[mirror_ubuntu-zesty-kernel.git] / arch / frv / Kconfig

#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
config FRV
	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_CALIBRATE_DELAY
	bool
	default n

config GENERIC_HARDIRQS
	bool
	default n

mainmenu "Fujitsu FR-V Kernel Configuration"

source "init/Kconfig"


menu "Fujitsu FR-V system setup"

config MMU
	bool "MMU support"
	help
	  This options switches on and off support for the FR-V MMU
	  (effectively switching between vmlinux and uClinux). Not all FR-V
	  CPUs support this. Currently only the FR451 has a sufficiently
	  featured MMU.

config FRV_OUTOFLINE_ATOMIC_OPS
	bool "Out-of-line the FRV atomic operations"
	default n
	help
	  Setting this option causes the FR-V atomic operations to be mostly
	  implemented out-of-line.

	  See Documentation/fujitsu/frv/atomic-ops.txt for more information.

config HIGHMEM
	bool "High memory support"
	depends on MMU
	default y
	help
	  If you wish to use more than 256MB of memory with your MMU based
	  system, you will need to select this option. The kernel can only see
	  the memory between 0xC0000000 and 0xD0000000 directly... everything
	  else must be kmapped.

	  The arch is, however, capable of supporting up to 3GB of SDRAM.

config HIGHPTE
	bool "Allocate page tables in highmem"
	depends on HIGHMEM
	default y
	help
	  The VM uses one page of memory for each page table.  For systems
	  with a lot of RAM, this can be wasteful of precious low memory.
	  Setting this option will put user-space page tables in high memory.

source "mm/Kconfig"

choice
	prompt "uClinux kernel load address"
	depends on !MMU
	default UCPAGE_OFFSET_C0000000
	help
	  This option sets the base address for the uClinux kernel. The kernel
	  will rearrange the SDRAM layout to start at this address, and move
	  itself to start there. It must be greater than 0, and it must be
	  sufficiently less than 0xE0000000 that the SDRAM does not intersect
	  the I/O region.

	  The base address must also be aligned such that the SDRAM controller
	  can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.

config UCPAGE_OFFSET_20000000
       bool "0x20000000"

config UCPAGE_OFFSET_40000000
       bool "0x40000000"

config UCPAGE_OFFSET_60000000
       bool "0x60000000"

config UCPAGE_OFFSET_80000000
       bool "0x80000000"

config UCPAGE_OFFSET_A0000000
       bool "0xA0000000"

config UCPAGE_OFFSET_C0000000
       bool "0xC0000000 (Recommended)"

endchoice

config PROTECT_KERNEL
	bool "Protect core kernel against userspace"
	depends on !MMU
	default y
	help
	  Selecting this option causes the uClinux kernel to change the
	  permittivity of DAMPR register covering the core kernel image to
	  prevent userspace accessing the underlying memory directly.

choice
	prompt "CPU Caching mode"
	default FRV_DEFL_CACHE_WBACK
	help
	  This option determines the default caching mode for the kernel.

	  Write-Back caching mode involves the all reads and writes causing
	  the affected cacheline to be read into the cache first before being
	  operated upon. Memory is not then updated by a write until the cache
	  is filled and a cacheline needs to be displaced from the cache to
	  make room. Only at that point is it written back.

	  Write-Behind caching is similar to Write-Back caching, except that a
	  write won't fetch a cacheline into the cache if there isn't already
	  one there; it will write directly to memory instead.

	  Write-Through caching only fetches cachelines from memory on a
	  read. Writes always get written directly to memory. If the affected
	  cacheline is also in cache, it will be updated too.

	  The final option is to turn of caching entirely.

	  Note that not all CPUs support Write-Behind caching. If the CPU on
	  which the kernel is running doesn't, it'll fall back to Write-Back
	  caching.

config FRV_DEFL_CACHE_WBACK
	bool "Write-Back"

config FRV_DEFL_CACHE_WBEHIND
	bool "Write-Behind"

config FRV_DEFL_CACHE_WTHRU
	bool "Write-Through"

config FRV_DEFL_CACHE_DISABLED
	bool "Disabled"

endchoice

menu "CPU core support"

config CPU_FR401
	bool "Include FR401 core support"
	depends on !MMU
	default y
	help
	  This enables support for the FR401, FR401A and FR403 CPUs

config CPU_FR405
	bool "Include FR405 core support"
	depends on !MMU
	default y
	help
	  This enables support for the FR405 CPU

config CPU_FR451
	bool "Include FR451 core support"
	default y
	help
	  This enables support for the FR451 CPU

config CPU_FR451_COMPILE
	bool "Specifically compile for FR451 core"
	depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
	default y
	help
	  This causes appropriate flags to be passed to the compiler to
	  optimise for the FR451 CPU

config CPU_FR551
	bool "Include FR551 core support"
	depends on !MMU
	default y
	help
	  This enables support for the FR555 CPU

config CPU_FR551_COMPILE
	bool "Specifically compile for FR551 core"
	depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
	default y
	help
	  This causes appropriate flags to be passed to the compiler to
	  optimise for the FR555 CPU

config FRV_L1_CACHE_SHIFT
	int
	default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
	default "6" if CPU_FR551

endmenu

choice
	prompt "System support"
	default MB93091_VDK

config MB93091_VDK
	bool "MB93091 CPU board with or without motherboard"

config MB93093_PDK
	bool "MB93093 PDK unit"

endchoice

if MB93091_VDK
choice
	prompt "Motherboard support"
	default MB93090_MB00

config MB93090_MB00
	bool "Use the MB93090-MB00 motherboard"
	help
	  Select this option if the MB93091 CPU board is going to be used with
	  a MB93090-MB00 VDK motherboard

config MB93091_NO_MB
	bool "Use standalone"
	help
	  Select this option if the MB93091 CPU board is going to be used
	  without a motherboard

endchoice
endif

choice
	prompt "GP-Relative data support"
	default GPREL_DATA_8
	help
	  This option controls what data, if any, should be placed in the GP
	  relative data sections. Using this means that the compiler can
	  generate accesses to the data using GR16-relative addressing which
	  is faster than absolute instructions and saves space (2 instructions
	  per access).

	  However, the GPREL region is limited in size because the immediate
	  value used in the load and store instructions is limited to a 12-bit
	  signed number.

	  So if the linker starts complaining that accesses to GPREL data are
	  out of range, try changing this option from the default.

	  Note that modules will always be compiled with this feature disabled
	  as the module data will not be in range of the GP base address.

config GPREL_DATA_8
	bool "Put data objects of up to 8 bytes into GP-REL"

config GPREL_DATA_4
	bool "Put data objects of up to 4 bytes into GP-REL"

config GPREL_DATA_NONE
	bool "Don't use GP-REL"

endchoice

config FRV_ONCPU_SERIAL
	bool "Use on-CPU serial ports"
	select SERIAL_8250
	default y

config PCI
	bool "Use PCI"
	depends on MB93090_MB00
	default y
	help
	  Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
	  onboard. If you have one of these boards and you wish to use the PCI
	  facilities, say Y here.

	  The PCI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>, contains valuable
	  information about which PCI hardware does work under Linux and which
	  doesn't.

config RESERVE_DMA_COHERENT
	bool "Reserve DMA coherent memory"
	depends on PCI && !MMU
	default y
	help
	  Many PCI drivers require access to uncached memory for DMA device
	  communications (such as is done with some Ethernet buffer rings). If
	  a fully featured MMU is available, this can be done through page
	  table settings, but if not, a region has to be set aside and marked
	  with a special DAMPR register.

	  Setting this option causes uClinux to set aside a portion of the
	  available memory for use in this manner. The memory will then be
	  unavailable for normal kernel use.

source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

#config MATH_EMULATION
#	bool "Math emulation support (EXPERIMENTAL)"
#	depends on EXPERIMENTAL
#	help
#	  At some point in the future, this will cause floating-point math
#	  instructions to be emulated by the kernel on machines that lack a
#	  floating-point math coprocessor.  Thrill-seekers and chronically
#	  sleep-deprived psychotic hacker types can say Y now, everyone else
#	  should probably wait a while.

menu "Power management options"
source kernel/power/Kconfig
endmenu

endmenu


menu "Executable formats"

source "fs/Kconfig.binfmt"

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "arch/frv/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"
Commit	Line	Data
1da177e4 LT	1	#
	2	# For a description of the syntax of this configuration file,
	3	# see Documentation/kbuild/kconfig-language.txt.
	4	#
	5	config FRV
	6	bool
	7	default y
	8
1da177e4 LT	9	config RWSEM_GENERIC_SPINLOCK
	10	bool
	11	default y
	12
	13	config RWSEM_XCHGADD_ALGORITHM
	14	bool
	15
	16	config GENERIC_FIND_NEXT_BIT
	17	bool
	18	default y
	19
	20	config GENERIC_CALIBRATE_DELAY
	21	bool
	22	default n
	23
	24	config GENERIC_HARDIRQS
	25	bool
	26	default n
	27
	28	mainmenu "Fujitsu FR-V Kernel Configuration"
	29
	30	source "init/Kconfig"
	31
	32
	33	menu "Fujitsu FR-V system setup"
	34
	35	config MMU
	36	bool "MMU support"
	37	help
	38	This options switches on and off support for the FR-V MMU
	39	(effectively switching between vmlinux and uClinux). Not all FR-V
	40	CPUs support this. Currently only the FR451 has a sufficiently
	41	featured MMU.
	42
	43	config FRV_OUTOFLINE_ATOMIC_OPS
	44	bool "Out-of-line the FRV atomic operations"
	45	default n
	46	help
	47	Setting this option causes the FR-V atomic operations to be mostly
	48	implemented out-of-line.
	49
	50	See Documentation/fujitsu/frv/atomic-ops.txt for more information.
	51
	52	config HIGHMEM
	53	bool "High memory support"
	54	depends on MMU
	55	default y
	56	help
	57	If you wish to use more than 256MB of memory with your MMU based
	58	system, you will need to select this option. The kernel can only see
	59	the memory between 0xC0000000 and 0xD0000000 directly... everything
	60	else must be kmapped.
	61
	62	The arch is, however, capable of supporting up to 3GB of SDRAM.
	63
	64	config HIGHPTE
	65	bool "Allocate page tables in highmem"
	66	depends on HIGHMEM
	67	default y
	68	help
	69	The VM uses one page of memory for each page table. For systems
	70	with a lot of RAM, this can be wasteful of precious low memory.
	71	Setting this option will put user-space page tables in high memory.
	72
3f22ab27 DH	73	source "mm/Kconfig"
3f22ab27 DH	74
1da177e4 LT	75	choice
	76	prompt "uClinux kernel load address"
	77	depends on !MMU
	78	default UCPAGE_OFFSET_C0000000
	79	help
	80	This option sets the base address for the uClinux kernel. The kernel
	81	will rearrange the SDRAM layout to start at this address, and move
	82	itself to start there. It must be greater than 0, and it must be
	83	sufficiently less than 0xE0000000 that the SDRAM does not intersect
	84	the I/O region.
	85
	86	The base address must also be aligned such that the SDRAM controller
	87	can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
	88
	89	config UCPAGE_OFFSET_20000000
	90	bool "0x20000000"
	91
	92	config UCPAGE_OFFSET_40000000
	93	bool "0x40000000"
	94
	95	config UCPAGE_OFFSET_60000000
	96	bool "0x60000000"
	97
	98	config UCPAGE_OFFSET_80000000
	99	bool "0x80000000"
	100
	101	config UCPAGE_OFFSET_A0000000
	102	bool "0xA0000000"
	103
	104	config UCPAGE_OFFSET_C0000000
	105	bool "0xC0000000 (Recommended)"
	106
	107	endchoice
	108
	109	config PROTECT_KERNEL
	110	bool "Protect core kernel against userspace"
	111	depends on !MMU
	112	default y
	113	help
	114	Selecting this option causes the uClinux kernel to change the
	115	permittivity of DAMPR register covering the core kernel image to
	116	prevent userspace accessing the underlying memory directly.
	117
	118	choice
	119	prompt "CPU Caching mode"
	120	default FRV_DEFL_CACHE_WBACK
	121	help
	122	This option determines the default caching mode for the kernel.
	123
	124	Write-Back caching mode involves the all reads and writes causing
	125	the affected cacheline to be read into the cache first before being
	126	operated upon. Memory is not then updated by a write until the cache
	127	is filled and a cacheline needs to be displaced from the cache to
	128	make room. Only at that point is it written back.
	129
	130	Write-Behind caching is similar to Write-Back caching, except that a
	131	write won't fetch a cacheline into the cache if there isn't already
	132	one there; it will write directly to memory instead.
	133
	134	Write-Through caching only fetches cachelines from memory on a
	135	read. Writes always get written directly to memory. If the affected
	136	cacheline is also in cache, it will be updated too.
	137
	138	The final option is to turn of caching entirely.
139
140	Note that not all CPUs support Write-Behind caching. If the CPU on
141	which the kernel is running doesn't, it'll fall back to Write-Back
142	caching.
143
144	config FRV_DEFL_CACHE_WBACK
145	bool "Write-Back"
146
147	config FRV_DEFL_CACHE_WBEHIND
148	bool "Write-Behind"
149
150	config FRV_DEFL_CACHE_WTHRU
151	bool "Write-Through"
152
153	config FRV_DEFL_CACHE_DISABLED
154	bool "Disabled"
155
156	endchoice
157
158	menu "CPU core support"
159
160	config CPU_FR401
161	bool "Include FR401 core support"
162	depends on !MMU
163	default y
164	help
165	This enables support for the FR401, FR401A and FR403 CPUs
166
167	config CPU_FR405
168	bool "Include FR405 core support"
169	depends on !MMU
170	default y
171	help
172	This enables support for the FR405 CPU
173
174	config CPU_FR451
175	bool "Include FR451 core support"
176	default y
177	help
178	This enables support for the FR451 CPU
179
180	config CPU_FR451_COMPILE
181	bool "Specifically compile for FR451 core"
182	depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
183	default y
184	help
185	This causes appropriate flags to be passed to the compiler to
186	optimise for the FR451 CPU
187
188	config CPU_FR551
189	bool "Include FR551 core support"
190	depends on !MMU
191	default y
192	help
193	This enables support for the FR555 CPU
194
195	config CPU_FR551_COMPILE
196	bool "Specifically compile for FR551 core"
197	depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
198	default y
199	help
200	This causes appropriate flags to be passed to the compiler to
201	optimise for the FR555 CPU
202
203	config FRV_L1_CACHE_SHIFT
204	int
205	default "5" if CPU_FR401 \|\| CPU_FR405 \|\| CPU_FR451
206	default "6" if CPU_FR551
207
208	endmenu
209
210	choice
211	prompt "System support"
212	default MB93091_VDK
213
214	config MB93091_VDK
215	bool "MB93091 CPU board with or without motherboard"
216
217	config MB93093_PDK
218	bool "MB93093 PDK unit"
219
220	endchoice
221
222	if MB93091_VDK
223	choice
224	prompt "Motherboard support"
225	default MB93090_MB00
226
227	config MB93090_MB00
228	bool "Use the MB93090-MB00 motherboard"
229	help
230	Select this option if the MB93091 CPU board is going to be used with
231	a MB93090-MB00 VDK motherboard
232
233	config MB93091_NO_MB
234	bool "Use standalone"
235	help
236	Select this option if the MB93091 CPU board is going to be used
237	without a motherboard
238
239	endchoice
240	endif
241
242	choice
243	prompt "GP-Relative data support"
244	default GPREL_DATA_8
245	help
246	This option controls what data, if any, should be placed in the GP
247	relative data sections. Using this means that the compiler can
248	generate accesses to the data using GR16-relative addressing which
249	is faster than absolute instructions and saves space (2 instructions
250	per access).
251
252	However, the GPREL region is limited in size because the immediate
253	value used in the load and store instructions is limited to a 12-bit
254	signed number.
255
256	So if the linker starts complaining that accesses to GPREL data are
257	out of range, try changing this option from the default.
258
259	Note that modules will always be compiled with this feature disabled
260	as the module data will not be in range of the GP base address.
261
262	config GPREL_DATA_8
263	bool "Put data objects of up to 8 bytes into GP-REL"
264
265	config GPREL_DATA_4
266	bool "Put data objects of up to 4 bytes into GP-REL"
267
268	config GPREL_DATA_NONE
269	bool "Don't use GP-REL"
270
271	endchoice
272
f8aec757 DH	273	config FRV_ONCPU_SERIAL
	274	bool "Use on-CPU serial ports"
	275	select SERIAL_8250
	276	default y
	277
1da177e4 LT	278	config PCI
	279	bool "Use PCI"
	280	depends on MB93090_MB00
	281	default y
	282	help
	283	Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
	284	onboard. If you have one of these boards and you wish to use the PCI
	285	facilities, say Y here.
	286
	287	The PCI-HOWTO, available from
	288	<http://www.tldp.org/docs.html#howto>, contains valuable
	289	information about which PCI hardware does work under Linux and which
	290	doesn't.
	291
	292	config RESERVE_DMA_COHERENT
	293	bool "Reserve DMA coherent memory"
	294	depends on PCI && !MMU
	295	default y
	296	help
	297	Many PCI drivers require access to uncached memory for DMA device
	298	communications (such as is done with some Ethernet buffer rings). If
	299	a fully featured MMU is available, this can be done through page
	300	table settings, but if not, a region has to be set aside and marked
	301	with a special DAMPR register.
	302
	303	Setting this option causes uClinux to set aside a portion of the
	304	available memory for use in this manner. The memory will then be
	305	unavailable for normal kernel use.
	306
	307	source "drivers/pci/Kconfig"
	308
7a758313	309	source "drivers/pcmcia/Kconfig"
1da177e4 LT	310
	311	#config MATH_EMULATION
	312	# bool "Math emulation support (EXPERIMENTAL)"
	313	# depends on EXPERIMENTAL
	314	# help
	315	# At some point in the future, this will cause floating-point math
	316	# instructions to be emulated by the kernel on machines that lack a
	317	# floating-point math coprocessor. Thrill-seekers and chronically
	318	# sleep-deprived psychotic hacker types can say Y now, everyone else
	319	# should probably wait a while.
	320
	321	menu "Power management options"
	322	source kernel/power/Kconfig
	323	endmenu
	324
	325	endmenu
	326
	327
	328	menu "Executable formats"
	329
	330	source "fs/Kconfig.binfmt"
	331
	332	endmenu
	333
d5950b43 SR	334	source "net/Kconfig"
d5950b43 SR	335
1da177e4 LT	336	source "drivers/Kconfig"
	337
	338	source "fs/Kconfig"
	339
	340	source "arch/frv/Kconfig.debug"
	341
	342	source "security/Kconfig"
	343
	344	source "crypto/Kconfig"
	345
	346	source "lib/Kconfig"