_dt(early_init_dt_scan_memory_arch, NULL);
+
+        /* try to load the mips machine name */
+        of_scan_flat_dt(early_init_dt_scan_model, NULL);
 }
 
 void __init __dt_setup_arch(struct boot_param_header *bph)
@@ -79,3 +111,4 @@ void __init __dt_setup_arch(struct boot_param_header *bph)
 
         early_init_devtree(initial_boot_params);
 }
+#endif