kumquat-buildroot/arch/Config.in.arc
Vineet Gupta 4f115b521a arch/Config.in.arc: introduce the ARC optimized hs38 variant
This corresponds to -mcu=hs38 with mpy-option=9 (64-bit multiplier)

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-11-12 21:51:13 +01:00

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choice
prompt "Target CPU"
default BR2_arc770d
depends on BR2_arc
help
Specific CPU to use
config BR2_arc750d
bool "ARC 750D"
config BR2_arc770d
bool "ARC 770D"
config BR2_archs38
bool "ARC HS38"
help
Generic ARC HS capable of running Linux, i.e. with MMU,
caches and 32-bit multiplier. Also it corresponds to the
default configuration in older GNU toolchain versions.
config BR2_archs38_64mpy
bool "ARC HS38 with 64-bit mpy"
help
Fully featured ARC HS capable of running Linux, i.e. with
MMU, caches and 64-bit multiplier.
If you're not sure which version of ARC HS core you build
for use this one.
config BR2_archs38_full
bool "ARC HS38 with Quad MAC & FPU"
help
Fully featured ARC HS with additional support for
- Dual- and quad multiply and MC oprations
- Double-precision FPU
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_64mpy || BR2_archs38_full || BR2_archs4x_rel31
config BR2_ARCH
default "arc" if BR2_arcle
default "arceb" if BR2_arceb
config BR2_arc
bool
default y if BR2_arcle || BR2_arceb
config BR2_ENDIAN
default "LITTLE" if BR2_arcle
default "BIG" if BR2_arceb
config BR2_GCC_TARGET_CPU
default "arc700" if BR2_arc750d
default "arc700" if BR2_arc770d
default "archs" if BR2_archs38
default "hs38" if BR2_archs38_64mpy
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_64mpy || BR2_archs38_full || BR2_archs4x_rel31
choice
prompt "MMU Page Size"
default BR2_ARC_PAGE_SIZE_8K
help
MMU starting from version 3 (found in ARC 770) and now
version 4 (found in ARC HS38) allows the selection of the
page size during ASIC design creation.
The following options are available for MMU v3 and v4: 4kB,
8kB and 16 kB.
The default is 8 kB (that really matches the only page size
in MMU v2). It is important to build a toolchain with page
size matching the hardware configuration. Otherwise
user-space applications will fail at runtime.
config BR2_ARC_PAGE_SIZE_4K
bool "4KB"
depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
config BR2_ARC_PAGE_SIZE_8K
bool "8KB"
help
This is the one and only option available for MMUv2 and
default value for MMU v3 and v4.
config BR2_ARC_PAGE_SIZE_16K
bool "16KB"
depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
endchoice
config BR2_ARC_PAGE_SIZE
string
default "4K" if BR2_ARC_PAGE_SIZE_4K
default "8K" if BR2_ARC_PAGE_SIZE_8K
default "16K" if BR2_ARC_PAGE_SIZE_16K
# vim: ft=kconfig
# -*- mode:kconfig; -*-