ARC: Add support for ARC HS48 v3.1 processor

This patch introduces a recently released significant update to ARC HS
family: ARC HS48.

One of the major ARC HS48 features is dual-issue pipeline which requires a
little bit modified instruction scheduling compared to single-issue cores
(HS38), thus new "-mcpu/--with-cpu=hs4x".

Also to address some peculiarities of early designs based on HS48 we
introduced yet another "-mcpu/--with-cpu=hs4x_rel31" which we're going to use
as well on some of our development boards.

Signed-off-by: Evgeniy Didin <didin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: arc-buildroot@synopsys.com
[Peter: fixup check-package warnings]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index f7818e7ebb87c02ae1d942f5d40861a05185ce28..c65bb01f1f4f9e914ab217ca3bfd38c71df741bc 100644 (file)
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -31,12 +31,19 @@ config BR2_archs38_full
          It corresponds to "hs38_slc_full" ARC HS template in
          ARChitect.
 
+config BR2_archs4x_rel31
+       bool "ARC HS48 rel 31"
+       help
+          Latest release of HS48 processor
+          - Dual- and quad multiply and MC oprations
+          - Double-precision FPU
+
 endchoice
 
 # Choice of atomic instructions presence
 config BR2_ARC_ATOMIC_EXT
        bool "Atomic extension (LLOCK/SCOND instructions)"
-       default y if BR2_arc770d || BR2_archs38 || BR2_archs38_full
+       default y if BR2_arc770d || BR2_archs38 || BR2_archs38_full || BR2_archs4x_rel31
 
 config BR2_ARCH
        default "arc"   if BR2_arcle
@@ -55,10 +62,11 @@ config BR2_GCC_TARGET_CPU
        default "arc700" if BR2_arc770d
        default "archs"  if BR2_archs38
        default "hs38_linux"     if BR2_archs38_full
+       default "hs4x_rel31"     if BR2_archs4x_rel31
 
 config BR2_READELF_ARCH_NAME
        default "ARCompact"     if BR2_arc750d || BR2_arc770d
-       default "ARCv2"         if BR2_archs38 || BR2_archs38_full
+       default "ARCv2"         if BR2_archs38 || BR2_archs38_full || BR2_archs4x_rel31
 
 choice
        prompt "MMU Page Size"
@@ -78,7 +86,7 @@ choice
 
 config BR2_ARC_PAGE_SIZE_4K
        bool "4KB"
-       depends on BR2_arc770d || BR2_archs38 || BR2_archs38_full
+       depends on BR2_arc770d || BR2_archs38 || BR2_archs38_full || BR2_archs4x_rel31
 
 config BR2_ARC_PAGE_SIZE_8K
        bool "8KB"
@@ -88,7 +96,7 @@ config BR2_ARC_PAGE_SIZE_8K
 
 config BR2_ARC_PAGE_SIZE_16K
        bool "16KB"
-       depends on BR2_arc770d || BR2_archs38 || BR2_archs38_full
+       depends on BR2_arc770d || BR2_archs38 || BR2_archs38_full || BR2_archs4x_rel31
 
 endchoice