1 # SPDX-License-Identifier: GPL-2.0-only
4 select ARCH_32BIT_OFF_T
6 select ARCH_HAS_DMA_PREP_COHERENT
7 select ARCH_HAS_GCOV_PROFILE_ALL
8 select ARCH_HAS_SYNC_DMA_FOR_CPU
9 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
10 select ARCH_MIGHT_HAVE_PC_PARPORT
11 select ARCH_WANT_IPC_PARSE_VERSION
12 select BUILDTIME_TABLE_SORT
14 select CLONE_BACKWARDS3
16 select DMA_DIRECT_REMAP
17 select GENERIC_ATOMIC64
18 select GENERIC_CPU_DEVICES
19 select GENERIC_IDLE_POLL_SETUP
20 select GENERIC_IRQ_PROBE
21 select GENERIC_IRQ_SHOW
22 select GENERIC_PCI_IOMAP
23 select GENERIC_SCHED_CLOCK
26 select HAVE_ARCH_SECCOMP
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_DMA_CONTIGUOUS
29 select HAVE_DYNAMIC_FTRACE
30 select HAVE_FTRACE_MCOUNT_RECORD
31 select HAVE_FUNCTION_GRAPH_TRACER
32 select HAVE_FUNCTION_TRACER
37 select MODULES_USE_ELF_RELA
39 select OF_EARLY_FLATTREE
40 select PCI_DOMAINS_GENERIC if PCI
41 select PCI_SYSCALL if PCI
42 select TRACING_SUPPORT
44 select CPU_NO_EFFICIENT_FFS
45 select MMU_GATHER_NO_RANGE
49 # Endianness selection
51 prompt "Endianness selection"
52 default CPU_LITTLE_ENDIAN
54 microblaze architectures can be configured for either little or
55 big endian formats. Be sure to select the appropriate mode.
60 config CPU_LITTLE_ENDIAN
68 config ARCH_HAS_ILOG2_U32
71 config ARCH_HAS_ILOG2_U64
74 config GENERIC_HWEIGHT
77 config GENERIC_CALIBRATE_DELAY
83 config STACKTRACE_SUPPORT
86 config LOCKDEP_SUPPORT
89 source "arch/microblaze/Kconfig.platform"
91 menu "Processor type and features"
93 source "kernel/Kconfig.hz"
98 comment "Boot options"
101 bool "Default bootloader kernel arguments"
104 string "Default kernel command string"
105 depends on CMDLINE_BOOL
106 default "console=ttyUL0,115200"
108 On some architectures there is currently no way for the boot loader
109 to pass arguments to the kernel. For these architectures, you should
110 supply some command-line options at build time by entering them
114 bool "Force default kernel command string"
115 depends on CMDLINE_BOOL
118 Set this to have arguments from the default kernel command string
119 override those passed by the boot loader.
123 menu "Kernel features"
129 config ADVANCED_OPTIONS
130 bool "Prompt for advanced kernel configuration options"
132 This option will enable prompting for a variety of advanced kernel
133 configuration options. These options can cause the kernel to not
134 work if they are set incorrectly, but can be used to optimize certain
135 aspects of kernel memory management.
137 Unless you know what you are doing, say N here.
139 comment "Default settings for advanced configuration options are used"
140 depends on !ADVANCED_OPTIONS
143 bool "High memory support"
146 The address space of Microblaze processors is only 4 Gigabytes large
147 and it has to accommodate user address space, kernel address
148 space as well as some memory mapped IO. That means that, if you
149 have a large amount of physical memory and/or IO, not all of the
150 memory can be "permanently mapped" by the kernel. The physical
151 memory that is not permanently mapped is called "high memory".
155 config LOWMEM_SIZE_BOOL
156 bool "Set maximum low memory"
157 depends on ADVANCED_OPTIONS
159 This option allows you to set the maximum amount of memory which
160 will be used as "low memory", that is, memory which the kernel can
161 access directly, without having to set up a kernel virtual mapping.
162 This can be useful in optimizing the layout of kernel virtual
165 Say N here unless you know what you are doing.
168 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
171 config MANUAL_RESET_VECTOR
172 hex "Microblaze reset vector address setup"
175 Set this option to have the kernel override the CPU Reset vector.
176 If zero, no change will be made to the MicroBlaze reset vector at
178 If non-zero, a jump instruction to this address, will be written
179 to the reset vector at address 0x0.
180 If you are unsure, set it to default value 0x0.
182 config KERNEL_START_BOOL
183 bool "Set custom kernel base address"
184 depends on ADVANCED_OPTIONS
186 This option allows you to set the kernel virtual address at which
187 the kernel will map low memory (the kernel image will be linked at
188 this address). This can be useful in optimizing the virtual memory
189 layout of the system.
191 Say N here unless you know what you are doing.
194 hex "Virtual address of kernel base" if KERNEL_START_BOOL
197 config TASK_SIZE_BOOL
198 bool "Set custom user task size"
199 depends on ADVANCED_OPTIONS
201 This option allows you to set the amount of virtual address space
202 allocated to user tasks. This can be useful in optimizing the
203 virtual memory layout of the system.
205 Say N here unless you know what you are doing.
208 hex "Size of user task space" if TASK_SIZE_BOOL
216 bool "Xilinx PCI host bridge support"