1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T if !64BIT
6 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_HUGETLBFS if PA20
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 GENERIC_LIB_DEVMEM_IS_ALLOWED
40 select SYSCTL_ARCH_UNALIGN_ALLOW
41 select SYSCTL_EXCEPTION_TRACE
42 select HAVE_MOD_ARCH_SPECIFIC
44 select MODULES_USE_ELF_RELA
45 select CLONE_BACKWARDS
46 select TTY # Needed for pdc_cons.c
47 select HAVE_DEBUG_STACKOVERFLOW
48 select HAVE_ARCH_AUDITSYSCALL
50 select HAVE_ARCH_JUMP_LABEL
51 select HAVE_ARCH_JUMP_LABEL_RELATIVE
52 select HAVE_ARCH_SECCOMP_FILTER
53 select HAVE_ARCH_TRACEHOOK
54 select HAVE_REGS_AND_STACK_ACCESS_API
55 select GENERIC_SCHED_CLOCK
56 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
57 select LEGACY_TIMER_TICK
58 select CPU_NO_EFFICIENT_FFS
59 select NEED_DMA_MAP_STATE
60 select NEED_SG_DMA_LENGTH
63 select HAVE_KRETPROBES
64 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
65 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
66 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
67 select HAVE_KPROBES_ON_FTRACE
68 select HAVE_DYNAMIC_FTRACE_WITH_REGS
69 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
73 The PA-RISC microprocessor is designed by Hewlett-Packard and used
74 in many of their workstations & servers (HP9000 700 and 800 series,
75 and later HP3000 series). The PA-RISC Linux project home page is
76 at <https://parisc.wiki.kernel.org>.
89 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT
90 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT
92 config GENERIC_LOCKBREAK
95 depends on SMP && PREEMPTION
97 config ARCH_HAS_ILOG2_U32
101 config ARCH_HAS_ILOG2_U64
110 config GENERIC_HWEIGHT
114 config GENERIC_CALIBRATE_DELAY
123 # unless you want to implement ACPI on PA-RISC ... ;-)
127 config STACKTRACE_SUPPORT
133 config ARCH_MAY_HAVE_PC_FDC
138 config PGTABLE_LEVELS
140 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
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
204 config PARISC_HUGE_KERNEL
205 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
208 def_bool y if PARISC_HUGE_KERNEL
209 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
212 If you configure the kernel to include many drivers built-in instead
213 as modules, the kernel executable may become too big, so that the
214 linker will not be able to resolve some long branches and fails to link
215 your vmlinux kernel. In that case enabling this option will help you
216 to overcome this limit by using the -mlong-calls compiler option.
218 Usually you want to say N here, unless you e.g. want to build
219 a kernel which includes all necessary drivers built-in and which can
220 be used for TFTP booting without the need to have an initrd ramdisk.
222 Enabling this option will probably slow down your kernel.
228 Enable this if you want to support 64bit kernel on PA-RISC platform.
230 At the moment, only people willing to use more than 2GB of RAM,
231 or having a 64bit-only capable PA-RISC machine should say Y here.
233 Since there is no 64bit userland on PA-RISC, there is no point to
234 enable this option otherwise. The 64bit kernel is significantly bigger
235 and slower than the 32bit one.
238 prompt "Kernel page size"
239 default PARISC_PAGE_SIZE_4KB
241 config PARISC_PAGE_SIZE_4KB
244 This lets you select the page size of the kernel. For best
245 performance, a page size of 16KB is recommended. For best
246 compatibility with 32bit applications, a page size of 4KB should be
247 selected (the vast majority of 32bit binaries work perfectly fine
248 with a larger page size).
250 4KB For best 32bit compatibility
251 16KB For best performance
252 64KB For best performance, might give more overhead.
254 If you don't know what to do, choose 4KB.
256 config PARISC_PAGE_SIZE_16KB
258 depends on PA8X00 && BROKEN
260 config PARISC_PAGE_SIZE_64KB
262 depends on PA8X00 && BROKEN
266 config PARISC_SELF_EXTRACT
267 bool "Build kernel as self-extracting executable"
270 Say Y if you want to build the parisc kernel as a kind of
271 self-extracting executable.
273 If you say N here, the kernel will be compressed with gzip
274 which can be loaded by the palo bootloader directly too.
276 If you don't know what to do here, say Y.
279 bool "Symmetric multi-processing support"
281 This enables support for systems with more than one CPU. If you have
282 a system with only one CPU, say N. If you have a system with more
285 If you say N here, the kernel will run on uni- and multiprocessor
286 machines, but will use only one CPU of a multiprocessor machine.
287 On a uniprocessor machine, the kernel will run faster if you say N.
289 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
290 available at <https://www.tldp.org/docs.html#howto>.
292 If you don't know what to do here, say N.
294 config PARISC_CPU_TOPOLOGY
295 bool "Support cpu topology definition"
299 Support PARISC cpu topology definition.
302 bool "Multi-core scheduler support"
303 depends on PARISC_CPU_TOPOLOGY && PA8X00
305 Multi-core scheduler support improves the CPU scheduler's decision
306 making when dealing with multi-core CPU chips at a cost of slightly
307 increased overhead in some places. If unsure say N here.
310 bool "Use separate kernel stacks when processing interrupts"
313 If you say Y here the kernel will use separate kernel stacks
314 for handling hard and soft interrupts. This can help avoid
315 overflowing the process kernel stacks.
318 bool "Use page table locks in TLB fault handler"
322 Select this option to enable page table locking in the TLB
323 fault handler. This ensures that page table entries are
324 updated consistently on SMP machines at the expense of some
331 config ARCH_SELECT_MEMORY_MODEL
335 config ARCH_SPARSEMEM_ENABLE
339 config ARCH_FLATMEM_ENABLE
342 config ARCH_SPARSEMEM_DEFAULT
344 depends on ARCH_SPARSEMEM_ENABLE
346 source "kernel/Kconfig.hz"
352 config SYSVIPC_COMPAT
354 depends on COMPAT && SYSVIPC
360 int "Maximum number of CPUs (2-32)"
366 bool "Kexec system call"
369 kexec is a system call that implements the ability to shutdown your
370 current kernel, and to start another kernel. It is like a reboot
371 but it is independent of the system firmware. And like a reboot
372 you can start any kernel with it, not just Linux.
374 It is an ongoing process to be certain the hardware in a machine
375 shutdown, so do not be surprised if this code does not
376 initially work for you.
379 bool "kexec file based system call"
383 This enables the kexec_file_load() System call. This is
384 file based and takes file descriptors as system call argument
385 for kernel and initramfs as opposed to list of segments as
386 accepted by previous system call.
390 source "drivers/firmware/Kconfig"
392 source "drivers/parisc/Kconfig"