1config MICROBLAZE 2 def_bool y 3 select ARCH_HAS_GCOV_PROFILE_ALL 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select ARCH_WANT_IPC_PARSE_VERSION 6 select BUILDTIME_EXTABLE_SORT 7 select CLKSRC_OF 8 select CLONE_BACKWARDS3 9 select COMMON_CLK 10 select GENERIC_ATOMIC64 11 select GENERIC_CLOCKEVENTS 12 select GENERIC_CPU_DEVICES 13 select GENERIC_IDLE_POLL_SETUP 14 select GENERIC_IRQ_PROBE 15 select GENERIC_IRQ_SHOW 16 select GENERIC_PCI_IOMAP 17 select GENERIC_SCHED_CLOCK 18 select HAVE_ARCH_HASH 19 select HAVE_ARCH_KGDB 20 select HAVE_DEBUG_KMEMLEAK 21 select HAVE_DMA_API_DEBUG 22 select HAVE_DYNAMIC_FTRACE 23 select HAVE_FTRACE_MCOUNT_RECORD 24 select HAVE_FUNCTION_GRAPH_TRACER 25 select HAVE_FUNCTION_TRACER 26 select HAVE_MEMBLOCK 27 select HAVE_MEMBLOCK_NODE_MAP 28 select HAVE_OPROFILE 29 select IRQ_DOMAIN 30 select XILINX_INTC 31 select MODULES_USE_ELF_RELA 32 select OF 33 select OF_EARLY_FLATTREE 34 select TRACING_SUPPORT 35 select VIRT_TO_BUS 36 select CPU_NO_EFFICIENT_FFS 37 38config SWAP 39 def_bool n 40 41config RWSEM_GENERIC_SPINLOCK 42 def_bool y 43 44config ZONE_DMA 45 def_bool y 46 47config RWSEM_XCHGADD_ALGORITHM 48 bool 49 50config ARCH_HAS_ILOG2_U32 51 def_bool n 52 53config ARCH_HAS_ILOG2_U64 54 def_bool n 55 56config GENERIC_HWEIGHT 57 def_bool y 58 59config GENERIC_CALIBRATE_DELAY 60 def_bool y 61 62config GENERIC_CSUM 63 def_bool y 64 65config STACKTRACE_SUPPORT 66 def_bool y 67 68config LOCKDEP_SUPPORT 69 def_bool y 70 71source "init/Kconfig" 72 73source "kernel/Kconfig.freezer" 74 75source "arch/microblaze/Kconfig.platform" 76 77menu "Processor type and features" 78 79source "kernel/Kconfig.preempt" 80 81source "kernel/Kconfig.hz" 82 83config MMU 84 bool "MMU support" 85 default n 86 87comment "Boot options" 88 89config CMDLINE_BOOL 90 bool "Default bootloader kernel arguments" 91 92config CMDLINE 93 string "Default kernel command string" 94 depends on CMDLINE_BOOL 95 default "console=ttyUL0,115200" 96 help 97 On some architectures there is currently no way for the boot loader 98 to pass arguments to the kernel. For these architectures, you should 99 supply some command-line options at build time by entering them 100 here. 101 102config CMDLINE_FORCE 103 bool "Force default kernel command string" 104 depends on CMDLINE_BOOL 105 default n 106 help 107 Set this to have arguments from the default kernel command string 108 override those passed by the boot loader. 109 110config SECCOMP 111 bool "Enable seccomp to safely compute untrusted bytecode" 112 depends on PROC_FS 113 default y 114 help 115 This kernel feature is useful for number crunching applications 116 that may need to compute untrusted bytecode during their 117 execution. By using pipes or other transports made available to 118 the process as file descriptors supporting the read/write 119 syscalls, it's possible to isolate those applications in 120 their own address space using seccomp. Once seccomp is 121 enabled via /proc/<pid>/seccomp, it cannot be disabled 122 and the task is only allowed to execute a few safe syscalls 123 defined by each seccomp mode. 124 125 If unsure, say Y. Only embedded should say N here. 126 127endmenu 128 129menu "Kernel features" 130 131config NR_CPUS 132 int 133 default "1" 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_16K_PAGES 247 bool "16k page size" 248 249config MICROBLAZE_64K_PAGES 250 bool "64k page size" 251 252endchoice 253 254source "mm/Kconfig" 255 256endmenu 257 258menu "Executable file formats" 259 260source "fs/Kconfig.binfmt" 261 262endmenu 263 264menu "Bus Options" 265 266config PCI 267 bool "PCI support" 268 269config PCI_DOMAINS 270 def_bool PCI 271 272config PCI_DOMAINS_GENERIC 273 def_bool PCI_DOMAINS 274 275config PCI_SYSCALL 276 def_bool PCI 277 278config PCI_XILINX 279 bool "Xilinx PCI host bridge support" 280 depends on PCI 281 282source "drivers/pci/Kconfig" 283 284endmenu 285 286source "net/Kconfig" 287 288source "drivers/Kconfig" 289 290source "fs/Kconfig" 291 292source "arch/microblaze/Kconfig.debug" 293 294source "security/Kconfig" 295 296source "crypto/Kconfig" 297 298source "lib/Kconfig" 299