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_DMA_ALLOC if PA11
12 select ARCH_HAS_ELF_RANDOMIZE
13 select ARCH_HAS_STRICT_KERNEL_RWX
14 select ARCH_HAS_STRICT_MODULE_RWX
15 select ARCH_HAS_UBSAN_SANITIZE_ALL
16 select ARCH_HAS_PTE_SPECIAL
17 select ARCH_NO_SG_CHAIN
18 select ARCH_SUPPORTS_HUGETLBFS if PA20
19 select ARCH_SUPPORTS_MEMORY_FAILURE
21 select ARCH_HAS_DEBUG_VM_PGTABLE
22 select HAVE_RELIABLE_STACKTRACE
25 select RTC_DRV_GENERIC
26 select INIT_ALL_POSSIBLE
28 select BUILDTIME_TABLE_SORT
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 $(cc-option,-fpatchable-function-entry=1,1)
81 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
82 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
83 select HAVE_KPROBES_ON_FTRACE
84 select HAVE_DYNAMIC_FTRACE_WITH_REGS
85 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
86 select TRACE_IRQFLAGS_SUPPORT
87 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
90 The PA-RISC microprocessor is designed by Hewlett-Packard and used
91 in many of their workstations & servers (HP9000 700 and 800 series,
92 and later HP3000 series). The PA-RISC Linux project home page is
93 at <https://parisc.wiki.kernel.org>.
104 config GENERIC_LOCKBREAK
107 depends on SMP && PREEMPTION
109 config ARCH_HAS_ILOG2_U32
113 config ARCH_HAS_ILOG2_U64
122 config GENERIC_HWEIGHT
126 config GENERIC_CALIBRATE_DELAY
135 config ARCH_MMAP_RND_BITS_MIN
139 config ARCH_MMAP_RND_COMPAT_BITS_MIN
142 config ARCH_MMAP_RND_BITS_MAX
146 config ARCH_MMAP_RND_COMPAT_BITS_MAX
149 # unless you want to implement ACPI on PA-RISC ... ;-)
153 config STACKTRACE_SUPPORT
156 config LOCKDEP_SUPPORT
163 config ARCH_MAY_HAVE_PC_FDC
168 config PGTABLE_LEVELS
170 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
173 menu "Processor type and features"
176 prompt "Processor type"
177 default PA7000 if "$(ARCH)" = "parisc"
180 bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
182 This is the processor type of your CPU. This information is
183 used for optimizing purposes. In order to compile a kernel
184 that can run on all 32-bit PA CPUs (albeit not optimally fast),
185 you can specify "PA7000" here.
187 Specifying "PA8000" here will allow you to select a 64-bit kernel
188 which is required on some machines.
191 bool "PA7100LC" if "$(ARCH)" = "parisc"
193 Select this option for the PCX-L processor, as used in the
194 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
195 D200, D210, D300, D310 and E-class
198 bool "PA7200" if "$(ARCH)" = "parisc"
200 Select this option for the PCX-T' processor, as used in the
201 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
202 K100, K200, K210, K220, K400, K410 and K420
205 bool "PA7300LC" if "$(ARCH)" = "parisc"
207 Select this option for the PCX-L2 processor, as used in the
208 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
209 D220, D230, D320 and D330.
214 Select this option for PCX-U to PCX-W2 processors.
218 # Define implied options from the CPU selection here
226 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
227 select ARCH_HAS_SYNC_DMA_FOR_CPU
228 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
232 depends on PA8X00 || PA7200
234 config PARISC_HUGE_KERNEL
235 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
238 def_bool y if PARISC_HUGE_KERNEL
239 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
242 If you configure the kernel to include many drivers built-in instead
243 as modules, the kernel executable may become too big, so that the
244 linker will not be able to resolve some long branches and fails to link
245 your vmlinux kernel. In that case enabling this option will help you
246 to overcome this limit by using the -mlong-calls compiler option.
248 Usually you want to say N here, unless you e.g. want to build
249 a kernel which includes all necessary drivers built-in and which can
250 be used for TFTP booting without the need to have an initrd ramdisk.
252 Enabling this option will probably slow down your kernel.
255 def_bool y if "$(ARCH)" = "parisc64"
256 bool "64-bit kernel" if "$(ARCH)" = "parisc"
259 Enable this if you want to support 64bit kernel on PA-RISC platform.
261 At the moment, only people willing to use more than 2GB of RAM,
262 or having a 64bit-only capable PA-RISC machine should say Y here.
264 Since there is no 64bit userland on PA-RISC, there is no point to
265 enable this option otherwise. The 64bit kernel is significantly bigger
266 and slower than the 32bit one.
269 prompt "Kernel page size"
270 default PARISC_PAGE_SIZE_4KB
272 config PARISC_PAGE_SIZE_4KB
275 This lets you select the page size of the kernel. For best
276 performance, a page size of 16KB is recommended. For best
277 compatibility with 32bit applications, a page size of 4KB should be
278 selected (the vast majority of 32bit binaries work perfectly fine
279 with a larger page size).
281 4KB For best 32bit compatibility
282 16KB For best performance
283 64KB For best performance, might give more overhead.
285 If you don't know what to do, choose 4KB.
287 config PARISC_PAGE_SIZE_16KB
289 depends on PA8X00 && BROKEN && !KFENCE
291 config PARISC_PAGE_SIZE_64KB
293 depends on PA8X00 && BROKEN && !KFENCE
298 bool "Symmetric multi-processing support"
300 This enables support for systems with more than one CPU. If you have
301 a system with only one CPU, say N. If you have a system with more
304 If you say N here, the kernel will run on uni- and multiprocessor
305 machines, but will use only one CPU of a multiprocessor machine.
306 On a uniprocessor machine, the kernel will run faster if you say N.
308 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
309 available at <https://www.tldp.org/docs.html#howto>.
311 If you don't know what to do here, say N.
314 bool "Multi-core scheduler support"
315 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
317 Multi-core scheduler support improves the CPU scheduler's decision
318 making when dealing with multi-core CPU chips at a cost of slightly
319 increased overhead in some places. If unsure say N here.
322 bool "Use separate kernel stacks when processing interrupts"
325 If you say Y here the kernel will use separate kernel stacks
326 for handling hard and soft interrupts. This can help avoid
327 overflowing the process kernel stacks.
333 config ARCH_SELECT_MEMORY_MODEL
337 config ARCH_SPARSEMEM_ENABLE
341 config ARCH_FLATMEM_ENABLE
344 config ARCH_SPARSEMEM_DEFAULT
346 depends on ARCH_SPARSEMEM_ENABLE
348 source "kernel/Kconfig.hz"
358 int "Maximum number of CPUs (2-32)"
366 config ARCH_SUPPORTS_KEXEC
369 config ARCH_SUPPORTS_KEXEC_FILE
372 config ARCH_SELECTS_KEXEC_FILE
374 depends on KEXEC_FILE
377 source "drivers/parisc/Kconfig"