1# For a description of the syntax of this configuration file, 2# see Documentation/kbuild/kconfig-language.txt. 3 4mainmenu "Linux/Microblaze Kernel Configuration" 5 6config MICROBLAZE 7 def_bool y 8 select HAVE_MEMBLOCK 9 select HAVE_FUNCTION_TRACER 10 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 11 select HAVE_FUNCTION_GRAPH_TRACER 12 select HAVE_DYNAMIC_FTRACE 13 select HAVE_FTRACE_MCOUNT_RECORD 14 select USB_ARCH_HAS_EHCI 15 select ARCH_WANT_OPTIONAL_GPIOLIB 16 select HAVE_OPROFILE 17 select HAVE_ARCH_KGDB 18 select HAVE_DMA_ATTRS 19 select HAVE_DMA_API_DEBUG 20 select TRACING_SUPPORT 21 select OF 22 select OF_FLATTREE 23 24config SWAP 25 def_bool n 26 27config RWSEM_GENERIC_SPINLOCK 28 def_bool y 29 30config RWSEM_XCHGADD_ALGORITHM 31 bool 32 33config ARCH_HAS_ILOG2_U32 34 def_bool n 35 36config ARCH_HAS_ILOG2_U64 37 def_bool n 38 39config GENERIC_FIND_NEXT_BIT 40 def_bool y 41 42config GENERIC_HWEIGHT 43 def_bool y 44 45config GENERIC_HARDIRQS 46 def_bool y 47 48config GENERIC_IRQ_PROBE 49 def_bool y 50 51config GENERIC_CALIBRATE_DELAY 52 def_bool y 53 54config GENERIC_TIME_VSYSCALL 55 def_bool n 56 57config GENERIC_CLOCKEVENTS 58 def_bool y 59 60config GENERIC_HARDIRQS_NO__DO_IRQ 61 def_bool y 62 63config GENERIC_GPIO 64 def_bool y 65 66config GENERIC_CSUM 67 def_bool y 68 69config STACKTRACE_SUPPORT 70 def_bool y 71 72config LOCKDEP_SUPPORT 73 def_bool y 74 75config HAVE_LATENCYTOP_SUPPORT 76 def_bool y 77 78source "init/Kconfig" 79 80source "kernel/Kconfig.freezer" 81 82source "arch/microblaze/platform/Kconfig.platform" 83 84menu "Processor type and features" 85 86source "kernel/time/Kconfig" 87 88source "kernel/Kconfig.preempt" 89 90source "kernel/Kconfig.hz" 91 92config MMU 93 bool "MMU support" 94 default n 95 96config NO_MMU 97 bool 98 depends on !MMU 99 default y 100 101comment "Boot options" 102 103config CMDLINE_BOOL 104 bool "Default bootloader kernel arguments" 105 106config CMDLINE 107 string "Default kernel command string" 108 depends on CMDLINE_BOOL 109 default "console=ttyUL0,115200" 110 help 111 On some architectures there is currently no way for the boot loader 112 to pass arguments to the kernel. For these architectures, you should 113 supply some command-line options at build time by entering them 114 here. 115 116config CMDLINE_FORCE 117 bool "Force default kernel command string" 118 depends on CMDLINE_BOOL 119 default n 120 help 121 Set this to have arguments from the default kernel command string 122 override those passed by the boot loader. 123 124endmenu 125 126menu "Advanced setup" 127 128config ADVANCED_OPTIONS 129 bool "Prompt for advanced kernel configuration options" 130 help 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. 135 136 Unless you know what you are doing, say N here. 137 138comment "Default settings for advanced configuration options are used" 139 depends on !ADVANCED_OPTIONS 140 141config XILINX_UNCACHED_SHADOW 142 bool "Are you using uncached shadow for RAM ?" 143 depends on ADVANCED_OPTIONS && !MMU 144 default n 145 help 146 This is needed to be able to allocate uncachable memory regions. 147 The feature requires the design to define the RAM memory controller 148 window to be twice as large as the actual physical memory. 149 150config HIGHMEM_START_BOOL 151 bool "Set high memory pool address" 152 depends on ADVANCED_OPTIONS && HIGHMEM 153 help 154 This option allows you to set the base address of the kernel virtual 155 area used to map high memory pages. This can be useful in 156 optimizing the layout of kernel virtual memory. 157 158 Say N here unless you know what you are doing. 159 160config HIGHMEM_START 161 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL 162 depends on MMU 163 default "0xfe000000" 164 165config LOWMEM_SIZE_BOOL 166 bool "Set maximum low memory" 167 depends on ADVANCED_OPTIONS && MMU 168 help 169 This option allows you to set the maximum amount of memory which 170 will be used as "low memory", that is, memory which the kernel can 171 access directly, without having to set up a kernel virtual mapping. 172 This can be useful in optimizing the layout of kernel virtual 173 memory. 174 175 Say N here unless you know what you are doing. 176 177config LOWMEM_SIZE 178 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 179 default "0x30000000" 180 181config KERNEL_START_BOOL 182 bool "Set custom kernel base address" 183 depends on ADVANCED_OPTIONS 184 help 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. 189 190 Say N here unless you know what you are doing. 191 192config KERNEL_START 193 hex "Virtual address of kernel base" if KERNEL_START_BOOL 194 default "0xc0000000" if MMU 195 default KERNEL_BASE_ADDR if !MMU 196 197config TASK_SIZE_BOOL 198 bool "Set custom user task size" 199 depends on ADVANCED_OPTIONS && MMU 200 help 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. 204 205 Say N here unless you know what you are doing. 206 207config TASK_SIZE 208 hex "Size of user task space" if TASK_SIZE_BOOL 209 default "0x80000000" 210 211choice 212 prompt "Page size" 213 default MICROBLAZE_4K_PAGES 214 depends on ADVANCED_OPTIONS && !MMU 215 help 216 Select the kernel logical page size. Increasing the page size 217 will reduce software overhead at each page boundary, allow 218 hardware prefetch mechanisms to be more effective, and allow 219 larger dma transfers increasing IO efficiency and reducing 220 overhead. However the utilization of memory will increase. 221 For example, each cached file will using a multiple of the 222 page size to hold its contents and the difference between the 223 end of file and the end of page is wasted. 224 225 If unsure, choose 4K_PAGES. 226 227config MICROBLAZE_4K_PAGES 228 bool "4k page size" 229 230config MICROBLAZE_8K_PAGES 231 bool "8k page size" 232 233config MICROBLAZE_16K_PAGES 234 bool "16k page size" 235 236config MICROBLAZE_32K_PAGES 237 bool "32k page size" 238 239endchoice 240 241endmenu 242 243source "mm/Kconfig" 244 245menu "Exectuable file formats" 246 247source "fs/Kconfig.binfmt" 248 249endmenu 250 251menu "Bus Options" 252 253config PCI 254 bool "PCI support" 255 256config PCI_DOMAINS 257 def_bool PCI 258 259config PCI_SYSCALL 260 def_bool PCI 261 262config PCI_XILINX 263 bool "Xilinx PCI host bridge support" 264 depends on PCI 265 266source "drivers/pci/Kconfig" 267 268endmenu 269 270source "net/Kconfig" 271 272source "drivers/Kconfig" 273 274source "fs/Kconfig" 275 276source "arch/microblaze/Kconfig.debug" 277 278source "security/Kconfig" 279 280source "crypto/Kconfig" 281 282source "lib/Kconfig" 283