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_CURRENT_STACK_POINTER 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_LIB_ASHLDI3 24 select GENERIC_LIB_ASHRDI3 25 select GENERIC_LIB_LSHRDI3 26 select GENERIC_PCI_IOMAP if PCI 27 select GENERIC_SCHED_CLOCK 28 select GENERIC_SMP_IDLE_THREAD 29 select GUP_GET_PXX_LOW_HIGH if X2TLB 30 select HAS_IOPORT if HAS_IOPORT_MAP 31 select HAVE_ARCH_AUDITSYSCALL 32 select HAVE_ARCH_KGDB 33 select HAVE_ARCH_SECCOMP_FILTER 34 select HAVE_ARCH_TRACEHOOK 35 select HAVE_DEBUG_BUGVERBOSE 36 select HAVE_DEBUG_KMEMLEAK 37 select HAVE_DYNAMIC_FTRACE 38 select HAVE_FAST_GUP if MMU 39 select HAVE_FUNCTION_GRAPH_TRACER 40 select HAVE_FUNCTION_TRACER 41 select HAVE_FTRACE_MCOUNT_RECORD 42 select HAVE_HW_BREAKPOINT 43 select HAVE_IOREMAP_PROT if MMU && !X2TLB 44 select HAVE_KERNEL_BZIP2 45 select HAVE_KERNEL_GZIP 46 select HAVE_KERNEL_LZMA 47 select HAVE_KERNEL_LZO 48 select HAVE_KERNEL_XZ 49 select HAVE_KPROBES 50 select HAVE_KRETPROBES 51 select HAVE_MIXED_BREAKPOINTS_REGS 52 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER 53 select HAVE_NMI 54 select HAVE_PATA_PLATFORM 55 select HAVE_PERF_EVENTS 56 select HAVE_REGS_AND_STACK_ACCESS_API 57 select HAVE_UID16 58 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 59 select HAVE_STACKPROTECTOR 60 select HAVE_SYSCALL_TRACEPOINTS 61 select IRQ_FORCED_THREADING 62 select LOCK_MM_AND_FIND_VMA 63 select MODULES_USE_ELF_RELA 64 select NEED_SG_DMA_LENGTH 65 select NO_DMA if !MMU && !DMA_COHERENT 66 select NO_GENERIC_PCI_IOPORT_MAP if PCI 67 select OLD_SIGACTION 68 select OLD_SIGSUSPEND 69 select PCI_DOMAINS if PCI 70 select PERF_EVENTS 71 select PERF_USE_VMALLOC 72 select RTC_LIB 73 select SPARSE_IRQ 74 select TRACE_IRQFLAGS_SUPPORT 75 help 76 The SuperH is a RISC processor targeted for use in embedded systems 77 and consumer electronics; it was also used in the Sega Dreamcast 78 gaming console. The SuperH port has a home page at 79 <http://www.linux-sh.org/>. 80 81config GENERIC_BUG 82 def_bool y 83 depends on BUG 84 85config GENERIC_HWEIGHT 86 def_bool y 87 88config GENERIC_CALIBRATE_DELAY 89 bool 90 91config GENERIC_LOCKBREAK 92 def_bool y 93 depends on SMP && PREEMPTION 94 95config ARCH_SUSPEND_POSSIBLE 96 def_bool n 97 98config ARCH_HIBERNATION_POSSIBLE 99 def_bool n 100 101config SYS_SUPPORTS_APM_EMULATION 102 bool 103 select ARCH_SUSPEND_POSSIBLE 104 105config SYS_SUPPORTS_SMP 106 bool 107 108config SYS_SUPPORTS_NUMA 109 bool 110 111config STACKTRACE_SUPPORT 112 def_bool y 113 114config LOCKDEP_SUPPORT 115 def_bool y 116 117config ARCH_HAS_ILOG2_U32 118 def_bool n 119 120config ARCH_HAS_ILOG2_U64 121 def_bool n 122 123config NO_IOPORT_MAP 124 def_bool !PCI 125 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \ 126 !SH_SOLUTION_ENGINE 127 128config IO_TRAPPED 129 bool 130 131config SWAP_IO_SPACE 132 bool 133 134config DMA_COHERENT 135 bool 136 137config DMA_NONCOHERENT 138 def_bool !NO_DMA && !DMA_COHERENT 139 select ARCH_HAS_DMA_PREP_COHERENT 140 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 141 select DMA_DIRECT_REMAP 142 143config PGTABLE_LEVELS 144 default 3 if X2TLB 145 default 2 146 147menu "System type" 148 149# 150# Processor families 151# 152config CPU_SH2 153 bool 154 select SH_INTC 155 156config CPU_SH2A 157 bool 158 select CPU_SH2 159 select UNCACHED_MAPPING 160 161config CPU_J2 162 bool 163 select CPU_SH2 164 select OF 165 select OF_EARLY_FLATTREE 166 167config CPU_SH3 168 bool 169 select CPU_HAS_INTEVT 170 select CPU_HAS_SR_RB 171 select SH_INTC 172 select SYS_SUPPORTS_SH_TMU 173 174config CPU_SH4 175 bool 176 select ARCH_SUPPORTS_HUGETLBFS if MMU 177 select CPU_HAS_INTEVT 178 select CPU_HAS_SR_RB 179 select CPU_HAS_FPU if !CPU_SH4AL_DSP 180 select SH_INTC 181 select SYS_SUPPORTS_SH_TMU 182 183config CPU_SH4A 184 bool 185 select CPU_SH4 186 187config CPU_SH4AL_DSP 188 bool 189 select CPU_SH4A 190 select CPU_HAS_DSP 191 192config CPU_SHX2 193 bool 194 195config CPU_SHX3 196 bool 197 select DMA_COHERENT 198 select SYS_SUPPORTS_SMP 199 select SYS_SUPPORTS_NUMA 200 201config ARCH_SHMOBILE 202 bool 203 select ARCH_SUSPEND_POSSIBLE 204 select PM 205 206config CPU_HAS_PMU 207 depends on CPU_SH4 || CPU_SH4A 208 default y 209 bool 210 211choice 212 prompt "Processor sub-type selection" 213 214# 215# Processor subtypes 216# 217 218# SH-2 Processor Support 219 220config CPU_SUBTYPE_SH7619 221 bool "Support SH7619 processor" 222 select CPU_SH2 223 select SYS_SUPPORTS_SH_CMT 224 225config CPU_SUBTYPE_J2 226 bool "Support J2 processor" 227 select CPU_J2 228 select SYS_SUPPORTS_SMP 229 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 230 231# SH-2A Processor Support 232 233config CPU_SUBTYPE_SH7201 234 bool "Support SH7201 processor" 235 select CPU_SH2A 236 select CPU_HAS_FPU 237 select SYS_SUPPORTS_SH_MTU2 238 239config CPU_SUBTYPE_SH7203 240 bool "Support SH7203 processor" 241 select CPU_SH2A 242 select CPU_HAS_FPU 243 select SYS_SUPPORTS_SH_CMT 244 select SYS_SUPPORTS_SH_MTU2 245 select PINCTRL 246 247config CPU_SUBTYPE_SH7206 248 bool "Support SH7206 processor" 249 select CPU_SH2A 250 select SYS_SUPPORTS_SH_CMT 251 select SYS_SUPPORTS_SH_MTU2 252 253config CPU_SUBTYPE_SH7263 254 bool "Support SH7263 processor" 255 select CPU_SH2A 256 select CPU_HAS_FPU 257 select SYS_SUPPORTS_SH_CMT 258 select SYS_SUPPORTS_SH_MTU2 259 260config CPU_SUBTYPE_SH7264 261 bool "Support SH7264 processor" 262 select CPU_SH2A 263 select CPU_HAS_FPU 264 select SYS_SUPPORTS_SH_CMT 265 select SYS_SUPPORTS_SH_MTU2 266 select PINCTRL 267 268config CPU_SUBTYPE_SH7269 269 bool "Support SH7269 processor" 270 select CPU_SH2A 271 select CPU_HAS_FPU 272 select SYS_SUPPORTS_SH_CMT 273 select SYS_SUPPORTS_SH_MTU2 274 select PINCTRL 275 276config CPU_SUBTYPE_MXG 277 bool "Support MX-G processor" 278 select CPU_SH2A 279 select SYS_SUPPORTS_SH_MTU2 280 help 281 Select MX-G if running on an R8A03022BG part. 282 283# SH-3 Processor Support 284 285config CPU_SUBTYPE_SH7705 286 bool "Support SH7705 processor" 287 select CPU_SH3 288 289config CPU_SUBTYPE_SH7706 290 bool "Support SH7706 processor" 291 select CPU_SH3 292 help 293 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 294 295config CPU_SUBTYPE_SH7707 296 bool "Support SH7707 processor" 297 select CPU_SH3 298 help 299 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 300 301config CPU_SUBTYPE_SH7708 302 bool "Support SH7708 processor" 303 select CPU_SH3 304 help 305 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 306 if you have a 100 Mhz SH-3 HD6417708R CPU. 307 308config CPU_SUBTYPE_SH7709 309 bool "Support SH7709 processor" 310 select CPU_SH3 311 help 312 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 313 314config CPU_SUBTYPE_SH7710 315 bool "Support SH7710 processor" 316 select CPU_SH3 317 select CPU_HAS_DSP 318 help 319 Select SH7710 if you have a SH3-DSP SH7710 CPU. 320 321config CPU_SUBTYPE_SH7712 322 bool "Support SH7712 processor" 323 select CPU_SH3 324 select CPU_HAS_DSP 325 help 326 Select SH7712 if you have a SH3-DSP SH7712 CPU. 327 328config CPU_SUBTYPE_SH7720 329 bool "Support SH7720 processor" 330 select CPU_SH3 331 select CPU_HAS_DSP 332 select SYS_SUPPORTS_SH_CMT 333 select USB_OHCI_SH if USB_OHCI_HCD 334 select PINCTRL 335 help 336 Select SH7720 if you have a SH3-DSP SH7720 CPU. 337 338config CPU_SUBTYPE_SH7721 339 bool "Support SH7721 processor" 340 select CPU_SH3 341 select CPU_HAS_DSP 342 select SYS_SUPPORTS_SH_CMT 343 select USB_OHCI_SH if USB_OHCI_HCD 344 help 345 Select SH7721 if you have a SH3-DSP SH7721 CPU. 346 347# SH-4 Processor Support 348 349config CPU_SUBTYPE_SH7750 350 bool "Support SH7750 processor" 351 select CPU_SH4 352 help 353 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 354 355config CPU_SUBTYPE_SH7091 356 bool "Support SH7091 processor" 357 select CPU_SH4 358 help 359 Select SH7091 if you have an SH-4 based Sega device (such as 360 the Dreamcast, Naomi, and Naomi 2). 361 362config CPU_SUBTYPE_SH7750R 363 bool "Support SH7750R processor" 364 select CPU_SH4 365 366config CPU_SUBTYPE_SH7750S 367 bool "Support SH7750S processor" 368 select CPU_SH4 369 370config CPU_SUBTYPE_SH7751 371 bool "Support SH7751 processor" 372 select CPU_SH4 373 help 374 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 375 or if you have a HD6417751R CPU. 376 377config CPU_SUBTYPE_SH7751R 378 bool "Support SH7751R processor" 379 select CPU_SH4 380 381config CPU_SUBTYPE_SH7760 382 bool "Support SH7760 processor" 383 select CPU_SH4 384 385config CPU_SUBTYPE_SH4_202 386 bool "Support SH4-202 processor" 387 select CPU_SH4 388 389# SH-4A Processor Support 390 391config CPU_SUBTYPE_SH7723 392 bool "Support SH7723 processor" 393 select CPU_SH4A 394 select CPU_SHX2 395 select ARCH_SHMOBILE 396 select ARCH_SPARSEMEM_ENABLE 397 select SYS_SUPPORTS_SH_CMT 398 select PINCTRL 399 help 400 Select SH7723 if you have an SH-MobileR2 CPU. 401 402config CPU_SUBTYPE_SH7724 403 bool "Support SH7724 processor" 404 select CPU_SH4A 405 select CPU_SHX2 406 select ARCH_SHMOBILE 407 select ARCH_SPARSEMEM_ENABLE 408 select SYS_SUPPORTS_SH_CMT 409 select PINCTRL 410 help 411 Select SH7724 if you have an SH-MobileR2R CPU. 412 413config CPU_SUBTYPE_SH7734 414 bool "Support SH7734 processor" 415 select CPU_SH4A 416 select CPU_SHX2 417 select PINCTRL 418 help 419 Select SH7734 if you have a SH4A SH7734 CPU. 420 421config CPU_SUBTYPE_SH7757 422 bool "Support SH7757 processor" 423 select CPU_SH4A 424 select CPU_SHX2 425 select PINCTRL 426 help 427 Select SH7757 if you have a SH4A SH7757 CPU. 428 429config CPU_SUBTYPE_SH7763 430 bool "Support SH7763 processor" 431 select CPU_SH4A 432 select USB_OHCI_SH if USB_OHCI_HCD 433 help 434 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 435 436config CPU_SUBTYPE_SH7770 437 bool "Support SH7770 processor" 438 select CPU_SH4A 439 440config CPU_SUBTYPE_SH7780 441 bool "Support SH7780 processor" 442 select CPU_SH4A 443 444config CPU_SUBTYPE_SH7785 445 bool "Support SH7785 processor" 446 select CPU_SH4A 447 select CPU_SHX2 448 select ARCH_SPARSEMEM_ENABLE 449 select SYS_SUPPORTS_NUMA 450 select PINCTRL 451 452config CPU_SUBTYPE_SH7786 453 bool "Support SH7786 processor" 454 select CPU_SH4A 455 select CPU_SHX3 456 select CPU_HAS_PTEAEX 457 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 458 select USB_OHCI_SH if USB_OHCI_HCD 459 select USB_EHCI_SH if USB_EHCI_HCD 460 select PINCTRL 461 462config CPU_SUBTYPE_SHX3 463 bool "Support SH-X3 processor" 464 select CPU_SH4A 465 select CPU_SHX3 466 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 467 select GPIOLIB 468 select PINCTRL 469 470# SH4AL-DSP Processor Support 471 472config CPU_SUBTYPE_SH7343 473 bool "Support SH7343 processor" 474 select CPU_SH4AL_DSP 475 select ARCH_SHMOBILE 476 select SYS_SUPPORTS_SH_CMT 477 478config CPU_SUBTYPE_SH7722 479 bool "Support SH7722 processor" 480 select CPU_SH4AL_DSP 481 select CPU_SHX2 482 select ARCH_SHMOBILE 483 select ARCH_SPARSEMEM_ENABLE 484 select SYS_SUPPORTS_NUMA 485 select SYS_SUPPORTS_SH_CMT 486 select PINCTRL 487 488config CPU_SUBTYPE_SH7366 489 bool "Support SH7366 processor" 490 select CPU_SH4AL_DSP 491 select CPU_SHX2 492 select ARCH_SHMOBILE 493 select ARCH_SPARSEMEM_ENABLE 494 select SYS_SUPPORTS_NUMA 495 select SYS_SUPPORTS_SH_CMT 496 497endchoice 498 499source "arch/sh/mm/Kconfig" 500 501source "arch/sh/Kconfig.cpu" 502 503source "arch/sh/boards/Kconfig" 504 505menu "Timer and clock configuration" 506 507config SH_PCLK_FREQ 508 int "Peripheral clock frequency (in Hz)" 509 depends on SH_CLK_CPG_LEGACY 510 default "31250000" if CPU_SUBTYPE_SH7619 511 default "33333333" if CPU_SUBTYPE_SH7770 || \ 512 CPU_SUBTYPE_SH7760 || \ 513 CPU_SUBTYPE_SH7705 || \ 514 CPU_SUBTYPE_SH7203 || \ 515 CPU_SUBTYPE_SH7206 || \ 516 CPU_SUBTYPE_SH7263 || \ 517 CPU_SUBTYPE_MXG 518 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 519 default "66000000" if CPU_SUBTYPE_SH4_202 520 default "50000000" 521 help 522 This option is used to specify the peripheral clock frequency. 523 This is necessary for determining the reference clock value on 524 platforms lacking an RTC. 525 526config SH_CLK_CPG 527 def_bool y 528 529config SH_CLK_CPG_LEGACY 530 depends on SH_CLK_CPG 531 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 532 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \ 533 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \ 534 !CPU_SUBTYPE_SH7269 535 536endmenu 537 538menu "CPU Frequency scaling" 539source "drivers/cpufreq/Kconfig" 540endmenu 541 542source "arch/sh/drivers/Kconfig" 543 544endmenu 545 546menu "Kernel features" 547 548source "kernel/Kconfig.hz" 549 550config KEXEC 551 bool "kexec system call (EXPERIMENTAL)" 552 depends on MMU 553 select KEXEC_CORE 554 help 555 kexec is a system call that implements the ability to shutdown your 556 current kernel, and to start another kernel. It is like a reboot 557 but it is independent of the system firmware. And like a reboot 558 you can start any kernel with it, not just Linux. 559 560 The name comes from the similarity to the exec system call. 561 562 It is an ongoing process to be certain the hardware in a machine 563 is properly shutdown, so do not be surprised if this code does not 564 initially work for you. As of this writing the exact hardware 565 interface is strongly in flux, so no good recommendation can be 566 made. 567 568config CRASH_DUMP 569 bool "kernel crash dumps (EXPERIMENTAL)" 570 depends on BROKEN_ON_SMP 571 help 572 Generate crash dump after being started by kexec. 573 This should be normally only set in special crash dump kernels 574 which are loaded in the main kernel with kexec-tools into 575 a specially reserved region and then later executed after 576 a crash by kdump/kexec. The crash dump kernel must be compiled 577 to a memory address not used by the main kernel using 578 PHYSICAL_START. 579 580 For more details see Documentation/admin-guide/kdump/kdump.rst 581 582config KEXEC_JUMP 583 bool "kexec jump (EXPERIMENTAL)" 584 depends on KEXEC && HIBERNATION 585 help 586 Jump between original kernel and kexeced kernel and invoke 587 code via KEXEC 588 589config PHYSICAL_START 590 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) 591 default MEMORY_START 592 help 593 This gives the physical address where the kernel is loaded 594 and is ordinarily the same as MEMORY_START. 595 596 Different values are primarily used in the case of kexec on panic 597 where the fail safe kernel needs to run at a different address 598 than the panic-ed kernel. 599 600config SMP 601 bool "Symmetric multi-processing support" 602 depends on SYS_SUPPORTS_SMP 603 help 604 This enables support for systems with more than one CPU. If you have 605 a system with only one CPU, say N. If you have a system with more 606 than one CPU, say Y. 607 608 If you say N here, the kernel will run on uni- and multiprocessor 609 machines, but will use only one CPU of a multiprocessor machine. If 610 you say Y here, the kernel will run on many, but not all, 611 uniprocessor machines. On a uniprocessor machine, the kernel 612 will run faster if you say N here. 613 614 People using multiprocessor machines who say Y here should also say 615 Y to "Enhanced Real Time Clock Support", below. 616 617 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 618 available at <https://www.tldp.org/docs.html#howto>. 619 620 If you don't know what to do here, say N. 621 622config NR_CPUS 623 int "Maximum number of CPUs (2-32)" 624 range 2 32 625 depends on SMP 626 default "4" if CPU_SUBTYPE_SHX3 627 default "2" 628 help 629 This allows you to specify the maximum number of CPUs which this 630 kernel will support. The maximum supported value is 32 and the 631 minimum value which makes sense is 2. 632 633 This is purely to save memory - each supported CPU adds 634 approximately eight kilobytes to the kernel image. 635 636config HOTPLUG_CPU 637 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 638 depends on SMP 639 help 640 Say Y here to experiment with turning CPUs off and on. CPUs 641 can be controlled through /sys/devices/system/cpu. 642 643config GUSA 644 def_bool y 645 depends on !SMP 646 help 647 This enables support for gUSA (general UserSpace Atomicity). 648 This is the default implementation for both UP and non-ll/sc 649 CPUs, and is used by the libc, amongst others. 650 651 For additional information, design information can be found 652 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 653 654 This should only be disabled for special cases where alternate 655 atomicity implementations exist. 656 657config GUSA_RB 658 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 659 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 660 help 661 Enabling this option will allow the kernel to implement some 662 atomic operations using a software implementation of load-locked/ 663 store-conditional (LLSC). On machines which do not have hardware 664 LLSC, this should be more efficient than the other alternative of 665 disabling interrupts around the atomic sequence. 666 667config HW_PERF_EVENTS 668 bool "Enable hardware performance counter support for perf events" 669 depends on PERF_EVENTS && CPU_HAS_PMU 670 default y 671 help 672 Enable hardware performance counter support for perf events. If 673 disabled, perf events will use software events only. 674 675source "drivers/sh/Kconfig" 676 677endmenu 678 679menu "Boot options" 680 681config USE_BUILTIN_DTB 682 bool "Use builtin DTB" 683 default n 684 depends on SH_DEVICE_TREE 685 help 686 Link a device tree blob for particular hardware into the kernel, 687 suppressing use of the DTB pointer provided by the bootloader. 688 This option should only be used with legacy bootloaders that are 689 not capable of providing a DTB to the kernel, or for experimental 690 hardware without stable device tree bindings. 691 692config BUILTIN_DTB_SOURCE 693 string "Source file for builtin DTB" 694 default "" 695 depends on USE_BUILTIN_DTB 696 help 697 Base name (without suffix, relative to arch/sh/boot/dts) for the 698 a DTS file that will be used to produce the DTB linked into the 699 kernel. 700 701config ZERO_PAGE_OFFSET 702 hex 703 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 704 SH_7751_SOLUTION_ENGINE 705 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 706 default "0x00002000" if PAGE_SIZE_8KB 707 default "0x00001000" 708 help 709 This sets the default offset of zero page. 710 711config BOOT_LINK_OFFSET 712 hex 713 default "0x00210000" if SH_SHMIN 714 default "0x00810000" if SH_7780_SOLUTION_ENGINE 715 default "0x009e0000" if SH_TITAN 716 default "0x01800000" if SH_SDK7780 717 default "0x02000000" if SH_EDOSK7760 718 default "0x00800000" 719 help 720 This option allows you to set the link address offset of the zImage. 721 This can be useful if you are on a board which has a small amount of 722 memory. 723 724config ENTRY_OFFSET 725 hex 726 default "0x00001000" if PAGE_SIZE_4KB 727 default "0x00002000" if PAGE_SIZE_8KB 728 default "0x00004000" if PAGE_SIZE_16KB 729 default "0x00010000" if PAGE_SIZE_64KB 730 default "0x00000000" 731 732config ROMIMAGE_MMCIF 733 bool "Include MMCIF loader in romImage (EXPERIMENTAL)" 734 depends on CPU_SUBTYPE_SH7724 735 help 736 Say Y here to include experimental MMCIF loading code in 737 romImage. With this enabled it is possible to write the romImage 738 kernel image to an MMC card and boot the kernel straight from 739 the reset vector. At reset the processor Mask ROM will load the 740 first part of the romImage which in turn loads the rest the kernel 741 image to RAM using the MMCIF hardware block. 742 743choice 744 prompt "Kernel command line" 745 optional 746 default CMDLINE_OVERWRITE 747 help 748 Setting this option allows the kernel command line arguments 749 to be set. 750 751config CMDLINE_OVERWRITE 752 bool "Overwrite bootloader kernel arguments" 753 help 754 Given string will overwrite any arguments passed in by 755 a bootloader. 756 757config CMDLINE_EXTEND 758 bool "Extend bootloader kernel arguments" 759 help 760 Given string will be concatenated with arguments passed in 761 by a bootloader. 762 763endchoice 764 765config CMDLINE 766 string "Kernel command line arguments string" 767 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 768 default "console=ttySC1,115200" 769 770endmenu 771 772menu "Bus options" 773 774config SUPERHYWAY 775 tristate "SuperHyway Bus support" 776 depends on CPU_SUBTYPE_SH4_202 777 778config MAPLE 779 bool "Maple Bus support" 780 depends on SH_DREAMCAST 781 help 782 The Maple Bus is SEGA's serial communication bus for peripherals 783 on the Dreamcast. Without this bus support you won't be able to 784 get your Dreamcast keyboard etc to work, so most users 785 probably want to say 'Y' here, unless you are only using the 786 Dreamcast with a serial line terminal or a remote network 787 connection. 788 789endmenu 790 791menu "Power management options (EXPERIMENTAL)" 792 793source "kernel/power/Kconfig" 794 795source "drivers/cpuidle/Kconfig" 796 797endmenu 798