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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_CPU_FINALIZE_INIT
8	select ARCH_HAS_FORTIFY_SOURCE
9	select ARCH_HAS_KCOV
10	select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA
11	select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
12	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
13	select ARCH_HAS_UBSAN_SANITIZE_ALL
14	select ARCH_SUPPORTS_UPROBES
15	select ARCH_USE_BUILTIN_BSWAP
16	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
17	select ARCH_USE_QUEUED_RWLOCKS
18	select ARCH_USE_QUEUED_SPINLOCKS
19	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
20	select ARCH_WANT_IPC_PARSE_VERSION
21	select BUILDTIME_TABLE_SORT
22	select CLONE_BACKWARDS
23	select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
24	select CPU_PM if CPU_IDLE
25	select GENERIC_ATOMIC64 if !64BIT
26	select GENERIC_CLOCKEVENTS
27	select GENERIC_CMOS_UPDATE
28	select GENERIC_CPU_AUTOPROBE
29	select GENERIC_GETTIMEOFDAY
30	select GENERIC_IOMAP
31	select GENERIC_IRQ_PROBE
32	select GENERIC_IRQ_SHOW
33	select GENERIC_ISA_DMA if EISA
34	select GENERIC_LIB_ASHLDI3
35	select GENERIC_LIB_ASHRDI3
36	select GENERIC_LIB_CMPDI2
37	select GENERIC_LIB_LSHRDI3
38	select GENERIC_LIB_UCMPDI2
39	select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
40	select GENERIC_SMP_IDLE_THREAD
41	select GENERIC_TIME_VSYSCALL
42	select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
43	select HANDLE_DOMAIN_IRQ
44	select HAVE_ARCH_COMPILER_H
45	select HAVE_ARCH_JUMP_LABEL
46	select HAVE_ARCH_KGDB
47	select HAVE_ARCH_MMAP_RND_BITS if MMU
48	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
49	select HAVE_ARCH_SECCOMP_FILTER
50	select HAVE_ARCH_TRACEHOOK
51	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
52	select HAVE_ASM_MODVERSIONS
53	select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
54	select HAVE_CONTEXT_TRACKING
55	select HAVE_TIF_NOHZ
56	select HAVE_C_RECORDMCOUNT
57	select HAVE_DEBUG_KMEMLEAK
58	select HAVE_DEBUG_STACKOVERFLOW
59	select HAVE_DMA_CONTIGUOUS
60	select HAVE_DYNAMIC_FTRACE
61	select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
62	select HAVE_EXIT_THREAD
63	select HAVE_FAST_GUP
64	select HAVE_FTRACE_MCOUNT_RECORD
65	select HAVE_FUNCTION_GRAPH_TRACER
66	select HAVE_FUNCTION_TRACER
67	select HAVE_GCC_PLUGINS
68	select HAVE_GENERIC_VDSO
69	select HAVE_IDE
70	select HAVE_IOREMAP_PROT
71	select HAVE_IRQ_EXIT_ON_IRQ_STACK
72	select HAVE_IRQ_TIME_ACCOUNTING
73	select HAVE_KPROBES
74	select HAVE_KRETPROBES
75	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
76	select HAVE_MOD_ARCH_SPECIFIC
77	select HAVE_NMI
78	select HAVE_OPROFILE
79	select HAVE_PERF_EVENTS
80	select HAVE_REGS_AND_STACK_ACCESS_API
81	select HAVE_RSEQ
82	select HAVE_SPARSE_SYSCALL_NR
83	select HAVE_STACKPROTECTOR
84	select HAVE_SYSCALL_TRACEPOINTS
85	select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
86	select IRQ_FORCED_THREADING
87	select ISA if EISA
88	select MODULES_USE_ELF_REL if MODULES
89	select MODULES_USE_ELF_RELA if MODULES && 64BIT
90	select PERF_USE_VMALLOC
91	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
92	select RTC_LIB
93	select SET_FS
94	select SYSCTL_EXCEPTION_TRACE
95	select VIRT_TO_BUS
96
97config MIPS_FIXUP_BIGPHYS_ADDR
98	bool
99
100config MIPS_GENERIC
101	bool
102
103config MACH_INGENIC
104	bool
105	select SYS_SUPPORTS_32BIT_KERNEL
106	select SYS_SUPPORTS_LITTLE_ENDIAN
107	select SYS_SUPPORTS_ZBOOT
108	select DMA_NONCOHERENT
109	select IRQ_MIPS_CPU
110	select PINCTRL
111	select GPIOLIB
112	select COMMON_CLK
113	select GENERIC_IRQ_CHIP
114	select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
115	select USE_OF
116	select CPU_SUPPORTS_CPUFREQ
117	select MIPS_EXTERNAL_TIMER
118
119menu "Machine selection"
120
121choice
122	prompt "System type"
123	default MIPS_GENERIC_KERNEL
124
125config MIPS_GENERIC_KERNEL
126	bool "Generic board-agnostic MIPS kernel"
127	select MIPS_GENERIC
128	select BOOT_RAW
129	select BUILTIN_DTB
130	select CEVT_R4K
131	select CLKSRC_MIPS_GIC
132	select COMMON_CLK
133	select CPU_MIPSR2_IRQ_EI
134	select CPU_MIPSR2_IRQ_VI
135	select CSRC_R4K
136	select DMA_PERDEV_COHERENT
137	select HAVE_PCI
138	select IRQ_MIPS_CPU
139	select MIPS_AUTO_PFN_OFFSET
140	select MIPS_CPU_SCACHE
141	select MIPS_GIC
142	select MIPS_L1_CACHE_SHIFT_7
143	select NO_EXCEPT_FILL
144	select PCI_DRIVERS_GENERIC
145	select SMP_UP if SMP
146	select SWAP_IO_SPACE
147	select SYS_HAS_CPU_MIPS32_R1
148	select SYS_HAS_CPU_MIPS32_R2
149	select SYS_HAS_CPU_MIPS32_R6
150	select SYS_HAS_CPU_MIPS64_R1
151	select SYS_HAS_CPU_MIPS64_R2
152	select SYS_HAS_CPU_MIPS64_R6
153	select SYS_SUPPORTS_32BIT_KERNEL
154	select SYS_SUPPORTS_64BIT_KERNEL
155	select SYS_SUPPORTS_BIG_ENDIAN
156	select SYS_SUPPORTS_HIGHMEM
157	select SYS_SUPPORTS_LITTLE_ENDIAN
158	select SYS_SUPPORTS_MICROMIPS
159	select SYS_SUPPORTS_MIPS16
160	select SYS_SUPPORTS_MIPS_CPS
161	select SYS_SUPPORTS_MULTITHREADING
162	select SYS_SUPPORTS_RELOCATABLE
163	select SYS_SUPPORTS_SMARTMIPS
164	select SYS_SUPPORTS_ZBOOT
165	select UHI_BOOT
166	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
167	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
168	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
169	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
170	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
171	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
172	select USE_OF
173	help
174	  Select this to build a kernel which aims to support multiple boards,
175	  generally using a flattened device tree passed from the bootloader
176	  using the boot protocol defined in the UHI (Unified Hosting
177	  Interface) specification.
178
179config MIPS_ALCHEMY
180	bool "Alchemy processor based machines"
181	select PHYS_ADDR_T_64BIT
182	select CEVT_R4K
183	select CSRC_R4K
184	select IRQ_MIPS_CPU
185	select DMA_MAYBE_COHERENT	# Au1000,1500,1100 aren't, rest is
186	select MIPS_FIXUP_BIGPHYS_ADDR if PCI
187	select SYS_HAS_CPU_MIPS32_R1
188	select SYS_SUPPORTS_32BIT_KERNEL
189	select SYS_SUPPORTS_APM_EMULATION
190	select GPIOLIB
191	select SYS_SUPPORTS_ZBOOT
192	select COMMON_CLK
193
194config AR7
195	bool "Texas Instruments AR7"
196	select BOOT_ELF32
197	select DMA_NONCOHERENT
198	select CEVT_R4K
199	select CSRC_R4K
200	select IRQ_MIPS_CPU
201	select NO_EXCEPT_FILL
202	select SWAP_IO_SPACE
203	select SYS_HAS_CPU_MIPS32_R1
204	select SYS_HAS_EARLY_PRINTK
205	select SYS_SUPPORTS_32BIT_KERNEL
206	select SYS_SUPPORTS_LITTLE_ENDIAN
207	select SYS_SUPPORTS_MIPS16
208	select SYS_SUPPORTS_ZBOOT_UART16550
209	select GPIOLIB
210	select VLYNQ
211	select HAVE_LEGACY_CLK
212	help
213	  Support for the Texas Instruments AR7 System-on-a-Chip
214	  family: TNETD7100, 7200 and 7300.
215
216config ATH25
217	bool "Atheros AR231x/AR531x SoC support"
218	select CEVT_R4K
219	select CSRC_R4K
220	select DMA_NONCOHERENT
221	select IRQ_MIPS_CPU
222	select IRQ_DOMAIN
223	select SYS_HAS_CPU_MIPS32_R1
224	select SYS_SUPPORTS_BIG_ENDIAN
225	select SYS_SUPPORTS_32BIT_KERNEL
226	select SYS_HAS_EARLY_PRINTK
227	help
228	  Support for Atheros AR231x and Atheros AR531x based boards
229
230config ATH79
231	bool "Atheros AR71XX/AR724X/AR913X based boards"
232	select ARCH_HAS_RESET_CONTROLLER
233	select BOOT_RAW
234	select CEVT_R4K
235	select CSRC_R4K
236	select DMA_NONCOHERENT
237	select GPIOLIB
238	select PINCTRL
239	select COMMON_CLK
240	select IRQ_MIPS_CPU
241	select SYS_HAS_CPU_MIPS32_R2
242	select SYS_HAS_EARLY_PRINTK
243	select SYS_SUPPORTS_32BIT_KERNEL
244	select SYS_SUPPORTS_BIG_ENDIAN
245	select SYS_SUPPORTS_MIPS16
246	select SYS_SUPPORTS_ZBOOT_UART_PROM
247	select USE_OF
248	select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
249	help
250	  Support for the Atheros AR71XX/AR724X/AR913X SoCs.
251
252config BMIPS_GENERIC
253	bool "Broadcom Generic BMIPS kernel"
254	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
255	select ARCH_HAS_PHYS_TO_DMA
256	select BOOT_RAW
257	select NO_EXCEPT_FILL
258	select USE_OF
259	select CEVT_R4K
260	select CSRC_R4K
261	select SYNC_R4K
262	select COMMON_CLK
263	select BCM6345_L1_IRQ
264	select BCM7038_L1_IRQ
265	select BCM7120_L2_IRQ
266	select BRCMSTB_L2_IRQ
267	select IRQ_MIPS_CPU
268	select DMA_NONCOHERENT
269	select SYS_SUPPORTS_32BIT_KERNEL
270	select SYS_SUPPORTS_LITTLE_ENDIAN
271	select SYS_SUPPORTS_BIG_ENDIAN
272	select SYS_SUPPORTS_HIGHMEM
273	select SYS_HAS_CPU_BMIPS32_3300
274	select SYS_HAS_CPU_BMIPS4350
275	select SYS_HAS_CPU_BMIPS4380
276	select SYS_HAS_CPU_BMIPS5000
277	select SWAP_IO_SPACE
278	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
279	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
280	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
281	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
282	select HARDIRQS_SW_RESEND
283	help
284	  Build a generic DT-based kernel image that boots on select
285	  BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
286	  box chips.  Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
287	  must be set appropriately for your board.
288
289config BCM47XX
290	bool "Broadcom BCM47XX based boards"
291	select BOOT_RAW
292	select CEVT_R4K
293	select CSRC_R4K
294	select DMA_NONCOHERENT
295	select HAVE_PCI
296	select IRQ_MIPS_CPU
297	select SYS_HAS_CPU_MIPS32_R1
298	select NO_EXCEPT_FILL
299	select SYS_SUPPORTS_32BIT_KERNEL
300	select SYS_SUPPORTS_LITTLE_ENDIAN
301	select SYS_SUPPORTS_MIPS16
302	select SYS_SUPPORTS_ZBOOT
303	select SYS_HAS_EARLY_PRINTK
304	select USE_GENERIC_EARLY_PRINTK_8250
305	select GPIOLIB
306	select LEDS_GPIO_REGISTER
307	select BCM47XX_NVRAM
308	select BCM47XX_SPROM
309	select BCM47XX_SSB if !BCM47XX_BCMA
310	help
311	  Support for BCM47XX based boards
312
313config BCM63XX
314	bool "Broadcom BCM63XX based boards"
315	select BOOT_RAW
316	select CEVT_R4K
317	select CSRC_R4K
318	select SYNC_R4K
319	select DMA_NONCOHERENT
320	select IRQ_MIPS_CPU
321	select SYS_SUPPORTS_32BIT_KERNEL
322	select SYS_SUPPORTS_BIG_ENDIAN
323	select SYS_HAS_EARLY_PRINTK
324	select SYS_HAS_CPU_BMIPS32_3300
325	select SYS_HAS_CPU_BMIPS4350
326	select SYS_HAS_CPU_BMIPS4380
327	select SWAP_IO_SPACE
328	select GPIOLIB
329	select MIPS_L1_CACHE_SHIFT_4
330	select CLKDEV_LOOKUP
331	select HAVE_LEGACY_CLK
332	help
333	  Support for BCM63XX based boards
334
335config MIPS_COBALT
336	bool "Cobalt Server"
337	select CEVT_R4K
338	select CSRC_R4K
339	select CEVT_GT641XX
340	select DMA_NONCOHERENT
341	select FORCE_PCI
342	select I8253
343	select I8259
344	select IRQ_MIPS_CPU
345	select IRQ_GT641XX
346	select PCI_GT64XXX_PCI0
347	select SYS_HAS_CPU_NEVADA
348	select SYS_HAS_EARLY_PRINTK
349	select SYS_SUPPORTS_32BIT_KERNEL
350	select SYS_SUPPORTS_64BIT_KERNEL
351	select SYS_SUPPORTS_LITTLE_ENDIAN
352	select USE_GENERIC_EARLY_PRINTK_8250
353
354config MACH_DECSTATION
355	bool "DECstations"
356	select BOOT_ELF32
357	select CEVT_DS1287
358	select CEVT_R4K if CPU_R4X00
359	select CSRC_IOASIC
360	select CSRC_R4K if CPU_R4X00
361	select CPU_DADDI_WORKAROUNDS if 64BIT
362	select CPU_R4000_WORKAROUNDS if 64BIT
363	select CPU_R4400_WORKAROUNDS if 64BIT
364	select DMA_NONCOHERENT
365	select NO_IOPORT_MAP
366	select IRQ_MIPS_CPU
367	select SYS_HAS_CPU_R3000
368	select SYS_HAS_CPU_R4X00
369	select SYS_SUPPORTS_32BIT_KERNEL
370	select SYS_SUPPORTS_64BIT_KERNEL
371	select SYS_SUPPORTS_LITTLE_ENDIAN
372	select SYS_SUPPORTS_128HZ
373	select SYS_SUPPORTS_256HZ
374	select SYS_SUPPORTS_1024HZ
375	select MIPS_L1_CACHE_SHIFT_4
376	help
377	  This enables support for DEC's MIPS based workstations.  For details
378	  see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
379	  DECstation porting pages on <http://decstation.unix-ag.org/>.
380
381	  If you have one of the following DECstation Models you definitely
382	  want to choose R4xx0 for the CPU Type:
383
384		DECstation 5000/50
385		DECstation 5000/150
386		DECstation 5000/260
387		DECsystem 5900/260
388
389	  otherwise choose R3000.
390
391config MACH_JAZZ
392	bool "Jazz family of machines"
393	select ARC_MEMORY
394	select ARC_PROMLIB
395	select ARCH_MIGHT_HAVE_PC_PARPORT
396	select ARCH_MIGHT_HAVE_PC_SERIO
397	select DMA_OPS
398	select FW_ARC
399	select FW_ARC32
400	select ARCH_MAY_HAVE_PC_FDC
401	select CEVT_R4K
402	select CSRC_R4K
403	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
404	select GENERIC_ISA_DMA
405	select HAVE_PCSPKR_PLATFORM
406	select IRQ_MIPS_CPU
407	select I8253
408	select I8259
409	select ISA
410	select SYS_HAS_CPU_R4X00
411	select SYS_SUPPORTS_32BIT_KERNEL
412	select SYS_SUPPORTS_64BIT_KERNEL
413	select SYS_SUPPORTS_100HZ
414	help
415	  This a family of machines based on the MIPS R4030 chipset which was
416	  used by several vendors to build RISC/os and Windows NT workstations.
417	  Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
418	  Olivetti M700-10 workstations.
419
420config MACH_INGENIC_SOC
421	bool "Ingenic SoC based machines"
422	select MIPS_GENERIC
423	select MACH_INGENIC
424	select SYS_SUPPORTS_ZBOOT_UART16550
425	select CPU_SUPPORTS_CPUFREQ
426	select MIPS_EXTERNAL_TIMER
427
428config LANTIQ
429	bool "Lantiq based platforms"
430	select DMA_NONCOHERENT
431	select IRQ_MIPS_CPU
432	select CEVT_R4K
433	select CSRC_R4K
434	select SYS_HAS_CPU_MIPS32_R1
435	select SYS_HAS_CPU_MIPS32_R2
436	select SYS_SUPPORTS_BIG_ENDIAN
437	select SYS_SUPPORTS_32BIT_KERNEL
438	select SYS_SUPPORTS_MIPS16
439	select SYS_SUPPORTS_MULTITHREADING
440	select SYS_SUPPORTS_VPE_LOADER
441	select SYS_HAS_EARLY_PRINTK
442	select GPIOLIB
443	select SWAP_IO_SPACE
444	select BOOT_RAW
445	select CLKDEV_LOOKUP
446	select HAVE_LEGACY_CLK
447	select USE_OF
448	select PINCTRL
449	select PINCTRL_LANTIQ
450	select ARCH_HAS_RESET_CONTROLLER
451	select RESET_CONTROLLER
452
453config MACH_LOONGSON32
454	bool "Loongson 32-bit family of machines"
455	select SYS_SUPPORTS_ZBOOT
456	help
457	  This enables support for the Loongson-1 family of machines.
458
459	  Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
460	  the Institute of Computing Technology (ICT), Chinese Academy of
461	  Sciences (CAS).
462
463config MACH_LOONGSON2EF
464	bool "Loongson-2E/F family of machines"
465	select SYS_SUPPORTS_ZBOOT
466	help
467	  This enables the support of early Loongson-2E/F family of machines.
468
469config MACH_LOONGSON64
470	bool "Loongson 64-bit family of machines"
471	select ARCH_SPARSEMEM_ENABLE
472	select ARCH_MIGHT_HAVE_PC_PARPORT
473	select ARCH_MIGHT_HAVE_PC_SERIO
474	select GENERIC_ISA_DMA_SUPPORT_BROKEN
475	select BOOT_ELF32
476	select BOARD_SCACHE
477	select CSRC_R4K
478	select CEVT_R4K
479	select CPU_HAS_WB
480	select FORCE_PCI
481	select ISA
482	select I8259
483	select IRQ_MIPS_CPU
484	select NO_EXCEPT_FILL
485	select NR_CPUS_DEFAULT_64
486	select USE_GENERIC_EARLY_PRINTK_8250
487	select PCI_DRIVERS_GENERIC
488	select SYS_HAS_CPU_LOONGSON64
489	select SYS_HAS_EARLY_PRINTK
490	select SYS_SUPPORTS_SMP
491	select SYS_SUPPORTS_HOTPLUG_CPU
492	select SYS_SUPPORTS_NUMA
493	select SYS_SUPPORTS_64BIT_KERNEL
494	select SYS_SUPPORTS_HIGHMEM
495	select SYS_SUPPORTS_LITTLE_ENDIAN
496	select SYS_SUPPORTS_ZBOOT
497	select ZONE_DMA32
498	select NUMA
499	select SMP
500	select COMMON_CLK
501	select USE_OF
502	select BUILTIN_DTB
503	select PCI_HOST_GENERIC
504	help
505	  This enables the support of Loongson-2/3 family of machines.
506
507	  Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
508	  GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
509	  and Loongson-2F which will be removed), developed by the Institute
510	  of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
511
512config MACH_PISTACHIO
513	bool "IMG Pistachio SoC based boards"
514	select BOOT_ELF32
515	select BOOT_RAW
516	select CEVT_R4K
517	select CLKSRC_MIPS_GIC
518	select COMMON_CLK
519	select CSRC_R4K
520	select DMA_NONCOHERENT
521	select GPIOLIB
522	select IRQ_MIPS_CPU
523	select MFD_SYSCON
524	select MIPS_CPU_SCACHE
525	select MIPS_GIC
526	select PINCTRL
527	select REGULATOR
528	select SYS_HAS_CPU_MIPS32_R2
529	select SYS_SUPPORTS_32BIT_KERNEL
530	select SYS_SUPPORTS_LITTLE_ENDIAN
531	select SYS_SUPPORTS_MIPS_CPS
532	select SYS_SUPPORTS_MULTITHREADING
533	select SYS_SUPPORTS_RELOCATABLE
534	select SYS_SUPPORTS_ZBOOT
535	select SYS_HAS_EARLY_PRINTK
536	select USE_GENERIC_EARLY_PRINTK_8250
537	select USE_OF
538	help
539	  This enables support for the IMG Pistachio SoC platform.
540
541config MIPS_MALTA
542	bool "MIPS Malta board"
543	select ARCH_MAY_HAVE_PC_FDC
544	select ARCH_MIGHT_HAVE_PC_PARPORT
545	select ARCH_MIGHT_HAVE_PC_SERIO
546	select BOOT_ELF32
547	select BOOT_RAW
548	select BUILTIN_DTB
549	select CEVT_R4K
550	select CLKSRC_MIPS_GIC
551	select COMMON_CLK
552	select CSRC_R4K
553	select DMA_MAYBE_COHERENT
554	select GENERIC_ISA_DMA
555	select HAVE_PCSPKR_PLATFORM
556	select HAVE_PCI
557	select I8253
558	select I8259
559	select IRQ_MIPS_CPU
560	select MIPS_BONITO64
561	select MIPS_CPU_SCACHE
562	select MIPS_GIC
563	select MIPS_L1_CACHE_SHIFT_6
564	select MIPS_MSC
565	select PCI_GT64XXX_PCI0
566	select SMP_UP if SMP
567	select SWAP_IO_SPACE
568	select SYS_HAS_CPU_MIPS32_R1
569	select SYS_HAS_CPU_MIPS32_R2
570	select SYS_HAS_CPU_MIPS32_R3_5
571	select SYS_HAS_CPU_MIPS32_R5
572	select SYS_HAS_CPU_MIPS32_R6
573	select SYS_HAS_CPU_MIPS64_R1
574	select SYS_HAS_CPU_MIPS64_R2
575	select SYS_HAS_CPU_MIPS64_R6
576	select SYS_HAS_CPU_NEVADA
577	select SYS_HAS_CPU_RM7000
578	select SYS_SUPPORTS_32BIT_KERNEL
579	select SYS_SUPPORTS_64BIT_KERNEL
580	select SYS_SUPPORTS_BIG_ENDIAN
581	select SYS_SUPPORTS_HIGHMEM
582	select SYS_SUPPORTS_LITTLE_ENDIAN
583	select SYS_SUPPORTS_MICROMIPS
584	select SYS_SUPPORTS_MIPS16
585	select SYS_SUPPORTS_MIPS_CMP
586	select SYS_SUPPORTS_MIPS_CPS
587	select SYS_SUPPORTS_MULTITHREADING
588	select SYS_SUPPORTS_RELOCATABLE
589	select SYS_SUPPORTS_SMARTMIPS
590	select SYS_SUPPORTS_VPE_LOADER
591	select SYS_SUPPORTS_ZBOOT
592	select USE_OF
593	select WAR_ICACHE_REFILLS
594	select ZONE_DMA32 if 64BIT
595	help
596	  This enables support for the MIPS Technologies Malta evaluation
597	  board.
598
599config MACH_PIC32
600	bool "Microchip PIC32 Family"
601	help
602	  This enables support for the Microchip PIC32 family of platforms.
603
604	  Microchip PIC32 is a family of general-purpose 32 bit MIPS core
605	  microcontrollers.
606
607config MACH_VR41XX
608	bool "NEC VR4100 series based machines"
609	select CEVT_R4K
610	select CSRC_R4K
611	select SYS_HAS_CPU_VR41XX
612	select SYS_SUPPORTS_MIPS16
613	select GPIOLIB
614
615config RALINK
616	bool "Ralink based machines"
617	select CEVT_R4K
618	select CSRC_R4K
619	select BOOT_RAW
620	select DMA_NONCOHERENT
621	select IRQ_MIPS_CPU
622	select USE_OF
623	select SYS_HAS_CPU_MIPS32_R1
624	select SYS_HAS_CPU_MIPS32_R2
625	select SYS_SUPPORTS_32BIT_KERNEL
626	select SYS_SUPPORTS_LITTLE_ENDIAN
627	select SYS_SUPPORTS_MIPS16
628	select SYS_SUPPORTS_ZBOOT
629	select SYS_HAS_EARLY_PRINTK
630	select CLKDEV_LOOKUP
631	select ARCH_HAS_RESET_CONTROLLER
632	select RESET_CONTROLLER
633
634config SGI_IP22
635	bool "SGI IP22 (Indy/Indigo2)"
636	select ARC_MEMORY
637	select ARC_PROMLIB
638	select FW_ARC
639	select FW_ARC32
640	select ARCH_MIGHT_HAVE_PC_SERIO
641	select BOOT_ELF32
642	select CEVT_R4K
643	select CSRC_R4K
644	select DEFAULT_SGI_PARTITION
645	select DMA_NONCOHERENT
646	select HAVE_EISA
647	select I8253
648	select I8259
649	select IP22_CPU_SCACHE
650	select IRQ_MIPS_CPU
651	select GENERIC_ISA_DMA_SUPPORT_BROKEN
652	select SGI_HAS_I8042
653	select SGI_HAS_INDYDOG
654	select SGI_HAS_HAL2
655	select SGI_HAS_SEEQ
656	select SGI_HAS_WD93
657	select SGI_HAS_ZILOG
658	select SWAP_IO_SPACE
659	select SYS_HAS_CPU_R4X00
660	select SYS_HAS_CPU_R5000
661	select SYS_HAS_EARLY_PRINTK
662	select SYS_SUPPORTS_32BIT_KERNEL
663	select SYS_SUPPORTS_64BIT_KERNEL
664	select SYS_SUPPORTS_BIG_ENDIAN
665	select WAR_R4600_V1_INDEX_ICACHEOP
666	select WAR_R4600_V1_HIT_CACHEOP
667	select WAR_R4600_V2_HIT_CACHEOP
668	select MIPS_L1_CACHE_SHIFT_7
669	help
670	  This are the SGI Indy, Challenge S and Indigo2, as well as certain
671	  OEM variants like the Tandem CMN B006S. To compile a Linux kernel
672	  that runs on these, say Y here.
673
674config SGI_IP27
675	bool "SGI IP27 (Origin200/2000)"
676	select ARCH_HAS_PHYS_TO_DMA
677	select ARCH_SPARSEMEM_ENABLE
678	select FW_ARC
679	select FW_ARC64
680	select ARC_CMDLINE_ONLY
681	select BOOT_ELF64
682	select DEFAULT_SGI_PARTITION
683	select SYS_HAS_EARLY_PRINTK
684	select HAVE_PCI
685	select IRQ_MIPS_CPU
686	select IRQ_DOMAIN_HIERARCHY
687	select NR_CPUS_DEFAULT_64
688	select PCI_DRIVERS_GENERIC
689	select PCI_XTALK_BRIDGE
690	select SYS_HAS_CPU_R10000
691	select SYS_SUPPORTS_64BIT_KERNEL
692	select SYS_SUPPORTS_BIG_ENDIAN
693	select SYS_SUPPORTS_NUMA
694	select SYS_SUPPORTS_SMP
695	select WAR_R10000_LLSC
696	select MIPS_L1_CACHE_SHIFT_7
697	select NUMA
698	help
699	  This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
700	  workstations.  To compile a Linux kernel that runs on these, say Y
701	  here.
702
703config SGI_IP28
704	bool "SGI IP28 (Indigo2 R10k)"
705	select ARC_MEMORY
706	select ARC_PROMLIB
707	select FW_ARC
708	select FW_ARC64
709	select ARCH_MIGHT_HAVE_PC_SERIO
710	select BOOT_ELF64
711	select CEVT_R4K
712	select CSRC_R4K
713	select DEFAULT_SGI_PARTITION
714	select DMA_NONCOHERENT
715	select GENERIC_ISA_DMA_SUPPORT_BROKEN
716	select IRQ_MIPS_CPU
717	select HAVE_EISA
718	select I8253
719	select I8259
720	select SGI_HAS_I8042
721	select SGI_HAS_INDYDOG
722	select SGI_HAS_HAL2
723	select SGI_HAS_SEEQ
724	select SGI_HAS_WD93
725	select SGI_HAS_ZILOG
726	select SWAP_IO_SPACE
727	select SYS_HAS_CPU_R10000
728	select SYS_HAS_EARLY_PRINTK
729	select SYS_SUPPORTS_64BIT_KERNEL
730	select SYS_SUPPORTS_BIG_ENDIAN
731	select WAR_R10000_LLSC
732	select MIPS_L1_CACHE_SHIFT_7
733	help
734	  This is the SGI Indigo2 with R10000 processor.  To compile a Linux
735	  kernel that runs on these, say Y here.
736
737config SGI_IP30
738	bool "SGI IP30 (Octane/Octane2)"
739	select ARCH_HAS_PHYS_TO_DMA
740	select FW_ARC
741	select FW_ARC64
742	select BOOT_ELF64
743	select CEVT_R4K
744	select CSRC_R4K
745	select SYNC_R4K if SMP
746	select ZONE_DMA32
747	select HAVE_PCI
748	select IRQ_MIPS_CPU
749	select IRQ_DOMAIN_HIERARCHY
750	select NR_CPUS_DEFAULT_2
751	select PCI_DRIVERS_GENERIC
752	select PCI_XTALK_BRIDGE
753	select SYS_HAS_EARLY_PRINTK
754	select SYS_HAS_CPU_R10000
755	select SYS_SUPPORTS_64BIT_KERNEL
756	select SYS_SUPPORTS_BIG_ENDIAN
757	select SYS_SUPPORTS_SMP
758	select WAR_R10000_LLSC
759	select MIPS_L1_CACHE_SHIFT_7
760	select ARC_MEMORY
761	help
762	  These are the SGI Octane and Octane2 graphics workstations.  To
763	  compile a Linux kernel that runs on these, say Y here.
764
765config SGI_IP32
766	bool "SGI IP32 (O2)"
767	select ARC_MEMORY
768	select ARC_PROMLIB
769	select ARCH_HAS_PHYS_TO_DMA
770	select FW_ARC
771	select FW_ARC32
772	select BOOT_ELF32
773	select CEVT_R4K
774	select CSRC_R4K
775	select DMA_NONCOHERENT
776	select HAVE_PCI
777	select IRQ_MIPS_CPU
778	select R5000_CPU_SCACHE
779	select RM7000_CPU_SCACHE
780	select SYS_HAS_CPU_R5000
781	select SYS_HAS_CPU_R10000 if BROKEN
782	select SYS_HAS_CPU_RM7000
783	select SYS_HAS_CPU_NEVADA
784	select SYS_SUPPORTS_64BIT_KERNEL
785	select SYS_SUPPORTS_BIG_ENDIAN
786	select WAR_ICACHE_REFILLS
787	help
788	  If you want this kernel to run on SGI O2 workstation, say Y here.
789
790config SIBYTE_CRHINE
791	bool "Sibyte BCM91120C-CRhine"
792	select BOOT_ELF32
793	select SIBYTE_BCM1120
794	select SWAP_IO_SPACE
795	select SYS_HAS_CPU_SB1
796	select SYS_SUPPORTS_BIG_ENDIAN
797	select SYS_SUPPORTS_LITTLE_ENDIAN
798
799config SIBYTE_CARMEL
800	bool "Sibyte BCM91120x-Carmel"
801	select BOOT_ELF32
802	select SIBYTE_BCM1120
803	select SWAP_IO_SPACE
804	select SYS_HAS_CPU_SB1
805	select SYS_SUPPORTS_BIG_ENDIAN
806	select SYS_SUPPORTS_LITTLE_ENDIAN
807
808config SIBYTE_CRHONE
809	bool "Sibyte BCM91125C-CRhone"
810	select BOOT_ELF32
811	select SIBYTE_BCM1125
812	select SWAP_IO_SPACE
813	select SYS_HAS_CPU_SB1
814	select SYS_SUPPORTS_BIG_ENDIAN
815	select SYS_SUPPORTS_HIGHMEM
816	select SYS_SUPPORTS_LITTLE_ENDIAN
817
818config SIBYTE_RHONE
819	bool "Sibyte BCM91125E-Rhone"
820	select BOOT_ELF32
821	select SIBYTE_BCM1125H
822	select SWAP_IO_SPACE
823	select SYS_HAS_CPU_SB1
824	select SYS_SUPPORTS_BIG_ENDIAN
825	select SYS_SUPPORTS_LITTLE_ENDIAN
826
827config SIBYTE_SWARM
828	bool "Sibyte BCM91250A-SWARM"
829	select BOOT_ELF32
830	select HAVE_PATA_PLATFORM
831	select SIBYTE_SB1250
832	select SWAP_IO_SPACE
833	select SYS_HAS_CPU_SB1
834	select SYS_SUPPORTS_BIG_ENDIAN
835	select SYS_SUPPORTS_HIGHMEM
836	select SYS_SUPPORTS_LITTLE_ENDIAN
837	select ZONE_DMA32 if 64BIT
838	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
839
840config SIBYTE_LITTLESUR
841	bool "Sibyte BCM91250C2-LittleSur"
842	select BOOT_ELF32
843	select HAVE_PATA_PLATFORM
844	select SIBYTE_SB1250
845	select SWAP_IO_SPACE
846	select SYS_HAS_CPU_SB1
847	select SYS_SUPPORTS_BIG_ENDIAN
848	select SYS_SUPPORTS_HIGHMEM
849	select SYS_SUPPORTS_LITTLE_ENDIAN
850	select ZONE_DMA32 if 64BIT
851
852config SIBYTE_SENTOSA
853	bool "Sibyte BCM91250E-Sentosa"
854	select BOOT_ELF32
855	select SIBYTE_SB1250
856	select SWAP_IO_SPACE
857	select SYS_HAS_CPU_SB1
858	select SYS_SUPPORTS_BIG_ENDIAN
859	select SYS_SUPPORTS_LITTLE_ENDIAN
860	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
861
862config SIBYTE_BIGSUR
863	bool "Sibyte BCM91480B-BigSur"
864	select BOOT_ELF32
865	select NR_CPUS_DEFAULT_4
866	select SIBYTE_BCM1x80
867	select SWAP_IO_SPACE
868	select SYS_HAS_CPU_SB1
869	select SYS_SUPPORTS_BIG_ENDIAN
870	select SYS_SUPPORTS_HIGHMEM
871	select SYS_SUPPORTS_LITTLE_ENDIAN
872	select ZONE_DMA32 if 64BIT
873	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
874
875config SNI_RM
876	bool "SNI RM200/300/400"
877	select ARC_MEMORY
878	select ARC_PROMLIB
879	select FW_ARC if CPU_LITTLE_ENDIAN
880	select FW_ARC32 if CPU_LITTLE_ENDIAN
881	select FW_SNIPROM if CPU_BIG_ENDIAN
882	select ARCH_MAY_HAVE_PC_FDC
883	select ARCH_MIGHT_HAVE_PC_PARPORT
884	select ARCH_MIGHT_HAVE_PC_SERIO
885	select BOOT_ELF32
886	select CEVT_R4K
887	select CSRC_R4K
888	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
889	select DMA_NONCOHERENT
890	select GENERIC_ISA_DMA
891	select HAVE_EISA
892	select HAVE_PCSPKR_PLATFORM
893	select HAVE_PCI
894	select IRQ_MIPS_CPU
895	select I8253
896	select I8259
897	select ISA
898	select MIPS_L1_CACHE_SHIFT_6
899	select SWAP_IO_SPACE if CPU_BIG_ENDIAN
900	select SYS_HAS_CPU_R4X00
901	select SYS_HAS_CPU_R5000
902	select SYS_HAS_CPU_R10000
903	select R5000_CPU_SCACHE
904	select SYS_HAS_EARLY_PRINTK
905	select SYS_SUPPORTS_32BIT_KERNEL
906	select SYS_SUPPORTS_64BIT_KERNEL
907	select SYS_SUPPORTS_BIG_ENDIAN
908	select SYS_SUPPORTS_HIGHMEM
909	select SYS_SUPPORTS_LITTLE_ENDIAN
910	select WAR_R4600_V2_HIT_CACHEOP
911	help
912	  The SNI RM200/300/400 are MIPS-based machines manufactured by
913	  Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
914	  Technology and now in turn merged with Fujitsu.  Say Y here to
915	  support this machine type.
916
917config MACH_TX39XX
918	bool "Toshiba TX39 series based machines"
919
920config MACH_TX49XX
921	bool "Toshiba TX49 series based machines"
922	select WAR_TX49XX_ICACHE_INDEX_INV
923
924config MIKROTIK_RB532
925	bool "Mikrotik RB532 boards"
926	select CEVT_R4K
927	select CSRC_R4K
928	select DMA_NONCOHERENT
929	select HAVE_PCI
930	select IRQ_MIPS_CPU
931	select SYS_HAS_CPU_MIPS32_R1
932	select SYS_SUPPORTS_32BIT_KERNEL
933	select SYS_SUPPORTS_LITTLE_ENDIAN
934	select SWAP_IO_SPACE
935	select BOOT_RAW
936	select GPIOLIB
937	select MIPS_L1_CACHE_SHIFT_4
938	help
939	  Support the Mikrotik(tm) RouterBoard 532 series,
940	  based on the IDT RC32434 SoC.
941
942config CAVIUM_OCTEON_SOC
943	bool "Cavium Networks Octeon SoC based boards"
944	select CEVT_R4K
945	select ARCH_HAS_PHYS_TO_DMA
946	select HAVE_RAPIDIO
947	select PHYS_ADDR_T_64BIT
948	select SYS_SUPPORTS_64BIT_KERNEL
949	select SYS_SUPPORTS_BIG_ENDIAN
950	select EDAC_SUPPORT
951	select EDAC_ATOMIC_SCRUB
952	select SYS_SUPPORTS_LITTLE_ENDIAN
953	select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
954	select SYS_HAS_EARLY_PRINTK
955	select SYS_HAS_CPU_CAVIUM_OCTEON
956	select HAVE_PCI
957	select HAVE_PLAT_DELAY
958	select HAVE_PLAT_FW_INIT_CMDLINE
959	select HAVE_PLAT_MEMCPY
960	select ZONE_DMA32
961	select HOLES_IN_ZONE
962	select GPIOLIB
963	select USE_OF
964	select ARCH_SPARSEMEM_ENABLE
965	select SYS_SUPPORTS_SMP
966	select NR_CPUS_DEFAULT_64
967	select MIPS_NR_CPU_NR_MAP_1024
968	select BUILTIN_DTB
969	select MTD_COMPLEX_MAPPINGS
970	select SWIOTLB
971	select SYS_SUPPORTS_RELOCATABLE
972	help
973	  This option supports all of the Octeon reference boards from Cavium
974	  Networks. It builds a kernel that dynamically determines the Octeon
975	  CPU type and supports all known board reference implementations.
976	  Some of the supported boards are:
977		EBT3000
978		EBH3000
979		EBH3100
980		Thunder
981		Kodama
982		Hikari
983	  Say Y here for most Octeon reference boards.
984
985config NLM_XLR_BOARD
986	bool "Netlogic XLR/XLS based systems"
987	select BOOT_ELF32
988	select NLM_COMMON
989	select SYS_HAS_CPU_XLR
990	select SYS_SUPPORTS_SMP
991	select HAVE_PCI
992	select SWAP_IO_SPACE
993	select SYS_SUPPORTS_32BIT_KERNEL
994	select SYS_SUPPORTS_64BIT_KERNEL
995	select PHYS_ADDR_T_64BIT
996	select SYS_SUPPORTS_BIG_ENDIAN
997	select SYS_SUPPORTS_HIGHMEM
998	select NR_CPUS_DEFAULT_32
999	select CEVT_R4K
1000	select CSRC_R4K
1001	select IRQ_MIPS_CPU
1002	select ZONE_DMA32 if 64BIT
1003	select SYNC_R4K
1004	select SYS_HAS_EARLY_PRINTK
1005	select SYS_SUPPORTS_ZBOOT
1006	select SYS_SUPPORTS_ZBOOT_UART16550
1007	help
1008	  Support for systems based on Netlogic XLR and XLS processors.
1009	  Say Y here if you have a XLR or XLS based board.
1010
1011config NLM_XLP_BOARD
1012	bool "Netlogic XLP based systems"
1013	select BOOT_ELF32
1014	select NLM_COMMON
1015	select SYS_HAS_CPU_XLP
1016	select SYS_SUPPORTS_SMP
1017	select HAVE_PCI
1018	select SYS_SUPPORTS_32BIT_KERNEL
1019	select SYS_SUPPORTS_64BIT_KERNEL
1020	select PHYS_ADDR_T_64BIT
1021	select GPIOLIB
1022	select SYS_SUPPORTS_BIG_ENDIAN
1023	select SYS_SUPPORTS_LITTLE_ENDIAN
1024	select SYS_SUPPORTS_HIGHMEM
1025	select NR_CPUS_DEFAULT_32
1026	select CEVT_R4K
1027	select CSRC_R4K
1028	select IRQ_MIPS_CPU
1029	select ZONE_DMA32 if 64BIT
1030	select SYNC_R4K
1031	select SYS_HAS_EARLY_PRINTK
1032	select USE_OF
1033	select SYS_SUPPORTS_ZBOOT
1034	select SYS_SUPPORTS_ZBOOT_UART16550
1035	help
1036	  This board is based on Netlogic XLP Processor.
1037	  Say Y here if you have a XLP based board.
1038
1039endchoice
1040
1041source "arch/mips/alchemy/Kconfig"
1042source "arch/mips/ath25/Kconfig"
1043source "arch/mips/ath79/Kconfig"
1044source "arch/mips/bcm47xx/Kconfig"
1045source "arch/mips/bcm63xx/Kconfig"
1046source "arch/mips/bmips/Kconfig"
1047source "arch/mips/generic/Kconfig"
1048source "arch/mips/ingenic/Kconfig"
1049source "arch/mips/jazz/Kconfig"
1050source "arch/mips/lantiq/Kconfig"
1051source "arch/mips/pic32/Kconfig"
1052source "arch/mips/pistachio/Kconfig"
1053source "arch/mips/ralink/Kconfig"
1054source "arch/mips/sgi-ip27/Kconfig"
1055source "arch/mips/sibyte/Kconfig"
1056source "arch/mips/txx9/Kconfig"
1057source "arch/mips/vr41xx/Kconfig"
1058source "arch/mips/cavium-octeon/Kconfig"
1059source "arch/mips/loongson2ef/Kconfig"
1060source "arch/mips/loongson32/Kconfig"
1061source "arch/mips/loongson64/Kconfig"
1062source "arch/mips/netlogic/Kconfig"
1063
1064endmenu
1065
1066config GENERIC_HWEIGHT
1067	bool
1068	default y
1069
1070config GENERIC_CALIBRATE_DELAY
1071	bool
1072	default y
1073
1074config SCHED_OMIT_FRAME_POINTER
1075	bool
1076	default y
1077
1078#
1079# Select some configuration options automatically based on user selections.
1080#
1081config FW_ARC
1082	bool
1083
1084config ARCH_MAY_HAVE_PC_FDC
1085	bool
1086
1087config BOOT_RAW
1088	bool
1089
1090config CEVT_BCM1480
1091	bool
1092
1093config CEVT_DS1287
1094	bool
1095
1096config CEVT_GT641XX
1097	bool
1098
1099config CEVT_R4K
1100	bool
1101
1102config CEVT_SB1250
1103	bool
1104
1105config CEVT_TXX9
1106	bool
1107
1108config CSRC_BCM1480
1109	bool
1110
1111config CSRC_IOASIC
1112	bool
1113
1114config CSRC_R4K
1115	select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1116	bool
1117
1118config CSRC_SB1250
1119	bool
1120
1121config MIPS_CLOCK_VSYSCALL
1122	def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1123
1124config GPIO_TXX9
1125	select GPIOLIB
1126	bool
1127
1128config FW_CFE
1129	bool
1130
1131config ARCH_SUPPORTS_UPROBES
1132	bool
1133
1134config DMA_MAYBE_COHERENT
1135	select ARCH_HAS_DMA_COHERENCE_H
1136	select DMA_NONCOHERENT
1137	bool
1138
1139config DMA_PERDEV_COHERENT
1140	bool
1141	select ARCH_HAS_SETUP_DMA_OPS
1142	select DMA_NONCOHERENT
1143
1144config DMA_NONCOHERENT
1145	bool
1146	#
1147	# MIPS allows mixing "slightly different" Cacheability and Coherency
1148	# Attribute bits.  It is believed that the uncached access through
1149	# KSEG1 and the implementation specific "uncached accelerated" used
1150	# by pgprot_writcombine can be mixed, and the latter sometimes provides
1151	# significant advantages.
1152	#
1153	select ARCH_HAS_DMA_WRITE_COMBINE
1154	select ARCH_HAS_DMA_PREP_COHERENT
1155	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1156	select ARCH_HAS_DMA_SET_UNCACHED
1157	select DMA_NONCOHERENT_MMAP
1158	select NEED_DMA_MAP_STATE
1159
1160config SYS_HAS_EARLY_PRINTK
1161	bool
1162
1163config SYS_SUPPORTS_HOTPLUG_CPU
1164	bool
1165
1166config MIPS_BONITO64
1167	bool
1168
1169config MIPS_MSC
1170	bool
1171
1172config SYNC_R4K
1173	bool
1174
1175config NO_IOPORT_MAP
1176	def_bool n
1177
1178config GENERIC_CSUM
1179	def_bool CPU_NO_LOAD_STORE_LR
1180
1181config GENERIC_ISA_DMA
1182	bool
1183	select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1184	select ISA_DMA_API
1185
1186config GENERIC_ISA_DMA_SUPPORT_BROKEN
1187	bool
1188	select GENERIC_ISA_DMA
1189
1190config HAVE_PLAT_DELAY
1191	bool
1192
1193config HAVE_PLAT_FW_INIT_CMDLINE
1194	bool
1195
1196config HAVE_PLAT_MEMCPY
1197	bool
1198
1199config ISA_DMA_API
1200	bool
1201
1202config SYS_SUPPORTS_RELOCATABLE
1203	bool
1204	help
1205	  Selected if the platform supports relocating the kernel.
1206	  The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1207	  to allow access to command line and entropy sources.
1208
1209config MIPS_CBPF_JIT
1210	def_bool y
1211	depends on BPF_JIT && HAVE_CBPF_JIT
1212
1213config MIPS_EBPF_JIT
1214	def_bool y
1215	depends on BPF_JIT && HAVE_EBPF_JIT
1216
1217
1218#
1219# Endianness selection.  Sufficiently obscure so many users don't know what to
1220# answer,so we try hard to limit the available choices.  Also the use of a
1221# choice statement should be more obvious to the user.
1222#
1223choice
1224	prompt "Endianness selection"
1225	help
1226	  Some MIPS machines can be configured for either little or big endian
1227	  byte order. These modes require different kernels and a different
1228	  Linux distribution.  In general there is one preferred byteorder for a
1229	  particular system but some systems are just as commonly used in the
1230	  one or the other endianness.
1231
1232config CPU_BIG_ENDIAN
1233	bool "Big endian"
1234	depends on SYS_SUPPORTS_BIG_ENDIAN
1235
1236config CPU_LITTLE_ENDIAN
1237	bool "Little endian"
1238	depends on SYS_SUPPORTS_LITTLE_ENDIAN
1239
1240endchoice
1241
1242config EXPORT_UASM
1243	bool
1244
1245config SYS_SUPPORTS_APM_EMULATION
1246	bool
1247
1248config SYS_SUPPORTS_BIG_ENDIAN
1249	bool
1250
1251config SYS_SUPPORTS_LITTLE_ENDIAN
1252	bool
1253
1254config SYS_SUPPORTS_HUGETLBFS
1255	bool
1256	depends on CPU_SUPPORTS_HUGEPAGES
1257	default y
1258
1259config MIPS_HUGE_TLB_SUPPORT
1260	def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1261
1262config IRQ_CPU_RM7K
1263	bool
1264
1265config IRQ_MSP_SLP
1266	bool
1267
1268config IRQ_MSP_CIC
1269	bool
1270
1271config IRQ_TXX9
1272	bool
1273
1274config IRQ_GT641XX
1275	bool
1276
1277config PCI_GT64XXX_PCI0
1278	bool
1279
1280config PCI_XTALK_BRIDGE
1281	bool
1282
1283config NO_EXCEPT_FILL
1284	bool
1285
1286config MIPS_SPRAM
1287	bool
1288
1289config SWAP_IO_SPACE
1290	bool
1291
1292config SGI_HAS_INDYDOG
1293	bool
1294
1295config SGI_HAS_HAL2
1296	bool
1297
1298config SGI_HAS_SEEQ
1299	bool
1300
1301config SGI_HAS_WD93
1302	bool
1303
1304config SGI_HAS_ZILOG
1305	bool
1306
1307config SGI_HAS_I8042
1308	bool
1309
1310config DEFAULT_SGI_PARTITION
1311	bool
1312
1313config FW_ARC32
1314	bool
1315
1316config FW_SNIPROM
1317	bool
1318
1319config BOOT_ELF32
1320	bool
1321
1322config MIPS_L1_CACHE_SHIFT_4
1323	bool
1324
1325config MIPS_L1_CACHE_SHIFT_5
1326	bool
1327
1328config MIPS_L1_CACHE_SHIFT_6
1329	bool
1330
1331config MIPS_L1_CACHE_SHIFT_7
1332	bool
1333
1334config MIPS_L1_CACHE_SHIFT
1335	int
1336	default "7" if MIPS_L1_CACHE_SHIFT_7
1337	default "6" if MIPS_L1_CACHE_SHIFT_6
1338	default "5" if MIPS_L1_CACHE_SHIFT_5
1339	default "4" if MIPS_L1_CACHE_SHIFT_4
1340	default "5"
1341
1342config ARC_CMDLINE_ONLY
1343	bool
1344
1345config ARC_CONSOLE
1346	bool "ARC console support"
1347	depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1348
1349config ARC_MEMORY
1350	bool
1351
1352config ARC_PROMLIB
1353	bool
1354
1355config FW_ARC64
1356	bool
1357
1358config BOOT_ELF64
1359	bool
1360
1361menu "CPU selection"
1362
1363choice
1364	prompt "CPU type"
1365	default CPU_R4X00
1366
1367config CPU_LOONGSON64
1368	bool "Loongson 64-bit CPU"
1369	depends on SYS_HAS_CPU_LOONGSON64
1370	select ARCH_HAS_PHYS_TO_DMA
1371	select CPU_MIPSR2
1372	select CPU_HAS_PREFETCH
1373	select CPU_SUPPORTS_64BIT_KERNEL
1374	select CPU_SUPPORTS_HIGHMEM
1375	select CPU_SUPPORTS_HUGEPAGES
1376	select CPU_SUPPORTS_MSA
1377	select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1378	select CPU_MIPSR2_IRQ_VI
1379	select WEAK_ORDERING
1380	select WEAK_REORDERING_BEYOND_LLSC
1381	select MIPS_ASID_BITS_VARIABLE
1382	select MIPS_PGD_C0_CONTEXT
1383	select MIPS_L1_CACHE_SHIFT_6
1384	select MIPS_FP_SUPPORT
1385	select GPIOLIB
1386	select SWIOTLB
1387	select HAVE_KVM
1388	help
1389		The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1390		cores implements the MIPS64R2 instruction set with many extensions,
1391		including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1392		3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1393		Loongson-2E/2F is not covered here and will be removed in future.
1394
1395config LOONGSON3_ENHANCEMENT
1396	bool "New Loongson-3 CPU Enhancements"
1397	default n
1398	depends on CPU_LOONGSON64
1399	help
1400	  New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1401	  R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1402	  FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1403	  Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1404	  Fast TLB refill support, etc.
1405
1406	  This option enable those enhancements which are not probed at run
1407	  time. If you want a generic kernel to run on all Loongson 3 machines,
1408	  please say 'N' here. If you want a high-performance kernel to run on
1409	  new Loongson-3 machines only, please say 'Y' here.
1410
1411config CPU_LOONGSON3_WORKAROUNDS
1412	bool "Old Loongson-3 LLSC Workarounds"
1413	default y if SMP
1414	depends on CPU_LOONGSON64
1415	help
1416	  Loongson-3 processors have the llsc issues which require workarounds.
1417	  Without workarounds the system may hang unexpectedly.
1418
1419	  Newer Loongson-3 will fix these issues and no workarounds are needed.
1420	  The workarounds have no significant side effect on them but may
1421	  decrease the performance of the system so this option should be
1422	  disabled unless the kernel is intended to be run on old systems.
1423
1424	  If unsure, please say Y.
1425
1426config CPU_LOONGSON3_CPUCFG_EMULATION
1427	bool "Emulate the CPUCFG instruction on older Loongson cores"
1428	default y
1429	depends on CPU_LOONGSON64
1430	help
1431	  Loongson-3A R4 and newer have the CPUCFG instruction available for
1432	  userland to query CPU capabilities, much like CPUID on x86. This
1433	  option provides emulation of the instruction on older Loongson
1434	  cores, back to Loongson-3A1000.
1435
1436	  If unsure, please say Y.
1437
1438config CPU_LOONGSON2E
1439	bool "Loongson 2E"
1440	depends on SYS_HAS_CPU_LOONGSON2E
1441	select CPU_LOONGSON2EF
1442	help
1443	  The Loongson 2E processor implements the MIPS III instruction set
1444	  with many extensions.
1445
1446	  It has an internal FPGA northbridge, which is compatible to
1447	  bonito64.
1448
1449config CPU_LOONGSON2F
1450	bool "Loongson 2F"
1451	depends on SYS_HAS_CPU_LOONGSON2F
1452	select CPU_LOONGSON2EF
1453	select GPIOLIB
1454	help
1455	  The Loongson 2F processor implements the MIPS III instruction set
1456	  with many extensions.
1457
1458	  Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1459	  have a similar programming interface with FPGA northbridge used in
1460	  Loongson2E.
1461
1462config CPU_LOONGSON1B
1463	bool "Loongson 1B"
1464	depends on SYS_HAS_CPU_LOONGSON1B
1465	select CPU_LOONGSON32
1466	select LEDS_GPIO_REGISTER
1467	help
1468	  The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1469	  Release 1 instruction set and part of the MIPS32 Release 2
1470	  instruction set.
1471
1472config CPU_LOONGSON1C
1473	bool "Loongson 1C"
1474	depends on SYS_HAS_CPU_LOONGSON1C
1475	select CPU_LOONGSON32
1476	select LEDS_GPIO_REGISTER
1477	help
1478	  The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1479	  Release 1 instruction set and part of the MIPS32 Release 2
1480	  instruction set.
1481
1482config CPU_MIPS32_R1
1483	bool "MIPS32 Release 1"
1484	depends on SYS_HAS_CPU_MIPS32_R1
1485	select CPU_HAS_PREFETCH
1486	select CPU_SUPPORTS_32BIT_KERNEL
1487	select CPU_SUPPORTS_HIGHMEM
1488	help
1489	  Choose this option to build a kernel for release 1 or later of the
1490	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1491	  MIPS processor are based on a MIPS32 processor.  If you know the
1492	  specific type of processor in your system, choose those that one
1493	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1494	  Release 2 of the MIPS32 architecture is available since several
1495	  years so chances are you even have a MIPS32 Release 2 processor
1496	  in which case you should choose CPU_MIPS32_R2 instead for better
1497	  performance.
1498
1499config CPU_MIPS32_R2
1500	bool "MIPS32 Release 2"
1501	depends on SYS_HAS_CPU_MIPS32_R2
1502	select CPU_HAS_PREFETCH
1503	select CPU_SUPPORTS_32BIT_KERNEL
1504	select CPU_SUPPORTS_HIGHMEM
1505	select CPU_SUPPORTS_MSA
1506	select HAVE_KVM
1507	help
1508	  Choose this option to build a kernel for release 2 or later of the
1509	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1510	  MIPS processor are based on a MIPS32 processor.  If you know the
1511	  specific type of processor in your system, choose those that one
1512	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1513
1514config CPU_MIPS32_R5
1515	bool "MIPS32 Release 5"
1516	depends on SYS_HAS_CPU_MIPS32_R5
1517	select CPU_HAS_PREFETCH
1518	select CPU_SUPPORTS_32BIT_KERNEL
1519	select CPU_SUPPORTS_HIGHMEM
1520	select CPU_SUPPORTS_MSA
1521	select HAVE_KVM
1522	select MIPS_O32_FP64_SUPPORT
1523	help
1524	  Choose this option to build a kernel for release 5 or later of the
1525	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1526	  family, are based on a MIPS32r5 processor. If you own an older
1527	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1528
1529config CPU_MIPS32_R6
1530	bool "MIPS32 Release 6"
1531	depends on SYS_HAS_CPU_MIPS32_R6
1532	select CPU_HAS_PREFETCH
1533	select CPU_NO_LOAD_STORE_LR
1534	select CPU_SUPPORTS_32BIT_KERNEL
1535	select CPU_SUPPORTS_HIGHMEM
1536	select CPU_SUPPORTS_MSA
1537	select HAVE_KVM
1538	select MIPS_O32_FP64_SUPPORT
1539	help
1540	  Choose this option to build a kernel for release 6 or later of the
1541	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1542	  family, are based on a MIPS32r6 processor. If you own an older
1543	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1544
1545config CPU_MIPS64_R1
1546	bool "MIPS64 Release 1"
1547	depends on SYS_HAS_CPU_MIPS64_R1
1548	select CPU_HAS_PREFETCH
1549	select CPU_SUPPORTS_32BIT_KERNEL
1550	select CPU_SUPPORTS_64BIT_KERNEL
1551	select CPU_SUPPORTS_HIGHMEM
1552	select CPU_SUPPORTS_HUGEPAGES
1553	help
1554	  Choose this option to build a kernel for release 1 or later of the
1555	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1556	  MIPS processor are based on a MIPS64 processor.  If you know the
1557	  specific type of processor in your system, choose those that one
1558	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1559	  Release 2 of the MIPS64 architecture is available since several
1560	  years so chances are you even have a MIPS64 Release 2 processor
1561	  in which case you should choose CPU_MIPS64_R2 instead for better
1562	  performance.
1563
1564config CPU_MIPS64_R2
1565	bool "MIPS64 Release 2"
1566	depends on SYS_HAS_CPU_MIPS64_R2
1567	select CPU_HAS_PREFETCH
1568	select CPU_SUPPORTS_32BIT_KERNEL
1569	select CPU_SUPPORTS_64BIT_KERNEL
1570	select CPU_SUPPORTS_HIGHMEM
1571	select CPU_SUPPORTS_HUGEPAGES
1572	select CPU_SUPPORTS_MSA
1573	select HAVE_KVM
1574	help
1575	  Choose this option to build a kernel for release 2 or later of the
1576	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1577	  MIPS processor are based on a MIPS64 processor.  If you know the
1578	  specific type of processor in your system, choose those that one
1579	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1580
1581config CPU_MIPS64_R5
1582	bool "MIPS64 Release 5"
1583	depends on SYS_HAS_CPU_MIPS64_R5
1584	select CPU_HAS_PREFETCH
1585	select CPU_SUPPORTS_32BIT_KERNEL
1586	select CPU_SUPPORTS_64BIT_KERNEL
1587	select CPU_SUPPORTS_HIGHMEM
1588	select CPU_SUPPORTS_HUGEPAGES
1589	select CPU_SUPPORTS_MSA
1590	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1591	select HAVE_KVM
1592	help
1593	  Choose this option to build a kernel for release 5 or later of the
1594	  MIPS64 architecture.  This is a intermediate MIPS architecture
1595	  release partly implementing release 6 features. Though there is no
1596	  any hardware known to be based on this release.
1597
1598config CPU_MIPS64_R6
1599	bool "MIPS64 Release 6"
1600	depends on SYS_HAS_CPU_MIPS64_R6
1601	select CPU_HAS_PREFETCH
1602	select CPU_NO_LOAD_STORE_LR
1603	select CPU_SUPPORTS_32BIT_KERNEL
1604	select CPU_SUPPORTS_64BIT_KERNEL
1605	select CPU_SUPPORTS_HIGHMEM
1606	select CPU_SUPPORTS_HUGEPAGES
1607	select CPU_SUPPORTS_MSA
1608	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1609	select HAVE_KVM
1610	help
1611	  Choose this option to build a kernel for release 6 or later of the
1612	  MIPS64 architecture.  New MIPS processors, starting with the Warrior
1613	  family, are based on a MIPS64r6 processor. If you own an older
1614	  processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1615
1616config CPU_P5600
1617	bool "MIPS Warrior P5600"
1618	depends on SYS_HAS_CPU_P5600
1619	select CPU_HAS_PREFETCH
1620	select CPU_SUPPORTS_32BIT_KERNEL
1621	select CPU_SUPPORTS_HIGHMEM
1622	select CPU_SUPPORTS_MSA
1623	select CPU_SUPPORTS_CPUFREQ
1624	select CPU_MIPSR2_IRQ_VI
1625	select CPU_MIPSR2_IRQ_EI
1626	select HAVE_KVM
1627	select MIPS_O32_FP64_SUPPORT
1628	help
1629	  Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1630	  It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1631	  MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1632	  level features like up to six P5600 calculation cores, CM2 with L2
1633	  cache, IOCU/IOMMU (though might be unused depending on the system-
1634	  specific IP core configuration), GIC, CPC, virtualisation module,
1635	  eJTAG and PDtrace.
1636
1637config CPU_R3000
1638	bool "R3000"
1639	depends on SYS_HAS_CPU_R3000
1640	select CPU_HAS_WB
1641	select CPU_R3K_TLB
1642	select CPU_SUPPORTS_32BIT_KERNEL
1643	select CPU_SUPPORTS_HIGHMEM
1644	help
1645	  Please make sure to pick the right CPU type. Linux/MIPS is not
1646	  designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1647	  *not* work on R4000 machines and vice versa.  However, since most
1648	  of the supported machines have an R4000 (or similar) CPU, R4x00
1649	  might be a safe bet.  If the resulting kernel does not work,
1650	  try to recompile with R3000.
1651
1652config CPU_TX39XX
1653	bool "R39XX"
1654	depends on SYS_HAS_CPU_TX39XX
1655	select CPU_SUPPORTS_32BIT_KERNEL
1656	select CPU_R3K_TLB
1657
1658config CPU_VR41XX
1659	bool "R41xx"
1660	depends on SYS_HAS_CPU_VR41XX
1661	select CPU_SUPPORTS_32BIT_KERNEL
1662	select CPU_SUPPORTS_64BIT_KERNEL
1663	help
1664	  The options selects support for the NEC VR4100 series of processors.
1665	  Only choose this option if you have one of these processors as a
1666	  kernel built with this option will not run on any other type of
1667	  processor or vice versa.
1668
1669config CPU_R4X00
1670	bool "R4x00"
1671	depends on SYS_HAS_CPU_R4X00
1672	select CPU_SUPPORTS_32BIT_KERNEL
1673	select CPU_SUPPORTS_64BIT_KERNEL
1674	select CPU_SUPPORTS_HUGEPAGES
1675	help
1676	  MIPS Technologies R4000-series processors other than 4300, including
1677	  the R4000, R4400, R4600, and 4700.
1678
1679config CPU_TX49XX
1680	bool "R49XX"
1681	depends on SYS_HAS_CPU_TX49XX
1682	select CPU_HAS_PREFETCH
1683	select CPU_SUPPORTS_32BIT_KERNEL
1684	select CPU_SUPPORTS_64BIT_KERNEL
1685	select CPU_SUPPORTS_HUGEPAGES
1686
1687config CPU_R5000
1688	bool "R5000"
1689	depends on SYS_HAS_CPU_R5000
1690	select CPU_SUPPORTS_32BIT_KERNEL
1691	select CPU_SUPPORTS_64BIT_KERNEL
1692	select CPU_SUPPORTS_HUGEPAGES
1693	help
1694	  MIPS Technologies R5000-series processors other than the Nevada.
1695
1696config CPU_R5500
1697	bool "R5500"
1698	depends on SYS_HAS_CPU_R5500
1699	select CPU_SUPPORTS_32BIT_KERNEL
1700	select CPU_SUPPORTS_64BIT_KERNEL
1701	select CPU_SUPPORTS_HUGEPAGES
1702	help
1703	  NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1704	  instruction set.
1705
1706config CPU_NEVADA
1707	bool "RM52xx"
1708	depends on SYS_HAS_CPU_NEVADA
1709	select CPU_SUPPORTS_32BIT_KERNEL
1710	select CPU_SUPPORTS_64BIT_KERNEL
1711	select CPU_SUPPORTS_HUGEPAGES
1712	help
1713	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1714
1715config CPU_R10000
1716	bool "R10000"
1717	depends on SYS_HAS_CPU_R10000
1718	select CPU_HAS_PREFETCH
1719	select CPU_SUPPORTS_32BIT_KERNEL
1720	select CPU_SUPPORTS_64BIT_KERNEL
1721	select CPU_SUPPORTS_HIGHMEM
1722	select CPU_SUPPORTS_HUGEPAGES
1723	help
1724	  MIPS Technologies R10000-series processors.
1725
1726config CPU_RM7000
1727	bool "RM7000"
1728	depends on SYS_HAS_CPU_RM7000
1729	select CPU_HAS_PREFETCH
1730	select CPU_SUPPORTS_32BIT_KERNEL
1731	select CPU_SUPPORTS_64BIT_KERNEL
1732	select CPU_SUPPORTS_HIGHMEM
1733	select CPU_SUPPORTS_HUGEPAGES
1734
1735config CPU_SB1
1736	bool "SB1"
1737	depends on SYS_HAS_CPU_SB1
1738	select CPU_SUPPORTS_32BIT_KERNEL
1739	select CPU_SUPPORTS_64BIT_KERNEL
1740	select CPU_SUPPORTS_HIGHMEM
1741	select CPU_SUPPORTS_HUGEPAGES
1742	select WEAK_ORDERING
1743
1744config CPU_CAVIUM_OCTEON
1745	bool "Cavium Octeon processor"
1746	depends on SYS_HAS_CPU_CAVIUM_OCTEON
1747	select CPU_HAS_PREFETCH
1748	select CPU_SUPPORTS_64BIT_KERNEL
1749	select WEAK_ORDERING
1750	select CPU_SUPPORTS_HIGHMEM
1751	select CPU_SUPPORTS_HUGEPAGES
1752	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1753	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1754	select MIPS_L1_CACHE_SHIFT_7
1755	select HAVE_KVM
1756	help
1757	  The Cavium Octeon processor is a highly integrated chip containing
1758	  many ethernet hardware widgets for networking tasks. The processor
1759	  can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1760	  Full details can be found at http://www.caviumnetworks.com.
1761
1762config CPU_BMIPS
1763	bool "Broadcom BMIPS"
1764	depends on SYS_HAS_CPU_BMIPS
1765	select CPU_MIPS32
1766	select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1767	select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1768	select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1769	select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1770	select CPU_SUPPORTS_32BIT_KERNEL
1771	select DMA_NONCOHERENT
1772	select IRQ_MIPS_CPU
1773	select SWAP_IO_SPACE
1774	select WEAK_ORDERING
1775	select CPU_SUPPORTS_HIGHMEM
1776	select CPU_HAS_PREFETCH
1777	select CPU_SUPPORTS_CPUFREQ
1778	select MIPS_EXTERNAL_TIMER
1779	help
1780	  Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1781
1782config CPU_XLR
1783	bool "Netlogic XLR SoC"
1784	depends on SYS_HAS_CPU_XLR
1785	select CPU_SUPPORTS_32BIT_KERNEL
1786	select CPU_SUPPORTS_64BIT_KERNEL
1787	select CPU_SUPPORTS_HIGHMEM
1788	select CPU_SUPPORTS_HUGEPAGES
1789	select WEAK_ORDERING
1790	select WEAK_REORDERING_BEYOND_LLSC
1791	help
1792	  Netlogic Microsystems XLR/XLS processors.
1793
1794config CPU_XLP
1795	bool "Netlogic XLP SoC"
1796	depends on SYS_HAS_CPU_XLP
1797	select CPU_SUPPORTS_32BIT_KERNEL
1798	select CPU_SUPPORTS_64BIT_KERNEL
1799	select CPU_SUPPORTS_HIGHMEM
1800	select WEAK_ORDERING
1801	select WEAK_REORDERING_BEYOND_LLSC
1802	select CPU_HAS_PREFETCH
1803	select CPU_MIPSR2
1804	select CPU_SUPPORTS_HUGEPAGES
1805	select MIPS_ASID_BITS_VARIABLE
1806	help
1807	  Netlogic Microsystems XLP processors.
1808endchoice
1809
1810config CPU_MIPS32_3_5_FEATURES
1811	bool "MIPS32 Release 3.5 Features"
1812	depends on SYS_HAS_CPU_MIPS32_R3_5
1813	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1814		   CPU_P5600
1815	help
1816	  Choose this option to build a kernel for release 2 or later of the
1817	  MIPS32 architecture including features from the 3.5 release such as
1818	  support for Enhanced Virtual Addressing (EVA).
1819
1820config CPU_MIPS32_3_5_EVA
1821	bool "Enhanced Virtual Addressing (EVA)"
1822	depends on CPU_MIPS32_3_5_FEATURES
1823	select EVA
1824	default y
1825	help
1826	  Choose this option if you want to enable the Enhanced Virtual
1827	  Addressing (EVA) on your MIPS32 core (such as proAptiv).
1828	  One of its primary benefits is an increase in the maximum size
1829	  of lowmem (up to 3GB). If unsure, say 'N' here.
1830
1831config CPU_MIPS32_R5_FEATURES
1832	bool "MIPS32 Release 5 Features"
1833	depends on SYS_HAS_CPU_MIPS32_R5
1834	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1835	help
1836	  Choose this option to build a kernel for release 2 or later of the
1837	  MIPS32 architecture including features from release 5 such as
1838	  support for Extended Physical Addressing (XPA).
1839
1840config CPU_MIPS32_R5_XPA
1841	bool "Extended Physical Addressing (XPA)"
1842	depends on CPU_MIPS32_R5_FEATURES
1843	depends on !EVA
1844	depends on !PAGE_SIZE_4KB
1845	depends on SYS_SUPPORTS_HIGHMEM
1846	select XPA
1847	select HIGHMEM
1848	select PHYS_ADDR_T_64BIT
1849	default n
1850	help
1851	  Choose this option if you want to enable the Extended Physical
1852	  Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1853	  benefit is to increase physical addressing equal to or greater
1854	  than 40 bits. Note that this has the side effect of turning on
1855	  64-bit addressing which in turn makes the PTEs 64-bit in size.
1856	  If unsure, say 'N' here.
1857
1858if CPU_LOONGSON2F
1859config CPU_NOP_WORKAROUNDS
1860	bool
1861
1862config CPU_JUMP_WORKAROUNDS
1863	bool
1864
1865config CPU_LOONGSON2F_WORKAROUNDS
1866	bool "Loongson 2F Workarounds"
1867	default y
1868	select CPU_NOP_WORKAROUNDS
1869	select CPU_JUMP_WORKAROUNDS
1870	help
1871	  Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1872	  require workarounds.  Without workarounds the system may hang
1873	  unexpectedly.  For more information please refer to the gas
1874	  -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1875
1876	  Loongson 2F03 and later have fixed these issues and no workarounds
1877	  are needed.  The workarounds have no significant side effect on them
1878	  but may decrease the performance of the system so this option should
1879	  be disabled unless the kernel is intended to be run on 2F01 or 2F02
1880	  systems.
1881
1882	  If unsure, please say Y.
1883endif # CPU_LOONGSON2F
1884
1885config SYS_SUPPORTS_ZBOOT
1886	bool
1887	select HAVE_KERNEL_GZIP
1888	select HAVE_KERNEL_BZIP2
1889	select HAVE_KERNEL_LZ4
1890	select HAVE_KERNEL_LZMA
1891	select HAVE_KERNEL_LZO
1892	select HAVE_KERNEL_XZ
1893	select HAVE_KERNEL_ZSTD
1894
1895config SYS_SUPPORTS_ZBOOT_UART16550
1896	bool
1897	select SYS_SUPPORTS_ZBOOT
1898
1899config SYS_SUPPORTS_ZBOOT_UART_PROM
1900	bool
1901	select SYS_SUPPORTS_ZBOOT
1902
1903config CPU_LOONGSON2EF
1904	bool
1905	select CPU_SUPPORTS_32BIT_KERNEL
1906	select CPU_SUPPORTS_64BIT_KERNEL
1907	select CPU_SUPPORTS_HIGHMEM
1908	select CPU_SUPPORTS_HUGEPAGES
1909	select ARCH_HAS_PHYS_TO_DMA
1910
1911config CPU_LOONGSON32
1912	bool
1913	select CPU_MIPS32
1914	select CPU_MIPSR2
1915	select CPU_HAS_PREFETCH
1916	select CPU_SUPPORTS_32BIT_KERNEL
1917	select CPU_SUPPORTS_HIGHMEM
1918	select CPU_SUPPORTS_CPUFREQ
1919
1920config CPU_BMIPS32_3300
1921	select SMP_UP if SMP
1922	bool
1923
1924config CPU_BMIPS4350
1925	bool
1926	select SYS_SUPPORTS_SMP
1927	select SYS_SUPPORTS_HOTPLUG_CPU
1928
1929config CPU_BMIPS4380
1930	bool
1931	select MIPS_L1_CACHE_SHIFT_6
1932	select SYS_SUPPORTS_SMP
1933	select SYS_SUPPORTS_HOTPLUG_CPU
1934	select CPU_HAS_RIXI
1935
1936config CPU_BMIPS5000
1937	bool
1938	select MIPS_CPU_SCACHE
1939	select MIPS_L1_CACHE_SHIFT_7
1940	select SYS_SUPPORTS_SMP
1941	select SYS_SUPPORTS_HOTPLUG_CPU
1942	select CPU_HAS_RIXI
1943
1944config SYS_HAS_CPU_LOONGSON64
1945	bool
1946	select CPU_SUPPORTS_CPUFREQ
1947	select CPU_HAS_RIXI
1948
1949config SYS_HAS_CPU_LOONGSON2E
1950	bool
1951
1952config SYS_HAS_CPU_LOONGSON2F
1953	bool
1954	select CPU_SUPPORTS_CPUFREQ
1955	select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1956
1957config SYS_HAS_CPU_LOONGSON1B
1958	bool
1959
1960config SYS_HAS_CPU_LOONGSON1C
1961	bool
1962
1963config SYS_HAS_CPU_MIPS32_R1
1964	bool
1965
1966config SYS_HAS_CPU_MIPS32_R2
1967	bool
1968
1969config SYS_HAS_CPU_MIPS32_R3_5
1970	bool
1971
1972config SYS_HAS_CPU_MIPS32_R5
1973	bool
1974	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1975
1976config SYS_HAS_CPU_MIPS32_R6
1977	bool
1978	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1979
1980config SYS_HAS_CPU_MIPS64_R1
1981	bool
1982
1983config SYS_HAS_CPU_MIPS64_R2
1984	bool
1985
1986config SYS_HAS_CPU_MIPS64_R5
1987	bool
1988	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1989
1990config SYS_HAS_CPU_MIPS64_R6
1991	bool
1992	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993
1994config SYS_HAS_CPU_P5600
1995	bool
1996	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1997
1998config SYS_HAS_CPU_R3000
1999	bool
2000
2001config SYS_HAS_CPU_TX39XX
2002	bool
2003
2004config SYS_HAS_CPU_VR41XX
2005	bool
2006
2007config SYS_HAS_CPU_R4X00
2008	bool
2009
2010config SYS_HAS_CPU_TX49XX
2011	bool
2012
2013config SYS_HAS_CPU_R5000
2014	bool
2015
2016config SYS_HAS_CPU_R5500
2017	bool
2018
2019config SYS_HAS_CPU_NEVADA
2020	bool
2021
2022config SYS_HAS_CPU_R10000
2023	bool
2024	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2025
2026config SYS_HAS_CPU_RM7000
2027	bool
2028
2029config SYS_HAS_CPU_SB1
2030	bool
2031
2032config SYS_HAS_CPU_CAVIUM_OCTEON
2033	bool
2034
2035config SYS_HAS_CPU_BMIPS
2036	bool
2037
2038config SYS_HAS_CPU_BMIPS32_3300
2039	bool
2040	select SYS_HAS_CPU_BMIPS
2041
2042config SYS_HAS_CPU_BMIPS4350
2043	bool
2044	select SYS_HAS_CPU_BMIPS
2045
2046config SYS_HAS_CPU_BMIPS4380
2047	bool
2048	select SYS_HAS_CPU_BMIPS
2049
2050config SYS_HAS_CPU_BMIPS5000
2051	bool
2052	select SYS_HAS_CPU_BMIPS
2053	select ARCH_HAS_SYNC_DMA_FOR_CPU
2054
2055config SYS_HAS_CPU_XLR
2056	bool
2057
2058config SYS_HAS_CPU_XLP
2059	bool
2060
2061#
2062# CPU may reorder R->R, R->W, W->R, W->W
2063# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2064#
2065config WEAK_ORDERING
2066	bool
2067
2068#
2069# CPU may reorder reads and writes beyond LL/SC
2070# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2071#
2072config WEAK_REORDERING_BEYOND_LLSC
2073	bool
2074endmenu
2075
2076#
2077# These two indicate any level of the MIPS32 and MIPS64 architecture
2078#
2079config CPU_MIPS32
2080	bool
2081	default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2082		     CPU_MIPS32_R6 || CPU_P5600
2083
2084config CPU_MIPS64
2085	bool
2086	default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2087		     CPU_MIPS64_R6
2088
2089#
2090# These indicate the revision of the architecture
2091#
2092config CPU_MIPSR1
2093	bool
2094	default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2095
2096config CPU_MIPSR2
2097	bool
2098	default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2099	select CPU_HAS_RIXI
2100	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2101	select MIPS_SPRAM
2102
2103config CPU_MIPSR5
2104	bool
2105	default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2106	select CPU_HAS_RIXI
2107	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2108	select MIPS_SPRAM
2109
2110config CPU_MIPSR6
2111	bool
2112	default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2113	select CPU_HAS_RIXI
2114	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2115	select HAVE_ARCH_BITREVERSE
2116	select MIPS_ASID_BITS_VARIABLE
2117	select MIPS_CRC_SUPPORT
2118	select MIPS_SPRAM
2119
2120config TARGET_ISA_REV
2121	int
2122	default 1 if CPU_MIPSR1
2123	default 2 if CPU_MIPSR2
2124	default 5 if CPU_MIPSR5
2125	default 6 if CPU_MIPSR6
2126	default 0
2127	help
2128	  Reflects the ISA revision being targeted by the kernel build. This
2129	  is effectively the Kconfig equivalent of MIPS_ISA_REV.
2130
2131config EVA
2132	bool
2133
2134config XPA
2135	bool
2136
2137config SYS_SUPPORTS_32BIT_KERNEL
2138	bool
2139config SYS_SUPPORTS_64BIT_KERNEL
2140	bool
2141config CPU_SUPPORTS_32BIT_KERNEL
2142	bool
2143config CPU_SUPPORTS_64BIT_KERNEL
2144	bool
2145config CPU_SUPPORTS_CPUFREQ
2146	bool
2147config CPU_SUPPORTS_ADDRWINCFG
2148	bool
2149config CPU_SUPPORTS_HUGEPAGES
2150	bool
2151	depends on !(32BIT && (PHYS_ADDR_T_64BIT || EVA))
2152config MIPS_PGD_C0_CONTEXT
2153	bool
2154	default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2155
2156#
2157# Set to y for ptrace access to watch registers.
2158#
2159config HARDWARE_WATCHPOINTS
2160	bool
2161	default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2162
2163menu "Kernel type"
2164
2165choice
2166	prompt "Kernel code model"
2167	help
2168	  You should only select this option if you have a workload that
2169	  actually benefits from 64-bit processing or if your machine has
2170	  large memory.  You will only be presented a single option in this
2171	  menu if your system does not support both 32-bit and 64-bit kernels.
2172
2173config 32BIT
2174	bool "32-bit kernel"
2175	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2176	select TRAD_SIGNALS
2177	help
2178	  Select this option if you want to build a 32-bit kernel.
2179
2180config 64BIT
2181	bool "64-bit kernel"
2182	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2183	help
2184	  Select this option if you want to build a 64-bit kernel.
2185
2186endchoice
2187
2188config KVM_GUEST
2189	bool "KVM Guest Kernel"
2190	depends on CPU_MIPS32_R2
2191	depends on BROKEN_ON_SMP
2192	help
2193	  Select this option if building a guest kernel for KVM (Trap & Emulate)
2194	  mode.
2195
2196config KVM_GUEST_TIMER_FREQ
2197	int "Count/Compare Timer Frequency (MHz)"
2198	depends on KVM_GUEST
2199	default 100
2200	help
2201	  Set this to non-zero if building a guest kernel for KVM to skip RTC
2202	  emulation when determining guest CPU Frequency. Instead, the guest's
2203	  timer frequency is specified directly.
2204
2205config MIPS_VA_BITS_48
2206	bool "48 bits virtual memory"
2207	depends on 64BIT
2208	help
2209	  Support a maximum at least 48 bits of application virtual
2210	  memory.  Default is 40 bits or less, depending on the CPU.
2211	  For page sizes 16k and above, this option results in a small
2212	  memory overhead for page tables.  For 4k page size, a fourth
2213	  level of page tables is added which imposes both a memory
2214	  overhead as well as slower TLB fault handling.
2215
2216	  If unsure, say N.
2217
2218choice
2219	prompt "Kernel page size"
2220	default PAGE_SIZE_4KB
2221
2222config PAGE_SIZE_4KB
2223	bool "4kB"
2224	depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2225	help
2226	  This option select the standard 4kB Linux page size.  On some
2227	  R3000-family processors this is the only available page size.  Using
2228	  4kB page size will minimize memory consumption and is therefore
2229	  recommended for low memory systems.
2230
2231config PAGE_SIZE_8KB
2232	bool "8kB"
2233	depends on CPU_CAVIUM_OCTEON
2234	depends on !MIPS_VA_BITS_48
2235	help
2236	  Using 8kB page size will result in higher performance kernel at
2237	  the price of higher memory consumption.  This option is available
2238	  only on cnMIPS processors.  Note that you will need a suitable Linux
2239	  distribution to support this.
2240
2241config PAGE_SIZE_16KB
2242	bool "16kB"
2243	depends on !CPU_R3000 && !CPU_TX39XX
2244	help
2245	  Using 16kB page size will result in higher performance kernel at
2246	  the price of higher memory consumption.  This option is available on
2247	  all non-R3000 family processors.  Note that you will need a suitable
2248	  Linux distribution to support this.
2249
2250config PAGE_SIZE_32KB
2251	bool "32kB"
2252	depends on CPU_CAVIUM_OCTEON
2253	depends on !MIPS_VA_BITS_48
2254	help
2255	  Using 32kB page size will result in higher performance kernel at
2256	  the price of higher memory consumption.  This option is available
2257	  only on cnMIPS cores.  Note that you will need a suitable Linux
2258	  distribution to support this.
2259
2260config PAGE_SIZE_64KB
2261	bool "64kB"
2262	depends on !CPU_R3000 && !CPU_TX39XX
2263	help
2264	  Using 64kB page size will result in higher performance kernel at
2265	  the price of higher memory consumption.  This option is available on
2266	  all non-R3000 family processor.  Not that at the time of this
2267	  writing this option is still high experimental.
2268
2269endchoice
2270
2271config FORCE_MAX_ZONEORDER
2272	int "Maximum zone order"
2273	range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2274	default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2275	range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2276	default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2277	range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2278	default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2279	range 0 64
2280	default "11"
2281	help
2282	  The kernel memory allocator divides physically contiguous memory
2283	  blocks into "zones", where each zone is a power of two number of
2284	  pages.  This option selects the largest power of two that the kernel
2285	  keeps in the memory allocator.  If you need to allocate very large
2286	  blocks of physically contiguous memory, then you may need to
2287	  increase this value.
2288
2289	  This config option is actually maximum order plus one. For example,
2290	  a value of 11 means that the largest free memory block is 2^10 pages.
2291
2292	  The page size is not necessarily 4KB.  Keep this in mind
2293	  when choosing a value for this option.
2294
2295config BOARD_SCACHE
2296	bool
2297
2298config IP22_CPU_SCACHE
2299	bool
2300	select BOARD_SCACHE
2301
2302#
2303# Support for a MIPS32 / MIPS64 style S-caches
2304#
2305config MIPS_CPU_SCACHE
2306	bool
2307	select BOARD_SCACHE
2308
2309config R5000_CPU_SCACHE
2310	bool
2311	select BOARD_SCACHE
2312
2313config RM7000_CPU_SCACHE
2314	bool
2315	select BOARD_SCACHE
2316
2317config SIBYTE_DMA_PAGEOPS
2318	bool "Use DMA to clear/copy pages"
2319	depends on CPU_SB1
2320	help
2321	  Instead of using the CPU to zero and copy pages, use a Data Mover
2322	  channel.  These DMA channels are otherwise unused by the standard
2323	  SiByte Linux port.  Seems to give a small performance benefit.
2324
2325config CPU_HAS_PREFETCH
2326	bool
2327
2328config CPU_GENERIC_DUMP_TLB
2329	bool
2330	default y if !(CPU_R3000 || CPU_TX39XX)
2331
2332config MIPS_FP_SUPPORT
2333	bool "Floating Point support" if EXPERT
2334	default y
2335	help
2336	  Select y to include support for floating point in the kernel
2337	  including initialization of FPU hardware, FP context save & restore
2338	  and emulation of an FPU where necessary. Without this support any
2339	  userland program attempting to use floating point instructions will
2340	  receive a SIGILL.
2341
2342	  If you know that your userland will not attempt to use floating point
2343	  instructions then you can say n here to shrink the kernel a little.
2344
2345	  If unsure, say y.
2346
2347config CPU_R2300_FPU
2348	bool
2349	depends on MIPS_FP_SUPPORT
2350	default y if CPU_R3000 || CPU_TX39XX
2351
2352config CPU_R3K_TLB
2353	bool
2354
2355config CPU_R4K_FPU
2356	bool
2357	depends on MIPS_FP_SUPPORT
2358	default y if !CPU_R2300_FPU
2359
2360config CPU_R4K_CACHE_TLB
2361	bool
2362	default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2363
2364config MIPS_MT_SMP
2365	bool "MIPS MT SMP support (1 TC on each available VPE)"
2366	default y
2367	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2368	select CPU_MIPSR2_IRQ_VI
2369	select CPU_MIPSR2_IRQ_EI
2370	select SYNC_R4K
2371	select MIPS_MT
2372	select SMP
2373	select SMP_UP
2374	select SYS_SUPPORTS_SMP
2375	select SYS_SUPPORTS_SCHED_SMT
2376	select MIPS_PERF_SHARED_TC_COUNTERS
2377	help
2378	  This is a kernel model which is known as SMVP. This is supported
2379	  on cores with the MT ASE and uses the available VPEs to implement
2380	  virtual processors which supports SMP. This is equivalent to the
2381	  Intel Hyperthreading feature. For further information go to
2382	  <http://www.imgtec.com/mips/mips-multithreading.asp>.
2383
2384config MIPS_MT
2385	bool
2386
2387config SCHED_SMT
2388	bool "SMT (multithreading) scheduler support"
2389	depends on SYS_SUPPORTS_SCHED_SMT
2390	default n
2391	help
2392	  SMT scheduler support improves the CPU scheduler's decision making
2393	  when dealing with MIPS MT enabled cores at a cost of slightly
2394	  increased overhead in some places. If unsure say N here.
2395
2396config SYS_SUPPORTS_SCHED_SMT
2397	bool
2398
2399config SYS_SUPPORTS_MULTITHREADING
2400	bool
2401
2402config MIPS_MT_FPAFF
2403	bool "Dynamic FPU affinity for FP-intensive threads"
2404	default y
2405	depends on MIPS_MT_SMP
2406
2407config MIPSR2_TO_R6_EMULATOR
2408	bool "MIPS R2-to-R6 emulator"
2409	depends on CPU_MIPSR6
2410	depends on MIPS_FP_SUPPORT
2411	default y
2412	help
2413	  Choose this option if you want to run non-R6 MIPS userland code.
2414	  Even if you say 'Y' here, the emulator will still be disabled by
2415	  default. You can enable it using the 'mipsr2emu' kernel option.
2416	  The only reason this is a build-time option is to save ~14K from the
2417	  final kernel image.
2418
2419config SYS_SUPPORTS_VPE_LOADER
2420	bool
2421	depends on SYS_SUPPORTS_MULTITHREADING
2422	help
2423	  Indicates that the platform supports the VPE loader, and provides
2424	  physical_memsize.
2425
2426config MIPS_VPE_LOADER
2427	bool "VPE loader support."
2428	depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2429	select CPU_MIPSR2_IRQ_VI
2430	select CPU_MIPSR2_IRQ_EI
2431	select MIPS_MT
2432	help
2433	  Includes a loader for loading an elf relocatable object
2434	  onto another VPE and running it.
2435
2436config MIPS_VPE_LOADER_CMP
2437	bool
2438	default "y"
2439	depends on MIPS_VPE_LOADER && MIPS_CMP
2440
2441config MIPS_VPE_LOADER_MT
2442	bool
2443	default "y"
2444	depends on MIPS_VPE_LOADER && !MIPS_CMP
2445
2446config MIPS_VPE_LOADER_TOM
2447	bool "Load VPE program into memory hidden from linux"
2448	depends on MIPS_VPE_LOADER
2449	default y
2450	help
2451	  The loader can use memory that is present but has been hidden from
2452	  Linux using the kernel command line option "mem=xxMB". It's up to
2453	  you to ensure the amount you put in the option and the space your
2454	  program requires is less or equal to the amount physically present.
2455
2456config MIPS_VPE_APSP_API
2457	bool "Enable support for AP/SP API (RTLX)"
2458	depends on MIPS_VPE_LOADER
2459
2460config MIPS_VPE_APSP_API_CMP
2461	bool
2462	default "y"
2463	depends on MIPS_VPE_APSP_API && MIPS_CMP
2464
2465config MIPS_VPE_APSP_API_MT
2466	bool
2467	default "y"
2468	depends on MIPS_VPE_APSP_API && !MIPS_CMP
2469
2470config MIPS_CMP
2471	bool "MIPS CMP framework support (DEPRECATED)"
2472	depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2473	select SMP
2474	select SYNC_R4K
2475	select SYS_SUPPORTS_SMP
2476	select WEAK_ORDERING
2477	default n
2478	help
2479	  Select this if you are using a bootloader which implements the "CMP
2480	  framework" protocol (ie. YAMON) and want your kernel to make use of
2481	  its ability to start secondary CPUs.
2482
2483	  Unless you have a specific need, you should use CONFIG_MIPS_CPS
2484	  instead of this.
2485
2486config MIPS_CPS
2487	bool "MIPS Coherent Processing System support"
2488	depends on SYS_SUPPORTS_MIPS_CPS
2489	select MIPS_CM
2490	select MIPS_CPS_PM if HOTPLUG_CPU
2491	select SMP
2492	select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2493	select SYS_SUPPORTS_HOTPLUG_CPU
2494	select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2495	select SYS_SUPPORTS_SMP
2496	select WEAK_ORDERING
2497	help
2498	  Select this if you wish to run an SMP kernel across multiple cores
2499	  within a MIPS Coherent Processing System. When this option is
2500	  enabled the kernel will probe for other cores and boot them with
2501	  no external assistance. It is safe to enable this when hardware
2502	  support is unavailable.
2503
2504config MIPS_CPS_PM
2505	depends on MIPS_CPS
2506	bool
2507
2508config MIPS_CM
2509	bool
2510	select MIPS_CPC
2511
2512config MIPS_CPC
2513	bool
2514
2515config SB1_PASS_2_WORKAROUNDS
2516	bool
2517	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2518	default y
2519
2520config SB1_PASS_2_1_WORKAROUNDS
2521	bool
2522	depends on CPU_SB1 && CPU_SB1_PASS_2
2523	default y
2524
2525choice
2526	prompt "SmartMIPS or microMIPS ASE support"
2527
2528config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2529	bool "None"
2530	help
2531	  Select this if you want neither microMIPS nor SmartMIPS support
2532
2533config CPU_HAS_SMARTMIPS
2534	depends on SYS_SUPPORTS_SMARTMIPS
2535	bool "SmartMIPS"
2536	help
2537	  SmartMIPS is a extension of the MIPS32 architecture aimed at
2538	  increased security at both hardware and software level for
2539	  smartcards.  Enabling this option will allow proper use of the
2540	  SmartMIPS instructions by Linux applications.  However a kernel with
2541	  this option will not work on a MIPS core without SmartMIPS core.  If
2542	  you don't know you probably don't have SmartMIPS and should say N
2543	  here.
2544
2545config CPU_MICROMIPS
2546	depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2547	bool "microMIPS"
2548	help
2549	  When this option is enabled the kernel will be built using the
2550	  microMIPS ISA
2551
2552endchoice
2553
2554config CPU_HAS_MSA
2555	bool "Support for the MIPS SIMD Architecture"
2556	depends on CPU_SUPPORTS_MSA
2557	depends on MIPS_FP_SUPPORT
2558	depends on 64BIT || MIPS_O32_FP64_SUPPORT
2559	help
2560	  MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2561	  and a set of SIMD instructions to operate on them. When this option
2562	  is enabled the kernel will support allocating & switching MSA
2563	  vector register contexts. If you know that your kernel will only be
2564	  running on CPUs which do not support MSA or that your userland will
2565	  not be making use of it then you may wish to say N here to reduce
2566	  the size & complexity of your kernel.
2567
2568	  If unsure, say Y.
2569
2570config CPU_HAS_WB
2571	bool
2572
2573config XKS01
2574	bool
2575
2576config CPU_HAS_DIEI
2577	depends on !CPU_DIEI_BROKEN
2578	bool
2579
2580config CPU_DIEI_BROKEN
2581	bool
2582
2583config CPU_HAS_RIXI
2584	bool
2585
2586config CPU_NO_LOAD_STORE_LR
2587	bool
2588	help
2589	  CPU lacks support for unaligned load and store instructions:
2590	  LWL, LWR, SWL, SWR (Load/store word left/right).
2591	  LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2592	  systems).
2593
2594#
2595# Vectored interrupt mode is an R2 feature
2596#
2597config CPU_MIPSR2_IRQ_VI
2598	bool
2599
2600#
2601# Extended interrupt mode is an R2 feature
2602#
2603config CPU_MIPSR2_IRQ_EI
2604	bool
2605
2606config CPU_HAS_SYNC
2607	bool
2608	depends on !CPU_R3000
2609	default y
2610
2611#
2612# CPU non-features
2613#
2614config CPU_DADDI_WORKAROUNDS
2615	bool
2616
2617config CPU_R4000_WORKAROUNDS
2618	bool
2619	select CPU_R4400_WORKAROUNDS
2620
2621config CPU_R4400_WORKAROUNDS
2622	bool
2623
2624config CPU_R4X00_BUGS64
2625	bool
2626	default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2627
2628config MIPS_ASID_SHIFT
2629	int
2630	default 6 if CPU_R3000 || CPU_TX39XX
2631	default 0
2632
2633config MIPS_ASID_BITS
2634	int
2635	default 0 if MIPS_ASID_BITS_VARIABLE
2636	default 6 if CPU_R3000 || CPU_TX39XX
2637	default 8
2638
2639config MIPS_ASID_BITS_VARIABLE
2640	bool
2641
2642config MIPS_CRC_SUPPORT
2643	bool
2644
2645# R4600 erratum.  Due to the lack of errata information the exact
2646# technical details aren't known.  I've experimentally found that disabling
2647# interrupts during indexed I-cache flushes seems to be sufficient to deal
2648# with the issue.
2649config WAR_R4600_V1_INDEX_ICACHEOP
2650	bool
2651
2652# Pleasures of the R4600 V1.x.  Cite from the IDT R4600 V1.7 errata:
2653#
2654#  18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
2655#      Hit_Invalidate_D and Create_Dirty_Excl_D should only be
2656#      executed if there is no other dcache activity. If the dcache is
2657#      accessed for another instruction immeidately preceding when these
2658#      cache instructions are executing, it is possible that the dcache
2659#      tag match outputs used by these cache instructions will be
2660#      incorrect. These cache instructions should be preceded by at least
2661#      four instructions that are not any kind of load or store
2662#      instruction.
2663#
2664#      This is not allowed:    lw
2665#                              nop
2666#                              nop
2667#                              nop
2668#                              cache       Hit_Writeback_Invalidate_D
2669#
2670#      This is allowed:        lw
2671#                              nop
2672#                              nop
2673#                              nop
2674#                              nop
2675#                              cache       Hit_Writeback_Invalidate_D
2676config WAR_R4600_V1_HIT_CACHEOP
2677	bool
2678
2679# Writeback and invalidate the primary cache dcache before DMA.
2680#
2681# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
2682# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only
2683# operate correctly if the internal data cache refill buffer is empty.  These
2684# CACHE instructions should be separated from any potential data cache miss
2685# by a load instruction to an uncached address to empty the response buffer."
2686# (Revision 2.0 device errata from IDT available on https://www.idt.com/
2687# in .pdf format.)
2688config WAR_R4600_V2_HIT_CACHEOP
2689	bool
2690
2691# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for
2692# the line which this instruction itself exists, the following
2693# operation is not guaranteed."
2694#
2695# Workaround: do two phase flushing for Index_Invalidate_I
2696config WAR_TX49XX_ICACHE_INDEX_INV
2697	bool
2698
2699# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
2700# opposes it being called that) where invalid instructions in the same
2701# I-cache line worth of instructions being fetched may case spurious
2702# exceptions.
2703config WAR_ICACHE_REFILLS
2704	bool
2705
2706# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that
2707# may cause ll / sc and lld / scd sequences to execute non-atomically.
2708config WAR_R10000_LLSC
2709	bool
2710
2711# 34K core erratum: "Problems Executing the TLBR Instruction"
2712config WAR_MIPS34K_MISSED_ITLB
2713	bool
2714
2715#
2716# - Highmem only makes sense for the 32-bit kernel.
2717# - The current highmem code will only work properly on physically indexed
2718#   caches such as R3000, SB1, R7000 or those that look like they're virtually
2719#   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
2720#   moment we protect the user and offer the highmem option only on machines
2721#   where it's known to be safe.  This will not offer highmem on a few systems
2722#   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2723#   indexed CPUs but we're playing safe.
2724# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2725#   know they might have memory configurations that could make use of highmem
2726#   support.
2727#
2728config HIGHMEM
2729	bool "High Memory Support"
2730	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2731
2732config CPU_SUPPORTS_HIGHMEM
2733	bool
2734
2735config SYS_SUPPORTS_HIGHMEM
2736	bool
2737
2738config SYS_SUPPORTS_SMARTMIPS
2739	bool
2740
2741config SYS_SUPPORTS_MICROMIPS
2742	bool
2743
2744config SYS_SUPPORTS_MIPS16
2745	bool
2746	help
2747	  This option must be set if a kernel might be executed on a MIPS16-
2748	  enabled CPU even if MIPS16 is not actually being used.  In other
2749	  words, it makes the kernel MIPS16-tolerant.
2750
2751config CPU_SUPPORTS_MSA
2752	bool
2753
2754config ARCH_FLATMEM_ENABLE
2755	def_bool y
2756	depends on !NUMA && !CPU_LOONGSON2EF
2757
2758config ARCH_SPARSEMEM_ENABLE
2759	bool
2760	select SPARSEMEM_STATIC if !SGI_IP27
2761
2762config NUMA
2763	bool "NUMA Support"
2764	depends on SYS_SUPPORTS_NUMA
2765	help
2766	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2767	  Access).  This option improves performance on systems with more
2768	  than two nodes; on two node systems it is generally better to
2769	  leave it disabled; on single node systems leave this option
2770	  disabled.
2771
2772config SYS_SUPPORTS_NUMA
2773	bool
2774
2775config HAVE_SETUP_PER_CPU_AREA
2776	def_bool y
2777	depends on NUMA
2778
2779config NEED_PER_CPU_EMBED_FIRST_CHUNK
2780	def_bool y
2781	depends on NUMA
2782
2783config RELOCATABLE
2784	bool "Relocatable kernel"
2785	depends on SYS_SUPPORTS_RELOCATABLE
2786	depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2787		   CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2788		   CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2789		   CPU_P5600 || CAVIUM_OCTEON_SOC
2790	help
2791	  This builds a kernel image that retains relocation information
2792	  so it can be loaded someplace besides the default 1MB.
2793	  The relocations make the kernel binary about 15% larger,
2794	  but are discarded at runtime
2795
2796config RELOCATION_TABLE_SIZE
2797	hex "Relocation table size"
2798	depends on RELOCATABLE
2799	range 0x0 0x01000000
2800	default "0x00100000"
2801	help
2802	  A table of relocation data will be appended to the kernel binary
2803	  and parsed at boot to fix up the relocated kernel.
2804
2805	  This option allows the amount of space reserved for the table to be
2806	  adjusted, although the default of 1Mb should be ok in most cases.
2807
2808	  The build will fail and a valid size suggested if this is too small.
2809
2810	  If unsure, leave at the default value.
2811
2812config RANDOMIZE_BASE
2813	bool "Randomize the address of the kernel image"
2814	depends on RELOCATABLE
2815	help
2816	  Randomizes the physical and virtual address at which the
2817	  kernel image is loaded, as a security feature that
2818	  deters exploit attempts relying on knowledge of the location
2819	  of kernel internals.
2820
2821	  Entropy is generated using any coprocessor 0 registers available.
2822
2823	  The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2824
2825	  If unsure, say N.
2826
2827config RANDOMIZE_BASE_MAX_OFFSET
2828	hex "Maximum kASLR offset" if EXPERT
2829	depends on RANDOMIZE_BASE
2830	range 0x0 0x40000000 if EVA || 64BIT
2831	range 0x0 0x08000000
2832	default "0x01000000"
2833	help
2834	  When kASLR is active, this provides the maximum offset that will
2835	  be applied to the kernel image. It should be set according to the
2836	  amount of physical RAM available in the target system minus
2837	  PHYSICAL_START and must be a power of 2.
2838
2839	  This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2840	  EVA or 64-bit. The default is 16Mb.
2841
2842config NODES_SHIFT
2843	int
2844	default "6"
2845	depends on NEED_MULTIPLE_NODES
2846
2847config HW_PERF_EVENTS
2848	bool "Enable hardware performance counter support for perf events"
2849	depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2850	default y
2851	help
2852	  Enable hardware performance counter support for perf events. If
2853	  disabled, perf events will use software events only.
2854
2855config DMI
2856	bool "Enable DMI scanning"
2857	depends on MACH_LOONGSON64
2858	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2859	default y
2860	help
2861	  Enabled scanning of DMI to identify machine quirks. Say Y
2862	  here unless you have verified that your setup is not
2863	  affected by entries in the DMI blacklist. Required by PNP
2864	  BIOS code.
2865
2866config SMP
2867	bool "Multi-Processing support"
2868	depends on SYS_SUPPORTS_SMP
2869	help
2870	  This enables support for systems with more than one CPU. If you have
2871	  a system with only one CPU, say N. If you have a system with more
2872	  than one CPU, say Y.
2873
2874	  If you say N here, the kernel will run on uni- and multiprocessor
2875	  machines, but will use only one CPU of a multiprocessor machine. If
2876	  you say Y here, the kernel will run on many, but not all,
2877	  uniprocessor machines. On a uniprocessor machine, the kernel
2878	  will run faster if you say N here.
2879
2880	  People using multiprocessor machines who say Y here should also say
2881	  Y to "Enhanced Real Time Clock Support", below.
2882
2883	  See also the SMP-HOWTO available at
2884	  <https://www.tldp.org/docs.html#howto>.
2885
2886	  If you don't know what to do here, say N.
2887
2888config HOTPLUG_CPU
2889	bool "Support for hot-pluggable CPUs"
2890	depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2891	help
2892	  Say Y here to allow turning CPUs off and on. CPUs can be
2893	  controlled through /sys/devices/system/cpu.
2894	  (Note: power management support will enable this option
2895	    automatically on SMP systems. )
2896	  Say N if you want to disable CPU hotplug.
2897
2898config SMP_UP
2899	bool
2900
2901config SYS_SUPPORTS_MIPS_CMP
2902	bool
2903
2904config SYS_SUPPORTS_MIPS_CPS
2905	bool
2906
2907config SYS_SUPPORTS_SMP
2908	bool
2909
2910config NR_CPUS_DEFAULT_4
2911	bool
2912
2913config NR_CPUS_DEFAULT_8
2914	bool
2915
2916config NR_CPUS_DEFAULT_16
2917	bool
2918
2919config NR_CPUS_DEFAULT_32
2920	bool
2921
2922config NR_CPUS_DEFAULT_64
2923	bool
2924
2925config NR_CPUS
2926	int "Maximum number of CPUs (2-256)"
2927	range 2 256
2928	depends on SMP
2929	default "4" if NR_CPUS_DEFAULT_4
2930	default "8" if NR_CPUS_DEFAULT_8
2931	default "16" if NR_CPUS_DEFAULT_16
2932	default "32" if NR_CPUS_DEFAULT_32
2933	default "64" if NR_CPUS_DEFAULT_64
2934	help
2935	  This allows you to specify the maximum number of CPUs which this
2936	  kernel will support.  The maximum supported value is 32 for 32-bit
2937	  kernel and 64 for 64-bit kernels; the minimum value which makes
2938	  sense is 1 for Qemu (useful only for kernel debugging purposes)
2939	  and 2 for all others.
2940
2941	  This is purely to save memory - each supported CPU adds
2942	  approximately eight kilobytes to the kernel image.  For best
2943	  performance should round up your number of processors to the next
2944	  power of two.
2945
2946config MIPS_PERF_SHARED_TC_COUNTERS
2947	bool
2948
2949config MIPS_NR_CPU_NR_MAP_1024
2950	bool
2951
2952config MIPS_NR_CPU_NR_MAP
2953	int
2954	depends on SMP
2955	default 1024 if MIPS_NR_CPU_NR_MAP_1024
2956	default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2957
2958#
2959# Timer Interrupt Frequency Configuration
2960#
2961
2962choice
2963	prompt "Timer frequency"
2964	default HZ_250
2965	help
2966	  Allows the configuration of the timer frequency.
2967
2968	config HZ_24
2969		bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2970
2971	config HZ_48
2972		bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2973
2974	config HZ_100
2975		bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2976
2977	config HZ_128
2978		bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2979
2980	config HZ_250
2981		bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2982
2983	config HZ_256
2984		bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2985
2986	config HZ_1000
2987		bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2988
2989	config HZ_1024
2990		bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2991
2992endchoice
2993
2994config SYS_SUPPORTS_24HZ
2995	bool
2996
2997config SYS_SUPPORTS_48HZ
2998	bool
2999
3000config SYS_SUPPORTS_100HZ
3001	bool
3002
3003config SYS_SUPPORTS_128HZ
3004	bool
3005
3006config SYS_SUPPORTS_250HZ
3007	bool
3008
3009config SYS_SUPPORTS_256HZ
3010	bool
3011
3012config SYS_SUPPORTS_1000HZ
3013	bool
3014
3015config SYS_SUPPORTS_1024HZ
3016	bool
3017
3018config SYS_SUPPORTS_ARBIT_HZ
3019	bool
3020	default y if !SYS_SUPPORTS_24HZ && \
3021		     !SYS_SUPPORTS_48HZ && \
3022		     !SYS_SUPPORTS_100HZ && \
3023		     !SYS_SUPPORTS_128HZ && \
3024		     !SYS_SUPPORTS_250HZ && \
3025		     !SYS_SUPPORTS_256HZ && \
3026		     !SYS_SUPPORTS_1000HZ && \
3027		     !SYS_SUPPORTS_1024HZ
3028
3029config HZ
3030	int
3031	default 24 if HZ_24
3032	default 48 if HZ_48
3033	default 100 if HZ_100
3034	default 128 if HZ_128
3035	default 250 if HZ_250
3036	default 256 if HZ_256
3037	default 1000 if HZ_1000
3038	default 1024 if HZ_1024
3039
3040config SCHED_HRTICK
3041	def_bool HIGH_RES_TIMERS
3042
3043config KEXEC
3044	bool "Kexec system call"
3045	select KEXEC_CORE
3046	help
3047	  kexec is a system call that implements the ability to shutdown your
3048	  current kernel, and to start another kernel.  It is like a reboot
3049	  but it is independent of the system firmware.   And like a reboot
3050	  you can start any kernel with it, not just Linux.
3051
3052	  The name comes from the similarity to the exec system call.
3053
3054	  It is an ongoing process to be certain the hardware in a machine
3055	  is properly shutdown, so do not be surprised if this code does not
3056	  initially work for you.  As of this writing the exact hardware
3057	  interface is strongly in flux, so no good recommendation can be
3058	  made.
3059
3060config CRASH_DUMP
3061	bool "Kernel crash dumps"
3062	help
3063	  Generate crash dump after being started by kexec.
3064	  This should be normally only set in special crash dump kernels
3065	  which are loaded in the main kernel with kexec-tools into
3066	  a specially reserved region and then later executed after
3067	  a crash by kdump/kexec. The crash dump kernel must be compiled
3068	  to a memory address not used by the main kernel or firmware using
3069	  PHYSICAL_START.
3070
3071config PHYSICAL_START
3072	hex "Physical address where the kernel is loaded"
3073	default "0xffffffff84000000"
3074	depends on CRASH_DUMP
3075	help
3076	  This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3077	  If you plan to use kernel for capturing the crash dump change
3078	  this value to start of the reserved region (the "X" value as
3079	  specified in the "crashkernel=YM@XM" command line boot parameter
3080	  passed to the panic-ed kernel).
3081
3082config MIPS_O32_FP64_SUPPORT
3083	bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3084	depends on 32BIT || MIPS32_O32
3085	help
3086	  When this is enabled, the kernel will support use of 64-bit floating
3087	  point registers with binaries using the O32 ABI along with the
3088	  EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3089	  32-bit MIPS systems this support is at the cost of increasing the
3090	  size and complexity of the compiled FPU emulator. Thus if you are
3091	  running a MIPS32 system and know that none of your userland binaries
3092	  will require 64-bit floating point, you may wish to reduce the size
3093	  of your kernel & potentially improve FP emulation performance by
3094	  saying N here.
3095
3096	  Although binutils currently supports use of this flag the details
3097	  concerning its effect upon the O32 ABI in userland are still being
3098	  worked on. In order to avoid userland becoming dependant upon current
3099	  behaviour before the details have been finalised, this option should
3100	  be considered experimental and only enabled by those working upon
3101	  said details.
3102
3103	  If unsure, say N.
3104
3105config USE_OF
3106	bool
3107	select OF
3108	select OF_EARLY_FLATTREE
3109	select IRQ_DOMAIN
3110
3111config UHI_BOOT
3112	bool
3113
3114config BUILTIN_DTB
3115	bool
3116
3117choice
3118	prompt "Kernel appended dtb support" if USE_OF
3119	default MIPS_NO_APPENDED_DTB
3120
3121	config MIPS_NO_APPENDED_DTB
3122		bool "None"
3123		help
3124		  Do not enable appended dtb support.
3125
3126	config MIPS_ELF_APPENDED_DTB
3127		bool "vmlinux"
3128		help
3129		  With this option, the boot code will look for a device tree binary
3130		  DTB) included in the vmlinux ELF section .appended_dtb. By default
3131		  it is empty and the DTB can be appended using binutils command
3132		  objcopy:
3133
3134		    objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3135
3136		  This is meant as a backward compatiblity convenience for those
3137		  systems with a bootloader that can't be upgraded to accommodate
3138		  the documented boot protocol using a device tree.
3139
3140	config MIPS_RAW_APPENDED_DTB
3141		bool "vmlinux.bin or vmlinuz.bin"
3142		help
3143		  With this option, the boot code will look for a device tree binary
3144		  DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3145		  (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3146
3147		  This is meant as a backward compatibility convenience for those
3148		  systems with a bootloader that can't be upgraded to accommodate
3149		  the documented boot protocol using a device tree.
3150
3151		  Beware that there is very little in terms of protection against
3152		  this option being confused by leftover garbage in memory that might
3153		  look like a DTB header after a reboot if no actual DTB is appended
3154		  to vmlinux.bin.  Do not leave this option active in a production kernel
3155		  if you don't intend to always append a DTB.
3156endchoice
3157
3158choice
3159	prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3160	default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3161					 !MACH_LOONGSON64 && !MIPS_MALTA && \
3162					 !CAVIUM_OCTEON_SOC
3163	default MIPS_CMDLINE_FROM_BOOTLOADER
3164
3165	config MIPS_CMDLINE_FROM_DTB
3166		depends on USE_OF
3167		bool "Dtb kernel arguments if available"
3168
3169	config MIPS_CMDLINE_DTB_EXTEND
3170		depends on USE_OF
3171		bool "Extend dtb kernel arguments with bootloader arguments"
3172
3173	config MIPS_CMDLINE_FROM_BOOTLOADER
3174		bool "Bootloader kernel arguments if available"
3175
3176	config MIPS_CMDLINE_BUILTIN_EXTEND
3177		depends on CMDLINE_BOOL
3178		bool "Extend builtin kernel arguments with bootloader arguments"
3179endchoice
3180
3181endmenu
3182
3183config LOCKDEP_SUPPORT
3184	bool
3185	default y
3186
3187config STACKTRACE_SUPPORT
3188	bool
3189	default y
3190
3191config PGTABLE_LEVELS
3192	int
3193	default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3194	default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
3195	default 2
3196
3197config MIPS_AUTO_PFN_OFFSET
3198	bool
3199
3200menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3201
3202config PCI_DRIVERS_GENERIC
3203	select PCI_DOMAINS_GENERIC if PCI
3204	bool
3205
3206config PCI_DRIVERS_LEGACY
3207	def_bool !PCI_DRIVERS_GENERIC
3208	select NO_GENERIC_PCI_IOPORT_MAP
3209	select PCI_DOMAINS if PCI
3210
3211#
3212# ISA support is now enabled via select.  Too many systems still have the one
3213# or other ISA chip on the board that users don't know about so don't expect
3214# users to choose the right thing ...
3215#
3216config ISA
3217	bool
3218
3219config TC
3220	bool "TURBOchannel support"
3221	depends on MACH_DECSTATION
3222	help
3223	  TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3224	  processors.  TURBOchannel programming specifications are available
3225	  at:
3226	  <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3227	  and:
3228	  <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3229	  Linux driver support status is documented at:
3230	  <http://www.linux-mips.org/wiki/DECstation>
3231
3232config MMU
3233	bool
3234	default y
3235
3236config ARCH_MMAP_RND_BITS_MIN
3237	default 12 if 64BIT
3238	default 8
3239
3240config ARCH_MMAP_RND_BITS_MAX
3241	default 18 if 64BIT
3242	default 15
3243
3244config ARCH_MMAP_RND_COMPAT_BITS_MIN
3245	default 8
3246
3247config ARCH_MMAP_RND_COMPAT_BITS_MAX
3248	default 15
3249
3250config I8253
3251	bool
3252	select CLKSRC_I8253
3253	select CLKEVT_I8253
3254	select MIPS_EXTERNAL_TIMER
3255
3256config ZONE_DMA
3257	bool
3258
3259config ZONE_DMA32
3260	bool
3261
3262endmenu
3263
3264config TRAD_SIGNALS
3265	bool
3266
3267config MIPS32_COMPAT
3268	bool
3269
3270config COMPAT
3271	bool
3272
3273config SYSVIPC_COMPAT
3274	bool
3275
3276config MIPS32_O32
3277	bool "Kernel support for o32 binaries"
3278	depends on 64BIT
3279	select ARCH_WANT_OLD_COMPAT_IPC
3280	select COMPAT
3281	select MIPS32_COMPAT
3282	select SYSVIPC_COMPAT if SYSVIPC
3283	help
3284	  Select this option if you want to run o32 binaries.  These are pure
3285	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
3286	  existing binaries are in this format.
3287
3288	  If unsure, say Y.
3289
3290config MIPS32_N32
3291	bool "Kernel support for n32 binaries"
3292	depends on 64BIT
3293	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3294	select COMPAT
3295	select MIPS32_COMPAT
3296	select SYSVIPC_COMPAT if SYSVIPC
3297	help
3298	  Select this option if you want to run n32 binaries.  These are
3299	  64-bit binaries using 32-bit quantities for addressing and certain
3300	  data that would normally be 64-bit.  They are used in special
3301	  cases.
3302
3303	  If unsure, say N.
3304
3305config BINFMT_ELF32
3306	bool
3307	default y if MIPS32_O32 || MIPS32_N32
3308	select ELFCORE
3309
3310menu "Power management options"
3311
3312config ARCH_HIBERNATION_POSSIBLE
3313	def_bool y
3314	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3315
3316config ARCH_SUSPEND_POSSIBLE
3317	def_bool y
3318	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3319
3320source "kernel/power/Kconfig"
3321
3322endmenu
3323
3324config MIPS_EXTERNAL_TIMER
3325	bool
3326
3327menu "CPU Power Management"
3328
3329if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3330source "drivers/cpufreq/Kconfig"
3331endif
3332
3333source "drivers/cpuidle/Kconfig"
3334
3335endmenu
3336
3337source "drivers/firmware/Kconfig"
3338
3339source "arch/mips/kvm/Kconfig"
3340
3341source "arch/mips/vdso/Kconfig"
3342