[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 GENERIC_TIME
	bool
	default y

config GENERIC_CMOS_UPDATE
	bool
	default y

config GENERIC_CLOCKEVENTS
	bool
	default y

config 64BIT
	def_bool y

config MMU
	bool
	default y

config QUICKLIST
	bool
	default y

config STACKTRACE_SUPPORT
	bool
	default y

config LOCKDEP_SUPPORT
	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

config ARCH_NO_VIRT_TO_BUS
	def_bool y

config OF
	def_bool y

config GENERIC_HARDIRQS_NO__DO_IRQ
	bool
	def_bool 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

config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs"
	depends on SMP
	select HOTPLUG
	---help---
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu/cpu#.
	  Say N if you want to disable CPU hotplug.

source "init/Kconfig"

config SYSVIPC_COMPAT
	bool
	depends on COMPAT && SYSVIPC
	default y

config GENERIC_HARDIRQS
	bool
	default y

menu "General machine setup"

source "kernel/time/Kconfig"

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 NR_CPUS
	int "Maximum number of CPUs (2-1024)"
	range 2 1024
	depends on SMP
	default "64"

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 GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

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
112f4871 DM	22	config GENERIC_TIME
	23	bool
	24	default y
	25
82644459 TG	26	config GENERIC_CMOS_UPDATE
	27	bool
	28	default y
	29
112f4871 DM	30	config GENERIC_CLOCKEVENTS
	31	bool
	32	default y
	33
1da177e4 LT	34	config 64BIT
	35	def_bool y
	36
	37	config MMU
	38	bool
	39	default y
	40
3a2cba99 DM	41	config QUICKLIST
	42	bool
	43	default y
	44
10e26723 DM	45	config STACKTRACE_SUPPORT
	46	bool
	47	default y
	48
	49	config LOCKDEP_SUPPORT
	50	bool
	51	default y
	52
a08b6b79 AV	53	config ARCH_MAY_HAVE_PC_FDC
	54	bool
	55	default y
	56
f0d1b0b3 DH	57	config ARCH_HAS_ILOG2_U32
	58	bool
	59	default n
	60
	61	config ARCH_HAS_ILOG2_U64
	62	bool
	63	default n
	64
f6bc0c1c AV	65	config AUDIT_ARCH
	66	bool
	67	default y
	68
0785b9dc SR	69	config ARCH_NO_VIRT_TO_BUS
	70	def_bool y
	71
97e873e5 SR	72	config OF
	73	def_bool y
	74
8d57d3ad DM	75	config GENERIC_HARDIRQS_NO__DO_IRQ
	76	bool
	77	def_bool y
	78
1da177e4 LT	79	choice
	80	prompt "Kernel page size"
	81	default SPARC64_PAGE_SIZE_8KB
	82
	83	config SPARC64_PAGE_SIZE_8KB
	84	bool "8KB"
	85	help
	86	This lets you select the page size of the kernel.
	87
	88	8KB and 64KB work quite well, since Sparc ELF sections
	89	provide for up to 64KB alignment.
	90
	91	Therefore, 512KB and 4MB are for expert hackers only.
	92
	93	If you don't know what to do, choose 8KB.
	94
	95	config SPARC64_PAGE_SIZE_64KB
	96	bool "64KB"
	97
	98	config SPARC64_PAGE_SIZE_512KB
	99	bool "512KB"
	100
	101	config SPARC64_PAGE_SIZE_4MB
	102	bool "4MB"
	103
	104	endchoice
	105
bb49bcda DM	106	config SECCOMP
	107	bool "Enable seccomp to safely compute untrusted bytecode"
	108	depends on PROC_FS
	109	default y
	110	help
	111	This kernel feature is useful for number crunching applications
	112	that may need to compute untrusted bytecode during their
	113	execution. By using pipes or other transports made available to
	114	the process as file descriptors supporting the read/write
	115	syscalls, it's possible to isolate those applications in
	116	their own address space using seccomp. Once seccomp is
	117	enabled via /proc/<pid>/seccomp, it cannot be disabled
	118	and the task is only allowed to execute a few safe syscalls
	119	defined by each seccomp mode.
	120
	121	If unsure, say Y. Only embedded should say N here.
	122
a6524813 DM	123	source kernel/Kconfig.hz
a6524813 DM	124
4f0234f4 DM	125	config HOTPLUG_CPU
	126	bool "Support for hot-pluggable CPUs"
	127	depends on SMP
	128	select HOTPLUG
	129	---help---
	130	Say Y here to experiment with turning CPUs off and on. CPUs
	131	can be controlled through /sys/devices/system/cpu/cpu#.
	132	Say N if you want to disable CPU hotplug.
	133
1da177e4 LT	134	source "init/Kconfig"
	135
	136	config SYSVIPC_COMPAT
	137	bool
	138	depends on COMPAT && SYSVIPC
	139	default y
	140
e18e2a00 DM	141	config GENERIC_HARDIRQS
	142	bool
	143	default y
	144
1da177e4 LT	145	menu "General machine setup"
1da177e4 LT	146
112f4871 DM	147	source "kernel/time/Kconfig"
112f4871 DM	148
1da177e4 LT	149	config SMP
	150	bool "Symmetric multi-processing support"
	151	---help---
	152	This enables support for systems with more than one CPU. If you have
	153	a system with only one CPU, say N. If you have a system with more than
	154	one CPU, say Y.
	155
	156	If you say N here, the kernel will run on single and multiprocessor
	157	machines, but will use only one CPU of a multiprocessor machine. If
	158	you say Y here, the kernel will run on many, but not all,
	159	singleprocessor machines. On a singleprocessor machine, the kernel
	160	will run faster if you say N here.
	161
	162	People using multiprocessor machines who say Y here should also say
	163	Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	164	Management" code will be disabled if you say Y here.
	165
	166	See also the <file:Documentation/smp.txt>,
	167	<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	168	<http://www.tldp.org/docs.html#howto>.
	169
	170	If you don't know what to do here, say N.
	171
1da177e4	172	config NR_CPUS
22adb358 DM	173	int "Maximum number of CPUs (2-1024)"
22adb358 DM	174	range 2 1024
1da177e4	175	depends on SMP
22adb358	176	default "64"
1da177e4 LT	177
	178	source "drivers/cpufreq/Kconfig"
	179
	180	config US3_FREQ
	181	tristate "UltraSPARC-III CPU Frequency driver"
	182	depends on CPU_FREQ
	183	select CPU_FREQ_TABLE
	184	help
	185	This adds the CPUFreq driver for UltraSPARC-III processors.
	186
	187	For details, take a look at <file:Documentation/cpu-freq>.
	188
	189	If in doubt, say N.
	190
	191	config US2E_FREQ
	192	tristate "UltraSPARC-IIe CPU Frequency driver"
	193	depends on CPU_FREQ
	194	select CPU_FREQ_TABLE
	195	help
	196	This adds the CPUFreq driver for UltraSPARC-IIe processors.
	197
	198	For details, take a look at <file:Documentation/cpu-freq>.
	199
	200	If in doubt, say N.
	201
1da177e4	202	# Global things across all Sun machines.
95c354fe NP	203	config GENERIC_LOCKBREAK
	204	bool
	205	default y
	206	depends on SMP && PREEMPT
	207
1da177e4 LT	208	config RWSEM_GENERIC_SPINLOCK
	209	bool
	210
	211	config RWSEM_XCHGADD_ALGORITHM
	212	bool
	213	default y
	214
2d78d4be AM	215	config GENERIC_FIND_NEXT_BIT
	216	bool
	217	default y
	218
	219	config GENERIC_HWEIGHT
	220	bool
	221	default y if !ULTRA_HAS_POPULATION_COUNT
	222
1da177e4 LT	223	config GENERIC_CALIBRATE_DELAY
	224	bool
	225	default y
	226
	227	choice
	228	prompt "SPARC64 Huge TLB Page Size"
	229	depends on HUGETLB_PAGE
	230	default HUGETLB_PAGE_SIZE_4MB
	231
	232	config HUGETLB_PAGE_SIZE_4MB
	233	bool "4MB"
	234
	235	config HUGETLB_PAGE_SIZE_512K
dcc1e8dd	236	depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
1da177e4 LT	237	bool "512K"
	238
	239	config HUGETLB_PAGE_SIZE_64K