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