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