1config MICROBLAZE 2 def_bool y 3 select ARCH_HAS_GCOV_PROFILE_ALL 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select ARCH_NO_COHERENT_DMA_MMAP if !MMU 6 select ARCH_WANT_IPC_PARSE_VERSION 7 select BUILDTIME_EXTABLE_SORT 8 select TIMER_OF 9 select CLONE_BACKWARDS3 10 select COMMON_CLK 11 select GENERIC_ATOMIC64 12 select GENERIC_CLOCKEVENTS 13 select GENERIC_CPU_DEVICES 14 select GENERIC_IDLE_POLL_SETUP 15 select GENERIC_IRQ_PROBE 16 select GENERIC_IRQ_SHOW 17 select GENERIC_PCI_IOMAP 18 select GENERIC_SCHED_CLOCK 19 select HAVE_ARCH_HASH 20 select HAVE_ARCH_KGDB 21 select HAVE_DEBUG_KMEMLEAK 22 select HAVE_DMA_API_DEBUG 23 select HAVE_DYNAMIC_FTRACE 24 select HAVE_FTRACE_MCOUNT_RECORD 25 select HAVE_FUNCTION_GRAPH_TRACER 26 select HAVE_FUNCTION_TRACER 27 select HAVE_MEMBLOCK 28 select HAVE_MEMBLOCK_NODE_MAP 29 select HAVE_OPROFILE 30 select IRQ_DOMAIN 31 select XILINX_INTC 32 select MODULES_USE_ELF_RELA 33 select OF 34 select OF_EARLY_FLATTREE 35 select TRACING_SUPPORT 36 select VIRT_TO_BUS 37 select CPU_NO_EFFICIENT_FFS 38 39config SWAP 40 def_bool n 41 42config RWSEM_GENERIC_SPINLOCK 43 def_bool y 44 45config ZONE_DMA 46 def_bool y 47 48config RWSEM_XCHGADD_ALGORITHM 49 bool 50 51config ARCH_HAS_ILOG2_U32 52 def_bool n 53 54config ARCH_HAS_ILOG2_U64 55 def_bool n 56 57config GENERIC_HWEIGHT 58 def_bool y 59 60config GENERIC_CALIBRATE_DELAY 61 def_bool y 62 63config GENERIC_CSUM 64 def_bool y 65 66config STACKTRACE_SUPPORT 67 def_bool y 68 69config LOCKDEP_SUPPORT 70 def_bool y 71 72source "init/Kconfig" 73 74source "kernel/Kconfig.freezer" 75 76source "arch/microblaze/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 88comment "Boot options" 89 90config CMDLINE_BOOL 91 bool "Default bootloader kernel arguments" 92 93config CMDLINE 94 string "Default kernel command string" 95 depends on CMDLINE_BOOL 96 default "console=ttyUL0,115200" 97 help 98 On some architectures there is currently no way for the boot loader 99 to pass arguments to the kernel. For these architectures, you should 100 supply some command-line options at build time by entering them 101 here. 102 103config CMDLINE_FORCE 104 bool "Force default kernel command string" 105 depends on CMDLINE_BOOL 106 default n 107 help 108 Set this to have arguments from the default kernel command string 109 override those passed by the boot loader. 110 111config SECCOMP 112 bool "Enable seccomp to safely compute untrusted bytecode" 113 depends on PROC_FS 114 default y 115 help 116 This kernel feature is useful for number crunching applications 117 that may need to compute untrusted bytecode during their 118 execution. By using pipes or other transports made available to 119 the process as file descriptors supporting the read/write 120 syscalls, it's possible to isolate those applications in 121 their own address space using seccomp. Once seccomp is 122 enabled via /proc/<pid>/seccomp, it cannot be disabled 123 and the task is only allowed to execute a few safe syscalls 124 defined by each seccomp mode. 125 126 If unsure, say Y. Only embedded should say N here. 127 128endmenu 129 130menu "Kernel features" 131 132config NR_CPUS 133 int 134 default "1" 135 136config ADVANCED_OPTIONS 137 bool "Prompt for advanced kernel configuration options" 138 help 139 This option will enable prompting for a variety of advanced kernel 140 configuration options. These options can cause the kernel to not 141 work if they are set incorrectly, but can be used to optimize certain 142 aspects of kernel memory management. 143 144 Unless you know what you are doing, say N here. 145 146comment "Default settings for advanced configuration options are used" 147 depends on !ADVANCED_OPTIONS 148 149config XILINX_UNCACHED_SHADOW 150 bool "Are you using uncached shadow for RAM ?" 151 depends on ADVANCED_OPTIONS && !MMU 152 default n 153 help 154 This is needed to be able to allocate uncachable memory regions. 155 The feature requires the design to define the RAM memory controller 156 window to be twice as large as the actual physical memory. 157 158config HIGHMEM 159 bool "High memory support" 160 depends on MMU 161 help 162 The address space of Microblaze processors is only 4 Gigabytes large 163 and it has to accommodate user address space, kernel address 164 space as well as some memory mapped IO. That means that, if you 165 have a large amount of physical memory and/or IO, not all of the 166 memory can be "permanently mapped" by the kernel. The physical 167 memory that is not permanently mapped is called "high memory". 168 169 If unsure, say n. 170 171config LOWMEM_SIZE_BOOL 172 bool "Set maximum low memory" 173 depends on ADVANCED_OPTIONS && MMU 174 help 175 This option allows you to set the maximum amount of memory which 176 will be used as "low memory", that is, memory which the kernel can 177 access directly, without having to set up a kernel virtual mapping. 178 This can be useful in optimizing the layout of kernel virtual 179 memory. 180 181 Say N here unless you know what you are doing. 182 183config LOWMEM_SIZE 184 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 185 default "0x30000000" 186 187config MANUAL_RESET_VECTOR 188 hex "Microblaze reset vector address setup" 189 default "0x0" 190 help 191 Set this option to have the kernel override the CPU Reset vector. 192 If zero, no change will be made to the MicroBlaze reset vector at 193 address 0x0. 194 If non-zero, a jump instruction to this address, will be written 195 to the reset vector at address 0x0. 196 If you are unsure, set it to default value 0x0. 197 198config KERNEL_START_BOOL 199 bool "Set custom kernel base address" 200 depends on ADVANCED_OPTIONS 201 help 202 This option allows you to set the kernel virtual address at which 203 the kernel will map low memory (the kernel image will be linked at 204 this address). This can be useful in optimizing the virtual memory 205 layout of the system. 206 207 Say N here unless you know what you are doing. 208 209config KERNEL_START 210 hex "Virtual address of kernel base" if KERNEL_START_BOOL 211 default "0xc0000000" if MMU 212 default KERNEL_BASE_ADDR if !MMU 213 214config TASK_SIZE_BOOL 215 bool "Set custom user task size" 216 depends on ADVANCED_OPTIONS && MMU 217 help 218 This option allows you to set the amount of virtual address space 219 allocated to user tasks. This can be useful in optimizing the 220 virtual memory layout of the system. 221 222 Say N here unless you know what you are doing. 223 224config TASK_SIZE 225 hex "Size of user task space" if TASK_SIZE_BOOL 226 default "0x80000000" 227 228choice 229 prompt "Page size" 230 default MICROBLAZE_4K_PAGES 231 depends on ADVANCED_OPTIONS && !MMU 232 help 233 Select the kernel logical page size. Increasing the page size 234 will reduce software overhead at each page boundary, allow 235 hardware prefetch mechanisms to be more effective, and allow 236 larger dma transfers increasing IO efficiency and reducing 237 overhead. However the utilization of memory will increase. 238 For example, each cached file will using a multiple of the 239 page size to hold its contents and the difference between the 240 end of file and the end of page is wasted. 241 242 If unsure, choose 4K_PAGES. 243 244config MICROBLAZE_4K_PAGES 245 bool "4k page size" 246 247config MICROBLAZE_16K_PAGES 248 bool "16k page size" 249 250config MICROBLAZE_64K_PAGES 251 bool "64k page size" 252 253endchoice 254 255source "mm/Kconfig" 256 257endmenu 258 259menu "Executable file formats" 260 261source "fs/Kconfig.binfmt" 262 263endmenu 264 265menu "Bus Options" 266 267config PCI 268 bool "PCI support" 269 270config PCI_DOMAINS 271 def_bool PCI 272 273config PCI_DOMAINS_GENERIC 274 def_bool PCI_DOMAINS 275 276config PCI_SYSCALL 277 def_bool PCI 278 279config PCI_XILINX 280 bool "Xilinx PCI host bridge support" 281 depends on PCI 282 283source "drivers/pci/Kconfig" 284 285endmenu 286 287source "net/Kconfig" 288 289source "drivers/Kconfig" 290 291source "fs/Kconfig" 292 293source "arch/microblaze/Kconfig.debug" 294 295source "security/Kconfig" 296 297source "crypto/Kconfig" 298 299source "lib/Kconfig" 300