1 # SPDX-License-Identifier: GPL-2.0
4 select ALTERNATE_USER_ADDRESS_SPACE
5 select ARCH_32BIT_OFF_T if !64BIT
6 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_STRICT_MODULE_RWX
14 select ARCH_HAS_UBSAN_SANITIZE_ALL
15 select ARCH_HAS_PTE_SPECIAL
16 select ARCH_NO_SG_CHAIN
17 select ARCH_SUPPORTS_HUGETLBFS if PA20
18 select ARCH_SUPPORTS_MEMORY_FAILURE
20 select ARCH_HAS_DEBUG_VM_PGTABLE
21 select HAVE_RELIABLE_STACKTRACE
24 select RTC_DRV_GENERIC
25 select INIT_ALL_POSSIBLE
27 select BUILDTIME_TABLE_SORT
29 select HAVE_PERF_EVENTS
30 select HAVE_KERNEL_BZIP2
31 select HAVE_KERNEL_GZIP
32 select HAVE_KERNEL_LZ4
33 select HAVE_KERNEL_LZMA
34 select HAVE_KERNEL_LZO
36 select GENERIC_ATOMIC64 if !64BIT
37 select GENERIC_IRQ_PROBE
38 select GENERIC_PCI_IOMAP
39 select ARCH_HAVE_NMI_SAFE_CMPXCHG
40 select GENERIC_SMP_IDLE_THREAD
41 select GENERIC_ARCH_TOPOLOGY if SMP
42 select GENERIC_CPU_DEVICES if !SMP
43 select GENERIC_LIB_DEVMEM_IS_ALLOWED
44 select SYSCTL_ARCH_UNALIGN_ALLOW
45 select SYSCTL_EXCEPTION_TRACE
46 select HAVE_MOD_ARCH_SPECIFIC
48 select MODULES_USE_ELF_RELA
49 select CLONE_BACKWARDS
50 select TTY # Needed for pdc_cons.c
51 select HAVE_DEBUG_STACKOVERFLOW
52 select HAVE_ARCH_AUDITSYSCALL
54 select HAVE_ARCH_JUMP_LABEL
55 select HAVE_ARCH_JUMP_LABEL_RELATIVE
56 select HAVE_ARCH_KFENCE
57 select HAVE_ARCH_SECCOMP_FILTER
58 select HAVE_ARCH_TRACEHOOK
59 select HAVE_REGS_AND_STACK_ACCESS_API
60 select GENERIC_SCHED_CLOCK
61 select GENERIC_IRQ_MIGRATION if SMP
62 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
63 select LEGACY_TIMER_TICK
64 select CPU_NO_EFFICIENT_FFS
65 select THREAD_INFO_IN_TASK
66 select NEED_DMA_MAP_STATE
67 select NEED_SG_DMA_LENGTH
70 select HAVE_KRETPROBES
71 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
72 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
73 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
74 select HAVE_KPROBES_ON_FTRACE
75 select HAVE_DYNAMIC_FTRACE_WITH_REGS
76 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
77 select TRACE_IRQFLAGS_SUPPORT
78 select HAVE_FUNCTION_DESCRIPTORS if 64BIT
81 The PA-RISC microprocessor is designed by Hewlett-Packard and used
82 in many of their workstations & servers (HP9000 700 and 800 series,
83 and later HP3000 series). The PA-RISC Linux project home page is
84 at <https://parisc.wiki.kernel.org>.
95 config GENERIC_LOCKBREAK
98 depends on SMP && PREEMPTION
100 config ARCH_HAS_ILOG2_U32
104 config ARCH_HAS_ILOG2_U64
113 config GENERIC_HWEIGHT
117 config GENERIC_CALIBRATE_DELAY
126 # unless you want to implement ACPI on PA-RISC ... ;-)
130 config STACKTRACE_SUPPORT
136 config ARCH_MAY_HAVE_PC_FDC
141 config PGTABLE_LEVELS
143 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
146 menu "Processor type and features"
149 prompt "Processor type"
155 This is the processor type of your CPU. This information is
156 used for optimizing purposes. In order to compile a kernel
157 that can run on all 32-bit PA CPUs (albeit not optimally fast),
158 you can specify "PA7000" here.
160 Specifying "PA8000" here will allow you to select a 64-bit kernel
161 which is required on some machines.
166 Select this option for the PCX-L processor, as used in the
167 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
168 D200, D210, D300, D310 and E-class
173 Select this option for the PCX-T' processor, as used in the
174 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
175 K100, K200, K210, K220, K400, K410 and K420
180 Select this option for the PCX-L2 processor, as used in the
181 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
182 D220, D230, D320 and D330.
187 Select this option for PCX-U to PCX-W2 processors.
191 # Define implied options from the CPU selection here
199 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
200 select ARCH_HAS_SYNC_DMA_FOR_CPU
201 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
205 depends on PA8X00 || PA7200
207 config PARISC_HUGE_KERNEL
208 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
211 def_bool y if PARISC_HUGE_KERNEL
212 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
215 If you configure the kernel to include many drivers built-in instead
216 as modules, the kernel executable may become too big, so that the
217 linker will not be able to resolve some long branches and fails to link
218 your vmlinux kernel. In that case enabling this option will help you
219 to overcome this limit by using the -mlong-calls compiler option.
221 Usually you want to say N here, unless you e.g. want to build
222 a kernel which includes all necessary drivers built-in and which can
223 be used for TFTP booting without the need to have an initrd ramdisk.
225 Enabling this option will probably slow down your kernel.
231 Enable this if you want to support 64bit kernel on PA-RISC platform.
233 At the moment, only people willing to use more than 2GB of RAM,
234 or having a 64bit-only capable PA-RISC machine should say Y here.
236 Since there is no 64bit userland on PA-RISC, there is no point to
237 enable this option otherwise. The 64bit kernel is significantly bigger
238 and slower than the 32bit one.
241 prompt "Kernel page size"
242 default PARISC_PAGE_SIZE_4KB
244 config PARISC_PAGE_SIZE_4KB
247 This lets you select the page size of the kernel. For best
248 performance, a page size of 16KB is recommended. For best
249 compatibility with 32bit applications, a page size of 4KB should be
250 selected (the vast majority of 32bit binaries work perfectly fine
251 with a larger page size).
253 4KB For best 32bit compatibility
254 16KB For best performance
255 64KB For best performance, might give more overhead.
257 If you don't know what to do, choose 4KB.
259 config PARISC_PAGE_SIZE_16KB
261 depends on PA8X00 && BROKEN && !KFENCE
263 config PARISC_PAGE_SIZE_64KB
265 depends on PA8X00 && BROKEN && !KFENCE
270 bool "Symmetric multi-processing support"
272 This enables support for systems with more than one CPU. If you have
273 a system with only one CPU, say N. If you have a system with more
276 If you say N here, the kernel will run on uni- and multiprocessor
277 machines, but will use only one CPU of a multiprocessor machine.
278 On a uniprocessor machine, the kernel will run faster if you say N.
280 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
281 available at <https://www.tldp.org/docs.html#howto>.
283 If you don't know what to do here, say N.
286 bool "Multi-core scheduler support"
287 depends on GENERIC_ARCH_TOPOLOGY && PA8X00
289 Multi-core scheduler support improves the CPU scheduler's decision
290 making when dealing with multi-core CPU chips at a cost of slightly
291 increased overhead in some places. If unsure say N here.
294 bool "Use separate kernel stacks when processing interrupts"
297 If you say Y here the kernel will use separate kernel stacks
298 for handling hard and soft interrupts. This can help avoid
299 overflowing the process kernel stacks.
302 bool "Use page table locks in TLB fault handler"
306 Select this option to enable page table locking in the TLB
307 fault handler. This ensures that page table entries are
308 updated consistently on SMP machines at the expense of some
315 config ARCH_SELECT_MEMORY_MODEL
319 config ARCH_SPARSEMEM_ENABLE
323 config ARCH_FLATMEM_ENABLE
326 config ARCH_SPARSEMEM_DEFAULT
328 depends on ARCH_SPARSEMEM_ENABLE
330 source "kernel/Kconfig.hz"
340 int "Maximum number of CPUs (2-32)"
347 bool "Kexec system call"
350 kexec is a system call that implements the ability to shutdown your
351 current kernel, and to start another kernel. It is like a reboot
352 but it is independent of the system firmware. And like a reboot
353 you can start any kernel with it, not just Linux.
355 It is an ongoing process to be certain the hardware in a machine
356 shutdown, so do not be surprised if this code does not
357 initially work for you.
360 bool "kexec file based system call"
364 This enables the kexec_file_load() System call. This is
365 file based and takes file descriptors as system call argument
366 for kernel and initramfs as opposed to list of segments as
367 accepted by previous system call.
371 source "drivers/parisc/Kconfig"