arc: add explicit selection of CPU templates ARC 750D and ARC770D

This separation allows to specify unique options and features for each
CPU.

For example ARC 770D has LLOCK/SCOND instructions built-in by default.
Also this new scheme simplifies selection of proper configuration for
users - preconfigured options now match templates for ARC CPUs.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <akolesov@synopsys.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index fcb5d7d283f56f7166beb37a7a199ed2eca08621..b31b141e0f2437ebfa5de125ea26edf97df127b8 100644 (file)
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -1,6 +1,22 @@
-# Choise of atomic instructions presence
+choice
+       prompt "Target CPU"
+       depends on BR2_arc
+       default BR2_arc770d
+       help
+           Specific CPU to use
+
+config BR2_arc750d
+       bool "ARC 750D"
+
+config BR2_arc770d
+       bool "ARC 770D"
+
+endchoice
+
+# Choice of atomic instructions presence
 config BR2_ARC_ATOMIC_EXT
        bool "Atomic extension (LLOCK/SCOND instructions)"
+       default y if BR2_arc770d
 
 config BR2_ARCH_HAS_ATOMICS
        default y if BR2_ARC_ATOMIC_EXT
@@ -18,4 +34,5 @@ config BR2_ENDIAN
        default "BIG"    if BR2_arceb
 
 config BR2_GCC_TARGET_CPU
-       default "arc700"
+       default "arc700" if BR2_arc750d
+       default "arc700" if BR2_arc770d