[net-next-2.6.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 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
f6bc0c1c AV	37	config AUDIT_ARCH
	38	bool
	39	default y
	40
1da177e4 LT	41	choice
	42	prompt "Kernel page size"
	43	default SPARC64_PAGE_SIZE_8KB
	44
	45	config SPARC64_PAGE_SIZE_8KB
	46	bool "8KB"
	47	help
	48	This lets you select the page size of the kernel.
	49
	50	8KB and 64KB work quite well, since Sparc ELF sections
	51	provide for up to 64KB alignment.
	52
	53	Therefore, 512KB and 4MB are for expert hackers only.
	54
	55	If you don't know what to do, choose 8KB.
	56
	57	config SPARC64_PAGE_SIZE_64KB
	58	bool "64KB"
	59
	60	config SPARC64_PAGE_SIZE_512KB
	61	bool "512KB"
	62
	63	config SPARC64_PAGE_SIZE_4MB
	64	bool "4MB"
	65
	66	endchoice
	67
bb49bcda DM	68	config SECCOMP
	69	bool "Enable seccomp to safely compute untrusted bytecode"
	70	depends on PROC_FS
	71	default y
	72	help
	73	This kernel feature is useful for number crunching applications
	74	that may need to compute untrusted bytecode during their
	75	execution. By using pipes or other transports made available to
	76	the process as file descriptors supporting the read/write
	77	syscalls, it's possible to isolate those applications in
	78	their own address space using seccomp. Once seccomp is
	79	enabled via /proc/<pid>/seccomp, it cannot be disabled
	80	and the task is only allowed to execute a few safe syscalls
	81	defined by each seccomp mode.
	82
	83	If unsure, say Y. Only embedded should say N here.
	84
a6524813 DM	85	source kernel/Kconfig.hz
a6524813 DM	86
1da177e4 LT	87	source "init/Kconfig"
	88
	89	config SYSVIPC_COMPAT
	90	bool
	91	depends on COMPAT && SYSVIPC
	92	default y
	93
e18e2a00 DM	94	config GENERIC_HARDIRQS
	95	bool
	96	default y
	97
1da177e4 LT	98	menu "General machine setup"
1da177e4 LT	99
1da177e4 LT	100	config SMP
	101	bool "Symmetric multi-processing support"
	102	---help---
	103	This enables support for systems with more than one CPU. If you have
	104	a system with only one CPU, say N. If you have a system with more than
	105	one CPU, say Y.
	106
	107	If you say N here, the kernel will run on single and multiprocessor
	108	machines, but will use only one CPU of a multiprocessor machine. If
	109	you say Y here, the kernel will run on many, but not all,
	110	singleprocessor machines. On a singleprocessor machine, the kernel
	111	will run faster if you say N here.
	112
	113	People using multiprocessor machines who say Y here should also say
	114	Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	115	Management" code will be disabled if you say Y here.
	116
	117	See also the <file:Documentation/smp.txt>,
	118	<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	119	<http://www.tldp.org/docs.html#howto>.
	120
	121	If you don't know what to do here, say N.
	122
	123	config PREEMPT
	124	bool "Preemptible Kernel"
	125	help
	126	This option reduces the latency of the kernel when reacting to
	127	real-time or interactive events by allowing a low priority process to
	128	be preempted even if it is in kernel mode executing a system call.
	129	This allows applications to run more reliably even when the system is
	130	under load.
	131
	132	Say Y here if you are building a kernel for a desktop, embedded
	133	or real-time system. Say N if you are unsure.
	134
	135	config NR_CPUS
	136	int "Maximum number of CPUs (2-64)"
	137	range 2 64
	138	depends on SMP
	139	default "32"
	140
	141	source "drivers/cpufreq/Kconfig"
	142
	143	config US3_FREQ
	144	tristate "UltraSPARC-III CPU Frequency driver"
	145	depends on CPU_FREQ
	146	select CPU_FREQ_TABLE
	147	help
	148	This adds the CPUFreq driver for UltraSPARC-III processors.
	149
	150	For details, take a look at <file:Documentation/cpu-freq>.
	151
	152	If in doubt, say N.
	153
	154	config US2E_FREQ
	155	tristate "UltraSPARC-IIe CPU Frequency driver"
	156	depends on CPU_FREQ
	157	select CPU_FREQ_TABLE
	158	help
	159	This adds the CPUFreq driver for UltraSPARC-IIe processors.
	160
	161	For details, take a look at <file:Documentation/cpu-freq>.
	162
	163	If in doubt, say N.
164
1da177e4 LT	165	# Global things across all Sun machines.
	166	config RWSEM_GENERIC_SPINLOCK
	167	bool
	168
	169	config RWSEM_XCHGADD_ALGORITHM
	170	bool
	171	default y
	172
2d78d4be AM	173	config GENERIC_FIND_NEXT_BIT
	174	bool
	175	default y
	176
	177	config GENERIC_HWEIGHT
	178	bool
	179	default y if !ULTRA_HAS_POPULATION_COUNT
	180
1da177e4 LT	181	config GENERIC_CALIBRATE_DELAY
	182	bool
	183	default y
	184
	185	choice
	186	prompt "SPARC64 Huge TLB Page Size"
	187	depends on HUGETLB_PAGE
	188	default HUGETLB_PAGE_SIZE_4MB
	189
	190	config HUGETLB_PAGE_SIZE_4MB
	191	bool "4MB"
	192
	193	config HUGETLB_PAGE_SIZE_512K
dcc1e8dd	194	depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
1da177e4 LT	195	bool "512K"
	196
	197	config HUGETLB_PAGE_SIZE_64K