1config MIPS
   2	bool
   3	default y
 
 
 
 
 
 
   4	select HAVE_GENERIC_DMA_COHERENT
   5	select HAVE_IDE
 
   6	select HAVE_OPROFILE
   7	select HAVE_IRQ_WORK
   8	select HAVE_PERF_EVENTS
   9	select PERF_USE_VMALLOC
  10	select HAVE_ARCH_KGDB
 
 
 
  11	select HAVE_FUNCTION_TRACER
  12	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  13	select HAVE_DYNAMIC_FTRACE
  14	select HAVE_FTRACE_MCOUNT_RECORD
  15	select HAVE_C_RECORDMCOUNT
  16	select HAVE_FUNCTION_GRAPH_TRACER
  17	select HAVE_KPROBES
  18	select HAVE_KRETPROBES
  19	select RTC_LIB if !MACH_LOONGSON
 
 
 
 
 
  20	select GENERIC_ATOMIC64 if !64BIT
  21	select HAVE_DMA_ATTRS
  22	select HAVE_DMA_API_DEBUG
  23	select HAVE_GENERIC_HARDIRQS
  24	select GENERIC_IRQ_PROBE
  25	select GENERIC_IRQ_SHOW
 
  26	select HAVE_ARCH_JUMP_LABEL
 
  27	select IRQ_FORCED_THREADING
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  28
  29menu "Machine selection"
  30
  31config ZONE_DMA
  32	bool
  33
  34choice
  35	prompt "System type"
  36	default SGI_IP22
  37
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  38config MIPS_ALCHEMY
  39	bool "Alchemy processor based machines"
  40	select 64BIT_PHYS_ADDR
  41	select CEVT_R4K_LIB
  42	select CSRC_R4K_LIB
  43	select IRQ_CPU
 
  44	select SYS_HAS_CPU_MIPS32_R1
  45	select SYS_SUPPORTS_32BIT_KERNEL
  46	select SYS_SUPPORTS_APM_EMULATION
  47	select GENERIC_GPIO
  48	select ARCH_WANT_OPTIONAL_GPIOLIB
  49	select SYS_SUPPORTS_ZBOOT
 
  50
  51config AR7
  52	bool "Texas Instruments AR7"
  53	select BOOT_ELF32
  54	select DMA_NONCOHERENT
  55	select CEVT_R4K
  56	select CSRC_R4K
  57	select IRQ_CPU
  58	select NO_EXCEPT_FILL
  59	select SWAP_IO_SPACE
  60	select SYS_HAS_CPU_MIPS32_R1
  61	select SYS_HAS_EARLY_PRINTK
  62	select SYS_SUPPORTS_32BIT_KERNEL
  63	select SYS_SUPPORTS_LITTLE_ENDIAN
 
  64	select SYS_SUPPORTS_ZBOOT_UART16550
  65	select ARCH_REQUIRE_GPIOLIB
  66	select GCD
  67	select VLYNQ
 
  68	help
  69	  Support for the Texas Instruments AR7 System-on-a-Chip
  70	  family: TNETD7100, 7200 and 7300.
  71
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  72config ATH79
  73	bool "Atheros AR71XX/AR724X/AR913X based boards"
  74	select ARCH_REQUIRE_GPIOLIB
  75	select BOOT_RAW
  76	select CEVT_R4K
  77	select CSRC_R4K
  78	select DMA_NONCOHERENT
  79	select IRQ_CPU
 
 
 
 
  80	select MIPS_MACHINE
  81	select SYS_HAS_CPU_MIPS32_R2
  82	select SYS_HAS_EARLY_PRINTK
  83	select SYS_SUPPORTS_32BIT_KERNEL
  84	select SYS_SUPPORTS_BIG_ENDIAN
 
 
 
  85	help
  86	  Support for the Atheros AR71XX/AR724X/AR913X SoCs.
  87
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  88config BCM47XX
  89	bool "Broadcom BCM47XX based boards"
 
  90	select CEVT_R4K
  91	select CSRC_R4K
  92	select DMA_NONCOHERENT
  93	select HW_HAS_PCI
  94	select IRQ_CPU
  95	select SYS_HAS_CPU_MIPS32_R1
 
  96	select SYS_SUPPORTS_32BIT_KERNEL
  97	select SYS_SUPPORTS_LITTLE_ENDIAN
  98	select SSB
  99	select SSB_DRIVER_MIPS
 100	select SSB_DRIVER_EXTIF
 101	select SSB_EMBEDDED
 102	select SSB_B43_PCI_BRIDGE if PCI
 103	select SSB_PCICORE_HOSTMODE if PCI
 104	select GENERIC_GPIO
 105	select SYS_HAS_EARLY_PRINTK
 106	select CFE
 
 
 
 
 107	help
 108	 Support for BCM47XX based boards
 109
 110config BCM63XX
 111	bool "Broadcom BCM63XX based boards"
 
 112	select CEVT_R4K
 113	select CSRC_R4K
 
 114	select DMA_NONCOHERENT
 115	select IRQ_CPU
 116	select SYS_HAS_CPU_MIPS32_R1
 117	select SYS_SUPPORTS_32BIT_KERNEL
 118	select SYS_SUPPORTS_BIG_ENDIAN
 119	select SYS_HAS_EARLY_PRINTK
 120	select SWAP_IO_SPACE
 121	select ARCH_REQUIRE_GPIOLIB
 
 
 122	help
 123	 Support for BCM63XX based boards
 124
 125config MIPS_COBALT
 126	bool "Cobalt Server"
 127	select CEVT_R4K
 128	select CSRC_R4K
 129	select CEVT_GT641XX
 130	select DMA_NONCOHERENT
 131	select HW_HAS_PCI
 132	select I8253
 133	select I8259
 134	select IRQ_CPU
 135	select IRQ_GT641XX
 136	select PCI_GT64XXX_PCI0
 137	select PCI
 138	select SYS_HAS_CPU_NEVADA
 139	select SYS_HAS_EARLY_PRINTK
 140	select SYS_SUPPORTS_32BIT_KERNEL
 141	select SYS_SUPPORTS_64BIT_KERNEL
 142	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 143
 144config MACH_DECSTATION
 145	bool "DECstations"
 146	select BOOT_ELF32
 147	select CEVT_DS1287
 148	select CEVT_R4K
 149	select CSRC_IOASIC
 150	select CSRC_R4K
 151	select CPU_DADDI_WORKAROUNDS if 64BIT
 152	select CPU_R4000_WORKAROUNDS if 64BIT
 153	select CPU_R4400_WORKAROUNDS if 64BIT
 154	select DMA_NONCOHERENT
 155	select NO_IOPORT
 156	select IRQ_CPU
 157	select SYS_HAS_CPU_R3000
 158	select SYS_HAS_CPU_R4X00
 159	select SYS_SUPPORTS_32BIT_KERNEL
 160	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 161	select SYS_SUPPORTS_LITTLE_ENDIAN
 162	select SYS_SUPPORTS_128HZ
 163	select SYS_SUPPORTS_256HZ
 164	select SYS_SUPPORTS_1024HZ
 
 165	help
 166	  This enables support for DEC's MIPS based workstations.  For details
 167	  see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
 168	  DECstation porting pages on <http://decstation.unix-ag.org/>.
 169
 170	  If you have one of the following DECstation Models you definitely
 171	  want to choose R4xx0 for the CPU Type:
 172
 173		DECstation 5000/50
 174		DECstation 5000/150
 175		DECstation 5000/260
 176		DECsystem 5900/260
 177
 178	  otherwise choose R3000.
 179
 180config MACH_JAZZ
 181	bool "Jazz family of machines"
 182	select ARC
 183	select ARC32
 184	select ARCH_MAY_HAVE_PC_FDC
 185	select CEVT_R4K
 186	select CSRC_R4K
 187	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
 188	select GENERIC_ISA_DMA
 189	select HAVE_PCSPKR_PLATFORM
 190	select IRQ_CPU
 191	select I8253
 192	select I8259
 193	select ISA
 194	select SYS_HAS_CPU_R4X00
 195	select SYS_SUPPORTS_32BIT_KERNEL
 196	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 197	select SYS_SUPPORTS_100HZ
 198	help
 199	 This a family of machines based on the MIPS R4030 chipset which was
 200	 used by several vendors to build RISC/os and Windows NT workstations.
 201	 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
 202	 Olivetti M700-10 workstations.
 203
 204config MACH_JZ4740
 205	bool "Ingenic JZ4740 based machines"
 206	select SYS_HAS_CPU_MIPS32_R1
 207	select SYS_SUPPORTS_32BIT_KERNEL
 208	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 209	select DMA_NONCOHERENT
 210	select IRQ_CPU
 211	select GENERIC_GPIO
 212	select ARCH_REQUIRE_GPIOLIB
 213	select SYS_HAS_EARLY_PRINTK
 214	select HAVE_PWM
 215	select HAVE_CLK
 
 216
 217config LANTIQ
 218	bool "Lantiq based platforms"
 219	select DMA_NONCOHERENT
 220	select IRQ_CPU
 221	select CEVT_R4K
 222	select CSRC_R4K
 223	select SYS_HAS_CPU_MIPS32_R1
 224	select SYS_HAS_CPU_MIPS32_R2
 225	select SYS_SUPPORTS_BIG_ENDIAN
 226	select SYS_SUPPORTS_32BIT_KERNEL
 
 227	select SYS_SUPPORTS_MULTITHREADING
 228	select SYS_HAS_EARLY_PRINTK
 229	select ARCH_REQUIRE_GPIOLIB
 230	select SWAP_IO_SPACE
 231	select BOOT_RAW
 232	select HAVE_CLK
 233	select MIPS_MACHINE
 
 
 
 
 234
 235config LASAT
 236	bool "LASAT Networks platforms"
 237	select CEVT_R4K
 
 238	select CSRC_R4K
 239	select DMA_NONCOHERENT
 240	select SYS_HAS_EARLY_PRINTK
 241	select HW_HAS_PCI
 242	select IRQ_CPU
 243	select PCI_GT64XXX_PCI0
 244	select MIPS_NILE4
 245	select R5000_CPU_SCACHE
 246	select SYS_HAS_CPU_R5000
 247	select SYS_SUPPORTS_32BIT_KERNEL
 248	select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
 249	select SYS_SUPPORTS_LITTLE_ENDIAN
 250
 251config MACH_LOONGSON
 252	bool "Loongson family of machines"
 
 
 
 
 
 
 
 
 
 
 253	select SYS_SUPPORTS_ZBOOT
 254	help
 255	  This enables the support of Loongson family of machines.
 256
 257	  Loongson is a family of general-purpose MIPS-compatible CPUs.
 258	  developed at Institute of Computing Technology (ICT),
 259	  Chinese Academy of Sciences (CAS) in the People's Republic
 260	  of China. The chief architect is Professor Weiwu Hu.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 261
 262config MIPS_MALTA
 263	bool "MIPS Malta board"
 264	select ARCH_MAY_HAVE_PC_FDC
 265	select BOOT_ELF32
 266	select BOOT_RAW
 
 267	select CEVT_R4K
 268	select CSRC_R4K
 269	select DMA_NONCOHERENT
 
 
 270	select GENERIC_ISA_DMA
 271	select HAVE_PCSPKR_PLATFORM
 272	select IRQ_CPU
 273	select IRQ_GIC
 274	select HW_HAS_PCI
 275	select I8253
 276	select I8259
 277	select MIPS_BOARDS_GEN
 278	select MIPS_BONITO64
 279	select MIPS_CPU_SCACHE
 
 280	select PCI_GT64XXX_PCI0
 281	select MIPS_MSC
 
 282	select SWAP_IO_SPACE
 283	select SYS_HAS_CPU_MIPS32_R1
 284	select SYS_HAS_CPU_MIPS32_R2
 
 
 
 285	select SYS_HAS_CPU_MIPS64_R1
 
 
 286	select SYS_HAS_CPU_NEVADA
 287	select SYS_HAS_CPU_RM7000
 288	select SYS_HAS_EARLY_PRINTK
 289	select SYS_SUPPORTS_32BIT_KERNEL
 290	select SYS_SUPPORTS_64BIT_KERNEL
 291	select SYS_SUPPORTS_BIG_ENDIAN
 
 292	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 293	select SYS_SUPPORTS_MIPS_CMP
 
 
 294	select SYS_SUPPORTS_MULTITHREADING
 295	select SYS_SUPPORTS_SMARTMIPS
 296	select SYS_SUPPORTS_ZBOOT
 
 
 
 
 
 
 297	help
 298	  This enables support for the MIPS Technologies Malta evaluation
 299	  board.
 300
 301config MIPS_SIM
 302	bool 'MIPS simulator (MIPSsim)'
 303	select CEVT_R4K
 304	select CSRC_R4K
 305	select DMA_NONCOHERENT
 306	select SYS_HAS_EARLY_PRINTK
 307	select IRQ_CPU
 308	select BOOT_RAW
 309	select SYS_HAS_CPU_MIPS32_R1
 310	select SYS_HAS_CPU_MIPS32_R2
 311	select SYS_HAS_EARLY_PRINTK
 312	select SYS_SUPPORTS_32BIT_KERNEL
 313	select SYS_SUPPORTS_BIG_ENDIAN
 314	select SYS_SUPPORTS_MULTITHREADING
 315	select SYS_SUPPORTS_LITTLE_ENDIAN
 316	help
 317	  This option enables support for MIPS Technologies MIPSsim software
 318	  emulator.
 
 
 319
 320config NEC_MARKEINS
 321	bool "NEC EMMA2RH Mark-eins board"
 322	select SOC_EMMA2RH
 323	select HW_HAS_PCI
 324	help
 325	  This enables support for the NEC Electronics Mark-eins boards.
 326
 327config MACH_VR41XX
 328	bool "NEC VR4100 series based machines"
 329	select CEVT_R4K
 330	select CSRC_R4K
 331	select SYS_HAS_CPU_VR41XX
 332	select ARCH_REQUIRE_GPIOLIB
 
 333
 334config NXP_STB220
 335	bool "NXP STB220 board"
 336	select SOC_PNX833X
 337	help
 338	 Support for NXP Semiconductors STB220 Development Board.
 339
 340config NXP_STB225
 341	bool "NXP 225 board"
 342	select SOC_PNX833X
 343	select SOC_PNX8335
 344	help
 345	 Support for NXP Semiconductors STB225 Development Board.
 346
 347config PNX8550_JBS
 348	bool "NXP PNX8550 based JBS board"
 349	select PNX8550
 350	select SYS_SUPPORTS_LITTLE_ENDIAN
 351
 352config PNX8550_STB810
 353	bool "NXP PNX8550 based STB810 board"
 354	select PNX8550
 355	select SYS_SUPPORTS_LITTLE_ENDIAN
 356
 357config PMC_MSP
 358	bool "PMC-Sierra MSP chipsets"
 359	depends on EXPERIMENTAL
 360	select CEVT_R4K
 361	select CSRC_R4K
 362	select DMA_NONCOHERENT
 363	select SWAP_IO_SPACE
 364	select NO_EXCEPT_FILL
 365	select BOOT_RAW
 366	select SYS_HAS_CPU_MIPS32_R1
 367	select SYS_HAS_CPU_MIPS32_R2
 368	select SYS_SUPPORTS_32BIT_KERNEL
 369	select SYS_SUPPORTS_BIG_ENDIAN
 370	select IRQ_CPU
 
 371	select SERIAL_8250
 372	select SERIAL_8250_CONSOLE
 
 
 373	help
 374	  This adds support for the PMC-Sierra family of Multi-Service
 375	  Processor System-On-A-Chips.  These parts include a number
 376	  of integrated peripherals, interfaces and DSPs in addition to
 377	  a variety of MIPS cores.
 378
 379config PMC_YOSEMITE
 380	bool "PMC-Sierra Yosemite eval board"
 381	select CEVT_R4K
 382	select CSRC_R4K
 383	select DMA_COHERENT
 384	select HW_HAS_PCI
 385	select IRQ_CPU
 386	select IRQ_CPU_RM7K
 387	select IRQ_CPU_RM9K
 388	select SWAP_IO_SPACE
 389	select SYS_HAS_CPU_RM9000
 390	select SYS_HAS_EARLY_PRINTK
 391	select SYS_SUPPORTS_32BIT_KERNEL
 392	select SYS_SUPPORTS_64BIT_KERNEL
 393	select SYS_SUPPORTS_BIG_ENDIAN
 394	select SYS_SUPPORTS_HIGHMEM
 395	select SYS_SUPPORTS_SMP
 396	help
 397	  Yosemite is an evaluation board for the RM9000x2 processor
 398	  manufactured by PMC-Sierra.
 399
 400config POWERTV
 401	bool "Cisco PowerTV"
 402	select BOOT_ELF32
 403	select CEVT_R4K
 404	select CPU_MIPSR2_IRQ_VI
 405	select CPU_MIPSR2_IRQ_EI
 406	select CSRC_POWERTV
 407	select DMA_NONCOHERENT
 408	select HW_HAS_PCI
 409	select SYS_HAS_EARLY_PRINTK
 
 410	select SYS_HAS_CPU_MIPS32_R2
 411	select SYS_SUPPORTS_32BIT_KERNEL
 412	select SYS_SUPPORTS_BIG_ENDIAN
 413	select SYS_SUPPORTS_HIGHMEM
 414	select USB_OHCI_LITTLE_ENDIAN
 415	help
 416	  This enables support for the Cisco PowerTV Platform.
 
 417
 418config SGI_IP22
 419	bool "SGI IP22 (Indy/Indigo2)"
 420	select ARC
 421	select ARC32
 422	select BOOT_ELF32
 423	select CEVT_R4K
 424	select CSRC_R4K
 425	select DEFAULT_SGI_PARTITION
 426	select DMA_NONCOHERENT
 427	select HW_HAS_EISA
 428	select I8253
 429	select I8259
 430	select IP22_CPU_SCACHE
 431	select IRQ_CPU
 432	select GENERIC_ISA_DMA_SUPPORT_BROKEN
 433	select SGI_HAS_I8042
 434	select SGI_HAS_INDYDOG
 435	select SGI_HAS_HAL2
 436	select SGI_HAS_SEEQ
 437	select SGI_HAS_WD93
 438	select SGI_HAS_ZILOG
 439	select SWAP_IO_SPACE
 440	select SYS_HAS_CPU_R4X00
 441	select SYS_HAS_CPU_R5000
 442	#
 443	# Disable EARLY_PRINTK for now since it leads to overwritten prom
 444	# memory during early boot on some machines.
 445	#
 446	# See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
 447	# for a more details discussion
 448	#
 449	# select SYS_HAS_EARLY_PRINTK
 450	select SYS_SUPPORTS_32BIT_KERNEL
 451	select SYS_SUPPORTS_64BIT_KERNEL
 452	select SYS_SUPPORTS_BIG_ENDIAN
 
 453	help
 454	  This are the SGI Indy, Challenge S and Indigo2, as well as certain
 455	  OEM variants like the Tandem CMN B006S. To compile a Linux kernel
 456	  that runs on these, say Y here.
 457
 458config SGI_IP27
 459	bool "SGI IP27 (Origin200/2000)"
 460	select ARC
 461	select ARC64
 462	select BOOT_ELF64
 463	select DEFAULT_SGI_PARTITION
 464	select DMA_COHERENT
 465	select SYS_HAS_EARLY_PRINTK
 466	select HW_HAS_PCI
 467	select NR_CPUS_DEFAULT_64
 468	select SYS_HAS_CPU_R10000
 469	select SYS_SUPPORTS_64BIT_KERNEL
 470	select SYS_SUPPORTS_BIG_ENDIAN
 471	select SYS_SUPPORTS_NUMA
 472	select SYS_SUPPORTS_SMP
 
 473	help
 474	  This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
 475	  workstations.  To compile a Linux kernel that runs on these, say Y
 476	  here.
 477
 478config SGI_IP28
 479	bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
 480	depends on EXPERIMENTAL
 481	select ARC
 482	select ARC64
 483	select BOOT_ELF64
 484	select CEVT_R4K
 485	select CSRC_R4K
 486	select DEFAULT_SGI_PARTITION
 487	select DMA_NONCOHERENT
 488	select GENERIC_ISA_DMA_SUPPORT_BROKEN
 489	select IRQ_CPU
 490	select HW_HAS_EISA
 491	select I8253
 492	select I8259
 493	select SGI_HAS_I8042
 494	select SGI_HAS_INDYDOG
 495	select SGI_HAS_HAL2
 496	select SGI_HAS_SEEQ
 497	select SGI_HAS_WD93
 498	select SGI_HAS_ZILOG
 499	select SWAP_IO_SPACE
 500	select SYS_HAS_CPU_R10000
 501	#
 502	# Disable EARLY_PRINTK for now since it leads to overwritten prom
 503	# memory during early boot on some machines.
 504	#
 505	# See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
 506	# for a more details discussion
 507	#
 508	# select SYS_HAS_EARLY_PRINTK
 509	select SYS_SUPPORTS_64BIT_KERNEL
 510	select SYS_SUPPORTS_BIG_ENDIAN
 
 511      help
 512        This is the SGI Indigo2 with R10000 processor.  To compile a Linux
 513        kernel that runs on these, say Y here.
 514
 515config SGI_IP32
 516	bool "SGI IP32 (O2)"
 517	select ARC
 518	select ARC32
 519	select BOOT_ELF32
 520	select CEVT_R4K
 521	select CSRC_R4K
 522	select DMA_NONCOHERENT
 523	select HW_HAS_PCI
 524	select IRQ_CPU
 525	select R5000_CPU_SCACHE
 526	select RM7000_CPU_SCACHE
 527	select SYS_HAS_CPU_R5000
 528	select SYS_HAS_CPU_R10000 if BROKEN
 529	select SYS_HAS_CPU_RM7000
 530	select SYS_HAS_CPU_NEVADA
 531	select SYS_SUPPORTS_64BIT_KERNEL
 532	select SYS_SUPPORTS_BIG_ENDIAN
 533	help
 534	  If you want this kernel to run on SGI O2 workstation, say Y here.
 535
 536config SIBYTE_CRHINE
 537	bool "Sibyte BCM91120C-CRhine"
 538	depends on EXPERIMENTAL
 539	select BOOT_ELF32
 540	select DMA_COHERENT
 541	select SIBYTE_BCM1120
 542	select SWAP_IO_SPACE
 543	select SYS_HAS_CPU_SB1
 544	select SYS_SUPPORTS_BIG_ENDIAN
 545	select SYS_SUPPORTS_LITTLE_ENDIAN
 546
 547config SIBYTE_CARMEL
 548	bool "Sibyte BCM91120x-Carmel"
 549	depends on EXPERIMENTAL
 550	select BOOT_ELF32
 551	select DMA_COHERENT
 552	select SIBYTE_BCM1120
 553	select SWAP_IO_SPACE
 554	select SYS_HAS_CPU_SB1
 555	select SYS_SUPPORTS_BIG_ENDIAN
 556	select SYS_SUPPORTS_LITTLE_ENDIAN
 557
 558config SIBYTE_CRHONE
 559	bool "Sibyte BCM91125C-CRhone"
 560	depends on EXPERIMENTAL
 561	select BOOT_ELF32
 562	select DMA_COHERENT
 563	select SIBYTE_BCM1125
 564	select SWAP_IO_SPACE
 565	select SYS_HAS_CPU_SB1
 566	select SYS_SUPPORTS_BIG_ENDIAN
 567	select SYS_SUPPORTS_HIGHMEM
 568	select SYS_SUPPORTS_LITTLE_ENDIAN
 569
 570config SIBYTE_RHONE
 571	bool "Sibyte BCM91125E-Rhone"
 572	depends on EXPERIMENTAL
 573	select BOOT_ELF32
 574	select DMA_COHERENT
 575	select SIBYTE_BCM1125H
 576	select SWAP_IO_SPACE
 577	select SYS_HAS_CPU_SB1
 578	select SYS_SUPPORTS_BIG_ENDIAN
 579	select SYS_SUPPORTS_LITTLE_ENDIAN
 580
 581config SIBYTE_SWARM
 582	bool "Sibyte BCM91250A-SWARM"
 583	select BOOT_ELF32
 584	select DMA_COHERENT
 585	select HAVE_PATA_PLATFORM
 586	select NR_CPUS_DEFAULT_2
 587	select SIBYTE_SB1250
 588	select SWAP_IO_SPACE
 589	select SYS_HAS_CPU_SB1
 590	select SYS_SUPPORTS_BIG_ENDIAN
 591	select SYS_SUPPORTS_HIGHMEM
 592	select SYS_SUPPORTS_LITTLE_ENDIAN
 593	select ZONE_DMA32 if 64BIT
 594
 595config SIBYTE_LITTLESUR
 596	bool "Sibyte BCM91250C2-LittleSur"
 597	depends on EXPERIMENTAL
 598	select BOOT_ELF32
 599	select DMA_COHERENT
 600	select HAVE_PATA_PLATFORM
 601	select NR_CPUS_DEFAULT_2
 602	select SIBYTE_SB1250
 603	select SWAP_IO_SPACE
 604	select SYS_HAS_CPU_SB1
 605	select SYS_SUPPORTS_BIG_ENDIAN
 606	select SYS_SUPPORTS_HIGHMEM
 607	select SYS_SUPPORTS_LITTLE_ENDIAN
 608
 609config SIBYTE_SENTOSA
 610	bool "Sibyte BCM91250E-Sentosa"
 611	depends on EXPERIMENTAL
 612	select BOOT_ELF32
 613	select DMA_COHERENT
 614	select NR_CPUS_DEFAULT_2
 615	select SIBYTE_SB1250
 616	select SWAP_IO_SPACE
 617	select SYS_HAS_CPU_SB1
 618	select SYS_SUPPORTS_BIG_ENDIAN
 619	select SYS_SUPPORTS_LITTLE_ENDIAN
 620
 621config SIBYTE_BIGSUR
 622	bool "Sibyte BCM91480B-BigSur"
 623	select BOOT_ELF32
 624	select DMA_COHERENT
 625	select NR_CPUS_DEFAULT_4
 626	select SIBYTE_BCM1x80
 627	select SWAP_IO_SPACE
 628	select SYS_HAS_CPU_SB1
 629	select SYS_SUPPORTS_BIG_ENDIAN
 630	select SYS_SUPPORTS_HIGHMEM
 631	select SYS_SUPPORTS_LITTLE_ENDIAN
 632	select ZONE_DMA32 if 64BIT
 633
 634config SNI_RM
 635	bool "SNI RM200/300/400"
 636	select ARC if CPU_LITTLE_ENDIAN
 637	select ARC32 if CPU_LITTLE_ENDIAN
 638	select SNIPROM if CPU_BIG_ENDIAN
 639	select ARCH_MAY_HAVE_PC_FDC
 640	select BOOT_ELF32
 641	select CEVT_R4K
 642	select CSRC_R4K
 643	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
 644	select DMA_NONCOHERENT
 645	select GENERIC_ISA_DMA
 646	select HAVE_PCSPKR_PLATFORM
 647	select HW_HAS_EISA
 648	select HW_HAS_PCI
 649	select IRQ_CPU
 650	select I8253
 651	select I8259
 652	select ISA
 653	select SWAP_IO_SPACE if CPU_BIG_ENDIAN
 654	select SYS_HAS_CPU_R4X00
 655	select SYS_HAS_CPU_R5000
 656	select SYS_HAS_CPU_R10000
 657	select R5000_CPU_SCACHE
 658	select SYS_HAS_EARLY_PRINTK
 659	select SYS_SUPPORTS_32BIT_KERNEL
 660	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 661	select SYS_SUPPORTS_BIG_ENDIAN
 662	select SYS_SUPPORTS_HIGHMEM
 663	select SYS_SUPPORTS_LITTLE_ENDIAN
 664	help
 665	  The SNI RM200/300/400 are MIPS-based machines manufactured by
 666	  Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
 667	  Technology and now in turn merged with Fujitsu.  Say Y here to
 668	  support this machine type.
 669
 670config MACH_TX39XX
 671	bool "Toshiba TX39 series based machines"
 672
 673config MACH_TX49XX
 674	bool "Toshiba TX49 series based machines"
 675
 676config MIKROTIK_RB532
 677	bool "Mikrotik RB532 boards"
 678	select CEVT_R4K
 679	select CSRC_R4K
 680	select DMA_NONCOHERENT
 681	select HW_HAS_PCI
 682	select IRQ_CPU
 683	select SYS_HAS_CPU_MIPS32_R1
 684	select SYS_SUPPORTS_32BIT_KERNEL
 685	select SYS_SUPPORTS_LITTLE_ENDIAN
 686	select SWAP_IO_SPACE
 687	select BOOT_RAW
 688	select ARCH_REQUIRE_GPIOLIB
 
 689	help
 690	  Support the Mikrotik(tm) RouterBoard 532 series,
 691	  based on the IDT RC32434 SoC.
 692
 693config WR_PPMC
 694	bool "Wind River PPMC board"
 695	select CEVT_R4K
 696	select CSRC_R4K
 697	select IRQ_CPU
 698	select BOOT_ELF32
 699	select DMA_NONCOHERENT
 700	select HW_HAS_PCI
 701	select PCI_GT64XXX_PCI0
 702	select SWAP_IO_SPACE
 703	select SYS_HAS_CPU_MIPS32_R1
 704	select SYS_HAS_CPU_MIPS32_R2
 705	select SYS_HAS_CPU_MIPS64_R1
 706	select SYS_HAS_CPU_NEVADA
 707	select SYS_HAS_CPU_RM7000
 708	select SYS_SUPPORTS_32BIT_KERNEL
 709	select SYS_SUPPORTS_64BIT_KERNEL
 710	select SYS_SUPPORTS_BIG_ENDIAN
 711	select SYS_SUPPORTS_LITTLE_ENDIAN
 712	help
 713	  This enables support for the Wind River MIPS32 4KC PPMC evaluation
 714	  board, which is based on GT64120 bridge chip.
 715
 716config CAVIUM_OCTEON_SIMULATOR
 717	bool "Cavium Networks Octeon Simulator"
 718	select CEVT_R4K
 719	select 64BIT_PHYS_ADDR
 720	select DMA_COHERENT
 721	select SYS_SUPPORTS_64BIT_KERNEL
 722	select SYS_SUPPORTS_BIG_ENDIAN
 723	select SYS_SUPPORTS_HIGHMEM
 724	select SYS_SUPPORTS_HOTPLUG_CPU
 725	select SYS_HAS_CPU_CAVIUM_OCTEON
 726	select HOLES_IN_ZONE
 727	help
 728	  The Octeon simulator is software performance model of the Cavium
 729	  Octeon Processor. It supports simulating Octeon processors on x86
 730	  hardware.
 731
 732config CAVIUM_OCTEON_REFERENCE_BOARD
 733	bool "Cavium Networks Octeon reference board"
 734	select CEVT_R4K
 735	select 64BIT_PHYS_ADDR
 736	select DMA_COHERENT
 737	select SYS_SUPPORTS_64BIT_KERNEL
 738	select SYS_SUPPORTS_BIG_ENDIAN
 739	select SYS_SUPPORTS_HIGHMEM
 740	select SYS_SUPPORTS_HOTPLUG_CPU
 741	select SYS_HAS_EARLY_PRINTK
 742	select SYS_HAS_CPU_CAVIUM_OCTEON
 743	select SWAP_IO_SPACE
 744	select HW_HAS_PCI
 745	select ARCH_SUPPORTS_MSI
 746	select ZONE_DMA32
 747	select USB_ARCH_HAS_OHCI
 748	select USB_ARCH_HAS_EHCI
 749	select HOLES_IN_ZONE
 
 
 
 
 
 
 
 
 750	help
 751	  This option supports all of the Octeon reference boards from Cavium
 752	  Networks. It builds a kernel that dynamically determines the Octeon
 753	  CPU type and supports all known board reference implementations.
 754	  Some of the supported boards are:
 755		EBT3000
 756		EBH3000
 757		EBH3100
 758		Thunder
 759		Kodama
 760		Hikari
 761	  Say Y here for most Octeon reference boards.
 762
 763config NLM_XLR_BOARD
 764	bool "Netlogic XLR/XLS based systems"
 765	depends on EXPERIMENTAL
 766	select BOOT_ELF32
 767	select NLM_COMMON
 768	select NLM_XLR
 769	select SYS_HAS_CPU_XLR
 770	select SYS_SUPPORTS_SMP
 771	select HW_HAS_PCI
 772	select SWAP_IO_SPACE
 773	select SYS_SUPPORTS_32BIT_KERNEL
 774	select SYS_SUPPORTS_64BIT_KERNEL
 775	select 64BIT_PHYS_ADDR
 776	select SYS_SUPPORTS_BIG_ENDIAN
 777	select SYS_SUPPORTS_HIGHMEM
 778	select DMA_COHERENT
 779	select NR_CPUS_DEFAULT_32
 780	select CEVT_R4K
 781	select CSRC_R4K
 782	select IRQ_CPU
 783	select ZONE_DMA if 64BIT
 784	select SYNC_R4K
 785	select SYS_HAS_EARLY_PRINTK
 
 
 786	help
 787	  Support for systems based on Netlogic XLR and XLS processors.
 788	  Say Y here if you have a XLR or XLS based board.
 789
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 790endchoice
 791
 792source "arch/mips/alchemy/Kconfig"
 
 793source "arch/mips/ath79/Kconfig"
 
 794source "arch/mips/bcm63xx/Kconfig"
 
 
 795source "arch/mips/jazz/Kconfig"
 796source "arch/mips/jz4740/Kconfig"
 797source "arch/mips/lantiq/Kconfig"
 798source "arch/mips/lasat/Kconfig"
 799source "arch/mips/pmc-sierra/Kconfig"
 800source "arch/mips/powertv/Kconfig"
 
 
 801source "arch/mips/sgi-ip27/Kconfig"
 802source "arch/mips/sibyte/Kconfig"
 803source "arch/mips/txx9/Kconfig"
 804source "arch/mips/vr41xx/Kconfig"
 805source "arch/mips/cavium-octeon/Kconfig"
 806source "arch/mips/loongson/Kconfig"
 
 807source "arch/mips/netlogic/Kconfig"
 
 
 808
 809endmenu
 810
 811config RWSEM_GENERIC_SPINLOCK
 812	bool
 813	default y
 814
 815config RWSEM_XCHGADD_ALGORITHM
 816	bool
 817
 818config ARCH_HAS_ILOG2_U32
 819	bool
 820	default n
 821
 822config ARCH_HAS_ILOG2_U64
 823	bool
 824	default n
 825
 826config ARCH_SUPPORTS_OPROFILE
 827	bool
 828	default y if !MIPS_MT_SMTC
 829
 830config GENERIC_HWEIGHT
 831	bool
 832	default y
 833
 834config GENERIC_CALIBRATE_DELAY
 835	bool
 836	default y
 837
 838config GENERIC_CLOCKEVENTS
 839	bool
 840	default y
 841
 842config GENERIC_CMOS_UPDATE
 843	bool
 844	default y
 845
 846config SCHED_OMIT_FRAME_POINTER
 847	bool
 848	default y
 849
 850#
 851# Select some configuration options automatically based on user selections.
 852#
 853config ARC
 854	bool
 855
 856config ARCH_MAY_HAVE_PC_FDC
 857	bool
 858
 859config BOOT_RAW
 860	bool
 861
 862config CEVT_BCM1480
 863	bool
 864
 865config CEVT_DS1287
 866	bool
 867
 868config CEVT_GT641XX
 869	bool
 870
 871config CEVT_R4K_LIB
 872	bool
 873
 874config CEVT_R4K
 875	select CEVT_R4K_LIB
 876	bool
 877
 878config CEVT_SB1250
 879	bool
 880
 881config CEVT_TXX9
 882	bool
 883
 884config CSRC_BCM1480
 885	bool
 886
 887config CSRC_IOASIC
 888	bool
 889
 890config CSRC_POWERTV
 891	bool
 892
 893config CSRC_R4K_LIB
 894	bool
 895
 896config CSRC_R4K
 897	select CSRC_R4K_LIB
 898	bool
 899
 900config CSRC_SB1250
 901	bool
 902
 
 
 
 903config GPIO_TXX9
 904	select GENERIC_GPIO
 905	select ARCH_REQUIRE_GPIOLIB
 906	bool
 907
 908config CFE
 909	bool
 910
 911config ARCH_DMA_ADDR_T_64BIT
 912	def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
 
 
 
 
 
 
 
 
 
 
 
 913
 914config DMA_COHERENT
 915	bool
 916
 917config DMA_NONCOHERENT
 918	bool
 919	select NEED_DMA_MAP_STATE
 920
 921config NEED_DMA_MAP_STATE
 922	bool
 923
 924config SYS_HAS_EARLY_PRINTK
 925	bool
 926
 927config HOTPLUG_CPU
 928	bool "Support for hot-pluggable CPUs"
 929	depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
 930	help
 931	  Say Y here to allow turning CPUs off and on. CPUs can be
 932	  controlled through /sys/devices/system/cpu.
 933	  (Note: power management support will enable this option
 934	    automatically on SMP systems. )
 935	  Say N if you want to disable CPU hotplug.
 936
 937config SYS_SUPPORTS_HOTPLUG_CPU
 938	bool
 939
 940config I8259
 941	bool
 942
 943config MIPS_BONITO64
 944	bool
 945
 946config MIPS_MSC
 947	bool
 948
 949config MIPS_NILE4
 950	bool
 951
 952config MIPS_DISABLE_OBSOLETE_IDE
 953	bool
 954
 955config SYNC_R4K
 956	bool
 957
 958config MIPS_MACHINE
 959	def_bool n
 960
 961config NO_IOPORT
 962	def_bool n
 963
 
 
 
 964config GENERIC_ISA_DMA
 965	bool
 966	select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
 967	select ISA_DMA_API
 968
 969config GENERIC_ISA_DMA_SUPPORT_BROKEN
 970	bool
 971	select GENERIC_ISA_DMA
 972
 973config ISA_DMA_API
 974	bool
 975
 976config GENERIC_GPIO
 977	bool
 978
 979config HOLES_IN_ZONE
 980	bool
 
 
 
 
 981
 982#
 983# Endianess selection.  Sufficiently obscure so many users don't know what to
 984# answer,so we try hard to limit the available choices.  Also the use of a
 985# choice statement should be more obvious to the user.
 986#
 987choice
 988	prompt "Endianess selection"
 989	help
 990	  Some MIPS machines can be configured for either little or big endian
 991	  byte order. These modes require different kernels and a different
 992	  Linux distribution.  In general there is one preferred byteorder for a
 993	  particular system but some systems are just as commonly used in the
 994	  one or the other endianness.
 995
 996config CPU_BIG_ENDIAN
 997	bool "Big endian"
 998	depends on SYS_SUPPORTS_BIG_ENDIAN
 999
1000config CPU_LITTLE_ENDIAN
1001	bool "Little endian"
1002	depends on SYS_SUPPORTS_LITTLE_ENDIAN
1003	help
1004
1005endchoice
1006
1007config EXPORT_UASM
1008	bool
1009
1010config SYS_SUPPORTS_APM_EMULATION
1011	bool
1012
1013config SYS_SUPPORTS_BIG_ENDIAN
1014	bool
1015
1016config SYS_SUPPORTS_LITTLE_ENDIAN
1017	bool
1018
1019config SYS_SUPPORTS_HUGETLBFS
1020	bool
1021	depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1022	default y
1023
1024config IRQ_CPU
1025	bool
1026
1027config IRQ_CPU_RM7K
1028	bool
1029
1030config IRQ_CPU_RM9K
1031	bool
1032
1033config IRQ_MSP_SLP
1034	bool
1035
1036config IRQ_MSP_CIC
1037	bool
1038
1039config IRQ_TXX9
1040	bool
1041
1042config IRQ_GT641XX
1043	bool
1044
1045config IRQ_GIC
1046	bool
1047
1048config MIPS_BOARDS_GEN
1049	bool
1050
1051config PCI_GT64XXX_PCI0
1052	bool
1053
1054config NO_EXCEPT_FILL
1055	bool
1056
1057config MIPS_RM9122
1058	bool
1059	select SERIAL_RM9000
1060
1061config SOC_EMMA2RH
1062	bool
1063	select CEVT_R4K
1064	select CSRC_R4K
1065	select DMA_NONCOHERENT
1066	select IRQ_CPU
1067	select SWAP_IO_SPACE
1068	select SYS_HAS_CPU_R5500
1069	select SYS_SUPPORTS_32BIT_KERNEL
1070	select SYS_SUPPORTS_64BIT_KERNEL
1071	select SYS_SUPPORTS_BIG_ENDIAN
1072
1073config SOC_PNX833X
1074	bool
1075	select CEVT_R4K
1076	select CSRC_R4K
1077	select IRQ_CPU
1078	select DMA_NONCOHERENT
1079	select SYS_HAS_CPU_MIPS32_R2
1080	select SYS_SUPPORTS_32BIT_KERNEL
1081	select SYS_SUPPORTS_LITTLE_ENDIAN
1082	select SYS_SUPPORTS_BIG_ENDIAN
1083	select GENERIC_GPIO
1084	select CPU_MIPSR2_IRQ_VI
1085
1086config SOC_PNX8335
1087	bool
1088	select SOC_PNX833X
1089
1090config PNX8550
1091	bool
1092	select SOC_PNX8550
1093
1094config SOC_PNX8550
1095	bool
1096	select DMA_NONCOHERENT
1097	select HW_HAS_PCI
1098	select SYS_HAS_CPU_MIPS32_R1
1099	select SYS_HAS_EARLY_PRINTK
1100	select SYS_SUPPORTS_32BIT_KERNEL
1101	select GENERIC_GPIO
1102
1103config SWAP_IO_SPACE
1104	bool
1105
1106config SERIAL_RM9000
1107	bool
1108
1109config SGI_HAS_INDYDOG
1110	bool
1111
1112config SGI_HAS_HAL2
1113	bool
1114
1115config SGI_HAS_SEEQ
1116	bool
1117
1118config SGI_HAS_WD93
1119	bool
1120
1121config SGI_HAS_ZILOG
1122	bool
1123
1124config SGI_HAS_I8042
1125	bool
1126
1127config DEFAULT_SGI_PARTITION
1128	bool
1129
1130config ARC32
1131	bool
1132
1133config SNIPROM
1134	bool
1135
1136config BOOT_ELF32
1137	bool
1138
 
 
 
 
 
 
 
 
 
 
 
 
1139config MIPS_L1_CACHE_SHIFT
1140	int
1141	default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1142	default "6" if MIPS_CPU_SCACHE
1143	default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
 
1144	default "5"
1145
1146config HAVE_STD_PC_SERIAL_PORT
1147	bool
1148
1149config ARC_CONSOLE
1150	bool "ARC console support"
1151	depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1152
1153config ARC_MEMORY
1154	bool
1155	depends on MACH_JAZZ || SNI_RM || SGI_IP32
1156	default y
1157
1158config ARC_PROMLIB
1159	bool
1160	depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1161	default y
1162
1163config ARC64
1164	bool
1165
1166config BOOT_ELF64
1167	bool
1168
1169menu "CPU selection"
1170
1171choice
1172	prompt "CPU type"
1173	default CPU_R4X00
1174
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1175config CPU_LOONGSON2E
1176	bool "Loongson 2E"
1177	depends on SYS_HAS_CPU_LOONGSON2E
1178	select CPU_LOONGSON2
1179	help
1180	  The Loongson 2E processor implements the MIPS III instruction set
1181	  with many extensions.
1182
1183	  It has an internal FPGA northbridge, which is compatible to
1184	  bonito64.
1185
1186config CPU_LOONGSON2F
1187	bool "Loongson 2F"
1188	depends on SYS_HAS_CPU_LOONGSON2F
1189	select CPU_LOONGSON2
1190	select GENERIC_GPIO
1191	select ARCH_REQUIRE_GPIOLIB
1192	help
1193	  The Loongson 2F processor implements the MIPS III instruction set
1194	  with many extensions.
1195
1196	  Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1197	  have a similar programming interface with FPGA northbridge used in
1198	  Loongson2E.
1199
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1200config CPU_MIPS32_R1
1201	bool "MIPS32 Release 1"
1202	depends on SYS_HAS_CPU_MIPS32_R1
1203	select CPU_HAS_PREFETCH
1204	select CPU_SUPPORTS_32BIT_KERNEL
1205	select CPU_SUPPORTS_HIGHMEM
1206	help
1207	  Choose this option to build a kernel for release 1 or later of the
1208	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1209	  MIPS processor are based on a MIPS32 processor.  If you know the
1210	  specific type of processor in your system, choose those that one
1211	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1212	  Release 2 of the MIPS32 architecture is available since several
1213	  years so chances are you even have a MIPS32 Release 2 processor
1214	  in which case you should choose CPU_MIPS32_R2 instead for better
1215	  performance.
1216
1217config CPU_MIPS32_R2
1218	bool "MIPS32 Release 2"
1219	depends on SYS_HAS_CPU_MIPS32_R2
1220	select CPU_HAS_PREFETCH
1221	select CPU_SUPPORTS_32BIT_KERNEL
1222	select CPU_SUPPORTS_HIGHMEM
 
 
1223	help
1224	  Choose this option to build a kernel for release 2 or later of the
1225	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1226	  MIPS processor are based on a MIPS32 processor.  If you know the
1227	  specific type of processor in your system, choose those that one
1228	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1229
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1230config CPU_MIPS64_R1
1231	bool "MIPS64 Release 1"
1232	depends on SYS_HAS_CPU_MIPS64_R1
1233	select CPU_HAS_PREFETCH
1234	select CPU_SUPPORTS_32BIT_KERNEL
1235	select CPU_SUPPORTS_64BIT_KERNEL
1236	select CPU_SUPPORTS_HIGHMEM
1237	select CPU_SUPPORTS_HUGEPAGES
1238	help
1239	  Choose this option to build a kernel for release 1 or later of the
1240	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1241	  MIPS processor are based on a MIPS64 processor.  If you know the
1242	  specific type of processor in your system, choose those that one
1243	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1244	  Release 2 of the MIPS64 architecture is available since several
1245	  years so chances are you even have a MIPS64 Release 2 processor
1246	  in which case you should choose CPU_MIPS64_R2 instead for better
1247	  performance.
1248
1249config CPU_MIPS64_R2
1250	bool "MIPS64 Release 2"
1251	depends on SYS_HAS_CPU_MIPS64_R2
1252	select CPU_HAS_PREFETCH
1253	select CPU_SUPPORTS_32BIT_KERNEL
1254	select CPU_SUPPORTS_64BIT_KERNEL
1255	select CPU_SUPPORTS_HIGHMEM
1256	select CPU_SUPPORTS_HUGEPAGES
 
 
1257	help
1258	  Choose this option to build a kernel for release 2 or later of the
1259	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1260	  MIPS processor are based on a MIPS64 processor.  If you know the
1261	  specific type of processor in your system, choose those that one
1262	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1263
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1264config CPU_R3000
1265	bool "R3000"
1266	depends on SYS_HAS_CPU_R3000
1267	select CPU_HAS_WB
1268	select CPU_SUPPORTS_32BIT_KERNEL
1269	select CPU_SUPPORTS_HIGHMEM
1270	help
1271	  Please make sure to pick the right CPU type. Linux/MIPS is not
1272	  designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1273	  *not* work on R4000 machines and vice versa.  However, since most
1274	  of the supported machines have an R4000 (or similar) CPU, R4x00
1275	  might be a safe bet.  If the resulting kernel does not work,
1276	  try to recompile with R3000.
1277
1278config CPU_TX39XX
1279	bool "R39XX"
1280	depends on SYS_HAS_CPU_TX39XX
1281	select CPU_SUPPORTS_32BIT_KERNEL
1282
1283config CPU_VR41XX
1284	bool "R41xx"
1285	depends on SYS_HAS_CPU_VR41XX
1286	select CPU_SUPPORTS_32BIT_KERNEL
1287	select CPU_SUPPORTS_64BIT_KERNEL
1288	help
1289	  The options selects support for the NEC VR4100 series of processors.
1290	  Only choose this option if you have one of these processors as a
1291	  kernel built with this option will not run on any other type of
1292	  processor or vice versa.
1293
1294config CPU_R4300
1295	bool "R4300"
1296	depends on SYS_HAS_CPU_R4300
1297	select CPU_SUPPORTS_32BIT_KERNEL
1298	select CPU_SUPPORTS_64BIT_KERNEL
1299	help
1300	  MIPS Technologies R4300-series processors.
1301
1302config CPU_R4X00
1303	bool "R4x00"
1304	depends on SYS_HAS_CPU_R4X00
1305	select CPU_SUPPORTS_32BIT_KERNEL
1306	select CPU_SUPPORTS_64BIT_KERNEL
 
1307	help
1308	  MIPS Technologies R4000-series processors other than 4300, including
1309	  the R4000, R4400, R4600, and 4700.
1310
1311config CPU_TX49XX
1312	bool "R49XX"
1313	depends on SYS_HAS_CPU_TX49XX
1314	select CPU_HAS_PREFETCH
1315	select CPU_SUPPORTS_32BIT_KERNEL
1316	select CPU_SUPPORTS_64BIT_KERNEL
 
1317
1318config CPU_R5000
1319	bool "R5000"
1320	depends on SYS_HAS_CPU_R5000
1321	select CPU_SUPPORTS_32BIT_KERNEL
1322	select CPU_SUPPORTS_64BIT_KERNEL
 
1323	help
1324	  MIPS Technologies R5000-series processors other than the Nevada.
1325
1326config CPU_R5432
1327	bool "R5432"
1328	depends on SYS_HAS_CPU_R5432
1329	select CPU_SUPPORTS_32BIT_KERNEL
1330	select CPU_SUPPORTS_64BIT_KERNEL
 
1331
1332config CPU_R5500
1333	bool "R5500"
1334	depends on SYS_HAS_CPU_R5500
1335	select CPU_SUPPORTS_32BIT_KERNEL
1336	select CPU_SUPPORTS_64BIT_KERNEL
1337	select CPU_SUPPORTS_HUGEPAGES
1338	help
1339	  NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1340	  instruction set.
1341
1342config CPU_R6000
1343	bool "R6000"
1344	depends on EXPERIMENTAL
1345	depends on SYS_HAS_CPU_R6000
1346	select CPU_SUPPORTS_32BIT_KERNEL
1347	help
1348	  MIPS Technologies R6000 and R6000A series processors.  Note these
1349	  processors are extremely rare and the support for them is incomplete.
1350
1351config CPU_NEVADA
1352	bool "RM52xx"
1353	depends on SYS_HAS_CPU_NEVADA
1354	select CPU_SUPPORTS_32BIT_KERNEL
1355	select CPU_SUPPORTS_64BIT_KERNEL
 
1356	help
1357	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1358
1359config CPU_R8000
1360	bool "R8000"
1361	depends on EXPERIMENTAL
1362	depends on SYS_HAS_CPU_R8000
1363	select CPU_HAS_PREFETCH
1364	select CPU_SUPPORTS_64BIT_KERNEL
1365	help
1366	  MIPS Technologies R8000 processors.  Note these processors are
1367	  uncommon and the support for them is incomplete.
1368
1369config CPU_R10000
1370	bool "R10000"
1371	depends on SYS_HAS_CPU_R10000
1372	select CPU_HAS_PREFETCH
1373	select CPU_SUPPORTS_32BIT_KERNEL
1374	select CPU_SUPPORTS_64BIT_KERNEL
1375	select CPU_SUPPORTS_HIGHMEM
 
1376	help
1377	  MIPS Technologies R10000-series processors.
1378
1379config CPU_RM7000
1380	bool "RM7000"
1381	depends on SYS_HAS_CPU_RM7000
1382	select CPU_HAS_PREFETCH
1383	select CPU_SUPPORTS_32BIT_KERNEL
1384	select CPU_SUPPORTS_64BIT_KERNEL
1385	select CPU_SUPPORTS_HIGHMEM
1386
1387config CPU_RM9000
1388	bool "RM9000"
1389	depends on SYS_HAS_CPU_RM9000
1390	select CPU_HAS_PREFETCH
1391	select CPU_SUPPORTS_32BIT_KERNEL
1392	select CPU_SUPPORTS_64BIT_KERNEL
1393	select CPU_SUPPORTS_HIGHMEM
1394	select WEAK_ORDERING
1395
1396config CPU_SB1
1397	bool "SB1"
1398	depends on SYS_HAS_CPU_SB1
1399	select CPU_SUPPORTS_32BIT_KERNEL
1400	select CPU_SUPPORTS_64BIT_KERNEL
1401	select CPU_SUPPORTS_HIGHMEM
 
1402	select WEAK_ORDERING
1403
1404config CPU_CAVIUM_OCTEON
1405	bool "Cavium Octeon processor"
1406	depends on SYS_HAS_CPU_CAVIUM_OCTEON
1407	select CPU_HAS_PREFETCH
1408	select CPU_SUPPORTS_64BIT_KERNEL
1409	select SYS_SUPPORTS_SMP
1410	select NR_CPUS_DEFAULT_16
1411	select WEAK_ORDERING
1412	select CPU_SUPPORTS_HIGHMEM
1413	select CPU_SUPPORTS_HUGEPAGES
 
 
 
1414	help
1415	  The Cavium Octeon processor is a highly integrated chip containing
1416	  many ethernet hardware widgets for networking tasks. The processor
1417	  can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1418	  Full details can be found at http://www.caviumnetworks.com.
1419
1420config CPU_BMIPS3300
1421	bool "BMIPS3300"
1422	depends on SYS_HAS_CPU_BMIPS3300
1423	select DMA_NONCOHERENT
1424	select IRQ_CPU
1425	select SWAP_IO_SPACE
1426	select SYS_SUPPORTS_32BIT_KERNEL
1427	select WEAK_ORDERING
1428	help
1429	  Broadcom BMIPS3300 processors.
1430
1431config CPU_BMIPS4350
1432	bool "BMIPS4350"
1433	depends on SYS_HAS_CPU_BMIPS4350
1434	select CPU_SUPPORTS_32BIT_KERNEL
1435	select DMA_NONCOHERENT
1436	select IRQ_CPU
1437	select SWAP_IO_SPACE
1438	select SYS_SUPPORTS_SMP
1439	select SYS_SUPPORTS_HOTPLUG_CPU
1440	select WEAK_ORDERING
1441	help
1442	  Broadcom BMIPS4350 ("VIPER") processors.
1443
1444config CPU_BMIPS4380
1445	bool "BMIPS4380"
1446	depends on SYS_HAS_CPU_BMIPS4380
1447	select CPU_SUPPORTS_32BIT_KERNEL
1448	select DMA_NONCOHERENT
1449	select IRQ_CPU
1450	select SWAP_IO_SPACE
1451	select SYS_SUPPORTS_SMP
1452	select SYS_SUPPORTS_HOTPLUG_CPU
1453	select WEAK_ORDERING
 
 
1454	help
1455	  Broadcom BMIPS4380 processors.
1456
1457config CPU_BMIPS5000
1458	bool "BMIPS5000"
1459	depends on SYS_HAS_CPU_BMIPS5000
1460	select CPU_SUPPORTS_32BIT_KERNEL
 
1461	select CPU_SUPPORTS_HIGHMEM
1462	select DMA_NONCOHERENT
1463	select IRQ_CPU
1464	select SWAP_IO_SPACE
1465	select SYS_SUPPORTS_SMP
1466	select SYS_SUPPORTS_HOTPLUG_CPU
1467	select WEAK_ORDERING
 
1468	help
1469	  Broadcom BMIPS5000 processors.
1470
1471config CPU_XLR
1472	bool "Netlogic XLR SoC"
1473	depends on SYS_HAS_CPU_XLR
1474	select CPU_SUPPORTS_32BIT_KERNEL
1475	select CPU_SUPPORTS_64BIT_KERNEL
1476	select CPU_SUPPORTS_HIGHMEM
1477	select WEAK_ORDERING
1478	select WEAK_REORDERING_BEYOND_LLSC
 
 
1479	select CPU_SUPPORTS_HUGEPAGES
 
1480	help
1481	  Netlogic Microsystems XLR/XLS processors.
1482endchoice
1483
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1484if CPU_LOONGSON2F
1485config CPU_NOP_WORKAROUNDS
1486	bool
1487
1488config CPU_JUMP_WORKAROUNDS
1489	bool
1490
1491config CPU_LOONGSON2F_WORKAROUNDS
1492	bool "Loongson 2F Workarounds"
1493	default y
1494	select CPU_NOP_WORKAROUNDS
1495	select CPU_JUMP_WORKAROUNDS
1496	help
1497	  Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1498	  require workarounds.  Without workarounds the system may hang
1499	  unexpectedly.  For more information please refer to the gas
1500	  -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1501
1502	  Loongson 2F03 and later have fixed these issues and no workarounds
1503	  are needed.  The workarounds have no significant side effect on them
1504	  but may decrease the performance of the system so this option should
1505	  be disabled unless the kernel is intended to be run on 2F01 or 2F02
1506	  systems.
1507
1508	  If unsure, please say Y.
1509endif # CPU_LOONGSON2F
1510
1511config SYS_SUPPORTS_ZBOOT
1512	bool
1513	select HAVE_KERNEL_GZIP
1514	select HAVE_KERNEL_BZIP2
 
1515	select HAVE_KERNEL_LZMA
1516	select HAVE_KERNEL_LZO
 
1517
1518config SYS_SUPPORTS_ZBOOT_UART16550
1519	bool
1520	select SYS_SUPPORTS_ZBOOT
1521
 
 
 
 
1522config CPU_LOONGSON2
1523	bool
1524	select CPU_SUPPORTS_32BIT_KERNEL
1525	select CPU_SUPPORTS_64BIT_KERNEL
1526	select CPU_SUPPORTS_HIGHMEM
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1527
1528config SYS_HAS_CPU_LOONGSON2E
1529	bool
1530
1531config SYS_HAS_CPU_LOONGSON2F
1532	bool
1533	select CPU_SUPPORTS_CPUFREQ
1534	select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1535	select CPU_SUPPORTS_UNCACHED_ACCELERATED
1536
 
 
 
 
 
 
1537config SYS_HAS_CPU_MIPS32_R1
1538	bool
1539
1540config SYS_HAS_CPU_MIPS32_R2
1541	bool
1542
 
 
 
 
 
 
 
 
 
1543config SYS_HAS_CPU_MIPS64_R1
1544	bool
1545
1546config SYS_HAS_CPU_MIPS64_R2
1547	bool
1548
 
 
 
1549config SYS_HAS_CPU_R3000
1550	bool
1551
1552config SYS_HAS_CPU_TX39XX
1553	bool
1554
1555config SYS_HAS_CPU_VR41XX
1556	bool
1557
1558config SYS_HAS_CPU_R4300
1559	bool
1560
1561config SYS_HAS_CPU_R4X00
1562	bool
1563
1564config SYS_HAS_CPU_TX49XX
1565	bool
1566
1567config SYS_HAS_CPU_R5000
1568	bool
1569
1570config SYS_HAS_CPU_R5432
1571	bool
1572
1573config SYS_HAS_CPU_R5500
1574	bool
1575
1576config SYS_HAS_CPU_R6000
1577	bool
1578
1579config SYS_HAS_CPU_NEVADA
1580	bool
1581
1582config SYS_HAS_CPU_R8000
1583	bool
1584
1585config SYS_HAS_CPU_R10000
1586	bool
1587
1588config SYS_HAS_CPU_RM7000
1589	bool
1590
1591config SYS_HAS_CPU_RM9000
1592	bool
1593
1594config SYS_HAS_CPU_SB1
1595	bool
1596
1597config SYS_HAS_CPU_CAVIUM_OCTEON
1598	bool
1599
1600config SYS_HAS_CPU_BMIPS3300
1601	bool
1602
 
 
 
 
1603config SYS_HAS_CPU_BMIPS4350
1604	bool
 
1605
1606config SYS_HAS_CPU_BMIPS4380
1607	bool
 
1608
1609config SYS_HAS_CPU_BMIPS5000
1610	bool
 
1611
1612config SYS_HAS_CPU_XLR
1613	bool
1614
 
 
 
 
 
 
 
 
 
1615#
1616# CPU may reorder R->R, R->W, W->R, W->W
1617# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1618#
1619config WEAK_ORDERING
1620	bool
1621
1622#
1623# CPU may reorder reads and writes beyond LL/SC
1624# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1625#
1626config WEAK_REORDERING_BEYOND_LLSC
1627	bool
1628endmenu
1629
1630#
1631# These two indicate any level of the MIPS32 and MIPS64 architecture
1632#
1633config CPU_MIPS32
1634	bool
1635	default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1636
1637config CPU_MIPS64
1638	bool
1639	default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1640
1641#
1642# These two indicate the revision of the architecture, either Release 1 or Release 2
1643#
1644config CPU_MIPSR1
1645	bool
1646	default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1647
1648config CPU_MIPSR2
1649	bool
1650	default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1651
1652config SYS_SUPPORTS_32BIT_KERNEL
1653	bool
1654config SYS_SUPPORTS_64BIT_KERNEL
1655	bool
1656config CPU_SUPPORTS_32BIT_KERNEL
1657	bool
1658config CPU_SUPPORTS_64BIT_KERNEL
1659	bool
1660config CPU_SUPPORTS_CPUFREQ
1661	bool
1662config CPU_SUPPORTS_ADDRWINCFG
1663	bool
1664config CPU_SUPPORTS_HUGEPAGES
1665	bool
1666config CPU_SUPPORTS_UNCACHED_ACCELERATED
1667	bool
1668config MIPS_PGD_C0_CONTEXT
1669	bool
1670	default y if 64BIT && CPU_MIPSR2
1671
1672#
1673# Set to y for ptrace access to watch registers.
1674#
1675config HARDWARE_WATCHPOINTS
1676       bool
1677       default y if CPU_MIPSR1 || CPU_MIPSR2
1678
1679menu "Kernel type"
1680
1681choice
1682
1683	prompt "Kernel code model"
1684	help
1685	  You should only select this option if you have a workload that
1686	  actually benefits from 64-bit processing or if your machine has
1687	  large memory.  You will only be presented a single option in this
1688	  menu if your system does not support both 32-bit and 64-bit kernels.
1689
1690config 32BIT
1691	bool "32-bit kernel"
1692	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1693	select TRAD_SIGNALS
1694	help
1695	  Select this option if you want to build a 32-bit kernel.
 
1696config 64BIT
1697	bool "64-bit kernel"
1698	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1699	select HAVE_SYSCALL_WRAPPERS
1700	help
1701	  Select this option if you want to build a 64-bit kernel.
1702
1703endchoice
1704
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1705choice
1706	prompt "Kernel page size"
1707	default PAGE_SIZE_4KB
1708
1709config PAGE_SIZE_4KB
1710	bool "4kB"
1711	depends on !CPU_LOONGSON2
 
1712	help
1713	 This option select the standard 4kB Linux page size.  On some
1714	 R3000-family processors this is the only available page size.  Using
1715	 4kB page size will minimize memory consumption and is therefore
1716	 recommended for low memory systems.
1717
1718config PAGE_SIZE_8KB
1719	bool "8kB"
1720	depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
 
1721	help
1722	  Using 8kB page size will result in higher performance kernel at
1723	  the price of higher memory consumption.  This option is available
1724	  only on R8000 and cnMIPS processors.  Note that you will need a
1725	  suitable Linux distribution to support this.
1726
1727config PAGE_SIZE_16KB
1728	bool "16kB"
1729	depends on !CPU_R3000 && !CPU_TX39XX
1730	help
1731	  Using 16kB page size will result in higher performance kernel at
1732	  the price of higher memory consumption.  This option is available on
1733	  all non-R3000 family processors.  Note that you will need a suitable
1734	  Linux distribution to support this.
1735
1736config PAGE_SIZE_32KB
1737	bool "32kB"
1738	depends on CPU_CAVIUM_OCTEON
 
1739	help
1740	  Using 32kB page size will result in higher performance kernel at
1741	  the price of higher memory consumption.  This option is available
1742	  only on cnMIPS cores.  Note that you will need a suitable Linux
1743	  distribution to support this.
1744
1745config PAGE_SIZE_64KB
1746	bool "64kB"
1747	depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1748	help
1749	  Using 64kB page size will result in higher performance kernel at
1750	  the price of higher memory consumption.  This option is available on
1751	  all non-R3000 family processor.  Not that at the time of this
1752	  writing this option is still high experimental.
1753
1754endchoice
1755
1756config FORCE_MAX_ZONEORDER
1757	int "Maximum zone order"
1758	range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1759	default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB
1760	range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
1761	default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB
 
 
1762	range 11 64
1763	default "11"
1764	help
1765	  The kernel memory allocator divides physically contiguous memory
1766	  blocks into "zones", where each zone is a power of two number of
1767	  pages.  This option selects the largest power of two that the kernel
1768	  keeps in the memory allocator.  If you need to allocate very large
1769	  blocks of physically contiguous memory, then you may need to
1770	  increase this value.
1771
1772	  This config option is actually maximum order plus one. For example,
1773	  a value of 11 means that the largest free memory block is 2^10 pages.
1774
1775	  The page size is not necessarily 4KB.  Keep this in mind
1776	  when choosing a value for this option.
1777
1778config BOARD_SCACHE
1779	bool
1780
1781config IP22_CPU_SCACHE
1782	bool
1783	select BOARD_SCACHE
1784
1785#
1786# Support for a MIPS32 / MIPS64 style S-caches
1787#
1788config MIPS_CPU_SCACHE
1789	bool
1790	select BOARD_SCACHE
1791
1792config R5000_CPU_SCACHE
1793	bool
1794	select BOARD_SCACHE
1795
1796config RM7000_CPU_SCACHE
1797	bool
1798	select BOARD_SCACHE
1799
1800config SIBYTE_DMA_PAGEOPS
1801	bool "Use DMA to clear/copy pages"
1802	depends on CPU_SB1
1803	help
1804	  Instead of using the CPU to zero and copy pages, use a Data Mover
1805	  channel.  These DMA channels are otherwise unused by the standard
1806	  SiByte Linux port.  Seems to give a small performance benefit.
1807
1808config CPU_HAS_PREFETCH
1809	bool
1810
1811choice
1812	prompt "MIPS MT options"
 
1813
1814config MIPS_MT_DISABLED
1815	bool "Disable multithreading support."
1816	help
1817	  Use this option if your workload can't take advantage of
1818	  MIPS hardware multithreading support.  On systems that don't have
1819	  the option of an MT-enabled processor this option will be the only
1820	  option in this menu.
1821
1822config MIPS_MT_SMP
1823	bool "Use 1 TC on each available VPE for SMP"
1824	depends on SYS_SUPPORTS_MULTITHREADING
1825	select CPU_MIPSR2_IRQ_VI
1826	select CPU_MIPSR2_IRQ_EI
 
1827	select MIPS_MT
1828	select NR_CPUS_DEFAULT_2
1829	select SMP
1830	select SYS_SUPPORTS_SCHED_SMT if SMP
1831	select SYS_SUPPORTS_SMP
1832	select SMP_UP
1833	help
1834	  This is a kernel model which is known a VSMP but lately has been
1835	  marketesed into SMVP.
1836	  Virtual SMP uses the processor's VPEs  to implement virtual
1837	  processors. In currently available configuration of the 34K processor
1838	  this allows for a dual processor. Both processors will share the same
1839	  primary caches; each will obtain the half of the TLB for it's own
1840	  exclusive use. For a layman this model can be described as similar to
1841	  what Intel calls Hyperthreading.
1842
1843	  For further information see http://www.linux-mips.org/wiki/34K#VSMP
1844
1845config MIPS_MT_SMTC
1846	bool "SMTC: Use all TCs on all VPEs for SMP"
1847	depends on CPU_MIPS32_R2
1848	#depends on CPU_MIPS64_R2		# once there is hardware ...
1849	depends on SYS_SUPPORTS_MULTITHREADING
1850	select CPU_MIPSR2_IRQ_VI
1851	select CPU_MIPSR2_IRQ_EI
1852	select MIPS_MT
1853	select NR_CPUS_DEFAULT_8
1854	select SMP
1855	select SYS_SUPPORTS_SMP
1856	select SMP_UP
 
1857	help
1858	  This is a kernel model which is known a SMTC or lately has been
1859	  marketesed into SMVP.
1860	  is presenting the available TC's of the core as processors to Linux.
1861	  On currently available 34K processors this means a Linux system will
1862	  see up to 5 processors. The implementation of the SMTC kernel differs
1863	  significantly from VSMP and cannot efficiently coexist in the same
1864	  kernel binary so the choice between VSMP and SMTC is a compile time
1865	  decision.
1866
1867	  For further information see http://www.linux-mips.org/wiki/34K#SMTC
1868
1869endchoice
1870
1871config MIPS_MT
1872	bool
1873
1874config SCHED_SMT
1875	bool "SMT (multithreading) scheduler support"
1876	depends on SYS_SUPPORTS_SCHED_SMT
1877	default n
1878	help
1879	  SMT scheduler support improves the CPU scheduler's decision making
1880	  when dealing with MIPS MT enabled cores at a cost of slightly
1881	  increased overhead in some places. If unsure say N here.
1882
1883config SYS_SUPPORTS_SCHED_SMT
1884	bool
1885
1886
1887config SYS_SUPPORTS_MULTITHREADING
1888	bool
1889
1890config MIPS_MT_FPAFF
1891	bool "Dynamic FPU affinity for FP-intensive threads"
1892	default y
1893	depends on MIPS_MT_SMP || MIPS_MT_SMTC
 
 
 
 
 
 
 
 
 
 
 
 
 
1894
1895config MIPS_VPE_LOADER
1896	bool "VPE loader support."
1897	depends on SYS_SUPPORTS_MULTITHREADING
1898	select CPU_MIPSR2_IRQ_VI
1899	select CPU_MIPSR2_IRQ_EI
1900	select MIPS_MT
1901	help
1902	  Includes a loader for loading an elf relocatable object
1903	  onto another VPE and running it.
1904
1905config MIPS_MT_SMTC_IM_BACKSTOP
1906	bool "Use per-TC register bits as backstop for inhibited IM bits"
1907	depends on MIPS_MT_SMTC
1908	default n
1909	help
1910	  To support multiple TC microthreads acting as "CPUs" within
1911	  a VPE, VPE-wide interrupt mask bits must be specially manipulated
1912	  during interrupt handling. To support legacy drivers and interrupt
1913	  controller management code, SMTC has a "backstop" to track and
1914	  if necessary restore the interrupt mask. This has some performance
1915	  impact on interrupt service overhead.
1916
1917config MIPS_MT_SMTC_IRQAFF
1918	bool "Support IRQ affinity API"
1919	depends on MIPS_MT_SMTC
1920	default n
1921	help
1922	  Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1923	  for SMTC Linux kernel. Requires platform support, of which
1924	  an example can be found in the MIPS kernel i8259 and Malta
1925	  platform code.  Adds some overhead to interrupt dispatch, and
1926	  should be used only if you know what you are doing.
1927
1928config MIPS_VPE_LOADER_TOM
1929	bool "Load VPE program into memory hidden from linux"
1930	depends on MIPS_VPE_LOADER
1931	default y
1932	help
1933	  The loader can use memory that is present but has been hidden from
1934	  Linux using the kernel command line option "mem=xxMB". It's up to
1935	  you to ensure the amount you put in the option and the space your
1936	  program requires is less or equal to the amount physically present.
1937
1938# this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1939config MIPS_VPE_APSP_API
1940	bool "Enable support for AP/SP API (RTLX)"
1941	depends on MIPS_VPE_LOADER
1942	help
1943
1944config MIPS_APSP_KSPD
1945	bool "Enable KSPD"
1946	depends on MIPS_VPE_APSP_API
1947	default y
1948	help
1949	  KSPD is a kernel daemon that accepts syscall requests from the SP
1950	  side, actions them and returns the results. It also handles the
1951	  "exit" syscall notifying other kernel modules the SP program is
1952	  exiting.  You probably want to say yes here.
1953
1954config MIPS_CMP
1955	bool "MIPS CMP framework support"
1956	depends on SYS_SUPPORTS_MIPS_CMP
 
1957	select SYNC_R4K
1958	select SYS_SUPPORTS_SMP
1959	select SYS_SUPPORTS_SCHED_SMT if SMP
1960	select WEAK_ORDERING
1961	default n
1962	help
1963	  This is a placeholder option for the GCMP work. It will need to
1964	  be handled differently...
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1965
1966config SB1_PASS_1_WORKAROUNDS
 
 
 
 
 
 
 
 
1967	bool
1968	depends on CPU_SB1_PASS_1
1969	default y
1970
1971config SB1_PASS_2_WORKAROUNDS
1972	bool
1973	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1974	default y
1975
1976config SB1_PASS_2_1_WORKAROUNDS
1977	bool
1978	depends on CPU_SB1 && CPU_SB1_PASS_2
1979	default y
1980
1981config 64BIT_PHYS_ADDR
1982	bool
1983
1984config ARCH_PHYS_ADDR_T_64BIT
1985       def_bool 64BIT_PHYS_ADDR
 
 
 
 
 
 
 
 
1986
1987config CPU_HAS_SMARTMIPS
1988	depends on SYS_SUPPORTS_SMARTMIPS
1989	bool "Support for the SmartMIPS ASE"
1990	help
1991	  SmartMIPS is a extension of the MIPS32 architecture aimed at
1992	  increased security at both hardware and software level for
1993	  smartcards.  Enabling this option will allow proper use of the
1994	  SmartMIPS instructions by Linux applications.  However a kernel with
1995	  this option will not work on a MIPS core without SmartMIPS core.  If
1996	  you don't know you probably don't have SmartMIPS and should say N
1997	  here.
1998
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1999config CPU_HAS_WB
2000	bool
2001
 
 
 
 
 
 
2002#
2003# Vectored interrupt mode is an R2 feature
2004#
2005config CPU_MIPSR2_IRQ_VI
2006	bool
2007
2008#
2009# Extended interrupt mode is an R2 feature
2010#
2011config CPU_MIPSR2_IRQ_EI
2012	bool
2013
2014config CPU_HAS_SYNC
2015	bool
2016	depends on !CPU_R3000
2017	default y
2018
2019config GENERIC_CLOCKEVENTS_BROADCAST
2020	bool
2021
2022#
2023# CPU non-features
2024#
2025config CPU_DADDI_WORKAROUNDS
2026	bool
2027
2028config CPU_R4000_WORKAROUNDS
2029	bool
2030	select CPU_R4400_WORKAROUNDS
2031
2032config CPU_R4400_WORKAROUNDS
2033	bool
2034
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2035#
2036# - Highmem only makes sense for the 32-bit kernel.
2037# - The current highmem code will only work properly on physically indexed
2038#   caches such as R3000, SB1, R7000 or those that look like they're virtually
2039#   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
2040#   moment we protect the user and offer the highmem option only on machines
2041#   where it's known to be safe.  This will not offer highmem on a few systems
2042#   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2043#   indexed CPUs but we're playing safe.
2044# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2045#   know they might have memory configurations that could make use of highmem
2046#   support.
2047#
2048config HIGHMEM
2049	bool "High Memory Support"
2050	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2051
2052config CPU_SUPPORTS_HIGHMEM
2053	bool
2054
2055config SYS_SUPPORTS_HIGHMEM
2056	bool
2057
2058config SYS_SUPPORTS_SMARTMIPS
2059	bool
2060
 
 
 
 
 
 
 
 
 
 
 
 
 
2061config ARCH_FLATMEM_ENABLE
2062	def_bool y
2063	depends on !NUMA && !CPU_LOONGSON2
2064
2065config ARCH_DISCONTIGMEM_ENABLE
2066	bool
2067	default y if SGI_IP27
2068	help
2069	  Say Y to support efficient handling of discontiguous physical memory,
2070	  for architectures which are either NUMA (Non-Uniform Memory Access)
2071	  or have huge holes in the physical address space for other reasons.
2072	  See <file:Documentation/vm/numa> for more.
2073
2074config ARCH_POPULATES_NODE_MAP
2075	def_bool y
2076
2077config ARCH_SPARSEMEM_ENABLE
2078	bool
2079	select SPARSEMEM_STATIC
2080
2081config NUMA
2082	bool "NUMA Support"
2083	depends on SYS_SUPPORTS_NUMA
2084	help
2085	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2086	  Access).  This option improves performance on systems with more
2087	  than two nodes; on two node systems it is generally better to
2088	  leave it disabled; on single node systems disable this option
2089	  disabled.
2090
2091config SYS_SUPPORTS_NUMA
2092	bool
2093
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2094config NODES_SHIFT
2095	int
2096	default "6"
2097	depends on NEED_MULTIPLE_NODES
2098
2099config HW_PERF_EVENTS
2100	bool "Enable hardware performance counter support for perf events"
2101	depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2102	default y
2103	help
2104	  Enable hardware performance counter support for perf events. If
2105	  disabled, perf events will use software events only.
2106
2107source "mm/Kconfig"
2108
2109config SMP
2110	bool "Multi-Processing support"
2111	depends on SYS_SUPPORTS_SMP
2112	select IRQ_PER_CPU
2113	select USE_GENERIC_SMP_HELPERS
2114	help
2115	  This enables support for systems with more than one CPU. If you have
2116	  a system with only one CPU, like most personal computers, say N. If
2117	  you have a system with more than one CPU, say Y.
2118
2119	  If you say N here, the kernel will run on single and multiprocessor
2120	  machines, but will use only one CPU of a multiprocessor machine. If
2121	  you say Y here, the kernel will run on many, but not all,
2122	  singleprocessor machines. On a singleprocessor machine, the kernel
2123	  will run faster if you say N here.
2124
2125	  People using multiprocessor machines who say Y here should also say
2126	  Y to "Enhanced Real Time Clock Support", below.
2127
2128	  See also the SMP-HOWTO available at
2129	  <http://www.tldp.org/docs.html#howto>.
2130
2131	  If you don't know what to do here, say N.
2132
 
 
 
 
 
 
 
 
 
 
2133config SMP_UP
2134	bool
2135
2136config SYS_SUPPORTS_MIPS_CMP
2137	bool
2138
2139config SYS_SUPPORTS_SMP
2140	bool
2141
2142config NR_CPUS_DEFAULT_1
2143	bool
2144
2145config NR_CPUS_DEFAULT_2
2146	bool
2147
2148config NR_CPUS_DEFAULT_4
2149	bool
2150
2151config NR_CPUS_DEFAULT_8
2152	bool
2153
2154config NR_CPUS_DEFAULT_16
2155	bool
2156
2157config NR_CPUS_DEFAULT_32
2158	bool
2159
2160config NR_CPUS_DEFAULT_64
2161	bool
2162
2163config NR_CPUS
2164	int "Maximum number of CPUs (2-64)"
2165	range 1 64 if NR_CPUS_DEFAULT_1
2166	depends on SMP
2167	default "1" if NR_CPUS_DEFAULT_1
2168	default "2" if NR_CPUS_DEFAULT_2
2169	default "4" if NR_CPUS_DEFAULT_4
2170	default "8" if NR_CPUS_DEFAULT_8
2171	default "16" if NR_CPUS_DEFAULT_16
2172	default "32" if NR_CPUS_DEFAULT_32
2173	default "64" if NR_CPUS_DEFAULT_64
2174	help
2175	  This allows you to specify the maximum number of CPUs which this
2176	  kernel will support.  The maximum supported value is 32 for 32-bit
2177	  kernel and 64 for 64-bit kernels; the minimum value which makes
2178	  sense is 1 for Qemu (useful only for kernel debugging purposes)
2179	  and 2 for all others.
2180
2181	  This is purely to save memory - each supported CPU adds
2182	  approximately eight kilobytes to the kernel image.  For best
2183	  performance should round up your number of processors to the next
2184	  power of two.
2185
2186source "kernel/time/Kconfig"
 
2187
2188#
2189# Timer Interrupt Frequency Configuration
2190#
2191
2192choice
2193	prompt "Timer frequency"
2194	default HZ_250
2195	help
2196	 Allows the configuration of the timer frequency.
2197
 
 
 
2198	config HZ_48
2199		bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2200
2201	config HZ_100
2202		bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2203
2204	config HZ_128
2205		bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2206
2207	config HZ_250
2208		bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2209
2210	config HZ_256
2211		bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2212
2213	config HZ_1000
2214		bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2215
2216	config HZ_1024
2217		bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2218
2219endchoice
2220
 
 
 
2221config SYS_SUPPORTS_48HZ
2222	bool
2223
2224config SYS_SUPPORTS_100HZ
2225	bool
2226
2227config SYS_SUPPORTS_128HZ
2228	bool
2229
2230config SYS_SUPPORTS_250HZ
2231	bool
2232
2233config SYS_SUPPORTS_256HZ
2234	bool
2235
2236config SYS_SUPPORTS_1000HZ
2237	bool
2238
2239config SYS_SUPPORTS_1024HZ
2240	bool
2241
2242config SYS_SUPPORTS_ARBIT_HZ
2243	bool
2244	default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2245		     !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2246		     !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
 
 
 
 
2247		     !SYS_SUPPORTS_1024HZ
2248
2249config HZ
2250	int
 
2251	default 48 if HZ_48
2252	default 100 if HZ_100
2253	default 128 if HZ_128
2254	default 250 if HZ_250
2255	default 256 if HZ_256
2256	default 1000 if HZ_1000
2257	default 1024 if HZ_1024
2258
2259source "kernel/Kconfig.preempt"
 
2260
2261config MIPS_INSANE_LARGE
2262	bool "Support for large 64-bit configurations"
2263	depends on CPU_R10000 && 64BIT
2264	help
2265	  MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2266	  previous 64-bit processors which only supported 40 bit / 1TB. If you
2267	  need processes of more than 1TB virtual address space, say Y here.
2268	  This will result in additional memory usage, so it is not
2269	  recommended for normal users.
2270
2271config KEXEC
2272	bool "Kexec system call (EXPERIMENTAL)"
2273	depends on EXPERIMENTAL
2274	help
2275	  kexec is a system call that implements the ability to shutdown your
2276	  current kernel, and to start another kernel.  It is like a reboot
2277	  but it is independent of the system firmware.   And like a reboot
2278	  you can start any kernel with it, not just Linux.
2279
2280	  The name comes from the similarity to the exec system call.
2281
2282	  It is an ongoing process to be certain the hardware in a machine
2283	  is properly shutdown, so do not be surprised if this code does not
2284	  initially work for you.  It may help to enable device hotplugging
2285	  support.  As of this writing the exact hardware interface is
2286	  strongly in flux, so no good recommendation can be made.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2287
2288config SECCOMP
2289	bool "Enable seccomp to safely compute untrusted bytecode"
2290	depends on PROC_FS
2291	default y
2292	help
2293	  This kernel feature is useful for number crunching applications
2294	  that may need to compute untrusted bytecode during their
2295	  execution. By using pipes or other transports made available to
2296	  the process as file descriptors supporting the read/write
2297	  syscalls, it's possible to isolate those applications in
2298	  their own address space using seccomp. Once seccomp is
2299	  enabled via /proc/<pid>/seccomp, it cannot be disabled
2300	  and the task is only allowed to execute a few safe syscalls
2301	  defined by each seccomp mode.
2302
2303	  If unsure, say Y. Only embedded should say N here.
2304
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2305config USE_OF
2306	bool "Flattened Device Tree support"
2307	select OF
2308	select OF_EARLY_FLATTREE
2309	help
2310	  Include support for flattened device tree machine descriptions.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2311
2312endmenu
2313
2314config LOCKDEP_SUPPORT
2315	bool
2316	default y
2317
2318config STACKTRACE_SUPPORT
2319	bool
2320	default y
2321
 
 
 
 
 
 
 
 
 
2322source "init/Kconfig"
2323
2324source "kernel/Kconfig.freezer"
2325
2326menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2327
2328config HW_HAS_EISA
2329	bool
2330config HW_HAS_PCI
2331	bool
2332
2333config PCI
2334	bool "Support for PCI controller"
2335	depends on HW_HAS_PCI
2336	select PCI_DOMAINS
2337	help
2338	  Find out whether you have a PCI motherboard. PCI is the name of a
2339	  bus system, i.e. the way the CPU talks to the other stuff inside
2340	  your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2341	  say Y, otherwise N.
2342
 
 
 
 
 
 
 
 
 
 
 
2343config PCI_DOMAINS
2344	bool
2345
 
 
 
 
 
 
 
 
 
 
 
2346source "drivers/pci/Kconfig"
2347
2348#
2349# ISA support is now enabled via select.  Too many systems still have the one
2350# or other ISA chip on the board that users don't know about so don't expect
2351# users to choose the right thing ...
2352#
2353config ISA
2354	bool
2355
2356config EISA
2357	bool "EISA support"
2358	depends on HW_HAS_EISA
2359	select ISA
2360	select GENERIC_ISA_DMA
2361	---help---
2362	  The Extended Industry Standard Architecture (EISA) bus was
2363	  developed as an open alternative to the IBM MicroChannel bus.
2364
2365	  The EISA bus provided some of the features of the IBM MicroChannel
2366	  bus while maintaining backward compatibility with cards made for
2367	  the older ISA bus.  The EISA bus saw limited use between 1988 and
2368	  1995 when it was made obsolete by the PCI bus.
2369
2370	  Say Y here if you are building a kernel for an EISA-based machine.
2371
2372	  Otherwise, say N.
2373
2374source "drivers/eisa/Kconfig"
2375
2376config TC
2377	bool "TURBOchannel support"
2378	depends on MACH_DECSTATION
2379	help
2380	  TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2381	  processors.  TURBOchannel programming specifications are available
2382	  at:
2383	  <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2384	  and:
2385	  <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2386	  Linux driver support status is documented at:
2387	  <http://www.linux-mips.org/wiki/DECstation>
2388
2389#config ACCESSBUS
2390#	bool "Access.Bus support"
2391#	depends on TC
2392
2393config MMU
2394	bool
2395	default y
2396
2397config I8253
2398	bool
2399	select CLKSRC_I8253
2400	select CLKEVT_I8253
2401	select MIPS_EXTERNAL_TIMER
2402
 
 
 
2403config ZONE_DMA32
2404	bool
2405
2406source "drivers/pcmcia/Kconfig"
2407
2408source "drivers/pci/hotplug/Kconfig"
2409
2410config RAPIDIO
2411	bool "RapidIO support"
2412	depends on PCI
2413	default n
2414	help
2415	  If you say Y here, the kernel will include drivers and
2416	  infrastructure code to support RapidIO interconnect devices.
2417
2418source "drivers/rapidio/Kconfig"
2419
2420endmenu
2421
2422menu "Executable file formats"
2423
2424source "fs/Kconfig.binfmt"
2425
2426config TRAD_SIGNALS
2427	bool
2428
2429config MIPS32_COMPAT
2430	bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2431	depends on 64BIT
2432	help
2433	  Select this option if you want Linux/MIPS 32-bit binary
2434	  compatibility. Since all software available for Linux/MIPS is
2435	  currently 32-bit you should say Y here.
2436
2437config COMPAT
2438	bool
2439	depends on MIPS32_COMPAT
2440	default y
2441
2442config SYSVIPC_COMPAT
2443	bool
2444	depends on COMPAT && SYSVIPC
2445	default y
2446
2447config MIPS32_O32
2448	bool "Kernel support for o32 binaries"
2449	depends on MIPS32_COMPAT
 
 
 
 
2450	help
2451	  Select this option if you want to run o32 binaries.  These are pure
2452	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
2453	  existing binaries are in this format.
2454
2455	  If unsure, say Y.
2456
2457config MIPS32_N32
2458	bool "Kernel support for n32 binaries"
2459	depends on MIPS32_COMPAT
 
 
 
2460	help
2461	  Select this option if you want to run n32 binaries.  These are
2462	  64-bit binaries using 32-bit quantities for addressing and certain
2463	  data that would normally be 64-bit.  They are used in special
2464	  cases.
2465
2466	  If unsure, say N.
2467
2468config BINFMT_ELF32
2469	bool
2470	default y if MIPS32_O32 || MIPS32_N32
 
2471
2472endmenu
2473
2474menu "Power management options"
2475
2476config ARCH_HIBERNATION_POSSIBLE
2477	def_bool y
2478	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2479
2480config ARCH_SUSPEND_POSSIBLE
2481	def_bool y
2482	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2483
2484source "kernel/power/Kconfig"
2485
2486endmenu
2487
2488source "arch/mips/kernel/cpufreq/Kconfig"
 
 
 
 
 
 
 
 
 
 
 
2489
2490source "net/Kconfig"
2491
2492source "drivers/Kconfig"
2493
 
 
2494source "fs/Kconfig"
2495
2496source "arch/mips/Kconfig.debug"
2497
2498source "security/Kconfig"
2499
2500source "crypto/Kconfig"
2501
2502source "lib/Kconfig"