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_UBSAN_SANITIZE_ALL
14 select ARCH_HAS_PTE_SPECIAL
15 select ARCH_NO_SG_CHAIN
16 select ARCH_SUPPORTS_HUGETLBFS if PA20
17 select ARCH_SUPPORTS_MEMORY_FAILURE
19 select ARCH_HAS_DEBUG_VM_PGTABLE
20 select HAVE_RELIABLE_STACKTRACE
23 select RTC_DRV_GENERIC
24 select INIT_ALL_POSSIBLE
26 select BUILDTIME_TABLE_SORT
28 select HAVE_PERF_EVENTS
29 select HAVE_KERNEL_BZIP2
30 select HAVE_KERNEL_GZIP
31 select HAVE_KERNEL_LZ4
32 select HAVE_KERNEL_LZMA
33 select HAVE_KERNEL_LZO
35 select GENERIC_ATOMIC64 if !64BIT
36 select GENERIC_IRQ_PROBE
37 select GENERIC_PCI_IOMAP
38 select ARCH_HAVE_NMI_SAFE_CMPXCHG
39 select GENERIC_SMP_IDLE_THREAD
40 select GENERIC_CPU_DEVICES
41 select GENERIC_LIB_DEVMEM_IS_ALLOWED
42 select SYSCTL_ARCH_UNALIGN_ALLOW
43 select SYSCTL_EXCEPTION_TRACE
44 select HAVE_MOD_ARCH_SPECIFIC
46 select MODULES_USE_ELF_RELA
47 select CLONE_BACKWARDS
48 select TTY # Needed for pdc_cons.c
49 select HAVE_DEBUG_STACKOVERFLOW
50 select HAVE_ARCH_AUDITSYSCALL
52 select HAVE_ARCH_JUMP_LABEL
53 select HAVE_ARCH_JUMP_LABEL_RELATIVE
54 select HAVE_ARCH_KFENCE
55 select HAVE_ARCH_SECCOMP_FILTER
56 select HAVE_ARCH_TRACEHOOK
57 select HAVE_REGS_AND_STACK_ACCESS_API
58 select GENERIC_SCHED_CLOCK
59 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
60 select LEGACY_TIMER_TICK
61 select CPU_NO_EFFICIENT_FFS
62 select THREAD_INFO_IN_TASK
63 select NEED_DMA_MAP_STATE
64 select NEED_SG_DMA_LENGTH
67 select HAVE_KRETPROBES
68 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
69 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
70 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
71 select HAVE_KPROBES_ON_FTRACE
72 select HAVE_DYNAMIC_FTRACE_WITH_REGS
73 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
74 select TRACE_IRQFLAGS_SUPPORT
75 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
78 The PA-RISC microprocessor is designed by Hewlett-Packard and used
79 in many of their workstations & servers (HP9000 700 and 800 series,
80 and later HP3000 series). The PA-RISC Linux project home page is
81 at <https://parisc.wiki.kernel.org>.
92 config GENERIC_LOCKBREAK
95 depends on SMP && PREEMPTION
97 config ARCH_HAS_ILOG2_U32
101 config ARCH_HAS_ILOG2_U64
110 config GENERIC_HWEIGHT
114 config GENERIC_CALIBRATE_DELAY
123 # unless you want to implement ACPI on PA-RISC ... ;-)
127 config STACKTRACE_SUPPORT
133 config ARCH_MAY_HAVE_PC_FDC
138 config PGTABLE_LEVELS
140 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
143 menu "Processor type and features"
146 prompt "Processor type"
152 This is the processor type of your CPU. This information is
153 used for optimizing purposes. In order to compile a kernel
154 that can run on all 32-bit PA CPUs (albeit not optimally fast),
155 you can specify "PA7000" here.
157 Specifying "PA8000" here will allow you to select a 64-bit kernel
158 which is required on some machines.
163 Select this option for the PCX-L processor, as used in the
164 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
165 D200, D210, D300, D310 and E-class
170 Select this option for the PCX-T' processor, as used in the
171 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
172 K100, K200, K210, K220, K400, K410 and K420
177 Select this option for the PCX-L2 processor, as used in the
178 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
179 D220, D230, D320 and D330.
184 Select this option for PCX-U to PCX-W2 processors.
188 # Define implied options from the CPU selection here
196 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
197 select ARCH_HAS_SYNC_DMA_FOR_CPU
198 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
202 depends on PA8X00 || PA7200
204 config PARISC_HUGE_KERNEL
205 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
208 def_bool y if PARISC_HUGE_KERNEL
209 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
212 If you configure the kernel to include many drivers built-in instead
213 as modules, the kernel executable may become too big, so that the
214 linker will not be able to resolve some long branches and fails to link
215 your vmlinux kernel. In that case enabling this option will help you
216 to overcome this limit by using the -mlong-calls compiler option.
218 Usually you want to say N here, unless you e.g. want to build
219 a kernel which includes all necessary drivers built-in and which can
220 be used for TFTP booting without the need to have an initrd ramdisk.
222 Enabling this option will probably slow down your kernel.
228 Enable this if you want to support 64bit kernel on PA-RISC platform.
230 At the moment, only people willing to use more than 2GB of RAM,
231 or having a 64bit-only capable PA-RISC machine should say Y here.
233 Since there is no 64bit userland on PA-RISC, there is no point to
234 enable this option otherwise. The 64bit kernel is significantly bigger
235 and slower than the 32bit one.
238 prompt "Kernel page size"
239 default PARISC_PAGE_SIZE_4KB
241 config PARISC_PAGE_SIZE_4KB
244 This lets you select the page size of the kernel. For best
245 performance, a page size of 16KB is recommended. For best
246 compatibility with 32bit applications, a page size of 4KB should be
247 selected (the vast majority of 32bit binaries work perfectly fine
248 with a larger page size).
250 4KB For best 32bit compatibility
251 16KB For best performance
252 64KB For best performance, might give more overhead.
254 If you don't know what to do, choose 4KB.
256 config PARISC_PAGE_SIZE_16KB
258 depends on PA8X00 && BROKEN && !KFENCE
260 config PARISC_PAGE_SIZE_64KB
262 depends on PA8X00 && BROKEN && !KFENCE
267 bool "Symmetric multi-processing support"
269 This enables support for systems with more than one CPU. If you have
270 a system with only one CPU, say N. If you have a system with more
273 If you say N here, the kernel will run on uni- and multiprocessor
274 machines, but will use only one CPU of a multiprocessor machine.
275 On a uniprocessor machine, the kernel will run faster if you say N.
277 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
278 available at <https://www.tldp.org/docs.html#howto>.
280 If you don't know what to do here, say N.
282 config PARISC_CPU_TOPOLOGY
283 bool "Support cpu topology definition"
287 Support PARISC cpu topology definition.
290 bool "Multi-core scheduler support"
291 depends on PARISC_CPU_TOPOLOGY && PA8X00
293 Multi-core scheduler support improves the CPU scheduler's decision
294 making when dealing with multi-core CPU chips at a cost of slightly
295 increased overhead in some places. If unsure say N here.
298 bool "Use separate kernel stacks when processing interrupts"
301 If you say Y here the kernel will use separate kernel stacks
302 for handling hard and soft interrupts. This can help avoid
303 overflowing the process kernel stacks.
306 bool "Use page table locks in TLB fault handler"
310 Select this option to enable page table locking in the TLB
311 fault handler. This ensures that page table entries are
312 updated consistently on SMP machines at the expense of some
319 config ARCH_SELECT_MEMORY_MODEL
323 config ARCH_SPARSEMEM_ENABLE
327 config ARCH_FLATMEM_ENABLE
330 config ARCH_SPARSEMEM_DEFAULT
332 depends on ARCH_SPARSEMEM_ENABLE
334 source "kernel/Kconfig.hz"
340 config SYSVIPC_COMPAT
342 depends on COMPAT && SYSVIPC
348 int "Maximum number of CPUs (2-32)"
355 bool "Kexec system call"
358 kexec is a system call that implements the ability to shutdown your
359 current kernel, and to start another kernel. It is like a reboot
360 but it is independent of the system firmware. And like a reboot
361 you can start any kernel with it, not just Linux.
363 It is an ongoing process to be certain the hardware in a machine
364 shutdown, so do not be surprised if this code does not
365 initially work for you.
368 bool "kexec file based system call"
372 This enables the kexec_file_load() System call. This is
373 file based and takes file descriptors as system call argument
374 for kernel and initramfs as opposed to list of segments as
375 accepted by previous system call.
379 source "drivers/parisc/Kconfig"