[linux-block.git] / arch / metag / mm / Kconfig

# SPDX-License-Identifier: GPL-2.0
menu "Memory management options"

config PAGE_OFFSET
	hex "Kernel page offset address"
	default "0x40000000"
	help
	  This option allows you to set the virtual address at which the
	  kernel will be mapped to.
endmenu

config KERNEL_4M_PAGES
	bool "Map kernel with 4MB pages"
	depends on METAG_META21_MMU
	default y
	help
	  Map the kernel with large pages to reduce TLB pressure.

choice
	prompt "User page size"
	default PAGE_SIZE_4K

config PAGE_SIZE_4K
	bool "4kB"
	help
	  This is the default page size used by all Meta cores.

config PAGE_SIZE_8K
	bool "8kB"
	depends on METAG_META21_MMU
	help
	  This enables 8kB pages as supported by Meta 2.x and later MMUs.

config PAGE_SIZE_16K
	bool "16kB"
	depends on METAG_META21_MMU
	help
	  This enables 16kB pages as supported by Meta 2.x and later MMUs.

endchoice

config NUMA
	bool "Non Uniform Memory Access (NUMA) Support"
	select ARCH_WANT_NUMA_VARIABLE_LOCALITY
	help
	  Some Meta systems have MMU-mappable on-chip memories with
	  lower latencies than main memory. This enables support for
	  these blocks by binding them to nodes and allowing
	  memory policies to be used for prioritizing and controlling
	  allocation behaviour.

config FORCE_MAX_ZONEORDER
	int "Maximum zone order"
	range 10 32
	default "10"
	help
	  The kernel memory allocator divides physically contiguous memory
	  blocks into "zones", where each zone is a power of two number of
	  pages.  This option selects the largest power of two that the kernel
	  keeps in the memory allocator.  If you need to allocate very large
	  blocks of physically contiguous memory, then you may need to
	  increase this value.

	  This config option is actually maximum order plus one. For example,
	  a value of 11 means that the largest free memory block is 2^10 pages.

	  The page size is not necessarily 4KB.  Keep this in mind
	  when choosing a value for this option.

config METAG_L2C
	bool "Level 2 Cache Support"
	depends on METAG_META21
	help
	  Press y here to enable support for the Meta Level 2 (L2) cache. This
	  will enable the cache at start up if it hasn't already been enabled
	  by the bootloader.

	  If the bootloader enables the L2 you must press y here to ensure the
	  kernel takes the appropriate actions to keep the cache coherent.

config NODES_SHIFT
	int
	default "1"
	depends on NEED_MULTIPLE_NODES

config ARCH_FLATMEM_ENABLE
	def_bool y
	depends on !NUMA

config ARCH_SPARSEMEM_ENABLE
	def_bool y
	select SPARSEMEM_STATIC

config ARCH_SPARSEMEM_DEFAULT
	def_bool y

config ARCH_SELECT_MEMORY_MODEL
	def_bool y

config SYS_SUPPORTS_HUGETLBFS
	def_bool y
	depends on METAG_META21_MMU

choice
	prompt "HugeTLB page size"
	depends on METAG_META21_MMU && HUGETLB_PAGE
	default HUGETLB_PAGE_SIZE_1M

config HUGETLB_PAGE_SIZE_8K
	bool "8kB"
	depends on PAGE_SIZE_4K

config HUGETLB_PAGE_SIZE_16K
	bool "16kB"
	depends on PAGE_SIZE_4K || PAGE_SIZE_8K

config HUGETLB_PAGE_SIZE_32K
	bool "32kB"

config HUGETLB_PAGE_SIZE_64K
	bool "64kB"

config HUGETLB_PAGE_SIZE_128K
	bool "128kB"

config HUGETLB_PAGE_SIZE_256K
	bool "256kB"

config HUGETLB_PAGE_SIZE_512K
	bool "512kB"

config HUGETLB_PAGE_SIZE_1M
	bool "1MB"

config HUGETLB_PAGE_SIZE_2M
	bool "2MB"

config HUGETLB_PAGE_SIZE_4M
	bool "4MB"

endchoice

config METAG_COREMEM
	bool
	default y if SUSPEND

source "mm/Kconfig"
Commit	Line	Data
b2441318	1	# SPDX-License-Identifier: GPL-2.0
5633004c JH	2	menu "Memory management options"
	3
	4	config PAGE_OFFSET
	5	hex "Kernel page offset address"
	6	default "0x40000000"
	7	help
	8	This option allows you to set the virtual address at which the
	9	kernel will be mapped to.
	10	endmenu
	11
	12	config KERNEL_4M_PAGES
	13	bool "Map kernel with 4MB pages"
	14	depends on METAG_META21_MMU
	15	default y
	16	help
	17	Map the kernel with large pages to reduce TLB pressure.
	18
	19	choice
	20	prompt "User page size"
	21	default PAGE_SIZE_4K
	22
	23	config PAGE_SIZE_4K
	24	bool "4kB"
	25	help
	26	This is the default page size used by all Meta cores.
	27
	28	config PAGE_SIZE_8K
	29	bool "8kB"
	30	depends on METAG_META21_MMU
	31	help
	32	This enables 8kB pages as supported by Meta 2.x and later MMUs.
	33
	34	config PAGE_SIZE_16K
	35	bool "16kB"
	36	depends on METAG_META21_MMU
	37	help
	38	This enables 16kB pages as supported by Meta 2.x and later MMUs.
	39
	40	endchoice
	41
	42	config NUMA
	43	bool "Non Uniform Memory Access (NUMA) Support"
40f09f3c	44	select ARCH_WANT_NUMA_VARIABLE_LOCALITY
5633004c JH	45	help
	46	Some Meta systems have MMU-mappable on-chip memories with
	47	lower latencies than main memory. This enables support for
	48	these blocks by binding them to nodes and allowing
	49	memory policies to be used for prioritizing and controlling
	50	allocation behaviour.
	51
	52	config FORCE_MAX_ZONEORDER
	53	int "Maximum zone order"
	54	range 10 32
	55	default "10"
	56	help
	57	The kernel memory allocator divides physically contiguous memory
	58	blocks into "zones", where each zone is a power of two number of
	59	pages. This option selects the largest power of two that the kernel
	60	keeps in the memory allocator. If you need to allocate very large
	61	blocks of physically contiguous memory, then you may need to
	62	increase this value.
	63
	64	This config option is actually maximum order plus one. For example,
	65	a value of 11 means that the largest free memory block is 2^10 pages.
	66
	67	The page size is not necessarily 4KB. Keep this in mind
	68	when choosing a value for this option.
	69
	70	config METAG_L2C
	71	bool "Level 2 Cache Support"
	72	depends on METAG_META21
	73	help
	74	Press y here to enable support for the Meta Level 2 (L2) cache. This
	75	will enable the cache at start up if it hasn't already been enabled
	76	by the bootloader.
	77
	78	If the bootloader enables the L2 you must press y here to ensure the
	79	kernel takes the appropriate actions to keep the cache coherent.
	80
	81	config NODES_SHIFT
	82	int
	83	default "1"
	84	depends on NEED_MULTIPLE_NODES
	85
	86	config ARCH_FLATMEM_ENABLE
	87	def_bool y
	88	depends on !NUMA
	89
	90	config ARCH_SPARSEMEM_ENABLE
	91	def_bool y
	92	select SPARSEMEM_STATIC
	93
	94	config ARCH_SPARSEMEM_DEFAULT
	95	def_bool y
	96
5633004c JH	97	config ARCH_SELECT_MEMORY_MODEL
	98	def_bool y
	99
	100	config SYS_SUPPORTS_HUGETLBFS
	101	def_bool y
	102	depends on METAG_META21_MMU
	103
	104	choice
	105	prompt "HugeTLB page size"
	106	depends on METAG_META21_MMU && HUGETLB_PAGE
	107	default HUGETLB_PAGE_SIZE_1M
	108
	109	config HUGETLB_PAGE_SIZE_8K
	110	bool "8kB"
	111	depends on PAGE_SIZE_4K
	112
	113	config HUGETLB_PAGE_SIZE_16K
	114	bool "16kB"
	115	depends on PAGE_SIZE_4K \|\| PAGE_SIZE_8K
	116
	117	config HUGETLB_PAGE_SIZE_32K
	118	bool "32kB"
	119
	120	config HUGETLB_PAGE_SIZE_64K
	121	bool "64kB"
	122
	123	config HUGETLB_PAGE_SIZE_128K
	124	bool "128kB"
	125
	126	config HUGETLB_PAGE_SIZE_256K
	127	bool "256kB"
	128
	129	config HUGETLB_PAGE_SIZE_512K
	130	bool "512kB"
	131
	132	config HUGETLB_PAGE_SIZE_1M
	133	bool "1MB"
	134
	135	config HUGETLB_PAGE_SIZE_2M
	136	bool "2MB"
	137
	138	config HUGETLB_PAGE_SIZE_4M
	139	bool "4MB"
	140
	141	endchoice
	142
	143	config METAG_COREMEM
	144	bool
	145	default y if SUSPEND
	146
	147	source "mm/Kconfig"