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
46 select TRACE_IRQFLAGS_SUPPORT
47 select GENERIC_IRQ_MULTI_HANDLER
48 select HANDLE_DOMAIN_IRQ
50 # Endianness selection
52 prompt "Endianness selection"
53 default CPU_LITTLE_ENDIAN
55 microblaze architectures can be configured for either little or
56 big endian formats. Be sure to select the appropriate mode.
61 config CPU_LITTLE_ENDIAN
66 config ARCH_HAS_ILOG2_U32
69 config ARCH_HAS_ILOG2_U64
72 config GENERIC_HWEIGHT
75 config GENERIC_CALIBRATE_DELAY
81 config STACKTRACE_SUPPORT
84 config LOCKDEP_SUPPORT
87 source "arch/microblaze/Kconfig.platform"
89 menu "Processor type and features"
91 source "kernel/Kconfig.hz"
96 comment "Boot options"
99 bool "Default bootloader kernel arguments"
102 string "Default kernel command string"
103 depends on CMDLINE_BOOL
104 default "console=ttyUL0,115200"
106 On some architectures there is currently no way for the boot loader
107 to pass arguments to the kernel. For these architectures, you should
108 supply some command-line options at build time by entering them
112 bool "Force default kernel command string"
113 depends on CMDLINE_BOOL
116 Set this to have arguments from the default kernel command string
117 override those passed by the boot loader.
121 menu "Kernel features"
127 config ADVANCED_OPTIONS
128 bool "Prompt for advanced kernel configuration options"
130 This option will enable prompting for a variety of advanced kernel
131 configuration options. These options can cause the kernel to not
132 work if they are set incorrectly, but can be used to optimize certain
133 aspects of kernel memory management.
135 Unless you know what you are doing, say N here.
137 comment "Default settings for advanced configuration options are used"
138 depends on !ADVANCED_OPTIONS
141 bool "High memory support"
144 The address space of Microblaze processors is only 4 Gigabytes large
145 and it has to accommodate user address space, kernel address
146 space as well as some memory mapped IO. That means that, if you
147 have a large amount of physical memory and/or IO, not all of the
148 memory can be "permanently mapped" by the kernel. The physical
149 memory that is not permanently mapped is called "high memory".
153 config LOWMEM_SIZE_BOOL
154 bool "Set maximum low memory"
155 depends on ADVANCED_OPTIONS
157 This option allows you to set the maximum amount of memory which
158 will be used as "low memory", that is, memory which the kernel can
159 access directly, without having to set up a kernel virtual mapping.
160 This can be useful in optimizing the layout of kernel virtual
163 Say N here unless you know what you are doing.
166 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
169 config MANUAL_RESET_VECTOR
170 hex "Microblaze reset vector address setup"
173 Set this option to have the kernel override the CPU Reset vector.
174 If zero, no change will be made to the MicroBlaze reset vector at
176 If non-zero, a jump instruction to this address, will be written
177 to the reset vector at address 0x0.
178 If you are unsure, set it to default value 0x0.
180 config KERNEL_START_BOOL
181 bool "Set custom kernel base address"
182 depends on ADVANCED_OPTIONS
184 This option allows you to set the kernel virtual address at which
185 the kernel will map low memory (the kernel image will be linked at
186 this address). This can be useful in optimizing the virtual memory
187 layout of the system.
189 Say N here unless you know what you are doing.
192 hex "Virtual address of kernel base" if KERNEL_START_BOOL
195 config TASK_SIZE_BOOL
196 bool "Set custom user task size"
197 depends on ADVANCED_OPTIONS
199 This option allows you to set the amount of virtual address space
200 allocated to user tasks. This can be useful in optimizing the
201 virtual memory layout of the system.
203 Say N here unless you know what you are doing.
206 hex "Size of user task space" if TASK_SIZE_BOOL
214 bool "Xilinx PCI host bridge support"