Blame - arch/sh/Kconfig.cpu - SHIFTPHONES/mainline/linux

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Greg Kroah-Hartman	b244131	2017-11-01 15:07:57 +0100	[diff] [blame]	1	# SPDX-License-Identifier: GPL-2.0
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	2	menu "Processor features"
				3
				4	choice
Masanari Iida	6b2aac4	2012-04-14 00:14:11 +0900	[diff] [blame]	5	prompt "Endianness selection"
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	6	default CPU_LITTLE_ENDIAN
				7	help
				8	Some SuperH machines can be configured for either little or big
				9	endian byte order. These modes require different kernels.
				10
				11	config CPU_LITTLE_ENDIAN
				12	bool "Little Endian"
				13
				14	config CPU_BIG_ENDIAN
				15	bool "Big Endian"
Paul Mundt	64e34ca	2008-02-12 16:48:43 +0900	[diff] [blame]	16	depends on !CPU_SH5
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	17
				18	endchoice
				19
				20	config SH_FPU
Harvey Harrison	d7ef4fb	2007-12-11 13:49:35 +0900	[diff] [blame]	21	def_bool y
				22	prompt "FPU support"
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	23	depends on CPU_HAS_FPU
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	24	help
				25	Selecting this option will enable support for SH processors that
				26	have FPU units (ie, SH77xx).
				27
				28	This option must be set in order to enable the FPU.
				29
Paul Mundt	ea0e1a9	2007-11-21 15:58:01 +0900	[diff] [blame]	30	config SH64_FPU_DENORM_FLUSH
				31	bool "Flush floating point denorms to zero"
				32	depends on SH_FPU && SUPERH64
				33
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	34	config SH_FPU_EMU
Harvey Harrison	d7ef4fb	2007-12-11 13:49:35 +0900	[diff] [blame]	35	def_bool n
				36	prompt "FPU emulation support"
Kees Cook	0d57af1	2013-01-16 18:53:26 -0800	[diff] [blame]	37	depends on !SH_FPU
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	38	help
				39	Selecting this option will enable support for software FPU emulation.
				40	Most SH-3 users will want to say Y here, whereas most SH-4 users will
				41	want to say N.
				42
				43	config SH_DSP
Harvey Harrison	d7ef4fb	2007-12-11 13:49:35 +0900	[diff] [blame]	44	def_bool y
				45	prompt "DSP support"
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	46	depends on CPU_HAS_DSP
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	47	help
				48	Selecting this option will enable support for SH processors that
				49	have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
				50
				51	This option must be set in order to enable the DSP.
				52
				53	config SH_ADC
Harvey Harrison	d7ef4fb	2007-12-11 13:49:35 +0900	[diff] [blame]	54	def_bool y
				55	prompt "ADC support"
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	56	depends on CPU_SH3
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	57	help
				58	Selecting this option will allow the Linux kernel to use SH3 on-chip
				59	ADC module.
				60
				61	If unsure, say N.
				62
				63	config SH_STORE_QUEUES
				64	bool "Support for Store Queues"
				65	depends on CPU_SH4
				66	help
				67	Selecting this option will enable an in-kernel API for manipulating
				68	the store queues integrated in the SH-4 processors.
				69
				70	config SPECULATIVE_EXECUTION
				71	bool "Speculative subroutine return"
Matt Fleming	8c563a3	2010-02-04 23:46:13 +0000	[diff] [blame]	72	depends on CPU_SUBTYPE_SH7780 \|\| CPU_SUBTYPE_SH7785 \|\| CPU_SUBTYPE_SH7786
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	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
Paul Mundt	ea0e1a9	2007-11-21 15:58:01 +0900	[diff] [blame]	80	config SH64_ID2815_WORKAROUND
				81	bool "Include workaround for SH5-101 cut2 silicon defect ID2815"
				82	depends on CPU_SUBTYPE_SH5_101
				83
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	84	config CPU_HAS_INTEVT
				85	bool
				86
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	87	config CPU_HAS_IPR_IRQ
				88	bool
				89
				90	config 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
Paul Mundt	8263a67	2009-03-17 17:49:49 +0900	[diff] [blame]	100	config CPU_HAS_PTEAEX
				101	bool
				102
Paul Mundt	4690bdc	2007-11-09 13:45:42 +0900	[diff] [blame]	103	config CPU_HAS_DSP
				104	bool
				105
				106	config CPU_HAS_FPU
				107	bool
				108
				109	endmenu