[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

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