[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

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