[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
	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 PPC_BOOK3S
	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

config PPC_BOOK3S
	default y
	depends on PPC64
	select PPC_FPU


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 6xx
	def_bool y
	depends on PPC32 && PPC_BOOK3S

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
	def_bool y
	depends on PPC_BOOK3S

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 (2-8192)"
	range 2 8192
	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
a0ae9c7c	12	help
b9fd305d AB	13	There are five families of 32 bit PowerPC chips supported.
	14	The most common ones are the desktop and server CPUs (601, 603,
	15	604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
e177edcd	16	embedded 512x/52xx/82xx/83xx/86xx counterparts.
b9fd305d AB	17	The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
	18	(85xx) each form a family of their own that is not compatible
	19	with the others.
	20
	21	If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
	22
5b7c3c91	23	config PPC_BOOK3S
e177edcd	24	bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
a0ae9c7c AB	25	select PPC_FPU
a0ae9c7c AB	26
a0ae9c7c AB	27	config PPC_85xx
	28	bool "Freescale 85xx"
	29	select E500
	30	select FSL_SOC
3a83156b	31	select MPC85xx
a0ae9c7c	32
a0ae9c7c AB	33	config PPC_8xx
	34	bool "Freescale 8xx"
	35	select FSL_SOC
	36	select 8xx
1088a209	37	select PPC_LIB_RHEAP
a0ae9c7c AB	38
	39	config 40x
	40	bool "AMCC 40x"
	41	select PPC_DCR_NATIVE
9dae8afd	42	select PPC_UDBG_16550
93173ce2	43	select 4xx_SOC
b500563b	44	select PPC_PCI_CHOICE
a0ae9c7c AB	45
	46	config 44x
	47	bool "AMCC 44x"
	48	select PPC_DCR_NATIVE
1d5499b5	49	select PPC_UDBG_16550
93173ce2	50	select 4xx_SOC
b500563b	51	select PPC_PCI_CHOICE
4ee7084e	52	select PHYS_64BIT
a0ae9c7c AB	53
	54	config E200
	55	bool "Freescale e200"
	56
	57	endchoice
	58
28794d34	59	config PPC_BOOK3S
5b7c3c91 BH	60	default y
	61	depends on PPC64
	62	select PPC_FPU
	63
28794d34	64
a0ae9c7c AB	65	config POWER4_ONLY
a0ae9c7c AB	66	bool "Optimize for POWER4"
28794d34	67	depends on PPC64 && PPC_BOOK3S
a0ae9c7c AB	68	default n
	69	---help---
	70	Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
	71	The resulting binary will not work on POWER3 or RS64 processors
	72	when compiled with binutils 2.15 or later.
	73
5b7c3c91 BH	74	config 6xx
	75	def_bool y
	76	depends on PPC32 && PPC_BOOK3S
	77
a0ae9c7c AB	78	config POWER3
a0ae9c7c AB	79	bool
28794d34	80	depends on PPC64 && PPC_BOOK3S
a0ae9c7c AB	81	default y if !POWER4_ONLY
	82
	83	config POWER4
28794d34	84	depends on PPC64 && PPC_BOOK3S
a0ae9c7c AB	85	def_bool y
a0ae9c7c AB	86
3164cccd AB	87	config TUNE_CELL
3164cccd AB	88	bool "Optimize for Cell Broadband Engine"
28794d34	89	depends on PPC64 && PPC_BOOK3S
3164cccd AB	90	help
	91	Cause the compiler to optimize for the PPE of the Cell Broadband
	92	Engine. This will make the code run considerably faster on Cell
	93	but somewhat slower on other machines. This option only changes
	94	the scheduling of instructions, not the selection of instructions
	95	itself, so the resulting kernel will keep running on all other
	96	machines. When building a kernel that is supposed to run only
	97	on Cell, you should also select the POWER4_ONLY option.
	98
a0ae9c7c AB	99	# this is temp to handle compat with arch=ppc
	100	config 8xx
	101	bool
	102
a0ae9c7c	103	config E500
39aef685	104	select FSL_EMB_PERFMON
a0ae9c7c AB	105	bool
a0ae9c7c AB	106
3dfa8773 KG	107	config PPC_E500MC
	108	bool "e500mc Support"
	109	select PPC_FPU
	110	depends on E500
	111
a0ae9c7c AB	112	config PPC_FPU
	113	bool
	114	default y if PPC64
	115
	116	config 4xx
	117	bool
	118	depends on 40x \|\| 44x
	119	default y
	120
	121	config BOOKE
	122	bool
	123	depends on E200 \|\| E500 \|\| 44x
	124	default y
	125
	126	config FSL_BOOKE
	127	bool
	128	depends on E200 \|\| E500
	129	default y
	130
39aef685	131	config FSL_EMB_PERFMON
ad562c71 AF	132	bool "Freescale Embedded Perfmon"
	133	depends on E500 \|\| PPC_83xx
	134	help
	135	This is the Performance Monitor support found on the e500 core
	136	and some e300 cores (c3 and c4). Select this only if your
	137	core supports the Embedded Performance Monitor APU
39aef685	138
a0ae9c7c AB	139	config PTE_64BIT
a0ae9c7c AB	140	bool
4ee7084e BB	141	depends on 44x \|\| E500 \|\| PPC_86xx
4ee7084e BB	142	default y if PHYS_64BIT
a0ae9c7c AB	143
a0ae9c7c AB	144	config PHYS_64BIT
4ee7084e BB	145	bool 'Large physical address support' if E500 \|\| PPC_86xx
4ee7084e BB	146	depends on (44x \|\| E500 \|\| PPC_86xx) && !PPC_83xx && !PPC_82xx
a0ae9c7c AB	147	---help---
a0ae9c7c AB	148	This option enables kernel support for larger than 32-bit physical
4ee7084e BB	149	addresses. This feature may not be available on all cores.
	150
	151	If you have more than 3.5GB of RAM or so, you also need to enable
	152	SWIOTLB under Kernel Options for this to work. The actual number
	153	is platform-dependent.
a0ae9c7c AB	154
	155	If in doubt, say N here.
	156
	157	config ALTIVEC
	158	bool "AltiVec Support"
28794d34	159	depends on 6xx \|\| POWER4
a0ae9c7c AB	160	---help---
	161	This option enables kernel support for the Altivec extensions to the
	162	PowerPC processor. The kernel currently supports saving and restoring
	163	altivec registers, and turning on the 'altivec enable' bit so user
	164	processes can execute altivec instructions.
	165
	166	This option is only usefully if you have a processor that supports
	167	altivec (G4, otherwise known as 74xx series), but does not have
	168	any affect on a non-altivec cpu (it does, however add code to the
	169	kernel).
	170
	171	If in doubt, say Y here.
	172
96d5b52c MN	173	config VSX
	174	bool "VSX Support"
	175	depends on POWER4 && ALTIVEC && PPC_FPU
	176	---help---
	177
	178	This option enables kernel support for the Vector Scaler extensions
	179	to the PowerPC processor. The kernel currently supports saving and
	180	restoring VSX registers, and turning on the 'VSX enable' bit so user
	181	processes can execute VSX instructions.
	182
	183	This option is only useful if you have a processor that supports
	184	VSX (P7 and above), but does not have any affect on a non-VSX
	185	CPUs (it does, however add code to the kernel).
	186
	187	If in doubt, say Y here.
	188
a0ae9c7c AB	189	config SPE
a0ae9c7c AB	190	bool "SPE Support"
3dfa8773	191	depends on E200 \|\| (E500 && !PPC_E500MC)
a0ae9c7c AB	192	default y
	193	---help---
	194	This option enables kernel support for the Signal Processing
	195	Extensions (SPE) to the PowerPC processor. The kernel currently
	196	supports saving and restoring SPE registers, and turning on the
	197	'spe enable' bit so user processes can execute SPE instructions.
	198
	199	This option is only useful if you have a processor that supports
	200	SPE (e500, otherwise known as 85xx series), but does not have any
	201	effect on a non-spe cpu (it does, however add code to the kernel).
	202
	203	If in doubt, say Y here.
	204
	205	config PPC_STD_MMU
5b7c3c91 BH	206	def_bool y
5b7c3c91 BH	207	depends on PPC_BOOK3S
a0ae9c7c AB	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
2d8ae638 MN	265	int "Maximum number of CPUs (2-8192)"
2d8ae638 MN	266	range 2 8192
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