1# SPDX-License-Identifier: GPL-2.0 2# 3# For a description of the syntax of this configuration file, 4# see Documentation/kbuild/kconfig-language.txt. 5# 6 7config OPENRISC 8 def_bool y 9 select OF 10 select OF_EARLY_FLATTREE 11 select IRQ_DOMAIN 12 select HANDLE_DOMAIN_IRQ 13 select HAVE_MEMBLOCK 14 select GPIOLIB 15 select HAVE_ARCH_TRACEHOOK 16 select SPARSE_IRQ 17 select GENERIC_IRQ_CHIP 18 select GENERIC_IRQ_PROBE 19 select GENERIC_IRQ_SHOW 20 select GENERIC_IOMAP 21 select GENERIC_CPU_DEVICES 22 select HAVE_UID16 23 select GENERIC_ATOMIC64 24 select GENERIC_CLOCKEVENTS 25 select GENERIC_STRNCPY_FROM_USER 26 select GENERIC_STRNLEN_USER 27 select MODULES_USE_ELF_RELA 28 select HAVE_DEBUG_STACKOVERFLOW 29 select OR1K_PIC 30 select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1 31 select NO_BOOTMEM 32 33config CPU_BIG_ENDIAN 34 def_bool y 35 36config MMU 37 def_bool y 38 39config RWSEM_GENERIC_SPINLOCK 40 def_bool y 41 42config RWSEM_XCHGADD_ALGORITHM 43 def_bool n 44 45config GENERIC_HWEIGHT 46 def_bool y 47 48config NO_IOPORT_MAP 49 def_bool y 50 51config TRACE_IRQFLAGS_SUPPORT 52 def_bool y 53 54# For now, use generic checksum functions 55#These can be reimplemented in assembly later if so inclined 56config GENERIC_CSUM 57 def_bool y 58 59source "init/Kconfig" 60 61source "kernel/Kconfig.freezer" 62 63menu "Processor type and features" 64 65choice 66 prompt "Subarchitecture" 67 default OR1K_1200 68 69config OR1K_1200 70 bool "OR1200" 71 help 72 Generic OpenRISC 1200 architecture 73 74endchoice 75 76config OPENRISC_BUILTIN_DTB 77 string "Builtin DTB" 78 default "" 79 80menu "Class II Instructions" 81 82config OPENRISC_HAVE_INST_FF1 83 bool "Have instruction l.ff1" 84 default y 85 help 86 Select this if your implementation has the Class II instruction l.ff1 87 88config OPENRISC_HAVE_INST_FL1 89 bool "Have instruction l.fl1" 90 default y 91 help 92 Select this if your implementation has the Class II instruction l.fl1 93 94config OPENRISC_HAVE_INST_MUL 95 bool "Have instruction l.mul for hardware multiply" 96 default y 97 help 98 Select this if your implementation has a hardware multiply instruction 99 100config OPENRISC_HAVE_INST_DIV 101 bool "Have instruction l.div for hardware divide" 102 default y 103 help 104 Select this if your implementation has a hardware divide instruction 105endmenu 106 107config NR_CPUS 108 int 109 default "1" 110 111source kernel/Kconfig.hz 112source kernel/Kconfig.preempt 113source "mm/Kconfig" 114 115config OPENRISC_NO_SPR_SR_DSX 116 bool "use SPR_SR_DSX software emulation" if OR1K_1200 117 default y 118 help 119 SPR_SR_DSX bit is status register bit indicating whether 120 the last exception has happened in delay slot. 121 122 OpenRISC architecture makes it optional to have it implemented 123 in hardware and the OR1200 does not have it. 124 125 Say N here if you know that your OpenRISC processor has 126 SPR_SR_DSX bit implemented. Say Y if you are unsure. 127 128config CMDLINE 129 string "Default kernel command string" 130 default "" 131 help 132 On some architectures there is currently no way for the boot loader 133 to pass arguments to the kernel. For these architectures, you should 134 supply some command-line options at build time by entering them 135 here. 136 137menu "Debugging options" 138 139config JUMP_UPON_UNHANDLED_EXCEPTION 140 bool "Try to die gracefully" 141 default y 142 help 143 Now this puts kernel into infinite loop after first oops. Till 144 your kernel crashes this doesn't have any influence. 145 146 Say Y if you are unsure. 147 148config OPENRISC_ESR_EXCEPTION_BUG_CHECK 149 bool "Check for possible ESR exception bug" 150 default n 151 help 152 This option enables some checks that might expose some problems 153 in kernel. 154 155 Say N if you are unsure. 156 157endmenu 158 159endmenu 160 161menu "Executable file formats" 162 163source "fs/Kconfig.binfmt" 164 165endmenu 166 167source "net/Kconfig" 168 169source "drivers/Kconfig" 170 171source "fs/Kconfig" 172 173source "security/Kconfig" 174 175source "crypto/Kconfig" 176 177source "lib/Kconfig" 178 179menu "Kernel hacking" 180 181source "lib/Kconfig.debug" 182 183endmenu 184