1config MICROBLAZE 2 def_bool y 3 select HAVE_MEMBLOCK 4 select HAVE_MEMBLOCK_NODE_MAP 5 select HAVE_FUNCTION_TRACER 6 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 7 select HAVE_FUNCTION_GRAPH_TRACER 8 select HAVE_DYNAMIC_FTRACE 9 select HAVE_FTRACE_MCOUNT_RECORD 10 select ARCH_WANT_OPTIONAL_GPIOLIB 11 select HAVE_OPROFILE 12 select HAVE_ARCH_KGDB 13 select HAVE_DMA_ATTRS 14 select HAVE_DMA_API_DEBUG 15 select TRACING_SUPPORT 16 select OF 17 select OF_EARLY_FLATTREE 18 select HAVE_GENERIC_HARDIRQS 19 select GENERIC_IRQ_PROBE 20 select GENERIC_IRQ_SHOW 21 select GENERIC_PCI_IOMAP 22 select GENERIC_CPU_DEVICES 23 select GENERIC_ATOMIC64 24 25config SWAP 26 def_bool n 27 28config RWSEM_GENERIC_SPINLOCK 29 def_bool y 30 31config ZONE_DMA 32 def_bool y 33 34config ARCH_POPULATES_NODE_MAP 35 def_bool y 36 37config RWSEM_XCHGADD_ALGORITHM 38 bool 39 40config ARCH_HAS_ILOG2_U32 41 def_bool n 42 43config ARCH_HAS_ILOG2_U64 44 def_bool n 45 46config GENERIC_HWEIGHT 47 def_bool y 48 49config GENERIC_CALIBRATE_DELAY 50 def_bool y 51 52config GENERIC_TIME_VSYSCALL 53 def_bool n 54 55config GENERIC_CLOCKEVENTS 56 def_bool y 57 58config GENERIC_GPIO 59 def_bool y 60 61config GENERIC_CSUM 62 def_bool y 63 64config STACKTRACE_SUPPORT 65 def_bool y 66 67config LOCKDEP_SUPPORT 68 def_bool y 69 70config HAVE_LATENCYTOP_SUPPORT 71 def_bool y 72 73source "init/Kconfig" 74 75source "kernel/Kconfig.freezer" 76 77source "arch/microblaze/platform/Kconfig.platform" 78 79menu "Processor type and features" 80 81source "kernel/time/Kconfig" 82 83source "kernel/Kconfig.preempt" 84 85source "kernel/Kconfig.hz" 86 87config MMU 88 bool "MMU support" 89 default n 90 91config NO_MMU 92 bool 93 depends on !MMU 94 default y 95 96comment "Boot options" 97 98config CMDLINE_BOOL 99 bool "Default bootloader kernel arguments" 100 101config CMDLINE 102 string "Default kernel command string" 103 depends on CMDLINE_BOOL 104 default "console=ttyUL0,115200" 105 help 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 109 here. 110 111config CMDLINE_FORCE 112 bool "Force default kernel command string" 113 depends on CMDLINE_BOOL 114 default n 115 help 116 Set this to have arguments from the default kernel command string 117 override those passed by the boot loader. 118 119config SECCOMP 120 bool "Enable seccomp to safely compute untrusted bytecode" 121 depends on PROC_FS 122 default y 123 help 124 This kernel feature is useful for number crunching applications 125 that may need to compute untrusted bytecode during their 126 execution. By using pipes or other transports made available to 127 the process as file descriptors supporting the read/write 128 syscalls, it's possible to isolate those applications in 129 their own address space using seccomp. Once seccomp is 130 enabled via /proc/<pid>/seccomp, it cannot be disabled 131 and the task is only allowed to execute a few safe syscalls 132 defined by each seccomp mode. 133 134 If unsure, say Y. Only embedded should say N here. 135 136endmenu 137 138menu "Advanced setup" 139 140config ADVANCED_OPTIONS 141 bool "Prompt for advanced kernel configuration options" 142 help 143 This option will enable prompting for a variety of advanced kernel 144 configuration options. These options can cause the kernel to not 145 work if they are set incorrectly, but can be used to optimize certain 146 aspects of kernel memory management. 147 148 Unless you know what you are doing, say N here. 149 150comment "Default settings for advanced configuration options are used" 151 depends on !ADVANCED_OPTIONS 152 153config XILINX_UNCACHED_SHADOW 154 bool "Are you using uncached shadow for RAM ?" 155 depends on ADVANCED_OPTIONS && !MMU 156 default n 157 help 158 This is needed to be able to allocate uncachable memory regions. 159 The feature requires the design to define the RAM memory controller 160 window to be twice as large as the actual physical memory. 161 162config HIGHMEM 163 bool "High memory support" 164 depends on MMU 165 help 166 The address space of Microblaze processors is only 4 Gigabytes large 167 and it has to accommodate user address space, kernel address 168 space as well as some memory mapped IO. That means that, if you 169 have a large amount of physical memory and/or IO, not all of the 170 memory can be "permanently mapped" by the kernel. The physical 171 memory that is not permanently mapped is called "high memory". 172 173 If unsure, say n. 174 175config LOWMEM_SIZE_BOOL 176 bool "Set maximum low memory" 177 depends on ADVANCED_OPTIONS && MMU 178 help 179 This option allows you to set the maximum amount of memory which 180 will be used as "low memory", that is, memory which the kernel can 181 access directly, without having to set up a kernel virtual mapping. 182 This can be useful in optimizing the layout of kernel virtual 183 memory. 184 185 Say N here unless you know what you are doing. 186 187config LOWMEM_SIZE 188 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 189 default "0x30000000" 190 191config MANUAL_RESET_VECTOR 192 hex "Microblaze reset vector address setup" 193 default "0x0" 194 help 195 Set this option to have the kernel override the CPU Reset vector. 196 If zero, no change will be made to the MicroBlaze reset vector at 197 address 0x0. 198 If non-zero, a jump instruction to this address, will be written 199 to the reset vector at address 0x0. 200 If you are unsure, set it to default value 0x0. 201 202config KERNEL_START_BOOL 203 bool "Set custom kernel base address" 204 depends on ADVANCED_OPTIONS 205 help 206 This option allows you to set the kernel virtual address at which 207 the kernel will map low memory (the kernel image will be linked at 208 this address). This can be useful in optimizing the virtual memory 209 layout of the system. 210 211 Say N here unless you know what you are doing. 212 213config KERNEL_START 214 hex "Virtual address of kernel base" if KERNEL_START_BOOL 215 default "0xc0000000" if MMU 216 default KERNEL_BASE_ADDR if !MMU 217 218config TASK_SIZE_BOOL 219 bool "Set custom user task size" 220 depends on ADVANCED_OPTIONS && MMU 221 help 222 This option allows you to set the amount of virtual address space 223 allocated to user tasks. This can be useful in optimizing the 224 virtual memory layout of the system. 225 226 Say N here unless you know what you are doing. 227 228config TASK_SIZE 229 hex "Size of user task space" if TASK_SIZE_BOOL 230 default "0x80000000" 231 232choice 233 prompt "Page size" 234 default MICROBLAZE_4K_PAGES 235 depends on ADVANCED_OPTIONS && !MMU 236 help 237 Select the kernel logical page size. Increasing the page size 238 will reduce software overhead at each page boundary, allow 239 hardware prefetch mechanisms to be more effective, and allow 240 larger dma transfers increasing IO efficiency and reducing 241 overhead. However the utilization of memory will increase. 242 For example, each cached file will using a multiple of the 243 page size to hold its contents and the difference between the 244 end of file and the end of page is wasted. 245 246 If unsure, choose 4K_PAGES. 247 248config MICROBLAZE_4K_PAGES 249 bool "4k page size" 250 251config MICROBLAZE_8K_PAGES 252 bool "8k page size" 253 254config MICROBLAZE_16K_PAGES 255 bool "16k page size" 256 257config MICROBLAZE_32K_PAGES 258 bool "32k page size" 259 260endchoice 261 262config KERNEL_PAD 263 hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS 264 default "0x80000" if MMU 265 266endmenu 267 268source "mm/Kconfig" 269 270menu "Executable file formats" 271 272source "fs/Kconfig.binfmt" 273 274endmenu 275 276menu "Bus Options" 277 278config PCI 279 bool "PCI support" 280 281config PCI_DOMAINS 282 def_bool PCI 283 284config PCI_SYSCALL 285 def_bool PCI 286 287config PCI_XILINX 288 bool "Xilinx PCI host bridge support" 289 depends on PCI 290 291source "drivers/pci/Kconfig" 292 293endmenu 294 295source "net/Kconfig" 296 297source "drivers/Kconfig" 298 299source "fs/Kconfig" 300 301source "arch/microblaze/Kconfig.debug" 302 303source "security/Kconfig" 304 305source "crypto/Kconfig" 306 307source "lib/Kconfig" 308