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 30config SWAP 31 def_bool n 32 33config RWSEM_GENERIC_SPINLOCK 34 def_bool y 35 36config ZONE_DMA 37 def_bool y 38 39config ARCH_POPULATES_NODE_MAP 40 def_bool y 41 42config RWSEM_XCHGADD_ALGORITHM 43 bool 44 45config ARCH_HAS_ILOG2_U32 46 def_bool n 47 48config ARCH_HAS_ILOG2_U64 49 def_bool n 50 51config GENERIC_HWEIGHT 52 def_bool y 53 54config GENERIC_CALIBRATE_DELAY 55 def_bool y 56 57config GENERIC_GPIO 58 bool 59 60config GENERIC_CSUM 61 def_bool y 62 63config STACKTRACE_SUPPORT 64 def_bool y 65 66config LOCKDEP_SUPPORT 67 def_bool y 68 69config HAVE_LATENCYTOP_SUPPORT 70 def_bool y 71 72source "init/Kconfig" 73 74source "kernel/Kconfig.freezer" 75 76source "arch/microblaze/platform/Kconfig.platform" 77 78menu "Processor type and features" 79 80source "kernel/Kconfig.preempt" 81 82source "kernel/Kconfig.hz" 83 84config MMU 85 bool "MMU support" 86 default n 87 88config NO_MMU 89 bool 90 depends on !MMU 91 default y 92 93comment "Boot options" 94 95config CMDLINE_BOOL 96 bool "Default bootloader kernel arguments" 97 98config CMDLINE 99 string "Default kernel command string" 100 depends on CMDLINE_BOOL 101 default "console=ttyUL0,115200" 102 help 103 On some architectures there is currently no way for the boot loader 104 to pass arguments to the kernel. For these architectures, you should 105 supply some command-line options at build time by entering them 106 here. 107 108config CMDLINE_FORCE 109 bool "Force default kernel command string" 110 depends on CMDLINE_BOOL 111 default n 112 help 113 Set this to have arguments from the default kernel command string 114 override those passed by the boot loader. 115 116config SECCOMP 117 bool "Enable seccomp to safely compute untrusted bytecode" 118 depends on PROC_FS 119 default y 120 help 121 This kernel feature is useful for number crunching applications 122 that may need to compute untrusted bytecode during their 123 execution. By using pipes or other transports made available to 124 the process as file descriptors supporting the read/write 125 syscalls, it's possible to isolate those applications in 126 their own address space using seccomp. Once seccomp is 127 enabled via /proc/<pid>/seccomp, it cannot be disabled 128 and the task is only allowed to execute a few safe syscalls 129 defined by each seccomp mode. 130 131 If unsure, say Y. Only embedded should say N here. 132 133endmenu 134 135menu "Advanced setup" 136 137config ADVANCED_OPTIONS 138 bool "Prompt for advanced kernel configuration options" 139 help 140 This option will enable prompting for a variety of advanced kernel 141 configuration options. These options can cause the kernel to not 142 work if they are set incorrectly, but can be used to optimize certain 143 aspects of kernel memory management. 144 145 Unless you know what you are doing, say N here. 146 147comment "Default settings for advanced configuration options are used" 148 depends on !ADVANCED_OPTIONS 149 150config XILINX_UNCACHED_SHADOW 151 bool "Are you using uncached shadow for RAM ?" 152 depends on ADVANCED_OPTIONS && !MMU 153 default n 154 help 155 This is needed to be able to allocate uncachable memory regions. 156 The feature requires the design to define the RAM memory controller 157 window to be twice as large as the actual physical memory. 158 159config HIGHMEM 160 bool "High memory support" 161 depends on MMU 162 help 163 The address space of Microblaze processors is only 4 Gigabytes large 164 and it has to accommodate user address space, kernel address 165 space as well as some memory mapped IO. That means that, if you 166 have a large amount of physical memory and/or IO, not all of the 167 memory can be "permanently mapped" by the kernel. The physical 168 memory that is not permanently mapped is called "high memory". 169 170 If unsure, say n. 171 172config LOWMEM_SIZE_BOOL 173 bool "Set maximum low memory" 174 depends on ADVANCED_OPTIONS && MMU 175 help 176 This option allows you to set the maximum amount of memory which 177 will be used as "low memory", that is, memory which the kernel can 178 access directly, without having to set up a kernel virtual mapping. 179 This can be useful in optimizing the layout of kernel virtual 180 memory. 181 182 Say N here unless you know what you are doing. 183 184config LOWMEM_SIZE 185 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 186 default "0x30000000" 187 188config MANUAL_RESET_VECTOR 189 hex "Microblaze reset vector address setup" 190 default "0x0" 191 help 192 Set this option to have the kernel override the CPU Reset vector. 193 If zero, no change will be made to the MicroBlaze reset vector at 194 address 0x0. 195 If non-zero, a jump instruction to this address, will be written 196 to the reset vector at address 0x0. 197 If you are unsure, set it to default value 0x0. 198 199config KERNEL_START_BOOL 200 bool "Set custom kernel base address" 201 depends on ADVANCED_OPTIONS 202 help 203 This option allows you to set the kernel virtual address at which 204 the kernel will map low memory (the kernel image will be linked at 205 this address). This can be useful in optimizing the virtual memory 206 layout of the system. 207 208 Say N here unless you know what you are doing. 209 210config KERNEL_START 211 hex "Virtual address of kernel base" if KERNEL_START_BOOL 212 default "0xc0000000" if MMU 213 default KERNEL_BASE_ADDR if !MMU 214 215config TASK_SIZE_BOOL 216 bool "Set custom user task size" 217 depends on ADVANCED_OPTIONS && MMU 218 help 219 This option allows you to set the amount of virtual address space 220 allocated to user tasks. This can be useful in optimizing the 221 virtual memory layout of the system. 222 223 Say N here unless you know what you are doing. 224 225config TASK_SIZE 226 hex "Size of user task space" if TASK_SIZE_BOOL 227 default "0x80000000" 228 229choice 230 prompt "Page size" 231 default MICROBLAZE_4K_PAGES 232 depends on ADVANCED_OPTIONS && !MMU 233 help 234 Select the kernel logical page size. Increasing the page size 235 will reduce software overhead at each page boundary, allow 236 hardware prefetch mechanisms to be more effective, and allow 237 larger dma transfers increasing IO efficiency and reducing 238 overhead. However the utilization of memory will increase. 239 For example, each cached file will using a multiple of the 240 page size to hold its contents and the difference between the 241 end of file and the end of page is wasted. 242 243 If unsure, choose 4K_PAGES. 244 245config MICROBLAZE_4K_PAGES 246 bool "4k page size" 247 248config MICROBLAZE_16K_PAGES 249 bool "16k page size" 250 251config MICROBLAZE_64K_PAGES 252 bool "64k 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