1# SPDX-License-Identifier: GPL-2.0-only 2config MICROBLAZE 3 def_bool y 4 select ARCH_32BIT_OFF_T 5 select ARCH_NO_SWAP 6 select ARCH_HAS_DMA_PREP_COHERENT 7 select ARCH_HAS_GCOV_PROFILE_ALL 8 select ARCH_HAS_SYNC_DMA_FOR_CPU 9 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 10 select ARCH_MIGHT_HAVE_PC_PARPORT 11 select ARCH_WANT_IPC_PARSE_VERSION 12 select BUILDTIME_TABLE_SORT 13 select TIMER_OF 14 select CLONE_BACKWARDS3 15 select COMMON_CLK 16 select DMA_DIRECT_REMAP 17 select GENERIC_ATOMIC64 18 select GENERIC_CLOCKEVENTS 19 select GENERIC_CPU_DEVICES 20 select GENERIC_IDLE_POLL_SETUP 21 select GENERIC_IRQ_PROBE 22 select GENERIC_IRQ_SHOW 23 select GENERIC_PCI_IOMAP 24 select GENERIC_SCHED_CLOCK 25 select HAVE_ARCH_HASH 26 select HAVE_ARCH_KGDB 27 select HAVE_ARCH_SECCOMP 28 select HAVE_DEBUG_KMEMLEAK 29 select HAVE_DMA_CONTIGUOUS 30 select HAVE_DYNAMIC_FTRACE 31 select HAVE_FTRACE_MCOUNT_RECORD 32 select HAVE_FUNCTION_GRAPH_TRACER 33 select HAVE_FUNCTION_TRACER 34 select HAVE_OPROFILE 35 select HAVE_PCI 36 select IRQ_DOMAIN 37 select XILINX_INTC 38 select MODULES_USE_ELF_RELA 39 select OF 40 select OF_EARLY_FLATTREE 41 select PCI_DOMAINS_GENERIC if PCI 42 select PCI_SYSCALL if PCI 43 select TRACING_SUPPORT 44 select VIRT_TO_BUS 45 select CPU_NO_EFFICIENT_FFS 46 select MMU_GATHER_NO_RANGE 47 select SPARSE_IRQ 48 select SET_FS 49 50# Endianness selection 51choice 52 prompt "Endianness selection" 53 default CPU_LITTLE_ENDIAN 54 help 55 microblaze architectures can be configured for either little or 56 big endian formats. Be sure to select the appropriate mode. 57 58config CPU_BIG_ENDIAN 59 bool "Big endian" 60 61config CPU_LITTLE_ENDIAN 62 bool "Little endian" 63 64endchoice 65 66config ZONE_DMA 67 def_bool y 68 69config ARCH_HAS_ILOG2_U32 70 def_bool n 71 72config ARCH_HAS_ILOG2_U64 73 def_bool n 74 75config GENERIC_HWEIGHT 76 def_bool y 77 78config GENERIC_CALIBRATE_DELAY 79 def_bool y 80 81config GENERIC_CSUM 82 def_bool y 83 84config STACKTRACE_SUPPORT 85 def_bool y 86 87config LOCKDEP_SUPPORT 88 def_bool y 89 90source "arch/microblaze/Kconfig.platform" 91 92menu "Processor type and features" 93 94source "kernel/Kconfig.hz" 95 96config MMU 97 def_bool y 98 99comment "Boot options" 100 101config CMDLINE_BOOL 102 bool "Default bootloader kernel arguments" 103 104config CMDLINE 105 string "Default kernel command string" 106 depends on CMDLINE_BOOL 107 default "console=ttyUL0,115200" 108 help 109 On some architectures there is currently no way for the boot loader 110 to pass arguments to the kernel. For these architectures, you should 111 supply some command-line options at build time by entering them 112 here. 113 114config CMDLINE_FORCE 115 bool "Force default kernel command string" 116 depends on CMDLINE_BOOL 117 default n 118 help 119 Set this to have arguments from the default kernel command string 120 override those passed by the boot loader. 121 122endmenu 123 124menu "Kernel features" 125 126config NR_CPUS 127 int 128 default "1" 129 130config ADVANCED_OPTIONS 131 bool "Prompt for advanced kernel configuration options" 132 help 133 This option will enable prompting for a variety of advanced kernel 134 configuration options. These options can cause the kernel to not 135 work if they are set incorrectly, but can be used to optimize certain 136 aspects of kernel memory management. 137 138 Unless you know what you are doing, say N here. 139 140comment "Default settings for advanced configuration options are used" 141 depends on !ADVANCED_OPTIONS 142 143config HIGHMEM 144 bool "High memory support" 145 help 146 The address space of Microblaze processors is only 4 Gigabytes large 147 and it has to accommodate user address space, kernel address 148 space as well as some memory mapped IO. That means that, if you 149 have a large amount of physical memory and/or IO, not all of the 150 memory can be "permanently mapped" by the kernel. The physical 151 memory that is not permanently mapped is called "high memory". 152 153 If unsure, say n. 154 155config LOWMEM_SIZE_BOOL 156 bool "Set maximum low memory" 157 depends on ADVANCED_OPTIONS 158 help 159 This option allows you to set the maximum amount of memory which 160 will be used as "low memory", that is, memory which the kernel can 161 access directly, without having to set up a kernel virtual mapping. 162 This can be useful in optimizing the layout of kernel virtual 163 memory. 164 165 Say N here unless you know what you are doing. 166 167config LOWMEM_SIZE 168 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL 169 default "0x30000000" 170 171config MANUAL_RESET_VECTOR 172 hex "Microblaze reset vector address setup" 173 default "0x0" 174 help 175 Set this option to have the kernel override the CPU Reset vector. 176 If zero, no change will be made to the MicroBlaze reset vector at 177 address 0x0. 178 If non-zero, a jump instruction to this address, will be written 179 to the reset vector at address 0x0. 180 If you are unsure, set it to default value 0x0. 181 182config KERNEL_START_BOOL 183 bool "Set custom kernel base address" 184 depends on ADVANCED_OPTIONS 185 help 186 This option allows you to set the kernel virtual address at which 187 the kernel will map low memory (the kernel image will be linked at 188 this address). This can be useful in optimizing the virtual memory 189 layout of the system. 190 191 Say N here unless you know what you are doing. 192 193config KERNEL_START 194 hex "Virtual address of kernel base" if KERNEL_START_BOOL 195 default "0xc0000000" 196 197config TASK_SIZE_BOOL 198 bool "Set custom user task size" 199 depends on ADVANCED_OPTIONS 200 help 201 This option allows you to set the amount of virtual address space 202 allocated to user tasks. This can be useful in optimizing the 203 virtual memory layout of the system. 204 205 Say N here unless you know what you are doing. 206 207config TASK_SIZE 208 hex "Size of user task space" if TASK_SIZE_BOOL 209 default "0x80000000" 210 211endmenu 212 213menu "Bus Options" 214 215config PCI_XILINX 216 bool "Xilinx PCI host bridge support" 217 depends on PCI 218 219endmenu 220