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_CPU_CACHE_ALIASING
12 select ARCH_HAS_DMA_ALLOC if PA11
13 select ARCH_HAS_ELF_RANDOMIZE
14 select ARCH_HAS_STRICT_KERNEL_RWX
15 select ARCH_HAS_STRICT_MODULE_RWX
16 select ARCH_HAS_UBSAN_SANITIZE_ALL
17 select ARCH_HAS_PTE_SPECIAL
18 select ARCH_NO_SG_CHAIN
19 select ARCH_SUPPORTS_HUGETLBFS if PA20
20 select ARCH_SUPPORTS_MEMORY_FAILURE
22 select ARCH_HAS_DEBUG_VM_PGTABLE
23 select HAVE_RELIABLE_STACKTRACE
26 select RTC_DRV_GENERIC
27 select INIT_ALL_POSSIBLE
29 select HAVE_KERNEL_UNCOMPRESSED
31 select HAVE_PERF_EVENTS
32 select HAVE_KERNEL_BZIP2
33 select HAVE_KERNEL_GZIP
34 select HAVE_KERNEL_LZ4
35 select HAVE_KERNEL_LZMA
36 select HAVE_KERNEL_LZO
38 select GENERIC_ATOMIC64 if !64BIT
39 select GENERIC_IRQ_PROBE
40 select GENERIC_PCI_IOMAP
41 select GENERIC_IOREMAP
42 select ARCH_HAVE_NMI_SAFE_CMPXCHG
43 select GENERIC_SMP_IDLE_THREAD
44 select GENERIC_ARCH_TOPOLOGY if SMP
45 select GENERIC_CPU_DEVICES if !SMP
46 select GENERIC_LIB_DEVMEM_IS_ALLOWED
47 select SYSCTL_ARCH_UNALIGN_ALLOW
48 select SYSCTL_EXCEPTION_TRACE
49 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_RELA
51 select CLONE_BACKWARDS
52 select TTY # Needed for pdc_cons.c
53 select HAS_IOPORT if PCI || EISA
54 select HAVE_DEBUG_STACKOVERFLOW
55 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
56 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
57 select HAVE_ARCH_MMAP_RND_BITS
58 select HAVE_ARCH_AUDITSYSCALL
60 select HAVE_ARCH_JUMP_LABEL
61 select HAVE_ARCH_JUMP_LABEL_RELATIVE
62 select HAVE_ARCH_KFENCE
63 select HAVE_ARCH_SECCOMP_FILTER
64 select HAVE_ARCH_TRACEHOOK
66 select ARCH_WANT_DEFAULT_BPF_JIT
67 select HAVE_REGS_AND_STACK_ACCESS_API
68 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
69 select GENERIC_SCHED_CLOCK
70 select GENERIC_IRQ_MIGRATION if SMP
71 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
72 select LEGACY_TIMER_TICK
73 select CPU_NO_EFFICIENT_FFS
74 select THREAD_INFO_IN_TASK
75 select NEED_DMA_MAP_STATE
76 select NEED_SG_DMA_LENGTH
79 select HAVE_KRETPROBES
80 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
81 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
82 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
83 select HAVE_KPROBES_ON_FTRACE
84 select HAVE_DYNAMIC_FTRACE_WITH_REGS
85 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
86 select TRACE_IRQFLAGS_SUPPORT
87 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
90 The PA-RISC microprocessor is designed by Hewlett-Packard and used
91 in many of their workstations & servers (HP9000 700 and 800 series,
92 and later HP3000 series). The PA-RISC Linux project home page is
93 at <https://parisc.wiki.kernel.org>.
104 config GENERIC_LOCKBREAK
107 depends on SMP && PREEMPTION
109 config ARCH_HAS_ILOG2_U32
113 config ARCH_HAS_ILOG2_U64
120 select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
122 config GENERIC_BUG_RELATIVE_POINTERS
125 config GENERIC_HWEIGHT
129 config GENERIC_CALIBRATE_DELAY
138 config ARCH_MMAP_RND_BITS_MIN
142 config ARCH_MMAP_RND_COMPAT_BITS_MIN
145 config ARCH_MMAP_RND_BITS_MAX
149 config ARCH_MMAP_RND_COMPAT_BITS_MAX
152 # unless you want to implement ACPI on PA-RISC ... ;-)
156 config STACKTRACE_SUPPORT
159 config LOCKDEP_SUPPORT
166 config ARCH_MAY_HAVE_PC_FDC
171 config PGTABLE_LEVELS
173 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
176 menu "Processor type and features"
179 prompt "Processor type"
180 default PA7000 if "$(ARCH)" = "parisc"
183 bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
185 This is the processor type of your CPU. This information is
186 used for optimizing purposes. In order to compile a kernel
187 that can run on all 32-bit PA CPUs (albeit not optimally fast),
188 you can specify "PA7000" here.
190 Specifying "PA8000" here will allow you to select a 64-bit kernel
191 which is required on some machines.
194 bool "PA7100LC" if "$(ARCH)" = "parisc"
196 Select this option for the PCX-L processor, as used in the
197 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
198 D200, D210, D300, D310 and E-class
201 bool "PA7200" if "$(ARCH)" = "parisc"
203 Select this option for the PCX-T' processor, as used in the
204 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
205 K100, K200, K210, K220, K400, K410 and K420
208 bool "PA7300LC" if "$(ARCH)" = "parisc"
210 Select this option for the PCX-L2 processor, as used in the
211 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
212 D220, D230, D320 and D330.
217 Select this option for PCX-U to PCX-W2 processors.
221 # Define implied options from the CPU selection here
229 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
230 select ARCH_HAS_SYNC_DMA_FOR_CPU
231 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
235 depends on PA8X00 || PA7200
237 config PARISC_HUGE_KERNEL
238 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
241 def_bool y if PARISC_HUGE_KERNEL
242 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
245 If you configure the kernel to include many drivers built-in instead
246 as modules, the kernel executable may become too big, so that the
247 linker will not be able to resolve some long branches and fails to link
248 your vmlinux kernel. In that case enabling this option will help you
249 to overcome this limit by using the -mlong-calls compiler option.
251 Usually you want to say N here, unless you e.g. want to build
252 a kernel which includes all necessary drivers built-in and which can
253 be used for TFTP booting without the need to have an initrd ramdisk.
255 Enabling this option will probably slow down your kernel.
258 def_bool y if "$(ARCH)" = "parisc64"
259 bool "64-bit kernel" if "$(ARCH)" = "parisc"
262 Enable this if you want to support 64bit kernel on PA-RISC platform.
264 At the moment, only people willing to use more than 2GB of RAM,
265 or having a 64bit-only capable PA-RISC machine should say Y here.
267 Since there is no 64bit userland on PA-RISC, there is no point to
268 enable this option otherwise. The 64bit kernel is significantly bigger
269 and slower than the 32bit one.
272 prompt "Kernel page size"
273 default PARISC_PAGE_SIZE_4KB
275 config PARISC_PAGE_SIZE_4KB
278 This lets you select the page size of the kernel. For best
279 performance, a page size of 16KB is recommended. For best
280 compatibility with 32bit applications, a page size of 4KB should be
281 selected (the vast majority of 32bit binaries work perfectly fine
282 with a larger page size).
284 4KB For best 32bit compatibility
285 16KB For best performance
286 64KB For best performance, might give more overhead.
288 If you don't know what to do, choose 4KB.
290 config PARISC_PAGE_SIZE_16KB
292 depends on PA8X00 && BROKEN && !KFENCE
294 config PARISC_PAGE_SIZE_64KB
296 depends on PA8X00 && BROKEN && !KFENCE
301 bool "Symmetric multi-processing support"
303 This enables support for systems with more than one CPU. If you have
304 a system with only one CPU, say N. If you have a system with more
307 If you say N here, the kernel will run on uni- and multiprocessor
308 machines, but will use only one CPU of a multiprocessor machine.
309 On a uniprocessor machine, the kernel will run faster if you say N.
311 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
312 available at <https://www.tldp.org/docs.html#howto>.
314 If you don't know what to do here, say N.
317 bool "Multi-core scheduler support"
318 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
320 Multi-core scheduler support improves the CPU scheduler's decision
321 making when dealing with multi-core CPU chips at a cost of slightly
322 increased overhead in some places. If unsure say N here.
325 bool "Use separate kernel stacks when processing interrupts"
328 If you say Y here the kernel will use separate kernel stacks
329 for handling hard and soft interrupts. This can help avoid
330 overflowing the process kernel stacks.
336 config ARCH_SELECT_MEMORY_MODEL
340 config ARCH_SPARSEMEM_ENABLE
344 config ARCH_FLATMEM_ENABLE
347 config ARCH_SPARSEMEM_DEFAULT
349 depends on ARCH_SPARSEMEM_ENABLE
351 source "kernel/Kconfig.hz"
361 int "Maximum number of CPUs (2-32)"
369 config ARCH_SUPPORTS_KEXEC
372 config ARCH_SUPPORTS_KEXEC_FILE
375 config ARCH_SELECTS_KEXEC_FILE
377 depends on KEXEC_FILE
380 source "drivers/parisc/Kconfig"