1 # SPDX-License-Identifier: GPL-2.0 !! 1 # SPDX-License-Identifier: GPL-2.0-only
2 # Hexagon configuration !! 2 config 64BIT
3 comment "Linux Kernel Configuration for Hexago !! 3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
>> 4 default "$(ARCH)" = "sparc64"
>> 5 help
>> 6 SPARC is a family of RISC microprocessors designed and marketed by
>> 7 Sun Microsystems, incorporated. They are very widely found in Sun
>> 8 workstations and clones.
>> 9
>> 10 Say yes to build a 64-bit kernel - formerly known as sparc64
>> 11 Say no to build a 32-bit kernel - formerly known as sparc
>> 12
>> 13 config SPARC
>> 14 bool
>> 15 default y
>> 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
>> 17 select ARCH_MIGHT_HAVE_PC_SERIO
>> 18 select DMA_OPS
>> 19 select OF
>> 20 select OF_PROMTREE
>> 21 select HAVE_ASM_MODVERSIONS
>> 22 select HAVE_IDE
>> 23 select HAVE_ARCH_KGDB if !SMP || SPARC64
>> 24 select HAVE_ARCH_TRACEHOOK
>> 25 select HAVE_ARCH_SECCOMP if SPARC64
>> 26 select HAVE_EXIT_THREAD
>> 27 select HAVE_PCI
>> 28 select SYSCTL_EXCEPTION_TRACE
>> 29 select RTC_CLASS
>> 30 select RTC_DRV_M48T59
>> 31 select RTC_SYSTOHC
>> 32 select HAVE_ARCH_JUMP_LABEL if SPARC64
>> 33 select GENERIC_IRQ_SHOW
>> 34 select ARCH_WANT_IPC_PARSE_VERSION
>> 35 select GENERIC_PCI_IOMAP
>> 36 select HAVE_NMI_WATCHDOG if SPARC64
>> 37 select HAVE_CBPF_JIT if SPARC32
>> 38 select HAVE_EBPF_JIT if SPARC64
>> 39 select HAVE_DEBUG_BUGVERBOSE
>> 40 select GENERIC_SMP_IDLE_THREAD
>> 41 select GENERIC_STRNCPY_FROM_USER
>> 42 select GENERIC_STRNLEN_USER
>> 43 select MODULES_USE_ELF_RELA
>> 44 select PCI_SYSCALL if PCI
>> 45 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
>> 46 select ODD_RT_SIGACTION
>> 47 select OLD_SIGSUSPEND
>> 48 select CPU_NO_EFFICIENT_FFS
>> 49 select LOCKDEP_SMALL if LOCKDEP
>> 50 select NEED_DMA_MAP_STATE
>> 51 select NEED_SG_DMA_LENGTH
>> 52 select SET_FS
4 53
5 config HEXAGON !! 54 config SPARC32
6 def_bool y !! 55 def_bool !64BIT
7 select ARCH_32BIT_OFF_T 56 select ARCH_32BIT_OFF_T
8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 57 select ARCH_HAS_SYNC_DMA_FOR_CPU
9 select ARCH_NO_PREEMPT <<
10 select ARCH_WANT_FRAME_POINTERS <<
11 select DMA_GLOBAL_POOL <<
12 select HAVE_PAGE_SIZE_4KB <<
13 select HAVE_PAGE_SIZE_16KB <<
14 select HAVE_PAGE_SIZE_64KB <<
15 select HAVE_PAGE_SIZE_256KB <<
16 select FRAME_POINTER <<
17 # Other pending projects/to-do items. <<
18 # select HAVE_REGS_AND_STACK_ACCESS_AP <<
19 # select HAVE_HW_BREAKPOINT if PERF_EV <<
20 # select ARCH_HAS_CPU_IDLE_WAIT <<
21 # select GPIOLIB <<
22 # select HAVE_CLK <<
23 # select GENERIC_PENDING_IRQ if SMP <<
24 select GENERIC_ATOMIC64 58 select GENERIC_ATOMIC64
>> 59 select CLZ_TAB
>> 60 select HAVE_UID16
>> 61 select OLD_SIGACTION
>> 62
>> 63 config SPARC64
>> 64 def_bool 64BIT
>> 65 select HAVE_FUNCTION_TRACER
>> 66 select HAVE_FUNCTION_GRAPH_TRACER
>> 67 select HAVE_KRETPROBES
>> 68 select HAVE_KPROBES
>> 69 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 70 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 71 select HAVE_DYNAMIC_FTRACE
>> 72 select HAVE_FTRACE_MCOUNT_RECORD
>> 73 select HAVE_SYSCALL_TRACEPOINTS
>> 74 select HAVE_CONTEXT_TRACKING
>> 75 select HAVE_TIF_NOHZ
>> 76 select HAVE_DEBUG_KMEMLEAK
>> 77 select IOMMU_HELPER
>> 78 select SPARSE_IRQ
>> 79 select RTC_DRV_CMOS
>> 80 select RTC_DRV_BQ4802
>> 81 select RTC_DRV_SUN4V
>> 82 select RTC_DRV_STARFIRE
25 select HAVE_PERF_EVENTS 83 select HAVE_PERF_EVENTS
26 # GENERIC_ALLOCATOR is used by dma_all !! 84 select PERF_USE_VMALLOC
27 select GENERIC_ALLOCATOR !! 85 select ARCH_HAVE_NMI_SAFE_CMPXCHG
28 select GENERIC_IRQ_PROBE !! 86 select HAVE_C_RECORDMCOUNT
29 select GENERIC_IRQ_SHOW !! 87 select HAVE_ARCH_AUDITSYSCALL
30 select HAVE_ARCH_KGDB !! 88 select ARCH_SUPPORTS_ATOMIC_RMW
31 select HAVE_ARCH_TRACEHOOK !! 89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
32 select NEED_SG_DMA_LENGTH !! 90 select HAVE_NMI
33 select NO_IOPORT_MAP !! 91 select HAVE_REGS_AND_STACK_ACCESS_API
34 select GENERIC_IOMAP !! 92 select ARCH_USE_QUEUED_RWLOCKS
35 select GENERIC_IOREMAP !! 93 select ARCH_USE_QUEUED_SPINLOCKS
36 select GENERIC_SMP_IDLE_THREAD !! 94 select GENERIC_TIME_VSYSCALL
37 select STACKTRACE_SUPPORT !! 95 select ARCH_CLOCKSOURCE_DATA
38 select GENERIC_CLOCKEVENTS_BROADCAST !! 96 select ARCH_HAS_PTE_SPECIAL
39 select LOCK_MM_AND_FIND_VMA !! 97 select PCI_DOMAINS if PCI
40 select MODULES_USE_ELF_RELA !! 98 select ARCH_HAS_GIGANTIC_PAGE
41 select GENERIC_CPU_DEVICES !! 99 select HAVE_SOFTIRQ_ON_OWN_STACK
42 select ARCH_WANT_LD_ORPHAN_WARN <<
43 select TRACE_IRQFLAGS_SUPPORT <<
44 help <<
45 Qualcomm Hexagon is a processor arch <<
46 performance and low power across a w <<
47 100
48 config HEXAGON_PHYS_OFFSET !! 101 config ARCH_PROC_KCORE_TEXT
49 def_bool y 102 def_bool y
50 help <<
51 Platforms that don't load the kernel <<
52 103
53 config LOCKDEP_SUPPORT !! 104 config CPU_BIG_ENDIAN
54 def_bool y 105 def_bool y
55 106
56 config EARLY_PRINTK !! 107 config ARCH_ATU
57 def_bool y !! 108 bool
>> 109 default y if SPARC64
>> 110
>> 111 config STACKTRACE_SUPPORT
>> 112 bool
>> 113 default y if SPARC64
>> 114
>> 115 config LOCKDEP_SUPPORT
>> 116 bool
>> 117 default y if SPARC64
>> 118
>> 119 config ARCH_HIBERNATION_POSSIBLE
>> 120 def_bool y if SPARC64
>> 121
>> 122 config AUDIT_ARCH
>> 123 bool
>> 124 default y
>> 125
>> 126 config HAVE_SETUP_PER_CPU_AREA
>> 127 def_bool y if SPARC64
>> 128
>> 129 config NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 130 def_bool y if SPARC64
>> 131
>> 132 config NEED_PER_CPU_PAGE_FIRST_CHUNK
>> 133 def_bool y if SPARC64
58 134
59 config MMU 135 config MMU
60 def_bool y !! 136 bool
>> 137 default y
61 138
62 config GENERIC_CSUM !! 139 config HIGHMEM
63 def_bool y !! 140 bool
>> 141 default y if SPARC32
>> 142 select KMAP_LOCAL
>> 143
>> 144 config ZONE_DMA
>> 145 bool
>> 146 default y if SPARC32
>> 147
>> 148 config GENERIC_ISA_DMA
>> 149 bool
>> 150 default y if SPARC32
>> 151
>> 152 config PGTABLE_LEVELS
>> 153 default 4 if 64BIT
>> 154 default 3
64 155
65 config GENERIC_HWEIGHT !! 156 config ARCH_SUPPORTS_UPROBES
66 def_bool y !! 157 def_bool y if SPARC64
67 158
68 config STACKTRACE_SUPPORT !! 159 menu "Processor type and features"
69 def_bool y <<
70 select STACKTRACE <<
71 160
72 config GENERIC_BUG !! 161 config SMP
73 def_bool y !! 162 bool "Symmetric multi-processing support"
74 depends on BUG !! 163 help
>> 164 This enables support for systems with more than one CPU. If you have
>> 165 a system with only one CPU, say N. If you have a system with more
>> 166 than one CPU, say Y.
>> 167
>> 168 If you say N here, the kernel will run on uni- and multiprocessor
>> 169 machines, but will use only one CPU of a multiprocessor machine. If
>> 170 you say Y here, the kernel will run on many, but not all,
>> 171 uniprocessor machines. On a uniprocessor machine, the kernel
>> 172 will run faster if you say N here.
>> 173
>> 174 People using multiprocessor machines who say Y here should also say
>> 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 176 Management" code will be disabled if you say Y here.
75 177
76 menu "Machine selection" !! 178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 179 available at <https://www.tldp.org/docs.html#howto>.
77 180
78 choice !! 181 If you don't know what to do here, say N.
79 prompt "System type" <<
80 default HEXAGON_COMET <<
81 182
82 config HEXAGON_COMET !! 183 config NR_CPUS
83 bool "Comet Board" !! 184 int "Maximum number of CPUs"
>> 185 depends on SMP
>> 186 range 2 32 if SPARC32
>> 187 range 2 4096 if SPARC64
>> 188 default 32 if SPARC32
>> 189 default 4096 if SPARC64
>> 190
>> 191 source "kernel/Kconfig.hz"
>> 192
>> 193 config GENERIC_HWEIGHT
>> 194 bool
>> 195 default y
>> 196
>> 197 config GENERIC_CALIBRATE_DELAY
>> 198 bool
>> 199 default y
>> 200
>> 201 config ARCH_MAY_HAVE_PC_FDC
>> 202 bool
>> 203 default y
>> 204
>> 205 config EMULATED_CMPXCHG
>> 206 bool
>> 207 default y if SPARC32
84 help 208 help
85 Support for the Comet platform. !! 209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
>> 210 is emulated, and therefore it is not completely atomic.
86 211
87 endchoice !! 212 # Makefile helpers
>> 213 config SPARC32_SMP
>> 214 bool
>> 215 default y
>> 216 depends on SPARC32 && SMP
>> 217
>> 218 config SPARC64_SMP
>> 219 bool
>> 220 default y
>> 221 depends on SPARC64 && SMP
>> 222
>> 223 config EARLYFB
>> 224 bool "Support for early boot text console"
>> 225 default y
>> 226 depends on SPARC64
>> 227 help
>> 228 Say Y here to enable a faster early framebuffer boot console.
88 229
89 config HEXAGON_ARCH_VERSION !! 230 config HOTPLUG_CPU
90 int "Architecture version" !! 231 bool "Support for hot-pluggable CPUs"
91 default 2 !! 232 depends on SPARC64 && SMP
>> 233 help
>> 234 Say Y here to experiment with turning CPUs off and on. CPUs
>> 235 can be controlled through /sys/devices/system/cpu/cpu#.
>> 236 Say N if you want to disable CPU hotplug.
>> 237
>> 238 if SPARC64
>> 239 source "drivers/cpufreq/Kconfig"
>> 240 endif
>> 241
>> 242 config US3_MC
>> 243 tristate "UltraSPARC-III Memory Controller driver"
>> 244 depends on SPARC64
>> 245 default y
>> 246 help
>> 247 This adds a driver for the UltraSPARC-III memory controller.
>> 248 Loading this driver allows exact mnemonic strings to be
>> 249 printed in the event of a memory error, so that the faulty DIMM
>> 250 on the motherboard can be matched to the error.
>> 251
>> 252 If in doubt, say Y, as this information can be very useful.
>> 253
>> 254 # Global things across all Sun machines.
>> 255 config GENERIC_LOCKBREAK
>> 256 bool
>> 257 default y
>> 258 depends on SPARC64 && SMP && PREEMPTION
>> 259
>> 260 config NUMA
>> 261 bool "NUMA support"
>> 262 depends on SPARC64 && SMP
>> 263
>> 264 config NODES_SHIFT
>> 265 int "Maximum NUMA Nodes (as a power of 2)"
>> 266 range 4 5 if SPARC64
>> 267 default "5"
>> 268 depends on NEED_MULTIPLE_NODES
>> 269 help
>> 270 Specify the maximum number of NUMA Nodes available on the target
>> 271 system. Increases memory reserved to accommodate various tables.
>> 272
>> 273 config ARCH_SPARSEMEM_ENABLE
>> 274 def_bool y if SPARC64
>> 275 select SPARSEMEM_VMEMMAP_ENABLE
>> 276
>> 277 config ARCH_SPARSEMEM_DEFAULT
>> 278 def_bool y if SPARC64
>> 279
>> 280 config FORCE_MAX_ZONEORDER
>> 281 int "Maximum zone order"
>> 282 default "13"
>> 283 help
>> 284 The kernel memory allocator divides physically contiguous memory
>> 285 blocks into "zones", where each zone is a power of two number of
>> 286 pages. This option selects the largest power of two that the kernel
>> 287 keeps in the memory allocator. If you need to allocate very large
>> 288 blocks of physically contiguous memory, then you may need to
>> 289 increase this value.
>> 290
>> 291 This config option is actually maximum order plus one. For example,
>> 292 a value of 13 means that the largest free memory block is 2^12 pages.
>> 293
>> 294 if SPARC64
>> 295 source "kernel/power/Kconfig"
>> 296 endif
>> 297
>> 298 config SCHED_SMT
>> 299 bool "SMT (Hyperthreading) scheduler support"
>> 300 depends on SPARC64 && SMP
>> 301 default y
>> 302 help
>> 303 SMT scheduler support improves the CPU scheduler's decision making
>> 304 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 305 in some places. If unsure say N here.
>> 306
>> 307 config SCHED_MC
>> 308 bool "Multi-core scheduler support"
>> 309 depends on SPARC64 && SMP
>> 310 default y
>> 311 help
>> 312 Multi-core scheduler support improves the CPU scheduler's decision
>> 313 making when dealing with multi-core CPU chips at a cost of slightly
>> 314 increased overhead in some places. If unsure say N here.
>> 315
>> 316 config CMDLINE_BOOL
>> 317 bool "Default bootloader kernel arguments"
>> 318 depends on SPARC64
92 319
93 config CMDLINE 320 config CMDLINE
94 string "Default kernel command string" !! 321 string "Initial kernel command string"
95 default "" !! 322 depends on CMDLINE_BOOL
>> 323 default "console=ttyS0,9600 root=/dev/sda1"
>> 324 help
>> 325 Say Y here if you want to be able to pass default arguments to
>> 326 the kernel. This will be overridden by the bootloader, if you
>> 327 use one (such as SILO). This is most useful if you want to boot
>> 328 a kernel from TFTP, and want default options to be available
>> 329 with having them passed on the command line.
>> 330
>> 331 NOTE: This option WILL override the PROM bootargs setting!
>> 332
>> 333 config SUN_PM
>> 334 bool
>> 335 default y if SPARC32
96 help 336 help
97 On some platforms, there is currentl !! 337 Enable power management and CPU standby features on supported
98 to pass arguments to the kernel. For !! 338 SPARC platforms.
99 command-line options at build time b <<
100 minimum, you should specify the memo <<
101 (e.g., mem=64M root=/dev/nfs). <<
102 339
103 config SMP !! 340 config SPARC_LED
104 bool "Multi-Processing support" !! 341 tristate "Sun4m LED driver"
>> 342 depends on SPARC32
>> 343 help
>> 344 This driver toggles the front-panel LED on sun4m systems
>> 345 in a user-specifiable manner. Its state can be probed
>> 346 by reading /proc/led and its blinking mode can be changed
>> 347 via writes to /proc/led
>> 348
>> 349 config SERIAL_CONSOLE
>> 350 bool
>> 351 depends on SPARC32
>> 352 default y
105 help 353 help
106 Enables SMP support in the kernel. !! 354 If you say Y here, it will be possible to use a serial port as the
>> 355 system console (the system console is the device which receives all
>> 356 kernel messages and warnings and which allows logins in single user
>> 357 mode). This could be useful if some terminal or printer is connected
>> 358 to that serial port.
>> 359
>> 360 Even if you say Y here, the currently visible virtual console
>> 361 (/dev/tty0) will still be used as the system console by default, but
>> 362 you can alter that using a kernel command line option such as
>> 363 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 364 your boot loader (silo) about how to pass options to the kernel at
>> 365 boot time.)
>> 366
>> 367 If you don't have a graphics card installed and you say Y here, the
>> 368 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 369 system console.
>> 370
>> 371 If unsure, say N.
>> 372
>> 373 config SPARC_LEON
>> 374 bool "Sparc Leon processor family"
>> 375 depends on SPARC32
>> 376 select USB_EHCI_BIG_ENDIAN_MMIO
>> 377 select USB_EHCI_BIG_ENDIAN_DESC
>> 378 select USB_UHCI_BIG_ENDIAN_MMIO
>> 379 select USB_UHCI_BIG_ENDIAN_DESC
>> 380 help
>> 381 If you say Y here if you are running on a SPARC-LEON processor.
>> 382 The LEON processor is a synthesizable VHDL model of the
>> 383 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 384 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 385 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 386 toolchain at www.gaisler.com.
>> 387
>> 388 if SPARC_LEON
>> 389 menu "U-Boot options"
>> 390
>> 391 config UBOOT_LOAD_ADDR
>> 392 hex "uImage Load Address"
>> 393 default 0x40004000
>> 394 help
>> 395 U-Boot kernel load address, the address in physical address space
>> 396 where u-boot will place the Linux kernel before booting it.
>> 397 This address is normally the base address of main memory + 0x4000.
>> 398
>> 399 config UBOOT_FLASH_ADDR
>> 400 hex "uImage.o Load Address"
>> 401 default 0x00080000
>> 402 help
>> 403 Optional setting only affecting the uImage.o ELF-image used to
>> 404 download the uImage file to the target using a ELF-loader other than
>> 405 U-Boot. It may for example be used to download an uImage to FLASH with
>> 406 the GRMON utility before even starting u-boot.
>> 407
>> 408 config UBOOT_ENTRY_ADDR
>> 409 hex "uImage Entry Address"
>> 410 default 0xf0004000
>> 411 help
>> 412 Do not change this unless you know what you're doing. This is
>> 413 hardcoded by the SPARC32 and LEON port.
107 414
108 config NR_CPUS !! 415 This is the virtual address u-boot jumps to when booting the Linux
109 int "Maximum number of CPUs" if SMP !! 416 Kernel.
110 range 2 6 if SMP <<
111 default "1" if !SMP <<
112 default "6" if SMP <<
113 help <<
114 This allows you to specify the maxim <<
115 kernel will support. The maximum su <<
116 minimum value which makes sense is 2 <<
117 417
118 This is purely to save memory - each !! 418 endmenu
119 approximately eight kilobytes to the !! 419 endif
120 420
121 source "kernel/Kconfig.hz" !! 421 endmenu
>> 422
>> 423 menu "Bus options (PCI etc.)"
>> 424 config SBUS
>> 425 bool
>> 426 default y
>> 427
>> 428 config SBUSCHAR
>> 429 bool
>> 430 default y
>> 431
>> 432 config SUN_LDOMS
>> 433 bool "Sun Logical Domains support"
>> 434 depends on SPARC64
>> 435 help
>> 436 Say Y here is you want to support virtual devices via
>> 437 Logical Domains.
>> 438
>> 439 config PCIC_PCI
>> 440 bool
>> 441 depends on PCI && SPARC32 && !SPARC_LEON
>> 442 default y
>> 443
>> 444 config LEON_PCI
>> 445 bool
>> 446 depends on PCI && SPARC_LEON
>> 447 default y
>> 448
>> 449 config SPARC_GRPCI1
>> 450 bool "GRPCI Host Bridge Support"
>> 451 depends on LEON_PCI
>> 452 default y
>> 453 help
>> 454 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
>> 455 PCI host controller is typically found in GRLIB SPARC32/LEON
>> 456 systems. The driver has one property (all_pci_errors) controlled
>> 457 from the bootloader that makes the GRPCI to generate interrupts
>> 458 on detected PCI Parity and System errors.
>> 459
>> 460 config SPARC_GRPCI2
>> 461 bool "GRPCI2 Host Bridge Support"
>> 462 depends on LEON_PCI
>> 463 default y
>> 464 help
>> 465 Say Y here to include the GRPCI2 Host Bridge Driver.
>> 466
>> 467 config SUN_OPENPROMFS
>> 468 tristate "Openprom tree appears in /proc/openprom"
>> 469 help
>> 470 If you say Y, the OpenPROM device tree will be available as a
>> 471 virtual file system, which you can mount to /proc/openprom by "mount
>> 472 -t openpromfs none /proc/openprom".
>> 473
>> 474 To compile the /proc/openprom support as a module, choose M here: the
>> 475 module will be called openpromfs.
>> 476
>> 477 Only choose N if you know in advance that you will not need to modify
>> 478 OpenPROM settings on the running system.
>> 479
>> 480 # Makefile helpers
>> 481 config SPARC64_PCI
>> 482 bool
>> 483 default y
>> 484 depends on SPARC64 && PCI
>> 485
>> 486 config SPARC64_PCI_MSI
>> 487 bool
>> 488 default y
>> 489 depends on SPARC64_PCI && PCI_MSI
122 490
123 endmenu 491 endmenu
>> 492
>> 493 config COMPAT
>> 494 bool
>> 495 depends on SPARC64
>> 496 default y
>> 497 select HAVE_UID16
>> 498 select ARCH_WANT_OLD_COMPAT_IPC
>> 499 select COMPAT_OLD_SIGACTION
>> 500
>> 501 config SYSVIPC_COMPAT
>> 502 bool
>> 503 depends on COMPAT && SYSVIPC
>> 504 default y
>> 505
>> 506 source "drivers/sbus/char/Kconfig"
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