[PATCH] MIPS: Add platform specific secondary core init

[Tony Wu <tung7970@xxxxxxxxx>]

Define plat_smp_init_secondary() API, and move platform specific
secondary core initialization to each platform.

Signed-off-by: Tony Wu <tung7970@xxxxxxxxx>
Cc: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
---
 arch/mips/include/asm/smp-ops.h  |    1 +
 arch/mips/kernel/smp-cmp.c       |    8 ++------
 arch/mips/kernel/smp-cps.c       |    4 ++--
 arch/mips/kernel/smp-mt.c        |   12 ++----------
 arch/mips/mti-malta/malta-init.c |   13 +++++++++++++
 5 files changed, 20 insertions(+), 18 deletions(-)

diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h
index 6ba1fb8..53ce7e1 100644
--- a/arch/mips/include/asm/smp-ops.h
+++ b/arch/mips/include/asm/smp-ops.h
@@ -36,6 +36,7 @@ struct plat_smp_ops {
 };
 
 extern void register_smp_ops(struct plat_smp_ops *ops);
+extern void plat_smp_init_secondary(void)
 
 static inline void plat_smp_setup(void)
 {
diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c
index d5e0f94..e8c0258 100644
--- a/arch/mips/kernel/smp-cmp.c
+++ b/arch/mips/kernel/smp-cmp.c
@@ -43,17 +43,13 @@ static void cmp_init_secondary(void)
 {
 	struct cpuinfo_mips *c __maybe_unused = &current_cpu_data;
 
-	/* Assume GIC is present */
-	change_c0_status(ST0_IM, STATUSF_IP2 | STATUSF_IP3 | STATUSF_IP4 |
-				 STATUSF_IP5 | STATUSF_IP6 | STATUSF_IP7);
-
-	/* Enable per-cpu interrupts: platform specific */
-
 #ifdef CONFIG_MIPS_MT_SMP
 	if (cpu_has_mipsmt)
 		c->vpe_id = (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) &
 			TCBIND_CURVPE;
 #endif
+	/* Call platform specific init secondary */
+	plat_smp_init_secondary();
 }
 
 static void cmp_smp_finish(void)
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index 4251d39..5570bc8 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -279,8 +279,8 @@ static void cps_init_secondary(void)
 	if (cpu_has_mipsmt)
 		dmt();
 
-	change_c0_status(ST0_IM, STATUSF_IP2 | STATUSF_IP3 | STATUSF_IP4 |
-				 STATUSF_IP5 | STATUSF_IP6 | STATUSF_IP7);
+	/* Call platform specific init secondary */
+	plat_smp_init_secondary();
 }
 
 static void cps_smp_finish(void)
diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index 86311a1..3d1e32a 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -158,16 +158,8 @@ static void vsmp_send_ipi_mask(const struct cpumask *mask, unsigned int action)
 
 static void vsmp_init_secondary(void)
 {
-#ifdef CONFIG_MIPS_GIC
-	/* This is Malta specific: IPI,performance and timer interrupts */
-	if (gic_present)
-		change_c0_status(ST0_IM, STATUSF_IP2 | STATUSF_IP3 |
-					 STATUSF_IP4 | STATUSF_IP5 |
-					 STATUSF_IP6 | STATUSF_IP7);
-	else
-#endif
-		change_c0_status(ST0_IM, STATUSF_IP0 | STATUSF_IP1 |
-					 STATUSF_IP6 | STATUSF_IP7);
+	/* Call platform specific init secondary */
+	plat_smp_init_secondary();
 }
 
 static void vsmp_smp_finish(void)
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index cec3e18..3385ad9 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -116,6 +116,19 @@ phys_addr_t mips_cpc_default_phys_base(void)
 	return CPC_BASE_ADDR;
 }
 
+void plat_smp_init_secondary(void)
+{
+#ifdef CONFIG_MIPS_GIC
+	if (gic_present)
+		change_c0_status(ST0_IM, STATUSF_IP2 | STATUSF_IP3 |
+					 STATUSF_IP4 | STATUSF_IP5 |
+					 STATUSF_IP6 | STATUSF_IP7);
+	else
+#endif
+		change_c0_status(ST0_IM, STATUSF_IP0 | STATUSF_IP1 |
+					 STATUSF_IP6 | STATUSF_IP7);
+}
+
 void __init prom_init(void)
 {
 	mips_display_message("LINUX");
-- 
1.7.5