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 ARCH_WANT_IPC_PARSE_VERSION 19 select IRQ_DOMAIN 20 select HAVE_GENERIC_HARDIRQS 21 select GENERIC_IRQ_PROBE 22 select GENERIC_IRQ_SHOW 23 select GENERIC_PCI_IOMAP 24 select GENERIC_CPU_DEVICES 25 select GENERIC_ATOMIC64 26 select GENERIC_CLOCKEVENTS 27 28config SWAP 29 def_bool n 30 31config RWSEM_GENERIC_SPINLOCK 32 def_bool y 33 34config ZONE_DMA 35 def_bool y 36 37config ARCH_POPULATES_NODE_MAP 38 def_bool y 39 40config RWSEM_XCHGADD_ALGORITHM 41 bool 42 43config ARCH_HAS_ILOG2_U32 44 def_bool n 45 46config ARCH_HAS_ILOG2_U64 47 def_bool n 48 49config GENERIC_HWEIGHT 50 def_bool y 51 52config GENERIC_CALIBRATE_DELAY 53 def_bool y 54 55config GENERIC_GPIO 56 bool 57 58config GENERIC_CSUM 59 def_bool y 60 61config STACKTRACE_SUPPORT 62 def_bool y 63 64config LOCKDEP_SUPPORT 65 def_bool y 66 67config HAVE_LATENCYTOP_SUPPORT 68 def_bool y 69 70source "init/Kconfig" 71 72source "kernel/Kconfig.freezer" 73 74source "arch/microblaze/platform/Kconfig.platform" 75 76menu "Processor type and features" 77 78source "kernel/Kconfig.preempt" 79 80source "kernel/Kconfig.hz" 81 82config MMU 83 bool "MMU support" 84 default n 85 86config NO_MMU 87 bool 88 depends on !MMU 89 default y 90 91comment "Boot options" 92 93config CMDLINE_BOOL 94 bool "Default bootloader kernel arguments" 95 96config CMDLINE 97 string "Default kernel command string" 98 depends on CMDLINE_BOOL 99 default "console=ttyUL0,115200" 100 help 101 On some architectures there is currently no way for the boot loader 102 to pass arguments to the kernel. For these architectures, you should 103 supply some command-line options at build time by entering them 104 here. 105 106config CMDLINE_FORCE 107 bool "Force default kernel command string" 108 depends on CMDLINE_BOOL 109 default n 110 help 111 Set this to have arguments from the default kernel command string 112 override those passed by the boot loader. 113 114config SECCOMP 115 bool "Enable seccomp to safely compute untrusted bytecode" 116 depends on PROC_FS 117 default y 118 help 119 This kernel feature is useful for number crunching applications 120 that may need to compute untrusted bytecode during their 121 execution. By using pipes or other transports made available to 122 the process as file descriptors supporting the read/write 123 syscalls, it's possible to isolate those applications in 124 their own address space using seccomp. Once seccomp is 125 enabled via /proc/<pid>/seccomp, it cannot be disabled 126 and the task is only allowed to execute a few safe syscalls 127 defined by each seccomp mode. 128 129 If unsure, say Y. Only embedded should say N here. 130 131endmenu 132 133menu "Advanced setup" 134 135config ADVANCED_OPTIONS 136 bool "Prompt for advanced kernel configuration options" 137 help 138 This option will enable prompting for a variety of advanced kernel 139 configuration options. These options can cause the kernel to not 140 work if they are set incorrectly, but can be used to optimize certain 141 aspects of kernel memory management. 142 143 Unless you know what you are doing, say N here. 144 145comment "Default settings for advanced configuration options are used" 146 depends on !ADVANCED_OPTIONS 147 148config XILINX_UNCACHED_SHADOW 149 bool "Are you using uncached shadow for RAM ?" 150 depends on ADVANCED_OPTIONS && !MMU 151 default n 152 help 153 This is needed to be able to allocate uncachable memory regions. 154 The feature requires the design to define the RAM memory controller 155 window to be twice as large as the actual physical memory. 156 157config HIGHMEM 158 bool "High memory support" 159 depends on MMU 160 help 161 The address space of Microblaze processors is only 4 Gigabytes large 162 and it has to accommodate user address space, kernel address 163 space as well as some memory mapped IO. That means that, if you 164 have a large amount of physical memory and/or IO, not all of the 165 memory can be "permanently mapped" by the kernel. The physical 166 memory that is not permanently mapped is called "high memory". 167 168 If unsure, say n. 169 170config LOWMEM_SIZE_BOOL 171 bool "Set maximum low memory" 172 depends on ADVANCED_OPTIONS && MMU 173 help 174 This option allows you to set the maximum amount of memory which 175 will be used as "low memory", that is, memory which the kernel can 176 access directly, without having to set up a kernel virtual mapping. 177 This can be useful in optimizing the layout of kernel virtual 178 memory. 179 180 Say N here unless you know what you are doing. 181 182config LOWMEM_SIZE 183 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 184 default "0x30000000" 185 186config MANUAL_RESET_VECTOR 187 hex "Microblaze reset vector address setup" 188 default "0x0" 189 help 190 Set this option to have the kernel override the CPU Reset vector. 191 If zero, no change will be made to the MicroBlaze reset vector at 192 address 0x0. 193 If non-zero, a jump instruction to this address, will be written 194 to the reset vector at address 0x0. 195 If you are unsure, set it to default value 0x0. 196 197config KERNEL_START_BOOL 198 bool "Set custom kernel base address" 199 depends on ADVANCED_OPTIONS 200 help 201 This option allows you to set the kernel virtual address at which 202 the kernel will map low memory (the kernel image will be linked at 203 this address). This can be useful in optimizing the virtual memory 204 layout of the system. 205 206 Say N here unless you know what you are doing. 207 208config KERNEL_START 209 hex "Virtual address of kernel base" if KERNEL_START_BOOL 210 default "0xc0000000" if MMU 211 default KERNEL_BASE_ADDR if !MMU 212 213config TASK_SIZE_BOOL 214 bool "Set custom user task size" 215 depends on ADVANCED_OPTIONS && MMU 216 help 217 This option allows you to set the amount of virtual address space 218 allocated to user tasks. This can be useful in optimizing the 219 virtual memory layout of the system. 220 221 Say N here unless you know what you are doing. 222 223config TASK_SIZE 224 hex "Size of user task space" if TASK_SIZE_BOOL 225 default "0x80000000" 226 227choice 228 prompt "Page size" 229 default MICROBLAZE_4K_PAGES 230 depends on ADVANCED_OPTIONS && !MMU 231 help 232 Select the kernel logical page size. Increasing the page size 233 will reduce software overhead at each page boundary, allow 234 hardware prefetch mechanisms to be more effective, and allow 235 larger dma transfers increasing IO efficiency and reducing 236 overhead. However the utilization of memory will increase. 237 For example, each cached file will using a multiple of the 238 page size to hold its contents and the difference between the 239 end of file and the end of page is wasted. 240 241 If unsure, choose 4K_PAGES. 242 243config MICROBLAZE_4K_PAGES 244 bool "4k page size" 245 246config MICROBLAZE_8K_PAGES 247 bool "8k page size" 248 249config MICROBLAZE_16K_PAGES 250 bool "16k page size" 251 252config MICROBLAZE_32K_PAGES 253 bool "32k page size" 254 255endchoice 256 257config KERNEL_PAD 258 hex "Kernel PAD for unpacking" if ADVANCED_OPTIONS 259 default "0x80000" if MMU 260 261endmenu 262 263source "mm/Kconfig" 264 265menu "Executable file formats" 266 267source "fs/Kconfig.binfmt" 268 269endmenu 270 271menu "Bus Options" 272 273config PCI 274 bool "PCI support" 275 276config PCI_DOMAINS 277 def_bool PCI 278 279config PCI_SYSCALL 280 def_bool PCI 281 282config PCI_XILINX 283 bool "Xilinx PCI host bridge support" 284 depends on PCI 285 286source "drivers/pci/Kconfig" 287 288endmenu 289 290source "net/Kconfig" 291 292source "drivers/Kconfig" 293 294source "fs/Kconfig" 295 296source "arch/microblaze/Kconfig.debug" 297 298source "security/Kconfig" 299 300source "crypto/Kconfig" 301 302source "lib/Kconfig" 303