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 GENERIC_CLOCKEVENTS
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
68 The PA-RISC microprocessor is designed by Hewlett-Packard and used
69 in many of their workstations & servers (HP9000 700 and 800 series,
70 and later HP3000 series). The PA-RISC Linux project home page is
71 at <https://parisc.wiki.kernel.org>.
84 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT
85 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT
87 config GENERIC_LOCKBREAK
90 depends on SMP && PREEMPTION
92 config ARCH_HAS_ILOG2_U32
96 config ARCH_HAS_ILOG2_U64
105 config GENERIC_HWEIGHT
109 config GENERIC_CALIBRATE_DELAY
118 # unless you want to implement ACPI on PA-RISC ... ;-)
122 config STACKTRACE_SUPPORT
128 config ARCH_MAY_HAVE_PC_FDC
133 config PGTABLE_LEVELS
135 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
138 config SYS_SUPPORTS_HUGETLBFS
142 menu "Processor type and features"
145 prompt "Processor type"
151 This is the processor type of your CPU. This information is
152 used for optimizing purposes. In order to compile a kernel
153 that can run on all 32-bit PA CPUs (albeit not optimally fast),
154 you can specify "PA7000" here.
156 Specifying "PA8000" here will allow you to select a 64-bit kernel
157 which is required on some machines.
162 Select this option for the PCX-L processor, as used in the
163 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
164 D200, D210, D300, D310 and E-class
169 Select this option for the PCX-T' processor, as used in the
170 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
171 K100, K200, K210, K220, K400, K410 and K420
176 Select this option for the PCX-L2 processor, as used in the
177 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
178 D220, D230, D320 and D330.
183 Select this option for PCX-U to PCX-W2 processors.
187 # Define implied options from the CPU selection here
195 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
196 select ARCH_HAS_SYNC_DMA_FOR_CPU
197 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
201 depends on PA8X00 || PA7200
204 bool "Enable the -mlong-calls compiler option for big kernels"
205 default y if !MODULES || UBSAN || FTRACE
209 If you configure the kernel to include many drivers built-in instead
210 as modules, the kernel executable may become too big, so that the
211 linker will not be able to resolve some long branches and fails to link
212 your vmlinux kernel. In that case enabling this option will help you
213 to overcome this limit by using the -mlong-calls compiler option.
215 Usually you want to say N here, unless you e.g. want to build
216 a kernel which includes all necessary drivers built-in and which can
217 be used for TFTP booting without the need to have an initrd ramdisk.
219 Enabling this option will probably slow down your kernel.
225 Enable this if you want to support 64bit kernel on PA-RISC platform.
227 At the moment, only people willing to use more than 2GB of RAM,
228 or having a 64bit-only capable PA-RISC machine should say Y here.
230 Since there is no 64bit userland on PA-RISC, there is no point to
231 enable this option otherwise. The 64bit kernel is significantly bigger
232 and slower than the 32bit one.
235 prompt "Kernel page size"
236 default PARISC_PAGE_SIZE_4KB
238 config PARISC_PAGE_SIZE_4KB
241 This lets you select the page size of the kernel. For best
242 performance, a page size of 16KB is recommended. For best
243 compatibility with 32bit applications, a page size of 4KB should be
244 selected (the vast majority of 32bit binaries work perfectly fine
245 with a larger page size).
247 4KB For best 32bit compatibility
248 16KB For best performance
249 64KB For best performance, might give more overhead.
251 If you don't know what to do, choose 4KB.
253 config PARISC_PAGE_SIZE_16KB
255 depends on PA8X00 && BROKEN
257 config PARISC_PAGE_SIZE_64KB
259 depends on PA8X00 && BROKEN
263 config PARISC_SELF_EXTRACT
264 bool "Build kernel as self-extracting executable"
267 Say Y if you want to build the parisc kernel as a kind of
268 self-extracting executable.
270 If you say N here, the kernel will be compressed with gzip
271 which can be loaded by the palo bootloader directly too.
273 If you don't know what to do here, say Y.
276 bool "Symmetric multi-processing support"
278 This enables support for systems with more than one CPU. If you have
279 a system with only one CPU, say N. If you have a system with more
282 If you say N here, the kernel will run on uni- and multiprocessor
283 machines, but will use only one CPU of a multiprocessor machine.
284 On a uniprocessor machine, the kernel will run faster if you say N.
286 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
287 available at <https://www.tldp.org/docs.html#howto>.
289 If you don't know what to do here, say N.
291 config PARISC_CPU_TOPOLOGY
292 bool "Support cpu topology definition"
296 Support PARISC cpu topology definition.
299 bool "Multi-core scheduler support"
300 depends on PARISC_CPU_TOPOLOGY && PA8X00
302 Multi-core scheduler support improves the CPU scheduler's decision
303 making when dealing with multi-core CPU chips at a cost of slightly
304 increased overhead in some places. If unsure say N here.
307 bool "Use separate kernel stacks when processing interrupts"
310 If you say Y here the kernel will use separate kernel stacks
311 for handling hard and soft interrupts. This can help avoid
312 overflowing the process kernel stacks.
318 config ARCH_SELECT_MEMORY_MODEL
322 config ARCH_SPARSEMEM_ENABLE
326 config ARCH_FLATMEM_ENABLE
329 config ARCH_SPARSEMEM_DEFAULT
331 depends on ARCH_SPARSEMEM_ENABLE
333 source "kernel/Kconfig.hz"
338 select COMPAT_BINFMT_ELF if BINFMT_ELF
340 config SYSVIPC_COMPAT
342 depends on COMPAT && SYSVIPC
348 int "Maximum number of CPUs (2-32)"
354 bool "Kexec system call"
357 kexec is a system call that implements the ability to shutdown your
358 current kernel, and to start another kernel. It is like a reboot
359 but it is independent of the system firmware. And like a reboot
360 you can start any kernel with it, not just Linux.
362 It is an ongoing process to be certain the hardware in a machine
363 shutdown, so do not be surprised if this code does not
364 initially work for you.
367 bool "kexec file based system call"
371 This enables the kexec_file_load() System call. This is
372 file based and takes file descriptors as system call argument
373 for kernel and initramfs as opposed to list of segments as
374 accepted by previous system call.
379 source "drivers/parisc/Kconfig"