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