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