xref: /linux/arch/mips/Kconfig (revision a4fd8414659bf470e2146b352574bbd274e54b7a)
1# SPDX-License-Identifier: GPL-2.0
2config MIPS
3	bool
4	default y
5	select ARCH_32BIT_OFF_T if !64BIT
6	select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7	select ARCH_HAS_FORTIFY_SOURCE
8	select ARCH_HAS_KCOV
9	select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
10	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11	select ARCH_HAS_UBSAN_SANITIZE_ALL
12	select ARCH_SUPPORTS_UPROBES
13	select ARCH_USE_BUILTIN_BSWAP
14	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15	select ARCH_USE_QUEUED_RWLOCKS
16	select ARCH_USE_QUEUED_SPINLOCKS
17	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
18	select ARCH_WANT_IPC_PARSE_VERSION
19	select BUILDTIME_TABLE_SORT
20	select CLONE_BACKWARDS
21	select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
22	select CPU_PM if CPU_IDLE
23	select GENERIC_ATOMIC64 if !64BIT
24	select GENERIC_CLOCKEVENTS
25	select GENERIC_CMOS_UPDATE
26	select GENERIC_CPU_AUTOPROBE
27	select GENERIC_GETTIMEOFDAY
28	select GENERIC_IOMAP
29	select GENERIC_IRQ_PROBE
30	select GENERIC_IRQ_SHOW
31	select GENERIC_ISA_DMA if EISA
32	select GENERIC_LIB_ASHLDI3
33	select GENERIC_LIB_ASHRDI3
34	select GENERIC_LIB_CMPDI2
35	select GENERIC_LIB_LSHRDI3
36	select GENERIC_LIB_UCMPDI2
37	select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
38	select GENERIC_SMP_IDLE_THREAD
39	select GENERIC_TIME_VSYSCALL
40	select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
41	select HANDLE_DOMAIN_IRQ
42	select HAVE_ARCH_COMPILER_H
43	select HAVE_ARCH_JUMP_LABEL
44	select HAVE_ARCH_KGDB
45	select HAVE_ARCH_MMAP_RND_BITS if MMU
46	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
47	select HAVE_ARCH_SECCOMP_FILTER
48	select HAVE_ARCH_TRACEHOOK
49	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
50	select HAVE_ASM_MODVERSIONS
51	select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
52	select HAVE_CONTEXT_TRACKING
53	select HAVE_TIF_NOHZ
54	select HAVE_C_RECORDMCOUNT
55	select HAVE_DEBUG_KMEMLEAK
56	select HAVE_DEBUG_STACKOVERFLOW
57	select HAVE_DMA_CONTIGUOUS
58	select HAVE_DYNAMIC_FTRACE
59	select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
60	select HAVE_EXIT_THREAD
61	select HAVE_FAST_GUP
62	select HAVE_FTRACE_MCOUNT_RECORD
63	select HAVE_FUNCTION_GRAPH_TRACER
64	select HAVE_FUNCTION_TRACER
65	select HAVE_GCC_PLUGINS
66	select HAVE_GENERIC_VDSO
67	select HAVE_IDE
68	select HAVE_IOREMAP_PROT
69	select HAVE_IRQ_EXIT_ON_IRQ_STACK
70	select HAVE_IRQ_TIME_ACCOUNTING
71	select HAVE_KPROBES
72	select HAVE_KRETPROBES
73	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
74	select HAVE_MOD_ARCH_SPECIFIC
75	select HAVE_NMI
76	select HAVE_OPROFILE
77	select HAVE_PERF_EVENTS
78	select HAVE_REGS_AND_STACK_ACCESS_API
79	select HAVE_RSEQ
80	select HAVE_SPARSE_SYSCALL_NR
81	select HAVE_STACKPROTECTOR
82	select HAVE_SYSCALL_TRACEPOINTS
83	select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
84	select IRQ_FORCED_THREADING
85	select ISA if EISA
86	select MODULES_USE_ELF_REL if MODULES
87	select MODULES_USE_ELF_RELA if MODULES && 64BIT
88	select PERF_USE_VMALLOC
89	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
90	select RTC_LIB
91	select SYSCTL_EXCEPTION_TRACE
92	select VIRT_TO_BUS
93
94config MIPS_FIXUP_BIGPHYS_ADDR
95	bool
96
97config MIPS_GENERIC
98	bool
99
100config MACH_INGENIC
101	bool
102	select SYS_SUPPORTS_32BIT_KERNEL
103	select SYS_SUPPORTS_LITTLE_ENDIAN
104	select SYS_SUPPORTS_ZBOOT
105	select DMA_NONCOHERENT
106	select IRQ_MIPS_CPU
107	select PINCTRL
108	select GPIOLIB
109	select COMMON_CLK
110	select GENERIC_IRQ_CHIP
111	select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
112	select USE_OF
113	select CPU_SUPPORTS_CPUFREQ
114	select MIPS_EXTERNAL_TIMER
115
116menu "Machine selection"
117
118choice
119	prompt "System type"
120	default MIPS_GENERIC_KERNEL
121
122config MIPS_GENERIC_KERNEL
123	bool "Generic board-agnostic MIPS kernel"
124	select MIPS_GENERIC
125	select BOOT_RAW
126	select BUILTIN_DTB
127	select CEVT_R4K
128	select CLKSRC_MIPS_GIC
129	select COMMON_CLK
130	select CPU_MIPSR2_IRQ_EI
131	select CPU_MIPSR2_IRQ_VI
132	select CSRC_R4K
133	select DMA_PERDEV_COHERENT
134	select HAVE_PCI
135	select IRQ_MIPS_CPU
136	select MIPS_AUTO_PFN_OFFSET
137	select MIPS_CPU_SCACHE
138	select MIPS_GIC
139	select MIPS_L1_CACHE_SHIFT_7
140	select NO_EXCEPT_FILL
141	select PCI_DRIVERS_GENERIC
142	select SMP_UP if SMP
143	select SWAP_IO_SPACE
144	select SYS_HAS_CPU_MIPS32_R1
145	select SYS_HAS_CPU_MIPS32_R2
146	select SYS_HAS_CPU_MIPS32_R6
147	select SYS_HAS_CPU_MIPS64_R1
148	select SYS_HAS_CPU_MIPS64_R2
149	select SYS_HAS_CPU_MIPS64_R6
150	select SYS_SUPPORTS_32BIT_KERNEL
151	select SYS_SUPPORTS_64BIT_KERNEL
152	select SYS_SUPPORTS_BIG_ENDIAN
153	select SYS_SUPPORTS_HIGHMEM
154	select SYS_SUPPORTS_LITTLE_ENDIAN
155	select SYS_SUPPORTS_MICROMIPS
156	select SYS_SUPPORTS_MIPS16
157	select SYS_SUPPORTS_MIPS_CPS
158	select SYS_SUPPORTS_MULTITHREADING
159	select SYS_SUPPORTS_RELOCATABLE
160	select SYS_SUPPORTS_SMARTMIPS
161	select SYS_SUPPORTS_ZBOOT
162	select UHI_BOOT
163	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
164	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
165	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
166	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
167	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
168	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
169	select USE_OF
170	help
171	  Select this to build a kernel which aims to support multiple boards,
172	  generally using a flattened device tree passed from the bootloader
173	  using the boot protocol defined in the UHI (Unified Hosting
174	  Interface) specification.
175
176config MIPS_ALCHEMY
177	bool "Alchemy processor based machines"
178	select PHYS_ADDR_T_64BIT
179	select CEVT_R4K
180	select CSRC_R4K
181	select IRQ_MIPS_CPU
182	select DMA_MAYBE_COHERENT	# Au1000,1500,1100 aren't, rest is
183	select MIPS_FIXUP_BIGPHYS_ADDR if PCI
184	select SYS_HAS_CPU_MIPS32_R1
185	select SYS_SUPPORTS_32BIT_KERNEL
186	select SYS_SUPPORTS_APM_EMULATION
187	select GPIOLIB
188	select SYS_SUPPORTS_ZBOOT
189	select COMMON_CLK
190
191config AR7
192	bool "Texas Instruments AR7"
193	select BOOT_ELF32
194	select DMA_NONCOHERENT
195	select CEVT_R4K
196	select CSRC_R4K
197	select IRQ_MIPS_CPU
198	select NO_EXCEPT_FILL
199	select SWAP_IO_SPACE
200	select SYS_HAS_CPU_MIPS32_R1
201	select SYS_HAS_EARLY_PRINTK
202	select SYS_SUPPORTS_32BIT_KERNEL
203	select SYS_SUPPORTS_LITTLE_ENDIAN
204	select SYS_SUPPORTS_MIPS16
205	select SYS_SUPPORTS_ZBOOT_UART16550
206	select GPIOLIB
207	select VLYNQ
208	select HAVE_LEGACY_CLK
209	help
210	  Support for the Texas Instruments AR7 System-on-a-Chip
211	  family: TNETD7100, 7200 and 7300.
212
213config ATH25
214	bool "Atheros AR231x/AR531x SoC support"
215	select CEVT_R4K
216	select CSRC_R4K
217	select DMA_NONCOHERENT
218	select IRQ_MIPS_CPU
219	select IRQ_DOMAIN
220	select SYS_HAS_CPU_MIPS32_R1
221	select SYS_SUPPORTS_BIG_ENDIAN
222	select SYS_SUPPORTS_32BIT_KERNEL
223	select SYS_HAS_EARLY_PRINTK
224	help
225	  Support for Atheros AR231x and Atheros AR531x based boards
226
227config ATH79
228	bool "Atheros AR71XX/AR724X/AR913X based boards"
229	select ARCH_HAS_RESET_CONTROLLER
230	select BOOT_RAW
231	select CEVT_R4K
232	select CSRC_R4K
233	select DMA_NONCOHERENT
234	select GPIOLIB
235	select PINCTRL
236	select COMMON_CLK
237	select IRQ_MIPS_CPU
238	select SYS_HAS_CPU_MIPS32_R2
239	select SYS_HAS_EARLY_PRINTK
240	select SYS_SUPPORTS_32BIT_KERNEL
241	select SYS_SUPPORTS_BIG_ENDIAN
242	select SYS_SUPPORTS_MIPS16
243	select SYS_SUPPORTS_ZBOOT_UART_PROM
244	select USE_OF
245	select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
246	help
247	  Support for the Atheros AR71XX/AR724X/AR913X SoCs.
248
249config BMIPS_GENERIC
250	bool "Broadcom Generic BMIPS kernel"
251	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
252	select ARCH_HAS_PHYS_TO_DMA
253	select BOOT_RAW
254	select NO_EXCEPT_FILL
255	select USE_OF
256	select CEVT_R4K
257	select CSRC_R4K
258	select SYNC_R4K
259	select COMMON_CLK
260	select BCM6345_L1_IRQ
261	select BCM7038_L1_IRQ
262	select BCM7120_L2_IRQ
263	select BRCMSTB_L2_IRQ
264	select IRQ_MIPS_CPU
265	select DMA_NONCOHERENT
266	select SYS_SUPPORTS_32BIT_KERNEL
267	select SYS_SUPPORTS_LITTLE_ENDIAN
268	select SYS_SUPPORTS_BIG_ENDIAN
269	select SYS_SUPPORTS_HIGHMEM
270	select SYS_HAS_CPU_BMIPS32_3300
271	select SYS_HAS_CPU_BMIPS4350
272	select SYS_HAS_CPU_BMIPS4380
273	select SYS_HAS_CPU_BMIPS5000
274	select SWAP_IO_SPACE
275	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
276	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
277	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
278	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
279	select HARDIRQS_SW_RESEND
280	help
281	  Build a generic DT-based kernel image that boots on select
282	  BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
283	  box chips.  Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
284	  must be set appropriately for your board.
285
286config BCM47XX
287	bool "Broadcom BCM47XX based boards"
288	select BOOT_RAW
289	select CEVT_R4K
290	select CSRC_R4K
291	select DMA_NONCOHERENT
292	select HAVE_PCI
293	select IRQ_MIPS_CPU
294	select SYS_HAS_CPU_MIPS32_R1
295	select NO_EXCEPT_FILL
296	select SYS_SUPPORTS_32BIT_KERNEL
297	select SYS_SUPPORTS_LITTLE_ENDIAN
298	select SYS_SUPPORTS_MIPS16
299	select SYS_SUPPORTS_ZBOOT
300	select SYS_HAS_EARLY_PRINTK
301	select USE_GENERIC_EARLY_PRINTK_8250
302	select GPIOLIB
303	select LEDS_GPIO_REGISTER
304	select BCM47XX_NVRAM
305	select BCM47XX_SPROM
306	select BCM47XX_SSB if !BCM47XX_BCMA
307	help
308	  Support for BCM47XX based boards
309
310config BCM63XX
311	bool "Broadcom BCM63XX based boards"
312	select BOOT_RAW
313	select CEVT_R4K
314	select CSRC_R4K
315	select SYNC_R4K
316	select DMA_NONCOHERENT
317	select IRQ_MIPS_CPU
318	select SYS_SUPPORTS_32BIT_KERNEL
319	select SYS_SUPPORTS_BIG_ENDIAN
320	select SYS_HAS_EARLY_PRINTK
321	select SWAP_IO_SPACE
322	select GPIOLIB
323	select MIPS_L1_CACHE_SHIFT_4
324	select CLKDEV_LOOKUP
325	select HAVE_LEGACY_CLK
326	help
327	  Support for BCM63XX based boards
328
329config MIPS_COBALT
330	bool "Cobalt Server"
331	select CEVT_R4K
332	select CSRC_R4K
333	select CEVT_GT641XX
334	select DMA_NONCOHERENT
335	select FORCE_PCI
336	select I8253
337	select I8259
338	select IRQ_MIPS_CPU
339	select IRQ_GT641XX
340	select PCI_GT64XXX_PCI0
341	select SYS_HAS_CPU_NEVADA
342	select SYS_HAS_EARLY_PRINTK
343	select SYS_SUPPORTS_32BIT_KERNEL
344	select SYS_SUPPORTS_64BIT_KERNEL
345	select SYS_SUPPORTS_LITTLE_ENDIAN
346	select USE_GENERIC_EARLY_PRINTK_8250
347
348config MACH_DECSTATION
349	bool "DECstations"
350	select BOOT_ELF32
351	select CEVT_DS1287
352	select CEVT_R4K if CPU_R4X00
353	select CSRC_IOASIC
354	select CSRC_R4K if CPU_R4X00
355	select CPU_DADDI_WORKAROUNDS if 64BIT
356	select CPU_R4000_WORKAROUNDS if 64BIT
357	select CPU_R4400_WORKAROUNDS if 64BIT
358	select DMA_NONCOHERENT
359	select NO_IOPORT_MAP
360	select IRQ_MIPS_CPU
361	select SYS_HAS_CPU_R3000
362	select SYS_HAS_CPU_R4X00
363	select SYS_SUPPORTS_32BIT_KERNEL
364	select SYS_SUPPORTS_64BIT_KERNEL
365	select SYS_SUPPORTS_LITTLE_ENDIAN
366	select SYS_SUPPORTS_128HZ
367	select SYS_SUPPORTS_256HZ
368	select SYS_SUPPORTS_1024HZ
369	select MIPS_L1_CACHE_SHIFT_4
370	help
371	  This enables support for DEC's MIPS based workstations.  For details
372	  see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
373	  DECstation porting pages on <http://decstation.unix-ag.org/>.
374
375	  If you have one of the following DECstation Models you definitely
376	  want to choose R4xx0 for the CPU Type:
377
378		DECstation 5000/50
379		DECstation 5000/150
380		DECstation 5000/260
381		DECsystem 5900/260
382
383	  otherwise choose R3000.
384
385config MACH_JAZZ
386	bool "Jazz family of machines"
387	select ARC_MEMORY
388	select ARC_PROMLIB
389	select ARCH_MIGHT_HAVE_PC_PARPORT
390	select ARCH_MIGHT_HAVE_PC_SERIO
391	select DMA_OPS
392	select FW_ARC
393	select FW_ARC32
394	select ARCH_MAY_HAVE_PC_FDC
395	select CEVT_R4K
396	select CSRC_R4K
397	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
398	select GENERIC_ISA_DMA
399	select HAVE_PCSPKR_PLATFORM
400	select IRQ_MIPS_CPU
401	select I8253
402	select I8259
403	select ISA
404	select SYS_HAS_CPU_R4X00
405	select SYS_SUPPORTS_32BIT_KERNEL
406	select SYS_SUPPORTS_64BIT_KERNEL
407	select SYS_SUPPORTS_100HZ
408	help
409	  This a family of machines based on the MIPS R4030 chipset which was
410	  used by several vendors to build RISC/os and Windows NT workstations.
411	  Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
412	  Olivetti M700-10 workstations.
413
414config MACH_INGENIC_SOC
415	bool "Ingenic SoC based machines"
416	select MIPS_GENERIC
417	select MACH_INGENIC
418	select SYS_SUPPORTS_ZBOOT_UART16550
419
420config LANTIQ
421	bool "Lantiq based platforms"
422	select DMA_NONCOHERENT
423	select IRQ_MIPS_CPU
424	select CEVT_R4K
425	select CSRC_R4K
426	select SYS_HAS_CPU_MIPS32_R1
427	select SYS_HAS_CPU_MIPS32_R2
428	select SYS_SUPPORTS_BIG_ENDIAN
429	select SYS_SUPPORTS_32BIT_KERNEL
430	select SYS_SUPPORTS_MIPS16
431	select SYS_SUPPORTS_MULTITHREADING
432	select SYS_SUPPORTS_VPE_LOADER
433	select SYS_HAS_EARLY_PRINTK
434	select GPIOLIB
435	select SWAP_IO_SPACE
436	select BOOT_RAW
437	select CLKDEV_LOOKUP
438	select HAVE_LEGACY_CLK
439	select USE_OF
440	select PINCTRL
441	select PINCTRL_LANTIQ
442	select ARCH_HAS_RESET_CONTROLLER
443	select RESET_CONTROLLER
444
445config MACH_LOONGSON32
446	bool "Loongson 32-bit family of machines"
447	select SYS_SUPPORTS_ZBOOT
448	help
449	  This enables support for the Loongson-1 family of machines.
450
451	  Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
452	  the Institute of Computing Technology (ICT), Chinese Academy of
453	  Sciences (CAS).
454
455config MACH_LOONGSON2EF
456	bool "Loongson-2E/F family of machines"
457	select SYS_SUPPORTS_ZBOOT
458	help
459	  This enables the support of early Loongson-2E/F family of machines.
460
461config MACH_LOONGSON64
462	bool "Loongson 64-bit family of machines"
463	select ARCH_SPARSEMEM_ENABLE
464	select ARCH_MIGHT_HAVE_PC_PARPORT
465	select ARCH_MIGHT_HAVE_PC_SERIO
466	select GENERIC_ISA_DMA_SUPPORT_BROKEN
467	select BOOT_ELF32
468	select BOARD_SCACHE
469	select CSRC_R4K
470	select CEVT_R4K
471	select CPU_HAS_WB
472	select FORCE_PCI
473	select ISA
474	select I8259
475	select IRQ_MIPS_CPU
476	select NO_EXCEPT_FILL
477	select NR_CPUS_DEFAULT_64
478	select USE_GENERIC_EARLY_PRINTK_8250
479	select PCI_DRIVERS_GENERIC
480	select SYS_HAS_CPU_LOONGSON64
481	select SYS_HAS_EARLY_PRINTK
482	select SYS_SUPPORTS_SMP
483	select SYS_SUPPORTS_HOTPLUG_CPU
484	select SYS_SUPPORTS_NUMA
485	select SYS_SUPPORTS_64BIT_KERNEL
486	select SYS_SUPPORTS_HIGHMEM
487	select SYS_SUPPORTS_LITTLE_ENDIAN
488	select SYS_SUPPORTS_ZBOOT
489	select ZONE_DMA32
490	select NUMA
491	select SMP
492	select COMMON_CLK
493	select USE_OF
494	select BUILTIN_DTB
495	select PCI_HOST_GENERIC
496	help
497	  This enables the support of Loongson-2/3 family of machines.
498
499	  Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
500	  GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
501	  and Loongson-2F which will be removed), developed by the Institute
502	  of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
503
504config MACH_PISTACHIO
505	bool "IMG Pistachio SoC based boards"
506	select BOOT_ELF32
507	select BOOT_RAW
508	select CEVT_R4K
509	select CLKSRC_MIPS_GIC
510	select COMMON_CLK
511	select CSRC_R4K
512	select DMA_NONCOHERENT
513	select GPIOLIB
514	select IRQ_MIPS_CPU
515	select MFD_SYSCON
516	select MIPS_CPU_SCACHE
517	select MIPS_GIC
518	select PINCTRL
519	select REGULATOR
520	select SYS_HAS_CPU_MIPS32_R2
521	select SYS_SUPPORTS_32BIT_KERNEL
522	select SYS_SUPPORTS_LITTLE_ENDIAN
523	select SYS_SUPPORTS_MIPS_CPS
524	select SYS_SUPPORTS_MULTITHREADING
525	select SYS_SUPPORTS_RELOCATABLE
526	select SYS_SUPPORTS_ZBOOT
527	select SYS_HAS_EARLY_PRINTK
528	select USE_GENERIC_EARLY_PRINTK_8250
529	select USE_OF
530	help
531	  This enables support for the IMG Pistachio SoC platform.
532
533config MIPS_MALTA
534	bool "MIPS Malta board"
535	select ARCH_MAY_HAVE_PC_FDC
536	select ARCH_MIGHT_HAVE_PC_PARPORT
537	select ARCH_MIGHT_HAVE_PC_SERIO
538	select BOOT_ELF32
539	select BOOT_RAW
540	select BUILTIN_DTB
541	select CEVT_R4K
542	select CLKSRC_MIPS_GIC
543	select COMMON_CLK
544	select CSRC_R4K
545	select DMA_MAYBE_COHERENT
546	select GENERIC_ISA_DMA
547	select HAVE_PCSPKR_PLATFORM
548	select HAVE_PCI
549	select I8253
550	select I8259
551	select IRQ_MIPS_CPU
552	select MIPS_BONITO64
553	select MIPS_CPU_SCACHE
554	select MIPS_GIC
555	select MIPS_L1_CACHE_SHIFT_6
556	select MIPS_MSC
557	select PCI_GT64XXX_PCI0
558	select SMP_UP if SMP
559	select SWAP_IO_SPACE
560	select SYS_HAS_CPU_MIPS32_R1
561	select SYS_HAS_CPU_MIPS32_R2
562	select SYS_HAS_CPU_MIPS32_R3_5
563	select SYS_HAS_CPU_MIPS32_R5
564	select SYS_HAS_CPU_MIPS32_R6
565	select SYS_HAS_CPU_MIPS64_R1
566	select SYS_HAS_CPU_MIPS64_R2
567	select SYS_HAS_CPU_MIPS64_R6
568	select SYS_HAS_CPU_NEVADA
569	select SYS_HAS_CPU_RM7000
570	select SYS_SUPPORTS_32BIT_KERNEL
571	select SYS_SUPPORTS_64BIT_KERNEL
572	select SYS_SUPPORTS_BIG_ENDIAN
573	select SYS_SUPPORTS_HIGHMEM
574	select SYS_SUPPORTS_LITTLE_ENDIAN
575	select SYS_SUPPORTS_MICROMIPS
576	select SYS_SUPPORTS_MIPS16
577	select SYS_SUPPORTS_MIPS_CMP
578	select SYS_SUPPORTS_MIPS_CPS
579	select SYS_SUPPORTS_MULTITHREADING
580	select SYS_SUPPORTS_RELOCATABLE
581	select SYS_SUPPORTS_SMARTMIPS
582	select SYS_SUPPORTS_VPE_LOADER
583	select SYS_SUPPORTS_ZBOOT
584	select USE_OF
585	select WAR_ICACHE_REFILLS
586	select ZONE_DMA32 if 64BIT
587	help
588	  This enables support for the MIPS Technologies Malta evaluation
589	  board.
590
591config MACH_PIC32
592	bool "Microchip PIC32 Family"
593	help
594	  This enables support for the Microchip PIC32 family of platforms.
595
596	  Microchip PIC32 is a family of general-purpose 32 bit MIPS core
597	  microcontrollers.
598
599config MACH_VR41XX
600	bool "NEC VR4100 series based machines"
601	select CEVT_R4K
602	select CSRC_R4K
603	select SYS_HAS_CPU_VR41XX
604	select SYS_SUPPORTS_MIPS16
605	select GPIOLIB
606
607config RALINK
608	bool "Ralink based machines"
609	select CEVT_R4K
610	select CSRC_R4K
611	select BOOT_RAW
612	select DMA_NONCOHERENT
613	select IRQ_MIPS_CPU
614	select USE_OF
615	select SYS_HAS_CPU_MIPS32_R1
616	select SYS_HAS_CPU_MIPS32_R2
617	select SYS_SUPPORTS_32BIT_KERNEL
618	select SYS_SUPPORTS_LITTLE_ENDIAN
619	select SYS_SUPPORTS_MIPS16
620	select SYS_SUPPORTS_ZBOOT
621	select SYS_HAS_EARLY_PRINTK
622	select CLKDEV_LOOKUP
623	select ARCH_HAS_RESET_CONTROLLER
624	select RESET_CONTROLLER
625
626config SGI_IP22
627	bool "SGI IP22 (Indy/Indigo2)"
628	select ARC_MEMORY
629	select ARC_PROMLIB
630	select FW_ARC
631	select FW_ARC32
632	select ARCH_MIGHT_HAVE_PC_SERIO
633	select BOOT_ELF32
634	select CEVT_R4K
635	select CSRC_R4K
636	select DEFAULT_SGI_PARTITION
637	select DMA_NONCOHERENT
638	select HAVE_EISA
639	select I8253
640	select I8259
641	select IP22_CPU_SCACHE
642	select IRQ_MIPS_CPU
643	select GENERIC_ISA_DMA_SUPPORT_BROKEN
644	select SGI_HAS_I8042
645	select SGI_HAS_INDYDOG
646	select SGI_HAS_HAL2
647	select SGI_HAS_SEEQ
648	select SGI_HAS_WD93
649	select SGI_HAS_ZILOG
650	select SWAP_IO_SPACE
651	select SYS_HAS_CPU_R4X00
652	select SYS_HAS_CPU_R5000
653	select SYS_HAS_EARLY_PRINTK
654	select SYS_SUPPORTS_32BIT_KERNEL
655	select SYS_SUPPORTS_64BIT_KERNEL
656	select SYS_SUPPORTS_BIG_ENDIAN
657	select WAR_R4600_V1_INDEX_ICACHEOP
658	select WAR_R4600_V1_HIT_CACHEOP
659	select WAR_R4600_V2_HIT_CACHEOP
660	select MIPS_L1_CACHE_SHIFT_7
661	help
662	  This are the SGI Indy, Challenge S and Indigo2, as well as certain
663	  OEM variants like the Tandem CMN B006S. To compile a Linux kernel
664	  that runs on these, say Y here.
665
666config SGI_IP27
667	bool "SGI IP27 (Origin200/2000)"
668	select ARCH_HAS_PHYS_TO_DMA
669	select ARCH_SPARSEMEM_ENABLE
670	select FW_ARC
671	select FW_ARC64
672	select ARC_CMDLINE_ONLY
673	select BOOT_ELF64
674	select DEFAULT_SGI_PARTITION
675	select SYS_HAS_EARLY_PRINTK
676	select HAVE_PCI
677	select IRQ_MIPS_CPU
678	select IRQ_DOMAIN_HIERARCHY
679	select NR_CPUS_DEFAULT_64
680	select PCI_DRIVERS_GENERIC
681	select PCI_XTALK_BRIDGE
682	select SYS_HAS_CPU_R10000
683	select SYS_SUPPORTS_64BIT_KERNEL
684	select SYS_SUPPORTS_BIG_ENDIAN
685	select SYS_SUPPORTS_NUMA
686	select SYS_SUPPORTS_SMP
687	select WAR_R10000_LLSC
688	select MIPS_L1_CACHE_SHIFT_7
689	select NUMA
690	help
691	  This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
692	  workstations.  To compile a Linux kernel that runs on these, say Y
693	  here.
694
695config SGI_IP28
696	bool "SGI IP28 (Indigo2 R10k)"
697	select ARC_MEMORY
698	select ARC_PROMLIB
699	select FW_ARC
700	select FW_ARC64
701	select ARCH_MIGHT_HAVE_PC_SERIO
702	select BOOT_ELF64
703	select CEVT_R4K
704	select CSRC_R4K
705	select DEFAULT_SGI_PARTITION
706	select DMA_NONCOHERENT
707	select GENERIC_ISA_DMA_SUPPORT_BROKEN
708	select IRQ_MIPS_CPU
709	select HAVE_EISA
710	select I8253
711	select I8259
712	select SGI_HAS_I8042
713	select SGI_HAS_INDYDOG
714	select SGI_HAS_HAL2
715	select SGI_HAS_SEEQ
716	select SGI_HAS_WD93
717	select SGI_HAS_ZILOG
718	select SWAP_IO_SPACE
719	select SYS_HAS_CPU_R10000
720	select SYS_HAS_EARLY_PRINTK
721	select SYS_SUPPORTS_64BIT_KERNEL
722	select SYS_SUPPORTS_BIG_ENDIAN
723	select WAR_R10000_LLSC
724	select MIPS_L1_CACHE_SHIFT_7
725	help
726	  This is the SGI Indigo2 with R10000 processor.  To compile a Linux
727	  kernel that runs on these, say Y here.
728
729config SGI_IP30
730	bool "SGI IP30 (Octane/Octane2)"
731	select ARCH_HAS_PHYS_TO_DMA
732	select FW_ARC
733	select FW_ARC64
734	select BOOT_ELF64
735	select CEVT_R4K
736	select CSRC_R4K
737	select SYNC_R4K if SMP
738	select ZONE_DMA32
739	select HAVE_PCI
740	select IRQ_MIPS_CPU
741	select IRQ_DOMAIN_HIERARCHY
742	select NR_CPUS_DEFAULT_2
743	select PCI_DRIVERS_GENERIC
744	select PCI_XTALK_BRIDGE
745	select SYS_HAS_EARLY_PRINTK
746	select SYS_HAS_CPU_R10000
747	select SYS_SUPPORTS_64BIT_KERNEL
748	select SYS_SUPPORTS_BIG_ENDIAN
749	select SYS_SUPPORTS_SMP
750	select WAR_R10000_LLSC
751	select MIPS_L1_CACHE_SHIFT_7
752	select ARC_MEMORY
753	help
754	  These are the SGI Octane and Octane2 graphics workstations.  To
755	  compile a Linux kernel that runs on these, say Y here.
756
757config SGI_IP32
758	bool "SGI IP32 (O2)"
759	select ARC_MEMORY
760	select ARC_PROMLIB
761	select ARCH_HAS_PHYS_TO_DMA
762	select FW_ARC
763	select FW_ARC32
764	select BOOT_ELF32
765	select CEVT_R4K
766	select CSRC_R4K
767	select DMA_NONCOHERENT
768	select HAVE_PCI
769	select IRQ_MIPS_CPU
770	select R5000_CPU_SCACHE
771	select RM7000_CPU_SCACHE
772	select SYS_HAS_CPU_R5000
773	select SYS_HAS_CPU_R10000 if BROKEN
774	select SYS_HAS_CPU_RM7000
775	select SYS_HAS_CPU_NEVADA
776	select SYS_SUPPORTS_64BIT_KERNEL
777	select SYS_SUPPORTS_BIG_ENDIAN
778	select WAR_ICACHE_REFILLS
779	help
780	  If you want this kernel to run on SGI O2 workstation, say Y here.
781
782config SIBYTE_CRHINE
783	bool "Sibyte BCM91120C-CRhine"
784	select BOOT_ELF32
785	select SIBYTE_BCM1120
786	select SWAP_IO_SPACE
787	select SYS_HAS_CPU_SB1
788	select SYS_SUPPORTS_BIG_ENDIAN
789	select SYS_SUPPORTS_LITTLE_ENDIAN
790
791config SIBYTE_CARMEL
792	bool "Sibyte BCM91120x-Carmel"
793	select BOOT_ELF32
794	select SIBYTE_BCM1120
795	select SWAP_IO_SPACE
796	select SYS_HAS_CPU_SB1
797	select SYS_SUPPORTS_BIG_ENDIAN
798	select SYS_SUPPORTS_LITTLE_ENDIAN
799
800config SIBYTE_CRHONE
801	bool "Sibyte BCM91125C-CRhone"
802	select BOOT_ELF32
803	select SIBYTE_BCM1125
804	select SWAP_IO_SPACE
805	select SYS_HAS_CPU_SB1
806	select SYS_SUPPORTS_BIG_ENDIAN
807	select SYS_SUPPORTS_HIGHMEM
808	select SYS_SUPPORTS_LITTLE_ENDIAN
809
810config SIBYTE_RHONE
811	bool "Sibyte BCM91125E-Rhone"
812	select BOOT_ELF32
813	select SIBYTE_BCM1125H
814	select SWAP_IO_SPACE
815	select SYS_HAS_CPU_SB1
816	select SYS_SUPPORTS_BIG_ENDIAN
817	select SYS_SUPPORTS_LITTLE_ENDIAN
818
819config SIBYTE_SWARM
820	bool "Sibyte BCM91250A-SWARM"
821	select BOOT_ELF32
822	select HAVE_PATA_PLATFORM
823	select SIBYTE_SB1250
824	select SWAP_IO_SPACE
825	select SYS_HAS_CPU_SB1
826	select SYS_SUPPORTS_BIG_ENDIAN
827	select SYS_SUPPORTS_HIGHMEM
828	select SYS_SUPPORTS_LITTLE_ENDIAN
829	select ZONE_DMA32 if 64BIT
830	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
831
832config SIBYTE_LITTLESUR
833	bool "Sibyte BCM91250C2-LittleSur"
834	select BOOT_ELF32
835	select HAVE_PATA_PLATFORM
836	select SIBYTE_SB1250
837	select SWAP_IO_SPACE
838	select SYS_HAS_CPU_SB1
839	select SYS_SUPPORTS_BIG_ENDIAN
840	select SYS_SUPPORTS_HIGHMEM
841	select SYS_SUPPORTS_LITTLE_ENDIAN
842	select ZONE_DMA32 if 64BIT
843
844config SIBYTE_SENTOSA
845	bool "Sibyte BCM91250E-Sentosa"
846	select BOOT_ELF32
847	select SIBYTE_SB1250
848	select SWAP_IO_SPACE
849	select SYS_HAS_CPU_SB1
850	select SYS_SUPPORTS_BIG_ENDIAN
851	select SYS_SUPPORTS_LITTLE_ENDIAN
852	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
853
854config SIBYTE_BIGSUR
855	bool "Sibyte BCM91480B-BigSur"
856	select BOOT_ELF32
857	select NR_CPUS_DEFAULT_4
858	select SIBYTE_BCM1x80
859	select SWAP_IO_SPACE
860	select SYS_HAS_CPU_SB1
861	select SYS_SUPPORTS_BIG_ENDIAN
862	select SYS_SUPPORTS_HIGHMEM
863	select SYS_SUPPORTS_LITTLE_ENDIAN
864	select ZONE_DMA32 if 64BIT
865	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
866
867config SNI_RM
868	bool "SNI RM200/300/400"
869	select ARC_MEMORY
870	select ARC_PROMLIB
871	select FW_ARC if CPU_LITTLE_ENDIAN
872	select FW_ARC32 if CPU_LITTLE_ENDIAN
873	select FW_SNIPROM if CPU_BIG_ENDIAN
874	select ARCH_MAY_HAVE_PC_FDC
875	select ARCH_MIGHT_HAVE_PC_PARPORT
876	select ARCH_MIGHT_HAVE_PC_SERIO
877	select BOOT_ELF32
878	select CEVT_R4K
879	select CSRC_R4K
880	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
881	select DMA_NONCOHERENT
882	select GENERIC_ISA_DMA
883	select HAVE_EISA
884	select HAVE_PCSPKR_PLATFORM
885	select HAVE_PCI
886	select IRQ_MIPS_CPU
887	select I8253
888	select I8259
889	select ISA
890	select MIPS_L1_CACHE_SHIFT_6
891	select SWAP_IO_SPACE if CPU_BIG_ENDIAN
892	select SYS_HAS_CPU_R4X00
893	select SYS_HAS_CPU_R5000
894	select SYS_HAS_CPU_R10000
895	select R5000_CPU_SCACHE
896	select SYS_HAS_EARLY_PRINTK
897	select SYS_SUPPORTS_32BIT_KERNEL
898	select SYS_SUPPORTS_64BIT_KERNEL
899	select SYS_SUPPORTS_BIG_ENDIAN
900	select SYS_SUPPORTS_HIGHMEM
901	select SYS_SUPPORTS_LITTLE_ENDIAN
902	select WAR_R4600_V2_HIT_CACHEOP
903	help
904	  The SNI RM200/300/400 are MIPS-based machines manufactured by
905	  Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
906	  Technology and now in turn merged with Fujitsu.  Say Y here to
907	  support this machine type.
908
909config MACH_TX39XX
910	bool "Toshiba TX39 series based machines"
911
912config MACH_TX49XX
913	bool "Toshiba TX49 series based machines"
914	select WAR_TX49XX_ICACHE_INDEX_INV
915
916config MIKROTIK_RB532
917	bool "Mikrotik RB532 boards"
918	select CEVT_R4K
919	select CSRC_R4K
920	select DMA_NONCOHERENT
921	select HAVE_PCI
922	select IRQ_MIPS_CPU
923	select SYS_HAS_CPU_MIPS32_R1
924	select SYS_SUPPORTS_32BIT_KERNEL
925	select SYS_SUPPORTS_LITTLE_ENDIAN
926	select SWAP_IO_SPACE
927	select BOOT_RAW
928	select GPIOLIB
929	select MIPS_L1_CACHE_SHIFT_4
930	help
931	  Support the Mikrotik(tm) RouterBoard 532 series,
932	  based on the IDT RC32434 SoC.
933
934config CAVIUM_OCTEON_SOC
935	bool "Cavium Networks Octeon SoC based boards"
936	select CEVT_R4K
937	select ARCH_HAS_PHYS_TO_DMA
938	select HAVE_RAPIDIO
939	select PHYS_ADDR_T_64BIT
940	select SYS_SUPPORTS_64BIT_KERNEL
941	select SYS_SUPPORTS_BIG_ENDIAN
942	select EDAC_SUPPORT
943	select EDAC_ATOMIC_SCRUB
944	select SYS_SUPPORTS_LITTLE_ENDIAN
945	select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
946	select SYS_HAS_EARLY_PRINTK
947	select SYS_HAS_CPU_CAVIUM_OCTEON
948	select HAVE_PCI
949	select HAVE_PLAT_DELAY
950	select HAVE_PLAT_FW_INIT_CMDLINE
951	select HAVE_PLAT_MEMCPY
952	select ZONE_DMA32
953	select HOLES_IN_ZONE
954	select GPIOLIB
955	select USE_OF
956	select ARCH_SPARSEMEM_ENABLE
957	select SYS_SUPPORTS_SMP
958	select NR_CPUS_DEFAULT_64
959	select MIPS_NR_CPU_NR_MAP_1024
960	select BUILTIN_DTB
961	select MTD_COMPLEX_MAPPINGS
962	select SWIOTLB
963	select SYS_SUPPORTS_RELOCATABLE
964	help
965	  This option supports all of the Octeon reference boards from Cavium
966	  Networks. It builds a kernel that dynamically determines the Octeon
967	  CPU type and supports all known board reference implementations.
968	  Some of the supported boards are:
969		EBT3000
970		EBH3000
971		EBH3100
972		Thunder
973		Kodama
974		Hikari
975	  Say Y here for most Octeon reference boards.
976
977config NLM_XLR_BOARD
978	bool "Netlogic XLR/XLS based systems"
979	select BOOT_ELF32
980	select NLM_COMMON
981	select SYS_HAS_CPU_XLR
982	select SYS_SUPPORTS_SMP
983	select HAVE_PCI
984	select SWAP_IO_SPACE
985	select SYS_SUPPORTS_32BIT_KERNEL
986	select SYS_SUPPORTS_64BIT_KERNEL
987	select PHYS_ADDR_T_64BIT
988	select SYS_SUPPORTS_BIG_ENDIAN
989	select SYS_SUPPORTS_HIGHMEM
990	select NR_CPUS_DEFAULT_32
991	select CEVT_R4K
992	select CSRC_R4K
993	select IRQ_MIPS_CPU
994	select ZONE_DMA32 if 64BIT
995	select SYNC_R4K
996	select SYS_HAS_EARLY_PRINTK
997	select SYS_SUPPORTS_ZBOOT
998	select SYS_SUPPORTS_ZBOOT_UART16550
999	help
1000	  Support for systems based on Netlogic XLR and XLS processors.
1001	  Say Y here if you have a XLR or XLS based board.
1002
1003config NLM_XLP_BOARD
1004	bool "Netlogic XLP based systems"
1005	select BOOT_ELF32
1006	select NLM_COMMON
1007	select SYS_HAS_CPU_XLP
1008	select SYS_SUPPORTS_SMP
1009	select HAVE_PCI
1010	select SYS_SUPPORTS_32BIT_KERNEL
1011	select SYS_SUPPORTS_64BIT_KERNEL
1012	select PHYS_ADDR_T_64BIT
1013	select GPIOLIB
1014	select SYS_SUPPORTS_BIG_ENDIAN
1015	select SYS_SUPPORTS_LITTLE_ENDIAN
1016	select SYS_SUPPORTS_HIGHMEM
1017	select NR_CPUS_DEFAULT_32
1018	select CEVT_R4K
1019	select CSRC_R4K
1020	select IRQ_MIPS_CPU
1021	select ZONE_DMA32 if 64BIT
1022	select SYNC_R4K
1023	select SYS_HAS_EARLY_PRINTK
1024	select USE_OF
1025	select SYS_SUPPORTS_ZBOOT
1026	select SYS_SUPPORTS_ZBOOT_UART16550
1027	help
1028	  This board is based on Netlogic XLP Processor.
1029	  Say Y here if you have a XLP based board.
1030
1031endchoice
1032
1033source "arch/mips/alchemy/Kconfig"
1034source "arch/mips/ath25/Kconfig"
1035source "arch/mips/ath79/Kconfig"
1036source "arch/mips/bcm47xx/Kconfig"
1037source "arch/mips/bcm63xx/Kconfig"
1038source "arch/mips/bmips/Kconfig"
1039source "arch/mips/generic/Kconfig"
1040source "arch/mips/ingenic/Kconfig"
1041source "arch/mips/jazz/Kconfig"
1042source "arch/mips/lantiq/Kconfig"
1043source "arch/mips/pic32/Kconfig"
1044source "arch/mips/pistachio/Kconfig"
1045source "arch/mips/ralink/Kconfig"
1046source "arch/mips/sgi-ip27/Kconfig"
1047source "arch/mips/sibyte/Kconfig"
1048source "arch/mips/txx9/Kconfig"
1049source "arch/mips/vr41xx/Kconfig"
1050source "arch/mips/cavium-octeon/Kconfig"
1051source "arch/mips/loongson2ef/Kconfig"
1052source "arch/mips/loongson32/Kconfig"
1053source "arch/mips/loongson64/Kconfig"
1054source "arch/mips/netlogic/Kconfig"
1055
1056endmenu
1057
1058config GENERIC_HWEIGHT
1059	bool
1060	default y
1061
1062config GENERIC_CALIBRATE_DELAY
1063	bool
1064	default y
1065
1066config SCHED_OMIT_FRAME_POINTER
1067	bool
1068	default y
1069
1070#
1071# Select some configuration options automatically based on user selections.
1072#
1073config FW_ARC
1074	bool
1075
1076config ARCH_MAY_HAVE_PC_FDC
1077	bool
1078
1079config BOOT_RAW
1080	bool
1081
1082config CEVT_BCM1480
1083	bool
1084
1085config CEVT_DS1287
1086	bool
1087
1088config CEVT_GT641XX
1089	bool
1090
1091config CEVT_R4K
1092	bool
1093
1094config CEVT_SB1250
1095	bool
1096
1097config CEVT_TXX9
1098	bool
1099
1100config CSRC_BCM1480
1101	bool
1102
1103config CSRC_IOASIC
1104	bool
1105
1106config CSRC_R4K
1107	select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1108	bool
1109
1110config CSRC_SB1250
1111	bool
1112
1113config MIPS_CLOCK_VSYSCALL
1114	def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1115
1116config GPIO_TXX9
1117	select GPIOLIB
1118	bool
1119
1120config FW_CFE
1121	bool
1122
1123config ARCH_SUPPORTS_UPROBES
1124	bool
1125
1126config DMA_MAYBE_COHERENT
1127	select ARCH_HAS_DMA_COHERENCE_H
1128	select DMA_NONCOHERENT
1129	bool
1130
1131config DMA_PERDEV_COHERENT
1132	bool
1133	select ARCH_HAS_SETUP_DMA_OPS
1134	select DMA_NONCOHERENT
1135
1136config DMA_NONCOHERENT
1137	bool
1138	#
1139	# MIPS allows mixing "slightly different" Cacheability and Coherency
1140	# Attribute bits.  It is believed that the uncached access through
1141	# KSEG1 and the implementation specific "uncached accelerated" used
1142	# by pgprot_writcombine can be mixed, and the latter sometimes provides
1143	# significant advantages.
1144	#
1145	select ARCH_HAS_DMA_WRITE_COMBINE
1146	select ARCH_HAS_DMA_PREP_COHERENT
1147	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1148	select ARCH_HAS_DMA_SET_UNCACHED
1149	select DMA_NONCOHERENT_MMAP
1150	select NEED_DMA_MAP_STATE
1151
1152config SYS_HAS_EARLY_PRINTK
1153	bool
1154
1155config SYS_SUPPORTS_HOTPLUG_CPU
1156	bool
1157
1158config MIPS_BONITO64
1159	bool
1160
1161config MIPS_MSC
1162	bool
1163
1164config SYNC_R4K
1165	bool
1166
1167config NO_IOPORT_MAP
1168	def_bool n
1169
1170config GENERIC_CSUM
1171	def_bool CPU_NO_LOAD_STORE_LR
1172
1173config GENERIC_ISA_DMA
1174	bool
1175	select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1176	select ISA_DMA_API
1177
1178config GENERIC_ISA_DMA_SUPPORT_BROKEN
1179	bool
1180	select GENERIC_ISA_DMA
1181
1182config HAVE_PLAT_DELAY
1183	bool
1184
1185config HAVE_PLAT_FW_INIT_CMDLINE
1186	bool
1187
1188config HAVE_PLAT_MEMCPY
1189	bool
1190
1191config ISA_DMA_API
1192	bool
1193
1194config HOLES_IN_ZONE
1195	bool
1196
1197config SYS_SUPPORTS_RELOCATABLE
1198	bool
1199	help
1200	  Selected if the platform supports relocating the kernel.
1201	  The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1202	  to allow access to command line and entropy sources.
1203
1204config MIPS_CBPF_JIT
1205	def_bool y
1206	depends on BPF_JIT && HAVE_CBPF_JIT
1207
1208config MIPS_EBPF_JIT
1209	def_bool y
1210	depends on BPF_JIT && HAVE_EBPF_JIT
1211
1212
1213#
1214# Endianness selection.  Sufficiently obscure so many users don't know what to
1215# answer,so we try hard to limit the available choices.  Also the use of a
1216# choice statement should be more obvious to the user.
1217#
1218choice
1219	prompt "Endianness selection"
1220	help
1221	  Some MIPS machines can be configured for either little or big endian
1222	  byte order. These modes require different kernels and a different
1223	  Linux distribution.  In general there is one preferred byteorder for a
1224	  particular system but some systems are just as commonly used in the
1225	  one or the other endianness.
1226
1227config CPU_BIG_ENDIAN
1228	bool "Big endian"
1229	depends on SYS_SUPPORTS_BIG_ENDIAN
1230
1231config CPU_LITTLE_ENDIAN
1232	bool "Little endian"
1233	depends on SYS_SUPPORTS_LITTLE_ENDIAN
1234
1235endchoice
1236
1237config EXPORT_UASM
1238	bool
1239
1240config SYS_SUPPORTS_APM_EMULATION
1241	bool
1242
1243config SYS_SUPPORTS_BIG_ENDIAN
1244	bool
1245
1246config SYS_SUPPORTS_LITTLE_ENDIAN
1247	bool
1248
1249config SYS_SUPPORTS_HUGETLBFS
1250	bool
1251	depends on CPU_SUPPORTS_HUGEPAGES
1252	default y
1253
1254config MIPS_HUGE_TLB_SUPPORT
1255	def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1256
1257config IRQ_CPU_RM7K
1258	bool
1259
1260config IRQ_MSP_SLP
1261	bool
1262
1263config IRQ_MSP_CIC
1264	bool
1265
1266config IRQ_TXX9
1267	bool
1268
1269config IRQ_GT641XX
1270	bool
1271
1272config PCI_GT64XXX_PCI0
1273	bool
1274
1275config PCI_XTALK_BRIDGE
1276	bool
1277
1278config NO_EXCEPT_FILL
1279	bool
1280
1281config MIPS_SPRAM
1282	bool
1283
1284config SWAP_IO_SPACE
1285	bool
1286
1287config SGI_HAS_INDYDOG
1288	bool
1289
1290config SGI_HAS_HAL2
1291	bool
1292
1293config SGI_HAS_SEEQ
1294	bool
1295
1296config SGI_HAS_WD93
1297	bool
1298
1299config SGI_HAS_ZILOG
1300	bool
1301
1302config SGI_HAS_I8042
1303	bool
1304
1305config DEFAULT_SGI_PARTITION
1306	bool
1307
1308config FW_ARC32
1309	bool
1310
1311config FW_SNIPROM
1312	bool
1313
1314config BOOT_ELF32
1315	bool
1316
1317config MIPS_L1_CACHE_SHIFT_4
1318	bool
1319
1320config MIPS_L1_CACHE_SHIFT_5
1321	bool
1322
1323config MIPS_L1_CACHE_SHIFT_6
1324	bool
1325
1326config MIPS_L1_CACHE_SHIFT_7
1327	bool
1328
1329config MIPS_L1_CACHE_SHIFT
1330	int
1331	default "7" if MIPS_L1_CACHE_SHIFT_7
1332	default "6" if MIPS_L1_CACHE_SHIFT_6
1333	default "5" if MIPS_L1_CACHE_SHIFT_5
1334	default "4" if MIPS_L1_CACHE_SHIFT_4
1335	default "5"
1336
1337config ARC_CMDLINE_ONLY
1338	bool
1339
1340config ARC_CONSOLE
1341	bool "ARC console support"
1342	depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1343
1344config ARC_MEMORY
1345	bool
1346
1347config ARC_PROMLIB
1348	bool
1349
1350config FW_ARC64
1351	bool
1352
1353config BOOT_ELF64
1354	bool
1355
1356menu "CPU selection"
1357
1358choice
1359	prompt "CPU type"
1360	default CPU_R4X00
1361
1362config CPU_LOONGSON64
1363	bool "Loongson 64-bit CPU"
1364	depends on SYS_HAS_CPU_LOONGSON64
1365	select ARCH_HAS_PHYS_TO_DMA
1366	select CPU_MIPSR2
1367	select CPU_HAS_PREFETCH
1368	select CPU_SUPPORTS_64BIT_KERNEL
1369	select CPU_SUPPORTS_HIGHMEM
1370	select CPU_SUPPORTS_HUGEPAGES
1371	select CPU_SUPPORTS_MSA
1372	select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1373	select CPU_MIPSR2_IRQ_VI
1374	select WEAK_ORDERING
1375	select WEAK_REORDERING_BEYOND_LLSC
1376	select MIPS_ASID_BITS_VARIABLE
1377	select MIPS_PGD_C0_CONTEXT
1378	select MIPS_L1_CACHE_SHIFT_6
1379	select GPIOLIB
1380	select SWIOTLB
1381	select HAVE_KVM
1382	help
1383		The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1384		cores implements the MIPS64R2 instruction set with many extensions,
1385		including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1386		3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1387		Loongson-2E/2F is not covered here and will be removed in future.
1388
1389config LOONGSON3_ENHANCEMENT
1390	bool "New Loongson-3 CPU Enhancements"
1391	default n
1392	depends on CPU_LOONGSON64
1393	help
1394	  New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1395	  R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1396	  FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1397	  Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1398	  Fast TLB refill support, etc.
1399
1400	  This option enable those enhancements which are not probed at run
1401	  time. If you want a generic kernel to run on all Loongson 3 machines,
1402	  please say 'N' here. If you want a high-performance kernel to run on
1403	  new Loongson-3 machines only, please say 'Y' here.
1404
1405config CPU_LOONGSON3_WORKAROUNDS
1406	bool "Old Loongson-3 LLSC Workarounds"
1407	default y if SMP
1408	depends on CPU_LOONGSON64
1409	help
1410	  Loongson-3 processors have the llsc issues which require workarounds.
1411	  Without workarounds the system may hang unexpectedly.
1412
1413	  Newer Loongson-3 will fix these issues and no workarounds are needed.
1414	  The workarounds have no significant side effect on them but may
1415	  decrease the performance of the system so this option should be
1416	  disabled unless the kernel is intended to be run on old systems.
1417
1418	  If unsure, please say Y.
1419
1420config CPU_LOONGSON3_CPUCFG_EMULATION
1421	bool "Emulate the CPUCFG instruction on older Loongson cores"
1422	default y
1423	depends on CPU_LOONGSON64
1424	help
1425	  Loongson-3A R4 and newer have the CPUCFG instruction available for
1426	  userland to query CPU capabilities, much like CPUID on x86. This
1427	  option provides emulation of the instruction on older Loongson
1428	  cores, back to Loongson-3A1000.
1429
1430	  If unsure, please say Y.
1431
1432config CPU_LOONGSON2E
1433	bool "Loongson 2E"
1434	depends on SYS_HAS_CPU_LOONGSON2E
1435	select CPU_LOONGSON2EF
1436	help
1437	  The Loongson 2E processor implements the MIPS III instruction set
1438	  with many extensions.
1439
1440	  It has an internal FPGA northbridge, which is compatible to
1441	  bonito64.
1442
1443config CPU_LOONGSON2F
1444	bool "Loongson 2F"
1445	depends on SYS_HAS_CPU_LOONGSON2F
1446	select CPU_LOONGSON2EF
1447	select GPIOLIB
1448	help
1449	  The Loongson 2F processor implements the MIPS III instruction set
1450	  with many extensions.
1451
1452	  Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1453	  have a similar programming interface with FPGA northbridge used in
1454	  Loongson2E.
1455
1456config CPU_LOONGSON1B
1457	bool "Loongson 1B"
1458	depends on SYS_HAS_CPU_LOONGSON1B
1459	select CPU_LOONGSON32
1460	select LEDS_GPIO_REGISTER
1461	help
1462	  The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1463	  Release 1 instruction set and part of the MIPS32 Release 2
1464	  instruction set.
1465
1466config CPU_LOONGSON1C
1467	bool "Loongson 1C"
1468	depends on SYS_HAS_CPU_LOONGSON1C
1469	select CPU_LOONGSON32
1470	select LEDS_GPIO_REGISTER
1471	help
1472	  The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1473	  Release 1 instruction set and part of the MIPS32 Release 2
1474	  instruction set.
1475
1476config CPU_MIPS32_R1
1477	bool "MIPS32 Release 1"
1478	depends on SYS_HAS_CPU_MIPS32_R1
1479	select CPU_HAS_PREFETCH
1480	select CPU_SUPPORTS_32BIT_KERNEL
1481	select CPU_SUPPORTS_HIGHMEM
1482	help
1483	  Choose this option to build a kernel for release 1 or later of the
1484	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1485	  MIPS processor are based on a MIPS32 processor.  If you know the
1486	  specific type of processor in your system, choose those that one
1487	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1488	  Release 2 of the MIPS32 architecture is available since several
1489	  years so chances are you even have a MIPS32 Release 2 processor
1490	  in which case you should choose CPU_MIPS32_R2 instead for better
1491	  performance.
1492
1493config CPU_MIPS32_R2
1494	bool "MIPS32 Release 2"
1495	depends on SYS_HAS_CPU_MIPS32_R2
1496	select CPU_HAS_PREFETCH
1497	select CPU_SUPPORTS_32BIT_KERNEL
1498	select CPU_SUPPORTS_HIGHMEM
1499	select CPU_SUPPORTS_MSA
1500	select HAVE_KVM
1501	help
1502	  Choose this option to build a kernel for release 2 or later of the
1503	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1504	  MIPS processor are based on a MIPS32 processor.  If you know the
1505	  specific type of processor in your system, choose those that one
1506	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1507
1508config CPU_MIPS32_R5
1509	bool "MIPS32 Release 5"
1510	depends on SYS_HAS_CPU_MIPS32_R5
1511	select CPU_HAS_PREFETCH
1512	select CPU_SUPPORTS_32BIT_KERNEL
1513	select CPU_SUPPORTS_HIGHMEM
1514	select CPU_SUPPORTS_MSA
1515	select HAVE_KVM
1516	select MIPS_O32_FP64_SUPPORT
1517	help
1518	  Choose this option to build a kernel for release 5 or later of the
1519	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1520	  family, are based on a MIPS32r5 processor. If you own an older
1521	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1522
1523config CPU_MIPS32_R6
1524	bool "MIPS32 Release 6"
1525	depends on SYS_HAS_CPU_MIPS32_R6
1526	select CPU_HAS_PREFETCH
1527	select CPU_NO_LOAD_STORE_LR
1528	select CPU_SUPPORTS_32BIT_KERNEL
1529	select CPU_SUPPORTS_HIGHMEM
1530	select CPU_SUPPORTS_MSA
1531	select HAVE_KVM
1532	select MIPS_O32_FP64_SUPPORT
1533	help
1534	  Choose this option to build a kernel for release 6 or later of the
1535	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1536	  family, are based on a MIPS32r6 processor. If you own an older
1537	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1538
1539config CPU_MIPS64_R1
1540	bool "MIPS64 Release 1"
1541	depends on SYS_HAS_CPU_MIPS64_R1
1542	select CPU_HAS_PREFETCH
1543	select CPU_SUPPORTS_32BIT_KERNEL
1544	select CPU_SUPPORTS_64BIT_KERNEL
1545	select CPU_SUPPORTS_HIGHMEM
1546	select CPU_SUPPORTS_HUGEPAGES
1547	help
1548	  Choose this option to build a kernel for release 1 or later of the
1549	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1550	  MIPS processor are based on a MIPS64 processor.  If you know the
1551	  specific type of processor in your system, choose those that one
1552	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1553	  Release 2 of the MIPS64 architecture is available since several
1554	  years so chances are you even have a MIPS64 Release 2 processor
1555	  in which case you should choose CPU_MIPS64_R2 instead for better
1556	  performance.
1557
1558config CPU_MIPS64_R2
1559	bool "MIPS64 Release 2"
1560	depends on SYS_HAS_CPU_MIPS64_R2
1561	select CPU_HAS_PREFETCH
1562	select CPU_SUPPORTS_32BIT_KERNEL
1563	select CPU_SUPPORTS_64BIT_KERNEL
1564	select CPU_SUPPORTS_HIGHMEM
1565	select CPU_SUPPORTS_HUGEPAGES
1566	select CPU_SUPPORTS_MSA
1567	select HAVE_KVM
1568	help
1569	  Choose this option to build a kernel for release 2 or later of the
1570	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1571	  MIPS processor are based on a MIPS64 processor.  If you know the
1572	  specific type of processor in your system, choose those that one
1573	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1574
1575config CPU_MIPS64_R5
1576	bool "MIPS64 Release 5"
1577	depends on SYS_HAS_CPU_MIPS64_R5
1578	select CPU_HAS_PREFETCH
1579	select CPU_SUPPORTS_32BIT_KERNEL
1580	select CPU_SUPPORTS_64BIT_KERNEL
1581	select CPU_SUPPORTS_HIGHMEM
1582	select CPU_SUPPORTS_HUGEPAGES
1583	select CPU_SUPPORTS_MSA
1584	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1585	select HAVE_KVM
1586	help
1587	  Choose this option to build a kernel for release 5 or later of the
1588	  MIPS64 architecture.  This is a intermediate MIPS architecture
1589	  release partly implementing release 6 features. Though there is no
1590	  any hardware known to be based on this release.
1591
1592config CPU_MIPS64_R6
1593	bool "MIPS64 Release 6"
1594	depends on SYS_HAS_CPU_MIPS64_R6
1595	select CPU_HAS_PREFETCH
1596	select CPU_NO_LOAD_STORE_LR
1597	select CPU_SUPPORTS_32BIT_KERNEL
1598	select CPU_SUPPORTS_64BIT_KERNEL
1599	select CPU_SUPPORTS_HIGHMEM
1600	select CPU_SUPPORTS_HUGEPAGES
1601	select CPU_SUPPORTS_MSA
1602	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1603	select HAVE_KVM
1604	help
1605	  Choose this option to build a kernel for release 6 or later of the
1606	  MIPS64 architecture.  New MIPS processors, starting with the Warrior
1607	  family, are based on a MIPS64r6 processor. If you own an older
1608	  processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1609
1610config CPU_P5600
1611	bool "MIPS Warrior P5600"
1612	depends on SYS_HAS_CPU_P5600
1613	select CPU_HAS_PREFETCH
1614	select CPU_SUPPORTS_32BIT_KERNEL
1615	select CPU_SUPPORTS_HIGHMEM
1616	select CPU_SUPPORTS_MSA
1617	select CPU_SUPPORTS_CPUFREQ
1618	select CPU_MIPSR2_IRQ_VI
1619	select CPU_MIPSR2_IRQ_EI
1620	select HAVE_KVM
1621	select MIPS_O32_FP64_SUPPORT
1622	help
1623	  Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1624	  It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1625	  MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1626	  level features like up to six P5600 calculation cores, CM2 with L2
1627	  cache, IOCU/IOMMU (though might be unused depending on the system-
1628	  specific IP core configuration), GIC, CPC, virtualisation module,
1629	  eJTAG and PDtrace.
1630
1631config CPU_R3000
1632	bool "R3000"
1633	depends on SYS_HAS_CPU_R3000
1634	select CPU_HAS_WB
1635	select CPU_R3K_TLB
1636	select CPU_SUPPORTS_32BIT_KERNEL
1637	select CPU_SUPPORTS_HIGHMEM
1638	help
1639	  Please make sure to pick the right CPU type. Linux/MIPS is not
1640	  designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1641	  *not* work on R4000 machines and vice versa.  However, since most
1642	  of the supported machines have an R4000 (or similar) CPU, R4x00
1643	  might be a safe bet.  If the resulting kernel does not work,
1644	  try to recompile with R3000.
1645
1646config CPU_TX39XX
1647	bool "R39XX"
1648	depends on SYS_HAS_CPU_TX39XX
1649	select CPU_SUPPORTS_32BIT_KERNEL
1650	select CPU_R3K_TLB
1651
1652config CPU_VR41XX
1653	bool "R41xx"
1654	depends on SYS_HAS_CPU_VR41XX
1655	select CPU_SUPPORTS_32BIT_KERNEL
1656	select CPU_SUPPORTS_64BIT_KERNEL
1657	help
1658	  The options selects support for the NEC VR4100 series of processors.
1659	  Only choose this option if you have one of these processors as a
1660	  kernel built with this option will not run on any other type of
1661	  processor or vice versa.
1662
1663config CPU_R4X00
1664	bool "R4x00"
1665	depends on SYS_HAS_CPU_R4X00
1666	select CPU_SUPPORTS_32BIT_KERNEL
1667	select CPU_SUPPORTS_64BIT_KERNEL
1668	select CPU_SUPPORTS_HUGEPAGES
1669	help
1670	  MIPS Technologies R4000-series processors other than 4300, including
1671	  the R4000, R4400, R4600, and 4700.
1672
1673config CPU_TX49XX
1674	bool "R49XX"
1675	depends on SYS_HAS_CPU_TX49XX
1676	select CPU_HAS_PREFETCH
1677	select CPU_SUPPORTS_32BIT_KERNEL
1678	select CPU_SUPPORTS_64BIT_KERNEL
1679	select CPU_SUPPORTS_HUGEPAGES
1680
1681config CPU_R5000
1682	bool "R5000"
1683	depends on SYS_HAS_CPU_R5000
1684	select CPU_SUPPORTS_32BIT_KERNEL
1685	select CPU_SUPPORTS_64BIT_KERNEL
1686	select CPU_SUPPORTS_HUGEPAGES
1687	help
1688	  MIPS Technologies R5000-series processors other than the Nevada.
1689
1690config CPU_R5500
1691	bool "R5500"
1692	depends on SYS_HAS_CPU_R5500
1693	select CPU_SUPPORTS_32BIT_KERNEL
1694	select CPU_SUPPORTS_64BIT_KERNEL
1695	select CPU_SUPPORTS_HUGEPAGES
1696	help
1697	  NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1698	  instruction set.
1699
1700config CPU_NEVADA
1701	bool "RM52xx"
1702	depends on SYS_HAS_CPU_NEVADA
1703	select CPU_SUPPORTS_32BIT_KERNEL
1704	select CPU_SUPPORTS_64BIT_KERNEL
1705	select CPU_SUPPORTS_HUGEPAGES
1706	help
1707	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1708
1709config CPU_R10000
1710	bool "R10000"
1711	depends on SYS_HAS_CPU_R10000
1712	select CPU_HAS_PREFETCH
1713	select CPU_SUPPORTS_32BIT_KERNEL
1714	select CPU_SUPPORTS_64BIT_KERNEL
1715	select CPU_SUPPORTS_HIGHMEM
1716	select CPU_SUPPORTS_HUGEPAGES
1717	help
1718	  MIPS Technologies R10000-series processors.
1719
1720config CPU_RM7000
1721	bool "RM7000"
1722	depends on SYS_HAS_CPU_RM7000
1723	select CPU_HAS_PREFETCH
1724	select CPU_SUPPORTS_32BIT_KERNEL
1725	select CPU_SUPPORTS_64BIT_KERNEL
1726	select CPU_SUPPORTS_HIGHMEM
1727	select CPU_SUPPORTS_HUGEPAGES
1728
1729config CPU_SB1
1730	bool "SB1"
1731	depends on SYS_HAS_CPU_SB1
1732	select CPU_SUPPORTS_32BIT_KERNEL
1733	select CPU_SUPPORTS_64BIT_KERNEL
1734	select CPU_SUPPORTS_HIGHMEM
1735	select CPU_SUPPORTS_HUGEPAGES
1736	select WEAK_ORDERING
1737
1738config CPU_CAVIUM_OCTEON
1739	bool "Cavium Octeon processor"
1740	depends on SYS_HAS_CPU_CAVIUM_OCTEON
1741	select CPU_HAS_PREFETCH
1742	select CPU_SUPPORTS_64BIT_KERNEL
1743	select WEAK_ORDERING
1744	select CPU_SUPPORTS_HIGHMEM
1745	select CPU_SUPPORTS_HUGEPAGES
1746	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1747	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1748	select MIPS_L1_CACHE_SHIFT_7
1749	select HAVE_KVM
1750	help
1751	  The Cavium Octeon processor is a highly integrated chip containing
1752	  many ethernet hardware widgets for networking tasks. The processor
1753	  can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1754	  Full details can be found at http://www.caviumnetworks.com.
1755
1756config CPU_BMIPS
1757	bool "Broadcom BMIPS"
1758	depends on SYS_HAS_CPU_BMIPS
1759	select CPU_MIPS32
1760	select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1761	select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1762	select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1763	select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1764	select CPU_SUPPORTS_32BIT_KERNEL
1765	select DMA_NONCOHERENT
1766	select IRQ_MIPS_CPU
1767	select SWAP_IO_SPACE
1768	select WEAK_ORDERING
1769	select CPU_SUPPORTS_HIGHMEM
1770	select CPU_HAS_PREFETCH
1771	select CPU_SUPPORTS_CPUFREQ
1772	select MIPS_EXTERNAL_TIMER
1773	help
1774	  Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1775
1776config CPU_XLR
1777	bool "Netlogic XLR SoC"
1778	depends on SYS_HAS_CPU_XLR
1779	select CPU_SUPPORTS_32BIT_KERNEL
1780	select CPU_SUPPORTS_64BIT_KERNEL
1781	select CPU_SUPPORTS_HIGHMEM
1782	select CPU_SUPPORTS_HUGEPAGES
1783	select WEAK_ORDERING
1784	select WEAK_REORDERING_BEYOND_LLSC
1785	help
1786	  Netlogic Microsystems XLR/XLS processors.
1787
1788config CPU_XLP
1789	bool "Netlogic XLP SoC"
1790	depends on SYS_HAS_CPU_XLP
1791	select CPU_SUPPORTS_32BIT_KERNEL
1792	select CPU_SUPPORTS_64BIT_KERNEL
1793	select CPU_SUPPORTS_HIGHMEM
1794	select WEAK_ORDERING
1795	select WEAK_REORDERING_BEYOND_LLSC
1796	select CPU_HAS_PREFETCH
1797	select CPU_MIPSR2
1798	select CPU_SUPPORTS_HUGEPAGES
1799	select MIPS_ASID_BITS_VARIABLE
1800	help
1801	  Netlogic Microsystems XLP processors.
1802endchoice
1803
1804config CPU_MIPS32_3_5_FEATURES
1805	bool "MIPS32 Release 3.5 Features"
1806	depends on SYS_HAS_CPU_MIPS32_R3_5
1807	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1808		   CPU_P5600
1809	help
1810	  Choose this option to build a kernel for release 2 or later of the
1811	  MIPS32 architecture including features from the 3.5 release such as
1812	  support for Enhanced Virtual Addressing (EVA).
1813
1814config CPU_MIPS32_3_5_EVA
1815	bool "Enhanced Virtual Addressing (EVA)"
1816	depends on CPU_MIPS32_3_5_FEATURES
1817	select EVA
1818	default y
1819	help
1820	  Choose this option if you want to enable the Enhanced Virtual
1821	  Addressing (EVA) on your MIPS32 core (such as proAptiv).
1822	  One of its primary benefits is an increase in the maximum size
1823	  of lowmem (up to 3GB). If unsure, say 'N' here.
1824
1825config CPU_MIPS32_R5_FEATURES
1826	bool "MIPS32 Release 5 Features"
1827	depends on SYS_HAS_CPU_MIPS32_R5
1828	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1829	help
1830	  Choose this option to build a kernel for release 2 or later of the
1831	  MIPS32 architecture including features from release 5 such as
1832	  support for Extended Physical Addressing (XPA).
1833
1834config CPU_MIPS32_R5_XPA
1835	bool "Extended Physical Addressing (XPA)"
1836	depends on CPU_MIPS32_R5_FEATURES
1837	depends on !EVA
1838	depends on !PAGE_SIZE_4KB
1839	depends on SYS_SUPPORTS_HIGHMEM
1840	select XPA
1841	select HIGHMEM
1842	select PHYS_ADDR_T_64BIT
1843	default n
1844	help
1845	  Choose this option if you want to enable the Extended Physical
1846	  Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1847	  benefit is to increase physical addressing equal to or greater
1848	  than 40 bits. Note that this has the side effect of turning on
1849	  64-bit addressing which in turn makes the PTEs 64-bit in size.
1850	  If unsure, say 'N' here.
1851
1852if CPU_LOONGSON2F
1853config CPU_NOP_WORKAROUNDS
1854	bool
1855
1856config CPU_JUMP_WORKAROUNDS
1857	bool
1858
1859config CPU_LOONGSON2F_WORKAROUNDS
1860	bool "Loongson 2F Workarounds"
1861	default y
1862	select CPU_NOP_WORKAROUNDS
1863	select CPU_JUMP_WORKAROUNDS
1864	help
1865	  Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1866	  require workarounds.  Without workarounds the system may hang
1867	  unexpectedly.  For more information please refer to the gas
1868	  -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1869
1870	  Loongson 2F03 and later have fixed these issues and no workarounds
1871	  are needed.  The workarounds have no significant side effect on them
1872	  but may decrease the performance of the system so this option should
1873	  be disabled unless the kernel is intended to be run on 2F01 or 2F02
1874	  systems.
1875
1876	  If unsure, please say Y.
1877endif # CPU_LOONGSON2F
1878
1879config SYS_SUPPORTS_ZBOOT
1880	bool
1881	select HAVE_KERNEL_GZIP
1882	select HAVE_KERNEL_BZIP2
1883	select HAVE_KERNEL_LZ4
1884	select HAVE_KERNEL_LZMA
1885	select HAVE_KERNEL_LZO
1886	select HAVE_KERNEL_XZ
1887	select HAVE_KERNEL_ZSTD
1888
1889config SYS_SUPPORTS_ZBOOT_UART16550
1890	bool
1891	select SYS_SUPPORTS_ZBOOT
1892
1893config SYS_SUPPORTS_ZBOOT_UART_PROM
1894	bool
1895	select SYS_SUPPORTS_ZBOOT
1896
1897config CPU_LOONGSON2EF
1898	bool
1899	select CPU_SUPPORTS_32BIT_KERNEL
1900	select CPU_SUPPORTS_64BIT_KERNEL
1901	select CPU_SUPPORTS_HIGHMEM
1902	select CPU_SUPPORTS_HUGEPAGES
1903	select ARCH_HAS_PHYS_TO_DMA
1904
1905config CPU_LOONGSON32
1906	bool
1907	select CPU_MIPS32
1908	select CPU_MIPSR2
1909	select CPU_HAS_PREFETCH
1910	select CPU_SUPPORTS_32BIT_KERNEL
1911	select CPU_SUPPORTS_HIGHMEM
1912	select CPU_SUPPORTS_CPUFREQ
1913
1914config CPU_BMIPS32_3300
1915	select SMP_UP if SMP
1916	bool
1917
1918config CPU_BMIPS4350
1919	bool
1920	select SYS_SUPPORTS_SMP
1921	select SYS_SUPPORTS_HOTPLUG_CPU
1922
1923config CPU_BMIPS4380
1924	bool
1925	select MIPS_L1_CACHE_SHIFT_6
1926	select SYS_SUPPORTS_SMP
1927	select SYS_SUPPORTS_HOTPLUG_CPU
1928	select CPU_HAS_RIXI
1929
1930config CPU_BMIPS5000
1931	bool
1932	select MIPS_CPU_SCACHE
1933	select MIPS_L1_CACHE_SHIFT_7
1934	select SYS_SUPPORTS_SMP
1935	select SYS_SUPPORTS_HOTPLUG_CPU
1936	select CPU_HAS_RIXI
1937
1938config SYS_HAS_CPU_LOONGSON64
1939	bool
1940	select CPU_SUPPORTS_CPUFREQ
1941	select CPU_HAS_RIXI
1942
1943config SYS_HAS_CPU_LOONGSON2E
1944	bool
1945
1946config SYS_HAS_CPU_LOONGSON2F
1947	bool
1948	select CPU_SUPPORTS_CPUFREQ
1949	select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1950
1951config SYS_HAS_CPU_LOONGSON1B
1952	bool
1953
1954config SYS_HAS_CPU_LOONGSON1C
1955	bool
1956
1957config SYS_HAS_CPU_MIPS32_R1
1958	bool
1959
1960config SYS_HAS_CPU_MIPS32_R2
1961	bool
1962
1963config SYS_HAS_CPU_MIPS32_R3_5
1964	bool
1965
1966config SYS_HAS_CPU_MIPS32_R5
1967	bool
1968	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1969
1970config SYS_HAS_CPU_MIPS32_R6
1971	bool
1972	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1973
1974config SYS_HAS_CPU_MIPS64_R1
1975	bool
1976
1977config SYS_HAS_CPU_MIPS64_R2
1978	bool
1979
1980config SYS_HAS_CPU_MIPS64_R6
1981	bool
1982	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1983
1984config SYS_HAS_CPU_P5600
1985	bool
1986	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1987
1988config SYS_HAS_CPU_R3000
1989	bool
1990
1991config SYS_HAS_CPU_TX39XX
1992	bool
1993
1994config SYS_HAS_CPU_VR41XX
1995	bool
1996
1997config SYS_HAS_CPU_R4X00
1998	bool
1999
2000config SYS_HAS_CPU_TX49XX
2001	bool
2002
2003config SYS_HAS_CPU_R5000
2004	bool
2005
2006config SYS_HAS_CPU_R5500
2007	bool
2008
2009config SYS_HAS_CPU_NEVADA
2010	bool
2011
2012config SYS_HAS_CPU_R10000
2013	bool
2014	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2015
2016config SYS_HAS_CPU_RM7000
2017	bool
2018
2019config SYS_HAS_CPU_SB1
2020	bool
2021
2022config SYS_HAS_CPU_CAVIUM_OCTEON
2023	bool
2024
2025config SYS_HAS_CPU_BMIPS
2026	bool
2027
2028config SYS_HAS_CPU_BMIPS32_3300
2029	bool
2030	select SYS_HAS_CPU_BMIPS
2031
2032config SYS_HAS_CPU_BMIPS4350
2033	bool
2034	select SYS_HAS_CPU_BMIPS
2035
2036config SYS_HAS_CPU_BMIPS4380
2037	bool
2038	select SYS_HAS_CPU_BMIPS
2039
2040config SYS_HAS_CPU_BMIPS5000
2041	bool
2042	select SYS_HAS_CPU_BMIPS
2043	select ARCH_HAS_SYNC_DMA_FOR_CPU
2044
2045config SYS_HAS_CPU_XLR
2046	bool
2047
2048config SYS_HAS_CPU_XLP
2049	bool
2050
2051#
2052# CPU may reorder R->R, R->W, W->R, W->W
2053# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2054#
2055config WEAK_ORDERING
2056	bool
2057
2058#
2059# CPU may reorder reads and writes beyond LL/SC
2060# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2061#
2062config WEAK_REORDERING_BEYOND_LLSC
2063	bool
2064endmenu
2065
2066#
2067# These two indicate any level of the MIPS32 and MIPS64 architecture
2068#
2069config CPU_MIPS32
2070	bool
2071	default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2072		     CPU_MIPS32_R6 || CPU_P5600
2073
2074config CPU_MIPS64
2075	bool
2076	default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2077		     CPU_MIPS64_R6
2078
2079#
2080# These indicate the revision of the architecture
2081#
2082config CPU_MIPSR1
2083	bool
2084	default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2085
2086config CPU_MIPSR2
2087	bool
2088	default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2089	select CPU_HAS_RIXI
2090	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2091	select MIPS_SPRAM
2092
2093config CPU_MIPSR5
2094	bool
2095	default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2096	select CPU_HAS_RIXI
2097	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2098	select MIPS_SPRAM
2099
2100config CPU_MIPSR6
2101	bool
2102	default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2103	select CPU_HAS_RIXI
2104	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2105	select HAVE_ARCH_BITREVERSE
2106	select MIPS_ASID_BITS_VARIABLE
2107	select MIPS_CRC_SUPPORT
2108	select MIPS_SPRAM
2109
2110config TARGET_ISA_REV
2111	int
2112	default 1 if CPU_MIPSR1
2113	default 2 if CPU_MIPSR2
2114	default 5 if CPU_MIPSR5
2115	default 6 if CPU_MIPSR6
2116	default 0
2117	help
2118	  Reflects the ISA revision being targeted by the kernel build. This
2119	  is effectively the Kconfig equivalent of MIPS_ISA_REV.
2120
2121config EVA
2122	bool
2123
2124config XPA
2125	bool
2126
2127config SYS_SUPPORTS_32BIT_KERNEL
2128	bool
2129config SYS_SUPPORTS_64BIT_KERNEL
2130	bool
2131config CPU_SUPPORTS_32BIT_KERNEL
2132	bool
2133config CPU_SUPPORTS_64BIT_KERNEL
2134	bool
2135config CPU_SUPPORTS_CPUFREQ
2136	bool
2137config CPU_SUPPORTS_ADDRWINCFG
2138	bool
2139config CPU_SUPPORTS_HUGEPAGES
2140	bool
2141	depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2142config MIPS_PGD_C0_CONTEXT
2143	bool
2144	default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2145
2146#
2147# Set to y for ptrace access to watch registers.
2148#
2149config HARDWARE_WATCHPOINTS
2150	bool
2151	default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2152
2153menu "Kernel type"
2154
2155choice
2156	prompt "Kernel code model"
2157	help
2158	  You should only select this option if you have a workload that
2159	  actually benefits from 64-bit processing or if your machine has
2160	  large memory.  You will only be presented a single option in this
2161	  menu if your system does not support both 32-bit and 64-bit kernels.
2162
2163config 32BIT
2164	bool "32-bit kernel"
2165	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2166	select TRAD_SIGNALS
2167	help
2168	  Select this option if you want to build a 32-bit kernel.
2169
2170config 64BIT
2171	bool "64-bit kernel"
2172	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2173	help
2174	  Select this option if you want to build a 64-bit kernel.
2175
2176endchoice
2177
2178config KVM_GUEST
2179	bool "KVM Guest Kernel"
2180	depends on CPU_MIPS32_R2
2181	depends on BROKEN_ON_SMP
2182	help
2183	  Select this option if building a guest kernel for KVM (Trap & Emulate)
2184	  mode.
2185
2186config KVM_GUEST_TIMER_FREQ
2187	int "Count/Compare Timer Frequency (MHz)"
2188	depends on KVM_GUEST
2189	default 100
2190	help
2191	  Set this to non-zero if building a guest kernel for KVM to skip RTC
2192	  emulation when determining guest CPU Frequency. Instead, the guest's
2193	  timer frequency is specified directly.
2194
2195config MIPS_VA_BITS_48
2196	bool "48 bits virtual memory"
2197	depends on 64BIT
2198	help
2199	  Support a maximum at least 48 bits of application virtual
2200	  memory.  Default is 40 bits or less, depending on the CPU.
2201	  For page sizes 16k and above, this option results in a small
2202	  memory overhead for page tables.  For 4k page size, a fourth
2203	  level of page tables is added which imposes both a memory
2204	  overhead as well as slower TLB fault handling.
2205
2206	  If unsure, say N.
2207
2208choice
2209	prompt "Kernel page size"
2210	default PAGE_SIZE_4KB
2211
2212config PAGE_SIZE_4KB
2213	bool "4kB"
2214	depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2215	help
2216	  This option select the standard 4kB Linux page size.  On some
2217	  R3000-family processors this is the only available page size.  Using
2218	  4kB page size will minimize memory consumption and is therefore
2219	  recommended for low memory systems.
2220
2221config PAGE_SIZE_8KB
2222	bool "8kB"
2223	depends on CPU_CAVIUM_OCTEON
2224	depends on !MIPS_VA_BITS_48
2225	help
2226	  Using 8kB page size will result in higher performance kernel at
2227	  the price of higher memory consumption.  This option is available
2228	  only on cnMIPS processors.  Note that you will need a suitable Linux
2229	  distribution to support this.
2230
2231config PAGE_SIZE_16KB
2232	bool "16kB"
2233	depends on !CPU_R3000 && !CPU_TX39XX
2234	help
2235	  Using 16kB page size will result in higher performance kernel at
2236	  the price of higher memory consumption.  This option is available on
2237	  all non-R3000 family processors.  Note that you will need a suitable
2238	  Linux distribution to support this.
2239
2240config PAGE_SIZE_32KB
2241	bool "32kB"
2242	depends on CPU_CAVIUM_OCTEON
2243	depends on !MIPS_VA_BITS_48
2244	help
2245	  Using 32kB page size will result in higher performance kernel at
2246	  the price of higher memory consumption.  This option is available
2247	  only on cnMIPS cores.  Note that you will need a suitable Linux
2248	  distribution to support this.
2249
2250config PAGE_SIZE_64KB
2251	bool "64kB"
2252	depends on !CPU_R3000 && !CPU_TX39XX
2253	help
2254	  Using 64kB page size will result in higher performance kernel at
2255	  the price of higher memory consumption.  This option is available on
2256	  all non-R3000 family processor.  Not that at the time of this
2257	  writing this option is still high experimental.
2258
2259endchoice
2260
2261config FORCE_MAX_ZONEORDER
2262	int "Maximum zone order"
2263	range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2264	default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2265	range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2266	default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2267	range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2268	default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2269	range 0 64
2270	default "11"
2271	help
2272	  The kernel memory allocator divides physically contiguous memory
2273	  blocks into "zones", where each zone is a power of two number of
2274	  pages.  This option selects the largest power of two that the kernel
2275	  keeps in the memory allocator.  If you need to allocate very large
2276	  blocks of physically contiguous memory, then you may need to
2277	  increase this value.
2278
2279	  This config option is actually maximum order plus one. For example,
2280	  a value of 11 means that the largest free memory block is 2^10 pages.
2281
2282	  The page size is not necessarily 4KB.  Keep this in mind
2283	  when choosing a value for this option.
2284
2285config BOARD_SCACHE
2286	bool
2287
2288config IP22_CPU_SCACHE
2289	bool
2290	select BOARD_SCACHE
2291
2292#
2293# Support for a MIPS32 / MIPS64 style S-caches
2294#
2295config MIPS_CPU_SCACHE
2296	bool
2297	select BOARD_SCACHE
2298
2299config R5000_CPU_SCACHE
2300	bool
2301	select BOARD_SCACHE
2302
2303config RM7000_CPU_SCACHE
2304	bool
2305	select BOARD_SCACHE
2306
2307config SIBYTE_DMA_PAGEOPS
2308	bool "Use DMA to clear/copy pages"
2309	depends on CPU_SB1
2310	help
2311	  Instead of using the CPU to zero and copy pages, use a Data Mover
2312	  channel.  These DMA channels are otherwise unused by the standard
2313	  SiByte Linux port.  Seems to give a small performance benefit.
2314
2315config CPU_HAS_PREFETCH
2316	bool
2317
2318config CPU_GENERIC_DUMP_TLB
2319	bool
2320	default y if !(CPU_R3000 || CPU_TX39XX)
2321
2322config MIPS_FP_SUPPORT
2323	bool "Floating Point support" if EXPERT
2324	default y
2325	help
2326	  Select y to include support for floating point in the kernel
2327	  including initialization of FPU hardware, FP context save & restore
2328	  and emulation of an FPU where necessary. Without this support any
2329	  userland program attempting to use floating point instructions will
2330	  receive a SIGILL.
2331
2332	  If you know that your userland will not attempt to use floating point
2333	  instructions then you can say n here to shrink the kernel a little.
2334
2335	  If unsure, say y.
2336
2337config CPU_R2300_FPU
2338	bool
2339	depends on MIPS_FP_SUPPORT
2340	default y if CPU_R3000 || CPU_TX39XX
2341
2342config CPU_R3K_TLB
2343	bool
2344
2345config CPU_R4K_FPU
2346	bool
2347	depends on MIPS_FP_SUPPORT
2348	default y if !CPU_R2300_FPU
2349
2350config CPU_R4K_CACHE_TLB
2351	bool
2352	default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2353
2354config MIPS_MT_SMP
2355	bool "MIPS MT SMP support (1 TC on each available VPE)"
2356	default y
2357	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2358	select CPU_MIPSR2_IRQ_VI
2359	select CPU_MIPSR2_IRQ_EI
2360	select SYNC_R4K
2361	select MIPS_MT
2362	select SMP
2363	select SMP_UP
2364	select SYS_SUPPORTS_SMP
2365	select SYS_SUPPORTS_SCHED_SMT
2366	select MIPS_PERF_SHARED_TC_COUNTERS
2367	help
2368	  This is a kernel model which is known as SMVP. This is supported
2369	  on cores with the MT ASE and uses the available VPEs to implement
2370	  virtual processors which supports SMP. This is equivalent to the
2371	  Intel Hyperthreading feature. For further information go to
2372	  <http://www.imgtec.com/mips/mips-multithreading.asp>.
2373
2374config MIPS_MT
2375	bool
2376
2377config SCHED_SMT
2378	bool "SMT (multithreading) scheduler support"
2379	depends on SYS_SUPPORTS_SCHED_SMT
2380	default n
2381	help
2382	  SMT scheduler support improves the CPU scheduler's decision making
2383	  when dealing with MIPS MT enabled cores at a cost of slightly
2384	  increased overhead in some places. If unsure say N here.
2385
2386config SYS_SUPPORTS_SCHED_SMT
2387	bool
2388
2389config SYS_SUPPORTS_MULTITHREADING
2390	bool
2391
2392config MIPS_MT_FPAFF
2393	bool "Dynamic FPU affinity for FP-intensive threads"
2394	default y
2395	depends on MIPS_MT_SMP
2396
2397config MIPSR2_TO_R6_EMULATOR
2398	bool "MIPS R2-to-R6 emulator"
2399	depends on CPU_MIPSR6
2400	depends on MIPS_FP_SUPPORT
2401	default y
2402	help
2403	  Choose this option if you want to run non-R6 MIPS userland code.
2404	  Even if you say 'Y' here, the emulator will still be disabled by
2405	  default. You can enable it using the 'mipsr2emu' kernel option.
2406	  The only reason this is a build-time option is to save ~14K from the
2407	  final kernel image.
2408
2409config SYS_SUPPORTS_VPE_LOADER
2410	bool
2411	depends on SYS_SUPPORTS_MULTITHREADING
2412	help
2413	  Indicates that the platform supports the VPE loader, and provides
2414	  physical_memsize.
2415
2416config MIPS_VPE_LOADER
2417	bool "VPE loader support."
2418	depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2419	select CPU_MIPSR2_IRQ_VI
2420	select CPU_MIPSR2_IRQ_EI
2421	select MIPS_MT
2422	help
2423	  Includes a loader for loading an elf relocatable object
2424	  onto another VPE and running it.
2425
2426config MIPS_VPE_LOADER_CMP
2427	bool
2428	default "y"
2429	depends on MIPS_VPE_LOADER && MIPS_CMP
2430
2431config MIPS_VPE_LOADER_MT
2432	bool
2433	default "y"
2434	depends on MIPS_VPE_LOADER && !MIPS_CMP
2435
2436config MIPS_VPE_LOADER_TOM
2437	bool "Load VPE program into memory hidden from linux"
2438	depends on MIPS_VPE_LOADER
2439	default y
2440	help
2441	  The loader can use memory that is present but has been hidden from
2442	  Linux using the kernel command line option "mem=xxMB". It's up to
2443	  you to ensure the amount you put in the option and the space your
2444	  program requires is less or equal to the amount physically present.
2445
2446config MIPS_VPE_APSP_API
2447	bool "Enable support for AP/SP API (RTLX)"
2448	depends on MIPS_VPE_LOADER
2449
2450config MIPS_VPE_APSP_API_CMP
2451	bool
2452	default "y"
2453	depends on MIPS_VPE_APSP_API && MIPS_CMP
2454
2455config MIPS_VPE_APSP_API_MT
2456	bool
2457	default "y"
2458	depends on MIPS_VPE_APSP_API && !MIPS_CMP
2459
2460config MIPS_CMP
2461	bool "MIPS CMP framework support (DEPRECATED)"
2462	depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2463	select SMP
2464	select SYNC_R4K
2465	select SYS_SUPPORTS_SMP
2466	select WEAK_ORDERING
2467	default n
2468	help
2469	  Select this if you are using a bootloader which implements the "CMP
2470	  framework" protocol (ie. YAMON) and want your kernel to make use of
2471	  its ability to start secondary CPUs.
2472
2473	  Unless you have a specific need, you should use CONFIG_MIPS_CPS
2474	  instead of this.
2475
2476config MIPS_CPS
2477	bool "MIPS Coherent Processing System support"
2478	depends on SYS_SUPPORTS_MIPS_CPS
2479	select MIPS_CM
2480	select MIPS_CPS_PM if HOTPLUG_CPU
2481	select SMP
2482	select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2483	select SYS_SUPPORTS_HOTPLUG_CPU
2484	select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2485	select SYS_SUPPORTS_SMP
2486	select WEAK_ORDERING
2487	help
2488	  Select this if you wish to run an SMP kernel across multiple cores
2489	  within a MIPS Coherent Processing System. When this option is
2490	  enabled the kernel will probe for other cores and boot them with
2491	  no external assistance. It is safe to enable this when hardware
2492	  support is unavailable.
2493
2494config MIPS_CPS_PM
2495	depends on MIPS_CPS
2496	bool
2497
2498config MIPS_CM
2499	bool
2500	select MIPS_CPC
2501
2502config MIPS_CPC
2503	bool
2504
2505config SB1_PASS_2_WORKAROUNDS
2506	bool
2507	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2508	default y
2509
2510config SB1_PASS_2_1_WORKAROUNDS
2511	bool
2512	depends on CPU_SB1 && CPU_SB1_PASS_2
2513	default y
2514
2515choice
2516	prompt "SmartMIPS or microMIPS ASE support"
2517
2518config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2519	bool "None"
2520	help
2521	  Select this if you want neither microMIPS nor SmartMIPS support
2522
2523config CPU_HAS_SMARTMIPS
2524	depends on SYS_SUPPORTS_SMARTMIPS
2525	bool "SmartMIPS"
2526	help
2527	  SmartMIPS is a extension of the MIPS32 architecture aimed at
2528	  increased security at both hardware and software level for
2529	  smartcards.  Enabling this option will allow proper use of the
2530	  SmartMIPS instructions by Linux applications.  However a kernel with
2531	  this option will not work on a MIPS core without SmartMIPS core.  If
2532	  you don't know you probably don't have SmartMIPS and should say N
2533	  here.
2534
2535config CPU_MICROMIPS
2536	depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2537	bool "microMIPS"
2538	help
2539	  When this option is enabled the kernel will be built using the
2540	  microMIPS ISA
2541
2542endchoice
2543
2544config CPU_HAS_MSA
2545	bool "Support for the MIPS SIMD Architecture"
2546	depends on CPU_SUPPORTS_MSA
2547	depends on MIPS_FP_SUPPORT
2548	depends on 64BIT || MIPS_O32_FP64_SUPPORT
2549	help
2550	  MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2551	  and a set of SIMD instructions to operate on them. When this option
2552	  is enabled the kernel will support allocating & switching MSA
2553	  vector register contexts. If you know that your kernel will only be
2554	  running on CPUs which do not support MSA or that your userland will
2555	  not be making use of it then you may wish to say N here to reduce
2556	  the size & complexity of your kernel.
2557
2558	  If unsure, say Y.
2559
2560config CPU_HAS_WB
2561	bool
2562
2563config XKS01
2564	bool
2565
2566config CPU_HAS_DIEI
2567	depends on !CPU_DIEI_BROKEN
2568	bool
2569
2570config CPU_DIEI_BROKEN
2571	bool
2572
2573config CPU_HAS_RIXI
2574	bool
2575
2576config CPU_NO_LOAD_STORE_LR
2577	bool
2578	help
2579	  CPU lacks support for unaligned load and store instructions:
2580	  LWL, LWR, SWL, SWR (Load/store word left/right).
2581	  LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2582	  systems).
2583
2584#
2585# Vectored interrupt mode is an R2 feature
2586#
2587config CPU_MIPSR2_IRQ_VI
2588	bool
2589
2590#
2591# Extended interrupt mode is an R2 feature
2592#
2593config CPU_MIPSR2_IRQ_EI
2594	bool
2595
2596config CPU_HAS_SYNC
2597	bool
2598	depends on !CPU_R3000
2599	default y
2600
2601#
2602# CPU non-features
2603#
2604config CPU_DADDI_WORKAROUNDS
2605	bool
2606
2607config CPU_R4000_WORKAROUNDS
2608	bool
2609	select CPU_R4400_WORKAROUNDS
2610
2611config CPU_R4400_WORKAROUNDS
2612	bool
2613
2614config CPU_R4X00_BUGS64
2615	bool
2616	default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2617
2618config MIPS_ASID_SHIFT
2619	int
2620	default 6 if CPU_R3000 || CPU_TX39XX
2621	default 0
2622
2623config MIPS_ASID_BITS
2624	int
2625	default 0 if MIPS_ASID_BITS_VARIABLE
2626	default 6 if CPU_R3000 || CPU_TX39XX
2627	default 8
2628
2629config MIPS_ASID_BITS_VARIABLE
2630	bool
2631
2632config MIPS_CRC_SUPPORT
2633	bool
2634
2635# R4600 erratum.  Due to the lack of errata information the exact
2636# technical details aren't known.  I've experimentally found that disabling
2637# interrupts during indexed I-cache flushes seems to be sufficient to deal
2638# with the issue.
2639config WAR_R4600_V1_INDEX_ICACHEOP
2640	bool
2641
2642# Pleasures of the R4600 V1.x.  Cite from the IDT R4600 V1.7 errata:
2643#
2644#  18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
2645#      Hit_Invalidate_D and Create_Dirty_Excl_D should only be
2646#      executed if there is no other dcache activity. If the dcache is
2647#      accessed for another instruction immeidately preceding when these
2648#      cache instructions are executing, it is possible that the dcache
2649#      tag match outputs used by these cache instructions will be
2650#      incorrect. These cache instructions should be preceded by at least
2651#      four instructions that are not any kind of load or store
2652#      instruction.
2653#
2654#      This is not allowed:    lw
2655#                              nop
2656#                              nop
2657#                              nop
2658#                              cache       Hit_Writeback_Invalidate_D
2659#
2660#      This is allowed:        lw
2661#                              nop
2662#                              nop
2663#                              nop
2664#                              nop
2665#                              cache       Hit_Writeback_Invalidate_D
2666config WAR_R4600_V1_HIT_CACHEOP
2667	bool
2668
2669# Writeback and invalidate the primary cache dcache before DMA.
2670#
2671# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
2672# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only
2673# operate correctly if the internal data cache refill buffer is empty.  These
2674# CACHE instructions should be separated from any potential data cache miss
2675# by a load instruction to an uncached address to empty the response buffer."
2676# (Revision 2.0 device errata from IDT available on https://www.idt.com/
2677# in .pdf format.)
2678config WAR_R4600_V2_HIT_CACHEOP
2679	bool
2680
2681# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for
2682# the line which this instruction itself exists, the following
2683# operation is not guaranteed."
2684#
2685# Workaround: do two phase flushing for Index_Invalidate_I
2686config WAR_TX49XX_ICACHE_INDEX_INV
2687	bool
2688
2689# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
2690# opposes it being called that) where invalid instructions in the same
2691# I-cache line worth of instructions being fetched may case spurious
2692# exceptions.
2693config WAR_ICACHE_REFILLS
2694	bool
2695
2696# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that
2697# may cause ll / sc and lld / scd sequences to execute non-atomically.
2698config WAR_R10000_LLSC
2699	bool
2700
2701# 34K core erratum: "Problems Executing the TLBR Instruction"
2702config WAR_MIPS34K_MISSED_ITLB
2703	bool
2704
2705#
2706# - Highmem only makes sense for the 32-bit kernel.
2707# - The current highmem code will only work properly on physically indexed
2708#   caches such as R3000, SB1, R7000 or those that look like they're virtually
2709#   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
2710#   moment we protect the user and offer the highmem option only on machines
2711#   where it's known to be safe.  This will not offer highmem on a few systems
2712#   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2713#   indexed CPUs but we're playing safe.
2714# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2715#   know they might have memory configurations that could make use of highmem
2716#   support.
2717#
2718config HIGHMEM
2719	bool "High Memory Support"
2720	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2721
2722config CPU_SUPPORTS_HIGHMEM
2723	bool
2724
2725config SYS_SUPPORTS_HIGHMEM
2726	bool
2727
2728config SYS_SUPPORTS_SMARTMIPS
2729	bool
2730
2731config SYS_SUPPORTS_MICROMIPS
2732	bool
2733
2734config SYS_SUPPORTS_MIPS16
2735	bool
2736	help
2737	  This option must be set if a kernel might be executed on a MIPS16-
2738	  enabled CPU even if MIPS16 is not actually being used.  In other
2739	  words, it makes the kernel MIPS16-tolerant.
2740
2741config CPU_SUPPORTS_MSA
2742	bool
2743
2744config ARCH_FLATMEM_ENABLE
2745	def_bool y
2746	depends on !NUMA && !CPU_LOONGSON2EF
2747
2748config ARCH_SPARSEMEM_ENABLE
2749	bool
2750	select SPARSEMEM_STATIC if !SGI_IP27
2751
2752config NUMA
2753	bool "NUMA Support"
2754	depends on SYS_SUPPORTS_NUMA
2755	help
2756	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2757	  Access).  This option improves performance on systems with more
2758	  than two nodes; on two node systems it is generally better to
2759	  leave it disabled; on single node systems leave this option
2760	  disabled.
2761
2762config SYS_SUPPORTS_NUMA
2763	bool
2764
2765config HAVE_SETUP_PER_CPU_AREA
2766	def_bool y
2767	depends on NUMA
2768
2769config NEED_PER_CPU_EMBED_FIRST_CHUNK
2770	def_bool y
2771	depends on NUMA
2772
2773config RELOCATABLE
2774	bool "Relocatable kernel"
2775	depends on SYS_SUPPORTS_RELOCATABLE
2776	depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2777		   CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2778		   CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2779		   CPU_P5600 || CAVIUM_OCTEON_SOC
2780	help
2781	  This builds a kernel image that retains relocation information
2782	  so it can be loaded someplace besides the default 1MB.
2783	  The relocations make the kernel binary about 15% larger,
2784	  but are discarded at runtime
2785
2786config RELOCATION_TABLE_SIZE
2787	hex "Relocation table size"
2788	depends on RELOCATABLE
2789	range 0x0 0x01000000
2790	default "0x00100000"
2791	help
2792	  A table of relocation data will be appended to the kernel binary
2793	  and parsed at boot to fix up the relocated kernel.
2794
2795	  This option allows the amount of space reserved for the table to be
2796	  adjusted, although the default of 1Mb should be ok in most cases.
2797
2798	  The build will fail and a valid size suggested if this is too small.
2799
2800	  If unsure, leave at the default value.
2801
2802config RANDOMIZE_BASE
2803	bool "Randomize the address of the kernel image"
2804	depends on RELOCATABLE
2805	help
2806	  Randomizes the physical and virtual address at which the
2807	  kernel image is loaded, as a security feature that
2808	  deters exploit attempts relying on knowledge of the location
2809	  of kernel internals.
2810
2811	  Entropy is generated using any coprocessor 0 registers available.
2812
2813	  The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2814
2815	  If unsure, say N.
2816
2817config RANDOMIZE_BASE_MAX_OFFSET
2818	hex "Maximum kASLR offset" if EXPERT
2819	depends on RANDOMIZE_BASE
2820	range 0x0 0x40000000 if EVA || 64BIT
2821	range 0x0 0x08000000
2822	default "0x01000000"
2823	help
2824	  When kASLR is active, this provides the maximum offset that will
2825	  be applied to the kernel image. It should be set according to the
2826	  amount of physical RAM available in the target system minus
2827	  PHYSICAL_START and must be a power of 2.
2828
2829	  This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2830	  EVA or 64-bit. The default is 16Mb.
2831
2832config NODES_SHIFT
2833	int
2834	default "6"
2835	depends on NEED_MULTIPLE_NODES
2836
2837config HW_PERF_EVENTS
2838	bool "Enable hardware performance counter support for perf events"
2839	depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2840	default y
2841	help
2842	  Enable hardware performance counter support for perf events. If
2843	  disabled, perf events will use software events only.
2844
2845config DMI
2846	bool "Enable DMI scanning"
2847	depends on MACH_LOONGSON64
2848	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2849	default y
2850	help
2851	  Enabled scanning of DMI to identify machine quirks. Say Y
2852	  here unless you have verified that your setup is not
2853	  affected by entries in the DMI blacklist. Required by PNP
2854	  BIOS code.
2855
2856config SMP
2857	bool "Multi-Processing support"
2858	depends on SYS_SUPPORTS_SMP
2859	help
2860	  This enables support for systems with more than one CPU. If you have
2861	  a system with only one CPU, say N. If you have a system with more
2862	  than one CPU, say Y.
2863
2864	  If you say N here, the kernel will run on uni- and multiprocessor
2865	  machines, but will use only one CPU of a multiprocessor machine. If
2866	  you say Y here, the kernel will run on many, but not all,
2867	  uniprocessor machines. On a uniprocessor machine, the kernel
2868	  will run faster if you say N here.
2869
2870	  People using multiprocessor machines who say Y here should also say
2871	  Y to "Enhanced Real Time Clock Support", below.
2872
2873	  See also the SMP-HOWTO available at
2874	  <https://www.tldp.org/docs.html#howto>.
2875
2876	  If you don't know what to do here, say N.
2877
2878config HOTPLUG_CPU
2879	bool "Support for hot-pluggable CPUs"
2880	depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2881	help
2882	  Say Y here to allow turning CPUs off and on. CPUs can be
2883	  controlled through /sys/devices/system/cpu.
2884	  (Note: power management support will enable this option
2885	    automatically on SMP systems. )
2886	  Say N if you want to disable CPU hotplug.
2887
2888config SMP_UP
2889	bool
2890
2891config SYS_SUPPORTS_MIPS_CMP
2892	bool
2893
2894config SYS_SUPPORTS_MIPS_CPS
2895	bool
2896
2897config SYS_SUPPORTS_SMP
2898	bool
2899
2900config NR_CPUS_DEFAULT_4
2901	bool
2902
2903config NR_CPUS_DEFAULT_8
2904	bool
2905
2906config NR_CPUS_DEFAULT_16
2907	bool
2908
2909config NR_CPUS_DEFAULT_32
2910	bool
2911
2912config NR_CPUS_DEFAULT_64
2913	bool
2914
2915config NR_CPUS
2916	int "Maximum number of CPUs (2-256)"
2917	range 2 256
2918	depends on SMP
2919	default "4" if NR_CPUS_DEFAULT_4
2920	default "8" if NR_CPUS_DEFAULT_8
2921	default "16" if NR_CPUS_DEFAULT_16
2922	default "32" if NR_CPUS_DEFAULT_32
2923	default "64" if NR_CPUS_DEFAULT_64
2924	help
2925	  This allows you to specify the maximum number of CPUs which this
2926	  kernel will support.  The maximum supported value is 32 for 32-bit
2927	  kernel and 64 for 64-bit kernels; the minimum value which makes
2928	  sense is 1 for Qemu (useful only for kernel debugging purposes)
2929	  and 2 for all others.
2930
2931	  This is purely to save memory - each supported CPU adds
2932	  approximately eight kilobytes to the kernel image.  For best
2933	  performance should round up your number of processors to the next
2934	  power of two.
2935
2936config MIPS_PERF_SHARED_TC_COUNTERS
2937	bool
2938
2939config MIPS_NR_CPU_NR_MAP_1024
2940	bool
2941
2942config MIPS_NR_CPU_NR_MAP
2943	int
2944	depends on SMP
2945	default 1024 if MIPS_NR_CPU_NR_MAP_1024
2946	default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2947
2948#
2949# Timer Interrupt Frequency Configuration
2950#
2951
2952choice
2953	prompt "Timer frequency"
2954	default HZ_250
2955	help
2956	  Allows the configuration of the timer frequency.
2957
2958	config HZ_24
2959		bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2960
2961	config HZ_48
2962		bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2963
2964	config HZ_100
2965		bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2966
2967	config HZ_128
2968		bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2969
2970	config HZ_250
2971		bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2972
2973	config HZ_256
2974		bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2975
2976	config HZ_1000
2977		bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2978
2979	config HZ_1024
2980		bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2981
2982endchoice
2983
2984config SYS_SUPPORTS_24HZ
2985	bool
2986
2987config SYS_SUPPORTS_48HZ
2988	bool
2989
2990config SYS_SUPPORTS_100HZ
2991	bool
2992
2993config SYS_SUPPORTS_128HZ
2994	bool
2995
2996config SYS_SUPPORTS_250HZ
2997	bool
2998
2999config SYS_SUPPORTS_256HZ
3000	bool
3001
3002config SYS_SUPPORTS_1000HZ
3003	bool
3004
3005config SYS_SUPPORTS_1024HZ
3006	bool
3007
3008config SYS_SUPPORTS_ARBIT_HZ
3009	bool
3010	default y if !SYS_SUPPORTS_24HZ && \
3011		     !SYS_SUPPORTS_48HZ && \
3012		     !SYS_SUPPORTS_100HZ && \
3013		     !SYS_SUPPORTS_128HZ && \
3014		     !SYS_SUPPORTS_250HZ && \
3015		     !SYS_SUPPORTS_256HZ && \
3016		     !SYS_SUPPORTS_1000HZ && \
3017		     !SYS_SUPPORTS_1024HZ
3018
3019config HZ
3020	int
3021	default 24 if HZ_24
3022	default 48 if HZ_48
3023	default 100 if HZ_100
3024	default 128 if HZ_128
3025	default 250 if HZ_250
3026	default 256 if HZ_256
3027	default 1000 if HZ_1000
3028	default 1024 if HZ_1024
3029
3030config SCHED_HRTICK
3031	def_bool HIGH_RES_TIMERS
3032
3033config KEXEC
3034	bool "Kexec system call"
3035	select KEXEC_CORE
3036	help
3037	  kexec is a system call that implements the ability to shutdown your
3038	  current kernel, and to start another kernel.  It is like a reboot
3039	  but it is independent of the system firmware.   And like a reboot
3040	  you can start any kernel with it, not just Linux.
3041
3042	  The name comes from the similarity to the exec system call.
3043
3044	  It is an ongoing process to be certain the hardware in a machine
3045	  is properly shutdown, so do not be surprised if this code does not
3046	  initially work for you.  As of this writing the exact hardware
3047	  interface is strongly in flux, so no good recommendation can be
3048	  made.
3049
3050config CRASH_DUMP
3051	bool "Kernel crash dumps"
3052	help
3053	  Generate crash dump after being started by kexec.
3054	  This should be normally only set in special crash dump kernels
3055	  which are loaded in the main kernel with kexec-tools into
3056	  a specially reserved region and then later executed after
3057	  a crash by kdump/kexec. The crash dump kernel must be compiled
3058	  to a memory address not used by the main kernel or firmware using
3059	  PHYSICAL_START.
3060
3061config PHYSICAL_START
3062	hex "Physical address where the kernel is loaded"
3063	default "0xffffffff84000000"
3064	depends on CRASH_DUMP
3065	help
3066	  This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3067	  If you plan to use kernel for capturing the crash dump change
3068	  this value to start of the reserved region (the "X" value as
3069	  specified in the "crashkernel=YM@XM" command line boot parameter
3070	  passed to the panic-ed kernel).
3071
3072config MIPS_O32_FP64_SUPPORT
3073	bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3074	depends on 32BIT || MIPS32_O32
3075	help
3076	  When this is enabled, the kernel will support use of 64-bit floating
3077	  point registers with binaries using the O32 ABI along with the
3078	  EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3079	  32-bit MIPS systems this support is at the cost of increasing the
3080	  size and complexity of the compiled FPU emulator. Thus if you are
3081	  running a MIPS32 system and know that none of your userland binaries
3082	  will require 64-bit floating point, you may wish to reduce the size
3083	  of your kernel & potentially improve FP emulation performance by
3084	  saying N here.
3085
3086	  Although binutils currently supports use of this flag the details
3087	  concerning its effect upon the O32 ABI in userland are still being
3088	  worked on. In order to avoid userland becoming dependant upon current
3089	  behaviour before the details have been finalised, this option should
3090	  be considered experimental and only enabled by those working upon
3091	  said details.
3092
3093	  If unsure, say N.
3094
3095config USE_OF
3096	bool
3097	select OF
3098	select OF_EARLY_FLATTREE
3099	select IRQ_DOMAIN
3100
3101config UHI_BOOT
3102	bool
3103
3104config BUILTIN_DTB
3105	bool
3106
3107choice
3108	prompt "Kernel appended dtb support" if USE_OF
3109	default MIPS_NO_APPENDED_DTB
3110
3111	config MIPS_NO_APPENDED_DTB
3112		bool "None"
3113		help
3114		  Do not enable appended dtb support.
3115
3116	config MIPS_ELF_APPENDED_DTB
3117		bool "vmlinux"
3118		help
3119		  With this option, the boot code will look for a device tree binary
3120		  DTB) included in the vmlinux ELF section .appended_dtb. By default
3121		  it is empty and the DTB can be appended using binutils command
3122		  objcopy:
3123
3124		    objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3125
3126		  This is meant as a backward compatiblity convenience for those
3127		  systems with a bootloader that can't be upgraded to accommodate
3128		  the documented boot protocol using a device tree.
3129
3130	config MIPS_RAW_APPENDED_DTB
3131		bool "vmlinux.bin or vmlinuz.bin"
3132		help
3133		  With this option, the boot code will look for a device tree binary
3134		  DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3135		  (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3136
3137		  This is meant as a backward compatibility convenience for those
3138		  systems with a bootloader that can't be upgraded to accommodate
3139		  the documented boot protocol using a device tree.
3140
3141		  Beware that there is very little in terms of protection against
3142		  this option being confused by leftover garbage in memory that might
3143		  look like a DTB header after a reboot if no actual DTB is appended
3144		  to vmlinux.bin.  Do not leave this option active in a production kernel
3145		  if you don't intend to always append a DTB.
3146endchoice
3147
3148choice
3149	prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3150	default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3151					 !MACH_LOONGSON64 && !MIPS_MALTA && \
3152					 !CAVIUM_OCTEON_SOC
3153	default MIPS_CMDLINE_FROM_BOOTLOADER
3154
3155	config MIPS_CMDLINE_FROM_DTB
3156		depends on USE_OF
3157		bool "Dtb kernel arguments if available"
3158
3159	config MIPS_CMDLINE_DTB_EXTEND
3160		depends on USE_OF
3161		bool "Extend dtb kernel arguments with bootloader arguments"
3162
3163	config MIPS_CMDLINE_FROM_BOOTLOADER
3164		bool "Bootloader kernel arguments if available"
3165
3166	config MIPS_CMDLINE_BUILTIN_EXTEND
3167		depends on CMDLINE_BOOL
3168		bool "Extend builtin kernel arguments with bootloader arguments"
3169endchoice
3170
3171endmenu
3172
3173config LOCKDEP_SUPPORT
3174	bool
3175	default y
3176
3177config STACKTRACE_SUPPORT
3178	bool
3179	default y
3180
3181config PGTABLE_LEVELS
3182	int
3183	default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3184	default 3 if 64BIT && !PAGE_SIZE_64KB
3185	default 2
3186
3187config MIPS_AUTO_PFN_OFFSET
3188	bool
3189
3190menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3191
3192config PCI_DRIVERS_GENERIC
3193	select PCI_DOMAINS_GENERIC if PCI
3194	bool
3195
3196config PCI_DRIVERS_LEGACY
3197	def_bool !PCI_DRIVERS_GENERIC
3198	select NO_GENERIC_PCI_IOPORT_MAP
3199	select PCI_DOMAINS if PCI
3200
3201#
3202# ISA support is now enabled via select.  Too many systems still have the one
3203# or other ISA chip on the board that users don't know about so don't expect
3204# users to choose the right thing ...
3205#
3206config ISA
3207	bool
3208
3209config TC
3210	bool "TURBOchannel support"
3211	depends on MACH_DECSTATION
3212	help
3213	  TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3214	  processors.  TURBOchannel programming specifications are available
3215	  at:
3216	  <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3217	  and:
3218	  <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3219	  Linux driver support status is documented at:
3220	  <http://www.linux-mips.org/wiki/DECstation>
3221
3222config MMU
3223	bool
3224	default y
3225
3226config ARCH_MMAP_RND_BITS_MIN
3227	default 12 if 64BIT
3228	default 8
3229
3230config ARCH_MMAP_RND_BITS_MAX
3231	default 18 if 64BIT
3232	default 15
3233
3234config ARCH_MMAP_RND_COMPAT_BITS_MIN
3235	default 8
3236
3237config ARCH_MMAP_RND_COMPAT_BITS_MAX
3238	default 15
3239
3240config I8253
3241	bool
3242	select CLKSRC_I8253
3243	select CLKEVT_I8253
3244	select MIPS_EXTERNAL_TIMER
3245
3246config ZONE_DMA
3247	bool
3248
3249config ZONE_DMA32
3250	bool
3251
3252endmenu
3253
3254config TRAD_SIGNALS
3255	bool
3256
3257config MIPS32_COMPAT
3258	bool
3259
3260config COMPAT
3261	bool
3262
3263config SYSVIPC_COMPAT
3264	bool
3265
3266config MIPS32_O32
3267	bool "Kernel support for o32 binaries"
3268	depends on 64BIT
3269	select ARCH_WANT_OLD_COMPAT_IPC
3270	select COMPAT
3271	select MIPS32_COMPAT
3272	select SYSVIPC_COMPAT if SYSVIPC
3273	help
3274	  Select this option if you want to run o32 binaries.  These are pure
3275	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
3276	  existing binaries are in this format.
3277
3278	  If unsure, say Y.
3279
3280config MIPS32_N32
3281	bool "Kernel support for n32 binaries"
3282	depends on 64BIT
3283	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3284	select COMPAT
3285	select MIPS32_COMPAT
3286	select SYSVIPC_COMPAT if SYSVIPC
3287	help
3288	  Select this option if you want to run n32 binaries.  These are
3289	  64-bit binaries using 32-bit quantities for addressing and certain
3290	  data that would normally be 64-bit.  They are used in special
3291	  cases.
3292
3293	  If unsure, say N.
3294
3295config BINFMT_ELF32
3296	bool
3297	default y if MIPS32_O32 || MIPS32_N32
3298	select ELFCORE
3299
3300menu "Power management options"
3301
3302config ARCH_HIBERNATION_POSSIBLE
3303	def_bool y
3304	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3305
3306config ARCH_SUSPEND_POSSIBLE
3307	def_bool y
3308	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3309
3310source "kernel/power/Kconfig"
3311
3312endmenu
3313
3314config MIPS_EXTERNAL_TIMER
3315	bool
3316
3317menu "CPU Power Management"
3318
3319if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3320source "drivers/cpufreq/Kconfig"
3321endif
3322
3323source "drivers/cpuidle/Kconfig"
3324
3325endmenu
3326
3327source "drivers/firmware/Kconfig"
3328
3329source "arch/mips/kvm/Kconfig"
3330
3331source "arch/mips/vdso/Kconfig"
3332