xref: /openbmc/linux/arch/mips/Kconfig (revision d1492bbd)
1# SPDX-License-Identifier: GPL-2.0
2config MIPS
3	bool
4	default y
5	select ARCH_32BIT_OFF_T if !64BIT
6	select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7	select ARCH_HAS_FORTIFY_SOURCE
8	select ARCH_HAS_KCOV
9	select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
10	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11	select ARCH_HAS_UBSAN_SANITIZE_ALL
12	select ARCH_SUPPORTS_UPROBES
13	select ARCH_USE_BUILTIN_BSWAP
14	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15	select ARCH_USE_QUEUED_RWLOCKS
16	select ARCH_USE_QUEUED_SPINLOCKS
17	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
18	select ARCH_WANT_IPC_PARSE_VERSION
19	select BUILDTIME_TABLE_SORT
20	select CLONE_BACKWARDS
21	select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
22	select CPU_PM if CPU_IDLE
23	select GENERIC_ATOMIC64 if !64BIT
24	select GENERIC_CLOCKEVENTS
25	select GENERIC_CMOS_UPDATE
26	select GENERIC_CPU_AUTOPROBE
27	select GENERIC_GETTIMEOFDAY
28	select GENERIC_IOMAP
29	select GENERIC_IRQ_PROBE
30	select GENERIC_IRQ_SHOW
31	select GENERIC_ISA_DMA if EISA
32	select GENERIC_LIB_ASHLDI3
33	select GENERIC_LIB_ASHRDI3
34	select GENERIC_LIB_CMPDI2
35	select GENERIC_LIB_LSHRDI3
36	select GENERIC_LIB_UCMPDI2
37	select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
38	select GENERIC_SMP_IDLE_THREAD
39	select GENERIC_TIME_VSYSCALL
40	select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
41	select HANDLE_DOMAIN_IRQ
42	select HAVE_ARCH_COMPILER_H
43	select HAVE_ARCH_JUMP_LABEL
44	select HAVE_ARCH_KGDB
45	select HAVE_ARCH_MMAP_RND_BITS if MMU
46	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
47	select HAVE_ARCH_SECCOMP_FILTER
48	select HAVE_ARCH_TRACEHOOK
49	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
50	select HAVE_ASM_MODVERSIONS
51	select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
52	select HAVE_CONTEXT_TRACKING
53	select HAVE_TIF_NOHZ
54	select HAVE_COPY_THREAD_TLS
55	select HAVE_C_RECORDMCOUNT
56	select HAVE_DEBUG_KMEMLEAK
57	select HAVE_DEBUG_STACKOVERFLOW
58	select HAVE_DMA_CONTIGUOUS
59	select HAVE_DYNAMIC_FTRACE
60	select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
61	select HAVE_EXIT_THREAD
62	select HAVE_FAST_GUP
63	select HAVE_FTRACE_MCOUNT_RECORD
64	select HAVE_FUNCTION_GRAPH_TRACER
65	select HAVE_FUNCTION_TRACER
66	select HAVE_GCC_PLUGINS
67	select HAVE_GENERIC_VDSO
68	select HAVE_IDE
69	select HAVE_IOREMAP_PROT
70	select HAVE_IRQ_EXIT_ON_IRQ_STACK
71	select HAVE_IRQ_TIME_ACCOUNTING
72	select HAVE_KPROBES
73	select HAVE_KRETPROBES
74	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
75	select HAVE_MOD_ARCH_SPECIFIC
76	select HAVE_NMI
77	select HAVE_OPROFILE
78	select HAVE_PERF_EVENTS
79	select HAVE_REGS_AND_STACK_ACCESS_API
80	select HAVE_RSEQ
81	select HAVE_SPARSE_SYSCALL_NR
82	select HAVE_STACKPROTECTOR
83	select HAVE_SYSCALL_TRACEPOINTS
84	select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
85	select IRQ_FORCED_THREADING
86	select ISA if EISA
87	select MODULES_USE_ELF_REL if MODULES
88	select MODULES_USE_ELF_RELA if MODULES && 64BIT
89	select PERF_USE_VMALLOC
90	select RTC_LIB
91	select SYSCTL_EXCEPTION_TRACE
92	select VIRT_TO_BUS
93
94config MIPS_FIXUP_BIGPHYS_ADDR
95	bool
96
97menu "Machine selection"
98
99choice
100	prompt "System type"
101	default MIPS_GENERIC
102
103config MIPS_GENERIC
104	bool "Generic board-agnostic MIPS kernel"
105	select BOOT_RAW
106	select BUILTIN_DTB
107	select CEVT_R4K
108	select CLKSRC_MIPS_GIC
109	select COMMON_CLK
110	select CPU_MIPSR2_IRQ_EI
111	select CPU_MIPSR2_IRQ_VI
112	select CSRC_R4K
113	select DMA_PERDEV_COHERENT
114	select HAVE_PCI
115	select IRQ_MIPS_CPU
116	select MIPS_AUTO_PFN_OFFSET
117	select MIPS_CPU_SCACHE
118	select MIPS_GIC
119	select MIPS_L1_CACHE_SHIFT_7
120	select NO_EXCEPT_FILL
121	select PCI_DRIVERS_GENERIC
122	select SMP_UP if SMP
123	select SWAP_IO_SPACE
124	select SYS_HAS_CPU_MIPS32_R1
125	select SYS_HAS_CPU_MIPS32_R2
126	select SYS_HAS_CPU_MIPS32_R6
127	select SYS_HAS_CPU_MIPS64_R1
128	select SYS_HAS_CPU_MIPS64_R2
129	select SYS_HAS_CPU_MIPS64_R6
130	select SYS_SUPPORTS_32BIT_KERNEL
131	select SYS_SUPPORTS_64BIT_KERNEL
132	select SYS_SUPPORTS_BIG_ENDIAN
133	select SYS_SUPPORTS_HIGHMEM
134	select SYS_SUPPORTS_LITTLE_ENDIAN
135	select SYS_SUPPORTS_MICROMIPS
136	select SYS_SUPPORTS_MIPS16
137	select SYS_SUPPORTS_MIPS_CPS
138	select SYS_SUPPORTS_MULTITHREADING
139	select SYS_SUPPORTS_RELOCATABLE
140	select SYS_SUPPORTS_SMARTMIPS
141	select UHI_BOOT
142	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
143	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
144	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
145	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
146	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
147	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
148	select USE_OF
149	help
150	  Select this to build a kernel which aims to support multiple boards,
151	  generally using a flattened device tree passed from the bootloader
152	  using the boot protocol defined in the UHI (Unified Hosting
153	  Interface) specification.
154
155config MIPS_ALCHEMY
156	bool "Alchemy processor based machines"
157	select PHYS_ADDR_T_64BIT
158	select CEVT_R4K
159	select CSRC_R4K
160	select IRQ_MIPS_CPU
161	select DMA_MAYBE_COHERENT	# Au1000,1500,1100 aren't, rest is
162	select MIPS_FIXUP_BIGPHYS_ADDR if PCI
163	select SYS_HAS_CPU_MIPS32_R1
164	select SYS_SUPPORTS_32BIT_KERNEL
165	select SYS_SUPPORTS_APM_EMULATION
166	select GPIOLIB
167	select SYS_SUPPORTS_ZBOOT
168	select COMMON_CLK
169
170config AR7
171	bool "Texas Instruments AR7"
172	select BOOT_ELF32
173	select DMA_NONCOHERENT
174	select CEVT_R4K
175	select CSRC_R4K
176	select IRQ_MIPS_CPU
177	select NO_EXCEPT_FILL
178	select SWAP_IO_SPACE
179	select SYS_HAS_CPU_MIPS32_R1
180	select SYS_HAS_EARLY_PRINTK
181	select SYS_SUPPORTS_32BIT_KERNEL
182	select SYS_SUPPORTS_LITTLE_ENDIAN
183	select SYS_SUPPORTS_MIPS16
184	select SYS_SUPPORTS_ZBOOT_UART16550
185	select GPIOLIB
186	select VLYNQ
187	select HAVE_LEGACY_CLK
188	help
189	  Support for the Texas Instruments AR7 System-on-a-Chip
190	  family: TNETD7100, 7200 and 7300.
191
192config ATH25
193	bool "Atheros AR231x/AR531x SoC support"
194	select CEVT_R4K
195	select CSRC_R4K
196	select DMA_NONCOHERENT
197	select IRQ_MIPS_CPU
198	select IRQ_DOMAIN
199	select SYS_HAS_CPU_MIPS32_R1
200	select SYS_SUPPORTS_BIG_ENDIAN
201	select SYS_SUPPORTS_32BIT_KERNEL
202	select SYS_HAS_EARLY_PRINTK
203	help
204	  Support for Atheros AR231x and Atheros AR531x based boards
205
206config ATH79
207	bool "Atheros AR71XX/AR724X/AR913X based boards"
208	select ARCH_HAS_RESET_CONTROLLER
209	select BOOT_RAW
210	select CEVT_R4K
211	select CSRC_R4K
212	select DMA_NONCOHERENT
213	select GPIOLIB
214	select PINCTRL
215	select COMMON_CLK
216	select IRQ_MIPS_CPU
217	select SYS_HAS_CPU_MIPS32_R2
218	select SYS_HAS_EARLY_PRINTK
219	select SYS_SUPPORTS_32BIT_KERNEL
220	select SYS_SUPPORTS_BIG_ENDIAN
221	select SYS_SUPPORTS_MIPS16
222	select SYS_SUPPORTS_ZBOOT_UART_PROM
223	select USE_OF
224	select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
225	help
226	  Support for the Atheros AR71XX/AR724X/AR913X SoCs.
227
228config BMIPS_GENERIC
229	bool "Broadcom Generic BMIPS kernel"
230	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
231	select ARCH_HAS_PHYS_TO_DMA
232	select BOOT_RAW
233	select NO_EXCEPT_FILL
234	select USE_OF
235	select CEVT_R4K
236	select CSRC_R4K
237	select SYNC_R4K
238	select COMMON_CLK
239	select BCM6345_L1_IRQ
240	select BCM7038_L1_IRQ
241	select BCM7120_L2_IRQ
242	select BRCMSTB_L2_IRQ
243	select IRQ_MIPS_CPU
244	select DMA_NONCOHERENT
245	select SYS_SUPPORTS_32BIT_KERNEL
246	select SYS_SUPPORTS_LITTLE_ENDIAN
247	select SYS_SUPPORTS_BIG_ENDIAN
248	select SYS_SUPPORTS_HIGHMEM
249	select SYS_HAS_CPU_BMIPS32_3300
250	select SYS_HAS_CPU_BMIPS4350
251	select SYS_HAS_CPU_BMIPS4380
252	select SYS_HAS_CPU_BMIPS5000
253	select SWAP_IO_SPACE
254	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
255	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
256	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
257	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
258	select HARDIRQS_SW_RESEND
259	help
260	  Build a generic DT-based kernel image that boots on select
261	  BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
262	  box chips.  Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
263	  must be set appropriately for your board.
264
265config BCM47XX
266	bool "Broadcom BCM47XX based boards"
267	select BOOT_RAW
268	select CEVT_R4K
269	select CSRC_R4K
270	select DMA_NONCOHERENT
271	select HAVE_PCI
272	select IRQ_MIPS_CPU
273	select SYS_HAS_CPU_MIPS32_R1
274	select NO_EXCEPT_FILL
275	select SYS_SUPPORTS_32BIT_KERNEL
276	select SYS_SUPPORTS_LITTLE_ENDIAN
277	select SYS_SUPPORTS_MIPS16
278	select SYS_SUPPORTS_ZBOOT
279	select SYS_HAS_EARLY_PRINTK
280	select USE_GENERIC_EARLY_PRINTK_8250
281	select GPIOLIB
282	select LEDS_GPIO_REGISTER
283	select BCM47XX_NVRAM
284	select BCM47XX_SPROM
285	select BCM47XX_SSB if !BCM47XX_BCMA
286	help
287	  Support for BCM47XX based boards
288
289config BCM63XX
290	bool "Broadcom BCM63XX based boards"
291	select BOOT_RAW
292	select CEVT_R4K
293	select CSRC_R4K
294	select SYNC_R4K
295	select DMA_NONCOHERENT
296	select IRQ_MIPS_CPU
297	select SYS_SUPPORTS_32BIT_KERNEL
298	select SYS_SUPPORTS_BIG_ENDIAN
299	select SYS_HAS_EARLY_PRINTK
300	select SWAP_IO_SPACE
301	select GPIOLIB
302	select MIPS_L1_CACHE_SHIFT_4
303	select CLKDEV_LOOKUP
304	select HAVE_LEGACY_CLK
305	help
306	  Support for BCM63XX based boards
307
308config MIPS_COBALT
309	bool "Cobalt Server"
310	select CEVT_R4K
311	select CSRC_R4K
312	select CEVT_GT641XX
313	select DMA_NONCOHERENT
314	select FORCE_PCI
315	select I8253
316	select I8259
317	select IRQ_MIPS_CPU
318	select IRQ_GT641XX
319	select PCI_GT64XXX_PCI0
320	select SYS_HAS_CPU_NEVADA
321	select SYS_HAS_EARLY_PRINTK
322	select SYS_SUPPORTS_32BIT_KERNEL
323	select SYS_SUPPORTS_64BIT_KERNEL
324	select SYS_SUPPORTS_LITTLE_ENDIAN
325	select USE_GENERIC_EARLY_PRINTK_8250
326
327config MACH_DECSTATION
328	bool "DECstations"
329	select BOOT_ELF32
330	select CEVT_DS1287
331	select CEVT_R4K if CPU_R4X00
332	select CSRC_IOASIC
333	select CSRC_R4K if CPU_R4X00
334	select CPU_DADDI_WORKAROUNDS if 64BIT
335	select CPU_R4000_WORKAROUNDS if 64BIT
336	select CPU_R4400_WORKAROUNDS if 64BIT
337	select DMA_NONCOHERENT
338	select NO_IOPORT_MAP
339	select IRQ_MIPS_CPU
340	select SYS_HAS_CPU_R3000
341	select SYS_HAS_CPU_R4X00
342	select SYS_SUPPORTS_32BIT_KERNEL
343	select SYS_SUPPORTS_64BIT_KERNEL
344	select SYS_SUPPORTS_LITTLE_ENDIAN
345	select SYS_SUPPORTS_128HZ
346	select SYS_SUPPORTS_256HZ
347	select SYS_SUPPORTS_1024HZ
348	select MIPS_L1_CACHE_SHIFT_4
349	help
350	  This enables support for DEC's MIPS based workstations.  For details
351	  see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
352	  DECstation porting pages on <http://decstation.unix-ag.org/>.
353
354	  If you have one of the following DECstation Models you definitely
355	  want to choose R4xx0 for the CPU Type:
356
357		DECstation 5000/50
358		DECstation 5000/150
359		DECstation 5000/260
360		DECsystem 5900/260
361
362	  otherwise choose R3000.
363
364config MACH_JAZZ
365	bool "Jazz family of machines"
366	select ARC_MEMORY
367	select ARC_PROMLIB
368	select ARCH_MIGHT_HAVE_PC_PARPORT
369	select ARCH_MIGHT_HAVE_PC_SERIO
370	select FW_ARC
371	select FW_ARC32
372	select ARCH_MAY_HAVE_PC_FDC
373	select CEVT_R4K
374	select CSRC_R4K
375	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
376	select GENERIC_ISA_DMA
377	select HAVE_PCSPKR_PLATFORM
378	select IRQ_MIPS_CPU
379	select I8253
380	select I8259
381	select ISA
382	select SYS_HAS_CPU_R4X00
383	select SYS_SUPPORTS_32BIT_KERNEL
384	select SYS_SUPPORTS_64BIT_KERNEL
385	select SYS_SUPPORTS_100HZ
386	help
387	  This a family of machines based on the MIPS R4030 chipset which was
388	  used by several vendors to build RISC/os and Windows NT workstations.
389	  Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
390	  Olivetti M700-10 workstations.
391
392config MACH_INGENIC
393	bool "Ingenic SoC based machines"
394	select SYS_SUPPORTS_32BIT_KERNEL
395	select SYS_SUPPORTS_LITTLE_ENDIAN
396	select SYS_SUPPORTS_ZBOOT_UART16550
397	select CPU_SUPPORTS_HUGEPAGES
398	select DMA_NONCOHERENT
399	select IRQ_MIPS_CPU
400	select PINCTRL
401	select GPIOLIB
402	select COMMON_CLK
403	select GENERIC_IRQ_CHIP
404	select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
405	select USE_OF
406
407config LANTIQ
408	bool "Lantiq based platforms"
409	select DMA_NONCOHERENT
410	select IRQ_MIPS_CPU
411	select CEVT_R4K
412	select CSRC_R4K
413	select SYS_HAS_CPU_MIPS32_R1
414	select SYS_HAS_CPU_MIPS32_R2
415	select SYS_SUPPORTS_BIG_ENDIAN
416	select SYS_SUPPORTS_32BIT_KERNEL
417	select SYS_SUPPORTS_MIPS16
418	select SYS_SUPPORTS_MULTITHREADING
419	select SYS_SUPPORTS_VPE_LOADER
420	select SYS_HAS_EARLY_PRINTK
421	select GPIOLIB
422	select SWAP_IO_SPACE
423	select BOOT_RAW
424	select CLKDEV_LOOKUP
425	select HAVE_LEGACY_CLK
426	select USE_OF
427	select PINCTRL
428	select PINCTRL_LANTIQ
429	select ARCH_HAS_RESET_CONTROLLER
430	select RESET_CONTROLLER
431
432config MACH_LOONGSON32
433	bool "Loongson 32-bit family of machines"
434	select SYS_SUPPORTS_ZBOOT
435	help
436	  This enables support for the Loongson-1 family of machines.
437
438	  Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
439	  the Institute of Computing Technology (ICT), Chinese Academy of
440	  Sciences (CAS).
441
442config MACH_LOONGSON2EF
443	bool "Loongson-2E/F family of machines"
444	select SYS_SUPPORTS_ZBOOT
445	help
446	  This enables the support of early Loongson-2E/F family of machines.
447
448config MACH_LOONGSON64
449	bool "Loongson 64-bit family of machines"
450	select ARCH_SPARSEMEM_ENABLE
451	select ARCH_MIGHT_HAVE_PC_PARPORT
452	select ARCH_MIGHT_HAVE_PC_SERIO
453	select GENERIC_ISA_DMA_SUPPORT_BROKEN
454	select BOOT_ELF32
455	select BOARD_SCACHE
456	select CSRC_R4K
457	select CEVT_R4K
458	select CPU_HAS_WB
459	select FORCE_PCI
460	select ISA
461	select I8259
462	select IRQ_MIPS_CPU
463	select NO_EXCEPT_FILL
464	select NR_CPUS_DEFAULT_64
465	select USE_GENERIC_EARLY_PRINTK_8250
466	select PCI_DRIVERS_GENERIC
467	select SYS_HAS_CPU_LOONGSON64
468	select SYS_HAS_EARLY_PRINTK
469	select SYS_SUPPORTS_SMP
470	select SYS_SUPPORTS_HOTPLUG_CPU
471	select SYS_SUPPORTS_NUMA
472	select SYS_SUPPORTS_64BIT_KERNEL
473	select SYS_SUPPORTS_HIGHMEM
474	select SYS_SUPPORTS_LITTLE_ENDIAN
475	select SYS_SUPPORTS_ZBOOT
476	select ZONE_DMA32
477	select NUMA
478	select COMMON_CLK
479	select USE_OF
480	select BUILTIN_DTB
481	help
482	  This enables the support of Loongson-2/3 family of machines.
483
484	  Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
485	  GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
486	  and Loongson-2F which will be removed), developed by the Institute
487	  of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
488
489config MACH_PISTACHIO
490	bool "IMG Pistachio SoC based boards"
491	select BOOT_ELF32
492	select BOOT_RAW
493	select CEVT_R4K
494	select CLKSRC_MIPS_GIC
495	select COMMON_CLK
496	select CSRC_R4K
497	select DMA_NONCOHERENT
498	select GPIOLIB
499	select IRQ_MIPS_CPU
500	select MFD_SYSCON
501	select MIPS_CPU_SCACHE
502	select MIPS_GIC
503	select PINCTRL
504	select REGULATOR
505	select SYS_HAS_CPU_MIPS32_R2
506	select SYS_SUPPORTS_32BIT_KERNEL
507	select SYS_SUPPORTS_LITTLE_ENDIAN
508	select SYS_SUPPORTS_MIPS_CPS
509	select SYS_SUPPORTS_MULTITHREADING
510	select SYS_SUPPORTS_RELOCATABLE
511	select SYS_SUPPORTS_ZBOOT
512	select SYS_HAS_EARLY_PRINTK
513	select USE_GENERIC_EARLY_PRINTK_8250
514	select USE_OF
515	help
516	  This enables support for the IMG Pistachio SoC platform.
517
518config MIPS_MALTA
519	bool "MIPS Malta board"
520	select ARCH_MAY_HAVE_PC_FDC
521	select ARCH_MIGHT_HAVE_PC_PARPORT
522	select ARCH_MIGHT_HAVE_PC_SERIO
523	select BOOT_ELF32
524	select BOOT_RAW
525	select BUILTIN_DTB
526	select CEVT_R4K
527	select CLKSRC_MIPS_GIC
528	select COMMON_CLK
529	select CSRC_R4K
530	select DMA_MAYBE_COHERENT
531	select GENERIC_ISA_DMA
532	select HAVE_PCSPKR_PLATFORM
533	select HAVE_PCI
534	select I8253
535	select I8259
536	select IRQ_MIPS_CPU
537	select MIPS_BONITO64
538	select MIPS_CPU_SCACHE
539	select MIPS_GIC
540	select MIPS_L1_CACHE_SHIFT_6
541	select MIPS_MSC
542	select PCI_GT64XXX_PCI0
543	select SMP_UP if SMP
544	select SWAP_IO_SPACE
545	select SYS_HAS_CPU_MIPS32_R1
546	select SYS_HAS_CPU_MIPS32_R2
547	select SYS_HAS_CPU_MIPS32_R3_5
548	select SYS_HAS_CPU_MIPS32_R5
549	select SYS_HAS_CPU_MIPS32_R6
550	select SYS_HAS_CPU_MIPS64_R1
551	select SYS_HAS_CPU_MIPS64_R2
552	select SYS_HAS_CPU_MIPS64_R6
553	select SYS_HAS_CPU_NEVADA
554	select SYS_HAS_CPU_RM7000
555	select SYS_SUPPORTS_32BIT_KERNEL
556	select SYS_SUPPORTS_64BIT_KERNEL
557	select SYS_SUPPORTS_BIG_ENDIAN
558	select SYS_SUPPORTS_HIGHMEM
559	select SYS_SUPPORTS_LITTLE_ENDIAN
560	select SYS_SUPPORTS_MICROMIPS
561	select SYS_SUPPORTS_MIPS16
562	select SYS_SUPPORTS_MIPS_CMP
563	select SYS_SUPPORTS_MIPS_CPS
564	select SYS_SUPPORTS_MULTITHREADING
565	select SYS_SUPPORTS_RELOCATABLE
566	select SYS_SUPPORTS_SMARTMIPS
567	select SYS_SUPPORTS_VPE_LOADER
568	select SYS_SUPPORTS_ZBOOT
569	select USE_OF
570	select ZONE_DMA32 if 64BIT
571	help
572	  This enables support for the MIPS Technologies Malta evaluation
573	  board.
574
575config MACH_PIC32
576	bool "Microchip PIC32 Family"
577	help
578	  This enables support for the Microchip PIC32 family of platforms.
579
580	  Microchip PIC32 is a family of general-purpose 32 bit MIPS core
581	  microcontrollers.
582
583config MACH_VR41XX
584	bool "NEC VR4100 series based machines"
585	select CEVT_R4K
586	select CSRC_R4K
587	select SYS_HAS_CPU_VR41XX
588	select SYS_SUPPORTS_MIPS16
589	select GPIOLIB
590
591config NXP_STB220
592	bool "NXP STB220 board"
593	select SOC_PNX833X
594	help
595	  Support for NXP Semiconductors STB220 Development Board.
596
597config NXP_STB225
598	bool "NXP 225 board"
599	select SOC_PNX833X
600	select SOC_PNX8335
601	help
602	  Support for NXP Semiconductors STB225 Development Board.
603
604config RALINK
605	bool "Ralink based machines"
606	select CEVT_R4K
607	select CSRC_R4K
608	select BOOT_RAW
609	select DMA_NONCOHERENT
610	select IRQ_MIPS_CPU
611	select USE_OF
612	select SYS_HAS_CPU_MIPS32_R1
613	select SYS_HAS_CPU_MIPS32_R2
614	select SYS_SUPPORTS_32BIT_KERNEL
615	select SYS_SUPPORTS_LITTLE_ENDIAN
616	select SYS_SUPPORTS_MIPS16
617	select SYS_HAS_EARLY_PRINTK
618	select CLKDEV_LOOKUP
619	select ARCH_HAS_RESET_CONTROLLER
620	select RESET_CONTROLLER
621
622config SGI_IP22
623	bool "SGI IP22 (Indy/Indigo2)"
624	select ARC_MEMORY
625	select ARC_PROMLIB
626	select FW_ARC
627	select FW_ARC32
628	select ARCH_MIGHT_HAVE_PC_SERIO
629	select BOOT_ELF32
630	select CEVT_R4K
631	select CSRC_R4K
632	select DEFAULT_SGI_PARTITION
633	select DMA_NONCOHERENT
634	select HAVE_EISA
635	select I8253
636	select I8259
637	select IP22_CPU_SCACHE
638	select IRQ_MIPS_CPU
639	select GENERIC_ISA_DMA_SUPPORT_BROKEN
640	select SGI_HAS_I8042
641	select SGI_HAS_INDYDOG
642	select SGI_HAS_HAL2
643	select SGI_HAS_SEEQ
644	select SGI_HAS_WD93
645	select SGI_HAS_ZILOG
646	select SWAP_IO_SPACE
647	select SYS_HAS_CPU_R4X00
648	select SYS_HAS_CPU_R5000
649	select SYS_HAS_EARLY_PRINTK
650	select SYS_SUPPORTS_32BIT_KERNEL
651	select SYS_SUPPORTS_64BIT_KERNEL
652	select SYS_SUPPORTS_BIG_ENDIAN
653	select MIPS_L1_CACHE_SHIFT_7
654	help
655	  This are the SGI Indy, Challenge S and Indigo2, as well as certain
656	  OEM variants like the Tandem CMN B006S. To compile a Linux kernel
657	  that runs on these, say Y here.
658
659config SGI_IP27
660	bool "SGI IP27 (Origin200/2000)"
661	select ARCH_HAS_PHYS_TO_DMA
662	select ARCH_SPARSEMEM_ENABLE
663	select FW_ARC
664	select FW_ARC64
665	select ARC_CMDLINE_ONLY
666	select BOOT_ELF64
667	select DEFAULT_SGI_PARTITION
668	select SYS_HAS_EARLY_PRINTK
669	select HAVE_PCI
670	select IRQ_MIPS_CPU
671	select IRQ_DOMAIN_HIERARCHY
672	select NR_CPUS_DEFAULT_64
673	select PCI_DRIVERS_GENERIC
674	select PCI_XTALK_BRIDGE
675	select SYS_HAS_CPU_R10000
676	select SYS_SUPPORTS_64BIT_KERNEL
677	select SYS_SUPPORTS_BIG_ENDIAN
678	select SYS_SUPPORTS_NUMA
679	select SYS_SUPPORTS_SMP
680	select MIPS_L1_CACHE_SHIFT_7
681	help
682	  This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
683	  workstations.  To compile a Linux kernel that runs on these, say Y
684	  here.
685
686config SGI_IP28
687	bool "SGI IP28 (Indigo2 R10k)"
688	select ARC_MEMORY
689	select ARC_PROMLIB
690	select FW_ARC
691	select FW_ARC64
692	select ARCH_MIGHT_HAVE_PC_SERIO
693	select BOOT_ELF64
694	select CEVT_R4K
695	select CSRC_R4K
696	select DEFAULT_SGI_PARTITION
697	select DMA_NONCOHERENT
698	select GENERIC_ISA_DMA_SUPPORT_BROKEN
699	select IRQ_MIPS_CPU
700	select HAVE_EISA
701	select I8253
702	select I8259
703	select SGI_HAS_I8042
704	select SGI_HAS_INDYDOG
705	select SGI_HAS_HAL2
706	select SGI_HAS_SEEQ
707	select SGI_HAS_WD93
708	select SGI_HAS_ZILOG
709	select SWAP_IO_SPACE
710	select SYS_HAS_CPU_R10000
711	select SYS_HAS_EARLY_PRINTK
712	select SYS_SUPPORTS_64BIT_KERNEL
713	select SYS_SUPPORTS_BIG_ENDIAN
714	select MIPS_L1_CACHE_SHIFT_7
715	help
716	  This is the SGI Indigo2 with R10000 processor.  To compile a Linux
717	  kernel that runs on these, say Y here.
718
719config SGI_IP30
720	bool "SGI IP30 (Octane/Octane2)"
721	select ARCH_HAS_PHYS_TO_DMA
722	select FW_ARC
723	select FW_ARC64
724	select BOOT_ELF64
725	select CEVT_R4K
726	select CSRC_R4K
727	select SYNC_R4K if SMP
728	select ZONE_DMA32
729	select HAVE_PCI
730	select IRQ_MIPS_CPU
731	select IRQ_DOMAIN_HIERARCHY
732	select NR_CPUS_DEFAULT_2
733	select PCI_DRIVERS_GENERIC
734	select PCI_XTALK_BRIDGE
735	select SYS_HAS_EARLY_PRINTK
736	select SYS_HAS_CPU_R10000
737	select SYS_SUPPORTS_64BIT_KERNEL
738	select SYS_SUPPORTS_BIG_ENDIAN
739	select SYS_SUPPORTS_SMP
740	select MIPS_L1_CACHE_SHIFT_7
741	select ARC_MEMORY
742	help
743	  These are the SGI Octane and Octane2 graphics workstations.  To
744	  compile a Linux kernel that runs on these, say Y here.
745
746config SGI_IP32
747	bool "SGI IP32 (O2)"
748	select ARC_MEMORY
749	select ARC_PROMLIB
750	select ARCH_HAS_PHYS_TO_DMA
751	select FW_ARC
752	select FW_ARC32
753	select BOOT_ELF32
754	select CEVT_R4K
755	select CSRC_R4K
756	select DMA_NONCOHERENT
757	select HAVE_PCI
758	select IRQ_MIPS_CPU
759	select R5000_CPU_SCACHE
760	select RM7000_CPU_SCACHE
761	select SYS_HAS_CPU_R5000
762	select SYS_HAS_CPU_R10000 if BROKEN
763	select SYS_HAS_CPU_RM7000
764	select SYS_HAS_CPU_NEVADA
765	select SYS_SUPPORTS_64BIT_KERNEL
766	select SYS_SUPPORTS_BIG_ENDIAN
767	help
768	  If you want this kernel to run on SGI O2 workstation, say Y here.
769
770config SIBYTE_CRHINE
771	bool "Sibyte BCM91120C-CRhine"
772	select BOOT_ELF32
773	select SIBYTE_BCM1120
774	select SWAP_IO_SPACE
775	select SYS_HAS_CPU_SB1
776	select SYS_SUPPORTS_BIG_ENDIAN
777	select SYS_SUPPORTS_LITTLE_ENDIAN
778
779config SIBYTE_CARMEL
780	bool "Sibyte BCM91120x-Carmel"
781	select BOOT_ELF32
782	select SIBYTE_BCM1120
783	select SWAP_IO_SPACE
784	select SYS_HAS_CPU_SB1
785	select SYS_SUPPORTS_BIG_ENDIAN
786	select SYS_SUPPORTS_LITTLE_ENDIAN
787
788config SIBYTE_CRHONE
789	bool "Sibyte BCM91125C-CRhone"
790	select BOOT_ELF32
791	select SIBYTE_BCM1125
792	select SWAP_IO_SPACE
793	select SYS_HAS_CPU_SB1
794	select SYS_SUPPORTS_BIG_ENDIAN
795	select SYS_SUPPORTS_HIGHMEM
796	select SYS_SUPPORTS_LITTLE_ENDIAN
797
798config SIBYTE_RHONE
799	bool "Sibyte BCM91125E-Rhone"
800	select BOOT_ELF32
801	select SIBYTE_BCM1125H
802	select SWAP_IO_SPACE
803	select SYS_HAS_CPU_SB1
804	select SYS_SUPPORTS_BIG_ENDIAN
805	select SYS_SUPPORTS_LITTLE_ENDIAN
806
807config SIBYTE_SWARM
808	bool "Sibyte BCM91250A-SWARM"
809	select BOOT_ELF32
810	select HAVE_PATA_PLATFORM
811	select SIBYTE_SB1250
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	select ZONE_DMA32 if 64BIT
818	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
819
820config SIBYTE_LITTLESUR
821	bool "Sibyte BCM91250C2-LittleSur"
822	select BOOT_ELF32
823	select HAVE_PATA_PLATFORM
824	select SIBYTE_SB1250
825	select SWAP_IO_SPACE
826	select SYS_HAS_CPU_SB1
827	select SYS_SUPPORTS_BIG_ENDIAN
828	select SYS_SUPPORTS_HIGHMEM
829	select SYS_SUPPORTS_LITTLE_ENDIAN
830	select ZONE_DMA32 if 64BIT
831
832config SIBYTE_SENTOSA
833	bool "Sibyte BCM91250E-Sentosa"
834	select BOOT_ELF32
835	select SIBYTE_SB1250
836	select SWAP_IO_SPACE
837	select SYS_HAS_CPU_SB1
838	select SYS_SUPPORTS_BIG_ENDIAN
839	select SYS_SUPPORTS_LITTLE_ENDIAN
840	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
841
842config SIBYTE_BIGSUR
843	bool "Sibyte BCM91480B-BigSur"
844	select BOOT_ELF32
845	select NR_CPUS_DEFAULT_4
846	select SIBYTE_BCM1x80
847	select SWAP_IO_SPACE
848	select SYS_HAS_CPU_SB1
849	select SYS_SUPPORTS_BIG_ENDIAN
850	select SYS_SUPPORTS_HIGHMEM
851	select SYS_SUPPORTS_LITTLE_ENDIAN
852	select ZONE_DMA32 if 64BIT
853	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
854
855config SNI_RM
856	bool "SNI RM200/300/400"
857	select ARC_MEMORY
858	select ARC_PROMLIB
859	select FW_ARC if CPU_LITTLE_ENDIAN
860	select FW_ARC32 if CPU_LITTLE_ENDIAN
861	select FW_SNIPROM if CPU_BIG_ENDIAN
862	select ARCH_MAY_HAVE_PC_FDC
863	select ARCH_MIGHT_HAVE_PC_PARPORT
864	select ARCH_MIGHT_HAVE_PC_SERIO
865	select BOOT_ELF32
866	select CEVT_R4K
867	select CSRC_R4K
868	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
869	select DMA_NONCOHERENT
870	select GENERIC_ISA_DMA
871	select HAVE_EISA
872	select HAVE_PCSPKR_PLATFORM
873	select HAVE_PCI
874	select IRQ_MIPS_CPU
875	select I8253
876	select I8259
877	select ISA
878	select SWAP_IO_SPACE if CPU_BIG_ENDIAN
879	select SYS_HAS_CPU_R4X00
880	select SYS_HAS_CPU_R5000
881	select SYS_HAS_CPU_R10000
882	select R5000_CPU_SCACHE
883	select SYS_HAS_EARLY_PRINTK
884	select SYS_SUPPORTS_32BIT_KERNEL
885	select SYS_SUPPORTS_64BIT_KERNEL
886	select SYS_SUPPORTS_BIG_ENDIAN
887	select SYS_SUPPORTS_HIGHMEM
888	select SYS_SUPPORTS_LITTLE_ENDIAN
889	help
890	  The SNI RM200/300/400 are MIPS-based machines manufactured by
891	  Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
892	  Technology and now in turn merged with Fujitsu.  Say Y here to
893	  support this machine type.
894
895config MACH_TX39XX
896	bool "Toshiba TX39 series based machines"
897
898config MACH_TX49XX
899	bool "Toshiba TX49 series based machines"
900
901config MIKROTIK_RB532
902	bool "Mikrotik RB532 boards"
903	select CEVT_R4K
904	select CSRC_R4K
905	select DMA_NONCOHERENT
906	select HAVE_PCI
907	select IRQ_MIPS_CPU
908	select SYS_HAS_CPU_MIPS32_R1
909	select SYS_SUPPORTS_32BIT_KERNEL
910	select SYS_SUPPORTS_LITTLE_ENDIAN
911	select SWAP_IO_SPACE
912	select BOOT_RAW
913	select GPIOLIB
914	select MIPS_L1_CACHE_SHIFT_4
915	help
916	  Support the Mikrotik(tm) RouterBoard 532 series,
917	  based on the IDT RC32434 SoC.
918
919config CAVIUM_OCTEON_SOC
920	bool "Cavium Networks Octeon SoC based boards"
921	select CEVT_R4K
922	select ARCH_HAS_PHYS_TO_DMA
923	select HAVE_RAPIDIO
924	select PHYS_ADDR_T_64BIT
925	select SYS_SUPPORTS_64BIT_KERNEL
926	select SYS_SUPPORTS_BIG_ENDIAN
927	select EDAC_SUPPORT
928	select EDAC_ATOMIC_SCRUB
929	select SYS_SUPPORTS_LITTLE_ENDIAN
930	select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
931	select SYS_HAS_EARLY_PRINTK
932	select SYS_HAS_CPU_CAVIUM_OCTEON
933	select HAVE_PCI
934	select HAVE_PLAT_DELAY
935	select HAVE_PLAT_FW_INIT_CMDLINE
936	select HAVE_PLAT_MEMCPY
937	select ZONE_DMA32
938	select HOLES_IN_ZONE
939	select GPIOLIB
940	select USE_OF
941	select ARCH_SPARSEMEM_ENABLE
942	select SYS_SUPPORTS_SMP
943	select NR_CPUS_DEFAULT_64
944	select MIPS_NR_CPU_NR_MAP_1024
945	select BUILTIN_DTB
946	select MTD_COMPLEX_MAPPINGS
947	select SWIOTLB
948	select SYS_SUPPORTS_RELOCATABLE
949	help
950	  This option supports all of the Octeon reference boards from Cavium
951	  Networks. It builds a kernel that dynamically determines the Octeon
952	  CPU type and supports all known board reference implementations.
953	  Some of the supported boards are:
954		EBT3000
955		EBH3000
956		EBH3100
957		Thunder
958		Kodama
959		Hikari
960	  Say Y here for most Octeon reference boards.
961
962config NLM_XLR_BOARD
963	bool "Netlogic XLR/XLS based systems"
964	select BOOT_ELF32
965	select NLM_COMMON
966	select SYS_HAS_CPU_XLR
967	select SYS_SUPPORTS_SMP
968	select HAVE_PCI
969	select SWAP_IO_SPACE
970	select SYS_SUPPORTS_32BIT_KERNEL
971	select SYS_SUPPORTS_64BIT_KERNEL
972	select PHYS_ADDR_T_64BIT
973	select SYS_SUPPORTS_BIG_ENDIAN
974	select SYS_SUPPORTS_HIGHMEM
975	select NR_CPUS_DEFAULT_32
976	select CEVT_R4K
977	select CSRC_R4K
978	select IRQ_MIPS_CPU
979	select ZONE_DMA32 if 64BIT
980	select SYNC_R4K
981	select SYS_HAS_EARLY_PRINTK
982	select SYS_SUPPORTS_ZBOOT
983	select SYS_SUPPORTS_ZBOOT_UART16550
984	help
985	  Support for systems based on Netlogic XLR and XLS processors.
986	  Say Y here if you have a XLR or XLS based board.
987
988config NLM_XLP_BOARD
989	bool "Netlogic XLP based systems"
990	select BOOT_ELF32
991	select NLM_COMMON
992	select SYS_HAS_CPU_XLP
993	select SYS_SUPPORTS_SMP
994	select HAVE_PCI
995	select SYS_SUPPORTS_32BIT_KERNEL
996	select SYS_SUPPORTS_64BIT_KERNEL
997	select PHYS_ADDR_T_64BIT
998	select GPIOLIB
999	select SYS_SUPPORTS_BIG_ENDIAN
1000	select SYS_SUPPORTS_LITTLE_ENDIAN
1001	select SYS_SUPPORTS_HIGHMEM
1002	select NR_CPUS_DEFAULT_32
1003	select CEVT_R4K
1004	select CSRC_R4K
1005	select IRQ_MIPS_CPU
1006	select ZONE_DMA32 if 64BIT
1007	select SYNC_R4K
1008	select SYS_HAS_EARLY_PRINTK
1009	select USE_OF
1010	select SYS_SUPPORTS_ZBOOT
1011	select SYS_SUPPORTS_ZBOOT_UART16550
1012	help
1013	  This board is based on Netlogic XLP Processor.
1014	  Say Y here if you have a XLP based board.
1015
1016config MIPS_PARAVIRT
1017	bool "Para-Virtualized guest system"
1018	select CEVT_R4K
1019	select CSRC_R4K
1020	select SYS_SUPPORTS_64BIT_KERNEL
1021	select SYS_SUPPORTS_32BIT_KERNEL
1022	select SYS_SUPPORTS_BIG_ENDIAN
1023	select SYS_SUPPORTS_SMP
1024	select NR_CPUS_DEFAULT_4
1025	select SYS_HAS_EARLY_PRINTK
1026	select SYS_HAS_CPU_MIPS32_R2
1027	select SYS_HAS_CPU_MIPS64_R2
1028	select SYS_HAS_CPU_CAVIUM_OCTEON
1029	select HAVE_PCI
1030	select SWAP_IO_SPACE
1031	help
1032	  This option supports guest running under ????
1033
1034endchoice
1035
1036source "arch/mips/alchemy/Kconfig"
1037source "arch/mips/ath25/Kconfig"
1038source "arch/mips/ath79/Kconfig"
1039source "arch/mips/bcm47xx/Kconfig"
1040source "arch/mips/bcm63xx/Kconfig"
1041source "arch/mips/bmips/Kconfig"
1042source "arch/mips/generic/Kconfig"
1043source "arch/mips/jazz/Kconfig"
1044source "arch/mips/jz4740/Kconfig"
1045source "arch/mips/lantiq/Kconfig"
1046source "arch/mips/pic32/Kconfig"
1047source "arch/mips/pistachio/Kconfig"
1048source "arch/mips/ralink/Kconfig"
1049source "arch/mips/sgi-ip27/Kconfig"
1050source "arch/mips/sibyte/Kconfig"
1051source "arch/mips/txx9/Kconfig"
1052source "arch/mips/vr41xx/Kconfig"
1053source "arch/mips/cavium-octeon/Kconfig"
1054source "arch/mips/loongson2ef/Kconfig"
1055source "arch/mips/loongson32/Kconfig"
1056source "arch/mips/loongson64/Kconfig"
1057source "arch/mips/netlogic/Kconfig"
1058source "arch/mips/paravirt/Kconfig"
1059
1060endmenu
1061
1062config GENERIC_HWEIGHT
1063	bool
1064	default y
1065
1066config GENERIC_CALIBRATE_DELAY
1067	bool
1068	default y
1069
1070config SCHED_OMIT_FRAME_POINTER
1071	bool
1072	default y
1073
1074#
1075# Select some configuration options automatically based on user selections.
1076#
1077config FW_ARC
1078	bool
1079
1080config ARCH_MAY_HAVE_PC_FDC
1081	bool
1082
1083config BOOT_RAW
1084	bool
1085
1086config CEVT_BCM1480
1087	bool
1088
1089config CEVT_DS1287
1090	bool
1091
1092config CEVT_GT641XX
1093	bool
1094
1095config CEVT_R4K
1096	bool
1097
1098config CEVT_SB1250
1099	bool
1100
1101config CEVT_TXX9
1102	bool
1103
1104config CSRC_BCM1480
1105	bool
1106
1107config CSRC_IOASIC
1108	bool
1109
1110config CSRC_R4K
1111	select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1112	bool
1113
1114config CSRC_SB1250
1115	bool
1116
1117config MIPS_CLOCK_VSYSCALL
1118	def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1119
1120config GPIO_TXX9
1121	select GPIOLIB
1122	bool
1123
1124config FW_CFE
1125	bool
1126
1127config ARCH_SUPPORTS_UPROBES
1128	bool
1129
1130config DMA_MAYBE_COHERENT
1131	select ARCH_HAS_DMA_COHERENCE_H
1132	select DMA_NONCOHERENT
1133	bool
1134
1135config DMA_PERDEV_COHERENT
1136	bool
1137	select ARCH_HAS_SETUP_DMA_OPS
1138	select DMA_NONCOHERENT
1139
1140config DMA_NONCOHERENT
1141	bool
1142	#
1143	# MIPS allows mixing "slightly different" Cacheability and Coherency
1144	# Attribute bits.  It is believed that the uncached access through
1145	# KSEG1 and the implementation specific "uncached accelerated" used
1146	# by pgprot_writcombine can be mixed, and the latter sometimes provides
1147	# significant advantages.
1148	#
1149	select ARCH_HAS_DMA_WRITE_COMBINE
1150	select ARCH_HAS_DMA_PREP_COHERENT
1151	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1152	select ARCH_HAS_DMA_SET_UNCACHED
1153	select DMA_NONCOHERENT_MMAP
1154	select DMA_NONCOHERENT_CACHE_SYNC
1155	select NEED_DMA_MAP_STATE
1156
1157config SYS_HAS_EARLY_PRINTK
1158	bool
1159
1160config SYS_SUPPORTS_HOTPLUG_CPU
1161	bool
1162
1163config MIPS_BONITO64
1164	bool
1165
1166config MIPS_MSC
1167	bool
1168
1169config SYNC_R4K
1170	bool
1171
1172config MIPS_MACHINE
1173	def_bool n
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 HOLES_IN_ZONE
1203	bool
1204
1205config SYS_SUPPORTS_RELOCATABLE
1206	bool
1207	help
1208	  Selected if the platform supports relocating the kernel.
1209	  The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1210	  to allow access to command line and entropy sources.
1211
1212config MIPS_CBPF_JIT
1213	def_bool y
1214	depends on BPF_JIT && HAVE_CBPF_JIT
1215
1216config MIPS_EBPF_JIT
1217	def_bool y
1218	depends on BPF_JIT && HAVE_EBPF_JIT
1219
1220
1221#
1222# Endianness selection.  Sufficiently obscure so many users don't know what to
1223# answer,so we try hard to limit the available choices.  Also the use of a
1224# choice statement should be more obvious to the user.
1225#
1226choice
1227	prompt "Endianness selection"
1228	help
1229	  Some MIPS machines can be configured for either little or big endian
1230	  byte order. These modes require different kernels and a different
1231	  Linux distribution.  In general there is one preferred byteorder for a
1232	  particular system but some systems are just as commonly used in the
1233	  one or the other endianness.
1234
1235config CPU_BIG_ENDIAN
1236	bool "Big endian"
1237	depends on SYS_SUPPORTS_BIG_ENDIAN
1238
1239config CPU_LITTLE_ENDIAN
1240	bool "Little endian"
1241	depends on SYS_SUPPORTS_LITTLE_ENDIAN
1242
1243endchoice
1244
1245config EXPORT_UASM
1246	bool
1247
1248config SYS_SUPPORTS_APM_EMULATION
1249	bool
1250
1251config SYS_SUPPORTS_BIG_ENDIAN
1252	bool
1253
1254config SYS_SUPPORTS_LITTLE_ENDIAN
1255	bool
1256
1257config SYS_SUPPORTS_HUGETLBFS
1258	bool
1259	depends on CPU_SUPPORTS_HUGEPAGES
1260	default y
1261
1262config MIPS_HUGE_TLB_SUPPORT
1263	def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1264
1265config IRQ_CPU_RM7K
1266	bool
1267
1268config IRQ_MSP_SLP
1269	bool
1270
1271config IRQ_MSP_CIC
1272	bool
1273
1274config IRQ_TXX9
1275	bool
1276
1277config IRQ_GT641XX
1278	bool
1279
1280config PCI_GT64XXX_PCI0
1281	bool
1282
1283config PCI_XTALK_BRIDGE
1284	bool
1285
1286config NO_EXCEPT_FILL
1287	bool
1288
1289config SOC_PNX833X
1290	bool
1291	select CEVT_R4K
1292	select CSRC_R4K
1293	select IRQ_MIPS_CPU
1294	select DMA_NONCOHERENT
1295	select SYS_HAS_CPU_MIPS32_R2
1296	select SYS_SUPPORTS_32BIT_KERNEL
1297	select SYS_SUPPORTS_LITTLE_ENDIAN
1298	select SYS_SUPPORTS_BIG_ENDIAN
1299	select SYS_SUPPORTS_MIPS16
1300	select CPU_MIPSR2_IRQ_VI
1301
1302config SOC_PNX8335
1303	bool
1304	select SOC_PNX833X
1305
1306config MIPS_SPRAM
1307	bool
1308
1309config SWAP_IO_SPACE
1310	bool
1311
1312config SGI_HAS_INDYDOG
1313	bool
1314
1315config SGI_HAS_HAL2
1316	bool
1317
1318config SGI_HAS_SEEQ
1319	bool
1320
1321config SGI_HAS_WD93
1322	bool
1323
1324config SGI_HAS_ZILOG
1325	bool
1326
1327config SGI_HAS_I8042
1328	bool
1329
1330config DEFAULT_SGI_PARTITION
1331	bool
1332
1333config FW_ARC32
1334	bool
1335
1336config FW_SNIPROM
1337	bool
1338
1339config BOOT_ELF32
1340	bool
1341
1342config MIPS_L1_CACHE_SHIFT_4
1343	bool
1344
1345config MIPS_L1_CACHE_SHIFT_5
1346	bool
1347
1348config MIPS_L1_CACHE_SHIFT_6
1349	bool
1350
1351config MIPS_L1_CACHE_SHIFT_7
1352	bool
1353
1354config MIPS_L1_CACHE_SHIFT
1355	int
1356	default "7" if MIPS_L1_CACHE_SHIFT_7
1357	default "6" if MIPS_L1_CACHE_SHIFT_6
1358	default "5" if MIPS_L1_CACHE_SHIFT_5
1359	default "4" if MIPS_L1_CACHE_SHIFT_4
1360	default "5"
1361
1362config ARC_CMDLINE_ONLY
1363	bool
1364
1365config ARC_CONSOLE
1366	bool "ARC console support"
1367	depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1368
1369config ARC_MEMORY
1370	bool
1371
1372config ARC_PROMLIB
1373	bool
1374
1375config FW_ARC64
1376	bool
1377
1378config BOOT_ELF64
1379	bool
1380
1381menu "CPU selection"
1382
1383choice
1384	prompt "CPU type"
1385	default CPU_R4X00
1386
1387config CPU_LOONGSON64
1388	bool "Loongson 64-bit CPU"
1389	depends on SYS_HAS_CPU_LOONGSON64
1390	select ARCH_HAS_PHYS_TO_DMA
1391	select CPU_MIPSR2
1392	select CPU_HAS_PREFETCH
1393	select CPU_SUPPORTS_64BIT_KERNEL
1394	select CPU_SUPPORTS_HIGHMEM
1395	select CPU_SUPPORTS_HUGEPAGES
1396	select CPU_SUPPORTS_MSA
1397	select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1398	select CPU_MIPSR2_IRQ_VI
1399	select WEAK_ORDERING
1400	select WEAK_REORDERING_BEYOND_LLSC
1401	select MIPS_ASID_BITS_VARIABLE
1402	select MIPS_PGD_C0_CONTEXT
1403	select MIPS_L1_CACHE_SHIFT_6
1404	select GPIOLIB
1405	select SWIOTLB
1406	help
1407		The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1408		cores implements the MIPS64R2 instruction set with many extensions,
1409		including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1410		3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1411		Loongson-2E/2F is not covered here and will be removed in future.
1412
1413config LOONGSON3_ENHANCEMENT
1414	bool "New Loongson-3 CPU Enhancements"
1415	default n
1416	depends on CPU_LOONGSON64
1417	help
1418	  New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1419	  R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1420	  FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1421	  Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1422	  Fast TLB refill support, etc.
1423
1424	  This option enable those enhancements which are not probed at run
1425	  time. If you want a generic kernel to run on all Loongson 3 machines,
1426	  please say 'N' here. If you want a high-performance kernel to run on
1427	  new Loongson-3 machines only, please say 'Y' here.
1428
1429config CPU_LOONGSON3_WORKAROUNDS
1430	bool "Old Loongson-3 LLSC Workarounds"
1431	default y if SMP
1432	depends on CPU_LOONGSON64
1433	help
1434	  Loongson-3 processors have the llsc issues which require workarounds.
1435	  Without workarounds the system may hang unexpectedly.
1436
1437	  Newer Loongson-3 will fix these issues and no workarounds are needed.
1438	  The workarounds have no significant side effect on them but may
1439	  decrease the performance of the system so this option should be
1440	  disabled unless the kernel is intended to be run on old systems.
1441
1442	  If unsure, please say Y.
1443
1444config CPU_LOONGSON3_CPUCFG_EMULATION
1445	bool "Emulate the CPUCFG instruction on older Loongson cores"
1446	default y
1447	depends on CPU_LOONGSON64
1448	help
1449	  Loongson-3A R4 and newer have the CPUCFG instruction available for
1450	  userland to query CPU capabilities, much like CPUID on x86. This
1451	  option provides emulation of the instruction on older Loongson
1452	  cores, back to Loongson-3A1000.
1453
1454	  If unsure, please say Y.
1455
1456config CPU_LOONGSON2E
1457	bool "Loongson 2E"
1458	depends on SYS_HAS_CPU_LOONGSON2E
1459	select CPU_LOONGSON2EF
1460	help
1461	  The Loongson 2E processor implements the MIPS III instruction set
1462	  with many extensions.
1463
1464	  It has an internal FPGA northbridge, which is compatible to
1465	  bonito64.
1466
1467config CPU_LOONGSON2F
1468	bool "Loongson 2F"
1469	depends on SYS_HAS_CPU_LOONGSON2F
1470	select CPU_LOONGSON2EF
1471	select GPIOLIB
1472	help
1473	  The Loongson 2F processor implements the MIPS III instruction set
1474	  with many extensions.
1475
1476	  Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1477	  have a similar programming interface with FPGA northbridge used in
1478	  Loongson2E.
1479
1480config CPU_LOONGSON1B
1481	bool "Loongson 1B"
1482	depends on SYS_HAS_CPU_LOONGSON1B
1483	select CPU_LOONGSON32
1484	select LEDS_GPIO_REGISTER
1485	help
1486	  The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1487	  Release 1 instruction set and part of the MIPS32 Release 2
1488	  instruction set.
1489
1490config CPU_LOONGSON1C
1491	bool "Loongson 1C"
1492	depends on SYS_HAS_CPU_LOONGSON1C
1493	select CPU_LOONGSON32
1494	select LEDS_GPIO_REGISTER
1495	help
1496	  The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1497	  Release 1 instruction set and part of the MIPS32 Release 2
1498	  instruction set.
1499
1500config CPU_MIPS32_R1
1501	bool "MIPS32 Release 1"
1502	depends on SYS_HAS_CPU_MIPS32_R1
1503	select CPU_HAS_PREFETCH
1504	select CPU_SUPPORTS_32BIT_KERNEL
1505	select CPU_SUPPORTS_HIGHMEM
1506	help
1507	  Choose this option to build a kernel for release 1 or later of the
1508	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1509	  MIPS processor are based on a MIPS32 processor.  If you know the
1510	  specific type of processor in your system, choose those that one
1511	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1512	  Release 2 of the MIPS32 architecture is available since several
1513	  years so chances are you even have a MIPS32 Release 2 processor
1514	  in which case you should choose CPU_MIPS32_R2 instead for better
1515	  performance.
1516
1517config CPU_MIPS32_R2
1518	bool "MIPS32 Release 2"
1519	depends on SYS_HAS_CPU_MIPS32_R2
1520	select CPU_HAS_PREFETCH
1521	select CPU_SUPPORTS_32BIT_KERNEL
1522	select CPU_SUPPORTS_HIGHMEM
1523	select CPU_SUPPORTS_MSA
1524	select HAVE_KVM
1525	help
1526	  Choose this option to build a kernel for release 2 or later of the
1527	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1528	  MIPS processor are based on a MIPS32 processor.  If you know the
1529	  specific type of processor in your system, choose those that one
1530	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1531
1532config CPU_MIPS32_R5
1533	bool "MIPS32 Release 5"
1534	depends on SYS_HAS_CPU_MIPS32_R5
1535	select CPU_HAS_PREFETCH
1536	select CPU_SUPPORTS_32BIT_KERNEL
1537	select CPU_SUPPORTS_HIGHMEM
1538	select CPU_SUPPORTS_MSA
1539	select HAVE_KVM
1540	select MIPS_O32_FP64_SUPPORT
1541	help
1542	  Choose this option to build a kernel for release 5 or later of the
1543	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1544	  family, are based on a MIPS32r5 processor. If you own an older
1545	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1546
1547config CPU_MIPS32_R6
1548	bool "MIPS32 Release 6"
1549	depends on SYS_HAS_CPU_MIPS32_R6
1550	select CPU_HAS_PREFETCH
1551	select CPU_NO_LOAD_STORE_LR
1552	select CPU_SUPPORTS_32BIT_KERNEL
1553	select CPU_SUPPORTS_HIGHMEM
1554	select CPU_SUPPORTS_MSA
1555	select HAVE_KVM
1556	select MIPS_O32_FP64_SUPPORT
1557	help
1558	  Choose this option to build a kernel for release 6 or later of the
1559	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1560	  family, are based on a MIPS32r6 processor. If you own an older
1561	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1562
1563config CPU_MIPS64_R1
1564	bool "MIPS64 Release 1"
1565	depends on SYS_HAS_CPU_MIPS64_R1
1566	select CPU_HAS_PREFETCH
1567	select CPU_SUPPORTS_32BIT_KERNEL
1568	select CPU_SUPPORTS_64BIT_KERNEL
1569	select CPU_SUPPORTS_HIGHMEM
1570	select CPU_SUPPORTS_HUGEPAGES
1571	help
1572	  Choose this option to build a kernel for release 1 or later of the
1573	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1574	  MIPS processor are based on a MIPS64 processor.  If you know the
1575	  specific type of processor in your system, choose those that one
1576	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1577	  Release 2 of the MIPS64 architecture is available since several
1578	  years so chances are you even have a MIPS64 Release 2 processor
1579	  in which case you should choose CPU_MIPS64_R2 instead for better
1580	  performance.
1581
1582config CPU_MIPS64_R2
1583	bool "MIPS64 Release 2"
1584	depends on SYS_HAS_CPU_MIPS64_R2
1585	select CPU_HAS_PREFETCH
1586	select CPU_SUPPORTS_32BIT_KERNEL
1587	select CPU_SUPPORTS_64BIT_KERNEL
1588	select CPU_SUPPORTS_HIGHMEM
1589	select CPU_SUPPORTS_HUGEPAGES
1590	select CPU_SUPPORTS_MSA
1591	select HAVE_KVM
1592	help
1593	  Choose this option to build a kernel for release 2 or later of the
1594	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1595	  MIPS processor are based on a MIPS64 processor.  If you know the
1596	  specific type of processor in your system, choose those that one
1597	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1598
1599config CPU_MIPS64_R5
1600	bool "MIPS64 Release 5"
1601	depends on SYS_HAS_CPU_MIPS64_R5
1602	select CPU_HAS_PREFETCH
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 5 or later of the
1612	  MIPS64 architecture.  This is a intermediate MIPS architecture
1613	  release partly implementing release 6 features. Though there is no
1614	  any hardware known to be based on this release.
1615
1616config CPU_MIPS64_R6
1617	bool "MIPS64 Release 6"
1618	depends on SYS_HAS_CPU_MIPS64_R6
1619	select CPU_HAS_PREFETCH
1620	select CPU_NO_LOAD_STORE_LR
1621	select CPU_SUPPORTS_32BIT_KERNEL
1622	select CPU_SUPPORTS_64BIT_KERNEL
1623	select CPU_SUPPORTS_HIGHMEM
1624	select CPU_SUPPORTS_HUGEPAGES
1625	select CPU_SUPPORTS_MSA
1626	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1627	select HAVE_KVM
1628	help
1629	  Choose this option to build a kernel for release 6 or later of the
1630	  MIPS64 architecture.  New MIPS processors, starting with the Warrior
1631	  family, are based on a MIPS64r6 processor. If you own an older
1632	  processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1633
1634config CPU_P5600
1635	bool "MIPS Warrior P5600"
1636	depends on SYS_HAS_CPU_P5600
1637	select CPU_HAS_PREFETCH
1638	select CPU_SUPPORTS_32BIT_KERNEL
1639	select CPU_SUPPORTS_HIGHMEM
1640	select CPU_SUPPORTS_MSA
1641	select CPU_SUPPORTS_UNCACHED_ACCELERATED
1642	select CPU_SUPPORTS_CPUFREQ
1643	select CPU_MIPSR2_IRQ_VI
1644	select CPU_MIPSR2_IRQ_EI
1645	select HAVE_KVM
1646	select MIPS_O32_FP64_SUPPORT
1647	help
1648	  Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1649	  It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1650	  MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1651	  level features like up to six P5600 calculation cores, CM2 with L2
1652	  cache, IOCU/IOMMU (though might be unused depending on the system-
1653	  specific IP core configuration), GIC, CPC, virtualisation module,
1654	  eJTAG and PDtrace.
1655
1656config CPU_R3000
1657	bool "R3000"
1658	depends on SYS_HAS_CPU_R3000
1659	select CPU_HAS_WB
1660	select CPU_R3K_TLB
1661	select CPU_SUPPORTS_32BIT_KERNEL
1662	select CPU_SUPPORTS_HIGHMEM
1663	help
1664	  Please make sure to pick the right CPU type. Linux/MIPS is not
1665	  designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1666	  *not* work on R4000 machines and vice versa.  However, since most
1667	  of the supported machines have an R4000 (or similar) CPU, R4x00
1668	  might be a safe bet.  If the resulting kernel does not work,
1669	  try to recompile with R3000.
1670
1671config CPU_TX39XX
1672	bool "R39XX"
1673	depends on SYS_HAS_CPU_TX39XX
1674	select CPU_SUPPORTS_32BIT_KERNEL
1675	select CPU_R3K_TLB
1676
1677config CPU_VR41XX
1678	bool "R41xx"
1679	depends on SYS_HAS_CPU_VR41XX
1680	select CPU_SUPPORTS_32BIT_KERNEL
1681	select CPU_SUPPORTS_64BIT_KERNEL
1682	help
1683	  The options selects support for the NEC VR4100 series of processors.
1684	  Only choose this option if you have one of these processors as a
1685	  kernel built with this option will not run on any other type of
1686	  processor or vice versa.
1687
1688config CPU_R4X00
1689	bool "R4x00"
1690	depends on SYS_HAS_CPU_R4X00
1691	select CPU_SUPPORTS_32BIT_KERNEL
1692	select CPU_SUPPORTS_64BIT_KERNEL
1693	select CPU_SUPPORTS_HUGEPAGES
1694	help
1695	  MIPS Technologies R4000-series processors other than 4300, including
1696	  the R4000, R4400, R4600, and 4700.
1697
1698config CPU_TX49XX
1699	bool "R49XX"
1700	depends on SYS_HAS_CPU_TX49XX
1701	select CPU_HAS_PREFETCH
1702	select CPU_SUPPORTS_32BIT_KERNEL
1703	select CPU_SUPPORTS_64BIT_KERNEL
1704	select CPU_SUPPORTS_HUGEPAGES
1705
1706config CPU_R5000
1707	bool "R5000"
1708	depends on SYS_HAS_CPU_R5000
1709	select CPU_SUPPORTS_32BIT_KERNEL
1710	select CPU_SUPPORTS_64BIT_KERNEL
1711	select CPU_SUPPORTS_HUGEPAGES
1712	help
1713	  MIPS Technologies R5000-series processors other than the Nevada.
1714
1715config CPU_R5500
1716	bool "R5500"
1717	depends on SYS_HAS_CPU_R5500
1718	select CPU_SUPPORTS_32BIT_KERNEL
1719	select CPU_SUPPORTS_64BIT_KERNEL
1720	select CPU_SUPPORTS_HUGEPAGES
1721	help
1722	  NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1723	  instruction set.
1724
1725config CPU_NEVADA
1726	bool "RM52xx"
1727	depends on SYS_HAS_CPU_NEVADA
1728	select CPU_SUPPORTS_32BIT_KERNEL
1729	select CPU_SUPPORTS_64BIT_KERNEL
1730	select CPU_SUPPORTS_HUGEPAGES
1731	help
1732	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1733
1734config CPU_R10000
1735	bool "R10000"
1736	depends on SYS_HAS_CPU_R10000
1737	select CPU_HAS_PREFETCH
1738	select CPU_SUPPORTS_32BIT_KERNEL
1739	select CPU_SUPPORTS_64BIT_KERNEL
1740	select CPU_SUPPORTS_HIGHMEM
1741	select CPU_SUPPORTS_HUGEPAGES
1742	help
1743	  MIPS Technologies R10000-series processors.
1744
1745config CPU_RM7000
1746	bool "RM7000"
1747	depends on SYS_HAS_CPU_RM7000
1748	select CPU_HAS_PREFETCH
1749	select CPU_SUPPORTS_32BIT_KERNEL
1750	select CPU_SUPPORTS_64BIT_KERNEL
1751	select CPU_SUPPORTS_HIGHMEM
1752	select CPU_SUPPORTS_HUGEPAGES
1753
1754config CPU_SB1
1755	bool "SB1"
1756	depends on SYS_HAS_CPU_SB1
1757	select CPU_SUPPORTS_32BIT_KERNEL
1758	select CPU_SUPPORTS_64BIT_KERNEL
1759	select CPU_SUPPORTS_HIGHMEM
1760	select CPU_SUPPORTS_HUGEPAGES
1761	select WEAK_ORDERING
1762
1763config CPU_CAVIUM_OCTEON
1764	bool "Cavium Octeon processor"
1765	depends on SYS_HAS_CPU_CAVIUM_OCTEON
1766	select CPU_HAS_PREFETCH
1767	select CPU_SUPPORTS_64BIT_KERNEL
1768	select WEAK_ORDERING
1769	select CPU_SUPPORTS_HIGHMEM
1770	select CPU_SUPPORTS_HUGEPAGES
1771	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1772	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1773	select MIPS_L1_CACHE_SHIFT_7
1774	select HAVE_KVM
1775	help
1776	  The Cavium Octeon processor is a highly integrated chip containing
1777	  many ethernet hardware widgets for networking tasks. The processor
1778	  can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1779	  Full details can be found at http://www.caviumnetworks.com.
1780
1781config CPU_BMIPS
1782	bool "Broadcom BMIPS"
1783	depends on SYS_HAS_CPU_BMIPS
1784	select CPU_MIPS32
1785	select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1786	select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1787	select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1788	select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1789	select CPU_SUPPORTS_32BIT_KERNEL
1790	select DMA_NONCOHERENT
1791	select IRQ_MIPS_CPU
1792	select SWAP_IO_SPACE
1793	select WEAK_ORDERING
1794	select CPU_SUPPORTS_HIGHMEM
1795	select CPU_HAS_PREFETCH
1796	select CPU_SUPPORTS_CPUFREQ
1797	select MIPS_EXTERNAL_TIMER
1798	help
1799	  Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1800
1801config CPU_XLR
1802	bool "Netlogic XLR SoC"
1803	depends on SYS_HAS_CPU_XLR
1804	select CPU_SUPPORTS_32BIT_KERNEL
1805	select CPU_SUPPORTS_64BIT_KERNEL
1806	select CPU_SUPPORTS_HIGHMEM
1807	select CPU_SUPPORTS_HUGEPAGES
1808	select WEAK_ORDERING
1809	select WEAK_REORDERING_BEYOND_LLSC
1810	help
1811	  Netlogic Microsystems XLR/XLS processors.
1812
1813config CPU_XLP
1814	bool "Netlogic XLP SoC"
1815	depends on SYS_HAS_CPU_XLP
1816	select CPU_SUPPORTS_32BIT_KERNEL
1817	select CPU_SUPPORTS_64BIT_KERNEL
1818	select CPU_SUPPORTS_HIGHMEM
1819	select WEAK_ORDERING
1820	select WEAK_REORDERING_BEYOND_LLSC
1821	select CPU_HAS_PREFETCH
1822	select CPU_MIPSR2
1823	select CPU_SUPPORTS_HUGEPAGES
1824	select MIPS_ASID_BITS_VARIABLE
1825	help
1826	  Netlogic Microsystems XLP processors.
1827endchoice
1828
1829config CPU_MIPS32_3_5_FEATURES
1830	bool "MIPS32 Release 3.5 Features"
1831	depends on SYS_HAS_CPU_MIPS32_R3_5
1832	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1833		   CPU_P5600
1834	help
1835	  Choose this option to build a kernel for release 2 or later of the
1836	  MIPS32 architecture including features from the 3.5 release such as
1837	  support for Enhanced Virtual Addressing (EVA).
1838
1839config CPU_MIPS32_3_5_EVA
1840	bool "Enhanced Virtual Addressing (EVA)"
1841	depends on CPU_MIPS32_3_5_FEATURES
1842	select EVA
1843	default y
1844	help
1845	  Choose this option if you want to enable the Enhanced Virtual
1846	  Addressing (EVA) on your MIPS32 core (such as proAptiv).
1847	  One of its primary benefits is an increase in the maximum size
1848	  of lowmem (up to 3GB). If unsure, say 'N' here.
1849
1850config CPU_MIPS32_R5_FEATURES
1851	bool "MIPS32 Release 5 Features"
1852	depends on SYS_HAS_CPU_MIPS32_R5
1853	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1854	help
1855	  Choose this option to build a kernel for release 2 or later of the
1856	  MIPS32 architecture including features from release 5 such as
1857	  support for Extended Physical Addressing (XPA).
1858
1859config CPU_MIPS32_R5_XPA
1860	bool "Extended Physical Addressing (XPA)"
1861	depends on CPU_MIPS32_R5_FEATURES
1862	depends on !EVA
1863	depends on !PAGE_SIZE_4KB
1864	depends on SYS_SUPPORTS_HIGHMEM
1865	select XPA
1866	select HIGHMEM
1867	select PHYS_ADDR_T_64BIT
1868	default n
1869	help
1870	  Choose this option if you want to enable the Extended Physical
1871	  Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1872	  benefit is to increase physical addressing equal to or greater
1873	  than 40 bits. Note that this has the side effect of turning on
1874	  64-bit addressing which in turn makes the PTEs 64-bit in size.
1875	  If unsure, say 'N' here.
1876
1877if CPU_LOONGSON2F
1878config CPU_NOP_WORKAROUNDS
1879	bool
1880
1881config CPU_JUMP_WORKAROUNDS
1882	bool
1883
1884config CPU_LOONGSON2F_WORKAROUNDS
1885	bool "Loongson 2F Workarounds"
1886	default y
1887	select CPU_NOP_WORKAROUNDS
1888	select CPU_JUMP_WORKAROUNDS
1889	help
1890	  Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1891	  require workarounds.  Without workarounds the system may hang
1892	  unexpectedly.  For more information please refer to the gas
1893	  -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1894
1895	  Loongson 2F03 and later have fixed these issues and no workarounds
1896	  are needed.  The workarounds have no significant side effect on them
1897	  but may decrease the performance of the system so this option should
1898	  be disabled unless the kernel is intended to be run on 2F01 or 2F02
1899	  systems.
1900
1901	  If unsure, please say Y.
1902endif # CPU_LOONGSON2F
1903
1904config SYS_SUPPORTS_ZBOOT
1905	bool
1906	select HAVE_KERNEL_GZIP
1907	select HAVE_KERNEL_BZIP2
1908	select HAVE_KERNEL_LZ4
1909	select HAVE_KERNEL_LZMA
1910	select HAVE_KERNEL_LZO
1911	select HAVE_KERNEL_XZ
1912
1913config SYS_SUPPORTS_ZBOOT_UART16550
1914	bool
1915	select SYS_SUPPORTS_ZBOOT
1916
1917config SYS_SUPPORTS_ZBOOT_UART_PROM
1918	bool
1919	select SYS_SUPPORTS_ZBOOT
1920
1921config CPU_LOONGSON2EF
1922	bool
1923	select CPU_SUPPORTS_32BIT_KERNEL
1924	select CPU_SUPPORTS_64BIT_KERNEL
1925	select CPU_SUPPORTS_HIGHMEM
1926	select CPU_SUPPORTS_HUGEPAGES
1927	select ARCH_HAS_PHYS_TO_DMA
1928
1929config CPU_LOONGSON32
1930	bool
1931	select CPU_MIPS32
1932	select CPU_MIPSR2
1933	select CPU_HAS_PREFETCH
1934	select CPU_SUPPORTS_32BIT_KERNEL
1935	select CPU_SUPPORTS_HIGHMEM
1936	select CPU_SUPPORTS_CPUFREQ
1937
1938config CPU_BMIPS32_3300
1939	select SMP_UP if SMP
1940	bool
1941
1942config CPU_BMIPS4350
1943	bool
1944	select SYS_SUPPORTS_SMP
1945	select SYS_SUPPORTS_HOTPLUG_CPU
1946
1947config CPU_BMIPS4380
1948	bool
1949	select MIPS_L1_CACHE_SHIFT_6
1950	select SYS_SUPPORTS_SMP
1951	select SYS_SUPPORTS_HOTPLUG_CPU
1952	select CPU_HAS_RIXI
1953
1954config CPU_BMIPS5000
1955	bool
1956	select MIPS_CPU_SCACHE
1957	select MIPS_L1_CACHE_SHIFT_7
1958	select SYS_SUPPORTS_SMP
1959	select SYS_SUPPORTS_HOTPLUG_CPU
1960	select CPU_HAS_RIXI
1961
1962config SYS_HAS_CPU_LOONGSON64
1963	bool
1964	select CPU_SUPPORTS_CPUFREQ
1965	select CPU_HAS_RIXI
1966
1967config SYS_HAS_CPU_LOONGSON2E
1968	bool
1969
1970config SYS_HAS_CPU_LOONGSON2F
1971	bool
1972	select CPU_SUPPORTS_CPUFREQ
1973	select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1974
1975config SYS_HAS_CPU_LOONGSON1B
1976	bool
1977
1978config SYS_HAS_CPU_LOONGSON1C
1979	bool
1980
1981config SYS_HAS_CPU_MIPS32_R1
1982	bool
1983
1984config SYS_HAS_CPU_MIPS32_R2
1985	bool
1986
1987config SYS_HAS_CPU_MIPS32_R3_5
1988	bool
1989
1990config SYS_HAS_CPU_MIPS32_R5
1991	bool
1992	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993
1994config SYS_HAS_CPU_MIPS32_R6
1995	bool
1996	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1997
1998config SYS_HAS_CPU_MIPS64_R1
1999	bool
2000
2001config SYS_HAS_CPU_MIPS64_R2
2002	bool
2003
2004config SYS_HAS_CPU_MIPS64_R6
2005	bool
2006	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2007
2008config SYS_HAS_CPU_P5600
2009	bool
2010	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2011
2012config SYS_HAS_CPU_R3000
2013	bool
2014
2015config SYS_HAS_CPU_TX39XX
2016	bool
2017
2018config SYS_HAS_CPU_VR41XX
2019	bool
2020
2021config SYS_HAS_CPU_R4X00
2022	bool
2023
2024config SYS_HAS_CPU_TX49XX
2025	bool
2026
2027config SYS_HAS_CPU_R5000
2028	bool
2029
2030config SYS_HAS_CPU_R5500
2031	bool
2032
2033config SYS_HAS_CPU_NEVADA
2034	bool
2035
2036config SYS_HAS_CPU_R10000
2037	bool
2038	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2039
2040config SYS_HAS_CPU_RM7000
2041	bool
2042
2043config SYS_HAS_CPU_SB1
2044	bool
2045
2046config SYS_HAS_CPU_CAVIUM_OCTEON
2047	bool
2048
2049config SYS_HAS_CPU_BMIPS
2050	bool
2051
2052config SYS_HAS_CPU_BMIPS32_3300
2053	bool
2054	select SYS_HAS_CPU_BMIPS
2055
2056config SYS_HAS_CPU_BMIPS4350
2057	bool
2058	select SYS_HAS_CPU_BMIPS
2059
2060config SYS_HAS_CPU_BMIPS4380
2061	bool
2062	select SYS_HAS_CPU_BMIPS
2063
2064config SYS_HAS_CPU_BMIPS5000
2065	bool
2066	select SYS_HAS_CPU_BMIPS
2067	select ARCH_HAS_SYNC_DMA_FOR_CPU
2068
2069config SYS_HAS_CPU_XLR
2070	bool
2071
2072config SYS_HAS_CPU_XLP
2073	bool
2074
2075#
2076# CPU may reorder R->R, R->W, W->R, W->W
2077# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2078#
2079config WEAK_ORDERING
2080	bool
2081
2082#
2083# CPU may reorder reads and writes beyond LL/SC
2084# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2085#
2086config WEAK_REORDERING_BEYOND_LLSC
2087	bool
2088endmenu
2089
2090#
2091# These two indicate any level of the MIPS32 and MIPS64 architecture
2092#
2093config CPU_MIPS32
2094	bool
2095	default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2096		     CPU_MIPS32_R6 || CPU_P5600
2097
2098config CPU_MIPS64
2099	bool
2100	default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2101		     CPU_MIPS64_R6
2102
2103#
2104# These indicate the revision of the architecture
2105#
2106config CPU_MIPSR1
2107	bool
2108	default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2109
2110config CPU_MIPSR2
2111	bool
2112	default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2113	select CPU_HAS_RIXI
2114	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2115	select MIPS_SPRAM
2116
2117config CPU_MIPSR5
2118	bool
2119	default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2120	select CPU_HAS_RIXI
2121	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2122	select MIPS_SPRAM
2123
2124config CPU_MIPSR6
2125	bool
2126	default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2127	select CPU_HAS_RIXI
2128	select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2129	select HAVE_ARCH_BITREVERSE
2130	select MIPS_ASID_BITS_VARIABLE
2131	select MIPS_CRC_SUPPORT
2132	select MIPS_SPRAM
2133
2134config TARGET_ISA_REV
2135	int
2136	default 1 if CPU_MIPSR1
2137	default 2 if CPU_MIPSR2
2138	default 5 if CPU_MIPSR5
2139	default 6 if CPU_MIPSR6
2140	default 0
2141	help
2142	  Reflects the ISA revision being targeted by the kernel build. This
2143	  is effectively the Kconfig equivalent of MIPS_ISA_REV.
2144
2145config EVA
2146	bool
2147
2148config XPA
2149	bool
2150
2151config SYS_SUPPORTS_32BIT_KERNEL
2152	bool
2153config SYS_SUPPORTS_64BIT_KERNEL
2154	bool
2155config CPU_SUPPORTS_32BIT_KERNEL
2156	bool
2157config CPU_SUPPORTS_64BIT_KERNEL
2158	bool
2159config CPU_SUPPORTS_CPUFREQ
2160	bool
2161config CPU_SUPPORTS_ADDRWINCFG
2162	bool
2163config CPU_SUPPORTS_HUGEPAGES
2164	bool
2165	depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2166config MIPS_PGD_C0_CONTEXT
2167	bool
2168	default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2169
2170#
2171# Set to y for ptrace access to watch registers.
2172#
2173config HARDWARE_WATCHPOINTS
2174	bool
2175	default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2176
2177menu "Kernel type"
2178
2179choice
2180	prompt "Kernel code model"
2181	help
2182	  You should only select this option if you have a workload that
2183	  actually benefits from 64-bit processing or if your machine has
2184	  large memory.  You will only be presented a single option in this
2185	  menu if your system does not support both 32-bit and 64-bit kernels.
2186
2187config 32BIT
2188	bool "32-bit kernel"
2189	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2190	select TRAD_SIGNALS
2191	help
2192	  Select this option if you want to build a 32-bit kernel.
2193
2194config 64BIT
2195	bool "64-bit kernel"
2196	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2197	help
2198	  Select this option if you want to build a 64-bit kernel.
2199
2200endchoice
2201
2202config KVM_GUEST
2203	bool "KVM Guest Kernel"
2204	depends on BROKEN_ON_SMP
2205	help
2206	  Select this option if building a guest kernel for KVM (Trap & Emulate)
2207	  mode.
2208
2209config KVM_GUEST_TIMER_FREQ
2210	int "Count/Compare Timer Frequency (MHz)"
2211	depends on KVM_GUEST
2212	default 100
2213	help
2214	  Set this to non-zero if building a guest kernel for KVM to skip RTC
2215	  emulation when determining guest CPU Frequency. Instead, the guest's
2216	  timer frequency is specified directly.
2217
2218config MIPS_VA_BITS_48
2219	bool "48 bits virtual memory"
2220	depends on 64BIT
2221	help
2222	  Support a maximum at least 48 bits of application virtual
2223	  memory.  Default is 40 bits or less, depending on the CPU.
2224	  For page sizes 16k and above, this option results in a small
2225	  memory overhead for page tables.  For 4k page size, a fourth
2226	  level of page tables is added which imposes both a memory
2227	  overhead as well as slower TLB fault handling.
2228
2229	  If unsure, say N.
2230
2231choice
2232	prompt "Kernel page size"
2233	default PAGE_SIZE_4KB
2234
2235config PAGE_SIZE_4KB
2236	bool "4kB"
2237	depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2238	help
2239	  This option select the standard 4kB Linux page size.  On some
2240	  R3000-family processors this is the only available page size.  Using
2241	  4kB page size will minimize memory consumption and is therefore
2242	  recommended for low memory systems.
2243
2244config PAGE_SIZE_8KB
2245	bool "8kB"
2246	depends on CPU_CAVIUM_OCTEON
2247	depends on !MIPS_VA_BITS_48
2248	help
2249	  Using 8kB page size will result in higher performance kernel at
2250	  the price of higher memory consumption.  This option is available
2251	  only on cnMIPS processors.  Note that you will need a suitable Linux
2252	  distribution to support this.
2253
2254config PAGE_SIZE_16KB
2255	bool "16kB"
2256	depends on !CPU_R3000 && !CPU_TX39XX
2257	help
2258	  Using 16kB page size will result in higher performance kernel at
2259	  the price of higher memory consumption.  This option is available on
2260	  all non-R3000 family processors.  Note that you will need a suitable
2261	  Linux distribution to support this.
2262
2263config PAGE_SIZE_32KB
2264	bool "32kB"
2265	depends on CPU_CAVIUM_OCTEON
2266	depends on !MIPS_VA_BITS_48
2267	help
2268	  Using 32kB page size will result in higher performance kernel at
2269	  the price of higher memory consumption.  This option is available
2270	  only on cnMIPS cores.  Note that you will need a suitable Linux
2271	  distribution to support this.
2272
2273config PAGE_SIZE_64KB
2274	bool "64kB"
2275	depends on !CPU_R3000 && !CPU_TX39XX
2276	help
2277	  Using 64kB page size will result in higher performance kernel at
2278	  the price of higher memory consumption.  This option is available on
2279	  all non-R3000 family processor.  Not that at the time of this
2280	  writing this option is still high experimental.
2281
2282endchoice
2283
2284config FORCE_MAX_ZONEORDER
2285	int "Maximum zone order"
2286	range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2287	default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2288	range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2289	default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2290	range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2291	default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2292	range 11 64
2293	default "11"
2294	help
2295	  The kernel memory allocator divides physically contiguous memory
2296	  blocks into "zones", where each zone is a power of two number of
2297	  pages.  This option selects the largest power of two that the kernel
2298	  keeps in the memory allocator.  If you need to allocate very large
2299	  blocks of physically contiguous memory, then you may need to
2300	  increase this value.
2301
2302	  This config option is actually maximum order plus one. For example,
2303	  a value of 11 means that the largest free memory block is 2^10 pages.
2304
2305	  The page size is not necessarily 4KB.  Keep this in mind
2306	  when choosing a value for this option.
2307
2308config BOARD_SCACHE
2309	bool
2310
2311config IP22_CPU_SCACHE
2312	bool
2313	select BOARD_SCACHE
2314
2315#
2316# Support for a MIPS32 / MIPS64 style S-caches
2317#
2318config MIPS_CPU_SCACHE
2319	bool
2320	select BOARD_SCACHE
2321
2322config R5000_CPU_SCACHE
2323	bool
2324	select BOARD_SCACHE
2325
2326config RM7000_CPU_SCACHE
2327	bool
2328	select BOARD_SCACHE
2329
2330config SIBYTE_DMA_PAGEOPS
2331	bool "Use DMA to clear/copy pages"
2332	depends on CPU_SB1
2333	help
2334	  Instead of using the CPU to zero and copy pages, use a Data Mover
2335	  channel.  These DMA channels are otherwise unused by the standard
2336	  SiByte Linux port.  Seems to give a small performance benefit.
2337
2338config CPU_HAS_PREFETCH
2339	bool
2340
2341config CPU_GENERIC_DUMP_TLB
2342	bool
2343	default y if !(CPU_R3000 || CPU_TX39XX)
2344
2345config MIPS_FP_SUPPORT
2346	bool "Floating Point support" if EXPERT
2347	default y
2348	help
2349	  Select y to include support for floating point in the kernel
2350	  including initialization of FPU hardware, FP context save & restore
2351	  and emulation of an FPU where necessary. Without this support any
2352	  userland program attempting to use floating point instructions will
2353	  receive a SIGILL.
2354
2355	  If you know that your userland will not attempt to use floating point
2356	  instructions then you can say n here to shrink the kernel a little.
2357
2358	  If unsure, say y.
2359
2360config CPU_R2300_FPU
2361	bool
2362	depends on MIPS_FP_SUPPORT
2363	default y if CPU_R3000 || CPU_TX39XX
2364
2365config CPU_R3K_TLB
2366	bool
2367
2368config CPU_R4K_FPU
2369	bool
2370	depends on MIPS_FP_SUPPORT
2371	default y if !CPU_R2300_FPU
2372
2373config CPU_R4K_CACHE_TLB
2374	bool
2375	default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2376
2377config MIPS_MT_SMP
2378	bool "MIPS MT SMP support (1 TC on each available VPE)"
2379	default y
2380	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2381	select CPU_MIPSR2_IRQ_VI
2382	select CPU_MIPSR2_IRQ_EI
2383	select SYNC_R4K
2384	select MIPS_MT
2385	select SMP
2386	select SMP_UP
2387	select SYS_SUPPORTS_SMP
2388	select SYS_SUPPORTS_SCHED_SMT
2389	select MIPS_PERF_SHARED_TC_COUNTERS
2390	help
2391	  This is a kernel model which is known as SMVP. This is supported
2392	  on cores with the MT ASE and uses the available VPEs to implement
2393	  virtual processors which supports SMP. This is equivalent to the
2394	  Intel Hyperthreading feature. For further information go to
2395	  <http://www.imgtec.com/mips/mips-multithreading.asp>.
2396
2397config MIPS_MT
2398	bool
2399
2400config SCHED_SMT
2401	bool "SMT (multithreading) scheduler support"
2402	depends on SYS_SUPPORTS_SCHED_SMT
2403	default n
2404	help
2405	  SMT scheduler support improves the CPU scheduler's decision making
2406	  when dealing with MIPS MT enabled cores at a cost of slightly
2407	  increased overhead in some places. If unsure say N here.
2408
2409config SYS_SUPPORTS_SCHED_SMT
2410	bool
2411
2412config SYS_SUPPORTS_MULTITHREADING
2413	bool
2414
2415config MIPS_MT_FPAFF
2416	bool "Dynamic FPU affinity for FP-intensive threads"
2417	default y
2418	depends on MIPS_MT_SMP
2419
2420config MIPSR2_TO_R6_EMULATOR
2421	bool "MIPS R2-to-R6 emulator"
2422	depends on CPU_MIPSR6
2423	depends on MIPS_FP_SUPPORT
2424	default y
2425	help
2426	  Choose this option if you want to run non-R6 MIPS userland code.
2427	  Even if you say 'Y' here, the emulator will still be disabled by
2428	  default. You can enable it using the 'mipsr2emu' kernel option.
2429	  The only reason this is a build-time option is to save ~14K from the
2430	  final kernel image.
2431
2432config SYS_SUPPORTS_VPE_LOADER
2433	bool
2434	depends on SYS_SUPPORTS_MULTITHREADING
2435	help
2436	  Indicates that the platform supports the VPE loader, and provides
2437	  physical_memsize.
2438
2439config MIPS_VPE_LOADER
2440	bool "VPE loader support."
2441	depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2442	select CPU_MIPSR2_IRQ_VI
2443	select CPU_MIPSR2_IRQ_EI
2444	select MIPS_MT
2445	help
2446	  Includes a loader for loading an elf relocatable object
2447	  onto another VPE and running it.
2448
2449config MIPS_VPE_LOADER_CMP
2450	bool
2451	default "y"
2452	depends on MIPS_VPE_LOADER && MIPS_CMP
2453
2454config MIPS_VPE_LOADER_MT
2455	bool
2456	default "y"
2457	depends on MIPS_VPE_LOADER && !MIPS_CMP
2458
2459config MIPS_VPE_LOADER_TOM
2460	bool "Load VPE program into memory hidden from linux"
2461	depends on MIPS_VPE_LOADER
2462	default y
2463	help
2464	  The loader can use memory that is present but has been hidden from
2465	  Linux using the kernel command line option "mem=xxMB". It's up to
2466	  you to ensure the amount you put in the option and the space your
2467	  program requires is less or equal to the amount physically present.
2468
2469config MIPS_VPE_APSP_API
2470	bool "Enable support for AP/SP API (RTLX)"
2471	depends on MIPS_VPE_LOADER
2472
2473config MIPS_VPE_APSP_API_CMP
2474	bool
2475	default "y"
2476	depends on MIPS_VPE_APSP_API && MIPS_CMP
2477
2478config MIPS_VPE_APSP_API_MT
2479	bool
2480	default "y"
2481	depends on MIPS_VPE_APSP_API && !MIPS_CMP
2482
2483config MIPS_CMP
2484	bool "MIPS CMP framework support (DEPRECATED)"
2485	depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2486	select SMP
2487	select SYNC_R4K
2488	select SYS_SUPPORTS_SMP
2489	select WEAK_ORDERING
2490	default n
2491	help
2492	  Select this if you are using a bootloader which implements the "CMP
2493	  framework" protocol (ie. YAMON) and want your kernel to make use of
2494	  its ability to start secondary CPUs.
2495
2496	  Unless you have a specific need, you should use CONFIG_MIPS_CPS
2497	  instead of this.
2498
2499config MIPS_CPS
2500	bool "MIPS Coherent Processing System support"
2501	depends on SYS_SUPPORTS_MIPS_CPS
2502	select MIPS_CM
2503	select MIPS_CPS_PM if HOTPLUG_CPU
2504	select SMP
2505	select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2506	select SYS_SUPPORTS_HOTPLUG_CPU
2507	select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2508	select SYS_SUPPORTS_SMP
2509	select WEAK_ORDERING
2510	help
2511	  Select this if you wish to run an SMP kernel across multiple cores
2512	  within a MIPS Coherent Processing System. When this option is
2513	  enabled the kernel will probe for other cores and boot them with
2514	  no external assistance. It is safe to enable this when hardware
2515	  support is unavailable.
2516
2517config MIPS_CPS_PM
2518	depends on MIPS_CPS
2519	bool
2520
2521config MIPS_CM
2522	bool
2523	select MIPS_CPC
2524
2525config MIPS_CPC
2526	bool
2527
2528config SB1_PASS_2_WORKAROUNDS
2529	bool
2530	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2531	default y
2532
2533config SB1_PASS_2_1_WORKAROUNDS
2534	bool
2535	depends on CPU_SB1 && CPU_SB1_PASS_2
2536	default y
2537
2538choice
2539	prompt "SmartMIPS or microMIPS ASE support"
2540
2541config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2542	bool "None"
2543	help
2544	  Select this if you want neither microMIPS nor SmartMIPS support
2545
2546config CPU_HAS_SMARTMIPS
2547	depends on SYS_SUPPORTS_SMARTMIPS
2548	bool "SmartMIPS"
2549	help
2550	  SmartMIPS is a extension of the MIPS32 architecture aimed at
2551	  increased security at both hardware and software level for
2552	  smartcards.  Enabling this option will allow proper use of the
2553	  SmartMIPS instructions by Linux applications.  However a kernel with
2554	  this option will not work on a MIPS core without SmartMIPS core.  If
2555	  you don't know you probably don't have SmartMIPS and should say N
2556	  here.
2557
2558config CPU_MICROMIPS
2559	depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2560	bool "microMIPS"
2561	help
2562	  When this option is enabled the kernel will be built using the
2563	  microMIPS ISA
2564
2565endchoice
2566
2567config CPU_HAS_MSA
2568	bool "Support for the MIPS SIMD Architecture"
2569	depends on CPU_SUPPORTS_MSA
2570	depends on MIPS_FP_SUPPORT
2571	depends on 64BIT || MIPS_O32_FP64_SUPPORT
2572	help
2573	  MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2574	  and a set of SIMD instructions to operate on them. When this option
2575	  is enabled the kernel will support allocating & switching MSA
2576	  vector register contexts. If you know that your kernel will only be
2577	  running on CPUs which do not support MSA or that your userland will
2578	  not be making use of it then you may wish to say N here to reduce
2579	  the size & complexity of your kernel.
2580
2581	  If unsure, say Y.
2582
2583config CPU_HAS_WB
2584	bool
2585
2586config XKS01
2587	bool
2588
2589config CPU_HAS_DIEI
2590	depends on !CPU_DIEI_BROKEN
2591	bool
2592
2593config CPU_DIEI_BROKEN
2594	bool
2595
2596config CPU_HAS_RIXI
2597	bool
2598
2599config CPU_NO_LOAD_STORE_LR
2600	bool
2601	help
2602	  CPU lacks support for unaligned load and store instructions:
2603	  LWL, LWR, SWL, SWR (Load/store word left/right).
2604	  LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2605	  systems).
2606
2607#
2608# Vectored interrupt mode is an R2 feature
2609#
2610config CPU_MIPSR2_IRQ_VI
2611	bool
2612
2613#
2614# Extended interrupt mode is an R2 feature
2615#
2616config CPU_MIPSR2_IRQ_EI
2617	bool
2618
2619config CPU_HAS_SYNC
2620	bool
2621	depends on !CPU_R3000
2622	default y
2623
2624#
2625# CPU non-features
2626#
2627config CPU_DADDI_WORKAROUNDS
2628	bool
2629
2630config CPU_R4000_WORKAROUNDS
2631	bool
2632	select CPU_R4400_WORKAROUNDS
2633
2634config CPU_R4400_WORKAROUNDS
2635	bool
2636
2637config CPU_R4X00_BUGS64
2638	bool
2639	default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2640
2641config MIPS_ASID_SHIFT
2642	int
2643	default 6 if CPU_R3000 || CPU_TX39XX
2644	default 0
2645
2646config MIPS_ASID_BITS
2647	int
2648	default 0 if MIPS_ASID_BITS_VARIABLE
2649	default 6 if CPU_R3000 || CPU_TX39XX
2650	default 8
2651
2652config MIPS_ASID_BITS_VARIABLE
2653	bool
2654
2655config MIPS_CRC_SUPPORT
2656	bool
2657
2658#
2659# - Highmem only makes sense for the 32-bit kernel.
2660# - The current highmem code will only work properly on physically indexed
2661#   caches such as R3000, SB1, R7000 or those that look like they're virtually
2662#   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
2663#   moment we protect the user and offer the highmem option only on machines
2664#   where it's known to be safe.  This will not offer highmem on a few systems
2665#   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2666#   indexed CPUs but we're playing safe.
2667# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2668#   know they might have memory configurations that could make use of highmem
2669#   support.
2670#
2671config HIGHMEM
2672	bool "High Memory Support"
2673	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2674
2675config CPU_SUPPORTS_HIGHMEM
2676	bool
2677
2678config SYS_SUPPORTS_HIGHMEM
2679	bool
2680
2681config SYS_SUPPORTS_SMARTMIPS
2682	bool
2683
2684config SYS_SUPPORTS_MICROMIPS
2685	bool
2686
2687config SYS_SUPPORTS_MIPS16
2688	bool
2689	help
2690	  This option must be set if a kernel might be executed on a MIPS16-
2691	  enabled CPU even if MIPS16 is not actually being used.  In other
2692	  words, it makes the kernel MIPS16-tolerant.
2693
2694config CPU_SUPPORTS_MSA
2695	bool
2696
2697config ARCH_FLATMEM_ENABLE
2698	def_bool y
2699	depends on !NUMA && !CPU_LOONGSON2EF
2700
2701config ARCH_SPARSEMEM_ENABLE
2702	bool
2703	select SPARSEMEM_STATIC if !SGI_IP27
2704
2705config NUMA
2706	bool "NUMA Support"
2707	depends on SYS_SUPPORTS_NUMA
2708	help
2709	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2710	  Access).  This option improves performance on systems with more
2711	  than two nodes; on two node systems it is generally better to
2712	  leave it disabled; on single node systems leave this option
2713	  disabled.
2714
2715config SYS_SUPPORTS_NUMA
2716	bool
2717
2718config HAVE_SETUP_PER_CPU_AREA
2719	def_bool y
2720	depends on NUMA
2721
2722config NEED_PER_CPU_EMBED_FIRST_CHUNK
2723	def_bool y
2724	depends on NUMA
2725
2726config RELOCATABLE
2727	bool "Relocatable kernel"
2728	depends on SYS_SUPPORTS_RELOCATABLE
2729	depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2730		   CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2731		   CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2732		   CPU_P5600 || CAVIUM_OCTEON_SOC
2733	help
2734	  This builds a kernel image that retains relocation information
2735	  so it can be loaded someplace besides the default 1MB.
2736	  The relocations make the kernel binary about 15% larger,
2737	  but are discarded at runtime
2738
2739config RELOCATION_TABLE_SIZE
2740	hex "Relocation table size"
2741	depends on RELOCATABLE
2742	range 0x0 0x01000000
2743	default "0x00100000"
2744	---help---
2745	  A table of relocation data will be appended to the kernel binary
2746	  and parsed at boot to fix up the relocated kernel.
2747
2748	  This option allows the amount of space reserved for the table to be
2749	  adjusted, although the default of 1Mb should be ok in most cases.
2750
2751	  The build will fail and a valid size suggested if this is too small.
2752
2753	  If unsure, leave at the default value.
2754
2755config RANDOMIZE_BASE
2756	bool "Randomize the address of the kernel image"
2757	depends on RELOCATABLE
2758	---help---
2759	  Randomizes the physical and virtual address at which the
2760	  kernel image is loaded, as a security feature that
2761	  deters exploit attempts relying on knowledge of the location
2762	  of kernel internals.
2763
2764	  Entropy is generated using any coprocessor 0 registers available.
2765
2766	  The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2767
2768	  If unsure, say N.
2769
2770config RANDOMIZE_BASE_MAX_OFFSET
2771	hex "Maximum kASLR offset" if EXPERT
2772	depends on RANDOMIZE_BASE
2773	range 0x0 0x40000000 if EVA || 64BIT
2774	range 0x0 0x08000000
2775	default "0x01000000"
2776	---help---
2777	  When kASLR is active, this provides the maximum offset that will
2778	  be applied to the kernel image. It should be set according to the
2779	  amount of physical RAM available in the target system minus
2780	  PHYSICAL_START and must be a power of 2.
2781
2782	  This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2783	  EVA or 64-bit. The default is 16Mb.
2784
2785config NODES_SHIFT
2786	int
2787	default "6"
2788	depends on NEED_MULTIPLE_NODES
2789
2790config HW_PERF_EVENTS
2791	bool "Enable hardware performance counter support for perf events"
2792	depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2793	default y
2794	help
2795	  Enable hardware performance counter support for perf events. If
2796	  disabled, perf events will use software events only.
2797
2798config DMI
2799	bool "Enable DMI scanning"
2800	depends on MACH_LOONGSON64
2801	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2802	default y
2803	help
2804	  Enabled scanning of DMI to identify machine quirks. Say Y
2805	  here unless you have verified that your setup is not
2806	  affected by entries in the DMI blacklist. Required by PNP
2807	  BIOS code.
2808
2809config SMP
2810	bool "Multi-Processing support"
2811	depends on SYS_SUPPORTS_SMP
2812	help
2813	  This enables support for systems with more than one CPU. If you have
2814	  a system with only one CPU, say N. If you have a system with more
2815	  than one CPU, say Y.
2816
2817	  If you say N here, the kernel will run on uni- and multiprocessor
2818	  machines, but will use only one CPU of a multiprocessor machine. If
2819	  you say Y here, the kernel will run on many, but not all,
2820	  uniprocessor machines. On a uniprocessor machine, the kernel
2821	  will run faster if you say N here.
2822
2823	  People using multiprocessor machines who say Y here should also say
2824	  Y to "Enhanced Real Time Clock Support", below.
2825
2826	  See also the SMP-HOWTO available at
2827	  <http://www.tldp.org/docs.html#howto>.
2828
2829	  If you don't know what to do here, say N.
2830
2831config HOTPLUG_CPU
2832	bool "Support for hot-pluggable CPUs"
2833	depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2834	help
2835	  Say Y here to allow turning CPUs off and on. CPUs can be
2836	  controlled through /sys/devices/system/cpu.
2837	  (Note: power management support will enable this option
2838	    automatically on SMP systems. )
2839	  Say N if you want to disable CPU hotplug.
2840
2841config SMP_UP
2842	bool
2843
2844config SYS_SUPPORTS_MIPS_CMP
2845	bool
2846
2847config SYS_SUPPORTS_MIPS_CPS
2848	bool
2849
2850config SYS_SUPPORTS_SMP
2851	bool
2852
2853config NR_CPUS_DEFAULT_4
2854	bool
2855
2856config NR_CPUS_DEFAULT_8
2857	bool
2858
2859config NR_CPUS_DEFAULT_16
2860	bool
2861
2862config NR_CPUS_DEFAULT_32
2863	bool
2864
2865config NR_CPUS_DEFAULT_64
2866	bool
2867
2868config NR_CPUS
2869	int "Maximum number of CPUs (2-256)"
2870	range 2 256
2871	depends on SMP
2872	default "4" if NR_CPUS_DEFAULT_4
2873	default "8" if NR_CPUS_DEFAULT_8
2874	default "16" if NR_CPUS_DEFAULT_16
2875	default "32" if NR_CPUS_DEFAULT_32
2876	default "64" if NR_CPUS_DEFAULT_64
2877	help
2878	  This allows you to specify the maximum number of CPUs which this
2879	  kernel will support.  The maximum supported value is 32 for 32-bit
2880	  kernel and 64 for 64-bit kernels; the minimum value which makes
2881	  sense is 1 for Qemu (useful only for kernel debugging purposes)
2882	  and 2 for all others.
2883
2884	  This is purely to save memory - each supported CPU adds
2885	  approximately eight kilobytes to the kernel image.  For best
2886	  performance should round up your number of processors to the next
2887	  power of two.
2888
2889config MIPS_PERF_SHARED_TC_COUNTERS
2890	bool
2891
2892config MIPS_NR_CPU_NR_MAP_1024
2893	bool
2894
2895config MIPS_NR_CPU_NR_MAP
2896	int
2897	depends on SMP
2898	default 1024 if MIPS_NR_CPU_NR_MAP_1024
2899	default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2900
2901#
2902# Timer Interrupt Frequency Configuration
2903#
2904
2905choice
2906	prompt "Timer frequency"
2907	default HZ_250
2908	help
2909	  Allows the configuration of the timer frequency.
2910
2911	config HZ_24
2912		bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2913
2914	config HZ_48
2915		bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2916
2917	config HZ_100
2918		bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2919
2920	config HZ_128
2921		bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2922
2923	config HZ_250
2924		bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2925
2926	config HZ_256
2927		bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2928
2929	config HZ_1000
2930		bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2931
2932	config HZ_1024
2933		bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2934
2935endchoice
2936
2937config SYS_SUPPORTS_24HZ
2938	bool
2939
2940config SYS_SUPPORTS_48HZ
2941	bool
2942
2943config SYS_SUPPORTS_100HZ
2944	bool
2945
2946config SYS_SUPPORTS_128HZ
2947	bool
2948
2949config SYS_SUPPORTS_250HZ
2950	bool
2951
2952config SYS_SUPPORTS_256HZ
2953	bool
2954
2955config SYS_SUPPORTS_1000HZ
2956	bool
2957
2958config SYS_SUPPORTS_1024HZ
2959	bool
2960
2961config SYS_SUPPORTS_ARBIT_HZ
2962	bool
2963	default y if !SYS_SUPPORTS_24HZ && \
2964		     !SYS_SUPPORTS_48HZ && \
2965		     !SYS_SUPPORTS_100HZ && \
2966		     !SYS_SUPPORTS_128HZ && \
2967		     !SYS_SUPPORTS_250HZ && \
2968		     !SYS_SUPPORTS_256HZ && \
2969		     !SYS_SUPPORTS_1000HZ && \
2970		     !SYS_SUPPORTS_1024HZ
2971
2972config HZ
2973	int
2974	default 24 if HZ_24
2975	default 48 if HZ_48
2976	default 100 if HZ_100
2977	default 128 if HZ_128
2978	default 250 if HZ_250
2979	default 256 if HZ_256
2980	default 1000 if HZ_1000
2981	default 1024 if HZ_1024
2982
2983config SCHED_HRTICK
2984	def_bool HIGH_RES_TIMERS
2985
2986config KEXEC
2987	bool "Kexec system call"
2988	select KEXEC_CORE
2989	help
2990	  kexec is a system call that implements the ability to shutdown your
2991	  current kernel, and to start another kernel.  It is like a reboot
2992	  but it is independent of the system firmware.   And like a reboot
2993	  you can start any kernel with it, not just Linux.
2994
2995	  The name comes from the similarity to the exec system call.
2996
2997	  It is an ongoing process to be certain the hardware in a machine
2998	  is properly shutdown, so do not be surprised if this code does not
2999	  initially work for you.  As of this writing the exact hardware
3000	  interface is strongly in flux, so no good recommendation can be
3001	  made.
3002
3003config CRASH_DUMP
3004	bool "Kernel crash dumps"
3005	help
3006	  Generate crash dump after being started by kexec.
3007	  This should be normally only set in special crash dump kernels
3008	  which are loaded in the main kernel with kexec-tools into
3009	  a specially reserved region and then later executed after
3010	  a crash by kdump/kexec. The crash dump kernel must be compiled
3011	  to a memory address not used by the main kernel or firmware using
3012	  PHYSICAL_START.
3013
3014config PHYSICAL_START
3015	hex "Physical address where the kernel is loaded"
3016	default "0xffffffff84000000"
3017	depends on CRASH_DUMP
3018	help
3019	  This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3020	  If you plan to use kernel for capturing the crash dump change
3021	  this value to start of the reserved region (the "X" value as
3022	  specified in the "crashkernel=YM@XM" command line boot parameter
3023	  passed to the panic-ed kernel).
3024
3025config SECCOMP
3026	bool "Enable seccomp to safely compute untrusted bytecode"
3027	depends on PROC_FS
3028	default y
3029	help
3030	  This kernel feature is useful for number crunching applications
3031	  that may need to compute untrusted bytecode during their
3032	  execution. By using pipes or other transports made available to
3033	  the process as file descriptors supporting the read/write
3034	  syscalls, it's possible to isolate those applications in
3035	  their own address space using seccomp. Once seccomp is
3036	  enabled via /proc/<pid>/seccomp, it cannot be disabled
3037	  and the task is only allowed to execute a few safe syscalls
3038	  defined by each seccomp mode.
3039
3040	  If unsure, say Y. Only embedded should say N here.
3041
3042config MIPS_O32_FP64_SUPPORT
3043	bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3044	depends on 32BIT || MIPS32_O32
3045	help
3046	  When this is enabled, the kernel will support use of 64-bit floating
3047	  point registers with binaries using the O32 ABI along with the
3048	  EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3049	  32-bit MIPS systems this support is at the cost of increasing the
3050	  size and complexity of the compiled FPU emulator. Thus if you are
3051	  running a MIPS32 system and know that none of your userland binaries
3052	  will require 64-bit floating point, you may wish to reduce the size
3053	  of your kernel & potentially improve FP emulation performance by
3054	  saying N here.
3055
3056	  Although binutils currently supports use of this flag the details
3057	  concerning its effect upon the O32 ABI in userland are still being
3058	  worked on. In order to avoid userland becoming dependant upon current
3059	  behaviour before the details have been finalised, this option should
3060	  be considered experimental and only enabled by those working upon
3061	  said details.
3062
3063	  If unsure, say N.
3064
3065config USE_OF
3066	bool
3067	select OF
3068	select OF_EARLY_FLATTREE
3069	select IRQ_DOMAIN
3070
3071config UHI_BOOT
3072	bool
3073
3074config BUILTIN_DTB
3075	bool
3076
3077choice
3078	prompt "Kernel appended dtb support" if USE_OF
3079	default MIPS_NO_APPENDED_DTB
3080
3081	config MIPS_NO_APPENDED_DTB
3082		bool "None"
3083		help
3084		  Do not enable appended dtb support.
3085
3086	config MIPS_ELF_APPENDED_DTB
3087		bool "vmlinux"
3088		help
3089		  With this option, the boot code will look for a device tree binary
3090		  DTB) included in the vmlinux ELF section .appended_dtb. By default
3091		  it is empty and the DTB can be appended using binutils command
3092		  objcopy:
3093
3094		    objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3095
3096		  This is meant as a backward compatiblity convenience for those
3097		  systems with a bootloader that can't be upgraded to accommodate
3098		  the documented boot protocol using a device tree.
3099
3100	config MIPS_RAW_APPENDED_DTB
3101		bool "vmlinux.bin or vmlinuz.bin"
3102		help
3103		  With this option, the boot code will look for a device tree binary
3104		  DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3105		  (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3106
3107		  This is meant as a backward compatibility convenience for those
3108		  systems with a bootloader that can't be upgraded to accommodate
3109		  the documented boot protocol using a device tree.
3110
3111		  Beware that there is very little in terms of protection against
3112		  this option being confused by leftover garbage in memory that might
3113		  look like a DTB header after a reboot if no actual DTB is appended
3114		  to vmlinux.bin.  Do not leave this option active in a production kernel
3115		  if you don't intend to always append a DTB.
3116endchoice
3117
3118choice
3119	prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3120	default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3121					 !MACH_LOONGSON64 && !MIPS_MALTA && \
3122					 !CAVIUM_OCTEON_SOC
3123	default MIPS_CMDLINE_FROM_BOOTLOADER
3124
3125	config MIPS_CMDLINE_FROM_DTB
3126		depends on USE_OF
3127		bool "Dtb kernel arguments if available"
3128
3129	config MIPS_CMDLINE_DTB_EXTEND
3130		depends on USE_OF
3131		bool "Extend dtb kernel arguments with bootloader arguments"
3132
3133	config MIPS_CMDLINE_FROM_BOOTLOADER
3134		bool "Bootloader kernel arguments if available"
3135
3136	config MIPS_CMDLINE_BUILTIN_EXTEND
3137		depends on CMDLINE_BOOL
3138		bool "Extend builtin kernel arguments with bootloader arguments"
3139endchoice
3140
3141endmenu
3142
3143config LOCKDEP_SUPPORT
3144	bool
3145	default y
3146
3147config STACKTRACE_SUPPORT
3148	bool
3149	default y
3150
3151config PGTABLE_LEVELS
3152	int
3153	default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3154	default 3 if 64BIT && !PAGE_SIZE_64KB
3155	default 2
3156
3157config MIPS_AUTO_PFN_OFFSET
3158	bool
3159
3160menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3161
3162config PCI_DRIVERS_GENERIC
3163	select PCI_DOMAINS_GENERIC if PCI
3164	bool
3165
3166config PCI_DRIVERS_LEGACY
3167	def_bool !PCI_DRIVERS_GENERIC
3168	select NO_GENERIC_PCI_IOPORT_MAP
3169	select PCI_DOMAINS if PCI
3170
3171#
3172# ISA support is now enabled via select.  Too many systems still have the one
3173# or other ISA chip on the board that users don't know about so don't expect
3174# users to choose the right thing ...
3175#
3176config ISA
3177	bool
3178
3179config TC
3180	bool "TURBOchannel support"
3181	depends on MACH_DECSTATION
3182	help
3183	  TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3184	  processors.  TURBOchannel programming specifications are available
3185	  at:
3186	  <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3187	  and:
3188	  <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3189	  Linux driver support status is documented at:
3190	  <http://www.linux-mips.org/wiki/DECstation>
3191
3192config MMU
3193	bool
3194	default y
3195
3196config ARCH_MMAP_RND_BITS_MIN
3197	default 12 if 64BIT
3198	default 8
3199
3200config ARCH_MMAP_RND_BITS_MAX
3201	default 18 if 64BIT
3202	default 15
3203
3204config ARCH_MMAP_RND_COMPAT_BITS_MIN
3205	default 8
3206
3207config ARCH_MMAP_RND_COMPAT_BITS_MAX
3208	default 15
3209
3210config I8253
3211	bool
3212	select CLKSRC_I8253
3213	select CLKEVT_I8253
3214	select MIPS_EXTERNAL_TIMER
3215
3216config ZONE_DMA
3217	bool
3218
3219config ZONE_DMA32
3220	bool
3221
3222endmenu
3223
3224config TRAD_SIGNALS
3225	bool
3226
3227config MIPS32_COMPAT
3228	bool
3229
3230config COMPAT
3231	bool
3232
3233config SYSVIPC_COMPAT
3234	bool
3235
3236config MIPS32_O32
3237	bool "Kernel support for o32 binaries"
3238	depends on 64BIT
3239	select ARCH_WANT_OLD_COMPAT_IPC
3240	select COMPAT
3241	select MIPS32_COMPAT
3242	select SYSVIPC_COMPAT if SYSVIPC
3243	help
3244	  Select this option if you want to run o32 binaries.  These are pure
3245	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
3246	  existing binaries are in this format.
3247
3248	  If unsure, say Y.
3249
3250config MIPS32_N32
3251	bool "Kernel support for n32 binaries"
3252	depends on 64BIT
3253	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3254	select COMPAT
3255	select MIPS32_COMPAT
3256	select SYSVIPC_COMPAT if SYSVIPC
3257	help
3258	  Select this option if you want to run n32 binaries.  These are
3259	  64-bit binaries using 32-bit quantities for addressing and certain
3260	  data that would normally be 64-bit.  They are used in special
3261	  cases.
3262
3263	  If unsure, say N.
3264
3265config BINFMT_ELF32
3266	bool
3267	default y if MIPS32_O32 || MIPS32_N32
3268	select ELFCORE
3269
3270menu "Power management options"
3271
3272config ARCH_HIBERNATION_POSSIBLE
3273	def_bool y
3274	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3275
3276config ARCH_SUSPEND_POSSIBLE
3277	def_bool y
3278	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3279
3280source "kernel/power/Kconfig"
3281
3282endmenu
3283
3284config MIPS_EXTERNAL_TIMER
3285	bool
3286
3287menu "CPU Power Management"
3288
3289if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3290source "drivers/cpufreq/Kconfig"
3291endif
3292
3293source "drivers/cpuidle/Kconfig"
3294
3295endmenu
3296
3297source "drivers/firmware/Kconfig"
3298
3299source "arch/mips/kvm/Kconfig"
3300
3301source "arch/mips/vdso/Kconfig"
3302