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 HAS_IOPORT if PCI || EISA
51 select HAVE_DEBUG_STACKOVERFLOW
52 select HAVE_ARCH_AUDITSYSCALL
54 select HAVE_ARCH_JUMP_LABEL
55 select HAVE_ARCH_JUMP_LABEL_RELATIVE
56 select HAVE_ARCH_KFENCE
57 select HAVE_ARCH_SECCOMP_FILTER
58 select HAVE_ARCH_TRACEHOOK
59 select HAVE_REGS_AND_STACK_ACCESS_API
60 select GENERIC_SCHED_CLOCK
61 select GENERIC_IRQ_MIGRATION if SMP
62 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
63 select LEGACY_TIMER_TICK
64 select CPU_NO_EFFICIENT_FFS
65 select THREAD_INFO_IN_TASK
66 select NEED_DMA_MAP_STATE
67 select NEED_SG_DMA_LENGTH
70 select HAVE_KRETPROBES
71 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
72 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
73 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
74 select HAVE_KPROBES_ON_FTRACE
75 select HAVE_DYNAMIC_FTRACE_WITH_REGS
76 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
77 select TRACE_IRQFLAGS_SUPPORT
78 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
81 The PA-RISC microprocessor is designed by Hewlett-Packard and used
82 in many of their workstations & servers (HP9000 700 and 800 series,
83 and later HP3000 series). The PA-RISC Linux project home page is
84 at <https://parisc.wiki.kernel.org>.
95 config GENERIC_LOCKBREAK
98 depends on SMP && PREEMPTION
100 config ARCH_HAS_ILOG2_U32
104 config ARCH_HAS_ILOG2_U64
113 config GENERIC_HWEIGHT
117 config GENERIC_CALIBRATE_DELAY
126 # unless you want to implement ACPI on PA-RISC ... ;-)
130 config STACKTRACE_SUPPORT
133 config LOCKDEP_SUPPORT
140 config ARCH_MAY_HAVE_PC_FDC
145 config PGTABLE_LEVELS
147 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
150 menu "Processor type and features"
153 prompt "Processor type"
154 default PA7000 if "$(ARCH)" = "parisc"
157 bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
159 This is the processor type of your CPU. This information is
160 used for optimizing purposes. In order to compile a kernel
161 that can run on all 32-bit PA CPUs (albeit not optimally fast),
162 you can specify "PA7000" here.
164 Specifying "PA8000" here will allow you to select a 64-bit kernel
165 which is required on some machines.
168 bool "PA7100LC" if "$(ARCH)" = "parisc"
170 Select this option for the PCX-L processor, as used in the
171 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
172 D200, D210, D300, D310 and E-class
175 bool "PA7200" if "$(ARCH)" = "parisc"
177 Select this option for the PCX-T' processor, as used in the
178 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
179 K100, K200, K210, K220, K400, K410 and K420
182 bool "PA7300LC" if "$(ARCH)" = "parisc"
184 Select this option for the PCX-L2 processor, as used in the
185 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
186 D220, D230, D320 and D330.
191 Select this option for PCX-U to PCX-W2 processors.
195 # Define implied options from the CPU selection here
203 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
204 select ARCH_HAS_SYNC_DMA_FOR_CPU
205 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
209 depends on PA8X00 || PA7200
211 config PARISC_HUGE_KERNEL
212 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
215 def_bool y if PARISC_HUGE_KERNEL
216 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
219 If you configure the kernel to include many drivers built-in instead
220 as modules, the kernel executable may become too big, so that the
221 linker will not be able to resolve some long branches and fails to link
222 your vmlinux kernel. In that case enabling this option will help you
223 to overcome this limit by using the -mlong-calls compiler option.
225 Usually you want to say N here, unless you e.g. want to build
226 a kernel which includes all necessary drivers built-in and which can
227 be used for TFTP booting without the need to have an initrd ramdisk.
229 Enabling this option will probably slow down your kernel.
232 def_bool y if "$(ARCH)" = "parisc64"
233 bool "64-bit kernel" if "$(ARCH)" = "parisc"
236 Enable this if you want to support 64bit kernel on PA-RISC platform.
238 At the moment, only people willing to use more than 2GB of RAM,
239 or having a 64bit-only capable PA-RISC machine should say Y here.
241 Since there is no 64bit userland on PA-RISC, there is no point to
242 enable this option otherwise. The 64bit kernel is significantly bigger
243 and slower than the 32bit one.
246 prompt "Kernel page size"
247 default PARISC_PAGE_SIZE_4KB
249 config PARISC_PAGE_SIZE_4KB
252 This lets you select the page size of the kernel. For best
253 performance, a page size of 16KB is recommended. For best
254 compatibility with 32bit applications, a page size of 4KB should be
255 selected (the vast majority of 32bit binaries work perfectly fine
256 with a larger page size).
258 4KB For best 32bit compatibility
259 16KB For best performance
260 64KB For best performance, might give more overhead.
262 If you don't know what to do, choose 4KB.
264 config PARISC_PAGE_SIZE_16KB
266 depends on PA8X00 && BROKEN && !KFENCE
268 config PARISC_PAGE_SIZE_64KB
270 depends on PA8X00 && BROKEN && !KFENCE
275 bool "Symmetric multi-processing support"
277 This enables support for systems with more than one CPU. If you have
278 a system with only one CPU, say N. If you have a system with more
281 If you say N here, the kernel will run on uni- and multiprocessor
282 machines, but will use only one CPU of a multiprocessor machine.
283 On a uniprocessor machine, the kernel will run faster if you say N.
285 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
286 available at <https://www.tldp.org/docs.html#howto>.
288 If you don't know what to do here, say N.
291 bool "Multi-core scheduler support"
292 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
294 Multi-core scheduler support improves the CPU scheduler's decision
295 making when dealing with multi-core CPU chips at a cost of slightly
296 increased overhead in some places. If unsure say N here.
299 bool "Use separate kernel stacks when processing interrupts"
302 If you say Y here the kernel will use separate kernel stacks
303 for handling hard and soft interrupts. This can help avoid
304 overflowing the process kernel stacks.
307 bool "Use page table locks in TLB fault handler"
311 Select this option to enable page table locking in the TLB
312 fault handler. This ensures that page table entries are
313 updated consistently on SMP machines at the expense of some
320 config ARCH_SELECT_MEMORY_MODEL
324 config ARCH_SPARSEMEM_ENABLE
328 config ARCH_FLATMEM_ENABLE
331 config ARCH_SPARSEMEM_DEFAULT
333 depends on ARCH_SPARSEMEM_ENABLE
335 source "kernel/Kconfig.hz"
345 int "Maximum number of CPUs (2-32)"
352 bool "Kexec system call"
355 kexec is a system call that implements the ability to shutdown your
356 current kernel, and to start another kernel. It is like a reboot
357 but it is independent of the system firmware. And like a reboot
358 you can start any kernel with it, not just Linux.
360 It is an ongoing process to be certain the hardware in a machine
361 shutdown, so do not be surprised if this code does not
362 initially work for you.
365 bool "kexec file based system call"
369 This enables the kexec_file_load() System call. This is
370 file based and takes file descriptors as system call argument
371 for kernel and initramfs as opposed to list of segments as
372 accepted by previous system call.
376 source "drivers/parisc/Kconfig"