1
2config MICROBLAZE
3 def_bool y
4 select ARCH_32BIT_OFF_T
5 select ARCH_NO_SWAP
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
13 select TIMER_OF
14 select CLONE_BACKWARDS3
15 select COMMON_CLK
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
24 select HAVE_ARCH_HASH
25 select HAVE_ARCH_KGDB
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
33 select HAVE_PCI
34 select IRQ_DOMAIN
35 select XILINX_INTC
36 select MODULES_USE_ELF_RELA
37 select OF
38 select OF_EARLY_FLATTREE
39 select PCI_DOMAINS_GENERIC if PCI
40 select PCI_SYSCALL if PCI
41 select VIRT_TO_BUS
42 select CPU_NO_EFFICIENT_FFS
43 select MMU_GATHER_NO_RANGE
44 select SPARSE_IRQ
45 select SET_FS
46 select ZONE_DMA
47 select TRACE_IRQFLAGS_SUPPORT
48
49
50choice
51 prompt "Endianness selection"
52 default CPU_LITTLE_ENDIAN
53 help
54 microblaze architectures can be configured for either little or
55 big endian formats. Be sure to select the appropriate mode.
56
57config CPU_BIG_ENDIAN
58 bool "Big endian"
59
60config CPU_LITTLE_ENDIAN
61 bool "Little endian"
62
63endchoice
64
65config ARCH_HAS_ILOG2_U32
66 def_bool n
67
68config ARCH_HAS_ILOG2_U64
69 def_bool n
70
71config GENERIC_HWEIGHT
72 def_bool y
73
74config GENERIC_CALIBRATE_DELAY
75 def_bool y
76
77config GENERIC_CSUM
78 def_bool y
79
80config STACKTRACE_SUPPORT
81 def_bool y
82
83config LOCKDEP_SUPPORT
84 def_bool y
85
86source "arch/microblaze/Kconfig.platform"
87
88menu "Processor type and features"
89
90source "kernel/Kconfig.hz"
91
92config MMU
93 def_bool y
94
95comment "Boot options"
96
97config CMDLINE_BOOL
98 bool "Default bootloader kernel arguments"
99
100config CMDLINE
101 string "Default kernel command string"
102 depends on CMDLINE_BOOL
103 default "console=ttyUL0,115200"
104 help
105 On some architectures there is currently no way for the boot loader
106 to pass arguments to the kernel. For these architectures, you should
107 supply some command-line options at build time by entering them
108 here.
109
110config CMDLINE_FORCE
111 bool "Force default kernel command string"
112 depends on CMDLINE_BOOL
113 default n
114 help
115 Set this to have arguments from the default kernel command string
116 override those passed by the boot loader.
117
118endmenu
119
120menu "Kernel features"
121
122config NR_CPUS
123 int
124 default "1"
125
126config ADVANCED_OPTIONS
127 bool "Prompt for advanced kernel configuration options"
128 help
129 This option will enable prompting for a variety of advanced kernel
130 configuration options. These options can cause the kernel to not
131 work if they are set incorrectly, but can be used to optimize certain
132 aspects of kernel memory management.
133
134 Unless you know what you are doing, say N here.
135
136comment "Default settings for advanced configuration options are used"
137 depends on !ADVANCED_OPTIONS
138
139config HIGHMEM
140 bool "High memory support"
141 select KMAP_LOCAL
142 help
143 The address space of Microblaze processors is only 4 Gigabytes large
144 and it has to accommodate user address space, kernel address
145 space as well as some memory mapped IO. That means that, if you
146 have a large amount of physical memory and/or IO, not all of the
147 memory can be "permanently mapped" by the kernel. The physical
148 memory that is not permanently mapped is called "high memory".
149
150 If unsure, say n.
151
152config LOWMEM_SIZE_BOOL
153 bool "Set maximum low memory"
154 depends on ADVANCED_OPTIONS
155 help
156 This option allows you to set the maximum amount of memory which
157 will be used as "low memory", that is, memory which the kernel can
158 access directly, without having to set up a kernel virtual mapping.
159 This can be useful in optimizing the layout of kernel virtual
160 memory.
161
162 Say N here unless you know what you are doing.
163
164config LOWMEM_SIZE
165 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
166 default "0x30000000"
167
168config MANUAL_RESET_VECTOR
169 hex "Microblaze reset vector address setup"
170 default "0x0"
171 help
172 Set this option to have the kernel override the CPU Reset vector.
173 If zero, no change will be made to the MicroBlaze reset vector at
174 address 0x0.
175 If non-zero, a jump instruction to this address, will be written
176 to the reset vector at address 0x0.
177 If you are unsure, set it to default value 0x0.
178
179config KERNEL_START_BOOL
180 bool "Set custom kernel base address"
181 depends on ADVANCED_OPTIONS
182 help
183 This option allows you to set the kernel virtual address at which
184 the kernel will map low memory (the kernel image will be linked at
185 this address). This can be useful in optimizing the virtual memory
186 layout of the system.
187
188 Say N here unless you know what you are doing.
189
190config KERNEL_START
191 hex "Virtual address of kernel base" if KERNEL_START_BOOL
192 default "0xc0000000"
193
194config TASK_SIZE_BOOL
195 bool "Set custom user task size"
196 depends on ADVANCED_OPTIONS
197 help
198 This option allows you to set the amount of virtual address space
199 allocated to user tasks. This can be useful in optimizing the
200 virtual memory layout of the system.
201
202 Say N here unless you know what you are doing.
203
204config TASK_SIZE
205 hex "Size of user task space" if TASK_SIZE_BOOL
206 default "0x80000000"
207
208endmenu
209
210menu "Bus Options"
211
212config PCI_XILINX
213 bool "Xilinx PCI host bridge support"
214 depends on PCI
215
216endmenu
217
