1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T if !64BIT
5 select ARCH_MIGHT_HAVE_PC_PARPORT
8 select HAVE_FUNCTION_TRACER
9 select HAVE_FUNCTION_GRAPH_TRACER
10 select HAVE_SYSCALL_TRACEPOINTS
11 select ARCH_WANT_FRAME_POINTERS
12 select ARCH_HAS_ELF_RANDOMIZE
13 select ARCH_HAS_STRICT_KERNEL_RWX
14 select ARCH_HAS_UBSAN_SANITIZE_ALL
15 select ARCH_NO_SG_CHAIN
16 select ARCH_SUPPORTS_MEMORY_FAILURE
19 select RTC_DRV_GENERIC
20 select INIT_ALL_POSSIBLE
22 select BUILDTIME_TABLE_SORT
24 select HAVE_PERF_EVENTS
25 select HAVE_KERNEL_BZIP2
26 select HAVE_KERNEL_GZIP
27 select HAVE_KERNEL_LZ4
28 select HAVE_KERNEL_LZMA
29 select HAVE_KERNEL_LZO
31 select GENERIC_ATOMIC64 if !64BIT
32 select GENERIC_IRQ_PROBE
33 select GENERIC_PCI_IOMAP
34 select ARCH_HAVE_NMI_SAFE_CMPXCHG
35 select GENERIC_SMP_IDLE_THREAD
36 select GENERIC_CPU_DEVICES
37 select GENERIC_STRNCPY_FROM_USER
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
69 The PA-RISC microprocessor is designed by Hewlett-Packard and used
70 in many of their workstations & servers (HP9000 700 and 800 series,
71 and later HP3000 series). The PA-RISC Linux project home page is
72 at <https://parisc.wiki.kernel.org>.
85 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT
86 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT
88 config GENERIC_LOCKBREAK
91 depends on SMP && PREEMPTION
93 config ARCH_HAS_ILOG2_U32
97 config ARCH_HAS_ILOG2_U64
106 config GENERIC_HWEIGHT
110 config GENERIC_CALIBRATE_DELAY
119 # unless you want to implement ACPI on PA-RISC ... ;-)
123 config STACKTRACE_SUPPORT
129 config ARCH_MAY_HAVE_PC_FDC
134 config PGTABLE_LEVELS
136 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
139 config SYS_SUPPORTS_HUGETLBFS
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
205 bool "Enable the -mlong-calls compiler option for big kernels"
206 default y 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.
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"
339 select COMPAT_BINFMT_ELF if BINFMT_ELF
341 config SYSVIPC_COMPAT
343 depends on COMPAT && SYSVIPC
349 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/firmware/Kconfig"
381 source "drivers/parisc/Kconfig"