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# SPDX-License-Identifier: GPL-2.0 menu "Processor features" choice prompt "Endianness selection" default CPU_LITTLE_ENDIAN help Some SuperH machines can be configured for either little or big endian byte order. These modes require different kernels. config CPU_LITTLE_ENDIAN bool "Little Endian" config CPU_BIG_ENDIAN bool "Big Endian" depends on !CPU_SH5 endchoice config SH_FPU def_bool y prompt "FPU support" depends on CPU_HAS_FPU help Selecting this option will enable support for SH processors that have FPU units (ie, SH77xx). This option must be set in order to enable the FPU. config SH64_FPU_DENORM_FLUSH bool "Flush floating point denorms to zero" depends on SH_FPU && SUPERH64 config SH_FPU_EMU def_bool n prompt "FPU emulation support" depends on !SH_FPU help Selecting this option will enable support for software FPU emulation. Most SH-3 users will want to say Y here, whereas most SH-4 users will want to say N. config SH_DSP def_bool y prompt "DSP support" depends on CPU_HAS_DSP help Selecting this option will enable support for SH processors that have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP). This option must be set in order to enable the DSP. config SH_ADC def_bool y prompt "ADC support" depends on CPU_SH3 help Selecting this option will allow the Linux kernel to use SH3 on-chip ADC module. If unsure, say N. config SH_STORE_QUEUES bool "Support for Store Queues" depends on CPU_SH4 help Selecting this option will enable an in-kernel API for manipulating the store queues integrated in the SH-4 processors. config SPECULATIVE_EXECUTION bool "Speculative subroutine return" depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7786 help This enables support for a speculative instruction fetch for subroutine return. There are various pitfalls associated with this, as outlined in the SH7780 hardware manual. If unsure, say N. config SH64_ID2815_WORKAROUND bool "Include workaround for SH5-101 cut2 silicon defect ID2815" depends on CPU_SUBTYPE_SH5_101 config CPU_HAS_INTEVT bool config CPU_HAS_IPR_IRQ bool config CPU_HAS_SR_RB bool help This will enable the use of SR.RB register bank usage. Processors that are lacking this bit must have another method in place for accomplishing what is taken care of by the banked registers. See <file:Documentation/sh/register-banks.txt> for further information on SR.RB and register banking in the kernel in general. config CPU_HAS_PTEAEX bool config CPU_HAS_DSP bool config CPU_HAS_FPU bool endmenu
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