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_UBSAN_SANITIZE_ALL
15 select ARCH_NO_SG_CHAIN
16 select ARCH_SUPPORTS_MEMORY_FAILURE
18 select RTC_DRV_GENERIC
19 select INIT_ALL_POSSIBLE
21 select BUILDTIME_EXTABLE_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_STRNCPY_FROM_USER
37 select SYSCTL_ARCH_UNALIGN_ALLOW
38 select SYSCTL_EXCEPTION_TRACE
39 select ARCH_DISCARD_MEMBLOCK
40 select HAVE_MOD_ARCH_SPECIFIC
42 select MODULES_USE_ELF_RELA
43 select CLONE_BACKWARDS
44 select TTY # Needed for pdc_cons.c
45 select HAVE_DEBUG_STACKOVERFLOW
46 select HAVE_ARCH_AUDITSYSCALL
48 select HAVE_ARCH_JUMP_LABEL
49 select HAVE_ARCH_JUMP_LABEL_RELATIVE
50 select HAVE_ARCH_SECCOMP_FILTER
51 select HAVE_ARCH_TRACEHOOK
52 select HAVE_REGS_AND_STACK_ACCESS_API
53 select GENERIC_SCHED_CLOCK
54 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
55 select GENERIC_CLOCKEVENTS
56 select ARCH_NO_COHERENT_DMA_MMAP
57 select CPU_NO_EFFICIENT_FFS
58 select NEED_DMA_MAP_STATE
59 select NEED_SG_DMA_LENGTH
62 select HAVE_KRETPROBES
65 The PA-RISC microprocessor is designed by Hewlett-Packard and used
66 in many of their workstations & servers (HP9000 700 and 800 series,
67 and later HP3000 series). The PA-RISC Linux project home page is
68 at <http://www.parisc-linux.org/>.
79 config GENERIC_LOCKBREAK
82 depends on SMP && PREEMPT
84 config RWSEM_GENERIC_SPINLOCK
87 config RWSEM_XCHGADD_ALGORITHM
90 config ARCH_HAS_ILOG2_U32
94 config ARCH_HAS_ILOG2_U64
103 config GENERIC_HWEIGHT
107 config GENERIC_CALIBRATE_DELAY
116 # unless you want to implement ACPI on PA-RISC ... ;-)
120 config STACKTRACE_SUPPORT
126 config ARCH_MAY_HAVE_PC_FDC
131 config PGTABLE_LEVELS
133 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
136 config SYS_SUPPORTS_HUGETLBFS
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
196 select DMA_NONCOHERENT_CACHE_SYNC
200 depends on PA8X00 || PA7200
203 bool "Enable the -mlong-calls compiler option for big kernels"
207 If you configure the kernel to include many drivers built-in instead
208 as modules, the kernel executable may become too big, so that the
209 linker will not be able to resolve some long branches and fails to link
210 your vmlinux kernel. In that case enabling this option will help you
211 to overcome this limit by using the -mlong-calls compiler option.
213 Usually you want to say N here, unless you e.g. want to build
214 a kernel which includes all necessary drivers built-in and which can
215 be used for TFTP booting without the need to have an initrd ramdisk.
217 Enabling this option will probably slow down your kernel.
223 Enable this if you want to support 64bit kernel on PA-RISC platform.
225 At the moment, only people willing to use more than 2GB of RAM,
226 or having a 64bit-only capable PA-RISC machine should say Y here.
228 Since there is no 64bit userland on PA-RISC, there is no point to
229 enable this option otherwise. The 64bit kernel is significantly bigger
230 and slower than the 32bit one.
233 prompt "Kernel page size"
234 default PARISC_PAGE_SIZE_4KB
236 config PARISC_PAGE_SIZE_4KB
239 This lets you select the page size of the kernel. For best
240 performance, a page size of 16KB is recommended. For best
241 compatibility with 32bit applications, a page size of 4KB should be
242 selected (the vast majority of 32bit binaries work perfectly fine
243 with a larger page size).
245 4KB For best 32bit compatibility
246 16KB For best performance
247 64KB For best performance, might give more overhead.
249 If you don't know what to do, choose 4KB.
251 config PARISC_PAGE_SIZE_16KB
253 depends on PA8X00 && BROKEN
255 config PARISC_PAGE_SIZE_64KB
257 depends on PA8X00 && BROKEN
261 config PARISC_SELF_EXTRACT
262 bool "Build kernel as self-extracting executable"
265 Say Y if you want to build the parisc kernel as a kind of
266 self-extracting executable.
268 If you say N here, the kernel will be compressed with gzip
269 which can be loaded by the palo bootloader directly too.
271 If you don't know what to do here, say Y.
274 bool "Symmetric multi-processing support"
276 This enables support for systems with more than one CPU. If you have
277 a system with only one CPU, say N. If you have a system with more
280 If you say N here, the kernel will run on uni- and multiprocessor
281 machines, but will use only one CPU of a multiprocessor machine.
282 On a uniprocessor machine, the kernel will run faster if you say N.
284 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
285 available at <http://www.tldp.org/docs.html#howto>.
287 If you don't know what to do here, say N.
289 config PARISC_CPU_TOPOLOGY
290 bool "Support cpu topology definition"
294 Support PARISC cpu topology definition.
297 bool "Multi-core scheduler support"
298 depends on PARISC_CPU_TOPOLOGY && PA8X00
300 Multi-core scheduler support improves the CPU scheduler's decision
301 making when dealing with multi-core CPU chips at a cost of slightly
302 increased overhead in some places. If unsure say N here.
305 bool "Use separate kernel stacks when processing interrupts"
308 If you say Y here the kernel will use separate kernel stacks
309 for handling hard and soft interrupts. This can help avoid
310 overflowing the process kernel stacks.
316 config ARCH_SELECT_MEMORY_MODEL
320 config ARCH_SPARSEMEM_ENABLE
324 config ARCH_FLATMEM_ENABLE
327 config ARCH_SPARSEMEM_DEFAULT
329 depends on ARCH_SPARSEMEM_ENABLE
331 source "kernel/Kconfig.hz"
336 select COMPAT_BINFMT_ELF if BINFMT_ELF
338 config SYSVIPC_COMPAT
340 depends on COMPAT && SYSVIPC
346 int "Maximum number of CPUs (2-32)"
354 source "drivers/parisc/Kconfig"
358 prompt "Enable seccomp to safely compute untrusted bytecode"
360 This kernel feature is useful for number crunching applications
361 that may need to compute untrusted bytecode during their
362 execution. By using pipes or other transports made available to
363 the process as file descriptors supporting the read/write
364 syscalls, it's possible to isolate those applications in
365 their own address space using seccomp. Once seccomp is
366 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
367 and the task is only allowed to execute a few safe syscalls
368 defined by each seccomp mode.
370 If unsure, say Y. Only embedded should say N here.