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