ARC: Allow SMP kernel to build/boot on UP-only infrastructure

In light of recent SNAFU with SMP build, allow simple platform to build
as SMP but run UP.

* Remove the dependence on simulation SMP extension to enable quick
  build/test iterations of SMP kernel.

* In absence of platform SMP registration, prevent the NULL smp feature
  name from borkign the system

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

2 files changed, 2 insertions, 2 deletions

diff --git a/arch/arc/plat-arcfpga/Kconfig b/arch/arc/plat-arcfpga/Kconfig
index b9f34cf55acf..4965f9f4ffdc 100644
--- a/arch/arc/plat-arcfpga/Kconfig
+++ b/arch/arc/plat-arcfpga/Kconfig
@@ -8,7 +8,7 @@
 
 menuconfig ARC_PLAT_FPGA_LEGACY
         bool "\"Legacy\" ARC FPGA dev Boards"
-        select ISS_SMP_EXTN if SMP
+        select ARC_HAS_COH_CACHES if SMP
         help
           Support for ARC development boards, provided by Synopsys.
           These are based on FPGA or ISS. e.g.
diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c
index 1038949a99a1..6abc341e276d 100644
--- a/arch/arc/plat-arcfpga/platform.c
+++ b/arch/arc/plat-arcfpga/platform.c
@@ -71,7 +71,7 @@ MACHINE_START(ML509, "ml509")
         .dt_compat      = ml509_compat,
         .init_early     = plat_fpga_early_init,
         .init_machine   = plat_fpga_populate_dev,
-#ifdef CONFIG_SMP
+#ifdef CONFIG_ISS_SMP_EXTN
         .init_smp       = iss_model_init_smp,
 #endif
 MACHINE_END