MIPS: BMIPS: add a smp ops registration helper

Add a helper similar to the generic register_XXX_smp_ops() for bmips.
Register SMP UP ops in case of BMIPS32/3300.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6248/

3 files changed, 28 insertions, 1 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 7eaa4129dbcc..f2f6c1de2389 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1479,6 +1479,7 @@ config CPU_LOONGSON1
         select CPU_SUPPORTS_HIGHMEM
 
 config CPU_BMIPS32_3300
+        select SMP_UP if SMP
         bool
 
 config CPU_BMIPS4350
diff --git a/arch/mips/bcm63xx/prom.c b/arch/mips/bcm63xx/prom.c
index 9872ca34d0c4..f93f4fc00ca5 100644
--- a/arch/mips/bcm63xx/prom.c
+++ b/arch/mips/bcm63xx/prom.c
@@ -61,7 +61,7 @@ void __init prom_init(void)
 
         if (IS_ENABLED(CONFIG_CPU_BMIPS4350) && IS_ENABLED(CONFIG_SMP)) {
                 /* set up SMP */
-                register_smp_ops(&bmips43xx_smp_ops);
+                register_bmips_smp_ops();
 
                 /*
                  * BCM6328 might not have its second CPU enabled, while BCM3368
diff --git a/arch/mips/include/asm/bmips.h b/arch/mips/include/asm/bmips.h
index 880f6aadeaea..cbaccebf5065 100644
--- a/arch/mips/include/asm/bmips.h
+++ b/arch/mips/include/asm/bmips.h
@@ -46,9 +46,35 @@
 
 #include <linux/cpumask.h>
 #include <asm/r4kcache.h>
+#include <asm/smp-ops.h>
 
 extern struct plat_smp_ops bmips43xx_smp_ops;
 extern struct plat_smp_ops bmips5000_smp_ops;
+
+static inline int register_bmips_smp_ops(void)
+{
+#if IS_ENABLED(CONFIG_CPU_BMIPS) && IS_ENABLED(CONFIG_SMP)
+        switch (current_cpu_type()) {
+        case CPU_BMIPS32:
+        case CPU_BMIPS3300:
+                return register_up_smp_ops();
+        case CPU_BMIPS4350:
+        case CPU_BMIPS4380:
+                register_smp_ops(&bmips43xx_smp_ops);
+                break;
+        case CPU_BMIPS5000:
+                register_smp_ops(&bmips5000_smp_ops);
+                break;
+        default:
+                return -ENODEV;
+        }
+
+        return 0;
+#else
+        return -ENODEV;
+#endif
+}
+
 extern char bmips_reset_nmi_vec;
 extern char bmips_reset_nmi_vec_end;
 extern char bmips_smp_movevec;