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ARC: Add support for ARC HS48 v3.1 processor

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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>
This commit is contained in:
Evgeniy Didin 2019-06-04 08:39:27 +03:00 committed by Peter Korsgaard
parent 1ad5e0a6a6
commit 81fed0c7db
1 changed files with 12 additions and 4 deletions
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16
arch/Config.in.arc
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@ -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