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 $(cc-option,-fpatchable-function-entry=1,1)
79 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
80 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
81 select HAVE_KPROBES_ON_FTRACE
82 select HAVE_DYNAMIC_FTRACE_WITH_REGS
83 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
84 select TRACE_IRQFLAGS_SUPPORT
85 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
88 The PA-RISC microprocessor is designed by Hewlett-Packard and used
89 in many of their workstations & servers (HP9000 700 and 800 series,
90 and later HP3000 series). The PA-RISC Linux project home page is
91 at <https://parisc.wiki.kernel.org>.
102 config GENERIC_LOCKBREAK
105 depends on SMP && PREEMPTION
107 config ARCH_HAS_ILOG2_U32
111 config ARCH_HAS_ILOG2_U64
120 config GENERIC_HWEIGHT
124 config GENERIC_CALIBRATE_DELAY
133 config ARCH_MMAP_RND_BITS_MIN
137 config ARCH_MMAP_RND_COMPAT_BITS_MIN
140 config ARCH_MMAP_RND_BITS_MAX
144 config ARCH_MMAP_RND_COMPAT_BITS_MAX
147 # unless you want to implement ACPI on PA-RISC ... ;-)
151 config STACKTRACE_SUPPORT
154 config LOCKDEP_SUPPORT
161 config ARCH_MAY_HAVE_PC_FDC
166 config PGTABLE_LEVELS
168 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
171 menu "Processor type and features"
174 prompt "Processor type"
175 default PA7000 if "$(ARCH)" = "parisc"
178 bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
180 This is the processor type of your CPU. This information is
181 used for optimizing purposes. In order to compile a kernel
182 that can run on all 32-bit PA CPUs (albeit not optimally fast),
183 you can specify "PA7000" here.
185 Specifying "PA8000" here will allow you to select a 64-bit kernel
186 which is required on some machines.
189 bool "PA7100LC" if "$(ARCH)" = "parisc"
191 Select this option for the PCX-L processor, as used in the
192 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
193 D200, D210, D300, D310 and E-class
196 bool "PA7200" if "$(ARCH)" = "parisc"
198 Select this option for the PCX-T' processor, as used in the
199 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
200 K100, K200, K210, K220, K400, K410 and K420
203 bool "PA7300LC" if "$(ARCH)" = "parisc"
205 Select this option for the PCX-L2 processor, as used in the
206 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
207 D220, D230, D320 and D330.
212 Select this option for PCX-U to PCX-W2 processors.
216 # Define implied options from the CPU selection here
224 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
225 select ARCH_HAS_SYNC_DMA_FOR_CPU
226 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
230 depends on PA8X00 || PA7200
232 config PARISC_HUGE_KERNEL
233 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
236 def_bool y if PARISC_HUGE_KERNEL
237 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
240 If you configure the kernel to include many drivers built-in instead
241 as modules, the kernel executable may become too big, so that the
242 linker will not be able to resolve some long branches and fails to link
243 your vmlinux kernel. In that case enabling this option will help you
244 to overcome this limit by using the -mlong-calls compiler option.
246 Usually you want to say N here, unless you e.g. want to build
247 a kernel which includes all necessary drivers built-in and which can
248 be used for TFTP booting without the need to have an initrd ramdisk.
250 Enabling this option will probably slow down your kernel.
253 def_bool y if "$(ARCH)" = "parisc64"
254 bool "64-bit kernel" if "$(ARCH)" = "parisc"
257 Enable this if you want to support 64bit kernel on PA-RISC platform.
259 At the moment, only people willing to use more than 2GB of RAM,
260 or having a 64bit-only capable PA-RISC machine should say Y here.
262 Since there is no 64bit userland on PA-RISC, there is no point to
263 enable this option otherwise. The 64bit kernel is significantly bigger
264 and slower than the 32bit one.
267 prompt "Kernel page size"
268 default PARISC_PAGE_SIZE_4KB
270 config PARISC_PAGE_SIZE_4KB
273 This lets you select the page size of the kernel. For best
274 performance, a page size of 16KB is recommended. For best
275 compatibility with 32bit applications, a page size of 4KB should be
276 selected (the vast majority of 32bit binaries work perfectly fine
277 with a larger page size).
279 4KB For best 32bit compatibility
280 16KB For best performance
281 64KB For best performance, might give more overhead.
283 If you don't know what to do, choose 4KB.
285 config PARISC_PAGE_SIZE_16KB
287 depends on PA8X00 && BROKEN && !KFENCE
289 config PARISC_PAGE_SIZE_64KB
291 depends on PA8X00 && BROKEN && !KFENCE
296 bool "Symmetric multi-processing support"
298 This enables support for systems with more than one CPU. If you have
299 a system with only one CPU, say N. If you have a system with more
302 If you say N here, the kernel will run on uni- and multiprocessor
303 machines, but will use only one CPU of a multiprocessor machine.
304 On a uniprocessor machine, the kernel will run faster if you say N.
306 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
307 available at <https://www.tldp.org/docs.html#howto>.
309 If you don't know what to do here, say N.
312 bool "Multi-core scheduler support"
313 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
315 Multi-core scheduler support improves the CPU scheduler's decision
316 making when dealing with multi-core CPU chips at a cost of slightly
317 increased overhead in some places. If unsure say N here.
320 bool "Use separate kernel stacks when processing interrupts"
323 If you say Y here the kernel will use separate kernel stacks
324 for handling hard and soft interrupts. This can help avoid
325 overflowing the process kernel stacks.
331 config ARCH_SELECT_MEMORY_MODEL
335 config ARCH_SPARSEMEM_ENABLE
339 config ARCH_FLATMEM_ENABLE
342 config ARCH_SPARSEMEM_DEFAULT
344 depends on ARCH_SPARSEMEM_ENABLE
346 source "kernel/Kconfig.hz"
356 int "Maximum number of CPUs (2-32)"
364 config ARCH_SUPPORTS_KEXEC
367 config ARCH_SUPPORTS_KEXEC_FILE
370 config ARCH_SELECTS_KEXEC_FILE
372 depends on KEXEC_FILE
375 source "drivers/parisc/Kconfig"