1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T if !64BIT
5 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_NO_SG_CHAIN
15 select ARCH_SUPPORTS_MEMORY_FAILURE
18 select RTC_DRV_GENERIC
19 select INIT_ALL_POSSIBLE
21 select BUILDTIME_TABLE_SORT
23 select HAVE_PERF_EVENTS
24 select HAVE_KERNEL_BZIP2
25 select HAVE_KERNEL_GZIP
26 select HAVE_KERNEL_LZ4
27 select HAVE_KERNEL_LZMA
28 select HAVE_KERNEL_LZO
30 select GENERIC_ATOMIC64 if !64BIT
31 select GENERIC_IRQ_PROBE
32 select GENERIC_PCI_IOMAP
33 select ARCH_HAVE_NMI_SAFE_CMPXCHG
34 select GENERIC_SMP_IDLE_THREAD
35 select GENERIC_CPU_DEVICES
36 select GENERIC_STRNCPY_FROM_USER
37 select GENERIC_LIB_DEVMEM_IS_ALLOWED
38 select SYSCTL_ARCH_UNALIGN_ALLOW
39 select SYSCTL_EXCEPTION_TRACE
40 select HAVE_MOD_ARCH_SPECIFIC
42 select MODULES_USE_ELF_RELA
43 select CLONE_BACKWARDS
44 select TTY # Needed for pdc_cons.c
45 select HAVE_DEBUG_STACKOVERFLOW
46 select HAVE_ARCH_AUDITSYSCALL
48 select HAVE_ARCH_JUMP_LABEL
49 select HAVE_ARCH_JUMP_LABEL_RELATIVE
50 select HAVE_ARCH_SECCOMP_FILTER
51 select HAVE_ARCH_TRACEHOOK
52 select HAVE_REGS_AND_STACK_ACCESS_API
53 select GENERIC_SCHED_CLOCK
54 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
55 select LEGACY_TIMER_TICK
56 select CPU_NO_EFFICIENT_FFS
57 select NEED_DMA_MAP_STATE
58 select NEED_SG_DMA_LENGTH
61 select HAVE_KRETPROBES
62 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
63 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
64 select HAVE_KPROBES_ON_FTRACE
65 select HAVE_DYNAMIC_FTRACE_WITH_REGS
66 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
70 The PA-RISC microprocessor is designed by Hewlett-Packard and used
71 in many of their workstations & servers (HP9000 700 and 800 series,
72 and later HP3000 series). The PA-RISC Linux project home page is
73 at <https://parisc.wiki.kernel.org>.
86 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT
87 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT
89 config GENERIC_LOCKBREAK
92 depends on SMP && PREEMPTION
94 config ARCH_HAS_ILOG2_U32
98 config ARCH_HAS_ILOG2_U64
107 config GENERIC_HWEIGHT
111 config GENERIC_CALIBRATE_DELAY
120 # unless you want to implement ACPI on PA-RISC ... ;-)
124 config STACKTRACE_SUPPORT
130 config ARCH_MAY_HAVE_PC_FDC
135 config PGTABLE_LEVELS
137 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
140 config SYS_SUPPORTS_HUGETLBFS
144 menu "Processor type and features"
147 prompt "Processor type"
153 This is the processor type of your CPU. This information is
154 used for optimizing purposes. In order to compile a kernel
155 that can run on all 32-bit PA CPUs (albeit not optimally fast),
156 you can specify "PA7000" here.
158 Specifying "PA8000" here will allow you to select a 64-bit kernel
159 which is required on some machines.
164 Select this option for the PCX-L processor, as used in the
165 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
166 D200, D210, D300, D310 and E-class
171 Select this option for the PCX-T' processor, as used in the
172 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
173 K100, K200, K210, K220, K400, K410 and K420
178 Select this option for the PCX-L2 processor, as used in the
179 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
180 D220, D230, D320 and D330.
185 Select this option for PCX-U to PCX-W2 processors.
189 # Define implied options from the CPU selection here
197 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
198 select ARCH_HAS_SYNC_DMA_FOR_CPU
199 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
203 depends on PA8X00 || PA7200
206 def_bool y if !MODULES || UBSAN || FTRACE
207 bool "Enable the -mlong-calls compiler option for big kernels" if MODULES && !UBSAN && !FTRACE
210 If you configure the kernel to include many drivers built-in instead
211 as modules, the kernel executable may become too big, so that the
212 linker will not be able to resolve some long branches and fails to link
213 your vmlinux kernel. In that case enabling this option will help you
214 to overcome this limit by using the -mlong-calls compiler option.
216 Usually you want to say N here, unless you e.g. want to build
217 a kernel which includes all necessary drivers built-in and which can
218 be used for TFTP booting without the need to have an initrd ramdisk.
220 Enabling this option will probably slow down your kernel.
226 Enable this if you want to support 64bit kernel on PA-RISC platform.
228 At the moment, only people willing to use more than 2GB of RAM,
229 or having a 64bit-only capable PA-RISC machine should say Y here.
231 Since there is no 64bit userland on PA-RISC, there is no point to
232 enable this option otherwise. The 64bit kernel is significantly bigger
233 and slower than the 32bit one.
236 prompt "Kernel page size"
237 default PARISC_PAGE_SIZE_4KB
239 config PARISC_PAGE_SIZE_4KB
242 This lets you select the page size of the kernel. For best
243 performance, a page size of 16KB is recommended. For best
244 compatibility with 32bit applications, a page size of 4KB should be
245 selected (the vast majority of 32bit binaries work perfectly fine
246 with a larger page size).
248 4KB For best 32bit compatibility
249 16KB For best performance
250 64KB For best performance, might give more overhead.
252 If you don't know what to do, choose 4KB.
254 config PARISC_PAGE_SIZE_16KB
256 depends on PA8X00 && BROKEN
258 config PARISC_PAGE_SIZE_64KB
260 depends on PA8X00 && BROKEN
264 config PARISC_SELF_EXTRACT
265 bool "Build kernel as self-extracting executable"
268 Say Y if you want to build the parisc kernel as a kind of
269 self-extracting executable.
271 If you say N here, the kernel will be compressed with gzip
272 which can be loaded by the palo bootloader directly too.
274 If you don't know what to do here, say Y.
277 bool "Symmetric multi-processing support"
279 This enables support for systems with more than one CPU. If you have
280 a system with only one CPU, say N. If you have a system with more
283 If you say N here, the kernel will run on uni- and multiprocessor
284 machines, but will use only one CPU of a multiprocessor machine.
285 On a uniprocessor machine, the kernel will run faster if you say N.
287 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
288 available at <https://www.tldp.org/docs.html#howto>.
290 If you don't know what to do here, say N.
292 config PARISC_CPU_TOPOLOGY
293 bool "Support cpu topology definition"
297 Support PARISC cpu topology definition.
300 bool "Multi-core scheduler support"
301 depends on PARISC_CPU_TOPOLOGY && PA8X00
303 Multi-core scheduler support improves the CPU scheduler's decision
304 making when dealing with multi-core CPU chips at a cost of slightly
305 increased overhead in some places. If unsure say N here.
308 bool "Use separate kernel stacks when processing interrupts"
311 If you say Y here the kernel will use separate kernel stacks
312 for handling hard and soft interrupts. This can help avoid
313 overflowing the process kernel stacks.
316 bool "Use page table locks in TLB fault handler"
320 Select this option to enable page table locking in the TLB
321 fault handler. This ensures that page table entries are
322 updated consistently on SMP machines at the expense of some
329 config ARCH_SELECT_MEMORY_MODEL
333 config ARCH_SPARSEMEM_ENABLE
337 config ARCH_FLATMEM_ENABLE
340 config ARCH_SPARSEMEM_DEFAULT
342 depends on ARCH_SPARSEMEM_ENABLE
344 source "kernel/Kconfig.hz"
350 config SYSVIPC_COMPAT
352 depends on COMPAT && SYSVIPC
358 int "Maximum number of CPUs (2-32)"
364 bool "Kexec system call"
367 kexec is a system call that implements the ability to shutdown your
368 current kernel, and to start another kernel. It is like a reboot
369 but it is independent of the system firmware. And like a reboot
370 you can start any kernel with it, not just Linux.
372 It is an ongoing process to be certain the hardware in a machine
373 shutdown, so do not be surprised if this code does not
374 initially work for you.
377 bool "kexec file based system call"
381 This enables the kexec_file_load() System call. This is
382 file based and takes file descriptors as system call argument
383 for kernel and initramfs as opposed to list of segments as
384 accepted by previous system call.
388 source "drivers/firmware/Kconfig"
390 source "drivers/parisc/Kconfig"