1# SPDX-License-Identifier: GPL-2.0 2config SUPERH 3 def_bool y 4 select ARCH_32BIT_OFF_T 5 select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU 6 select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU 7 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) 8 select ARCH_HAS_BINFMT_FLAT if !MMU 9 select ARCH_HAS_CPU_FINALIZE_INIT 10 select ARCH_HAS_CURRENT_STACK_POINTER 11 select ARCH_HAS_GIGANTIC_PAGE 12 select ARCH_HAS_GCOV_PROFILE_ALL 13 select ARCH_HAS_PTE_SPECIAL 14 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 15 select ARCH_HIBERNATION_POSSIBLE if MMU 16 select ARCH_MIGHT_HAVE_PC_PARPORT 17 select ARCH_WANT_IPC_PARSE_VERSION 18 select CPU_NO_EFFICIENT_FFS 19 select DMA_DECLARE_COHERENT 20 select GENERIC_ATOMIC64 21 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST 22 select GENERIC_IDLE_POLL_SETUP 23 select GENERIC_IRQ_SHOW 24 select GENERIC_LIB_ASHLDI3 25 select GENERIC_LIB_ASHRDI3 26 select GENERIC_LIB_LSHRDI3 27 select GENERIC_PCI_IOMAP if PCI 28 select GENERIC_SCHED_CLOCK 29 select GENERIC_SMP_IDLE_THREAD 30 select GUP_GET_PXX_LOW_HIGH if X2TLB 31 select HAS_IOPORT if HAS_IOPORT_MAP 32 select GENERIC_IOREMAP if MMU 33 select HAVE_ARCH_AUDITSYSCALL 34 select HAVE_ARCH_KGDB 35 select HAVE_ARCH_SECCOMP_FILTER 36 select HAVE_ARCH_TRACEHOOK 37 select HAVE_DEBUG_BUGVERBOSE 38 select HAVE_DEBUG_KMEMLEAK 39 select HAVE_DYNAMIC_FTRACE 40 select HAVE_FAST_GUP if MMU 41 select HAVE_FUNCTION_GRAPH_TRACER 42 select HAVE_FUNCTION_TRACER 43 select HAVE_FTRACE_MCOUNT_RECORD 44 select HAVE_HW_BREAKPOINT 45 select HAVE_IOREMAP_PROT if MMU && !X2TLB 46 select HAVE_KERNEL_BZIP2 47 select HAVE_KERNEL_GZIP 48 select HAVE_KERNEL_LZMA 49 select HAVE_KERNEL_LZO 50 select HAVE_KERNEL_XZ 51 select HAVE_KPROBES 52 select HAVE_KRETPROBES 53 select HAVE_MIXED_BREAKPOINTS_REGS 54 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 55 select HAVE_NMI 56 select HAVE_PATA_PLATFORM 57 select HAVE_PERF_EVENTS 58 select HAVE_REGS_AND_STACK_ACCESS_API 59 select HAVE_UID16 60 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 61 select HAVE_STACKPROTECTOR 62 select HAVE_SYSCALL_TRACEPOINTS 63 select IRQ_FORCED_THREADING 64 select LOCK_MM_AND_FIND_VMA 65 select MODULES_USE_ELF_RELA 66 select NEED_SG_DMA_LENGTH 67 select NO_DMA if !MMU && !DMA_COHERENT 68 select NO_GENERIC_PCI_IOPORT_MAP if PCI 69 select OLD_SIGACTION 70 select OLD_SIGSUSPEND 71 select PCI_DOMAINS if PCI 72 select PERF_EVENTS 73 select PERF_USE_VMALLOC 74 select RTC_LIB 75 select SPARSE_IRQ 76 select TRACE_IRQFLAGS_SUPPORT 77 help 78 The SuperH is a RISC processor targeted for use in embedded systems 79 and consumer electronics; it was also used in the Sega Dreamcast 80 gaming console. The SuperH port has a home page at 81 <http://www.linux-sh.org/>. 82 83config GENERIC_BUG 84 def_bool y 85 depends on BUG 86 87config GENERIC_HWEIGHT 88 def_bool y 89 90config GENERIC_CALIBRATE_DELAY 91 bool 92 93config GENERIC_LOCKBREAK 94 def_bool y 95 depends on SMP && PREEMPTION 96 97config ARCH_SUSPEND_POSSIBLE 98 def_bool n 99 100config ARCH_HIBERNATION_POSSIBLE 101 def_bool n 102 103config SYS_SUPPORTS_APM_EMULATION 104 bool 105 select ARCH_SUSPEND_POSSIBLE 106 107config SYS_SUPPORTS_SMP 108 bool 109 110config SYS_SUPPORTS_NUMA 111 bool 112 113config STACKTRACE_SUPPORT 114 def_bool y 115 116config LOCKDEP_SUPPORT 117 def_bool y 118 119config ARCH_HAS_ILOG2_U32 120 def_bool n 121 122config ARCH_HAS_ILOG2_U64 123 def_bool n 124 125config NO_IOPORT_MAP 126 def_bool !PCI 127 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \ 128 !SH_SOLUTION_ENGINE 129 130config IO_TRAPPED 131 bool 132 133config SWAP_IO_SPACE 134 bool 135 136config DMA_COHERENT 137 bool 138 139config DMA_NONCOHERENT 140 def_bool !NO_DMA && !DMA_COHERENT 141 select ARCH_HAS_DMA_PREP_COHERENT 142 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 143 select DMA_DIRECT_REMAP 144 145config PGTABLE_LEVELS 146 default 3 if X2TLB 147 default 2 148 149menu "System type" 150 151# 152# Processor families 153# 154config CPU_SH2 155 bool 156 select SH_INTC 157 158config CPU_SH2A 159 bool 160 select CPU_SH2 161 select UNCACHED_MAPPING 162 163config CPU_J2 164 bool 165 select CPU_SH2 166 select OF 167 select OF_EARLY_FLATTREE 168 169config CPU_SH3 170 bool 171 select CPU_HAS_INTEVT 172 select CPU_HAS_SR_RB 173 select SH_INTC 174 select SYS_SUPPORTS_SH_TMU 175 176config CPU_SH4 177 bool 178 select ARCH_SUPPORTS_HUGETLBFS if MMU 179 select CPU_HAS_INTEVT 180 select CPU_HAS_SR_RB 181 select CPU_HAS_FPU if !CPU_SH4AL_DSP 182 select SH_INTC 183 select SYS_SUPPORTS_SH_TMU 184 185config CPU_SH4A 186 bool 187 select CPU_SH4 188 189config CPU_SH4AL_DSP 190 bool 191 select CPU_SH4A 192 select CPU_HAS_DSP 193 194config CPU_SHX2 195 bool 196 197config CPU_SHX3 198 bool 199 select DMA_COHERENT 200 select SYS_SUPPORTS_SMP 201 select SYS_SUPPORTS_NUMA 202 203config ARCH_SHMOBILE 204 bool 205 select ARCH_SUSPEND_POSSIBLE 206 select PM 207 208config CPU_HAS_PMU 209 depends on CPU_SH4 || CPU_SH4A 210 default y 211 bool 212 213choice 214 prompt "Processor sub-type selection" 215 216# 217# Processor subtypes 218# 219 220# SH-2 Processor Support 221 222config CPU_SUBTYPE_SH7619 223 bool "Support SH7619 processor" 224 select CPU_SH2 225 select SYS_SUPPORTS_SH_CMT 226 227config CPU_SUBTYPE_J2 228 bool "Support J2 processor" 229 select CPU_J2 230 select SYS_SUPPORTS_SMP 231 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 232 233# SH-2A Processor Support 234 235config CPU_SUBTYPE_SH7201 236 bool "Support SH7201 processor" 237 select CPU_SH2A 238 select CPU_HAS_FPU 239 select SYS_SUPPORTS_SH_MTU2 240 241config CPU_SUBTYPE_SH7203 242 bool "Support SH7203 processor" 243 select CPU_SH2A 244 select CPU_HAS_FPU 245 select SYS_SUPPORTS_SH_CMT 246 select SYS_SUPPORTS_SH_MTU2 247 select PINCTRL 248 249config CPU_SUBTYPE_SH7206 250 bool "Support SH7206 processor" 251 select CPU_SH2A 252 select SYS_SUPPORTS_SH_CMT 253 select SYS_SUPPORTS_SH_MTU2 254 255config CPU_SUBTYPE_SH7263 256 bool "Support SH7263 processor" 257 select CPU_SH2A 258 select CPU_HAS_FPU 259 select SYS_SUPPORTS_SH_CMT 260 select SYS_SUPPORTS_SH_MTU2 261 262config CPU_SUBTYPE_SH7264 263 bool "Support SH7264 processor" 264 select CPU_SH2A 265 select CPU_HAS_FPU 266 select SYS_SUPPORTS_SH_CMT 267 select SYS_SUPPORTS_SH_MTU2 268 select PINCTRL 269 270config CPU_SUBTYPE_SH7269 271 bool "Support SH7269 processor" 272 select CPU_SH2A 273 select CPU_HAS_FPU 274 select SYS_SUPPORTS_SH_CMT 275 select SYS_SUPPORTS_SH_MTU2 276 select PINCTRL 277 278config CPU_SUBTYPE_MXG 279 bool "Support MX-G processor" 280 select CPU_SH2A 281 select SYS_SUPPORTS_SH_MTU2 282 help 283 Select MX-G if running on an R8A03022BG part. 284 285# SH-3 Processor Support 286 287config CPU_SUBTYPE_SH7705 288 bool "Support SH7705 processor" 289 select CPU_SH3 290 291config CPU_SUBTYPE_SH7706 292 bool "Support SH7706 processor" 293 select CPU_SH3 294 help 295 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 296 297config CPU_SUBTYPE_SH7707 298 bool "Support SH7707 processor" 299 select CPU_SH3 300 help 301 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 302 303config CPU_SUBTYPE_SH7708 304 bool "Support SH7708 processor" 305 select CPU_SH3 306 help 307 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 308 if you have a 100 Mhz SH-3 HD6417708R CPU. 309 310config CPU_SUBTYPE_SH7709 311 bool "Support SH7709 processor" 312 select CPU_SH3 313 help 314 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 315 316config CPU_SUBTYPE_SH7710 317 bool "Support SH7710 processor" 318 select CPU_SH3 319 select CPU_HAS_DSP 320 help 321 Select SH7710 if you have a SH3-DSP SH7710 CPU. 322 323config CPU_SUBTYPE_SH7712 324 bool "Support SH7712 processor" 325 select CPU_SH3 326 select CPU_HAS_DSP 327 help 328 Select SH7712 if you have a SH3-DSP SH7712 CPU. 329 330config CPU_SUBTYPE_SH7720 331 bool "Support SH7720 processor" 332 select CPU_SH3 333 select CPU_HAS_DSP 334 select SYS_SUPPORTS_SH_CMT 335 select USB_OHCI_SH if USB_OHCI_HCD 336 select PINCTRL 337 help 338 Select SH7720 if you have a SH3-DSP SH7720 CPU. 339 340config CPU_SUBTYPE_SH7721 341 bool "Support SH7721 processor" 342 select CPU_SH3 343 select CPU_HAS_DSP 344 select SYS_SUPPORTS_SH_CMT 345 select USB_OHCI_SH if USB_OHCI_HCD 346 help 347 Select SH7721 if you have a SH3-DSP SH7721 CPU. 348 349# SH-4 Processor Support 350 351config CPU_SUBTYPE_SH7750 352 bool "Support SH7750 processor" 353 select CPU_SH4 354 help 355 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 356 357config CPU_SUBTYPE_SH7091 358 bool "Support SH7091 processor" 359 select CPU_SH4 360 help 361 Select SH7091 if you have an SH-4 based Sega device (such as 362 the Dreamcast, Naomi, and Naomi 2). 363 364config CPU_SUBTYPE_SH7750R 365 bool "Support SH7750R processor" 366 select CPU_SH4 367 368config CPU_SUBTYPE_SH7750S 369 bool "Support SH7750S processor" 370 select CPU_SH4 371 372config CPU_SUBTYPE_SH7751 373 bool "Support SH7751 processor" 374 select CPU_SH4 375 help 376 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 377 or if you have a HD6417751R CPU. 378 379config CPU_SUBTYPE_SH7751R 380 bool "Support SH7751R processor" 381 select CPU_SH4 382 383config CPU_SUBTYPE_SH7760 384 bool "Support SH7760 processor" 385 select CPU_SH4 386 387config CPU_SUBTYPE_SH4_202 388 bool "Support SH4-202 processor" 389 select CPU_SH4 390 391# SH-4A Processor Support 392 393config CPU_SUBTYPE_SH7723 394 bool "Support SH7723 processor" 395 select CPU_SH4A 396 select CPU_SHX2 397 select ARCH_SHMOBILE 398 select ARCH_SPARSEMEM_ENABLE 399 select SYS_SUPPORTS_SH_CMT 400 select PINCTRL 401 help 402 Select SH7723 if you have an SH-MobileR2 CPU. 403 404config CPU_SUBTYPE_SH7724 405 bool "Support SH7724 processor" 406 select CPU_SH4A 407 select CPU_SHX2 408 select ARCH_SHMOBILE 409 select ARCH_SPARSEMEM_ENABLE 410 select SYS_SUPPORTS_SH_CMT 411 select PINCTRL 412 help 413 Select SH7724 if you have an SH-MobileR2R CPU. 414 415config CPU_SUBTYPE_SH7734 416 bool "Support SH7734 processor" 417 select CPU_SH4A 418 select CPU_SHX2 419 select PINCTRL 420 help 421 Select SH7734 if you have a SH4A SH7734 CPU. 422 423config CPU_SUBTYPE_SH7757 424 bool "Support SH7757 processor" 425 select CPU_SH4A 426 select CPU_SHX2 427 select PINCTRL 428 help 429 Select SH7757 if you have a SH4A SH7757 CPU. 430 431config CPU_SUBTYPE_SH7763 432 bool "Support SH7763 processor" 433 select CPU_SH4A 434 select USB_OHCI_SH if USB_OHCI_HCD 435 help 436 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 437 438config CPU_SUBTYPE_SH7770 439 bool "Support SH7770 processor" 440 select CPU_SH4A 441 442config CPU_SUBTYPE_SH7780 443 bool "Support SH7780 processor" 444 select CPU_SH4A 445 446config CPU_SUBTYPE_SH7785 447 bool "Support SH7785 processor" 448 select CPU_SH4A 449 select CPU_SHX2 450 select ARCH_SPARSEMEM_ENABLE 451 select SYS_SUPPORTS_NUMA 452 select PINCTRL 453 454config CPU_SUBTYPE_SH7786 455 bool "Support SH7786 processor" 456 select CPU_SH4A 457 select CPU_SHX3 458 select CPU_HAS_PTEAEX 459 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 460 select USB_OHCI_SH if USB_OHCI_HCD 461 select USB_EHCI_SH if USB_EHCI_HCD 462 select PINCTRL 463 464config CPU_SUBTYPE_SHX3 465 bool "Support SH-X3 processor" 466 select CPU_SH4A 467 select CPU_SHX3 468 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 469 select GPIOLIB 470 select PINCTRL 471 472# SH4AL-DSP Processor Support 473 474config CPU_SUBTYPE_SH7343 475 bool "Support SH7343 processor" 476 select CPU_SH4AL_DSP 477 select ARCH_SHMOBILE 478 select SYS_SUPPORTS_SH_CMT 479 480config CPU_SUBTYPE_SH7722 481 bool "Support SH7722 processor" 482 select CPU_SH4AL_DSP 483 select CPU_SHX2 484 select ARCH_SHMOBILE 485 select ARCH_SPARSEMEM_ENABLE 486 select SYS_SUPPORTS_NUMA 487 select SYS_SUPPORTS_SH_CMT 488 select PINCTRL 489 490config CPU_SUBTYPE_SH7366 491 bool "Support SH7366 processor" 492 select CPU_SH4AL_DSP 493 select CPU_SHX2 494 select ARCH_SHMOBILE 495 select ARCH_SPARSEMEM_ENABLE 496 select SYS_SUPPORTS_NUMA 497 select SYS_SUPPORTS_SH_CMT 498 499endchoice 500 501source "arch/sh/mm/Kconfig" 502 503source "arch/sh/Kconfig.cpu" 504 505source "arch/sh/boards/Kconfig" 506 507menu "Timer and clock configuration" 508 509config SH_PCLK_FREQ 510 int "Peripheral clock frequency (in Hz)" 511 depends on SH_CLK_CPG_LEGACY 512 default "31250000" if CPU_SUBTYPE_SH7619 513 default "33333333" if CPU_SUBTYPE_SH7770 || \ 514 CPU_SUBTYPE_SH7760 || \ 515 CPU_SUBTYPE_SH7705 || \ 516 CPU_SUBTYPE_SH7203 || \ 517 CPU_SUBTYPE_SH7206 || \ 518 CPU_SUBTYPE_SH7263 || \ 519 CPU_SUBTYPE_MXG 520 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 521 default "66000000" if CPU_SUBTYPE_SH4_202 522 default "50000000" 523 help 524 This option is used to specify the peripheral clock frequency. 525 This is necessary for determining the reference clock value on 526 platforms lacking an RTC. 527 528config SH_CLK_CPG 529 def_bool y 530 531config SH_CLK_CPG_LEGACY 532 depends on SH_CLK_CPG 533 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 534 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 535 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 536 !CPU_SUBTYPE_SH7269 537 538endmenu 539 540menu "CPU Frequency scaling" 541source "drivers/cpufreq/Kconfig" 542endmenu 543 544source "arch/sh/drivers/Kconfig" 545 546endmenu 547 548menu "Kernel features" 549 550source "kernel/Kconfig.hz" 551 552config ARCH_SUPPORTS_KEXEC 553 def_bool MMU 554 555config ARCH_SUPPORTS_CRASH_DUMP 556 def_bool BROKEN_ON_SMP 557 558config ARCH_SUPPORTS_KEXEC_JUMP 559 def_bool y 560 561config PHYSICAL_START 562 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 563 default MEMORY_START 564 help 565 This gives the physical address where the kernel is loaded 566 and is ordinarily the same as MEMORY_START. 567 568 Different values are primarily used in the case of kexec on panic 569 where the fail safe kernel needs to run at a different address 570 than the panic-ed kernel. 571 572config SMP 573 bool "Symmetric multi-processing support" 574 depends on SYS_SUPPORTS_SMP 575 help 576 This enables support for systems with more than one CPU. If you have 577 a system with only one CPU, say N. If you have a system with more 578 than one CPU, say Y. 579 580 If you say N here, the kernel will run on uni- and multiprocessor 581 machines, but will use only one CPU of a multiprocessor machine. If 582 you say Y here, the kernel will run on many, but not all, 583 uniprocessor machines. On a uniprocessor machine, the kernel 584 will run faster if you say N here. 585 586 People using multiprocessor machines who say Y here should also say 587 Y to "Enhanced Real Time Clock Support", below. 588 589 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 590 available at <https://www.tldp.org/docs.html#howto>. 591 592 If you don't know what to do here, say N. 593 594config NR_CPUS 595 int "Maximum number of CPUs (2-32)" 596 range 2 32 597 depends on SMP 598 default "4" if CPU_SUBTYPE_SHX3 599 default "2" 600 help 601 This allows you to specify the maximum number of CPUs which this 602 kernel will support. The maximum supported value is 32 and the 603 minimum value which makes sense is 2. 604 605 This is purely to save memory - each supported CPU adds 606 approximately eight kilobytes to the kernel image. 607 608config HOTPLUG_CPU 609 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 610 depends on SMP 611 help 612 Say Y here to experiment with turning CPUs off and on. CPUs 613 can be controlled through /sys/devices/system/cpu. 614 615config GUSA 616 def_bool y 617 depends on !SMP 618 help 619 This enables support for gUSA (general UserSpace Atomicity). 620 This is the default implementation for both UP and non-ll/sc 621 CPUs, and is used by the libc, amongst others. 622 623 For additional information, design information can be found 624 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 625 626 This should only be disabled for special cases where alternate 627 atomicity implementations exist. 628 629config GUSA_RB 630 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 631 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 632 help 633 Enabling this option will allow the kernel to implement some 634 atomic operations using a software implementation of load-locked/ 635 store-conditional (LLSC). On machines which do not have hardware 636 LLSC, this should be more efficient than the other alternative of 637 disabling interrupts around the atomic sequence. 638 639config HW_PERF_EVENTS 640 bool "Enable hardware performance counter support for perf events" 641 depends on PERF_EVENTS && CPU_HAS_PMU 642 default y 643 help 644 Enable hardware performance counter support for perf events. If 645 disabled, perf events will use software events only. 646 647source "drivers/sh/Kconfig" 648 649endmenu 650 651menu "Boot options" 652 653config USE_BUILTIN_DTB 654 bool "Use builtin DTB" 655 default n 656 depends on SH_DEVICE_TREE 657 help 658 Link a device tree blob for particular hardware into the kernel, 659 suppressing use of the DTB pointer provided by the bootloader. 660 This option should only be used with legacy bootloaders that are 661 not capable of providing a DTB to the kernel, or for experimental 662 hardware without stable device tree bindings. 663 664config BUILTIN_DTB_SOURCE 665 string "Source file for builtin DTB" 666 default "" 667 depends on USE_BUILTIN_DTB 668 help 669 Base name (without suffix, relative to arch/sh/boot/dts) for the 670 a DTS file that will be used to produce the DTB linked into the 671 kernel. 672 673config ZERO_PAGE_OFFSET 674 hex 675 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 676 SH_7751_SOLUTION_ENGINE 677 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 678 default "0x00002000" if PAGE_SIZE_8KB 679 default "0x00001000" 680 help 681 This sets the default offset of zero page. 682 683config BOOT_LINK_OFFSET 684 hex 685 default "0x00210000" if SH_SHMIN 686 default "0x00810000" if SH_7780_SOLUTION_ENGINE 687 default "0x009e0000" if SH_TITAN 688 default "0x01800000" if SH_SDK7780 689 default "0x02000000" if SH_EDOSK7760 690 default "0x00800000" 691 help 692 This option allows you to set the link address offset of the zImage. 693 This can be useful if you are on a board which has a small amount of 694 memory. 695 696config ENTRY_OFFSET 697 hex 698 default "0x00001000" if PAGE_SIZE_4KB 699 default "0x00002000" if PAGE_SIZE_8KB 700 default "0x00004000" if PAGE_SIZE_16KB 701 default "0x00010000" if PAGE_SIZE_64KB 702 default "0x00000000" 703 704config ROMIMAGE_MMCIF 705 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 706 depends on CPU_SUBTYPE_SH7724 707 help 708 Say Y here to include experimental MMCIF loading code in 709 romImage. With this enabled it is possible to write the romImage 710 kernel image to an MMC card and boot the kernel straight from 711 the reset vector. At reset the processor Mask ROM will load the 712 first part of the romImage which in turn loads the rest the kernel 713 image to RAM using the MMCIF hardware block. 714 715choice 716 prompt "Kernel command line" 717 optional 718 default CMDLINE_OVERWRITE 719 help 720 Setting this option allows the kernel command line arguments 721 to be set. 722 723config CMDLINE_OVERWRITE 724 bool "Overwrite bootloader kernel arguments" 725 help 726 Given string will overwrite any arguments passed in by 727 a bootloader. 728 729config CMDLINE_EXTEND 730 bool "Extend bootloader kernel arguments" 731 help 732 Given string will be concatenated with arguments passed in 733 by a bootloader. 734 735endchoice 736 737config CMDLINE 738 string "Kernel command line arguments string" 739 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 740 default "console=ttySC1,115200" 741 742endmenu 743 744menu "Bus options" 745 746config SUPERHYWAY 747 tristate "SuperHyway Bus support" 748 depends on CPU_SUBTYPE_SH4_202 749 750config MAPLE 751 bool "Maple Bus support" 752 depends on SH_DREAMCAST 753 help 754 The Maple Bus is SEGA's serial communication bus for peripherals 755 on the Dreamcast. Without this bus support you won't be able to 756 get your Dreamcast keyboard etc to work, so most users 757 probably want to say 'Y' here, unless you are only using the 758 Dreamcast with a serial line terminal or a remote network 759 connection. 760 761endmenu 762 763menu "Power management options (EXPERIMENTAL)" 764 765source "kernel/power/Kconfig" 766 767source "drivers/cpuidle/Kconfig" 768 769endmenu 770