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 HAVE_DEBUG_KMEMLEAK 20 select IRQ_DOMAIN 21 select HAVE_GENERIC_HARDIRQS 22 select GENERIC_IRQ_PROBE 23 select GENERIC_IRQ_SHOW 24 select GENERIC_PCI_IOMAP 25 select GENERIC_CPU_DEVICES 26 select GENERIC_ATOMIC64 27 select GENERIC_CLOCKEVENTS 28 select MODULES_USE_ELF_RELA 29 select CLONE_BACKWARDS 30 31config SWAP 32 def_bool n 33 34config RWSEM_GENERIC_SPINLOCK 35 def_bool y 36 37config ZONE_DMA 38 def_bool y 39 40config ARCH_POPULATES_NODE_MAP 41 def_bool y 42 43config RWSEM_XCHGADD_ALGORITHM 44 bool 45 46config ARCH_HAS_ILOG2_U32 47 def_bool n 48 49config ARCH_HAS_ILOG2_U64 50 def_bool n 51 52config GENERIC_HWEIGHT 53 def_bool y 54 55config GENERIC_CALIBRATE_DELAY 56 def_bool y 57 58config GENERIC_GPIO 59 bool 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/Kconfig.preempt" 82 83source "kernel/Kconfig.hz" 84 85config MMU 86 bool "MMU support" 87 default n 88 89config NO_MMU 90 bool 91 depends on !MMU 92 default y 93 94comment "Boot options" 95 96config CMDLINE_BOOL 97 bool "Default bootloader kernel arguments" 98 99config CMDLINE 100 string "Default kernel command string" 101 depends on CMDLINE_BOOL 102 default "console=ttyUL0,115200" 103 help 104 On some architectures there is currently no way for the boot loader 105 to pass arguments to the kernel. For these architectures, you should 106 supply some command-line options at build time by entering them 107 here. 108 109config CMDLINE_FORCE 110 bool "Force default kernel command string" 111 depends on CMDLINE_BOOL 112 default n 113 help 114 Set this to have arguments from the default kernel command string 115 override those passed by the boot loader. 116 117config SECCOMP 118 bool "Enable seccomp to safely compute untrusted bytecode" 119 depends on PROC_FS 120 default y 121 help 122 This kernel feature is useful for number crunching applications 123 that may need to compute untrusted bytecode during their 124 execution. By using pipes or other transports made available to 125 the process as file descriptors supporting the read/write 126 syscalls, it's possible to isolate those applications in 127 their own address space using seccomp. Once seccomp is 128 enabled via /proc/<pid>/seccomp, it cannot be disabled 129 and the task is only allowed to execute a few safe syscalls 130 defined by each seccomp mode. 131 132 If unsure, say Y. Only embedded should say N here. 133 134endmenu 135 136menu "Advanced setup" 137 138config ADVANCED_OPTIONS 139 bool "Prompt for advanced kernel configuration options" 140 help 141 This option will enable prompting for a variety of advanced kernel 142 configuration options. These options can cause the kernel to not 143 work if they are set incorrectly, but can be used to optimize certain 144 aspects of kernel memory management. 145 146 Unless you know what you are doing, say N here. 147 148comment "Default settings for advanced configuration options are used" 149 depends on !ADVANCED_OPTIONS 150 151config XILINX_UNCACHED_SHADOW 152 bool "Are you using uncached shadow for RAM ?" 153 depends on ADVANCED_OPTIONS && !MMU 154 default n 155 help 156 This is needed to be able to allocate uncachable memory regions. 157 The feature requires the design to define the RAM memory controller 158 window to be twice as large as the actual physical memory. 159 160config HIGHMEM 161 bool "High memory support" 162 depends on MMU 163 help 164 The address space of Microblaze processors is only 4 Gigabytes large 165 and it has to accommodate user address space, kernel address 166 space as well as some memory mapped IO. That means that, if you 167 have a large amount of physical memory and/or IO, not all of the 168 memory can be "permanently mapped" by the kernel. The physical 169 memory that is not permanently mapped is called "high memory". 170 171 If unsure, say n. 172 173config LOWMEM_SIZE_BOOL 174 bool "Set maximum low memory" 175 depends on ADVANCED_OPTIONS && MMU 176 help 177 This option allows you to set the maximum amount of memory which 178 will be used as "low memory", that is, memory which the kernel can 179 access directly, without having to set up a kernel virtual mapping. 180 This can be useful in optimizing the layout of kernel virtual 181 memory. 182 183 Say N here unless you know what you are doing. 184 185config LOWMEM_SIZE 186 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 187 default "0x30000000" 188 189config MANUAL_RESET_VECTOR 190 hex "Microblaze reset vector address setup" 191 default "0x0" 192 help 193 Set this option to have the kernel override the CPU Reset vector. 194 If zero, no change will be made to the MicroBlaze reset vector at 195 address 0x0. 196 If non-zero, a jump instruction to this address, will be written 197 to the reset vector at address 0x0. 198 If you are unsure, set it to default value 0x0. 199 200config KERNEL_START_BOOL 201 bool "Set custom kernel base address" 202 depends on ADVANCED_OPTIONS 203 help 204 This option allows you to set the kernel virtual address at which 205 the kernel will map low memory (the kernel image will be linked at 206 this address). This can be useful in optimizing the virtual memory 207 layout of the system. 208 209 Say N here unless you know what you are doing. 210 211config KERNEL_START 212 hex "Virtual address of kernel base" if KERNEL_START_BOOL 213 default "0xc0000000" if MMU 214 default KERNEL_BASE_ADDR if !MMU 215 216config TASK_SIZE_BOOL 217 bool "Set custom user task size" 218 depends on ADVANCED_OPTIONS && MMU 219 help 220 This option allows you to set the amount of virtual address space 221 allocated to user tasks. This can be useful in optimizing the 222 virtual memory layout of the system. 223 224 Say N here unless you know what you are doing. 225 226config TASK_SIZE 227 hex "Size of user task space" if TASK_SIZE_BOOL 228 default "0x80000000" 229 230choice 231 prompt "Page size" 232 default MICROBLAZE_4K_PAGES 233 depends on ADVANCED_OPTIONS && !MMU 234 help 235 Select the kernel logical page size. Increasing the page size 236 will reduce software overhead at each page boundary, allow 237 hardware prefetch mechanisms to be more effective, and allow 238 larger dma transfers increasing IO efficiency and reducing 239 overhead. However the utilization of memory will increase. 240 For example, each cached file will using a multiple of the 241 page size to hold its contents and the difference between the 242 end of file and the end of page is wasted. 243 244 If unsure, choose 4K_PAGES. 245 246config MICROBLAZE_4K_PAGES 247 bool "4k page size" 248 249config MICROBLAZE_16K_PAGES 250 bool "16k page size" 251 252config MICROBLAZE_64K_PAGES 253 bool "64k 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