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