[Buildroot] [PATCH] ARC: Add support for ARC HS48 v3.1 processor
Evgeniy Didin
Evgeniy.Didin at synopsys.com
Tue Jun 4 05:39:27 UTC 2019
This patch introduces 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_rel1" which
we're going to use as well on some of our development boards.
Note, there is a prerequisite patch:
https://patchwork.ozlabs.org/patch/995220/
Signed-off-by: Evgeniy Didin <didin at synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Cc: arc-buildroot at synopsys.com
---
arch/Config.in.arc | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index 69bb1504a9..8e9cd96dd2 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -30,12 +30,21 @@ 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
@@ -54,10 +63,11 @@ 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"
@@ -77,7 +87,7 @@ 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"
@@ -87,7 +97,7 @@ 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
--
2.16.2
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