[deliverable/linux.git] / arch / sparc64 / Kconfig

# sparc64 configuration
mainmenu "Linux Kernel Configuration for 64-bit SPARC"

config SPARC
	bool
	default y
	select HAVE_OPROFILE
	select HAVE_KPROBES
	select HAVE_KRETPROBES

config SPARC64
	bool
	default y
	select HAVE_IDE
	select HAVE_LMB
	select HAVE_ARCH_KGDB

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 IOMMU_HELPER
	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 HAVE_SETUP_PER_CPU_AREA
	def_bool 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 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 single-processor machines.
	  On a single-processor machine, the kernel will run faster if you say
	  N here.

	  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
05d515ef DM	1	# sparc64 configuration
05d515ef DM	2	mainmenu "Linux Kernel Configuration for 64-bit SPARC"
1da177e4	3
0b57ee9e AB	4	config SPARC
	5	bool
	6	default y
42d4b839	7	select HAVE_OPROFILE
3f550096	8	select HAVE_KPROBES
9edddaa2	9	select HAVE_KRETPROBES
0b57ee9e	10
5843e37e DM	11	config SPARC64
	12	bool
	13	default y
ec7748b5	14	select HAVE_IDE
d9b2b2a2	15	select HAVE_LMB
e2fdd7fd	16	select HAVE_ARCH_KGDB
5843e37e	17
112f4871 DM	18	config GENERIC_TIME
	19	bool
	20	default y
	21
82644459 TG	22	config GENERIC_CMOS_UPDATE
	23	bool
	24	default y
	25
112f4871 DM	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
d284142c DM	37	config IOMMU_HELPER
	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 Z	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
988c388a	69	config HAVE_SETUP_PER_CPU_AREA
b32ef636	70	def_bool y
b32ef636	71
0785b9dc SR	72	config ARCH_NO_VIRT_TO_BUS
	73	def_bool y
	74
97e873e5 SR	75	config OF
	76	def_bool y
	77
8d57d3ad DM	78	config GENERIC_HARDIRQS_NO__DO_IRQ
	79	bool
	80	def_bool y
	81
1da177e4 LT	82	choice
	83	prompt "Kernel page size"
	84	default SPARC64_PAGE_SIZE_8KB
	85
	86	config SPARC64_PAGE_SIZE_8KB
	87	bool "8KB"
	88	help
	89	This lets you select the page size of the kernel.
	90
05d515ef	91	8KB and 64KB work quite well, since SPARC ELF sections
1da177e4 LT	92	provide for up to 64KB alignment.
	93
	94	Therefore, 512KB and 4MB are for expert hackers only.
	95
	96	If you don't know what to do, choose 8KB.
	97
	98	config SPARC64_PAGE_SIZE_64KB
	99	bool "64KB"
	100
	101	config SPARC64_PAGE_SIZE_512KB
	102	bool "512KB"
	103
	104	config SPARC64_PAGE_SIZE_4MB
	105	bool "4MB"
	106
	107	endchoice
	108
bb49bcda DM	109	config SECCOMP
	110	bool "Enable seccomp to safely compute untrusted bytecode"
	111	depends on PROC_FS
	112	default y
	113	help
	114	This kernel feature is useful for number crunching applications
	115	that may need to compute untrusted bytecode during their
	116	execution. By using pipes or other transports made available to
	117	the process as file descriptors supporting the read/write
	118	syscalls, it's possible to isolate those applications in
	119	their own address space using seccomp. Once seccomp is
	120	enabled via /proc/<pid>/seccomp, it cannot be disabled
	121	and the task is only allowed to execute a few safe syscalls
	122	defined by each seccomp mode.
	123
	124	If unsure, say Y. Only embedded should say N here.
	125
a6524813 DM	126	source kernel/Kconfig.hz
a6524813 DM	127
4f0234f4 DM	128	config HOTPLUG_CPU
	129	bool "Support for hot-pluggable CPUs"
	130	depends on SMP
	131	select HOTPLUG
05d515ef	132	help
4f0234f4 DM	133	Say Y here to experiment with turning CPUs off and on. CPUs
	134	can be controlled through /sys/devices/system/cpu/cpu#.
	135	Say N if you want to disable CPU hotplug.
	136
1da177e4 LT	137	source "init/Kconfig"
1da177e4 LT	138
e18e2a00 DM	139	config GENERIC_HARDIRQS
	140	bool
	141	default y
	142
1da177e4 LT	143	menu "General machine setup"
1da177e4 LT	144
112f4871 DM	145	source "kernel/time/Kconfig"
112f4871 DM	146
1da177e4 LT	147	config SMP
1da177e4 LT	148	bool "Symmetric multi-processing support"
05d515ef	149	help
1da177e4 LT	150	This enables support for systems with more than one CPU. If you have
	151	a system with only one CPU, say N. If you have a system with more than
	152	one CPU, say Y.
	153
	154	If you say N here, the kernel will run on single and multiprocessor
	155	machines, but will use only one CPU of a multiprocessor machine. If
05d515ef DM	156	you say Y here, the kernel will run on single-processor machines.
	157	On a single-processor machine, the kernel will run faster if you say
	158	N here.
1da177e4 LT	159
	160	If you don't know what to do here, say N.
	161
1da177e4	162	config NR_CPUS
22adb358 DM	163	int "Maximum number of CPUs (2-1024)"
22adb358 DM	164	range 2 1024
1da177e4	165	depends on SMP
22adb358	166	default "64"
1da177e4 LT	167
	168	source "drivers/cpufreq/Kconfig"
	169
	170	config US3_FREQ
	171	tristate "UltraSPARC-III CPU Frequency driver"
	172	depends on CPU_FREQ
	173	select CPU_FREQ_TABLE
	174	help
	175	This adds the CPUFreq driver for UltraSPARC-III processors.
	176
	177	For details, take a look at <file:Documentation/cpu-freq>.
	178
	179	If in doubt, say N.
	180
	181	config US2E_FREQ
	182	tristate "UltraSPARC-IIe CPU Frequency driver"
	183	depends on CPU_FREQ
	184	select CPU_FREQ_TABLE
	185	help
	186	This adds the CPUFreq driver for UltraSPARC-IIe processors.
	187
	188	For details, take a look at <file:Documentation/cpu-freq>.
	189
	190	If in doubt, say N.
	191
1da177e4	192	# Global things across all Sun machines.
95c354fe NP	193	config GENERIC_LOCKBREAK
	194	bool
	195	default y
	196	depends on SMP && PREEMPT
	197
1da177e4 LT	198	config RWSEM_GENERIC_SPINLOCK
	199	bool
	200
	201	config RWSEM_XCHGADD_ALGORITHM
	202	bool
	203	default y
	204
2d78d4be AM	205	config GENERIC_FIND_NEXT_BIT
	206	bool
	207	default y
	208
	209	config GENERIC_HWEIGHT
	210	bool
	211	default y if !ULTRA_HAS_POPULATION_COUNT
	212
1da177e4 LT	213	config GENERIC_CALIBRATE_DELAY
	214	bool
	215	default y
	216
	217	choice
	218	prompt "SPARC64 Huge TLB Page Size"
	219	depends on HUGETLB_PAGE
	220	default HUGETLB_PAGE_SIZE_4MB
	221
	222	config HUGETLB_PAGE_SIZE_4MB
	223	bool "4MB"
	224
	225	config HUGETLB_PAGE_SIZE_512K
dcc1e8dd	226	depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
1da177e4 LT	227	bool "512K"
	228
	229	config HUGETLB_PAGE_SIZE_64K