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_HUGETLBFS if PA20
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 GENERIC_LIB_DEVMEM_IS_ALLOWED
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 LEGACY_TIMER_TICK
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 FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
66 select HAVE_KPROBES_ON_FTRACE
67 select HAVE_DYNAMIC_FTRACE_WITH_REGS
68 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
72 The PA-RISC microprocessor is designed by Hewlett-Packard and used
73 in many of their workstations & servers (HP9000 700 and 800 series,
74 and later HP3000 series). The PA-RISC Linux project home page is
75 at <https://parisc.wiki.kernel.org>.
88 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT
89 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT
91 config GENERIC_LOCKBREAK
94 depends on SMP && PREEMPTION
96 config ARCH_HAS_ILOG2_U32
100 config ARCH_HAS_ILOG2_U64
109 config GENERIC_HWEIGHT
113 config GENERIC_CALIBRATE_DELAY
122 # unless you want to implement ACPI on PA-RISC ... ;-)
126 config STACKTRACE_SUPPORT
132 config ARCH_MAY_HAVE_PC_FDC
137 config PGTABLE_LEVELS
139 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
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
203 config PARISC_HUGE_KERNEL
204 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
207 def_bool y if PARISC_HUGE_KERNEL
208 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
211 If you configure the kernel to include many drivers built-in instead
212 as modules, the kernel executable may become too big, so that the
213 linker will not be able to resolve some long branches and fails to link
214 your vmlinux kernel. In that case enabling this option will help you
215 to overcome this limit by using the -mlong-calls compiler option.
217 Usually you want to say N here, unless you e.g. want to build
218 a kernel which includes all necessary drivers built-in and which can
219 be used for TFTP booting without the need to have an initrd ramdisk.
221 Enabling this option will probably slow down your kernel.
227 Enable this if you want to support 64bit kernel on PA-RISC platform.
229 At the moment, only people willing to use more than 2GB of RAM,
230 or having a 64bit-only capable PA-RISC machine should say Y here.
232 Since there is no 64bit userland on PA-RISC, there is no point to
233 enable this option otherwise. The 64bit kernel is significantly bigger
234 and slower than the 32bit one.
237 prompt "Kernel page size"
238 default PARISC_PAGE_SIZE_4KB
240 config PARISC_PAGE_SIZE_4KB
243 This lets you select the page size of the kernel. For best
244 performance, a page size of 16KB is recommended. For best
245 compatibility with 32bit applications, a page size of 4KB should be
246 selected (the vast majority of 32bit binaries work perfectly fine
247 with a larger page size).
249 4KB For best 32bit compatibility
250 16KB For best performance
251 64KB For best performance, might give more overhead.
253 If you don't know what to do, choose 4KB.
255 config PARISC_PAGE_SIZE_16KB
257 depends on PA8X00 && BROKEN
259 config PARISC_PAGE_SIZE_64KB
261 depends on PA8X00 && BROKEN
265 config PARISC_SELF_EXTRACT
266 bool "Build kernel as self-extracting executable"
269 Say Y if you want to build the parisc kernel as a kind of
270 self-extracting executable.
272 If you say N here, the kernel will be compressed with gzip
273 which can be loaded by the palo bootloader directly too.
275 If you don't know what to do here, say Y.
278 bool "Symmetric multi-processing support"
280 This enables support for systems with more than one CPU. If you have
281 a system with only one CPU, say N. If you have a system with more
284 If you say N here, the kernel will run on uni- and multiprocessor
285 machines, but will use only one CPU of a multiprocessor machine.
286 On a uniprocessor machine, the kernel will run faster if you say N.
288 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
289 available at <https://www.tldp.org/docs.html#howto>.
291 If you don't know what to do here, say N.
293 config PARISC_CPU_TOPOLOGY
294 bool "Support cpu topology definition"
298 Support PARISC cpu topology definition.
301 bool "Multi-core scheduler support"
302 depends on PARISC_CPU_TOPOLOGY && PA8X00
304 Multi-core scheduler support improves the CPU scheduler's decision
305 making when dealing with multi-core CPU chips at a cost of slightly
306 increased overhead in some places. If unsure say N here.
309 bool "Use separate kernel stacks when processing interrupts"
312 If you say Y here the kernel will use separate kernel stacks
313 for handling hard and soft interrupts. This can help avoid
314 overflowing the process kernel stacks.
317 bool "Use page table locks in TLB fault handler"
321 Select this option to enable page table locking in the TLB
322 fault handler. This ensures that page table entries are
323 updated consistently on SMP machines at the expense of some
330 config ARCH_SELECT_MEMORY_MODEL
334 config ARCH_SPARSEMEM_ENABLE
338 config ARCH_FLATMEM_ENABLE
341 config ARCH_SPARSEMEM_DEFAULT
343 depends on ARCH_SPARSEMEM_ENABLE
345 source "kernel/Kconfig.hz"
351 config SYSVIPC_COMPAT
353 depends on COMPAT && SYSVIPC
359 int "Maximum number of CPUs (2-32)"
365 bool "Kexec system call"
368 kexec is a system call that implements the ability to shutdown your
369 current kernel, and to start another kernel. It is like a reboot
370 but it is independent of the system firmware. And like a reboot
371 you can start any kernel with it, not just Linux.
373 It is an ongoing process to be certain the hardware in a machine
374 shutdown, so do not be surprised if this code does not
375 initially work for you.
378 bool "kexec file based system call"
382 This enables the kexec_file_load() System call. This is
383 file based and takes file descriptors as system call argument
384 for kernel and initramfs as opposed to list of segments as
385 accepted by previous system call.
389 source "drivers/firmware/Kconfig"
391 source "drivers/parisc/Kconfig"