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
36 select MODULES_USE_ELF_RELA
38 select OF_EARLY_FLATTREE
39 select PCI_DOMAINS_GENERIC if PCI
40 select PCI_SYSCALL if PCI
42 select CPU_NO_EFFICIENT_FFS
43 select MMU_GATHER_NO_RANGE
47 select TRACE_IRQFLAGS_SUPPORT
48 select GENERIC_IRQ_MULTI_HANDLER
49 select HANDLE_DOMAIN_IRQ
51 # Endianness selection
53 prompt "Endianness selection"
54 default CPU_LITTLE_ENDIAN
56 microblaze architectures can be configured for either little or
57 big endian formats. Be sure to select the appropriate mode.
62 config CPU_LITTLE_ENDIAN
67 config ARCH_HAS_ILOG2_U32
70 config ARCH_HAS_ILOG2_U64
73 config GENERIC_HWEIGHT
76 config GENERIC_CALIBRATE_DELAY
82 config STACKTRACE_SUPPORT
85 config LOCKDEP_SUPPORT
88 source "arch/microblaze/Kconfig.platform"
90 menu "Processor type and features"
92 source "kernel/Kconfig.hz"
97 comment "Boot options"
100 bool "Default bootloader kernel arguments"
103 string "Default kernel command string"
104 depends on CMDLINE_BOOL
105 default "console=ttyUL0,115200"
107 On some architectures there is currently no way for the boot loader
108 to pass arguments to the kernel. For these architectures, you should
109 supply some command-line options at build time by entering them
113 bool "Force default kernel command string"
114 depends on CMDLINE_BOOL
117 Set this to have arguments from the default kernel command string
118 override those passed by the boot loader.
122 menu "Kernel features"
128 config ADVANCED_OPTIONS
129 bool "Prompt for advanced kernel configuration options"
131 This option will enable prompting for a variety of advanced kernel
132 configuration options. These options can cause the kernel to not
133 work if they are set incorrectly, but can be used to optimize certain
134 aspects of kernel memory management.
136 Unless you know what you are doing, say N here.
138 comment "Default settings for advanced configuration options are used"
139 depends on !ADVANCED_OPTIONS
142 bool "High memory support"
145 The address space of Microblaze processors is only 4 Gigabytes large
146 and it has to accommodate user address space, kernel address
147 space as well as some memory mapped IO. That means that, if you
148 have a large amount of physical memory and/or IO, not all of the
149 memory can be "permanently mapped" by the kernel. The physical
150 memory that is not permanently mapped is called "high memory".
154 config LOWMEM_SIZE_BOOL
155 bool "Set maximum low memory"
156 depends on ADVANCED_OPTIONS
158 This option allows you to set the maximum amount of memory which
159 will be used as "low memory", that is, memory which the kernel can
160 access directly, without having to set up a kernel virtual mapping.
161 This can be useful in optimizing the layout of kernel virtual
164 Say N here unless you know what you are doing.
167 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
170 config MANUAL_RESET_VECTOR
171 hex "Microblaze reset vector address setup"
174 Set this option to have the kernel override the CPU Reset vector.
175 If zero, no change will be made to the MicroBlaze reset vector at
177 If non-zero, a jump instruction to this address, will be written
178 to the reset vector at address 0x0.
179 If you are unsure, set it to default value 0x0.
181 config KERNEL_START_BOOL
182 bool "Set custom kernel base address"
183 depends on ADVANCED_OPTIONS
185 This option allows you to set the kernel virtual address at which
186 the kernel will map low memory (the kernel image will be linked at
187 this address). This can be useful in optimizing the virtual memory
188 layout of the system.
190 Say N here unless you know what you are doing.
193 hex "Virtual address of kernel base" if KERNEL_START_BOOL
196 config TASK_SIZE_BOOL
197 bool "Set custom user task size"
198 depends on ADVANCED_OPTIONS
200 This option allows you to set the amount of virtual address space
201 allocated to user tasks. This can be useful in optimizing the
202 virtual memory layout of the system.
204 Say N here unless you know what you are doing.
207 hex "Size of user task space" if TASK_SIZE_BOOL
215 bool "Xilinx PCI host bridge support"