[deliverable/linux.git] / arch / powerpc / platforms / Kconfig.cputype

config PPC64
	bool "64-bit kernel"
	default n
	help
	  This option selects whether a 32-bit or a 64-bit kernel
	  will be built.

menu "Processor support"
choice
	prompt "Processor Type"
	depends on PPC32
	default 6xx
	help
	  There are five families of 32 bit PowerPC chips supported.
	  The most common ones are the desktop and server CPUs (601, 603,
	  604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
	  embedded 512x/52xx/82xx/83xx/86xx counterparts.
	  The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
	  (85xx) each form a family of their own that is not compatible
	  with the others.

	  If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.

config 6xx
	bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
	select PPC_FPU

config PPC_85xx
	bool "Freescale 85xx"
	select E500
	select FSL_SOC
	select MPC85xx

config PPC_8xx
	bool "Freescale 8xx"
	select FSL_SOC
	select 8xx
	select PPC_LIB_RHEAP

config 40x
	bool "AMCC 40x"
	select PPC_DCR_NATIVE
	select PPC_UDBG_16550
	select 4xx_SOC
	select PPC_PCI_CHOICE

config 44x
	bool "AMCC 44x"
	select PPC_DCR_NATIVE
	select PPC_UDBG_16550
	select 4xx_SOC
	select PPC_PCI_CHOICE
	select PHYS_64BIT

config E200
	bool "Freescale e200"

endchoice

# Until we have a choice of exclusive CPU types on 64-bit, we always
# use PPC_BOOK3S. On 32-bit, this is equivalent to 6xx which is
# "classic" MMU

config PPC_BOOK3S
       def_bool y
       depends on PPC64 || 6xx

config POWER4_ONLY
	bool "Optimize for POWER4"
	depends on PPC64 && PPC_BOOK3S
	default n
	---help---
	  Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
	  The resulting binary will not work on POWER3 or RS64 processors
	  when compiled with binutils 2.15 or later.

config POWER3
	bool
	depends on PPC64 && PPC_BOOK3S
	default y if !POWER4_ONLY

config POWER4
	depends on PPC64 && PPC_BOOK3S
	def_bool y

config TUNE_CELL
	bool "Optimize for Cell Broadband Engine"
	depends on PPC64 && PPC_BOOK3S
	help
	  Cause the compiler to optimize for the PPE of the Cell Broadband
	  Engine. This will make the code run considerably faster on Cell
	  but somewhat slower on other machines. This option only changes
	  the scheduling of instructions, not the selection of instructions
	  itself, so the resulting kernel will keep running on all other
	  machines. When building a kernel that is supposed to run only
	  on Cell, you should also select the POWER4_ONLY option.

# this is temp to handle compat with arch=ppc
config 8xx
	bool

config E500
	select FSL_EMB_PERFMON
	bool

config PPC_E500MC
	bool "e500mc Support"
	select PPC_FPU
	depends on E500

config PPC_FPU
	bool
	default y if PPC64

config 4xx
	bool
	depends on 40x || 44x
	default y

config BOOKE
	bool
	depends on E200 || E500 || 44x
	default y

config FSL_BOOKE
	bool
	depends on E200 || E500
	default y

config FSL_EMB_PERFMON
	bool "Freescale Embedded Perfmon"
	depends on E500 || PPC_83xx
	help
	  This is the Performance Monitor support found on the e500 core
	  and some e300 cores (c3 and c4).  Select this only if your
	  core supports the Embedded Performance Monitor APU

config PTE_64BIT
	bool
	depends on 44x || E500 || PPC_86xx
	default y if PHYS_64BIT

config PHYS_64BIT
	bool 'Large physical address support' if E500 || PPC_86xx
	depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
	---help---
	  This option enables kernel support for larger than 32-bit physical
	  addresses.  This feature may not be available on all cores.

	  If you have more than 3.5GB of RAM or so, you also need to enable
	  SWIOTLB under Kernel Options for this to work.  The actual number
	  is platform-dependent.

	  If in doubt, say N here.

config ALTIVEC
	bool "AltiVec Support"
	depends on 6xx || POWER4
	---help---
	  This option enables kernel support for the Altivec extensions to the
	  PowerPC processor. The kernel currently supports saving and restoring
	  altivec registers, and turning on the 'altivec enable' bit so user
	  processes can execute altivec instructions.

	  This option is only usefully if you have a processor that supports
	  altivec (G4, otherwise known as 74xx series), but does not have
	  any affect on a non-altivec cpu (it does, however add code to the
	  kernel).

	  If in doubt, say Y here.

config VSX
	bool "VSX Support"
	depends on POWER4 && ALTIVEC && PPC_FPU
	---help---

	  This option enables kernel support for the Vector Scaler extensions
	  to the PowerPC processor. The kernel currently supports saving and
	  restoring VSX registers, and turning on the 'VSX enable' bit so user
	  processes can execute VSX instructions.

	  This option is only useful if you have a processor that supports
	  VSX (P7 and above), but does not have any affect on a non-VSX
	  CPUs (it does, however add code to the kernel).

	  If in doubt, say Y here.

config SPE
	bool "SPE Support"
	depends on E200 || (E500 && !PPC_E500MC)
	default y
	---help---
	  This option enables kernel support for the Signal Processing
	  Extensions (SPE) to the PowerPC processor. The kernel currently
	  supports saving and restoring SPE registers, and turning on the
	  'spe enable' bit so user processes can execute SPE instructions.

	  This option is only useful if you have a processor that supports
	  SPE (e500, otherwise known as 85xx series), but does not have any
	  effect on a non-spe cpu (it does, however add code to the kernel).

	  If in doubt, say Y here.

config PPC_STD_MMU
	bool
	depends on 6xx || PPC64
	default y

config PPC_STD_MMU_32
	def_bool y
	depends on PPC_STD_MMU && PPC32

config PPC_STD_MMU_64
	def_bool y
	depends on PPC_STD_MMU && PPC64

config PPC_MMU_NOHASH
	def_bool y
	depends on !PPC_STD_MMU

config PPC_BOOK3E_MMU
	def_bool y
	depends on FSL_BOOKE

config PPC_MM_SLICES
	bool
	default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
	default n

config VIRT_CPU_ACCOUNTING
	bool "Deterministic task and CPU time accounting"
	depends on PPC64
	default y
	help
	  Select this option to enable more accurate task and CPU time
	  accounting.  This is done by reading a CPU counter on each
	  kernel entry and exit and on transitions within the kernel
	  between system, softirq and hardirq state, so there is a
	  small performance impact.  This also enables accounting of
	  stolen time on logically-partitioned systems running on
	  IBM POWER5-based machines.

	  If in doubt, say Y here.

config SMP
	depends on PPC_STD_MMU || FSL_BOOKE
	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.  Note that the kernel does not currently
	  support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
	  since they have inadequate hardware support for multiprocessor
	  operation.

	  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 "32" if PPC64
	default "4"

config NOT_COHERENT_CACHE
	bool
	depends on 4xx || 8xx || E200 || PPC_MPC512x
	default y

config CHECK_CACHE_COHERENCY
	bool

endmenu
Commit	Line	Data
a0ae9c7c AB	1	config PPC64
	2	bool "64-bit kernel"
	3	default n
	4	help
	5	This option selects whether a 32-bit or a 64-bit kernel
	6	will be built.
	7
	8	menu "Processor support"
	9	choice
	10	prompt "Processor Type"
	11	depends on PPC32
	12	default 6xx
a0ae9c7c	13	help
b9fd305d AB	14	There are five families of 32 bit PowerPC chips supported.
	15	The most common ones are the desktop and server CPUs (601, 603,
	16	604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
e177edcd	17	embedded 512x/52xx/82xx/83xx/86xx counterparts.
b9fd305d AB	18	The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
	19	(85xx) each form a family of their own that is not compatible
	20	with the others.
	21
	22	If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
	23
	24	config 6xx
e177edcd	25	bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
a0ae9c7c AB	26	select PPC_FPU
a0ae9c7c AB	27
a0ae9c7c AB	28	config PPC_85xx
	29	bool "Freescale 85xx"
	30	select E500
	31	select FSL_SOC
3a83156b	32	select MPC85xx
a0ae9c7c	33
a0ae9c7c AB	34	config PPC_8xx
	35	bool "Freescale 8xx"
	36	select FSL_SOC
	37	select 8xx
1088a209	38	select PPC_LIB_RHEAP
a0ae9c7c AB	39
	40	config 40x
	41	bool "AMCC 40x"
	42	select PPC_DCR_NATIVE
9dae8afd	43	select PPC_UDBG_16550
93173ce2	44	select 4xx_SOC
b500563b	45	select PPC_PCI_CHOICE
a0ae9c7c AB	46
	47	config 44x
	48	bool "AMCC 44x"
	49	select PPC_DCR_NATIVE
1d5499b5	50	select PPC_UDBG_16550
93173ce2	51	select 4xx_SOC
b500563b	52	select PPC_PCI_CHOICE
4ee7084e	53	select PHYS_64BIT
a0ae9c7c AB	54
	55	config E200
	56	bool "Freescale e200"
	57
	58	endchoice
	59
28794d34 BH	60	# Until we have a choice of exclusive CPU types on 64-bit, we always
	61	# use PPC_BOOK3S. On 32-bit, this is equivalent to 6xx which is
	62	# "classic" MMU
	63
	64	config PPC_BOOK3S
	65	def_bool y
	66	depends on PPC64 \|\| 6xx
	67
a0ae9c7c AB	68	config POWER4_ONLY
a0ae9c7c AB	69	bool "Optimize for POWER4"
28794d34	70	depends on PPC64 && PPC_BOOK3S
a0ae9c7c AB	71	default n
	72	---help---
	73	Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
	74	The resulting binary will not work on POWER3 or RS64 processors
	75	when compiled with binutils 2.15 or later.
	76
	77	config POWER3
	78	bool
28794d34	79	depends on PPC64 && PPC_BOOK3S
a0ae9c7c AB	80	default y if !POWER4_ONLY
	81
	82	config POWER4
28794d34	83	depends on PPC64 && PPC_BOOK3S
a0ae9c7c AB	84	def_bool y
a0ae9c7c AB	85
3164cccd AB	86	config TUNE_CELL
3164cccd AB	87	bool "Optimize for Cell Broadband Engine"
28794d34	88	depends on PPC64 && PPC_BOOK3S
3164cccd AB	89	help
	90	Cause the compiler to optimize for the PPE of the Cell Broadband
	91	Engine. This will make the code run considerably faster on Cell
	92	but somewhat slower on other machines. This option only changes
	93	the scheduling of instructions, not the selection of instructions
	94	itself, so the resulting kernel will keep running on all other
	95	machines. When building a kernel that is supposed to run only
	96	on Cell, you should also select the POWER4_ONLY option.
	97
a0ae9c7c AB	98	# this is temp to handle compat with arch=ppc
	99	config 8xx
	100	bool
	101
a0ae9c7c	102	config E500
39aef685	103	select FSL_EMB_PERFMON
a0ae9c7c AB	104	bool
a0ae9c7c AB	105
3dfa8773 KG	106	config PPC_E500MC
	107	bool "e500mc Support"
	108	select PPC_FPU
	109	depends on E500
	110
a0ae9c7c AB	111	config PPC_FPU
	112	bool
	113	default y if PPC64
	114
	115	config 4xx
	116	bool
	117	depends on 40x \|\| 44x
	118	default y
	119
	120	config BOOKE
	121	bool
	122	depends on E200 \|\| E500 \|\| 44x
	123	default y
	124
	125	config FSL_BOOKE
	126	bool
	127	depends on E200 \|\| E500
	128	default y
	129
39aef685	130	config FSL_EMB_PERFMON
ad562c71 AF	131	bool "Freescale Embedded Perfmon"
	132	depends on E500 \|\| PPC_83xx
	133	help
	134	This is the Performance Monitor support found on the e500 core
	135	and some e300 cores (c3 and c4). Select this only if your
	136	core supports the Embedded Performance Monitor APU
39aef685	137
a0ae9c7c AB	138	config PTE_64BIT
a0ae9c7c AB	139	bool
4ee7084e BB	140	depends on 44x \|\| E500 \|\| PPC_86xx
4ee7084e BB	141	default y if PHYS_64BIT
a0ae9c7c AB	142
a0ae9c7c AB	143	config PHYS_64BIT
4ee7084e BB	144	bool 'Large physical address support' if E500 \|\| PPC_86xx
4ee7084e BB	145	depends on (44x \|\| E500 \|\| PPC_86xx) && !PPC_83xx && !PPC_82xx
a0ae9c7c AB	146	---help---
a0ae9c7c AB	147	This option enables kernel support for larger than 32-bit physical
4ee7084e BB	148	addresses. This feature may not be available on all cores.
	149
	150	If you have more than 3.5GB of RAM or so, you also need to enable
	151	SWIOTLB under Kernel Options for this to work. The actual number
	152	is platform-dependent.
a0ae9c7c AB	153
	154	If in doubt, say N here.
	155
	156	config ALTIVEC
	157	bool "AltiVec Support"
28794d34	158	depends on 6xx \|\| POWER4
a0ae9c7c AB	159	---help---
	160	This option enables kernel support for the Altivec extensions to the
	161	PowerPC processor. The kernel currently supports saving and restoring
	162	altivec registers, and turning on the 'altivec enable' bit so user
	163	processes can execute altivec instructions.
	164
	165	This option is only usefully if you have a processor that supports
	166	altivec (G4, otherwise known as 74xx series), but does not have
	167	any affect on a non-altivec cpu (it does, however add code to the
	168	kernel).
	169
	170	If in doubt, say Y here.
	171
96d5b52c MN	172	config VSX
	173	bool "VSX Support"
	174	depends on POWER4 && ALTIVEC && PPC_FPU
	175	---help---
	176
	177	This option enables kernel support for the Vector Scaler extensions
	178	to the PowerPC processor. The kernel currently supports saving and
	179	restoring VSX registers, and turning on the 'VSX enable' bit so user
	180	processes can execute VSX instructions.
	181
	182	This option is only useful if you have a processor that supports
	183	VSX (P7 and above), but does not have any affect on a non-VSX
	184	CPUs (it does, however add code to the kernel).
	185
	186	If in doubt, say Y here.
	187
a0ae9c7c AB	188	config SPE
a0ae9c7c AB	189	bool "SPE Support"
3dfa8773	190	depends on E200 \|\| (E500 && !PPC_E500MC)
a0ae9c7c AB	191	default y
	192	---help---
	193	This option enables kernel support for the Signal Processing
	194	Extensions (SPE) to the PowerPC processor. The kernel currently
	195	supports saving and restoring SPE registers, and turning on the
	196	'spe enable' bit so user processes can execute SPE instructions.
	197
	198	This option is only useful if you have a processor that supports
	199	SPE (e500, otherwise known as 85xx series), but does not have any
	200	effect on a non-spe cpu (it does, however add code to the kernel).
	201
	202	If in doubt, say Y here.
	203
	204	config PPC_STD_MMU
	205	bool
5e696617	206	depends on 6xx \|\| PPC64
a0ae9c7c AB	207	default y
	208
	209	config PPC_STD_MMU_32
	210	def_bool y
	211	depends on PPC_STD_MMU && PPC32
	212
5e696617 BH	213	config PPC_STD_MMU_64
	214	def_bool y
	215	depends on PPC_STD_MMU && PPC64
	216
	217	config PPC_MMU_NOHASH
	218	def_bool y
	219	depends on !PPC_STD_MMU
	220
70fe3af8 KG	221	config PPC_BOOK3E_MMU
	222	def_bool y
	223	depends on FSL_BOOKE
	224
a0ae9c7c AB	225	config PPC_MM_SLICES
a0ae9c7c AB	226	bool
ca9153a3	227	default y if HUGETLB_PAGE \|\| (PPC_STD_MMU_64 && PPC_64K_PAGES)
a0ae9c7c AB	228	default n
	229
	230	config VIRT_CPU_ACCOUNTING
	231	bool "Deterministic task and CPU time accounting"
	232	depends on PPC64
	233	default y
	234	help
	235	Select this option to enable more accurate task and CPU time
	236	accounting. This is done by reading a CPU counter on each
	237	kernel entry and exit and on transitions within the kernel
	238	between system, softirq and hardirq state, so there is a
	239	small performance impact. This also enables accounting of
	240	stolen time on logically-partitioned systems running on
	241	IBM POWER5-based machines.
	242
	243	If in doubt, say Y here.
	244
	245	config SMP
00c4b95c	246	depends on PPC_STD_MMU \|\| FSL_BOOKE
a0ae9c7c AB	247	bool "Symmetric multi-processing support"
	248	---help---
	249	This enables support for systems with more than one CPU. If you have
	250	a system with only one CPU, say N. If you have a system with more
	251	than one CPU, say Y. Note that the kernel does not currently
	252	support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
	253	since they have inadequate hardware support for multiprocessor
	254	operation.
	255
	256	If you say N here, the kernel will run on single and multiprocessor
	257	machines, but will use only one CPU of a multiprocessor machine. If
	258	you say Y here, the kernel will run on single-processor machines.
	259	On a single-processor machine, the kernel will run faster if you say
	260	N here.
	261
	262	If you don't know what to do here, say N.
	263
	264	config NR_CPUS
90035fe3 TB	265	int "Maximum number of CPUs (2-1024)"
90035fe3 TB	266	range 2 1024
a0ae9c7c AB	267	depends on SMP
	268	default "32" if PPC64
	269	default "4"
	270
	271	config NOT_COHERENT_CACHE
	272	bool
e177edcd	273	depends on 4xx \|\| 8xx \|\| E200 \|\| PPC_MPC512x
a0ae9c7c AB	274	default y
a0ae9c7c AB	275
f8eb77d6	276	config CHECK_CACHE_COHERENCY
a0ae9c7c AB	277	bool
	278
	279	endmenu