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