ARC: [SMP] ISS SMP extension bitrot

* Move extension specific code out of common SMP code
* Don't enable it by default for SMP

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

5 files changed, 21 insertions, 23 deletions

diff --git a/arch/arc/include/asm/irq.h b/arch/arc/include/asm/irq.h
index 291a70db68b8..781f57f25bd8 100644
--- a/arch/arc/include/asm/irq.h
+++ b/arch/arc/include/asm/irq.h
@@ -19,8 +19,6 @@
 #include <asm-generic/irq.h>
 
 extern void arc_init_IRQ(void);
-extern int get_hw_config_num_irq(void);
-
 void arc_local_timer_setup(unsigned int cpu);
 
 #endif
diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c
index a4b141ee9a6a..7d653c0d0773 100644
--- a/arch/arc/kernel/irq.c
+++ b/arch/arc/kernel/irq.c
@@ -150,24 +150,6 @@ void arch_do_IRQ(unsigned int irq, struct pt_regs *regs)
         set_irq_regs(old_regs);
 }
 
-int get_hw_config_num_irq(void)
-{
-        uint32_t val = read_aux_reg(ARC_REG_VECBASE_BCR);
-
-        switch (val & 0x03) {
-        case 0:
-                return 16;
-        case 1:
-                return 32;
-        case 2:
-                return 8;
-        default:
-                return 0;
-        }
-
-        return 0;
-}
-
 /*
  * arch_local_irq_enable - Enable interrupts.
  *
diff --git a/arch/arc/plat-arcfpga/Makefile b/arch/arc/plat-arcfpga/Makefile
index a44e22ebc1b7..4d1bddc34b5b 100644
--- a/arch/arc/plat-arcfpga/Makefile
+++ b/arch/arc/plat-arcfpga/Makefile
@@ -9,4 +9,4 @@
 KBUILD_CFLAGS   += -Iarch/arc/plat-arcfpga/include
 
 obj-y := platform.o irq.o
-obj-$(CONFIG_SMP)               += smp.o
+obj-$(CONFIG_ISS_SMP_EXTN)              += smp.o
diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c
index 19b76b61f44b..213394a15cd2 100644
--- a/arch/arc/plat-arcfpga/platform.c
+++ b/arch/arc/plat-arcfpga/platform.c
@@ -169,7 +169,7 @@ static void __init plat_fpga_early_init(void)
 
         arc_fpga_serial_init();
 
-#ifdef CONFIG_SMP
+#ifdef CONFIG_ISS_SMP_EXTN
         iss_model_init_early_smp();
 #endif
 }
@@ -211,7 +211,7 @@ MACHINE_START(ANGEL4, "angel4")
         .init_early     = plat_fpga_early_init,
         .init_machine   = plat_fpga_populate_dev,
         .init_irq       = plat_fpga_init_IRQ,
-#ifdef CONFIG_SMP
+#ifdef CONFIG_ISS_SMP_EXTN
         .init_smp       = iss_model_init_smp,
 #endif
 MACHINE_END
diff --git a/arch/arc/plat-arcfpga/smp.c b/arch/arc/plat-arcfpga/smp.c
index 8a12741f5f7a..92bad9122077 100644
--- a/arch/arc/plat-arcfpga/smp.c
+++ b/arch/arc/plat-arcfpga/smp.c
@@ -42,6 +42,24 @@ static void iss_model_smp_wakeup_cpu(int cpu, unsigned long pc)
 
 }
 
+static inline int get_hw_config_num_irq(void)
+{
+        uint32_t val = read_aux_reg(ARC_REG_VECBASE_BCR);
+
+        switch (val & 0x03) {
+        case 0:
+                return 16;
+        case 1:
+                return 32;
+        case 2:
+                return 8;
+        default:
+                return 0;
+        }
+
+        return 0;
+}
+
 /*
  * Any SMP specific init any CPU does when it comes up.
  * Here we setup the CPU to enable Inter-Processor-Interrupts