1# SPDX-License-Identifier: GPL-2.0 2config SUPERH 3 def_bool y 4 select ARCH_HAS_BINFMT_FLAT if !MMU 5 select ARCH_HAS_PTE_SPECIAL 6 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 7 select ARCH_MIGHT_HAVE_PC_PARPORT 8 select HAVE_PATA_PLATFORM 9 select CLKDEV_LOOKUP 10 select DMA_DECLARE_COHERENT 11 select HAVE_IDE if HAS_IOPORT_MAP 12 select HAVE_OPROFILE 13 select HAVE_ARCH_TRACEHOOK 14 select HAVE_PERF_EVENTS 15 select HAVE_DEBUG_BUGVERBOSE 16 select HAVE_FAST_GUP if MMU 17 select ARCH_HAVE_CUSTOM_GPIO_H 18 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) 19 select ARCH_HAS_GCOV_PROFILE_ALL 20 select PERF_USE_VMALLOC 21 select HAVE_DEBUG_KMEMLEAK 22 select HAVE_KERNEL_GZIP 23 select CPU_NO_EFFICIENT_FFS 24 select HAVE_KERNEL_BZIP2 25 select HAVE_KERNEL_LZMA 26 select HAVE_KERNEL_XZ 27 select HAVE_KERNEL_LZO 28 select HAVE_UID16 29 select ARCH_WANT_IPC_PARSE_VERSION 30 select HAVE_SYSCALL_TRACEPOINTS 31 select HAVE_REGS_AND_STACK_ACCESS_API 32 select MAY_HAVE_SPARSE_IRQ 33 select IRQ_FORCED_THREADING 34 select RTC_LIB 35 select GENERIC_ATOMIC64 36 select GENERIC_IRQ_SHOW 37 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_IDLE_POLL_SETUP 39 select GENERIC_CLOCKEVENTS 40 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST 41 select GENERIC_PCI_IOMAP if PCI 42 select GENERIC_SCHED_CLOCK 43 select GENERIC_STRNCPY_FROM_USER 44 select GENERIC_STRNLEN_USER 45 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 46 select MODULES_USE_ELF_RELA 47 select NO_GENERIC_PCI_IOPORT_MAP if PCI 48 select OLD_SIGSUSPEND 49 select OLD_SIGACTION 50 select PCI_DOMAINS if PCI 51 select HAVE_ARCH_AUDITSYSCALL 52 select HAVE_FUTEX_CMPXCHG if FUTEX 53 select HAVE_NMI 54 select NEED_SG_DMA_LENGTH 55 select ARCH_HAS_GIGANTIC_PAGE 56 select ARCH_32BIT_OFF_T 57 select GUP_GET_PTE_LOW_HIGH if X2TLB 58 select HAVE_KPROBES 59 select HAVE_KRETPROBES 60 select HAVE_IOREMAP_PROT if MMU && !X2TLB 61 select HAVE_FUNCTION_TRACER 62 select HAVE_FTRACE_MCOUNT_RECORD 63 select HAVE_DYNAMIC_FTRACE 64 select ARCH_WANT_IPC_PARSE_VERSION 65 select HAVE_FUNCTION_GRAPH_TRACER 66 select HAVE_ARCH_KGDB 67 select HAVE_HW_BREAKPOINT 68 select HAVE_MIXED_BREAKPOINTS_REGS 69 select PERF_EVENTS 70 select ARCH_HIBERNATION_POSSIBLE if MMU 71 select SPARSE_IRQ 72 select HAVE_STACKPROTECTOR 73 help 74 The SuperH is a RISC processor targeted for use in embedded systems 75 and consumer electronics; it was also used in the Sega Dreamcast 76 gaming console. The SuperH port has a home page at 77 <http://www.linux-sh.org/>. 78 79config GENERIC_BUG 80 def_bool y 81 depends on BUG 82 83config GENERIC_HWEIGHT 84 def_bool y 85 86config GENERIC_CALIBRATE_DELAY 87 bool 88 89config GENERIC_LOCKBREAK 90 def_bool y 91 depends on SMP && PREEMPTION 92 93config ARCH_SUSPEND_POSSIBLE 94 def_bool n 95 96config ARCH_HIBERNATION_POSSIBLE 97 def_bool n 98 99config SYS_SUPPORTS_APM_EMULATION 100 bool 101 select ARCH_SUSPEND_POSSIBLE 102 103config SYS_SUPPORTS_HUGETLBFS 104 bool 105 106config SYS_SUPPORTS_SMP 107 bool 108 109config SYS_SUPPORTS_NUMA 110 bool 111 112config STACKTRACE_SUPPORT 113 def_bool y 114 115config LOCKDEP_SUPPORT 116 def_bool y 117 118config ARCH_HAS_ILOG2_U32 119 def_bool n 120 121config ARCH_HAS_ILOG2_U64 122 def_bool n 123 124config NO_IOPORT_MAP 125 def_bool !PCI 126 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \ 127 !SH_HP6XX && !SH_SOLUTION_ENGINE 128 129config IO_TRAPPED 130 bool 131 132config SWAP_IO_SPACE 133 bool 134 135config DMA_COHERENT 136 bool 137 138config DMA_NONCOHERENT 139 def_bool !DMA_COHERENT 140 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 141 142config PGTABLE_LEVELS 143 default 3 if X2TLB 144 default 2 145 146menu "System type" 147 148# 149# Processor families 150# 151config CPU_SH2 152 bool 153 select SH_INTC 154 155config CPU_SH2A 156 bool 157 select CPU_SH2 158 select UNCACHED_MAPPING 159 160config CPU_J2 161 bool 162 select CPU_SH2 163 select OF 164 select OF_EARLY_FLATTREE 165 166config CPU_SH3 167 bool 168 select CPU_HAS_INTEVT 169 select CPU_HAS_SR_RB 170 select SH_INTC 171 select SYS_SUPPORTS_SH_TMU 172 173config CPU_SH4 174 bool 175 select CPU_HAS_INTEVT 176 select CPU_HAS_SR_RB 177 select CPU_HAS_FPU if !CPU_SH4AL_DSP 178 select SH_INTC 179 select SYS_SUPPORTS_SH_TMU 180 select SYS_SUPPORTS_HUGETLBFS if MMU 181 182config CPU_SH4A 183 bool 184 select CPU_SH4 185 186config CPU_SH4AL_DSP 187 bool 188 select CPU_SH4A 189 select CPU_HAS_DSP 190 191config CPU_SHX2 192 bool 193 194config CPU_SHX3 195 bool 196 select DMA_COHERENT 197 select SYS_SUPPORTS_SMP 198 select SYS_SUPPORTS_NUMA 199 200config ARCH_SHMOBILE 201 bool 202 select ARCH_SUSPEND_POSSIBLE 203 select PM 204 205config CPU_HAS_PMU 206 depends on CPU_SH4 || CPU_SH4A 207 default y 208 bool 209 210choice 211 prompt "Processor sub-type selection" 212 213# 214# Processor subtypes 215# 216 217# SH-2 Processor Support 218 219config CPU_SUBTYPE_SH7619 220 bool "Support SH7619 processor" 221 select CPU_SH2 222 select SYS_SUPPORTS_SH_CMT 223 224config CPU_SUBTYPE_J2 225 bool "Support J2 processor" 226 select CPU_J2 227 select SYS_SUPPORTS_SMP 228 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 229 230# SH-2A Processor Support 231 232config CPU_SUBTYPE_SH7201 233 bool "Support SH7201 processor" 234 select CPU_SH2A 235 select CPU_HAS_FPU 236 select SYS_SUPPORTS_SH_MTU2 237 238config CPU_SUBTYPE_SH7203 239 bool "Support SH7203 processor" 240 select CPU_SH2A 241 select CPU_HAS_FPU 242 select SYS_SUPPORTS_SH_CMT 243 select SYS_SUPPORTS_SH_MTU2 244 select PINCTRL 245 246config CPU_SUBTYPE_SH7206 247 bool "Support SH7206 processor" 248 select CPU_SH2A 249 select SYS_SUPPORTS_SH_CMT 250 select SYS_SUPPORTS_SH_MTU2 251 252config CPU_SUBTYPE_SH7263 253 bool "Support SH7263 processor" 254 select CPU_SH2A 255 select CPU_HAS_FPU 256 select SYS_SUPPORTS_SH_CMT 257 select SYS_SUPPORTS_SH_MTU2 258 259config CPU_SUBTYPE_SH7264 260 bool "Support SH7264 processor" 261 select CPU_SH2A 262 select CPU_HAS_FPU 263 select SYS_SUPPORTS_SH_CMT 264 select SYS_SUPPORTS_SH_MTU2 265 select PINCTRL 266 267config CPU_SUBTYPE_SH7269 268 bool "Support SH7269 processor" 269 select CPU_SH2A 270 select CPU_HAS_FPU 271 select SYS_SUPPORTS_SH_CMT 272 select SYS_SUPPORTS_SH_MTU2 273 select PINCTRL 274 275config CPU_SUBTYPE_MXG 276 bool "Support MX-G processor" 277 select CPU_SH2A 278 select SYS_SUPPORTS_SH_MTU2 279 help 280 Select MX-G if running on an R8A03022BG part. 281 282# SH-3 Processor Support 283 284config CPU_SUBTYPE_SH7705 285 bool "Support SH7705 processor" 286 select CPU_SH3 287 288config CPU_SUBTYPE_SH7706 289 bool "Support SH7706 processor" 290 select CPU_SH3 291 help 292 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 293 294config CPU_SUBTYPE_SH7707 295 bool "Support SH7707 processor" 296 select CPU_SH3 297 help 298 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 299 300config CPU_SUBTYPE_SH7708 301 bool "Support SH7708 processor" 302 select CPU_SH3 303 help 304 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 305 if you have a 100 Mhz SH-3 HD6417708R CPU. 306 307config CPU_SUBTYPE_SH7709 308 bool "Support SH7709 processor" 309 select CPU_SH3 310 help 311 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 312 313config CPU_SUBTYPE_SH7710 314 bool "Support SH7710 processor" 315 select CPU_SH3 316 select CPU_HAS_DSP 317 help 318 Select SH7710 if you have a SH3-DSP SH7710 CPU. 319 320config CPU_SUBTYPE_SH7712 321 bool "Support SH7712 processor" 322 select CPU_SH3 323 select CPU_HAS_DSP 324 help 325 Select SH7712 if you have a SH3-DSP SH7712 CPU. 326 327config CPU_SUBTYPE_SH7720 328 bool "Support SH7720 processor" 329 select CPU_SH3 330 select CPU_HAS_DSP 331 select SYS_SUPPORTS_SH_CMT 332 select USB_OHCI_SH if USB_OHCI_HCD 333 select PINCTRL 334 help 335 Select SH7720 if you have a SH3-DSP SH7720 CPU. 336 337config CPU_SUBTYPE_SH7721 338 bool "Support SH7721 processor" 339 select CPU_SH3 340 select CPU_HAS_DSP 341 select SYS_SUPPORTS_SH_CMT 342 select USB_OHCI_SH if USB_OHCI_HCD 343 help 344 Select SH7721 if you have a SH3-DSP SH7721 CPU. 345 346# SH-4 Processor Support 347 348config CPU_SUBTYPE_SH7750 349 bool "Support SH7750 processor" 350 select CPU_SH4 351 help 352 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 353 354config CPU_SUBTYPE_SH7091 355 bool "Support SH7091 processor" 356 select CPU_SH4 357 help 358 Select SH7091 if you have an SH-4 based Sega device (such as 359 the Dreamcast, Naomi, and Naomi 2). 360 361config CPU_SUBTYPE_SH7750R 362 bool "Support SH7750R processor" 363 select CPU_SH4 364 365config CPU_SUBTYPE_SH7750S 366 bool "Support SH7750S processor" 367 select CPU_SH4 368 369config CPU_SUBTYPE_SH7751 370 bool "Support SH7751 processor" 371 select CPU_SH4 372 help 373 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 374 or if you have a HD6417751R CPU. 375 376config CPU_SUBTYPE_SH7751R 377 bool "Support SH7751R processor" 378 select CPU_SH4 379 380config CPU_SUBTYPE_SH7760 381 bool "Support SH7760 processor" 382 select CPU_SH4 383 384config CPU_SUBTYPE_SH4_202 385 bool "Support SH4-202 processor" 386 select CPU_SH4 387 388# SH-4A Processor Support 389 390config CPU_SUBTYPE_SH7723 391 bool "Support SH7723 processor" 392 select CPU_SH4A 393 select CPU_SHX2 394 select ARCH_SHMOBILE 395 select ARCH_SPARSEMEM_ENABLE 396 select SYS_SUPPORTS_SH_CMT 397 select PINCTRL 398 help 399 Select SH7723 if you have an SH-MobileR2 CPU. 400 401config CPU_SUBTYPE_SH7724 402 bool "Support SH7724 processor" 403 select CPU_SH4A 404 select CPU_SHX2 405 select ARCH_SHMOBILE 406 select ARCH_SPARSEMEM_ENABLE 407 select SYS_SUPPORTS_SH_CMT 408 select PINCTRL 409 help 410 Select SH7724 if you have an SH-MobileR2R CPU. 411 412config CPU_SUBTYPE_SH7734 413 bool "Support SH7734 processor" 414 select CPU_SH4A 415 select CPU_SHX2 416 select PINCTRL 417 help 418 Select SH7734 if you have a SH4A SH7734 CPU. 419 420config CPU_SUBTYPE_SH7757 421 bool "Support SH7757 processor" 422 select CPU_SH4A 423 select CPU_SHX2 424 select PINCTRL 425 help 426 Select SH7757 if you have a SH4A SH7757 CPU. 427 428config CPU_SUBTYPE_SH7763 429 bool "Support SH7763 processor" 430 select CPU_SH4A 431 select USB_OHCI_SH if USB_OHCI_HCD 432 help 433 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 434 435config CPU_SUBTYPE_SH7770 436 bool "Support SH7770 processor" 437 select CPU_SH4A 438 439config CPU_SUBTYPE_SH7780 440 bool "Support SH7780 processor" 441 select CPU_SH4A 442 443config CPU_SUBTYPE_SH7785 444 bool "Support SH7785 processor" 445 select CPU_SH4A 446 select CPU_SHX2 447 select ARCH_SPARSEMEM_ENABLE 448 select SYS_SUPPORTS_NUMA 449 select PINCTRL 450 451config CPU_SUBTYPE_SH7786 452 bool "Support SH7786 processor" 453 select CPU_SH4A 454 select CPU_SHX3 455 select CPU_HAS_PTEAEX 456 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 457 select USB_OHCI_SH if USB_OHCI_HCD 458 select USB_EHCI_SH if USB_EHCI_HCD 459 select PINCTRL 460 461config CPU_SUBTYPE_SHX3 462 bool "Support SH-X3 processor" 463 select CPU_SH4A 464 select CPU_SHX3 465 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 466 select GPIOLIB 467 select PINCTRL 468 469# SH4AL-DSP Processor Support 470 471config CPU_SUBTYPE_SH7343 472 bool "Support SH7343 processor" 473 select CPU_SH4AL_DSP 474 select ARCH_SHMOBILE 475 select SYS_SUPPORTS_SH_CMT 476 477config CPU_SUBTYPE_SH7722 478 bool "Support SH7722 processor" 479 select CPU_SH4AL_DSP 480 select CPU_SHX2 481 select ARCH_SHMOBILE 482 select ARCH_SPARSEMEM_ENABLE 483 select SYS_SUPPORTS_NUMA 484 select SYS_SUPPORTS_SH_CMT 485 select PINCTRL 486 487config CPU_SUBTYPE_SH7366 488 bool "Support SH7366 processor" 489 select CPU_SH4AL_DSP 490 select CPU_SHX2 491 select ARCH_SHMOBILE 492 select ARCH_SPARSEMEM_ENABLE 493 select SYS_SUPPORTS_NUMA 494 select SYS_SUPPORTS_SH_CMT 495 496endchoice 497 498source "arch/sh/mm/Kconfig" 499 500source "arch/sh/Kconfig.cpu" 501 502source "arch/sh/boards/Kconfig" 503 504menu "Timer and clock configuration" 505 506config SH_PCLK_FREQ 507 int "Peripheral clock frequency (in Hz)" 508 depends on SH_CLK_CPG_LEGACY 509 default "31250000" if CPU_SUBTYPE_SH7619 510 default "33333333" if CPU_SUBTYPE_SH7770 || \ 511 CPU_SUBTYPE_SH7760 || \ 512 CPU_SUBTYPE_SH7705 || \ 513 CPU_SUBTYPE_SH7203 || \ 514 CPU_SUBTYPE_SH7206 || \ 515 CPU_SUBTYPE_SH7263 || \ 516 CPU_SUBTYPE_MXG 517 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 518 default "66000000" if CPU_SUBTYPE_SH4_202 519 default "50000000" 520 help 521 This option is used to specify the peripheral clock frequency. 522 This is necessary for determining the reference clock value on 523 platforms lacking an RTC. 524 525config SH_CLK_CPG 526 def_bool y 527 528config SH_CLK_CPG_LEGACY 529 depends on SH_CLK_CPG 530 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 531 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 532 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 533 !CPU_SUBTYPE_SH7269 534 535endmenu 536 537menu "CPU Frequency scaling" 538source "drivers/cpufreq/Kconfig" 539endmenu 540 541source "arch/sh/drivers/Kconfig" 542 543endmenu 544 545menu "Kernel features" 546 547source "kernel/Kconfig.hz" 548 549config KEXEC 550 bool "kexec system call (EXPERIMENTAL)" 551 depends on MMU 552 select KEXEC_CORE 553 help 554 kexec is a system call that implements the ability to shutdown your 555 current kernel, and to start another kernel. It is like a reboot 556 but it is independent of the system firmware. And like a reboot 557 you can start any kernel with it, not just Linux. 558 559 The name comes from the similarity to the exec system call. 560 561 It is an ongoing process to be certain the hardware in a machine 562 is properly shutdown, so do not be surprised if this code does not 563 initially work for you. As of this writing the exact hardware 564 interface is strongly in flux, so no good recommendation can be 565 made. 566 567config CRASH_DUMP 568 bool "kernel crash dumps (EXPERIMENTAL)" 569 depends on BROKEN_ON_SMP 570 help 571 Generate crash dump after being started by kexec. 572 This should be normally only set in special crash dump kernels 573 which are loaded in the main kernel with kexec-tools into 574 a specially reserved region and then later executed after 575 a crash by kdump/kexec. The crash dump kernel must be compiled 576 to a memory address not used by the main kernel using 577 PHYSICAL_START. 578 579 For more details see Documentation/admin-guide/kdump/kdump.rst 580 581config KEXEC_JUMP 582 bool "kexec jump (EXPERIMENTAL)" 583 depends on KEXEC && HIBERNATION 584 help 585 Jump between original kernel and kexeced kernel and invoke 586 code via KEXEC 587 588config PHYSICAL_START 589 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 590 default MEMORY_START 591 help 592 This gives the physical address where the kernel is loaded 593 and is ordinarily the same as MEMORY_START. 594 595 Different values are primarily used in the case of kexec on panic 596 where the fail safe kernel needs to run at a different address 597 than the panic-ed kernel. 598 599config SECCOMP 600 bool "Enable seccomp to safely compute untrusted bytecode" 601 depends on PROC_FS 602 help 603 This kernel feature is useful for number crunching applications 604 that may need to compute untrusted bytecode during their 605 execution. By using pipes or other transports made available to 606 the process as file descriptors supporting the read/write 607 syscalls, it's possible to isolate those applications in 608 their own address space using seccomp. Once seccomp is 609 enabled via prctl, it cannot be disabled and the task is only 610 allowed to execute a few safe syscalls defined by each seccomp 611 mode. 612 613 If unsure, say N. 614 615config SMP 616 bool "Symmetric multi-processing support" 617 depends on SYS_SUPPORTS_SMP 618 help 619 This enables support for systems with more than one CPU. If you have 620 a system with only one CPU, say N. If you have a system with more 621 than one CPU, say Y. 622 623 If you say N here, the kernel will run on uni- and multiprocessor 624 machines, but will use only one CPU of a multiprocessor machine. If 625 you say Y here, the kernel will run on many, but not all, 626 uniprocessor machines. On a uniprocessor machine, the kernel 627 will run faster if you say N here. 628 629 People using multiprocessor machines who say Y here should also say 630 Y to "Enhanced Real Time Clock Support", below. 631 632 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 633 available at <http://www.tldp.org/docs.html#howto>. 634 635 If you don't know what to do here, say N. 636 637config NR_CPUS 638 int "Maximum number of CPUs (2-32)" 639 range 2 32 640 depends on SMP 641 default "4" if CPU_SUBTYPE_SHX3 642 default "2" 643 help 644 This allows you to specify the maximum number of CPUs which this 645 kernel will support. The maximum supported value is 32 and the 646 minimum value which makes sense is 2. 647 648 This is purely to save memory - each supported CPU adds 649 approximately eight kilobytes to the kernel image. 650 651config HOTPLUG_CPU 652 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 653 depends on SMP 654 help 655 Say Y here to experiment with turning CPUs off and on. CPUs 656 can be controlled through /sys/devices/system/cpu. 657 658config GUSA 659 def_bool y 660 depends on !SMP 661 help 662 This enables support for gUSA (general UserSpace Atomicity). 663 This is the default implementation for both UP and non-ll/sc 664 CPUs, and is used by the libc, amongst others. 665 666 For additional information, design information can be found 667 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 668 669 This should only be disabled for special cases where alternate 670 atomicity implementations exist. 671 672config GUSA_RB 673 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 674 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 675 help 676 Enabling this option will allow the kernel to implement some 677 atomic operations using a software implementation of load-locked/ 678 store-conditional (LLSC). On machines which do not have hardware 679 LLSC, this should be more efficient than the other alternative of 680 disabling interrupts around the atomic sequence. 681 682config HW_PERF_EVENTS 683 bool "Enable hardware performance counter support for perf events" 684 depends on PERF_EVENTS && CPU_HAS_PMU 685 default y 686 help 687 Enable hardware performance counter support for perf events. If 688 disabled, perf events will use software events only. 689 690source "drivers/sh/Kconfig" 691 692endmenu 693 694menu "Boot options" 695 696config USE_BUILTIN_DTB 697 bool "Use builtin DTB" 698 default n 699 depends on SH_DEVICE_TREE 700 help 701 Link a device tree blob for particular hardware into the kernel, 702 suppressing use of the DTB pointer provided by the bootloader. 703 This option should only be used with legacy bootloaders that are 704 not capable of providing a DTB to the kernel, or for experimental 705 hardware without stable device tree bindings. 706 707config BUILTIN_DTB_SOURCE 708 string "Source file for builtin DTB" 709 default "" 710 depends on USE_BUILTIN_DTB 711 help 712 Base name (without suffix, relative to arch/sh/boot/dts) for the 713 a DTS file that will be used to produce the DTB linked into the 714 kernel. 715 716config ZERO_PAGE_OFFSET 717 hex 718 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 719 SH_7751_SOLUTION_ENGINE 720 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 721 default "0x00002000" if PAGE_SIZE_8KB 722 default "0x00001000" 723 help 724 This sets the default offset of zero page. 725 726config BOOT_LINK_OFFSET 727 hex 728 default "0x00210000" if SH_SHMIN 729 default "0x00400000" if SH_CAYMAN 730 default "0x00810000" if SH_7780_SOLUTION_ENGINE 731 default "0x009e0000" if SH_TITAN 732 default "0x01800000" if SH_SDK7780 733 default "0x02000000" if SH_EDOSK7760 734 default "0x00800000" 735 help 736 This option allows you to set the link address offset of the zImage. 737 This can be useful if you are on a board which has a small amount of 738 memory. 739 740config ENTRY_OFFSET 741 hex 742 default "0x00001000" if PAGE_SIZE_4KB 743 default "0x00002000" if PAGE_SIZE_8KB 744 default "0x00004000" if PAGE_SIZE_16KB 745 default "0x00010000" if PAGE_SIZE_64KB 746 default "0x00000000" 747 748config ROMIMAGE_MMCIF 749 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 750 depends on CPU_SUBTYPE_SH7724 751 help 752 Say Y here to include experimental MMCIF loading code in 753 romImage. With this enabled it is possible to write the romImage 754 kernel image to an MMC card and boot the kernel straight from 755 the reset vector. At reset the processor Mask ROM will load the 756 first part of the romImage which in turn loads the rest the kernel 757 image to RAM using the MMCIF hardware block. 758 759choice 760 prompt "Kernel command line" 761 optional 762 default CMDLINE_OVERWRITE 763 help 764 Setting this option allows the kernel command line arguments 765 to be set. 766 767config CMDLINE_OVERWRITE 768 bool "Overwrite bootloader kernel arguments" 769 help 770 Given string will overwrite any arguments passed in by 771 a bootloader. 772 773config CMDLINE_EXTEND 774 bool "Extend bootloader kernel arguments" 775 help 776 Given string will be concatenated with arguments passed in 777 by a bootloader. 778 779endchoice 780 781config CMDLINE 782 string "Kernel command line arguments string" 783 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 784 default "console=ttySC1,115200" 785 786endmenu 787 788menu "Bus options" 789 790config SUPERHYWAY 791 tristate "SuperHyway Bus support" 792 depends on CPU_SUBTYPE_SH4_202 793 794config MAPLE 795 bool "Maple Bus support" 796 depends on SH_DREAMCAST 797 help 798 The Maple Bus is SEGA's serial communication bus for peripherals 799 on the Dreamcast. Without this bus support you won't be able to 800 get your Dreamcast keyboard etc to work, so most users 801 probably want to say 'Y' here, unless you are only using the 802 Dreamcast with a serial line terminal or a remote network 803 connection. 804 805endmenu 806 807menu "Power management options (EXPERIMENTAL)" 808 809source "kernel/power/Kconfig" 810 811source "drivers/cpuidle/Kconfig" 812 813endmenu 814