1menu "Processor features" 2 3choice 4 prompt "Endianness selection" 5 default CPU_LITTLE_ENDIAN 6 help 7 Some SuperH machines can be configured for either little or big 8 endian byte order. These modes require different kernels. 9 10config CPU_LITTLE_ENDIAN 11 bool "Little Endian" 12 13config CPU_BIG_ENDIAN 14 bool "Big Endian" 15 depends on !CPU_SH5 16 17endchoice 18 19config SH_FPU 20 def_bool y 21 prompt "FPU support" 22 depends on CPU_HAS_FPU 23 help 24 Selecting this option will enable support for SH processors that 25 have FPU units (ie, SH77xx). 26 27 This option must be set in order to enable the FPU. 28 29config SH64_FPU_DENORM_FLUSH 30 bool "Flush floating point denorms to zero" 31 depends on SH_FPU && SUPERH64 32 33config SH_FPU_EMU 34 def_bool n 35 prompt "FPU emulation support" 36 depends on !SH_FPU && EXPERIMENTAL 37 help 38 Selecting this option will enable support for software FPU emulation. 39 Most SH-3 users will want to say Y here, whereas most SH-4 users will 40 want to say N. 41 42config SH_DSP 43 def_bool y 44 prompt "DSP support" 45 depends on CPU_HAS_DSP 46 help 47 Selecting this option will enable support for SH processors that 48 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP). 49 50 This option must be set in order to enable the DSP. 51 52config SH_ADC 53 def_bool y 54 prompt "ADC support" 55 depends on CPU_SH3 56 help 57 Selecting this option will allow the Linux kernel to use SH3 on-chip 58 ADC module. 59 60 If unsure, say N. 61 62config SH_STORE_QUEUES 63 bool "Support for Store Queues" 64 depends on CPU_SH4 65 help 66 Selecting this option will enable an in-kernel API for manipulating 67 the store queues integrated in the SH-4 processors. 68 69config SPECULATIVE_EXECUTION 70 bool "Speculative subroutine return" 71 depends on EXPERIMENTAL 72 depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7786 73 help 74 This enables support for a speculative instruction fetch for 75 subroutine return. There are various pitfalls associated with 76 this, as outlined in the SH7780 hardware manual. 77 78 If unsure, say N. 79 80config SH64_ID2815_WORKAROUND 81 bool "Include workaround for SH5-101 cut2 silicon defect ID2815" 82 depends on CPU_SUBTYPE_SH5_101 83 84config CPU_HAS_INTEVT 85 bool 86 87config CPU_HAS_IPR_IRQ 88 bool 89 90config CPU_HAS_SR_RB 91 bool 92 help 93 This will enable the use of SR.RB register bank usage. Processors 94 that are lacking this bit must have another method in place for 95 accomplishing what is taken care of by the banked registers. 96 97 See <file:Documentation/sh/register-banks.txt> for further 98 information on SR.RB and register banking in the kernel in general. 99 100config CPU_HAS_PTEAEX 101 bool 102 103config CPU_HAS_DSP 104 bool 105 106config CPU_HAS_FPU 107 bool 108 109endmenu 110