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