xref: /openbmc/linux/arch/powerpc/Kconfig (revision b58c6630)
1# SPDX-License-Identifier: GPL-2.0
2source "arch/powerpc/platforms/Kconfig.cputype"
3
4config 32BIT
5	bool
6	default y if PPC32
7
8config 64BIT
9	bool
10	default y if PPC64
11
12config MMU
13	bool
14	default y
15
16config ARCH_MMAP_RND_BITS_MAX
17	# On Book3S 64, the default virtual address space for 64-bit processes
18	# is 2^47 (128TB). As a maximum, allow randomisation to consume up to
19	# 32T of address space (2^45), which should ensure a reasonable gap
20	# between bottom-up and top-down allocations for applications that
21	# consume "normal" amounts of address space. Book3S 64 only supports 64K
22	# and 4K page sizes.
23	default 29 if PPC_BOOK3S_64 && PPC_64K_PAGES # 29 = 45 (32T) - 16 (64K)
24	default 33 if PPC_BOOK3S_64		     # 33 = 45 (32T) - 12 (4K)
25	#
26	# On all other 64-bit platforms (currently only Book3E), the virtual
27	# address space is 2^46 (64TB). Allow randomisation to consume up to 16T
28	# of address space (2^44). Only 4K page sizes are supported.
29	default 32 if 64BIT	# 32 = 44 (16T) - 12 (4K)
30	#
31	# For 32-bit, use the compat values, as they're the same.
32	default ARCH_MMAP_RND_COMPAT_BITS_MAX
33
34config ARCH_MMAP_RND_BITS_MIN
35	# Allow randomisation to consume up to 1GB of address space (2^30).
36	default 14 if 64BIT && PPC_64K_PAGES	# 14 = 30 (1GB) - 16 (64K)
37	default 18 if 64BIT			# 18 = 30 (1GB) - 12 (4K)
38	#
39	# For 32-bit, use the compat values, as they're the same.
40	default ARCH_MMAP_RND_COMPAT_BITS_MIN
41
42config ARCH_MMAP_RND_COMPAT_BITS_MAX
43	# Total virtual address space for 32-bit processes is 2^31 (2GB).
44	# Allow randomisation to consume up to 512MB of address space (2^29).
45	default 11 if PPC_256K_PAGES	# 11 = 29 (512MB) - 18 (256K)
46	default 13 if PPC_64K_PAGES	# 13 = 29 (512MB) - 16 (64K)
47	default 15 if PPC_16K_PAGES	# 15 = 29 (512MB) - 14 (16K)
48	default 17			# 17 = 29 (512MB) - 12 (4K)
49
50config ARCH_MMAP_RND_COMPAT_BITS_MIN
51	# Total virtual address space for 32-bit processes is 2^31 (2GB).
52	# Allow randomisation to consume up to 8MB of address space (2^23).
53	default 5 if PPC_256K_PAGES	#  5 = 23 (8MB) - 18 (256K)
54	default 7 if PPC_64K_PAGES	#  7 = 23 (8MB) - 16 (64K)
55	default 9 if PPC_16K_PAGES	#  9 = 23 (8MB) - 14 (16K)
56	default 11			# 11 = 23 (8MB) - 12 (4K)
57
58config HAVE_SETUP_PER_CPU_AREA
59	def_bool PPC64
60
61config NEED_PER_CPU_EMBED_FIRST_CHUNK
62	def_bool PPC64
63
64config NR_IRQS
65	int "Number of virtual interrupt numbers"
66	range 32 32768
67	default "512"
68	help
69	  This defines the number of virtual interrupt numbers the kernel
70	  can manage. Virtual interrupt numbers are what you see in
71	  /proc/interrupts. If you configure your system to have too few,
72	  drivers will fail to load or worse - handle with care.
73
74config NMI_IPI
75	bool
76	depends on SMP && (DEBUGGER || KEXEC_CORE || HARDLOCKUP_DETECTOR)
77	default y
78
79config PPC_WATCHDOG
80	bool
81	depends on HARDLOCKUP_DETECTOR
82	depends on HAVE_HARDLOCKUP_DETECTOR_ARCH
83	default y
84	help
85	  This is a placeholder when the powerpc hardlockup detector
86	  watchdog is selected (arch/powerpc/kernel/watchdog.c). It is
87	  seleted via the generic lockup detector menu which is why we
88	  have no standalone config option for it here.
89
90config STACKTRACE_SUPPORT
91	bool
92	default y
93
94config TRACE_IRQFLAGS_SUPPORT
95	bool
96	default y
97
98config LOCKDEP_SUPPORT
99	bool
100	default y
101
102config GENERIC_LOCKBREAK
103	bool
104	default y
105	depends on SMP && PREEMPTION
106
107config GENERIC_HWEIGHT
108	bool
109	default y
110
111config PPC
112	bool
113	default y
114	#
115	# Please keep this list sorted alphabetically.
116	#
117	select ARCH_32BIT_OFF_T if PPC32
118	select ARCH_HAS_DEBUG_VIRTUAL
119	select ARCH_HAS_DEVMEM_IS_ALLOWED
120	select ARCH_HAS_ELF_RANDOMIZE
121	select ARCH_HAS_FORTIFY_SOURCE
122	select ARCH_HAS_GCOV_PROFILE_ALL
123	select ARCH_HAS_KCOV
124	select ARCH_HAS_HUGEPD			if HUGETLB_PAGE
125	select ARCH_HAS_MEMREMAP_COMPAT_ALIGN
126	select ARCH_HAS_MMIOWB			if PPC64
127	select ARCH_HAS_PHYS_TO_DMA
128	select ARCH_HAS_PMEM_API
129	select ARCH_HAS_PTE_DEVMAP		if PPC_BOOK3S_64
130	select ARCH_HAS_PTE_SPECIAL
131	select ARCH_HAS_MEMBARRIER_CALLBACKS
132	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64
133	select ARCH_HAS_STRICT_KERNEL_RWX	if ((PPC_BOOK3S_64 || PPC32) && !HIBERNATION)
134	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
135	select ARCH_HAS_UACCESS_FLUSHCACHE
136	select ARCH_HAS_UACCESS_MCSAFE		if PPC64
137	select ARCH_HAS_UBSAN_SANITIZE_ALL
138	select ARCH_HAVE_NMI_SAFE_CMPXCHG
139	select ARCH_KEEP_MEMBLOCK
140	select ARCH_MIGHT_HAVE_PC_PARPORT
141	select ARCH_MIGHT_HAVE_PC_SERIO
142	select ARCH_OPTIONAL_KERNEL_RWX		if ARCH_HAS_STRICT_KERNEL_RWX
143	select ARCH_SUPPORTS_ATOMIC_RMW
144	select ARCH_USE_BUILTIN_BSWAP
145	select ARCH_USE_CMPXCHG_LOCKREF		if PPC64
146	select ARCH_WANT_IPC_PARSE_VERSION
147	select ARCH_WEAK_RELEASE_ACQUIRE
148	select BINFMT_ELF
149	select BUILDTIME_TABLE_SORT
150	select CLONE_BACKWARDS
151	select DCACHE_WORD_ACCESS		if PPC64 && CPU_LITTLE_ENDIAN
152	select DYNAMIC_FTRACE			if FUNCTION_TRACER
153	select EDAC_ATOMIC_SCRUB
154	select EDAC_SUPPORT
155	select GENERIC_ATOMIC64			if PPC32
156	select GENERIC_CLOCKEVENTS
157	select GENERIC_CLOCKEVENTS_BROADCAST	if SMP
158	select GENERIC_CMOS_UPDATE
159	select GENERIC_CPU_AUTOPROBE
160	select GENERIC_CPU_VULNERABILITIES	if PPC_BARRIER_NOSPEC
161	select GENERIC_EARLY_IOREMAP
162	select GENERIC_IRQ_SHOW
163	select GENERIC_IRQ_SHOW_LEVEL
164	select GENERIC_PCI_IOMAP		if PCI
165	select GENERIC_SMP_IDLE_THREAD
166	select GENERIC_STRNCPY_FROM_USER
167	select GENERIC_STRNLEN_USER
168	select GENERIC_TIME_VSYSCALL
169	select HAVE_ARCH_AUDITSYSCALL
170	select HAVE_ARCH_HUGE_VMAP		if PPC_BOOK3S_64 && PPC_RADIX_MMU
171	select HAVE_ARCH_JUMP_LABEL
172	select HAVE_ARCH_KASAN			if PPC32
173	select HAVE_ARCH_KASAN_VMALLOC		if PPC32
174	select HAVE_ARCH_KGDB
175	select HAVE_ARCH_MMAP_RND_BITS
176	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
177	select HAVE_ARCH_NVRAM_OPS
178	select HAVE_ARCH_SECCOMP_FILTER
179	select HAVE_ARCH_TRACEHOOK
180	select HAVE_ASM_MODVERSIONS
181	select HAVE_C_RECORDMCOUNT
182	select HAVE_CBPF_JIT			if !PPC64
183	select HAVE_STACKPROTECTOR		if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13)
184	select HAVE_STACKPROTECTOR		if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2)
185	select HAVE_CONTEXT_TRACKING		if PPC64
186	select HAVE_TIF_NOHZ			if PPC64
187	select HAVE_COPY_THREAD_TLS
188	select HAVE_DEBUG_KMEMLEAK
189	select HAVE_DEBUG_STACKOVERFLOW
190	select HAVE_DYNAMIC_FTRACE
191	select HAVE_DYNAMIC_FTRACE_WITH_REGS	if MPROFILE_KERNEL
192	select HAVE_EBPF_JIT			if PPC64
193	select HAVE_EFFICIENT_UNALIGNED_ACCESS	if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
194	select HAVE_FAST_GUP
195	select HAVE_FTRACE_MCOUNT_RECORD
196	select HAVE_FUNCTION_ERROR_INJECTION
197	select HAVE_FUNCTION_GRAPH_TRACER
198	select HAVE_FUNCTION_TRACER
199	select HAVE_GCC_PLUGINS			if GCC_VERSION >= 50200   # plugin support on gcc <= 5.1 is buggy on PPC
200	select HAVE_HW_BREAKPOINT		if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
201	select HAVE_IDE
202	select HAVE_IOREMAP_PROT
203	select HAVE_IRQ_EXIT_ON_IRQ_STACK
204	select HAVE_KERNEL_GZIP
205	select HAVE_KERNEL_LZMA			if DEFAULT_UIMAGE
206	select HAVE_KERNEL_LZO			if DEFAULT_UIMAGE
207	select HAVE_KERNEL_XZ			if PPC_BOOK3S || 44x
208	select HAVE_KPROBES
209	select HAVE_KPROBES_ON_FTRACE
210	select HAVE_KRETPROBES
211	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
212	select HAVE_LIVEPATCH			if HAVE_DYNAMIC_FTRACE_WITH_REGS
213	select HAVE_MEMBLOCK_NODE_MAP
214	select HAVE_MOD_ARCH_SPECIFIC
215	select HAVE_NMI				if PERF_EVENTS || (PPC64 && PPC_BOOK3S)
216	select HAVE_HARDLOCKUP_DETECTOR_ARCH	if (PPC64 && PPC_BOOK3S)
217	select HAVE_OPROFILE
218	select HAVE_OPTPROBES			if PPC64
219	select HAVE_PERF_EVENTS
220	select HAVE_PERF_EVENTS_NMI		if PPC64
221	select HAVE_HARDLOCKUP_DETECTOR_PERF	if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH
222	select HAVE_PERF_REGS
223	select HAVE_PERF_USER_STACK_DUMP
224	select MMU_GATHER_RCU_TABLE_FREE
225	select MMU_GATHER_PAGE_SIZE
226	select HAVE_REGS_AND_STACK_ACCESS_API
227	select HAVE_RELIABLE_STACKTRACE		if PPC_BOOK3S_64 && CPU_LITTLE_ENDIAN
228	select HAVE_SYSCALL_TRACEPOINTS
229	select HAVE_VIRT_CPU_ACCOUNTING
230	select HAVE_IRQ_TIME_ACCOUNTING
231	select HAVE_RSEQ
232	select IOMMU_HELPER			if PPC64
233	select IRQ_DOMAIN
234	select IRQ_FORCED_THREADING
235	select MODULES_USE_ELF_RELA
236	select NEED_DMA_MAP_STATE		if PPC64 || NOT_COHERENT_CACHE
237	select NEED_SG_DMA_LENGTH
238	select OF
239	select OF_DMA_DEFAULT_COHERENT		if !NOT_COHERENT_CACHE
240	select OF_EARLY_FLATTREE
241	select OLD_SIGACTION			if PPC32
242	select OLD_SIGSUSPEND
243	select PCI_DOMAINS			if PCI
244	select PCI_SYSCALL			if PCI
245	select PPC_DAWR				if PPC64
246	select RTC_LIB
247	select SPARSE_IRQ
248	select SYSCTL_EXCEPTION_TRACE
249	select THREAD_INFO_IN_TASK
250	select VIRT_TO_BUS			if !PPC64
251	#
252	# Please keep this list sorted alphabetically.
253	#
254
255config PPC_BARRIER_NOSPEC
256	bool
257	default y
258	depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E
259
260config EARLY_PRINTK
261	bool
262	default y
263
264config PANIC_TIMEOUT
265	int
266	default 180
267
268config COMPAT
269	bool "Enable support for 32bit binaries"
270	depends on PPC64
271	default y if !CPU_LITTLE_ENDIAN
272	select COMPAT_BINFMT_ELF
273	select ARCH_WANT_OLD_COMPAT_IPC
274	select COMPAT_OLD_SIGACTION
275
276config SYSVIPC_COMPAT
277	bool
278	depends on COMPAT && SYSVIPC
279	default y
280
281config SCHED_OMIT_FRAME_POINTER
282	bool
283	default y
284
285config ARCH_MAY_HAVE_PC_FDC
286	bool
287	default PCI
288
289config PPC_UDBG_16550
290	bool
291
292config GENERIC_TBSYNC
293	bool
294	default y if PPC32 && SMP
295
296config AUDIT_ARCH
297	bool
298	default y
299
300config GENERIC_BUG
301	bool
302	default y
303	depends on BUG
304
305config SYS_SUPPORTS_APM_EMULATION
306	default y if PMAC_APM_EMU
307	bool
308
309config EPAPR_BOOT
310	bool
311	help
312	  Used to allow a board to specify it wants an ePAPR compliant wrapper.
313
314config DEFAULT_UIMAGE
315	bool
316	help
317	  Used to allow a board to specify it wants a uImage built by default
318
319config ARCH_HIBERNATION_POSSIBLE
320	bool
321	default y
322
323config ARCH_SUSPEND_POSSIBLE
324	def_bool y
325	depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
326		   (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
327		   || 44x || 40x
328
329config ARCH_SUSPEND_NONZERO_CPU
330	def_bool y
331	depends on PPC_POWERNV || PPC_PSERIES
332
333config PPC_DCR_NATIVE
334	bool
335
336config PPC_DCR_MMIO
337	bool
338
339config PPC_DCR
340	bool
341	depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
342	default y
343
344config PPC_OF_PLATFORM_PCI
345	bool
346	depends on PCI
347	depends on PPC64 # not supported on 32 bits yet
348
349config ARCH_SUPPORTS_DEBUG_PAGEALLOC
350	depends on PPC32 || PPC_BOOK3S_64
351	def_bool y
352
353config ARCH_SUPPORTS_UPROBES
354	def_bool y
355
356config PPC_ADV_DEBUG_REGS
357	bool
358	depends on 40x || BOOKE
359	default y
360
361config PPC_ADV_DEBUG_IACS
362	int
363	depends on PPC_ADV_DEBUG_REGS
364	default 4 if 44x
365	default 2
366
367config PPC_ADV_DEBUG_DACS
368	int
369	depends on PPC_ADV_DEBUG_REGS
370	default 2
371
372config PPC_ADV_DEBUG_DVCS
373	int
374	depends on PPC_ADV_DEBUG_REGS
375	default 2 if 44x
376	default 0
377
378config PPC_ADV_DEBUG_DAC_RANGE
379	bool
380	depends on PPC_ADV_DEBUG_REGS && 44x
381	default y
382
383config PPC_DAWR
384	bool
385
386config ZONE_DMA
387	bool
388	default y if PPC_BOOK3E_64
389
390config PGTABLE_LEVELS
391	int
392	default 2 if !PPC64
393	default 4
394
395source "arch/powerpc/sysdev/Kconfig"
396source "arch/powerpc/platforms/Kconfig"
397
398menu "Kernel options"
399
400config HIGHMEM
401	bool "High memory support"
402	depends on PPC32
403
404source "kernel/Kconfig.hz"
405
406config HUGETLB_PAGE_SIZE_VARIABLE
407	bool
408	depends on HUGETLB_PAGE && PPC_BOOK3S_64
409	default y
410
411config MATH_EMULATION
412	bool "Math emulation"
413	depends on 4xx || PPC_8xx || PPC_MPC832x || BOOKE
414	help
415	  Some PowerPC chips designed for embedded applications do not have
416	  a floating-point unit and therefore do not implement the
417	  floating-point instructions in the PowerPC instruction set.  If you
418	  say Y here, the kernel will include code to emulate a floating-point
419	  unit, which will allow programs that use floating-point
420	  instructions to run.
421
422	  This is also useful to emulate missing (optional) instructions
423	  such as fsqrt on cores that do have an FPU but do not implement
424	  them (such as Freescale BookE).
425
426choice
427	prompt "Math emulation options"
428	default MATH_EMULATION_FULL
429	depends on MATH_EMULATION
430
431config	MATH_EMULATION_FULL
432	bool "Emulate all the floating point instructions"
433	help
434	  Select this option will enable the kernel to support to emulate
435	  all the floating point instructions. If your SoC doesn't have
436	  a FPU, you should select this.
437
438config MATH_EMULATION_HW_UNIMPLEMENTED
439	bool "Just emulate the FPU unimplemented instructions"
440	help
441	  Select this if you know there does have a hardware FPU on your
442	  SoC, but some floating point instructions are not implemented by that.
443
444endchoice
445
446config PPC_TRANSACTIONAL_MEM
447	bool "Transactional Memory support for POWERPC"
448	depends on PPC_BOOK3S_64
449	depends on SMP
450	select ALTIVEC
451	select VSX
452	help
453	  Support user-mode Transactional Memory on POWERPC.
454
455config PPC_UV
456	bool "Ultravisor support"
457	depends on KVM_BOOK3S_HV_POSSIBLE
458	depends on DEVICE_PRIVATE
459	default n
460	help
461	  This option paravirtualizes the kernel to run in POWER platforms that
462	  supports the Protected Execution Facility (PEF). On such platforms,
463	  the ultravisor firmware runs at a privilege level above the
464	  hypervisor.
465
466	  If unsure, say "N".
467
468config LD_HEAD_STUB_CATCH
469	bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT
470	depends on PPC64
471	help
472	  Very large kernels can cause linker branch stubs to be generated by
473	  code in head_64.S, which moves the head text sections out of their
474	  specified location. This option can work around the problem.
475
476	  If unsure, say "N".
477
478config MPROFILE_KERNEL
479	depends on PPC64 && CPU_LITTLE_ENDIAN
480	def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__)
481
482config HOTPLUG_CPU
483	bool "Support for enabling/disabling CPUs"
484	depends on SMP && (PPC_PSERIES || \
485		PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
486	help
487	  Say Y here to be able to disable and re-enable individual
488	  CPUs at runtime on SMP machines.
489
490	  Say N if you are unsure.
491
492config ARCH_CPU_PROBE_RELEASE
493	def_bool y
494	depends on HOTPLUG_CPU
495
496config ARCH_ENABLE_MEMORY_HOTPLUG
497	def_bool y
498
499config ARCH_ENABLE_MEMORY_HOTREMOVE
500	def_bool y
501
502config PPC64_SUPPORTS_MEMORY_FAILURE
503	bool "Add support for memory hwpoison"
504	depends on PPC_BOOK3S_64
505	default "y" if PPC_POWERNV
506	select ARCH_SUPPORTS_MEMORY_FAILURE
507
508config KEXEC
509	bool "kexec system call"
510	depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
511	select KEXEC_CORE
512	help
513	  kexec is a system call that implements the ability to shutdown your
514	  current kernel, and to start another kernel.  It is like a reboot
515	  but it is independent of the system firmware.   And like a reboot
516	  you can start any kernel with it, not just Linux.
517
518	  The name comes from the similarity to the exec system call.
519
520	  It is an ongoing process to be certain the hardware in a machine
521	  is properly shutdown, so do not be surprised if this code does not
522	  initially work for you.  As of this writing the exact hardware
523	  interface is strongly in flux, so no good recommendation can be
524	  made.
525
526config KEXEC_FILE
527	bool "kexec file based system call"
528	select KEXEC_CORE
529	select HAVE_IMA_KEXEC
530	select BUILD_BIN2C
531	select KEXEC_ELF
532	depends on PPC64
533	depends on CRYPTO=y
534	depends on CRYPTO_SHA256=y
535	help
536	  This is a new version of the kexec system call. This call is
537	  file based and takes in file descriptors as system call arguments
538	  for kernel and initramfs as opposed to a list of segments as is the
539	  case for the older kexec call.
540
541config ARCH_HAS_KEXEC_PURGATORY
542	def_bool KEXEC_FILE
543
544config RELOCATABLE
545	bool "Build a relocatable kernel"
546	depends on PPC64 || (FLATMEM && (44x || FSL_BOOKE))
547	select NONSTATIC_KERNEL
548	select MODULE_REL_CRCS if MODVERSIONS
549	help
550	  This builds a kernel image that is capable of running at the
551	  location the kernel is loaded at. For ppc32, there is no any
552	  alignment restrictions, and this feature is a superset of
553	  DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
554	  16k-aligned base address. The kernel is linked as a
555	  position-independent executable (PIE) and contains dynamic relocations
556	  which are processed early in the bootup process.
557
558	  One use is for the kexec on panic case where the recovery kernel
559	  must live at a different physical address than the primary
560	  kernel.
561
562	  Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
563	  it has been loaded at and the compile time physical addresses
564	  CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
565	  setting can still be useful to bootwrappers that need to know the
566	  load address of the kernel (eg. u-boot/mkimage).
567
568config RANDOMIZE_BASE
569	bool "Randomize the address of the kernel image"
570	depends on (FSL_BOOKE && FLATMEM && PPC32)
571	depends on RELOCATABLE
572	help
573	  Randomizes the virtual address at which the kernel image is
574	  loaded, as a security feature that deters exploit attempts
575	  relying on knowledge of the location of kernel internals.
576
577	  If unsure, say Y.
578
579config RELOCATABLE_TEST
580	bool "Test relocatable kernel"
581	depends on (PPC64 && RELOCATABLE)
582	help
583	  This runs the relocatable kernel at the address it was initially
584	  loaded at, which tends to be non-zero and therefore test the
585	  relocation code.
586
587config CRASH_DUMP
588	bool "Build a dump capture kernel"
589	depends on PPC64 || PPC_BOOK3S_32 || FSL_BOOKE || (44x && !SMP)
590	select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
591	help
592	  Build a kernel suitable for use as a dump capture kernel.
593	  The same kernel binary can be used as production kernel and dump
594	  capture kernel.
595
596config FA_DUMP
597	bool "Firmware-assisted dump"
598	depends on PPC64 && (PPC_RTAS || PPC_POWERNV)
599	select CRASH_CORE
600	select CRASH_DUMP
601	help
602	  A robust mechanism to get reliable kernel crash dump with
603	  assistance from firmware. This approach does not use kexec,
604	  instead firmware assists in booting the capture kernel
605	  while preserving memory contents. Firmware-assisted dump
606	  is meant to be a kdump replacement offering robustness and
607	  speed not possible without system firmware assistance.
608
609	  If unsure, say "y". Only special kernels like petitboot may
610	  need to say "N" here.
611
612config PRESERVE_FA_DUMP
613	bool "Preserve Firmware-assisted dump"
614	depends on PPC64 && PPC_POWERNV && !FA_DUMP
615	help
616	  On a kernel with FA_DUMP disabled, this option helps to preserve
617	  crash data from a previously crash'ed kernel. Useful when the next
618	  memory preserving kernel boot would process this crash data.
619	  Petitboot kernel is the typical usecase for this option.
620
621config OPAL_CORE
622	bool "Export OPAL memory as /sys/firmware/opal/core"
623	depends on PPC64 && PPC_POWERNV
624	help
625	  This option uses the MPIPL support in firmware to provide an
626	  ELF core of OPAL memory after a crash. The ELF core is exported
627	  as /sys/firmware/opal/core file which is helpful in debugging
628	  OPAL crashes using GDB.
629
630config IRQ_ALL_CPUS
631	bool "Distribute interrupts on all CPUs by default"
632	depends on SMP
633	help
634	  This option gives the kernel permission to distribute IRQs across
635	  multiple CPUs.  Saying N here will route all IRQs to the first
636	  CPU.  Generally saying Y is safe, although some problems have been
637	  reported with SMP Power Macintoshes with this option enabled.
638
639config NUMA
640	bool "NUMA support"
641	depends on PPC64
642	default y if SMP && PPC_PSERIES
643
644config NODES_SHIFT
645	int
646	default "8" if PPC64
647	default "4"
648	depends on NEED_MULTIPLE_NODES
649
650config USE_PERCPU_NUMA_NODE_ID
651	def_bool y
652	depends on NUMA
653
654config HAVE_MEMORYLESS_NODES
655	def_bool y
656	depends on NUMA
657
658config ARCH_SELECT_MEMORY_MODEL
659	def_bool y
660	depends on PPC64
661
662config ARCH_FLATMEM_ENABLE
663	def_bool y
664	depends on (PPC64 && !NUMA) || PPC32
665
666config ARCH_SPARSEMEM_ENABLE
667	def_bool y
668	depends on PPC64
669	select SPARSEMEM_VMEMMAP_ENABLE
670
671config ARCH_SPARSEMEM_DEFAULT
672	def_bool y
673	depends on PPC_BOOK3S_64
674
675config SYS_SUPPORTS_HUGETLBFS
676	bool
677
678config ILLEGAL_POINTER_VALUE
679	hex
680	# This is roughly half way between the top of user space and the bottom
681	# of kernel space, which seems about as good as we can get.
682	default 0x5deadbeef0000000 if PPC64
683	default 0
684
685config ARCH_MEMORY_PROBE
686	def_bool y
687	depends on MEMORY_HOTPLUG
688
689# Some NUMA nodes have memory ranges that span
690# other nodes.  Even though a pfn is valid and
691# between a node's start and end pfns, it may not
692# reside on that node.  See memmap_init_zone()
693# for details.
694config NODES_SPAN_OTHER_NODES
695	def_bool y
696	depends on NEED_MULTIPLE_NODES
697
698config STDBINUTILS
699	bool "Using standard binutils settings"
700	depends on 44x
701	default y
702	help
703	  Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
704	  Note, that kernel will be able to run only those applications,
705	  which had been compiled using binutils later than 2.17.50.0.3 with
706	  '-zmax-page-size' set to 256K (the default is 64K). Or, if using
707	  the older binutils, you can patch them with a trivial patch, which
708	  changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
709
710choice
711	prompt "Page size"
712	default PPC_4K_PAGES
713	help
714	  Select the kernel logical page size. Increasing the page size
715	  will reduce software overhead at each page boundary, allow
716	  hardware prefetch mechanisms to be more effective, and allow
717	  larger dma transfers increasing IO efficiency and reducing
718	  overhead. However the utilization of memory will increase.
719	  For example, each cached file will using a multiple of the
720	  page size to hold its contents and the difference between the
721	  end of file and the end of page is wasted.
722
723	  Some dedicated systems, such as software raid serving with
724	  accelerated calculations, have shown significant increases.
725
726	  If you configure a 64 bit kernel for 64k pages but the
727	  processor does not support them, then the kernel will simulate
728	  them with 4k pages, loading them on demand, but with the
729	  reduced software overhead and larger internal fragmentation.
730	  For the 32 bit kernel, a large page option will not be offered
731	  unless it is supported by the configured processor.
732
733	  If unsure, choose 4K_PAGES.
734
735config PPC_4K_PAGES
736	bool "4k page size"
737	select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
738
739config PPC_16K_PAGES
740	bool "16k page size"
741	depends on 44x || PPC_8xx
742
743config PPC_64K_PAGES
744	bool "64k page size"
745	depends on 44x || PPC_BOOK3S_64
746	select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
747
748config PPC_256K_PAGES
749	bool "256k page size"
750	depends on 44x && !STDBINUTILS
751	help
752	  Make the page size 256k.
753
754	  As the ELF standard only requires alignment to support page
755	  sizes up to 64k, you will need to compile all of your user
756	  space applications with a non-standard binutils settings
757	  (see the STDBINUTILS description for details).
758
759	  Say N unless you know what you are doing.
760
761endchoice
762
763config PPC_PAGE_SHIFT
764	int
765	default 18 if PPC_256K_PAGES
766	default 16 if PPC_64K_PAGES
767	default 14 if PPC_16K_PAGES
768	default 12
769
770config THREAD_SHIFT
771	int "Thread shift" if EXPERT
772	range 13 15
773	default "15" if PPC_256K_PAGES
774	default "14" if PPC64
775	default "13"
776	help
777	  Used to define the stack size. The default is almost always what you
778	  want. Only change this if you know what you are doing.
779
780config ETEXT_SHIFT_BOOL
781	bool "Set custom etext alignment" if STRICT_KERNEL_RWX && \
782					     (PPC_BOOK3S_32 || PPC_8xx)
783	depends on ADVANCED_OPTIONS
784	help
785	  This option allows you to set the kernel end of text alignment. When
786	  RAM is mapped by blocks, the alignment needs to fit the size and
787	  number of possible blocks. The default should be OK for most configs.
788
789	  Say N here unless you know what you are doing.
790
791config ETEXT_SHIFT
792	int "_etext shift" if ETEXT_SHIFT_BOOL
793	range 17 28 if STRICT_KERNEL_RWX && PPC_BOOK3S_32
794	range 19 23 if STRICT_KERNEL_RWX && PPC_8xx
795	default 17 if STRICT_KERNEL_RWX && PPC_BOOK3S_32
796	default 19 if STRICT_KERNEL_RWX && PPC_8xx
797	default PPC_PAGE_SHIFT
798	help
799	  On Book3S 32 (603+), IBATs are used to map kernel text.
800	  Smaller is the alignment, greater is the number of necessary IBATs.
801
802	  On 8xx, large pages (512kb or 8M) are used to map kernel linear
803	  memory. Aligning to 8M reduces TLB misses as only 8M pages are used
804	  in that case.
805
806config DATA_SHIFT_BOOL
807	bool "Set custom data alignment" if STRICT_KERNEL_RWX && \
808					    (PPC_BOOK3S_32 || PPC_8xx)
809	depends on ADVANCED_OPTIONS
810	help
811	  This option allows you to set the kernel data alignment. When
812	  RAM is mapped by blocks, the alignment needs to fit the size and
813	  number of possible blocks. The default should be OK for most configs.
814
815	  Say N here unless you know what you are doing.
816
817config DATA_SHIFT
818	int "Data shift" if DATA_SHIFT_BOOL
819	default 24 if STRICT_KERNEL_RWX && PPC64
820	range 17 28 if STRICT_KERNEL_RWX && PPC_BOOK3S_32
821	range 19 23 if STRICT_KERNEL_RWX && PPC_8xx
822	default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32
823	default 23 if STRICT_KERNEL_RWX && PPC_8xx
824	default PPC_PAGE_SHIFT
825	help
826	  On Book3S 32 (603+), DBATs are used to map kernel text and rodata RO.
827	  Smaller is the alignment, greater is the number of necessary DBATs.
828
829	  On 8xx, large pages (512kb or 8M) are used to map kernel linear
830	  memory. Aligning to 8M reduces TLB misses as only 8M pages are used
831	  in that case.
832
833config FORCE_MAX_ZONEORDER
834	int "Maximum zone order"
835	range 8 9 if PPC64 && PPC_64K_PAGES
836	default "9" if PPC64 && PPC_64K_PAGES
837	range 13 13 if PPC64 && !PPC_64K_PAGES
838	default "13" if PPC64 && !PPC_64K_PAGES
839	range 9 64 if PPC32 && PPC_16K_PAGES
840	default "9" if PPC32 && PPC_16K_PAGES
841	range 7 64 if PPC32 && PPC_64K_PAGES
842	default "7" if PPC32 && PPC_64K_PAGES
843	range 5 64 if PPC32 && PPC_256K_PAGES
844	default "5" if PPC32 && PPC_256K_PAGES
845	range 11 64
846	default "11"
847	help
848	  The kernel memory allocator divides physically contiguous memory
849	  blocks into "zones", where each zone is a power of two number of
850	  pages.  This option selects the largest power of two that the kernel
851	  keeps in the memory allocator.  If you need to allocate very large
852	  blocks of physically contiguous memory, then you may need to
853	  increase this value.
854
855	  This config option is actually maximum order plus one. For example,
856	  a value of 11 means that the largest free memory block is 2^10 pages.
857
858	  The page size is not necessarily 4KB.  For example, on 64-bit
859	  systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
860	  this in mind when choosing a value for this option.
861
862config PPC_SUBPAGE_PROT
863	bool "Support setting protections for 4k subpages"
864	depends on PPC_BOOK3S_64 && PPC_64K_PAGES
865	help
866	  This option adds support for a system call to allow user programs
867	  to set access permissions (read/write, readonly, or no access)
868	  on the 4k subpages of each 64k page.
869
870config PPC_COPRO_BASE
871	bool
872
873config SCHED_SMT
874	bool "SMT (Hyperthreading) scheduler support"
875	depends on PPC64 && SMP
876	help
877	  SMT scheduler support improves the CPU scheduler's decision making
878	  when dealing with POWER5 cpus at a cost of slightly increased
879	  overhead in some places. If unsure say N here.
880
881config PPC_DENORMALISATION
882	bool "PowerPC denormalisation exception handling"
883	depends on PPC_BOOK3S_64
884	default "y" if PPC_POWERNV
885	help
886	  Add support for handling denormalisation of single precision
887	  values.  Useful for bare metal only.  If unsure say Y here.
888
889config CMDLINE_BOOL
890	bool "Default bootloader kernel arguments"
891
892config CMDLINE
893	string "Initial kernel command string" if CMDLINE_BOOL
894	default "console=ttyS0,9600 console=tty0 root=/dev/sda2" if CMDLINE_BOOL
895	default ""
896	help
897	  On some platforms, there is currently no way for the boot loader to
898	  pass arguments to the kernel. For these platforms, you can supply
899	  some command-line options at build time by entering them here.  In
900	  most cases you will need to specify the root device here.
901
902choice
903	prompt "Kernel command line type" if CMDLINE != ""
904	default CMDLINE_FROM_BOOTLOADER
905
906config CMDLINE_FROM_BOOTLOADER
907	bool "Use bootloader kernel arguments if available"
908	help
909	  Uses the command-line options passed by the boot loader. If
910	  the boot loader doesn't provide any, the default kernel command
911	  string provided in CMDLINE will be used.
912
913config CMDLINE_EXTEND
914	bool "Extend bootloader kernel arguments"
915	help
916	  The command-line arguments provided by the boot loader will be
917	  appended to the default kernel command string.
918
919config CMDLINE_FORCE
920	bool "Always use the default kernel command string"
921	help
922	  Always use the default kernel command string, even if the boot
923	  loader passes other arguments to the kernel.
924	  This is useful if you cannot or don't want to change the
925	  command-line options your boot loader passes to the kernel.
926
927endchoice
928
929config EXTRA_TARGETS
930	string "Additional default image types"
931	help
932	  List additional targets to be built by the bootwrapper here (separated
933	  by spaces).  This is useful for targets that depend of device tree
934	  files in the .dts directory.
935
936	  Targets in this list will be build as part of the default build
937	  target, or when the user does a 'make zImage' or a
938	  'make zImage.initrd'.
939
940	  If unsure, leave blank
941
942config ARCH_WANTS_FREEZER_CONTROL
943	def_bool y
944	depends on ADB_PMU
945
946source "kernel/power/Kconfig"
947
948config SECCOMP
949	bool "Enable seccomp to safely compute untrusted bytecode"
950	depends on PROC_FS
951	default y
952	help
953	  This kernel feature is useful for number crunching applications
954	  that may need to compute untrusted bytecode during their
955	  execution. By using pipes or other transports made available to
956	  the process as file descriptors supporting the read/write
957	  syscalls, it's possible to isolate those applications in
958	  their own address space using seccomp. Once seccomp is
959	  enabled via /proc/<pid>/seccomp, it cannot be disabled
960	  and the task is only allowed to execute a few safe syscalls
961	  defined by each seccomp mode.
962
963	  If unsure, say Y. Only embedded should say N here.
964
965config PPC_MEM_KEYS
966	prompt "PowerPC Memory Protection Keys"
967	def_bool y
968	depends on PPC_BOOK3S_64
969	select ARCH_USES_HIGH_VMA_FLAGS
970	select ARCH_HAS_PKEYS
971	help
972	  Memory Protection Keys provides a mechanism for enforcing
973	  page-based protections, but without requiring modification of the
974	  page tables when an application changes protection domains.
975
976	  For details, see Documentation/core-api/protection-keys.rst
977
978	  If unsure, say y.
979
980config PPC_SECURE_BOOT
981	prompt "Enable secure boot support"
982	bool
983	depends on PPC_POWERNV
984	depends on IMA_ARCH_POLICY
985	imply IMA_SECURE_AND_OR_TRUSTED_BOOT
986	help
987	  Systems with firmware secure boot enabled need to define security
988	  policies to extend secure boot to the OS. This config allows a user
989	  to enable OS secure boot on systems that have firmware support for
990	  it. If in doubt say N.
991
992config PPC_SECVAR_SYSFS
993	bool "Enable sysfs interface for POWER secure variables"
994	default y
995	depends on PPC_SECURE_BOOT
996	depends on SYSFS
997	help
998	  POWER secure variables are managed and controlled by firmware.
999	  These variables are exposed to userspace via sysfs to enable
1000	  read/write operations on these variables. Say Y if you have
1001	  secure boot enabled and want to expose variables to userspace.
1002
1003endmenu
1004
1005config ISA_DMA_API
1006	bool
1007	default PCI
1008
1009menu "Bus options"
1010
1011config ISA
1012	bool "Support for ISA-bus hardware"
1013	depends on PPC_CHRP
1014	select PPC_I8259
1015	help
1016	  Find out whether you have ISA slots on your motherboard.  ISA is the
1017	  name of a bus system, i.e. the way the CPU talks to the other stuff
1018	  inside your box.  If you have an Apple machine, say N here; if you
1019	  have an IBM RS/6000 or pSeries machine, say Y.  If you have an
1020	  embedded board, consult your board documentation.
1021
1022config GENERIC_ISA_DMA
1023	bool
1024	depends on ISA_DMA_API
1025	default y
1026
1027config PPC_INDIRECT_PCI
1028	bool
1029	depends on PCI
1030	default y if 40x || 44x
1031
1032config SBUS
1033	bool
1034
1035config FSL_SOC
1036	bool
1037
1038config FSL_PCI
1039	bool
1040	select ARCH_HAS_DMA_SET_MASK
1041	select PPC_INDIRECT_PCI
1042	select PCI_QUIRKS
1043
1044config FSL_PMC
1045	bool
1046	default y
1047	depends on SUSPEND && (PPC_85xx || PPC_86xx)
1048	help
1049	  Freescale MPC85xx/MPC86xx power management controller support
1050	  (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
1051
1052config PPC4xx_CPM
1053	bool
1054	default y
1055	depends on SUSPEND && (44x || 40x)
1056	help
1057	  PPC4xx Clock Power Management (CPM) support (suspend/resume).
1058	  It also enables support for two different idle states (idle-wait
1059	  and idle-doze).
1060
1061config 4xx_SOC
1062	bool
1063
1064config FSL_LBC
1065	bool "Freescale Local Bus support"
1066	help
1067	  Enables reporting of errors from the Freescale local bus
1068	  controller.  Also contains some common code used by
1069	  drivers for specific local bus peripherals.
1070
1071config FSL_GTM
1072	bool
1073	depends on PPC_83xx || QUICC_ENGINE || CPM2
1074	help
1075	  Freescale General-purpose Timers support
1076
1077config PCI_8260
1078	bool
1079	depends on PCI && 8260
1080	select PPC_INDIRECT_PCI
1081	default y
1082
1083config FSL_RIO
1084	bool "Freescale Embedded SRIO Controller support"
1085	depends on RAPIDIO = y && HAVE_RAPIDIO
1086	default "n"
1087	help
1088	  Include support for RapidIO controller on Freescale embedded
1089	  processors (MPC8548, MPC8641, etc).
1090
1091endmenu
1092
1093config NONSTATIC_KERNEL
1094	bool
1095
1096menu "Advanced setup"
1097	depends on PPC32
1098
1099config ADVANCED_OPTIONS
1100	bool "Prompt for advanced kernel configuration options"
1101	help
1102	  This option will enable prompting for a variety of advanced kernel
1103	  configuration options.  These options can cause the kernel to not
1104	  work if they are set incorrectly, but can be used to optimize certain
1105	  aspects of kernel memory management.
1106
1107	  Unless you know what you are doing, say N here.
1108
1109comment "Default settings for advanced configuration options are used"
1110	depends on !ADVANCED_OPTIONS
1111
1112config LOWMEM_SIZE_BOOL
1113	bool "Set maximum low memory"
1114	depends on ADVANCED_OPTIONS
1115	help
1116	  This option allows you to set the maximum amount of memory which
1117	  will be used as "low memory", that is, memory which the kernel can
1118	  access directly, without having to set up a kernel virtual mapping.
1119	  This can be useful in optimizing the layout of kernel virtual
1120	  memory.
1121
1122	  Say N here unless you know what you are doing.
1123
1124config LOWMEM_SIZE
1125	hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
1126	default "0x30000000"
1127
1128config LOWMEM_CAM_NUM_BOOL
1129	bool "Set number of CAMs to use to map low memory"
1130	depends on ADVANCED_OPTIONS && FSL_BOOKE
1131	help
1132	  This option allows you to set the maximum number of CAM slots that
1133	  will be used to map low memory.  There are a limited number of slots
1134	  available and even more limited number that will fit in the L1 MMU.
1135	  However, using more entries will allow mapping more low memory.  This
1136	  can be useful in optimizing the layout of kernel virtual memory.
1137
1138	  Say N here unless you know what you are doing.
1139
1140config LOWMEM_CAM_NUM
1141	depends on FSL_BOOKE
1142	int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
1143	default 3
1144
1145config DYNAMIC_MEMSTART
1146	bool "Enable page aligned dynamic load address for kernel"
1147	depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
1148	select NONSTATIC_KERNEL
1149	help
1150	  This option enables the kernel to be loaded at any page aligned
1151	  physical address. The kernel creates a mapping from KERNELBASE to
1152	  the address where the kernel is loaded. The page size here implies
1153	  the TLB page size of the mapping for kernel on the particular platform.
1154	  Please refer to the init code for finding the TLB page size.
1155
1156	  DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
1157	  kernel image, where the only restriction is the page aligned kernel
1158	  load address. When this option is enabled, the compile time physical
1159	  address CONFIG_PHYSICAL_START is ignored.
1160
1161	  This option is overridden by CONFIG_RELOCATABLE
1162
1163config PAGE_OFFSET_BOOL
1164	bool "Set custom page offset address"
1165	depends on ADVANCED_OPTIONS
1166	help
1167	  This option allows you to set the kernel virtual address at which
1168	  the kernel will map low memory.  This can be useful in optimizing
1169	  the virtual memory layout of the system.
1170
1171	  Say N here unless you know what you are doing.
1172
1173config PAGE_OFFSET
1174	hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
1175	default "0xc0000000"
1176
1177config KERNEL_START_BOOL
1178	bool "Set custom kernel base address"
1179	depends on ADVANCED_OPTIONS
1180	help
1181	  This option allows you to set the kernel virtual address at which
1182	  the kernel will be loaded.  Normally this should match PAGE_OFFSET
1183	  however there are times (like kdump) that one might not want them
1184	  to be the same.
1185
1186	  Say N here unless you know what you are doing.
1187
1188config KERNEL_START
1189	hex "Virtual address of kernel base" if KERNEL_START_BOOL
1190	default PAGE_OFFSET if PAGE_OFFSET_BOOL
1191	default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1192	default "0xc0000000"
1193
1194config PHYSICAL_START_BOOL
1195	bool "Set physical address where the kernel is loaded"
1196	depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1197	help
1198	  This gives the physical address where the kernel is loaded.
1199
1200	  Say N here unless you know what you are doing.
1201
1202config PHYSICAL_START
1203	hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1204	default "0x02000000" if PPC_BOOK3S && CRASH_DUMP && !NONSTATIC_KERNEL
1205	default "0x00000000"
1206
1207config PHYSICAL_ALIGN
1208	hex
1209	default "0x04000000" if FSL_BOOKE
1210	help
1211	  This value puts the alignment restrictions on physical address
1212	  where kernel is loaded and run from. Kernel is compiled for an
1213	  address which meets above alignment restriction.
1214
1215config TASK_SIZE_BOOL
1216	bool "Set custom user task size"
1217	depends on ADVANCED_OPTIONS
1218	help
1219	  This option allows you to set the amount of virtual address space
1220	  allocated to user tasks.  This can be useful in optimizing the
1221	  virtual memory layout of the system.
1222
1223	  Say N here unless you know what you are doing.
1224
1225config TASK_SIZE
1226	hex "Size of user task space" if TASK_SIZE_BOOL
1227	default "0x80000000" if PPC_8xx
1228	default "0xc0000000"
1229
1230config PIN_TLB
1231	bool "Pinned Kernel TLBs (860 ONLY)"
1232	depends on ADVANCED_OPTIONS && PPC_8xx && \
1233		   !DEBUG_PAGEALLOC && !STRICT_KERNEL_RWX
1234
1235config PIN_TLB_DATA
1236	bool "Pinned TLB for DATA"
1237	depends on PIN_TLB
1238	default y
1239
1240config PIN_TLB_IMMR
1241	bool "Pinned TLB for IMMR"
1242	depends on PIN_TLB || PPC_EARLY_DEBUG_CPM
1243	default y
1244
1245config PIN_TLB_TEXT
1246	bool "Pinned TLB for TEXT"
1247	depends on PIN_TLB
1248	default y
1249endmenu
1250
1251if PPC64
1252# This value must have zeroes in the bottom 60 bits otherwise lots will break
1253config PAGE_OFFSET
1254	hex
1255	default "0xc000000000000000"
1256config KERNEL_START
1257	hex
1258	default "0xc000000000000000"
1259config PHYSICAL_START
1260	hex
1261	default "0x00000000"
1262endif
1263
1264config	ARCH_RANDOM
1265	def_bool n
1266
1267config PPC_LIB_RHEAP
1268	bool
1269
1270source "arch/powerpc/kvm/Kconfig"
1271
1272source "kernel/livepatch/Kconfig"
1273