[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / arch / sparc64 / Kconfig

# $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $
# For a description of the syntax of this configuration file,
# see the Configure script.
#

mainmenu "Linux/UltraSPARC Kernel Configuration"

config SPARC
	bool
	default y

config SPARC64
	bool
	default y
	help
	  SPARC is a family of RISC microprocessors designed and marketed by
	  Sun Microsystems, incorporated.  This port covers the newer 64-bit
	  UltraSPARC.  The UltraLinux project maintains both the SPARC32 and
	  SPARC64 ports; its web page is available at
	  <http://www.ultralinux.org/>.

config 64BIT
	def_bool y

config MMU
	bool
	default y

config TIME_INTERPOLATION
	bool
	default y

config ARCH_MAY_HAVE_PC_FDC
	bool
	default y

config ARCH_HAS_ILOG2_U32
	bool
	default n

config ARCH_HAS_ILOG2_U64
	bool
	default n

config AUDIT_ARCH
	bool
	default y

choice
	prompt "Kernel page size"
	default SPARC64_PAGE_SIZE_8KB

config SPARC64_PAGE_SIZE_8KB
	bool "8KB"
	help
	  This lets you select the page size of the kernel.

	  8KB and 64KB work quite well, since Sparc ELF sections
	  provide for up to 64KB alignment.

	  Therefore, 512KB and 4MB are for expert hackers only.

	  If you don't know what to do, choose 8KB.

config SPARC64_PAGE_SIZE_64KB
	bool "64KB"

config SPARC64_PAGE_SIZE_512KB
	bool "512KB"

config SPARC64_PAGE_SIZE_4MB
	bool "4MB"

endchoice

config SECCOMP
	bool "Enable seccomp to safely compute untrusted bytecode"
	depends on PROC_FS
	default y
	help
	  This kernel feature is useful for number crunching applications
	  that may need to compute untrusted bytecode during their
	  execution. By using pipes or other transports made available to
	  the process as file descriptors supporting the read/write
	  syscalls, it's possible to isolate those applications in
	  their own address space using seccomp. Once seccomp is
	  enabled via /proc/<pid>/seccomp, it cannot be disabled
	  and the task is only allowed to execute a few safe syscalls
	  defined by each seccomp mode.

	  If unsure, say Y. Only embedded should say N here.

source kernel/Kconfig.hz

source "init/Kconfig"

config SYSVIPC_COMPAT
	bool
	depends on COMPAT && SYSVIPC
	default y

config GENERIC_HARDIRQS
	bool
	default y

menu "General machine setup"

config SMP
	bool "Symmetric multi-processing support"
	---help---
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, say N. If you have a system with more than
	  one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all,
	  singleprocessor machines. On a singleprocessor machine, the kernel
	  will run faster if you say N here.

	  People using multiprocessor machines who say Y here should also say
	  Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	  Management" code will be disabled if you say Y here.

	  See also the <file:Documentation/smp.txt>,
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	  <http://www.tldp.org/docs.html#howto>.

	  If you don't know what to do here, say N.

config PREEMPT
	bool "Preemptible Kernel"
	help
	  This option reduces the latency of the kernel when reacting to
	  real-time or interactive events by allowing a low priority process to
	  be preempted even if it is in kernel mode executing a system call.
	  This allows applications to run more reliably even when the system is
	  under load.

	  Say Y here if you are building a kernel for a desktop, embedded
	  or real-time system.  Say N if you are unsure.

config NR_CPUS
	int "Maximum number of CPUs (2-64)"
	range 2 64
	depends on SMP
	default "32"

source "drivers/cpufreq/Kconfig"

config US3_FREQ
	tristate "UltraSPARC-III CPU Frequency driver"
	depends on CPU_FREQ
	select CPU_FREQ_TABLE
	help
	  This adds the CPUFreq driver for UltraSPARC-III processors.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If in doubt, say N.

config US2E_FREQ
	tristate "UltraSPARC-IIe CPU Frequency driver"
	depends on CPU_FREQ
	select CPU_FREQ_TABLE
	help
	  This adds the CPUFreq driver for UltraSPARC-IIe processors.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If in doubt, say N.

# Global things across all Sun machines.
config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

config GENERIC_FIND_NEXT_BIT
	bool
	default y

config GENERIC_HWEIGHT
	bool
	default y if !ULTRA_HAS_POPULATION_COUNT

config GENERIC_CALIBRATE_DELAY
	bool
	default y

choice
	prompt "SPARC64 Huge TLB Page Size"
	depends on HUGETLB_PAGE
	default HUGETLB_PAGE_SIZE_4MB

config HUGETLB_PAGE_SIZE_4MB
	bool "4MB"

config HUGETLB_PAGE_SIZE_512K
	depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
	bool "512K"

config HUGETLB_PAGE_SIZE_64K
Commit	Line	Data
1da177e4 LT	1	# $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $
	2	# For a description of the syntax of this configuration file,
	3	# see the Configure script.
	4	#
	5
	6	mainmenu "Linux/UltraSPARC Kernel Configuration"
	7
0b57ee9e AB	8	config SPARC
	9	bool
	10	default y
	11
5843e37e DM	12	config SPARC64
	13	bool
	14	default y
	15	help
	16	SPARC is a family of RISC microprocessors designed and marketed by
	17	Sun Microsystems, incorporated. This port covers the newer 64-bit
	18	UltraSPARC. The UltraLinux project maintains both the SPARC32 and
	19	SPARC64 ports; its web page is available at
	20	<http://www.ultralinux.org/>.
	21
1da177e4 LT	22	config 64BIT
	23	def_bool y
	24
	25	config MMU
	26	bool
	27	default y
	28
	29	config TIME_INTERPOLATION
	30	bool
	31	default y
	32
a08b6b79 AV	33	config ARCH_MAY_HAVE_PC_FDC
	34	bool
	35	default y
	36
f0d1b0b3 DH	37	config ARCH_HAS_ILOG2_U32
	38	bool
	39	default n
	40
	41	config ARCH_HAS_ILOG2_U64
	42	bool
	43	default n
	44
f6bc0c1c AV	45	config AUDIT_ARCH
	46	bool
	47	default y
	48
1da177e4 LT	49	choice
	50	prompt "Kernel page size"
	51	default SPARC64_PAGE_SIZE_8KB
	52
	53	config SPARC64_PAGE_SIZE_8KB
	54	bool "8KB"
	55	help
	56	This lets you select the page size of the kernel.
	57
	58	8KB and 64KB work quite well, since Sparc ELF sections
	59	provide for up to 64KB alignment.
	60
	61	Therefore, 512KB and 4MB are for expert hackers only.
	62
	63	If you don't know what to do, choose 8KB.
	64
	65	config SPARC64_PAGE_SIZE_64KB
	66	bool "64KB"
	67
	68	config SPARC64_PAGE_SIZE_512KB
	69	bool "512KB"
	70
	71	config SPARC64_PAGE_SIZE_4MB
	72	bool "4MB"
	73
	74	endchoice
	75
bb49bcda DM	76	config SECCOMP
	77	bool "Enable seccomp to safely compute untrusted bytecode"
	78	depends on PROC_FS
	79	default y
	80	help
	81	This kernel feature is useful for number crunching applications
	82	that may need to compute untrusted bytecode during their
	83	execution. By using pipes or other transports made available to
	84	the process as file descriptors supporting the read/write
	85	syscalls, it's possible to isolate those applications in
	86	their own address space using seccomp. Once seccomp is
	87	enabled via /proc/<pid>/seccomp, it cannot be disabled
	88	and the task is only allowed to execute a few safe syscalls
	89	defined by each seccomp mode.
	90
	91	If unsure, say Y. Only embedded should say N here.
	92
a6524813 DM	93	source kernel/Kconfig.hz
a6524813 DM	94
1da177e4 LT	95	source "init/Kconfig"
	96
	97	config SYSVIPC_COMPAT
	98	bool
	99	depends on COMPAT && SYSVIPC
	100	default y
	101
e18e2a00 DM	102	config GENERIC_HARDIRQS
	103	bool
	104	default y
	105
1da177e4 LT	106	menu "General machine setup"
1da177e4 LT	107
1da177e4 LT	108	config SMP
	109	bool "Symmetric multi-processing support"
	110	---help---
	111	This enables support for systems with more than one CPU. If you have
	112	a system with only one CPU, say N. If you have a system with more than
	113	one CPU, say Y.
	114
	115	If you say N here, the kernel will run on single and multiprocessor
	116	machines, but will use only one CPU of a multiprocessor machine. If
	117	you say Y here, the kernel will run on many, but not all,
	118	singleprocessor machines. On a singleprocessor machine, the kernel
	119	will run faster if you say N here.
	120
	121	People using multiprocessor machines who say Y here should also say
	122	Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	123	Management" code will be disabled if you say Y here.
	124
	125	See also the <file:Documentation/smp.txt>,
	126	<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	127	<http://www.tldp.org/docs.html#howto>.
	128
	129	If you don't know what to do here, say N.
	130
	131	config PREEMPT
	132	bool "Preemptible Kernel"
	133	help
	134	This option reduces the latency of the kernel when reacting to
	135	real-time or interactive events by allowing a low priority process to
	136	be preempted even if it is in kernel mode executing a system call.
	137	This allows applications to run more reliably even when the system is
	138	under load.
	139
	140	Say Y here if you are building a kernel for a desktop, embedded
	141	or real-time system. Say N if you are unsure.
	142
	143	config NR_CPUS
	144	int "Maximum number of CPUs (2-64)"
	145	range 2 64
	146	depends on SMP
	147	default "32"
	148
	149	source "drivers/cpufreq/Kconfig"
	150
	151	config US3_FREQ
	152	tristate "UltraSPARC-III CPU Frequency driver"
	153	depends on CPU_FREQ
	154	select CPU_FREQ_TABLE
	155	help
	156	This adds the CPUFreq driver for UltraSPARC-III processors.
	157
	158	For details, take a look at <file:Documentation/cpu-freq>.
	159
	160	If in doubt, say N.
	161
	162	config US2E_FREQ
	163	tristate "UltraSPARC-IIe CPU Frequency driver"
	164	depends on CPU_FREQ
	165	select CPU_FREQ_TABLE
	166	help
	167	This adds the CPUFreq driver for UltraSPARC-IIe processors.
	168
	169	For details, take a look at <file:Documentation/cpu-freq>.
	170
	171	If in doubt, say N.
172
1da177e4 LT	173	# Global things across all Sun machines.
	174	config RWSEM_GENERIC_SPINLOCK
	175	bool
	176
	177	config RWSEM_XCHGADD_ALGORITHM
	178	bool
	179	default y
	180
2d78d4be AM	181	config GENERIC_FIND_NEXT_BIT
	182	bool
	183	default y
	184
	185	config GENERIC_HWEIGHT
	186	bool
	187	default y if !ULTRA_HAS_POPULATION_COUNT
	188
1da177e4 LT	189	config GENERIC_CALIBRATE_DELAY
	190	bool
	191	default y
	192
	193	choice
	194	prompt "SPARC64 Huge TLB Page Size"
	195	depends on HUGETLB_PAGE
	196	default HUGETLB_PAGE_SIZE_4MB
	197
	198	config HUGETLB_PAGE_SIZE_4MB
	199	bool "4MB"
	200
	201	config HUGETLB_PAGE_SIZE_512K
dcc1e8dd	202	depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
1da177e4 LT	203	bool "512K"
	204
	205	config HUGETLB_PAGE_SIZE_64K