1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T if !64BIT
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select HAVE_FUNCTION_TRACER
7 select HAVE_FUNCTION_GRAPH_TRACER
8 select HAVE_SYSCALL_TRACEPOINTS
9 select ARCH_WANT_FRAME_POINTERS
10 select ARCH_HAS_ELF_RANDOMIZE
11 select ARCH_HAS_STRICT_KERNEL_RWX
12 select ARCH_HAS_UBSAN_SANITIZE_ALL
13 select ARCH_NO_SG_CHAIN
14 select ARCH_SUPPORTS_HUGETLBFS if PA20
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_LIB_DEVMEM_IS_ALLOWED
37 select SYSCTL_ARCH_UNALIGN_ALLOW
38 select SYSCTL_EXCEPTION_TRACE
39 select HAVE_MOD_ARCH_SPECIFIC
41 select MODULES_USE_ELF_RELA
42 select CLONE_BACKWARDS
43 select TTY # Needed for pdc_cons.c
44 select HAVE_DEBUG_STACKOVERFLOW
45 select HAVE_ARCH_AUDITSYSCALL
47 select HAVE_ARCH_JUMP_LABEL
48 select HAVE_ARCH_JUMP_LABEL_RELATIVE
49 select HAVE_ARCH_SECCOMP_FILTER
50 select HAVE_ARCH_TRACEHOOK
51 select HAVE_REGS_AND_STACK_ACCESS_API
52 select GENERIC_SCHED_CLOCK
53 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
54 select LEGACY_TIMER_TICK
55 select CPU_NO_EFFICIENT_FFS
56 select NEED_DMA_MAP_STATE
57 select NEED_SG_DMA_LENGTH
60 select HAVE_KRETPROBES
61 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
62 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
63 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
64 select HAVE_KPROBES_ON_FTRACE
65 select HAVE_DYNAMIC_FTRACE_WITH_REGS
66 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
67 select TRACE_IRQFLAGS_SUPPORT
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 menu "Processor type and features"
143 prompt "Processor type"
149 This is the processor type of your CPU. This information is
150 used for optimizing purposes. In order to compile a kernel
151 that can run on all 32-bit PA CPUs (albeit not optimally fast),
152 you can specify "PA7000" here.
154 Specifying "PA8000" here will allow you to select a 64-bit kernel
155 which is required on some machines.
160 Select this option for the PCX-L processor, as used in the
161 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
162 D200, D210, D300, D310 and E-class
167 Select this option for the PCX-T' processor, as used in the
168 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
169 K100, K200, K210, K220, K400, K410 and K420
174 Select this option for the PCX-L2 processor, as used in the
175 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
176 D220, D230, D320 and D330.
181 Select this option for PCX-U to PCX-W2 processors.
185 # Define implied options from the CPU selection here
193 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
194 select ARCH_HAS_SYNC_DMA_FOR_CPU
195 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
199 depends on PA8X00 || PA7200
201 config PARISC_HUGE_KERNEL
202 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
205 def_bool y if PARISC_HUGE_KERNEL
206 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
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.
315 bool "Use page table locks in TLB fault handler"
319 Select this option to enable page table locking in the TLB
320 fault handler. This ensures that page table entries are
321 updated consistently on SMP machines at the expense of some
328 config ARCH_SELECT_MEMORY_MODEL
332 config ARCH_SPARSEMEM_ENABLE
336 config ARCH_FLATMEM_ENABLE
339 config ARCH_SPARSEMEM_DEFAULT
341 depends on ARCH_SPARSEMEM_ENABLE
343 source "kernel/Kconfig.hz"
349 config SYSVIPC_COMPAT
351 depends on COMPAT && SYSVIPC
357 int "Maximum number of CPUs (2-32)"
363 bool "Kexec system call"
366 kexec is a system call that implements the ability to shutdown your
367 current kernel, and to start another kernel. It is like a reboot
368 but it is independent of the system firmware. And like a reboot
369 you can start any kernel with it, not just Linux.
371 It is an ongoing process to be certain the hardware in a machine
372 shutdown, so do not be surprised if this code does not
373 initially work for you.
376 bool "kexec file based system call"
380 This enables the kexec_file_load() System call. This is
381 file based and takes file descriptors as system call argument
382 for kernel and initramfs as opposed to list of segments as
383 accepted by previous system call.
387 source "drivers/parisc/Kconfig"