ARC: Add support for ARC HS38 with Quad MAC & FPU
We used to build everything for pretty much baseline ARC HS capable of runnig Linux kernel, which was ARC HS38/48 with MMU and caches. But there's a fully featured ARC HS with additional support for - Dual & quad integer multiply and MAC operations - Double-precision floating-point unit It corresponds to the following ARC HS templates in ARChitect: hs38_slc_full. In fact existing HSDK board uses exactly this configuration in its SoC and this is recommended configuration for Linux use-cases. To make life simpler we have corresponding "-mcpu" and "--with-cpu" options in ARC GCC port so we're going to use it and get binaries built accordingly optimized. And while at it added help message so users may better understand what they are dealing with. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Cc: Peter Korsgaard <peter@korsgaard.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
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@ -13,13 +13,30 @@ config BR2_arc770d
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config BR2_archs38
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config BR2_archs38
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bool "ARC HS38"
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bool "ARC HS38"
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help
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Generic ARC HS capable of running Linux, i.e. with MMU,
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caches and multiplier. Also it corresponds to the default
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configuration in older GNU toolchain versions.
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If you're not sure which version of ARC HS core you build for
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keep this one.
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config BR2_archs38_full
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bool "ARC HS38 with Quad MAC & FPU"
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help
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Fully featured ARC HS with additional support for
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- Dual- and quad multiply and MC oprations
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- Double-precision FPU
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It corresponds to "hs38_slc_full" ARC HS template in
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ARChitect.
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endchoice
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endchoice
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# Choice of atomic instructions presence
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# Choice of atomic instructions presence
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config BR2_ARC_ATOMIC_EXT
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config BR2_ARC_ATOMIC_EXT
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bool "Atomic extension (LLOCK/SCOND instructions)"
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bool "Atomic extension (LLOCK/SCOND instructions)"
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default y if BR2_arc770d || BR2_archs38
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default y if BR2_arc770d || BR2_archs38 || BR2_archs38_full
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config BR2_ARCH
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config BR2_ARCH
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default "arc" if BR2_arcle
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default "arc" if BR2_arcle
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@ -37,10 +54,11 @@ config BR2_GCC_TARGET_CPU
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default "arc700" if BR2_arc750d
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default "arc700" if BR2_arc750d
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default "arc700" if BR2_arc770d
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default "arc700" if BR2_arc770d
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default "archs" if BR2_archs38
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default "archs" if BR2_archs38
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default "hs38_linux" if BR2_archs38_full
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config BR2_READELF_ARCH_NAME
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config BR2_READELF_ARCH_NAME
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default "ARCompact" if BR2_arc750d || BR2_arc770d
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default "ARCompact" if BR2_arc750d || BR2_arc770d
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default "ARCv2" if BR2_archs38
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default "ARCv2" if BR2_archs38 || BR2_archs38_full
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choice
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choice
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prompt "MMU Page Size"
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prompt "MMU Page Size"
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@ -60,7 +78,7 @@ choice
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config BR2_ARC_PAGE_SIZE_4K
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config BR2_ARC_PAGE_SIZE_4K
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bool "4KB"
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bool "4KB"
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depends on BR2_arc770d || BR2_archs38
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depends on BR2_arc770d || BR2_archs38 || BR2_archs38_full
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config BR2_ARC_PAGE_SIZE_8K
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config BR2_ARC_PAGE_SIZE_8K
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bool "8KB"
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bool "8KB"
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@ -70,7 +88,7 @@ config BR2_ARC_PAGE_SIZE_8K
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config BR2_ARC_PAGE_SIZE_16K
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config BR2_ARC_PAGE_SIZE_16K
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bool "16KB"
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bool "16KB"
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depends on BR2_arc770d || BR2_archs38
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depends on BR2_arc770d || BR2_archs38 || BR2_archs38_full
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endchoice
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endchoice
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