4 select GENERIC_ATOMIC64
5 select GENERIC_CLOCKEVENTS
6 select GENERIC_CPU_DEVICES
7 select GENERIC_IRQ_PROBE
8 select GENERIC_IRQ_SHOW
9 select GENERIC_STRNCPY_FROM_USER
10 select GENERIC_STRNLEN_USER
11 select HAVE_ARCH_TRACEHOOK
14 select MODULES_USE_ELF_RELA
16 select OF_EARLY_FLATTREE
19 select USB_ARCH_HAS_HCD if USB_SUPPORT
20 select CPU_NO_EFFICIENT_FFS
25 config GENERIC_HWEIGHT
28 config GENERIC_CALIBRATE_DELAY
43 config RWSEM_GENERIC_SPINLOCK
46 config TRACE_IRQFLAGS_SUPPORT
51 menu "Kernel features"
53 source "kernel/Kconfig.preempt"
55 source "kernel/Kconfig.freezer"
57 source "kernel/Kconfig.hz"
61 config FORCE_MAX_ZONEORDER
62 int "Maximum zone order"
66 The kernel memory allocator divides physically contiguous memory
67 blocks into "zones", where each zone is a power of two number of
68 pages. This option selects the largest power of two that the kernel
69 keeps in the memory allocator. If you need to allocate very large
70 blocks of physically contiguous memory, then you may need to
73 This config option is actually maximum order plus one. For example,
74 a value of 11 means that the largest free memory block is 2^10 pages.
78 source "arch/nios2/platform/Kconfig.platform"
80 menu "Processor type and features"
89 config NIOS2_ALIGNMENT_TRAP
90 bool "Catch alignment trap"
93 Nios II CPUs cannot fetch/store data which is not bus aligned,
94 i.e., a 2 or 4 byte fetch must start at an address divisible by
95 2 or 4. Any non-aligned load/store instructions will be trapped and
96 emulated in software if you say Y here, which has a performance
99 comment "Boot options"
102 bool "Default bootloader kernel arguments"
106 string "Default kernel command string"
108 depends on CMDLINE_BOOL
110 On some platforms, there is currently no way for the boot loader to
111 pass arguments to the kernel. For these platforms, you can supply
112 some command-line options at build time by entering them here. In
113 other cases you can specify kernel args so that you don't have
114 to set them up in board prom initialization routines.
117 bool "Force default kernel command string"
118 depends on CMDLINE_BOOL
120 Set this to have arguments from the default kernel command string
121 override those passed by the boot loader.
123 config NIOS2_CMDLINE_IGNORE_DTB
124 bool "Ignore kernel command string from DTB"
125 depends on CMDLINE_BOOL
126 depends on !CMDLINE_FORCE
129 Set this to ignore the bootargs property from the devicetree's
130 chosen node and fall back to CMDLINE if nothing is passed.
132 config NIOS2_PASS_CMDLINE
133 bool "Passed kernel command line from u-boot"
136 Use bootargs env variable from u-boot for kernel command line.
137 will override "Default kernel command string".
138 Say N if you are unsure.
140 config NIOS2_BOOT_LINK_OFFSET
141 hex "Link address offset for booting"
144 This option allows you to set the link address offset of the zImage.
145 This can be useful if you are on a board which has a small amount of
150 menu "Advanced setup"
152 config ADVANCED_OPTIONS
153 bool "Prompt for advanced kernel configuration options"
156 comment "Default settings for advanced configuration options are used"
157 depends on !ADVANCED_OPTIONS
159 config NIOS2_KERNEL_MMU_REGION_BASE_BOOL
160 bool "Set custom kernel MMU region base address"
161 depends on ADVANCED_OPTIONS
163 This option allows you to set the virtual address of the kernel MMU region.
165 Say N here unless you know what you are doing.
167 config NIOS2_KERNEL_MMU_REGION_BASE
168 hex "Virtual base address of the kernel MMU region " if NIOS2_KERNEL_MMU_REGION_BASE_BOOL
171 This option allows you to set the virtual base address of the kernel MMU region.
173 config NIOS2_KERNEL_REGION_BASE_BOOL
174 bool "Set custom kernel region base address"
175 depends on ADVANCED_OPTIONS
177 This option allows you to set the virtual address of the kernel region.
179 Say N here unless you know what you are doing.
181 config NIOS2_KERNEL_REGION_BASE
182 hex "Virtual base address of the kernel region " if NIOS2_KERNEL_REGION_BASE_BOOL
185 config NIOS2_IO_REGION_BASE_BOOL
186 bool "Set custom I/O region base address"
187 depends on ADVANCED_OPTIONS
189 This option allows you to set the virtual address of the I/O region.
191 Say N here unless you know what you are doing.
193 config NIOS2_IO_REGION_BASE
194 hex "Virtual base address of the I/O region" if NIOS2_IO_REGION_BASE_BOOL
199 menu "Executable file formats"
201 source "fs/Kconfig.binfmt"
207 source "drivers/Kconfig"
211 source "arch/nios2/Kconfig.debug"
213 source "security/Kconfig"
215 source "crypto/Kconfig"