[mirror_ubuntu-bionic-kernel.git] / arch / sparc / Kconfig

# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux/SPARC Kernel Configuration"

config MMU
	bool
	default y

config HIGHMEM
	bool
	default y

config ZONE_DMA
	bool
	default y

config GENERIC_ISA_DMA
	bool
	default y

config ARCH_NO_VIRT_TO_BUS
	def_bool y

config OF
	def_bool y

config HZ
	int
	default 100

source "init/Kconfig"

menu "General machine setup"

config SMP
	bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
	---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 <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 (2-32)"
	range 2 32
	depends on SMP
	default "32"

config SPARC
	bool
	default y
	select HAVE_IDE
	select HAVE_OPROFILE
	select HAVE_ARCH_KGDB if !SMP
	select HAVE_ARCH_TRACEHOOK

# Identify this as a Sparc32 build
config SPARC32
	bool
	default y
	help
	  SPARC is a family of RISC microprocessors designed and marketed by
	  Sun Microsystems, incorporated.  They are very widely found in Sun
	  workstations and clones. This port covers the original 32-bit SPARC;
	  it is old and stable and usually considered one of the "big three"
	  along with the Intel and Alpha ports.  The UltraLinux project
	  maintains both the SPARC32 and SPARC64 ports; its web page is
	  available at <http://www.ultralinux.org/>.

# Global things across all Sun machines.
config ISA
	bool
	help
	  ISA is found on Espresso only and is not supported currently.
	  Say N

config EISA
	bool
	help
	  EISA is not supported.
	  Say N

config MCA
	bool
	help
	  MCA is not supported.
	  Say N

config PCMCIA
	tristate
	---help---
	  Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
	  computer.  These are credit-card size devices such as network cards,
	  modems or hard drives often used with laptops computers.  There are
	  actually two varieties of these cards: the older 16 bit PCMCIA cards
	  and the newer 32 bit CardBus cards.  If you want to use CardBus
	  cards, you need to say Y here and also to "CardBus support" below.

	  To use your PC-cards, you will need supporting software from David
	  Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
	  for location).  Please also read the PCMCIA-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

	  To compile this driver as modules, choose M here: the
	  modules will be called pcmcia_core and ds.

config SBUS
	bool
	default y

config SBUSCHAR
	bool
	default y

config SERIAL_CONSOLE
	bool
	default y
	---help---
	  If you say Y here, it will be possible to use a serial port as the
	  system console (the system console is the device which receives all
	  kernel messages and warnings and which allows logins in single user
	  mode). This could be useful if some terminal or printer is connected
	  to that serial port.

	  Even if you say Y here, the currently visible virtual console
	  (/dev/tty0) will still be used as the system console by default, but
	  you can alter that using a kernel command line option such as
	  "console=ttyS1". (Try "man bootparam" or see the documentation of
	  your boot loader (silo) about how to pass options to the kernel at
	  boot time.)

	  If you don't have a graphics card installed and you say Y here, the
	  kernel will automatically use the first serial line, /dev/ttyS0, as
	  system console.

	  If unsure, say N.

config SUN_AUXIO
	bool
	default y

config SUN_IO
	bool
	default y

config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

config GENERIC_FIND_NEXT_BIT
	bool
	default y

config GENERIC_HWEIGHT
	bool
	default y

config GENERIC_CALIBRATE_DELAY
	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 EMULATED_CMPXCHG
	bool
	default y
	help
	  Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
	  is emulated, and therefore it is not completely atomic.

config SUN_PM
	bool
	default y
	help
	  Enable power management and CPU standby features on supported
	  SPARC platforms.

config SUN4
	bool "Support for SUN4 machines (disables SUN4[CDM] support)"
	depends on !SMP
	default n
	help
	  Say Y here if, and only if, your machine is a sun4. Note that
	  a kernel compiled with this option will run only on sun4.
	  (And the current version will probably work only on sun4/330.)

if !SUN4

config PCI
	bool "Support for PCI and PS/2 keyboard/mouse"
	help
	  CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
	  CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
	  All of these platforms are extremely obscure, so say N if unsure.

config PCI_SYSCALL
	def_bool PCI

source "drivers/pci/Kconfig"

endif

config NO_DMA
	def_bool !PCI

config SUN_OPENPROMFS
	tristate "Openprom tree appears in /proc/openprom"
	help
	  If you say Y, the OpenPROM device tree will be available as a
	  virtual file system, which you can mount to /proc/openprom by "mount
	  -t openpromfs none /proc/openprom".

	  To compile the /proc/openprom support as a module, choose M here: the
	  module will be called openpromfs.

	  Only choose N if you know in advance that you will not need to modify
	  OpenPROM settings on the running system.

config SPARC_LED
	tristate "Sun4m LED driver"
	help
	  This driver toggles the front-panel LED on sun4m systems
	  in a user-specifiable manner.  Its state can be probed
	  by reading /proc/led and its blinking mode can be changed
	  via writes to /proc/led

source "fs/Kconfig.binfmt"

source "mm/Kconfig"

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

if !SUN4
source "drivers/sbus/char/Kconfig"
endif

# This one must be before the filesystem configs. -DaveM

menu "Unix98 PTY support"

config UNIX98_PTYS
	bool "Unix98 PTY support"
	---help---
	  A pseudo terminal (PTY) is a software device consisting of two
	  halves: a master and a slave. The slave device behaves identical to
	  a physical terminal; the master device is used by a process to
	  read data from and write data to the slave, thereby emulating a
	  terminal. Typical programs for the master side are telnet servers
	  and xterms.

	  Linux has traditionally used the BSD-like names /dev/ptyxx for
	  masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
	  has a number of problems. The GNU C library glibc 2.1 and later,
	  however, supports the Unix98 naming standard: in order to acquire a
	  pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
	  terminal is then made available to the process and the pseudo
	  terminal slave can be accessed as /dev/pts/<number>. What was
	  traditionally /dev/ttyp2 will then be /dev/pts/2, for example.

	  The entries in /dev/pts/ are created on the fly by a virtual
	  file system; therefore, if you say Y here you should say Y to
	  "/dev/pts file system for Unix98 PTYs" as well.

	  If you want to say Y here, you need to have the C library glibc 2.1
	  or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
	  Read the instructions in <file:Documentation/Changes> pertaining to
	  pseudo terminals. It's safe to say N.

endmenu

source "fs/Kconfig"

source "arch/sparc/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"
Commit	Line	Data
1da177e4 LT	1	# For a description of the syntax of this configuration file,
	2	# see Documentation/kbuild/kconfig-language.txt.
	3	#
	4
	5	mainmenu "Linux/SPARC Kernel Configuration"
	6
	7	config MMU
	8	bool
	9	default y
	10
1da177e4 LT	11	config HIGHMEM
	12	bool
	13	default y
	14
5ac6da66 CL	15	config ZONE_DMA
	16	bool
	17	default y
	18
1da177e4 LT	19	config GENERIC_ISA_DMA
	20	bool
	21	default y
	22
0785b9dc SR	23	config ARCH_NO_VIRT_TO_BUS
	24	def_bool y
	25
97e873e5 SR	26	config OF
	27	def_bool y
	28
bdc80787 PA	29	config HZ
	30	int
	31	default 100
	32
1da177e4 LT	33	source "init/Kconfig"
	34
	35	menu "General machine setup"
	36
1da177e4 LT	37	config SMP
1da177e4 LT	38	bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
1da177e4 LT	39	---help---
	40	This enables support for systems with more than one CPU. If you have
	41	a system with only one CPU, say N. If you have a system with more
	42	than one CPU, say Y.
	43
	44	If you say N here, the kernel will run on single and multiprocessor
	45	machines, but will use only one CPU of a multiprocessor machine. If
	46	you say Y here, the kernel will run on many, but not all,
	47	singleprocessor machines. On a singleprocessor machine, the kernel
	48	will run faster if you say N here.
	49
	50	People using multiprocessor machines who say Y here should also say
	51	Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	52	Management" code will be disabled if you say Y here.
	53
03502faa AB	54	See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
03502faa AB	55	available at <http://www.tldp.org/docs.html#howto>.
1da177e4 LT	56
	57	If you don't know what to do here, say N.
	58
	59	config NR_CPUS
	60	int "Maximum number of CPUs (2-32)"
	61	range 2 32
	62	depends on SMP
	63	default "32"
	64
0b57ee9e AB	65	config SPARC
	66	bool
	67	default y
ec7748b5	68	select HAVE_IDE
42d4b839	69	select HAVE_OPROFILE
e2fdd7fd	70	select HAVE_ARCH_KGDB if !SMP
04d91cb8	71	select HAVE_ARCH_TRACEHOOK
0b57ee9e	72
1da177e4 LT	73	# Identify this as a Sparc32 build
	74	config SPARC32
	75	bool
	76	default y
	77	help
	78	SPARC is a family of RISC microprocessors designed and marketed by
	79	Sun Microsystems, incorporated. They are very widely found in Sun
	80	workstations and clones. This port covers the original 32-bit SPARC;
	81	it is old and stable and usually considered one of the "big three"
	82	along with the Intel and Alpha ports. The UltraLinux project
	83	maintains both the SPARC32 and SPARC64 ports; its web page is
	84	available at <http://www.ultralinux.org/>.
	85
	86	# Global things across all Sun machines.
	87	config ISA
	88	bool
	89	help
	90	ISA is found on Espresso only and is not supported currently.
	91	Say N
	92
	93	config EISA
	94	bool
	95	help
	96	EISA is not supported.
	97	Say N
	98
	99	config MCA
	100	bool
	101	help
	102	MCA is not supported.
	103	Say N
	104
	105	config PCMCIA
	106	tristate
	107	---help---
	108	Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
	109	computer. These are credit-card size devices such as network cards,
	110	modems or hard drives often used with laptops computers. There are
	111	actually two varieties of these cards: the older 16 bit PCMCIA cards
	112	and the newer 32 bit CardBus cards. If you want to use CardBus
	113	cards, you need to say Y here and also to "CardBus support" below.
	114
	115	To use your PC-cards, you will need supporting software from David
	116	Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
	117	for location). Please also read the PCMCIA-HOWTO, available from
	118	<http://www.tldp.org/docs.html#howto>.
	119
	120	To compile this driver as modules, choose M here: the
	121	modules will be called pcmcia_core and ds.
	122
	123	config SBUS
	124	bool
	125	default y
	126
	127	config SBUSCHAR
	128	bool
	129	default y
	130
	131	config SERIAL_CONSOLE
	132	bool
	133	default y
	134	---help---
	135	If you say Y here, it will be possible to use a serial port as the
	136	system console (the system console is the device which receives all
137	kernel messages and warnings and which allows logins in single user
138	mode). This could be useful if some terminal or printer is connected
139	to that serial port.
140
141	Even if you say Y here, the currently visible virtual console
142	(/dev/tty0) will still be used as the system console by default, but
143	you can alter that using a kernel command line option such as
144	"console=ttyS1". (Try "man bootparam" or see the documentation of
145	your boot loader (silo) about how to pass options to the kernel at
146	boot time.)
147
148	If you don't have a graphics card installed and you say Y here, the
149	kernel will automatically use the first serial line, /dev/ttyS0, as
150	system console.
151
152	If unsure, say N.
153
154	config SUN_AUXIO
155	bool
156	default y
157
158	config SUN_IO
159	bool
160	default y
161
162	config RWSEM_GENERIC_SPINLOCK
163	bool
164	default y
165
166	config RWSEM_XCHGADD_ALGORITHM
167	bool
168
d59288b7 AM	169	config GENERIC_FIND_NEXT_BIT
	170	bool
	171	default y
	172
	173	config GENERIC_HWEIGHT
	174	bool
	175	default y
	176
1da177e4 LT	177	config GENERIC_CALIBRATE_DELAY
	178	bool
	179	default y
	180
a08b6b79 AV	181	config ARCH_MAY_HAVE_PC_FDC
	182	bool
	183	default y
	184
f0d1b0b3 DH	185	config ARCH_HAS_ILOG2_U32
	186	bool
	187	default n
	188
	189	config ARCH_HAS_ILOG2_U64
	190	bool
	191	default n
	192
5f81941c MH	193	config EMULATED_CMPXCHG
	194	bool
	195	default y
	196	help
	197	Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
	198	is emulated, and therefore it is not completely atomic.
	199
1da177e4 LT	200	config SUN_PM
	201	bool
	202	default y
	203	help
	204	Enable power management and CPU standby features on supported
	205	SPARC platforms.
	206
	207	config SUN4
	208	bool "Support for SUN4 machines (disables SUN4[CDM] support)"
	209	depends on !SMP
	210	default n
	211	help
	212	Say Y here if, and only if, your machine is a sun4. Note that
	213	a kernel compiled with this option will run only on sun4.
	214	(And the current version will probably work only on sun4/330.)
	215
	216	if !SUN4
	217
	218	config PCI
	219	bool "Support for PCI and PS/2 keyboard/mouse"
	220	help
	221	CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
	222	CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
	223	All of these platforms are extremely obscure, so say N if unsure.
	224
36e23590 MW	225	config PCI_SYSCALL
	226	def_bool PCI
	227
1da177e4 LT	228	source "drivers/pci/Kconfig"
	229
	230	endif
	231
7155c9f5 AV	232	config NO_DMA
	233	def_bool !PCI
	234
1da177e4 LT	235	config SUN_OPENPROMFS
	236	tristate "Openprom tree appears in /proc/openprom"
	237	help
	238	If you say Y, the OpenPROM device tree will be available as a
	239	virtual file system, which you can mount to /proc/openprom by "mount
	240	-t openpromfs none /proc/openprom".
	241
	242	To compile the /proc/openprom support as a module, choose M here: the
	243	module will be called openpromfs.
	244
	245	Only choose N if you know in advance that you will not need to modify
	246	OpenPROM settings on the running system.
	247
ee1858d3 LK	248	config SPARC_LED
	249	tristate "Sun4m LED driver"
	250	help
	251	This driver toggles the front-panel LED on sun4m systems
3cb2fccc ML	252	in a user-specifiable manner. Its state can be probed
3cb2fccc ML	253	by reading /proc/led and its blinking mode can be changed
ee1858d3 LK	254	via writes to /proc/led
ee1858d3 LK	255
1da177e4 LT	256	source "fs/Kconfig.binfmt"
1da177e4 LT	257
30aaa808 WLII	258	source "mm/Kconfig"
	259
	260	endmenu
	261
d5950b43 SR	262	source "net/Kconfig"
d5950b43 SR	263
30aaa808	264	source "drivers/Kconfig"
1da177e4	265
1da177e4 LT	266	if !SUN4
	267	source "drivers/sbus/char/Kconfig"
	268	endif
	269
1da177e4 LT	270	# This one must be before the filesystem configs. -DaveM
	271
	272	menu "Unix98 PTY support"
	273
	274	config UNIX98_PTYS
	275	bool "Unix98 PTY support"
	276	---help---
	277	A pseudo terminal (PTY) is a software device consisting of two
	278	halves: a master and a slave. The slave device behaves identical to
	279	a physical terminal; the master device is used by a process to
	280	read data from and write data to the slave, thereby emulating a
	281	terminal. Typical programs for the master side are telnet servers
	282	and xterms.
	283
	284	Linux has traditionally used the BSD-like names /dev/ptyxx for
	285	masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
	286	has a number of problems. The GNU C library glibc 2.1 and later,
	287	however, supports the Unix98 naming standard: in order to acquire a
	288	pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
	289	terminal is then made available to the process and the pseudo
	290	terminal slave can be accessed as /dev/pts/<number>. What was
	291	traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
	292
	293	The entries in /dev/pts/ are created on the fly by a virtual
	294	file system; therefore, if you say Y here you should say Y to
	295	"/dev/pts file system for Unix98 PTYs" as well.
	296
	297	If you want to say Y here, you need to have the C library glibc 2.1
	298	or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
	299	Read the instructions in <file:Documentation/Changes> pertaining to
	300	pseudo terminals. It's safe to say N.
	301
1da177e4 LT	302	endmenu
1da177e4 LT	303
1da177e4 LT	304	source "fs/Kconfig"
1da177e4 LT	305
1da177e4 LT	306	source "arch/sparc/Kconfig.debug"
	307
	308	source "security/Kconfig"
	309
	310	source "crypto/Kconfig"
	311
	312	source "lib/Kconfig"