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 GENERIC_IOREMAP
40 select ARCH_HAVE_NMI_SAFE_CMPXCHG
41 select GENERIC_SMP_IDLE_THREAD
42 select GENERIC_ARCH_TOPOLOGY if SMP
43 select GENERIC_CPU_DEVICES if !SMP
44 select GENERIC_LIB_DEVMEM_IS_ALLOWED
45 select SYSCTL_ARCH_UNALIGN_ALLOW
46 select SYSCTL_EXCEPTION_TRACE
47 select HAVE_MOD_ARCH_SPECIFIC
48 select MODULES_USE_ELF_RELA
49 select CLONE_BACKWARDS
50 select TTY # Needed for pdc_cons.c
51 select HAS_IOPORT if PCI || EISA
52 select HAVE_DEBUG_STACKOVERFLOW
53 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
54 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
55 select HAVE_ARCH_MMAP_RND_BITS
56 select HAVE_ARCH_AUDITSYSCALL
58 select HAVE_ARCH_JUMP_LABEL
59 select HAVE_ARCH_JUMP_LABEL_RELATIVE
60 select HAVE_ARCH_KFENCE
61 select HAVE_ARCH_SECCOMP_FILTER
62 select HAVE_ARCH_TRACEHOOK
64 select ARCH_WANT_DEFAULT_BPF_JIT
65 select HAVE_REGS_AND_STACK_ACCESS_API
66 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
67 select GENERIC_SCHED_CLOCK
68 select GENERIC_IRQ_MIGRATION if SMP
69 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
70 select LEGACY_TIMER_TICK
71 select CPU_NO_EFFICIENT_FFS
72 select THREAD_INFO_IN_TASK
73 select NEED_DMA_MAP_STATE
74 select NEED_SG_DMA_LENGTH
77 select HAVE_KRETPROBES
78 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
79 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
80 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
81 select HAVE_KPROBES_ON_FTRACE
82 select HAVE_DYNAMIC_FTRACE_WITH_REGS
83 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
84 select TRACE_IRQFLAGS_SUPPORT
85 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
88 The PA-RISC microprocessor is designed by Hewlett-Packard and used
89 in many of their workstations & servers (HP9000 700 and 800 series,
90 and later HP3000 series). The PA-RISC Linux project home page is
91 at <https://parisc.wiki.kernel.org>.
102 config GENERIC_LOCKBREAK
105 depends on SMP && PREEMPTION
107 config ARCH_HAS_ILOG2_U32
111 config ARCH_HAS_ILOG2_U64
118 select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
120 config GENERIC_BUG_RELATIVE_POINTERS
123 config GENERIC_HWEIGHT
127 config GENERIC_CALIBRATE_DELAY
136 config ARCH_MMAP_RND_BITS_MIN
140 config ARCH_MMAP_RND_COMPAT_BITS_MIN
143 config ARCH_MMAP_RND_BITS_MAX
147 config ARCH_MMAP_RND_COMPAT_BITS_MAX
150 # unless you want to implement ACPI on PA-RISC ... ;-)
154 config STACKTRACE_SUPPORT
157 config LOCKDEP_SUPPORT
164 config ARCH_MAY_HAVE_PC_FDC
169 config PGTABLE_LEVELS
171 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
174 menu "Processor type and features"
177 prompt "Processor type"
178 default PA7000 if "$(ARCH)" = "parisc"
181 bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
183 This is the processor type of your CPU. This information is
184 used for optimizing purposes. In order to compile a kernel
185 that can run on all 32-bit PA CPUs (albeit not optimally fast),
186 you can specify "PA7000" here.
188 Specifying "PA8000" here will allow you to select a 64-bit kernel
189 which is required on some machines.
192 bool "PA7100LC" if "$(ARCH)" = "parisc"
194 Select this option for the PCX-L processor, as used in the
195 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
196 D200, D210, D300, D310 and E-class
199 bool "PA7200" if "$(ARCH)" = "parisc"
201 Select this option for the PCX-T' processor, as used in the
202 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
203 K100, K200, K210, K220, K400, K410 and K420
206 bool "PA7300LC" if "$(ARCH)" = "parisc"
208 Select this option for the PCX-L2 processor, as used in the
209 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
210 D220, D230, D320 and D330.
215 Select this option for PCX-U to PCX-W2 processors.
219 # Define implied options from the CPU selection here
227 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
228 select ARCH_HAS_SYNC_DMA_FOR_CPU
229 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
233 depends on PA8X00 || PA7200
235 config PARISC_HUGE_KERNEL
236 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
239 def_bool y if PARISC_HUGE_KERNEL
240 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
243 If you configure the kernel to include many drivers built-in instead
244 as modules, the kernel executable may become too big, so that the
245 linker will not be able to resolve some long branches and fails to link
246 your vmlinux kernel. In that case enabling this option will help you
247 to overcome this limit by using the -mlong-calls compiler option.
249 Usually you want to say N here, unless you e.g. want to build
250 a kernel which includes all necessary drivers built-in and which can
251 be used for TFTP booting without the need to have an initrd ramdisk.
253 Enabling this option will probably slow down your kernel.
256 def_bool y if "$(ARCH)" = "parisc64"
257 bool "64-bit kernel" if "$(ARCH)" = "parisc"
260 Enable this if you want to support 64bit kernel on PA-RISC platform.
262 At the moment, only people willing to use more than 2GB of RAM,
263 or having a 64bit-only capable PA-RISC machine should say Y here.
265 Since there is no 64bit userland on PA-RISC, there is no point to
266 enable this option otherwise. The 64bit kernel is significantly bigger
267 and slower than the 32bit one.
270 prompt "Kernel page size"
271 default PARISC_PAGE_SIZE_4KB
273 config PARISC_PAGE_SIZE_4KB
276 This lets you select the page size of the kernel. For best
277 performance, a page size of 16KB is recommended. For best
278 compatibility with 32bit applications, a page size of 4KB should be
279 selected (the vast majority of 32bit binaries work perfectly fine
280 with a larger page size).
282 4KB For best 32bit compatibility
283 16KB For best performance
284 64KB For best performance, might give more overhead.
286 If you don't know what to do, choose 4KB.
288 config PARISC_PAGE_SIZE_16KB
290 depends on PA8X00 && BROKEN && !KFENCE
292 config PARISC_PAGE_SIZE_64KB
294 depends on PA8X00 && BROKEN && !KFENCE
299 bool "Symmetric multi-processing support"
301 This enables support for systems with more than one CPU. If you have
302 a system with only one CPU, say N. If you have a system with more
305 If you say N here, the kernel will run on uni- and multiprocessor
306 machines, but will use only one CPU of a multiprocessor machine.
307 On a uniprocessor machine, the kernel will run faster if you say N.
309 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
310 available at <https://www.tldp.org/docs.html#howto>.
312 If you don't know what to do here, say N.
315 bool "Multi-core scheduler support"
316 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
318 Multi-core scheduler support improves the CPU scheduler's decision
319 making when dealing with multi-core CPU chips at a cost of slightly
320 increased overhead in some places. If unsure say N here.
323 bool "Use separate kernel stacks when processing interrupts"
326 If you say Y here the kernel will use separate kernel stacks
327 for handling hard and soft interrupts. This can help avoid
328 overflowing the process kernel stacks.
334 config ARCH_SELECT_MEMORY_MODEL
338 config ARCH_SPARSEMEM_ENABLE
342 config ARCH_FLATMEM_ENABLE
345 config ARCH_SPARSEMEM_DEFAULT
347 depends on ARCH_SPARSEMEM_ENABLE
349 source "kernel/Kconfig.hz"
359 int "Maximum number of CPUs (2-32)"
367 config ARCH_SUPPORTS_KEXEC
370 config ARCH_SUPPORTS_KEXEC_FILE
373 config ARCH_SELECTS_KEXEC_FILE
375 depends on KEXEC_FILE
378 source "drivers/parisc/Kconfig"