1 # SPDX-License-Identifier: GPL-2.0
4 select ALTERNATE_USER_ADDRESS_SPACE
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select HAVE_FUNCTION_TRACER
8 select HAVE_FUNCTION_GRAPH_TRACER
9 select HAVE_SYSCALL_TRACEPOINTS
10 select ARCH_WANT_FRAME_POINTERS
11 select ARCH_HAS_ELF_RANDOMIZE
12 select ARCH_HAS_STRICT_KERNEL_RWX
13 select ARCH_HAS_STRICT_MODULE_RWX
14 select ARCH_HAS_UBSAN_SANITIZE_ALL
15 select ARCH_HAS_PTE_SPECIAL
16 select ARCH_NO_SG_CHAIN
17 select ARCH_SUPPORTS_HUGETLBFS if PA20
18 select ARCH_SUPPORTS_MEMORY_FAILURE
20 select ARCH_HAS_DEBUG_VM_PGTABLE
21 select HAVE_RELIABLE_STACKTRACE
24 select RTC_DRV_GENERIC
25 select INIT_ALL_POSSIBLE
27 select BUILDTIME_TABLE_SORT
29 select HAVE_PERF_EVENTS
30 select HAVE_KERNEL_BZIP2
31 select HAVE_KERNEL_GZIP
32 select HAVE_KERNEL_LZ4
33 select HAVE_KERNEL_LZMA
34 select HAVE_KERNEL_LZO
36 select GENERIC_ATOMIC64 if !64BIT
37 select GENERIC_IRQ_PROBE
38 select GENERIC_PCI_IOMAP
39 select ARCH_HAVE_NMI_SAFE_CMPXCHG
40 select GENERIC_SMP_IDLE_THREAD
41 select GENERIC_ARCH_TOPOLOGY if SMP
42 select GENERIC_CPU_DEVICES if !SMP
43 select GENERIC_LIB_DEVMEM_IS_ALLOWED
44 select SYSCTL_ARCH_UNALIGN_ALLOW
45 select SYSCTL_EXCEPTION_TRACE
46 select HAVE_MOD_ARCH_SPECIFIC
47 select MODULES_USE_ELF_RELA
48 select CLONE_BACKWARDS
49 select TTY # Needed for pdc_cons.c
50 select HAVE_DEBUG_STACKOVERFLOW
51 select HAVE_ARCH_AUDITSYSCALL
53 select HAVE_ARCH_JUMP_LABEL
54 select HAVE_ARCH_JUMP_LABEL_RELATIVE
55 select HAVE_ARCH_KFENCE
56 select HAVE_ARCH_SECCOMP_FILTER
57 select HAVE_ARCH_TRACEHOOK
58 select HAVE_REGS_AND_STACK_ACCESS_API
59 select GENERIC_SCHED_CLOCK
60 select GENERIC_IRQ_MIGRATION if SMP
61 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
62 select LEGACY_TIMER_TICK
63 select CPU_NO_EFFICIENT_FFS
64 select THREAD_INFO_IN_TASK
65 select NEED_DMA_MAP_STATE
66 select NEED_SG_DMA_LENGTH
69 select HAVE_KRETPROBES
70 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
71 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
72 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
73 select HAVE_KPROBES_ON_FTRACE
74 select HAVE_DYNAMIC_FTRACE_WITH_REGS
75 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
76 select TRACE_IRQFLAGS_SUPPORT
77 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
80 The PA-RISC microprocessor is designed by Hewlett-Packard and used
81 in many of their workstations & servers (HP9000 700 and 800 series,
82 and later HP3000 series). The PA-RISC Linux project home page is
83 at <https://parisc.wiki.kernel.org>.
94 config GENERIC_LOCKBREAK
97 depends on SMP && PREEMPTION
99 config ARCH_HAS_ILOG2_U32
103 config ARCH_HAS_ILOG2_U64
112 config GENERIC_HWEIGHT
116 config GENERIC_CALIBRATE_DELAY
125 # unless you want to implement ACPI on PA-RISC ... ;-)
129 config STACKTRACE_SUPPORT
135 config ARCH_MAY_HAVE_PC_FDC
140 config PGTABLE_LEVELS
142 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
145 menu "Processor type and features"
148 prompt "Processor type"
154 This is the processor type of your CPU. This information is
155 used for optimizing purposes. In order to compile a kernel
156 that can run on all 32-bit PA CPUs (albeit not optimally fast),
157 you can specify "PA7000" here.
159 Specifying "PA8000" here will allow you to select a 64-bit kernel
160 which is required on some machines.
165 Select this option for the PCX-L processor, as used in the
166 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
167 D200, D210, D300, D310 and E-class
172 Select this option for the PCX-T' processor, as used in the
173 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
174 K100, K200, K210, K220, K400, K410 and K420
179 Select this option for the PCX-L2 processor, as used in the
180 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
181 D220, D230, D320 and D330.
186 Select this option for PCX-U to PCX-W2 processors.
190 # Define implied options from the CPU selection here
198 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
199 select ARCH_HAS_SYNC_DMA_FOR_CPU
200 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
204 depends on PA8X00 || PA7200
206 config PARISC_HUGE_KERNEL
207 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
210 def_bool y if PARISC_HUGE_KERNEL
211 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
214 If you configure the kernel to include many drivers built-in instead
215 as modules, the kernel executable may become too big, so that the
216 linker will not be able to resolve some long branches and fails to link
217 your vmlinux kernel. In that case enabling this option will help you
218 to overcome this limit by using the -mlong-calls compiler option.
220 Usually you want to say N here, unless you e.g. want to build
221 a kernel which includes all necessary drivers built-in and which can
222 be used for TFTP booting without the need to have an initrd ramdisk.
224 Enabling this option will probably slow down your kernel.
230 Enable this if you want to support 64bit kernel on PA-RISC platform.
232 At the moment, only people willing to use more than 2GB of RAM,
233 or having a 64bit-only capable PA-RISC machine should say Y here.
235 Since there is no 64bit userland on PA-RISC, there is no point to
236 enable this option otherwise. The 64bit kernel is significantly bigger
237 and slower than the 32bit one.
240 prompt "Kernel page size"
241 default PARISC_PAGE_SIZE_4KB
243 config PARISC_PAGE_SIZE_4KB
246 This lets you select the page size of the kernel. For best
247 performance, a page size of 16KB is recommended. For best
248 compatibility with 32bit applications, a page size of 4KB should be
249 selected (the vast majority of 32bit binaries work perfectly fine
250 with a larger page size).
252 4KB For best 32bit compatibility
253 16KB For best performance
254 64KB For best performance, might give more overhead.
256 If you don't know what to do, choose 4KB.
258 config PARISC_PAGE_SIZE_16KB
260 depends on PA8X00 && BROKEN && !KFENCE
262 config PARISC_PAGE_SIZE_64KB
264 depends on PA8X00 && BROKEN && !KFENCE
269 bool "Symmetric multi-processing support"
271 This enables support for systems with more than one CPU. If you have
272 a system with only one CPU, say N. If you have a system with more
275 If you say N here, the kernel will run on uni- and multiprocessor
276 machines, but will use only one CPU of a multiprocessor machine.
277 On a uniprocessor machine, the kernel will run faster if you say N.
279 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
280 available at <https://www.tldp.org/docs.html#howto>.
282 If you don't know what to do here, say N.
285 bool "Multi-core scheduler support"
286 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
288 Multi-core scheduler support improves the CPU scheduler's decision
289 making when dealing with multi-core CPU chips at a cost of slightly
290 increased overhead in some places. If unsure say N here.
293 bool "Use separate kernel stacks when processing interrupts"
296 If you say Y here the kernel will use separate kernel stacks
297 for handling hard and soft interrupts. This can help avoid
298 overflowing the process kernel stacks.
301 bool "Use page table locks in TLB fault handler"
305 Select this option to enable page table locking in the TLB
306 fault handler. This ensures that page table entries are
307 updated consistently on SMP machines at the expense of some
314 config ARCH_SELECT_MEMORY_MODEL
318 config ARCH_SPARSEMEM_ENABLE
322 config ARCH_FLATMEM_ENABLE
325 config ARCH_SPARSEMEM_DEFAULT
327 depends on ARCH_SPARSEMEM_ENABLE
329 source "kernel/Kconfig.hz"
339 int "Maximum number of CPUs (2-32)"
346 bool "Kexec system call"
349 kexec is a system call that implements the ability to shutdown your
350 current kernel, and to start another kernel. It is like a reboot
351 but it is independent of the system firmware. And like a reboot
352 you can start any kernel with it, not just Linux.
354 It is an ongoing process to be certain the hardware in a machine
355 shutdown, so do not be surprised if this code does not
356 initially work for you.
359 bool "kexec file based system call"
363 This enables the kexec_file_load() System call. This is
364 file based and takes file descriptors as system call argument
365 for kernel and initramfs as opposed to list of segments as
366 accepted by previous system call.
370 source "drivers/parisc/Kconfig"