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ARC: Add support for generic HS48 processor 

For the HS48 processor, BR currently builds with -mcpu=hs4x_rel31 which
generates suboptimal code as it inhibits delay slot and back-back ST and so on.

Enable a new variant to build with -mcpu=hs4x for normal codegen.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
[yann.morin.1998@free.fr:
  - simplify dependencies on MMU page size
  - wrap long lines
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021.05.x
Vineet Gupta 2021-01-15 12:03:16 -08:00 committed by Yann E. MORIN
parent 30bd7262e5
commit aefe5934a4
1 changed files with 14 additions and 5 deletions
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19
arch/Config.in.arc
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@ -39,9 +39,14 @@ config BR2_archs38_full
config BR2_archs4x_rel31
bool "ARC HS48 rel 31"
help
Build for HS48 release 3.1
config BR2_archs4x
bool "ARC HS48"
help
Latest release of HS48 processor
- Dual- and quad multiply and MC oprations
- Dual and Quad multiply and MAC operations
- Double-precision FPU
endchoice
@ -49,7 +54,9 @@ 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_64mpy || BR2_archs38_full || BR2_archs4x_rel31
default y if BR2_arc770d
default y if BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full
default y if BR2_archs4x_rel31 || BR2_archs4x
config BR2_ARCH
default "arc" if BR2_arcle
@ -70,10 +77,12 @@ config BR2_GCC_TARGET_CPU
default "hs38" if BR2_archs38_64mpy
default "hs38_linux" if BR2_archs38_full
default "hs4x_rel31" if BR2_archs4x_rel31
default "hs4x" if BR2_archs4x
config BR2_READELF_ARCH_NAME
default "ARCompact" if BR2_arc750d || BR2_arc770d
default "ARCv2" if BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
default "ARCv2" if BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full
default "ARCv2" if BR2_archs4x_rel31 || BR2_archs4x
choice
prompt "MMU Page Size"
@ -93,7 +102,7 @@ choice
config BR2_ARC_PAGE_SIZE_4K
bool "4KB"
depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
depends on !BR2_arc750d
config BR2_ARC_PAGE_SIZE_8K
bool "8KB"
@ -103,7 +112,7 @@ config BR2_ARC_PAGE_SIZE_8K
config BR2_ARC_PAGE_SIZE_16K
bool "16KB"
depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
depends on !BR2_arc750d
endchoice