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_STRICT_MODULE_RWX
15 select ARCH_HAS_UBSAN_SANITIZE_ALL
16 select ARCH_NO_SG_CHAIN
17 select ARCH_SUPPORTS_MEMORY_FAILURE
20 select RTC_DRV_GENERIC
21 select INIT_ALL_POSSIBLE
23 select BUILDTIME_TABLE_SORT
25 select HAVE_PERF_EVENTS
26 select HAVE_KERNEL_BZIP2
27 select HAVE_KERNEL_GZIP
28 select HAVE_KERNEL_LZ4
29 select HAVE_KERNEL_LZMA
30 select HAVE_KERNEL_LZO
32 select GENERIC_ATOMIC64 if !64BIT
33 select GENERIC_IRQ_PROBE
34 select GENERIC_PCI_IOMAP
35 select ARCH_HAVE_NMI_SAFE_CMPXCHG
36 select GENERIC_SMP_IDLE_THREAD
37 select GENERIC_CPU_DEVICES
38 select GENERIC_STRNCPY_FROM_USER
39 select SYSCTL_ARCH_UNALIGN_ALLOW
40 select SYSCTL_EXCEPTION_TRACE
41 select HAVE_MOD_ARCH_SPECIFIC
43 select MODULES_USE_ELF_RELA
44 select CLONE_BACKWARDS
45 select TTY # Needed for pdc_cons.c
46 select HAVE_DEBUG_STACKOVERFLOW
47 select HAVE_ARCH_AUDITSYSCALL
49 select HAVE_ARCH_JUMP_LABEL
50 select HAVE_ARCH_JUMP_LABEL_RELATIVE
51 select HAVE_ARCH_SECCOMP_FILTER
52 select HAVE_ARCH_TRACEHOOK
53 select HAVE_REGS_AND_STACK_ACCESS_API
54 select GENERIC_SCHED_CLOCK
55 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
56 select GENERIC_CLOCKEVENTS
57 select CPU_NO_EFFICIENT_FFS
58 select NEED_DMA_MAP_STATE
59 select NEED_SG_DMA_LENGTH
62 select HAVE_KRETPROBES
63 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
64 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
65 select HAVE_KPROBES_ON_FTRACE
66 select HAVE_DYNAMIC_FTRACE_WITH_REGS
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
205 config PARISC_HUGE_KERNEL
206 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
209 def_bool y if PARISC_HUGE_KERNEL
210 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
213 If you configure the kernel to include many drivers built-in instead
214 as modules, the kernel executable may become too big, so that the
215 linker will not be able to resolve some long branches and fails to link
216 your vmlinux kernel. In that case enabling this option will help you
217 to overcome this limit by using the -mlong-calls compiler option.
219 Usually you want to say N here, unless you e.g. want to build
220 a kernel which includes all necessary drivers built-in and which can
221 be used for TFTP booting without the need to have an initrd ramdisk.
223 Enabling this option will probably slow down your kernel.
229 Enable this if you want to support 64bit kernel on PA-RISC platform.
231 At the moment, only people willing to use more than 2GB of RAM,
232 or having a 64bit-only capable PA-RISC machine should say Y here.
234 Since there is no 64bit userland on PA-RISC, there is no point to
235 enable this option otherwise. The 64bit kernel is significantly bigger
236 and slower than the 32bit one.
239 prompt "Kernel page size"
240 default PARISC_PAGE_SIZE_4KB
242 config PARISC_PAGE_SIZE_4KB
245 This lets you select the page size of the kernel. For best
246 performance, a page size of 16KB is recommended. For best
247 compatibility with 32bit applications, a page size of 4KB should be
248 selected (the vast majority of 32bit binaries work perfectly fine
249 with a larger page size).
251 4KB For best 32bit compatibility
252 16KB For best performance
253 64KB For best performance, might give more overhead.
255 If you don't know what to do, choose 4KB.
257 config PARISC_PAGE_SIZE_16KB
259 depends on PA8X00 && BROKEN
261 config PARISC_PAGE_SIZE_64KB
263 depends on PA8X00 && BROKEN
267 config PARISC_SELF_EXTRACT
268 bool "Build kernel as self-extracting executable"
271 Say Y if you want to build the parisc kernel as a kind of
272 self-extracting executable.
274 If you say N here, the kernel will be compressed with gzip
275 which can be loaded by the palo bootloader directly too.
277 If you don't know what to do here, say Y.
280 bool "Symmetric multi-processing support"
282 This enables support for systems with more than one CPU. If you have
283 a system with only one CPU, say N. If you have a system with more
286 If you say N here, the kernel will run on uni- and multiprocessor
287 machines, but will use only one CPU of a multiprocessor machine.
288 On a uniprocessor machine, the kernel will run faster if you say N.
290 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
291 available at <https://www.tldp.org/docs.html#howto>.
293 If you don't know what to do here, say N.
295 config PARISC_CPU_TOPOLOGY
296 bool "Support cpu topology definition"
300 Support PARISC cpu topology definition.
303 bool "Multi-core scheduler support"
304 depends on PARISC_CPU_TOPOLOGY && PA8X00
306 Multi-core scheduler support improves the CPU scheduler's decision
307 making when dealing with multi-core CPU chips at a cost of slightly
308 increased overhead in some places. If unsure say N here.
311 bool "Use separate kernel stacks when processing interrupts"
314 If you say Y here the kernel will use separate kernel stacks
315 for handling hard and soft interrupts. This can help avoid
316 overflowing the process kernel stacks.
319 bool "Use page table locks in TLB fault handler"
323 Select this option to enable page table locking in the TLB
324 fault handler. This ensures that page table entries are
325 updated consistently on SMP machines at the expense of some
332 config ARCH_SELECT_MEMORY_MODEL
336 config ARCH_SPARSEMEM_ENABLE
340 config ARCH_FLATMEM_ENABLE
343 config ARCH_SPARSEMEM_DEFAULT
345 depends on ARCH_SPARSEMEM_ENABLE
347 source "kernel/Kconfig.hz"
352 select COMPAT_BINFMT_ELF if BINFMT_ELF
354 config SYSVIPC_COMPAT
356 depends on COMPAT && SYSVIPC
362 int "Maximum number of CPUs (2-32)"
368 bool "Kexec system call"
371 kexec is a system call that implements the ability to shutdown your
372 current kernel, and to start another kernel. It is like a reboot
373 but it is independent of the system firmware. And like a reboot
374 you can start any kernel with it, not just Linux.
376 It is an ongoing process to be certain the hardware in a machine
377 shutdown, so do not be surprised if this code does not
378 initially work for you.
381 bool "kexec file based system call"
385 This enables the kexec_file_load() System call. This is
386 file based and takes file descriptors as system call argument
387 for kernel and initramfs as opposed to list of segments as
388 accepted by previous system call.
392 source "drivers/firmware/Kconfig"
394 source "drivers/parisc/Kconfig"