arch/arm/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 source "lib/Kconfig.debug"
   4
   5 config ARM_PTDUMP
   6         bool "Export kernel pagetable layout to userspace via debugfs"
   7         depends on DEBUG_KERNEL
   8         select DEBUG_FS
   9         ---help---
  10           Say Y here if you want to show the kernel pagetable layout in a
  11           debugfs file. This information is only useful for kernel developers
  12           who are working in architecture specific areas of the kernel.
  13           It is probably not a good idea to enable this feature in a production
  14           kernel.
  15           If in doubt, say "N"
  16
  17 config STRICT_DEVMEM
  18         bool "Filter access to /dev/mem"
  19         depends on MMU
  20         ---help---
  21           If this option is disabled, you allow userspace (root) access to all
  22           of memory, including kernel and userspace memory. Accidental
  23           access to this is obviously disastrous, but specific access can
  24           be used by people debugging the kernel.
  25
  26           If this option is switched on, the /dev/mem file only allows
  27           userspace access to memory mapped peripherals.
  28
  29           If in doubt, say Y.
  30
  31 # RMK wants arm kernels compiled with frame pointers or stack unwinding.
  32 # If you know what you are doing and are willing to live without stack
  33 # traces, you can get a slightly smaller kernel by setting this option to
  34 # n, but then RMK will have to kill you ;).
  35 config FRAME_POINTER
  36         bool
  37         depends on !THUMB2_KERNEL
  38         default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
  39         help
  40           If you say N here, the resulting kernel will be slightly smaller and
  41           faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
  42           when a problem occurs with the kernel, the information that is
  43           reported is severely limited.
  44
  45 config ARM_UNWIND
  46         bool "Enable stack unwinding support (EXPERIMENTAL)"
  47         depends on AEABI
  48         default y
  49         help
  50           This option enables stack unwinding support in the kernel
  51           using the information automatically generated by the
  52           compiler. The resulting kernel image is slightly bigger but
  53           the performance is not affected. Currently, this feature
  54           only works with EABI compilers. If unsure say Y.
  55
  56 config OLD_MCOUNT
  57         bool
  58         depends on FUNCTION_TRACER && FRAME_POINTER
  59         default y
  60
  61 config DEBUG_USER
  62         bool "Verbose user fault messages"
  63         help
  64           When a user program crashes due to an exception, the kernel can
  65           print a brief message explaining what the problem was. This is
  66           sometimes helpful for debugging but serves no purpose on a
  67           production system. Most people should say N here.
  68
  69           In addition, you need to pass user_debug=N on the kernel command
  70           line to enable this feature.  N consists of the sum of:
  71
  72               1 - undefined instruction events
  73               2 - system calls
  74               4 - invalid data aborts
  75               8 - SIGSEGV faults
  76              16 - SIGBUS faults
  77
  78 # These options are only for real kernel hackers who want to get their hands dirty.
  79 config DEBUG_LL
  80         bool "Kernel low-level debugging functions (read help!)"
  81         depends on DEBUG_KERNEL
  82         help
  83           Say Y here to include definitions of printascii, printch, printhex
  84           in the kernel.  This is helpful if you are debugging code that
  85           executes before the console is initialized.
  86
  87           Note that selecting this option will limit the kernel to a single
  88           UART definition, as specified below. Attempting to boot the kernel
  89           image on a different platform *will not work*, so this option should
  90           not be enabled for kernels that are intended to be portable.
  91
  92 choice
  93         prompt "Kernel low-level debugging port"
  94         depends on DEBUG_LL
  95
  96         config DEBUG_ALPINE_UART0
  97                 bool "Kernel low-level debugging messages via Alpine UART0"
  98                 depends on ARCH_ALPINE
  99                 select DEBUG_UART_8250
 100                 help
 101                   Say Y here if you want kernel low-level debugging support
 102                   on Alpine based platforms.
 103
 104         config DEBUG_ASM9260_UART
 105                 bool "Kernel low-level debugging via asm9260 UART"
 106                 depends on MACH_ASM9260
 107                 help
 108                   Say Y here if you want the debug print routines to direct
 109                   their output to an UART or USART port on asm9260 based
 110                   machines.
 111
 112                     DEBUG_UART_PHYS | DEBUG_UART_VIRT
 113
 114                     0x80000000      | 0xf0000000     | UART0
 115                     0x80004000      | 0xf0004000     | UART1
 116                     0x80008000      | 0xf0008000     | UART2
 117                     0x8000c000      | 0xf000c000     | UART3
 118                     0x80010000      | 0xf0010000     | UART4
 119                     0x80014000      | 0xf0014000     | UART5
 120                     0x80018000      | 0xf0018000     | UART6
 121                     0x8001c000      | 0xf001c000     | UART7
 122                     0x80020000      | 0xf0020000     | UART8
 123                     0x80024000      | 0xf0024000     | UART9
 124
 125         config AT91_DEBUG_LL_DBGU0
 126                 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10, 9rl, 9x5, 9n12"
 127                 select DEBUG_AT91_UART
 128                 depends on ARCH_AT91
 129                 depends on SOC_AT91RM9200 || SOC_AT91SAM9
 130
 131         config AT91_DEBUG_LL_DBGU1
 132                 bool "Kernel low-level debugging on 9263, 9g45 and sama5d3"
 133                 select DEBUG_AT91_UART
 134                 depends on ARCH_AT91
 135                 depends on SOC_AT91SAM9 || SOC_SAMA5
 136
 137         config AT91_DEBUG_LL_DBGU2
 138                 bool "Kernel low-level debugging on sama5d4"
 139                 select DEBUG_AT91_UART
 140                 depends on ARCH_AT91
 141                 depends on SOC_SAMA5
 142
 143         config DEBUG_BCM2835
 144                 bool "Kernel low-level debugging on BCM2835 PL011 UART"
 145                 depends on ARCH_BCM2835
 146                 select DEBUG_UART_PL01X
 147
 148         config DEBUG_BCM_5301X
 149                 bool "Kernel low-level debugging on BCM5301X UART1"
 150                 depends on ARCH_BCM_5301X
 151                 select DEBUG_UART_8250
 152
 153         config DEBUG_BCM_KONA_UART
 154                 bool "Kernel low-level debugging messages via BCM KONA UART"
 155                 depends on ARCH_BCM_MOBILE
 156                 select DEBUG_UART_8250
 157                 help
 158                   Say Y here if you want kernel low-level debugging support
 159                   on Broadcom SoC platforms.
 160                   This low level debug works for Broadcom
 161                   mobile SoCs in the Kona family of chips (e.g. bcm28155,
 162                   bcm11351, etc...)
 163
 164         config DEBUG_BCM63XX
 165                 bool "Kernel low-level debugging on BCM63XX UART"
 166                 depends on ARCH_BCM_63XX
 167                 select DEBUG_UART_BCM63XX
 168
 169         config DEBUG_BERLIN_UART
 170                 bool "Marvell Berlin SoC Debug UART"
 171                 depends on ARCH_BERLIN
 172                 select DEBUG_UART_8250
 173                 help
 174                   Say Y here if you want kernel low-level debugging support
 175                   on Marvell Berlin SoC based platforms.
 176
 177         config DEBUG_BRCMSTB_UART
 178                 bool "Use BRCMSTB UART for low-level debug"
 179                 depends on ARCH_BRCMSTB
 180                 select DEBUG_UART_8250
 181                 help
 182                   Say Y here if you want the debug print routines to direct
 183                   their output to the first serial port on these devices.
 184
 185                   If you have a Broadcom STB chip and would like early print
 186                   messages to appear over the UART, select this option.
 187
 188         config DEBUG_CLPS711X_UART1
 189                 bool "Kernel low-level debugging messages via UART1"
 190                 depends on ARCH_CLPS711X
 191                 help
 192                   Say Y here if you want the debug print routines to direct
 193                   their output to the first serial port on these devices.
 194
 195         config DEBUG_CLPS711X_UART2
 196                 bool "Kernel low-level debugging messages via UART2"
 197                 depends on ARCH_CLPS711X
 198                 help
 199                   Say Y here if you want the debug print routines to direct
 200                   their output to the second serial port on these devices.
 201
 202         config DEBUG_CNS3XXX
 203                 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
 204                 depends on ARCH_CNS3XXX
 205                 select DEBUG_UART_8250
 206                 help
 207                   Say Y here if you want the debug print routines to direct
 208                   their output to the CNS3xxx UART0.
 209
 210         config DEBUG_DAVINCI_DA8XX_UART1
 211                 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
 212                 depends on ARCH_DAVINCI_DA8XX
 213                 select DEBUG_UART_8250
 214                 help
 215                   Say Y here if you want the debug print routines to direct
 216                   their output to UART1 serial port on DaVinci DA8XX devices.
 217
 218         config DEBUG_DAVINCI_DA8XX_UART2
 219                 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
 220                 depends on ARCH_DAVINCI_DA8XX
 221                 select DEBUG_UART_8250
 222                 help
 223                   Say Y here if you want the debug print routines to direct
 224                   their output to UART2 serial port on DaVinci DA8XX devices.
 225
 226         config DEBUG_DAVINCI_DMx_UART0
 227                 bool "Kernel low-level debugging on DaVinci DMx using UART0"
 228                 depends on ARCH_DAVINCI_DMx
 229                 select DEBUG_UART_8250
 230                 help
 231                   Say Y here if you want the debug print routines to direct
 232                   their output to UART0 serial port on DaVinci DMx devices.
 233
 234         config DEBUG_ZYNQ_UART0
 235                 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
 236                 depends on ARCH_ZYNQ
 237                 help
 238                   Say Y here if you want the debug print routines to direct
 239                   their output to UART0 on the Zynq platform.
 240
 241         config DEBUG_ZYNQ_UART1
 242                 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
 243                 depends on ARCH_ZYNQ
 244                 help
 245                   Say Y here if you want the debug print routines to direct
 246                   their output to UART1 on the Zynq platform.
 247
 248                   If you have a ZC702 board and want early boot messages to
 249                   appear on the USB serial adaptor, select this option.
 250
 251         config DEBUG_DC21285_PORT
 252                 bool "Kernel low-level debugging messages via footbridge serial port"
 253                 depends on FOOTBRIDGE
 254                 help
 255                   Say Y here if you want the debug print routines to direct
 256                   their output to the serial port in the DC21285 (Footbridge).
 257
 258         config DEBUG_DIGICOLOR_UA0
 259                 bool "Kernel low-level debugging messages via Digicolor UA0"
 260                 depends on ARCH_DIGICOLOR
 261                 help
 262                   Say Y here if you want the debug print routines to direct
 263                   their output to the UA0 serial port in the CX92755.
 264
 265         config DEBUG_FOOTBRIDGE_COM1
 266                 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
 267                 depends on FOOTBRIDGE
 268                 help
 269                   Say Y here if you want the debug print routines to direct
 270                   their output to the 8250 at PCI COM1.
 271
 272         config DEBUG_HI3620_UART
 273                 bool "Hisilicon HI3620 Debug UART"
 274                 depends on ARCH_HI3xxx
 275                 select DEBUG_UART_PL01X
 276                 help
 277                   Say Y here if you want kernel low-level debugging support
 278                   on HI3620 UART.
 279
 280         config DEBUG_HI3716_UART
 281                 bool "Hisilicon Hi3716 Debug UART"
 282                 depends on ARCH_HI3xxx
 283                 select DEBUG_UART_PL01X
 284                 help
 285                   Say Y here if you want kernel low-level debugging support
 286                   on HI3716 UART.
 287
 288         config DEBUG_HIGHBANK_UART
 289                 bool "Kernel low-level debugging messages via Highbank UART"
 290                 depends on ARCH_HIGHBANK
 291                 select DEBUG_UART_PL01X
 292                 help
 293                   Say Y here if you want the debug print routines to direct
 294                   their output to the UART on Highbank based devices.
 295
 296         config DEBUG_HIP01_UART
 297                 bool "Hisilicon Hip01 Debug UART"
 298                 depends on ARCH_HIP01
 299                 select DEBUG_UART_8250
 300                 help
 301                   Say Y here if you want kernel low-level debugging support
 302                   on HIP01 UART.
 303
 304         config DEBUG_HIP04_UART
 305                 bool "Hisilicon HiP04 Debug UART"
 306                 depends on ARCH_HIP04
 307                 select DEBUG_UART_8250
 308                 help
 309                   Say Y here if you want kernel low-level debugging support
 310                   on HIP04 UART.
 311
 312         config DEBUG_HIX5HD2_UART
 313                 bool "Hisilicon Hix5hd2 Debug UART"
 314                 depends on ARCH_HIX5HD2
 315                 select DEBUG_UART_PL01X
 316                 help
 317                   Say Y here if you want kernel low-level debugging support
 318                   on Hix5hd2 UART.
 319
 320         config DEBUG_IMX1_UART
 321                 bool "i.MX1 Debug UART"
 322                 depends on SOC_IMX1
 323                 help
 324                   Say Y here if you want kernel low-level debugging support
 325                   on i.MX1.
 326
 327         config DEBUG_IMX23_UART
 328                 bool "i.MX23 Debug UART"
 329                 depends on SOC_IMX23
 330                 select DEBUG_UART_PL01X
 331                 help
 332                   Say Y here if you want kernel low-level debugging support
 333                   on i.MX23.
 334
 335         config DEBUG_IMX25_UART
 336                 bool "i.MX25 Debug UART"
 337                 depends on SOC_IMX25
 338                 help
 339                   Say Y here if you want kernel low-level debugging support
 340                   on i.MX25.
 341
 342         config DEBUG_IMX21_IMX27_UART
 343                 bool "i.MX21 and i.MX27 Debug UART"
 344                 depends on SOC_IMX21 || SOC_IMX27
 345                 help
 346                   Say Y here if you want kernel low-level debugging support
 347                   on i.MX21 or i.MX27.
 348
 349         config DEBUG_IMX28_UART
 350                 bool "i.MX28 Debug UART"
 351                 depends on SOC_IMX28
 352                 select DEBUG_UART_PL01X
 353                 help
 354                   Say Y here if you want kernel low-level debugging support
 355                   on i.MX28.
 356
 357         config DEBUG_IMX31_UART
 358                 bool "i.MX31 Debug UART"
 359                 depends on SOC_IMX31
 360                 help
 361                   Say Y here if you want kernel low-level debugging support
 362                   on i.MX31.
 363
 364         config DEBUG_IMX35_UART
 365                 bool "i.MX35 Debug UART"
 366                 depends on SOC_IMX35
 367                 help
 368                   Say Y here if you want kernel low-level debugging support
 369                   on i.MX35.
 370
 371         config DEBUG_IMX50_UART
 372                 bool "i.MX50 Debug UART"
 373                 depends on SOC_IMX50
 374                 help
 375                   Say Y here if you want kernel low-level debugging support
 376                   on i.MX50.
 377
 378         config DEBUG_IMX51_UART
 379                 bool "i.MX51 Debug UART"
 380                 depends on SOC_IMX51
 381                 help
 382                   Say Y here if you want kernel low-level debugging support
 383                   on i.MX51.
 384
 385         config DEBUG_IMX53_UART
 386                 bool "i.MX53 Debug UART"
 387                 depends on SOC_IMX53
 388                 help
 389                   Say Y here if you want kernel low-level debugging support
 390                   on i.MX53.
 391
 392         config DEBUG_IMX6Q_UART
 393                 bool "i.MX6Q/DL Debug UART"
 394                 depends on SOC_IMX6Q
 395                 help
 396                   Say Y here if you want kernel low-level debugging support
 397                   on i.MX6Q/DL.
 398
 399         config DEBUG_IMX6SL_UART
 400                 bool "i.MX6SL Debug UART"
 401                 depends on SOC_IMX6SL
 402                 help
 403                   Say Y here if you want kernel low-level debugging support
 404                   on i.MX6SL.
 405
 406         config DEBUG_IMX6SX_UART
 407                 bool "i.MX6SX Debug UART"
 408                 depends on SOC_IMX6SX
 409                 help
 410                   Say Y here if you want kernel low-level debugging support
 411                   on i.MX6SX.
 412
 413         config DEBUG_KEYSTONE_UART0
 414                 bool "Kernel low-level debugging on KEYSTONE2 using UART0"
 415                 depends on ARCH_KEYSTONE
 416                 select DEBUG_UART_8250
 417                 help
 418                   Say Y here if you want the debug print routines to direct
 419                   their output to UART0 serial port on KEYSTONE2 devices.
 420
 421         config DEBUG_KEYSTONE_UART1
 422                 bool "Kernel low-level debugging on KEYSTONE2 using UART1"
 423                 depends on ARCH_KEYSTONE
 424                 select DEBUG_UART_8250
 425                 help
 426                   Say Y here if you want the debug print routines to direct
 427                   their output to UART1 serial port on KEYSTONE2 devices.
 428
 429         config DEBUG_KS8695_UART
 430                 bool "KS8695 Debug UART"
 431                 depends on ARCH_KS8695
 432                 help
 433                   Say Y here if you want kernel low-level debugging support
 434                   on KS8695.
 435
 436         config DEBUG_MESON_UARTAO
 437                 bool "Kernel low-level debugging via Meson6 UARTAO"
 438                 depends on ARCH_MESON
 439                 help
 440                   Say Y here if you want kernel low-lever debugging support
 441                   on Amlogic Meson6 based platforms on the UARTAO.
 442
 443         config DEBUG_MMP_UART2
 444                 bool "Kernel low-level debugging message via MMP UART2"
 445                 depends on ARCH_MMP
 446                 select DEBUG_UART_8250
 447                 help
 448                   Say Y here if you want kernel low-level debugging support
 449                   on MMP UART2.
 450
 451         config DEBUG_MMP_UART3
 452                 bool "Kernel low-level debugging message via MMP UART3"
 453                 depends on ARCH_MMP
 454                 select DEBUG_UART_8250
 455                 help
 456                   Say Y here if you want kernel low-level debugging support
 457                   on MMP UART3.
 458
 459         config DEBUG_QCOM_UARTDM
 460                 bool "Kernel low-level debugging messages via QCOM UARTDM"
 461                 depends on ARCH_QCOM
 462                 help
 463                   Say Y here if you want the debug print routines to direct
 464                   their output to the serial port on Qualcomm devices.
 465
 466                   ARCH      DEBUG_UART_PHYS   DEBUG_UART_VIRT
 467                   APQ8064   0x16640000        0xf0040000
 468                   APQ8084   0xf995e000        0xfa75e000
 469                   MSM8X60   0x19c40000        0xf0040000
 470                   MSM8960   0x16440000        0xf0040000
 471                   MSM8974   0xf991e000        0xfa71e000
 472
 473                   Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration
 474                   options based on your needs.
 475
 476         config DEBUG_MVEBU_UART0
 477                 bool "Kernel low-level debugging messages via MVEBU UART0 (old bootloaders)"
 478                 depends on ARCH_MVEBU
 479                 select DEBUG_UART_8250
 480                 help
 481                   Say Y here if you want kernel low-level debugging support
 482                   on MVEBU based platforms on UART0.
 483
 484                   This option should be used with the old bootloaders
 485                   that left the internal registers mapped at
 486                   0xd0000000. As of today, this is the case on
 487                   platforms such as the Globalscale Mirabox or the
 488                   Plathome OpenBlocks AX3, when using the original
 489                   bootloader.
 490
 491                   If the wrong DEBUG_MVEBU_UART* option is selected,
 492                   when u-boot hands over to the kernel, the system
 493                   silently crashes, with no serial output at all.
 494
 495         config DEBUG_MVEBU_UART0_ALTERNATE
 496                 bool "Kernel low-level debugging messages via MVEBU UART0 (new bootloaders)"
 497                 depends on ARCH_MVEBU
 498                 select DEBUG_UART_8250
 499                 help
 500                   Say Y here if you want kernel low-level debugging support
 501                   on MVEBU based platforms on UART0.
 502
 503                   This option should be used with the new bootloaders
 504                   that remap the internal registers at 0xf1000000.
 505
 506                   If the wrong DEBUG_MVEBU_UART* option is selected,
 507                   when u-boot hands over to the kernel, the system
 508                   silently crashes, with no serial output at all.
 509
 510         config DEBUG_MVEBU_UART1_ALTERNATE
 511                 bool "Kernel low-level debugging messages via MVEBU UART1 (new bootloaders)"
 512                 depends on ARCH_MVEBU
 513                 select DEBUG_UART_8250
 514                 help
 515                   Say Y here if you want kernel low-level debugging support
 516                   on MVEBU based platforms on UART1.
 517
 518                   This option should be used with the new bootloaders
 519                   that remap the internal registers at 0xf1000000.
 520
 521                   If the wrong DEBUG_MVEBU_UART* option is selected,
 522                   when u-boot hands over to the kernel, the system
 523                   silently crashes, with no serial output at all.
 524
 525         config DEBUG_VF_UART
 526                 bool "Vybrid UART"
 527                 depends on SOC_VF610
 528                 help
 529                   Say Y here if you want kernel low-level debugging support
 530                   on Vybrid based platforms.
 531
 532         config DEBUG_NETX_UART
 533                 bool "Kernel low-level debugging messages via NetX UART"
 534                 depends on ARCH_NETX
 535                 help
 536                   Say Y here if you want kernel low-level debugging support
 537                   on Hilscher NetX based platforms.
 538
 539         config DEBUG_NOMADIK_UART
 540                 bool "Kernel low-level debugging messages via NOMADIK UART"
 541                 depends on ARCH_NOMADIK
 542                 select DEBUG_UART_PL01X
 543                 help
 544                   Say Y here if you want kernel low-level debugging support
 545                   on NOMADIK based platforms.
 546
 547         config DEBUG_NSPIRE_CLASSIC_UART
 548                 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART"
 549                 depends on ARCH_NSPIRE
 550                 select DEBUG_UART_8250
 551                 help
 552                   Say Y here if you want kernel low-level debugging support
 553                   on TI-NSPIRE classic models.
 554
 555         config DEBUG_NSPIRE_CX_UART
 556                 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART"
 557                 depends on ARCH_NSPIRE
 558                 select DEBUG_UART_PL01X
 559                 help
 560                   Say Y here if you want kernel low-level debugging support
 561                   on TI-NSPIRE CX models.
 562
 563         config DEBUG_OMAP1UART1
 564                 bool "Kernel low-level debugging via OMAP1 UART1"
 565                 depends on ARCH_OMAP1
 566                 select DEBUG_UART_8250
 567                 help
 568                   Say Y here if you want kernel low-level debugging support
 569                   on OMAP1 based platforms (except OMAP730) on the UART1.
 570
 571         config DEBUG_OMAP1UART2
 572                 bool "Kernel low-level debugging via OMAP1 UART2"
 573                 depends on ARCH_OMAP1
 574                 select DEBUG_UART_8250
 575                 help
 576                   Say Y here if you want kernel low-level debugging support
 577                   on OMAP1 based platforms (except OMAP730) on the UART2.
 578
 579         config DEBUG_OMAP1UART3
 580                 bool "Kernel low-level debugging via OMAP1 UART3"
 581                 depends on ARCH_OMAP1
 582                 select DEBUG_UART_8250
 583                 help
 584                   Say Y here if you want kernel low-level debugging support
 585                   on OMAP1 based platforms (except OMAP730) on the UART3.
 586
 587         config DEBUG_OMAP2UART1
 588                 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
 589                 depends on ARCH_OMAP2PLUS
 590                 select DEBUG_OMAP2PLUS_UART
 591                 help
 592                   This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
 593                   omap3 torpedo and 3530 lv som.
 594
 595         config DEBUG_OMAP2UART2
 596                 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2"
 597                 depends on ARCH_OMAP2PLUS
 598                 select DEBUG_OMAP2PLUS_UART
 599
 600         config DEBUG_OMAP2UART3
 601                 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)"
 602                 depends on ARCH_OMAP2PLUS
 603                 select DEBUG_OMAP2PLUS_UART
 604
 605         config DEBUG_OMAP3UART3
 606                 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)"
 607                 depends on ARCH_OMAP2PLUS
 608                 select DEBUG_OMAP2PLUS_UART
 609                 help
 610                   This covers at least cm_t3x, beagle, crane, devkit8000,
 611                   igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
 612                   and 3517evm.
 613
 614         config DEBUG_OMAP4UART3
 615                 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
 616                 depends on ARCH_OMAP2PLUS
 617                 select DEBUG_OMAP2PLUS_UART
 618
 619         config DEBUG_OMAP3UART4
 620                 bool "Kernel low-level debugging messages via OMAP36XX UART4"
 621                 depends on ARCH_OMAP2PLUS
 622                 select DEBUG_OMAP2PLUS_UART
 623
 624         config DEBUG_OMAP4UART4
 625                 bool "Kernel low-level debugging messages via OMAP4/5 UART4"
 626                 depends on ARCH_OMAP2PLUS
 627                 select DEBUG_OMAP2PLUS_UART
 628
 629         config DEBUG_OMAP7XXUART1
 630                 bool "Kernel low-level debugging via OMAP730 UART1"
 631                 depends on ARCH_OMAP730
 632                 select DEBUG_UART_8250
 633                 help
 634                   Say Y here if you want kernel low-level debugging support
 635                   on OMAP730 based platforms on the UART1.
 636
 637         config DEBUG_OMAP7XXUART2
 638                 bool "Kernel low-level debugging via OMAP730 UART2"
 639                 depends on ARCH_OMAP730
 640                 select DEBUG_UART_8250
 641                 help
 642                   Say Y here if you want kernel low-level debugging support
 643                   on OMAP730 based platforms on the UART2.
 644
 645         config DEBUG_OMAP7XXUART3
 646                 bool "Kernel low-level debugging via OMAP730 UART3"
 647                 depends on ARCH_OMAP730
 648                 select DEBUG_UART_8250
 649                 help
 650                   Say Y here if you want kernel low-level debugging support
 651                   on OMAP730 based platforms on the UART3.
 652
 653         config DEBUG_TI81XXUART1
 654                 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)"
 655                 depends on ARCH_OMAP2PLUS
 656                 select DEBUG_OMAP2PLUS_UART
 657
 658         config DEBUG_TI81XXUART2
 659                 bool "Kernel low-level debugging messages via TI81XX UART2"
 660                 depends on ARCH_OMAP2PLUS
 661                 select DEBUG_OMAP2PLUS_UART
 662
 663         config DEBUG_TI81XXUART3
 664                 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)"
 665                 depends on ARCH_OMAP2PLUS
 666                 select DEBUG_OMAP2PLUS_UART
 667
 668         config DEBUG_AM33XXUART1
 669                 bool "Kernel low-level debugging messages via AM33XX UART1"
 670                 depends on ARCH_OMAP2PLUS
 671                 select DEBUG_OMAP2PLUS_UART
 672
 673         config DEBUG_ZOOM_UART
 674                 bool "Kernel low-level debugging messages via Zoom2/3 UART"
 675                 depends on ARCH_OMAP2PLUS
 676                 select DEBUG_OMAP2PLUS_UART
 677
 678         config DEBUG_PICOXCELL_UART
 679                 depends on ARCH_PICOXCELL
 680                 bool "Use PicoXcell UART for low-level debug"
 681                 select DEBUG_UART_8250
 682                 help
 683                   Say Y here if you want kernel low-level debugging support
 684                   on PicoXcell based platforms.
 685
 686         config DEBUG_PXA_UART1
 687                 depends on ARCH_PXA
 688                 bool "Use PXA UART1 for low-level debug"
 689                 select DEBUG_UART_8250
 690                 help
 691                   Say Y here if you want kernel low-level debugging support
 692                   on PXA UART1.
 693
 694         config DEBUG_REALVIEW_STD_PORT
 695                 bool "RealView Default UART"
 696                 depends on ARCH_REALVIEW
 697                 select DEBUG_UART_PL01X
 698                 help
 699                   Say Y here if you want the debug print routines to direct
 700                   their output to the serial port on RealView EB, PB11MP, PBA8
 701                   and PBX platforms.
 702
 703         config DEBUG_REALVIEW_PB1176_PORT
 704                 bool "RealView PB1176 UART"
 705                 depends on MACH_REALVIEW_PB1176
 706                 select DEBUG_UART_PL01X
 707                 help
 708                   Say Y here if you want the debug print routines to direct
 709                   their output to the standard serial port on the RealView
 710                   PB1176 platform.
 711
 712         config DEBUG_RK29_UART0
 713                 bool "Kernel low-level debugging messages via Rockchip RK29 UART0"
 714                 depends on ARCH_ROCKCHIP
 715                 select DEBUG_UART_8250
 716                 help
 717                   Say Y here if you want kernel low-level debugging support
 718                   on Rockchip based platforms.
 719
 720         config DEBUG_RK29_UART1
 721                 bool "Kernel low-level debugging messages via Rockchip RK29 UART1"
 722                 depends on ARCH_ROCKCHIP
 723                 select DEBUG_UART_8250
 724                 help
 725                   Say Y here if you want kernel low-level debugging support
 726                   on Rockchip based platforms.
 727
 728         config DEBUG_RK29_UART2
 729                 bool "Kernel low-level debugging messages via Rockchip RK29 UART2"
 730                 depends on ARCH_ROCKCHIP
 731                 select DEBUG_UART_8250
 732                 help
 733                   Say Y here if you want kernel low-level debugging support
 734                   on Rockchip based platforms.
 735
 736         config DEBUG_RK3X_UART0
 737                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART0"
 738                 depends on ARCH_ROCKCHIP
 739                 select DEBUG_UART_8250
 740                 help
 741                   Say Y here if you want kernel low-level debugging support
 742                   on Rockchip based platforms.
 743
 744         config DEBUG_RK3X_UART1
 745                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART1"
 746                 depends on ARCH_ROCKCHIP
 747                 select DEBUG_UART_8250
 748                 help
 749                   Say Y here if you want kernel low-level debugging support
 750                   on Rockchip based platforms.
 751
 752         config DEBUG_RK3X_UART2
 753                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART2"
 754                 depends on ARCH_ROCKCHIP
 755                 select DEBUG_UART_8250
 756                 help
 757                   Say Y here if you want kernel low-level debugging support
 758                   on Rockchip based platforms.
 759
 760         config DEBUG_RK3X_UART3
 761                 bool "Kernel low-level debugging messages via Rockchip RK30/RK31 UART3"
 762                 depends on ARCH_ROCKCHIP
 763                 select DEBUG_UART_8250
 764                 help
 765                   Say Y here if you want kernel low-level debugging support
 766                   on Rockchip based platforms.
 767
 768         config DEBUG_RK32_UART2
 769                 bool "Kernel low-level debugging messages via Rockchip RK32 UART2"
 770                 depends on ARCH_ROCKCHIP
 771                 select DEBUG_UART_8250
 772                 help
 773                   Say Y here if you want kernel low-level debugging support
 774                   on Rockchip RK32xx based platforms.
 775
 776         config DEBUG_R7S72100_SCIF2
 777                 bool "Kernel low-level debugging messages via SCIF2 on R7S72100"
 778                 depends on ARCH_R7S72100
 779                 help
 780                   Say Y here if you want kernel low-level debugging support
 781                   via SCIF2 on Renesas RZ/A1H (R7S72100).
 782
 783         config DEBUG_RCAR_GEN1_SCIF0
 784                 bool "Kernel low-level debugging messages via SCIF0 on R8A7778"
 785                 depends on ARCH_R8A7778
 786                 help
 787                   Say Y here if you want kernel low-level debugging support
 788                   via SCIF0 on Renesas R-Car M1A (R8A7778).
 789
 790         config DEBUG_RCAR_GEN1_SCIF2
 791                 bool "Kernel low-level debugging messages via SCIF2 on R8A7779"
 792                 depends on ARCH_R8A7779
 793                 help
 794                   Say Y here if you want kernel low-level debugging support
 795                   via SCIF2 on Renesas R-Car H1 (R8A7779).
 796
 797         config DEBUG_RCAR_GEN2_SCIF0
 798                 bool "Kernel low-level debugging messages via SCIF0 on R8A7790/R8A7791/R8A7793"
 799                 depends on ARCH_R8A7790 || ARCH_R8A7791 || ARCH_R8A7793
 800                 help
 801                   Say Y here if you want kernel low-level debugging support
 802                   via SCIF0 on Renesas R-Car H2 (R8A7790), M2-W (R8A7791), or
 803                   M2-N (R8A7793).
 804
 805         config DEBUG_RCAR_GEN2_SCIF2
 806                 bool "Kernel low-level debugging messages via SCIF2 on R8A7794"
 807                 depends on ARCH_R8A7794
 808                 help
 809                   Say Y here if you want kernel low-level debugging support
 810                   via SCIF2 on Renesas R-Car E2 (R8A7794).
 811
 812         config DEBUG_RMOBILE_SCIFA0
 813                 bool "Kernel low-level debugging messages via SCIFA0 on R8A73A4"
 814                 depends on ARCH_R8A73A4
 815                 help
 816                   Say Y here if you want kernel low-level debugging support
 817                   via SCIFA0 on Renesas R-Mobile APE6 (R8A73A4).
 818
 819         config DEBUG_RMOBILE_SCIFA1
 820                 bool "Kernel low-level debugging messages via SCIFA1 on R8A7740"
 821                 depends on ARCH_R8A7740
 822                 help
 823                   Say Y here if you want kernel low-level debugging support
 824                   via SCIFA1 on Renesas R-Mobile A1 (R8A7740).
 825
 826         config DEBUG_RMOBILE_SCIFA4
 827                 bool "Kernel low-level debugging messages via SCIFA4 on SH73A0"
 828                 depends on ARCH_SH73A0
 829                 help
 830                   Say Y here if you want kernel low-level debugging support
 831                   via SCIFA4 on Renesas SH-Mobile AG5 (SH73A0).
 832
 833         config DEBUG_S3C_UART0
 834                 depends on PLAT_SAMSUNG
 835                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 836                 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
 837                 select DEBUG_S5PV210_UART if ARCH_S5PV210
 838                 bool "Use Samsung S3C UART 0 for low-level debug"
 839                 help
 840                   Say Y here if you want the debug print routines to direct
 841                   their output to UART 0. The port must have been initialised
 842                   by the boot-loader before use.
 843
 844         config DEBUG_S3C_UART1
 845                 depends on PLAT_SAMSUNG
 846                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 847                 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
 848                 select DEBUG_S5PV210_UART if ARCH_S5PV210
 849                 bool "Use Samsung S3C UART 1 for low-level debug"
 850                 help
 851                   Say Y here if you want the debug print routines to direct
 852                   their output to UART 1. The port must have been initialised
 853                   by the boot-loader before use.
 854
 855         config DEBUG_S3C_UART2
 856                 depends on PLAT_SAMSUNG
 857                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 858                 select DEBUG_S3C24XX_UART if ARCH_S3C24XX
 859                 select DEBUG_S5PV210_UART if ARCH_S5PV210
 860                 bool "Use Samsung S3C UART 2 for low-level debug"
 861                 help
 862                   Say Y here if you want the debug print routines to direct
 863                   their output to UART 2. The port must have been initialised
 864                   by the boot-loader before use.
 865
 866         config DEBUG_S3C_UART3
 867                 depends on PLAT_SAMSUNG && (ARCH_EXYNOS || ARCH_S5PV210)
 868                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 869                 select DEBUG_S5PV210_UART if ARCH_S5PV210
 870                 bool "Use Samsung S3C UART 3 for low-level debug"
 871                 help
 872                   Say Y here if you want the debug print routines to direct
 873                   their output to UART 3. The port must have been initialised
 874                   by the boot-loader before use.
 875
 876         config DEBUG_S3C2410_UART0
 877                 depends on ARCH_S3C24XX
 878                 select DEBUG_S3C2410_UART
 879                 bool "Use S3C2410/S3C2412 UART 0 for low-level debug"
 880                 help
 881                   Say Y here if you want the debug print routines to direct
 882                   their output to UART 0. The port must have been initialised
 883                   by the boot-loader before use.
 884
 885         config DEBUG_S3C2410_UART1
 886                 depends on ARCH_S3C24XX
 887                 select DEBUG_S3C2410_UART
 888                 bool "Use S3C2410/S3C2412 UART 1 for low-level debug"
 889                 help
 890                   Say Y here if you want the debug print routines to direct
 891                   their output to UART 1. The port must have been initialised
 892                   by the boot-loader before use.
 893
 894         config DEBUG_S3C2410_UART2
 895                 depends on ARCH_S3C24XX
 896                 select DEBUG_S3C2410_UART
 897                 bool "Use S3C2410/S3C2412 UART 2 for low-level debug"
 898                 help
 899                   Say Y here if you want the debug print routines to direct
 900                   their output to UART 2. The port must have been initialised
 901                   by the boot-loader before use.
 902
 903         config DEBUG_SA1100
 904                 depends on ARCH_SA1100
 905                 bool "Use SA1100 UARTs for low-level debug"
 906                 help
 907                   Say Y here if you want kernel low-level debugging support
 908                   on SA-11x0 UART ports. The kernel will check for the first
 909                   enabled UART in a sequence 3-1-2.
 910
 911         config DEBUG_SOCFPGA_UART
 912                 depends on ARCH_SOCFPGA
 913                 bool "Use SOCFPGA UART for low-level debug"
 914                 select DEBUG_UART_8250
 915                 help
 916                   Say Y here if you want kernel low-level debugging support
 917                   on SOCFPGA based platforms.
 918
 919         config DEBUG_SUN9I_UART0
 920                 bool "Kernel low-level debugging messages via sun9i UART0"
 921                 depends on MACH_SUN9I
 922                 select DEBUG_UART_8250
 923                 help
 924                   Say Y here if you want kernel low-level debugging support
 925                   on Allwinner A80 based platforms on the UART0.
 926
 927         config DEBUG_SUNXI_UART0
 928                 bool "Kernel low-level debugging messages via sunXi UART0"
 929                 depends on ARCH_SUNXI
 930                 select DEBUG_UART_8250
 931                 help
 932                   Say Y here if you want kernel low-level debugging support
 933                   on Allwinner A1X based platforms on the UART0.
 934
 935         config DEBUG_SUNXI_UART1
 936                 bool "Kernel low-level debugging messages via sunXi UART1"
 937                 depends on ARCH_SUNXI
 938                 select DEBUG_UART_8250
 939                 help
 940                   Say Y here if you want kernel low-level debugging support
 941                   on Allwinner A1X based platforms on the UART1.
 942
 943         config DEBUG_SUNXI_R_UART
 944                 bool "Kernel low-level debugging messages via sunXi R_UART"
 945                 depends on MACH_SUN6I || MACH_SUN8I
 946                 select DEBUG_UART_8250
 947                 help
 948                   Say Y here if you want kernel low-level debugging support
 949                   on Allwinner A31/A23 based platforms on the R_UART.
 950
 951         config TEGRA_DEBUG_UART_AUTO_ODMDATA
 952                 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"
 953                 depends on ARCH_TEGRA
 954                 select DEBUG_TEGRA_UART
 955                 help
 956                   Automatically determines which UART to use for low-level
 957                   debug based on the ODMDATA value. This value is part of
 958                   the BCT, and is written to the boot memory device using
 959                   nvflash, or other flashing tool.  When bits 19:18 are 3,
 960                   then bits 17:15 indicate which UART to use; 0/1/2/3/4
 961                   are UART A/B/C/D/E.
 962
 963         config TEGRA_DEBUG_UARTA
 964                 bool "Kernel low-level debugging messages via Tegra UART A"
 965                 depends on ARCH_TEGRA
 966                 select DEBUG_TEGRA_UART
 967                 help
 968                   Say Y here if you want kernel low-level debugging support
 969                   on Tegra based platforms.
 970
 971         config TEGRA_DEBUG_UARTB
 972                 bool "Kernel low-level debugging messages via Tegra UART B"
 973                 depends on ARCH_TEGRA
 974                 select DEBUG_TEGRA_UART
 975                 help
 976                   Say Y here if you want kernel low-level debugging support
 977                   on Tegra based platforms.
 978
 979         config TEGRA_DEBUG_UARTC
 980                 bool "Kernel low-level debugging messages via Tegra UART C"
 981                 depends on ARCH_TEGRA
 982                 select DEBUG_TEGRA_UART
 983                 help
 984                   Say Y here if you want kernel low-level debugging support
 985                   on Tegra based platforms.
 986
 987         config TEGRA_DEBUG_UARTD
 988                 bool "Kernel low-level debugging messages via Tegra UART D"
 989                 depends on ARCH_TEGRA
 990                 select DEBUG_TEGRA_UART
 991                 help
 992                   Say Y here if you want kernel low-level debugging support
 993                   on Tegra based platforms.
 994
 995         config TEGRA_DEBUG_UARTE
 996                 bool "Kernel low-level debugging messages via Tegra UART E"
 997                 depends on ARCH_TEGRA
 998                 select DEBUG_TEGRA_UART
 999                 help
1000                   Say Y here if you want kernel low-level debugging support
1001                   on Tegra based platforms.
1002
1003         config DEBUG_SIRFPRIMA2_UART1
1004                 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
1005                 depends on ARCH_PRIMA2
1006                 select DEBUG_SIRFSOC_UART
1007                 help
1008                   Say Y here if you want the debug print routines to direct
1009                   their output to the uart1 port on SiRFprimaII devices.
1010
1011         config DEBUG_SIRFATLAS7_UART0
1012                 bool "Kernel low-level debugging messages via SiRFatlas7 UART0"
1013                 depends on ARCH_ATLAS7
1014                 select DEBUG_SIRFSOC_UART
1015                 help
1016                   Say Y here if you want the debug print routines to direct
1017                   their output to the uart0 port on SiRFATLAS7 devices.The uart0
1018                   is used on SiRFATLAS7 as a extra debug port.sometimes an extra
1019                   debug port can be very useful.
1020
1021         config DEBUG_SIRFATLAS7_UART1
1022                 bool "Kernel low-level debugging messages via SiRFatlas7 UART1"
1023                 depends on ARCH_ATLAS7
1024                 select DEBUG_SIRFSOC_UART
1025                 help
1026                   Say Y here if you want the debug print routines to direct
1027                   their output to the uart1 port on SiRFATLAS7 devices.
1028
1029         config STIH41X_DEBUG_ASC2
1030                 bool "Use StiH415/416 ASC2 UART for low-level debug"
1031                 depends on ARCH_STI
1032                 select DEBUG_STI_UART
1033                 help
1034                   Say Y here if you want kernel low-level debugging support
1035                   on STiH415/416 based platforms like b2000, which has
1036                   default UART wired up to ASC2.
1037
1038                   If unsure, say N.
1039
1040         config STIH41X_DEBUG_SBC_ASC1
1041                 bool "Use StiH415/416 SBC ASC1 UART for low-level debug"
1042                 depends on ARCH_STI
1043                 select DEBUG_STI_UART
1044                 help
1045                   Say Y here if you want kernel low-level debugging support
1046                   on STiH415/416 based platforms like b2020. which has
1047                   default UART wired up to SBC ASC1.
1048
1049                   If unsure, say N.
1050
1051         config DEBUG_U300_UART
1052                 bool "Kernel low-level debugging messages via U300 UART0"
1053                 depends on ARCH_U300
1054                 select DEBUG_UART_PL01X
1055                 help
1056                   Say Y here if you want the debug print routines to direct
1057                   their output to the uart port on U300 devices.
1058
1059         config DEBUG_UX500_UART
1060                 depends on ARCH_U8500
1061                 bool "Use Ux500 UART for low-level debug"
1062                 help
1063                   Say Y here if you want kernel low-level debugging support
1064                   on Ux500 based platforms.
1065
1066         config DEBUG_MT6589_UART0
1067                 bool "Mediatek mt6589 UART0"
1068                 depends on ARCH_MEDIATEK
1069                 select DEBUG_UART_8250
1070                 help
1071                   Say Y here if you want kernel low-level debugging support
1072                   for Mediatek mt6589 based platforms on UART0.
1073
1074         config DEBUG_MT8127_UART0
1075                 bool "Mediatek mt8127/mt6592 UART0"
1076                 depends on ARCH_MEDIATEK
1077                 select DEBUG_UART_8250
1078                 help
1079                   Say Y here if you want kernel low-level debugging support
1080                   for Mediatek mt8127 based platforms on UART0.
1081
1082         config DEBUG_MT8135_UART3
1083                 bool "Mediatek mt8135 UART3"
1084                 depends on ARCH_MEDIATEK
1085                 select DEBUG_UART_8250
1086                 help
1087                   Say Y here if you want kernel low-level debugging support
1088                   for Mediatek mt8135 based platforms on UART3.
1089
1090         config DEBUG_VEXPRESS_UART0_DETECT
1091                 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
1092                 depends on ARCH_VEXPRESS && CPU_CP15_MMU
1093                 help
1094                   This option enables a simple heuristic which tries to determine
1095                   the motherboard's memory map variant (original or RS1) and then
1096                   choose the relevant UART0 base address.
1097
1098                   Note that this will only work with standard A-class core tiles,
1099                   and may fail with non-standard SMM or custom software models.
1100
1101         config DEBUG_VEXPRESS_UART0_CA9
1102                 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
1103                 depends on ARCH_VEXPRESS
1104                 select DEBUG_UART_PL01X
1105                 help
1106                   This option selects UART0 at 0x10009000. Except for custom models,
1107                   this applies only to the V2P-CA9 tile.
1108
1109         config DEBUG_VEXPRESS_UART0_RS1
1110                 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
1111                 depends on ARCH_VEXPRESS
1112                 select DEBUG_UART_PL01X
1113                 help
1114                   This option selects UART0 at 0x1c090000. This applies to most
1115                   of the tiles using the RS1 memory map, including all new A-class
1116                   core tiles, FPGA-based SMMs and software models.
1117
1118         config DEBUG_VEXPRESS_UART0_CRX
1119                 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)"
1120                 depends on ARCH_VEXPRESS && !MMU
1121                 select DEBUG_UART_PL01X
1122                 help
1123                   This option selects UART0 at 0xb0090000. This is appropriate for
1124                   Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7
1125
1126         config DEBUG_VT8500_UART0
1127                 bool "Use UART0 on VIA/Wondermedia SoCs"
1128                 depends on ARCH_VT8500
1129                 help
1130                   This option selects UART0 on VIA/Wondermedia System-on-a-chip
1131                   devices, including VT8500, WM8505, WM8650 and WM8850.
1132
1133         config DEBUG_ICEDCC
1134                 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
1135                 help
1136                   Say Y here if you want the debug print routines to direct
1137                   their output to the EmbeddedICE macrocell's DCC channel using
1138                   co-processor 14. This is known to work on the ARM9 style ICE
1139                   channel and on the XScale with the PEEDI.
1140
1141                   Note that the system will appear to hang during boot if there
1142                   is nothing connected to read from the DCC.
1143
1144         config DEBUG_SEMIHOSTING
1145                 bool "Kernel low-level debug output via semihosting I/O"
1146                 help
1147                   Semihosting enables code running on an ARM target to use
1148                   the I/O facilities on a host debugger/emulator through a
1149                   simple SVC call. The host debugger or emulator must have
1150                   semihosting enabled for the special svc call to be trapped
1151                   otherwise the kernel will crash.
1152
1153                   This is known to work with OpenOCD, as well as
1154                   ARM's Fast Models, or any other controlling environment
1155                   that implements semihosting.
1156
1157                   For more details about semihosting, please see
1158                   chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
1159
1160         config DEBUG_LL_UART_8250
1161                 bool "Kernel low-level debugging via 8250 UART"
1162                 help
1163                   Say Y here if you wish the debug print routes to direct
1164                   their output to an 8250 UART.  You can use this option
1165                   to provide the parameters for the 8250 UART rather than
1166                   selecting one of the platform specific options above if
1167                   you know the parameters for the port.
1168
1169                   This option is preferred over the platform specific
1170                   options; the platform specific options are deprecated
1171                   and will be soon removed.
1172
1173         config DEBUG_LL_UART_EFM32
1174                 bool "Kernel low-level debugging via efm32 UART"
1175                 depends on ARCH_EFM32
1176                 help
1177                   Say Y here if you want the debug print routines to direct
1178                   their output to an UART or USART port on efm32 based
1179                   machines. Use the following addresses for DEBUG_UART_PHYS:
1180
1181                     0x4000c000 | USART0
1182                     0x4000c400 | USART1
1183                     0x4000c800 | USART2
1184                     0x4000e000 | UART0
1185                     0x4000e400 | UART1
1186
1187         config DEBUG_LL_UART_PL01X
1188                 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
1189                 help
1190                   Say Y here if you wish the debug print routes to direct
1191                   their output to a PL01x Primecell UART.  You can use
1192                   this option to provide the parameters for the UART
1193                   rather than selecting one of the platform specific
1194                   options above if you know the parameters for the port.
1195
1196                   This option is preferred over the platform specific
1197                   options; the platform specific options are deprecated
1198                   and will be soon removed.
1199
1200 endchoice
1201
1202 config DEBUG_AT91_UART
1203         bool
1204         depends on ARCH_AT91
1205
1206 config DEBUG_EXYNOS_UART
1207         bool
1208
1209 config DEBUG_S3C2410_UART
1210         bool
1211         select DEBUG_S3C24XX_UART
1212
1213 config DEBUG_S3C24XX_UART
1214         bool
1215
1216 config DEBUG_S5PV210_UART
1217         bool
1218
1219 config DEBUG_OMAP2PLUS_UART
1220         bool
1221         depends on ARCH_OMAP2PLUS
1222
1223 config DEBUG_IMX_UART_PORT
1224         int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
1225                                                 DEBUG_IMX25_UART || \
1226                                                 DEBUG_IMX21_IMX27_UART || \
1227                                                 DEBUG_IMX31_UART || \
1228                                                 DEBUG_IMX35_UART || \
1229                                                 DEBUG_IMX50_UART || \
1230                                                 DEBUG_IMX51_UART || \
1231                                                 DEBUG_IMX53_UART || \
1232                                                 DEBUG_IMX6Q_UART || \
1233                                                 DEBUG_IMX6SL_UART || \
1234                                                 DEBUG_IMX6SX_UART
1235         default 1
1236         depends on ARCH_MXC
1237         help
1238           Choose UART port on which kernel low-level debug messages
1239           should be output.
1240
1241 config DEBUG_VF_UART_PORT
1242         int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
1243         default 1
1244         range 0 3
1245         depends on SOC_VF610
1246         help
1247           Choose UART port on which kernel low-level debug messages
1248           should be output.
1249
1250 config DEBUG_TEGRA_UART
1251         bool
1252         depends on ARCH_TEGRA
1253
1254 config DEBUG_STI_UART
1255         bool
1256         depends on ARCH_STI
1257
1258 config DEBUG_SIRFSOC_UART
1259         bool
1260         depends on ARCH_SIRF
1261
1262 config DEBUG_LL_INCLUDE
1263         string
1264         default "debug/sa1100.S" if DEBUG_SA1100
1265         default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
1266         default "debug/at91.S" if DEBUG_AT91_UART
1267         default "debug/asm9260.S" if DEBUG_ASM9260_UART
1268         default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
1269         default "debug/meson.S" if DEBUG_MESON_UARTAO
1270         default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
1271         default "debug/exynos.S" if DEBUG_EXYNOS_UART
1272         default "debug/efm32.S" if DEBUG_LL_UART_EFM32
1273         default "debug/icedcc.S" if DEBUG_ICEDCC
1274         default "debug/imx.S" if DEBUG_IMX1_UART || \
1275                                  DEBUG_IMX25_UART || \
1276                                  DEBUG_IMX21_IMX27_UART || \
1277                                  DEBUG_IMX31_UART || \
1278                                  DEBUG_IMX35_UART || \
1279                                  DEBUG_IMX50_UART || \
1280                                  DEBUG_IMX51_UART || \
1281                                  DEBUG_IMX53_UART ||\
1282                                  DEBUG_IMX6Q_UART || \
1283                                  DEBUG_IMX6SL_UART || \
1284                                  DEBUG_IMX6SX_UART
1285         default "debug/ks8695.S" if DEBUG_KS8695_UART
1286         default "debug/msm.S" if DEBUG_QCOM_UARTDM
1287         default "debug/netx.S" if DEBUG_NETX_UART
1288         default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
1289         default "debug/renesas-scif.S" if DEBUG_R7S72100_SCIF2
1290         default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF0
1291         default "debug/renesas-scif.S" if DEBUG_RCAR_GEN1_SCIF2
1292         default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF0
1293         default "debug/renesas-scif.S" if DEBUG_RCAR_GEN2_SCIF2
1294         default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA0
1295         default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA1
1296         default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
1297         default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART
1298         default "debug/s5pv210.S" if DEBUG_S5PV210_UART
1299         default "debug/sirf.S" if DEBUG_SIRFSOC_UART
1300         default "debug/sti.S" if DEBUG_STI_UART
1301         default "debug/tegra.S" if DEBUG_TEGRA_UART
1302         default "debug/ux500.S" if DEBUG_UX500_UART
1303         default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
1304         default "debug/vf.S" if DEBUG_VF_UART
1305         default "debug/vt8500.S" if DEBUG_VT8500_UART0
1306         default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
1307         default "debug/bcm63xx.S" if DEBUG_UART_BCM63XX
1308         default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0
1309         default "mach/debug-macro.S"
1310
1311 # Compatibility options for PL01x
1312 config DEBUG_UART_PL01X
1313         bool
1314
1315 # Compatibility options for 8250
1316 config DEBUG_UART_8250
1317         def_bool ARCH_DOVE || ARCH_EBSA110 || \
1318                 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
1319                 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \
1320                 ARCH_IOP33X || ARCH_IXP4XX || \
1321                 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC
1322
1323 # Compatibility options for BCM63xx
1324 config DEBUG_UART_BCM63XX
1325         def_bool ARCH_BCM_63XX
1326
1327 config DEBUG_UART_PHYS
1328         hex "Physical base address of debug UART"
1329         default 0x00100a00 if DEBUG_NETX_UART
1330         default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0
1331         default 0x01c28000 if DEBUG_SUNXI_UART0
1332         default 0x01c28400 if DEBUG_SUNXI_UART1
1333         default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1
1334         default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2
1335         default 0x01f02800 if DEBUG_SUNXI_R_UART
1336         default 0x02530c00 if DEBUG_KEYSTONE_UART0
1337         default 0x02531000 if DEBUG_KEYSTONE_UART1
1338         default 0x03010fe0 if ARCH_RPC
1339         default 0x07000000 if DEBUG_SUN9I_UART0
1340         default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
1341                                 DEBUG_VEXPRESS_UART0_CA9
1342         default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
1343         default 0x10124000 if DEBUG_RK3X_UART0
1344         default 0x10126000 if DEBUG_RK3X_UART1
1345         default 0x101f1000 if ARCH_VERSATILE
1346         default 0x101fb000 if DEBUG_NOMADIK_UART
1347         default 0x11002000 if DEBUG_MT8127_UART0
1348         default 0x11006000 if DEBUG_MT6589_UART0
1349         default 0x11009000 if DEBUG_MT8135_UART3
1350         default 0x16000000 if ARCH_INTEGRATOR
1351         default 0x18000300 if DEBUG_BCM_5301X
1352         default 0x18010000 if DEBUG_SIRFATLAS7_UART0
1353         default 0x18020000 if DEBUG_SIRFATLAS7_UART1
1354         default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
1355         default 0x20001000 if DEBUG_HIP01_UART
1356         default 0x20060000 if DEBUG_RK29_UART0
1357         default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1358         default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1359         default 0x20201000 if DEBUG_BCM2835
1360         default 0x3e000000 if DEBUG_BCM_KONA_UART
1361         default 0x4000e400 if DEBUG_LL_UART_EFM32
1362         default 0x40090000 if ARCH_LPC32XX
1363         default 0x40100000 if DEBUG_PXA_UART1
1364         default 0x42000000 if ARCH_GEMINI
1365         default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1366                                 DEBUG_S3C2410_UART0)
1367         default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1368                                 DEBUG_S3C2410_UART1)
1369         default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1370                                 DEBUG_S3C2410_UART2)
1371         default 0x78000000 if DEBUG_CNS3XXX
1372         default 0x7c0003f8 if FOOTBRIDGE
1373         default 0x80010000 if DEBUG_ASM9260_UART
1374         default 0x80070000 if DEBUG_IMX23_UART
1375         default 0x80074000 if DEBUG_IMX28_UART
1376         default 0x80230000 if DEBUG_PICOXCELL_UART
1377         default 0x808c0000 if ARCH_EP93XX
1378         default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1379         default 0xb0060000 if DEBUG_SIRFPRIMA2_UART1
1380         default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
1381         default 0xc0013000 if DEBUG_U300_UART
1382         default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1383         default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1384         default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1385         default 0xd0012000 if DEBUG_MVEBU_UART0
1386         default 0xc81004c0 if DEBUG_MESON_UARTAO
1387         default 0xd4017000 if DEBUG_MMP_UART2
1388         default 0xd4018000 if DEBUG_MMP_UART3
1389         default 0xe0000000 if ARCH_SPEAR13XX
1390         default 0xe4007000 if DEBUG_HIP04_UART
1391         default 0xe6c40000 if DEBUG_RMOBILE_SCIFA0
1392         default 0xe6c50000 if DEBUG_RMOBILE_SCIFA1
1393         default 0xe6c80000 if DEBUG_RMOBILE_SCIFA4
1394         default 0xe6e58000 if DEBUG_RCAR_GEN2_SCIF2
1395         default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
1396         default 0xe8008000 if DEBUG_R7S72100_SCIF2
1397         default 0xf0000be0 if ARCH_EBSA110
1398         default 0xf040ab00 if DEBUG_BRCMSTB_UART
1399         default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
1400         default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
1401         default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
1402                                 ARCH_ORION5X
1403         default 0xf7fc9000 if DEBUG_BERLIN_UART
1404         default 0xf8b00000 if DEBUG_HIX5HD2_UART
1405         default 0xf991e000 if DEBUG_QCOM_UARTDM
1406         default 0xfcb00000 if DEBUG_HI3620_UART
1407         default 0xfd883000 if DEBUG_ALPINE_UART0
1408         default 0xfe800000 if ARCH_IOP32X
1409         default 0xff690000 if DEBUG_RK32_UART2
1410         default 0xffc02000 if DEBUG_SOCFPGA_UART
1411         default 0xffd82340 if ARCH_IOP13XX
1412         default 0xffe40000 if DEBUG_RCAR_GEN1_SCIF0
1413         default 0xffe42000 if DEBUG_RCAR_GEN1_SCIF2
1414         default 0xfff36000 if DEBUG_HIGHBANK_UART
1415         default 0xfffb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
1416         default 0xfffb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
1417         default 0xfffb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
1418         default 0xfffe8600 if DEBUG_UART_BCM63XX
1419         default 0xfffff700 if ARCH_IOP33X
1420         depends on ARCH_EP93XX || \
1421                 DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1422                 DEBUG_LL_UART_EFM32 || \
1423                 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1424                 DEBUG_NETX_UART || \
1425                 DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
1426                 DEBUG_RCAR_GEN1_SCIF0 || DEBUG_RCAR_GEN1_SCIF2 || \
1427                 DEBUG_RCAR_GEN2_SCIF0 || DEBUG_RCAR_GEN2_SCIF2 || \
1428                 DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
1429                 DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
1430                 DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
1431                 DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0
1432
1433 config DEBUG_UART_VIRT
1434         hex "Virtual base address of debug UART"
1435         default 0xe0000a00 if DEBUG_NETX_UART
1436         default 0xe0010fe0 if ARCH_RPC
1437         default 0xf0000be0 if ARCH_EBSA110
1438         default 0xf0010000 if DEBUG_ASM9260_UART
1439         default 0xf01fb000 if DEBUG_NOMADIK_UART
1440         default 0xf0201000 if DEBUG_BCM2835
1441         default 0xf1000300 if DEBUG_BCM_5301X
1442         default 0xf1002000 if DEBUG_MT8127_UART0
1443         default 0xf1006000 if DEBUG_MT6589_UART0
1444         default 0xf1009000 if DEBUG_MT8135_UART3
1445         default 0xf11f1000 if ARCH_VERSATILE
1446         default 0xf1600000 if ARCH_INTEGRATOR
1447         default 0xf1c28000 if DEBUG_SUNXI_UART0
1448         default 0xf1c28400 if DEBUG_SUNXI_UART1
1449         default 0xf1f02800 if DEBUG_SUNXI_R_UART
1450         default 0xf6200000 if DEBUG_PXA_UART1
1451         default 0xf4090000 if ARCH_LPC32XX
1452         default 0xf4200000 if ARCH_GEMINI
1453         default 0xf7000000 if DEBUG_SUN9I_UART0
1454         default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \
1455                                 DEBUG_S3C2410_UART0)
1456         default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \
1457                                 DEBUG_S3C2410_UART1)
1458         default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \
1459                                 DEBUG_S3C2410_UART2)
1460         default 0xf7fc9000 if DEBUG_BERLIN_UART
1461         default 0xf8007000 if DEBUG_HIP04_UART
1462         default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9
1463         default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1
1464         default 0xfa71e000 if DEBUG_QCOM_UARTDM
1465         default 0xfb002000 if DEBUG_CNS3XXX
1466         default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
1467         default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
1468         default 0xfc40ab00 if DEBUG_BRCMSTB_UART
1469         default 0xfcfe8600 if DEBUG_UART_BCM63XX
1470         default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX
1471         default 0xfd000000 if ARCH_SPEAR13XX
1472         default 0xfd012000 if ARCH_MV78XX0
1473         default 0xfd883000 if DEBUG_ALPINE_UART0
1474         default 0xfde12000 if ARCH_DOVE
1475         default 0xfe012000 if ARCH_ORION5X
1476         default 0xf31004c0 if DEBUG_MESON_UARTAO
1477         default 0xfe017000 if DEBUG_MMP_UART2
1478         default 0xfe018000 if DEBUG_MMP_UART3
1479         default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
1480         default 0xfe230000 if DEBUG_PICOXCELL_UART
1481         default 0xfe300000 if DEBUG_BCM_KONA_UART
1482         default 0xfe800000 if ARCH_IOP32X
1483         default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HIX5HD2_UART
1484         default 0xfeb24000 if DEBUG_RK3X_UART0
1485         default 0xfeb26000 if DEBUG_RK3X_UART1
1486         default 0xfeb30c00 if DEBUG_KEYSTONE_UART0
1487         default 0xfeb31000 if DEBUG_KEYSTONE_UART1
1488         default 0xfec02000 if DEBUG_SOCFPGA_UART
1489         default 0xfec12000 if DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE
1490         default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
1491         default 0xfec10000 if DEBUG_SIRFATLAS7_UART0
1492         default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
1493         default 0xfec20000 if DEBUG_SIRFATLAS7_UART1
1494         default 0xfec60000 if DEBUG_SIRFPRIMA2_UART1
1495         default 0xfec90000 if DEBUG_RK32_UART2
1496         default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
1497         default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2
1498         default 0xfed60000 if DEBUG_RK29_UART0
1499         default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
1500         default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
1501         default 0xfedc0000 if ARCH_EP93XX
1502         default 0xfee003f8 if FOOTBRIDGE
1503         default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
1504         default 0xfee82340 if ARCH_IOP13XX
1505         default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
1506         default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
1507         default 0xfef36000 if DEBUG_HIGHBANK_UART
1508         default 0xfefb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
1509         default 0xfefb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
1510         default 0xfefb9800 if DEBUG_OMAP1UART3 || DEBUG_OMAP7XXUART3
1511         default 0xfefff700 if ARCH_IOP33X
1512         default 0xff003000 if DEBUG_U300_UART
1513         default 0xffd01000 if DEBUG_HIP01_UART
1514         default DEBUG_UART_PHYS if !MMU
1515         depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
1516                 DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
1517                 DEBUG_NETX_UART || \
1518                 DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
1519                 DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
1520                 DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0
1521
1522 config DEBUG_UART_8250_SHIFT
1523         int "Register offset shift for the 8250 debug UART"
1524         depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1525         default 0 if FOOTBRIDGE || ARCH_IOP32X || DEBUG_BCM_5301X || \
1526                 DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || DEBUG_OMAP7XXUART3
1527         default 2
1528
1529 config DEBUG_UART_8250_WORD
1530         bool "Use 32-bit accesses for 8250 UART"
1531         depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1532         depends on DEBUG_UART_8250_SHIFT >= 2
1533         default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
1534                 ARCH_KEYSTONE || DEBUG_ALPINE_UART0 || \
1535                 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
1536                 DEBUG_DAVINCI_DA8XX_UART2 || \
1537                 DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \
1538                 DEBUG_BRCMSTB_UART
1539
1540 config DEBUG_UART_8250_FLOW_CONTROL
1541         bool "Enable flow control for 8250 UART"
1542         depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
1543         default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
1544
1545 config DEBUG_UNCOMPRESS
1546         bool
1547         depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG
1548         default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
1549                      (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
1550         help
1551           This option influences the normal decompressor output for
1552           multiplatform kernels.  Normally, multiplatform kernels disable
1553           decompressor output because it is not possible to know where to
1554           send the decompressor output.
1555
1556           When this option is set, the selected DEBUG_LL output method
1557           will be re-used for normal decompressor output on multiplatform
1558           kernels.
1559
1560
1561 config UNCOMPRESS_INCLUDE
1562         string
1563         default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
1564                                         PLAT_SAMSUNG || ARCH_EFM32 || \
1565                                         ARCH_SHMOBILE_LEGACY
1566         default "mach/uncompress.h"
1567
1568 config EARLY_PRINTK
1569         bool "Early printk"
1570         depends on DEBUG_LL
1571         help
1572           Say Y here if you want to have an early console using the
1573           kernel low-level debugging functions. Add earlyprintk to your
1574           kernel parameters to enable this console.
1575
1576 config ARM_KPROBES_TEST
1577         tristate "Kprobes test module"
1578         depends on KPROBES && MODULES
1579         help
1580           Perform tests of kprobes API and instruction set simulation.
1581
1582 config PID_IN_CONTEXTIDR
1583         bool "Write the current PID to the CONTEXTIDR register"
1584         depends on CPU_COPY_V6
1585         help
1586           Enabling this option causes the kernel to write the current PID to
1587           the PROCID field of the CONTEXTIDR register, at the expense of some
1588           additional instructions during context switch. Say Y here only if you
1589           are planning to use hardware trace tools with this kernel.
1590
1591 config DEBUG_SET_MODULE_RONX
1592         bool "Set loadable kernel module data as NX and text as RO"
1593         depends on MODULES
1594         ---help---
1595           This option helps catch unintended modifications to loadable
1596           kernel module's text and read-only data. It also prevents execution
1597           of module data. Such protection may interfere with run-time code
1598           patching and dynamic kernel tracing - and they might also protect
1599           against certain classes of kernel exploits.
1600           If in doubt, say "N".
1601
1602 source "drivers/hwtracing/coresight/Kconfig"
1603
1604 endmenu