[deliverable/linux.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_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

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