arch/arm/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 source "lib/Kconfig.debug"
   4
   5 config STRICT_DEVMEM
   6         bool "Filter access to /dev/mem"
   7         depends on MMU
   8         ---help---
   9           If this option is disabled, you allow userspace (root) access to all
  10           of memory, including kernel and userspace memory. Accidental
  11           access to this is obviously disastrous, but specific access can
  12           be used by people debugging the kernel.
  13
  14           If this option is switched on, the /dev/mem file only allows
  15           userspace access to memory mapped peripherals.
  16
  17           If in doubt, say Y.
  18
  19 # RMK wants arm kernels compiled with frame pointers or stack unwinding.
  20 # If you know what you are doing and are willing to live without stack
  21 # traces, you can get a slightly smaller kernel by setting this option to
  22 # n, but then RMK will have to kill you ;).
  23 config FRAME_POINTER
  24         bool
  25         depends on !THUMB2_KERNEL
  26         default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
  27         help
  28           If you say N here, the resulting kernel will be slightly smaller and
  29           faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
  30           when a problem occurs with the kernel, the information that is
  31           reported is severely limited.
  32
  33 config ARM_UNWIND
  34         bool "Enable stack unwinding support (EXPERIMENTAL)"
  35         depends on AEABI
  36         default y
  37         help
  38           This option enables stack unwinding support in the kernel
  39           using the information automatically generated by the
  40           compiler. The resulting kernel image is slightly bigger but
  41           the performance is not affected. Currently, this feature
  42           only works with EABI compilers. If unsure say Y.
  43
  44 config OLD_MCOUNT
  45         bool
  46         depends on FUNCTION_TRACER && FRAME_POINTER
  47         default y
  48
  49 config DEBUG_USER
  50         bool "Verbose user fault messages"
  51         help
  52           When a user program crashes due to an exception, the kernel can
  53           print a brief message explaining what the problem was. This is
  54           sometimes helpful for debugging but serves no purpose on a
  55           production system. Most people should say N here.
  56
  57           In addition, you need to pass user_debug=N on the kernel command
  58           line to enable this feature.  N consists of the sum of:
  59
  60               1 - undefined instruction events
  61               2 - system calls
  62               4 - invalid data aborts
  63               8 - SIGSEGV faults
  64              16 - SIGBUS faults
  65
  66 config DEBUG_RODATA
  67         bool "Write protect kernel text section"
  68         default n
  69         depends on DEBUG_KERNEL && MMU
  70         ---help---
  71           Mark the kernel text section as write-protected in the pagetables,
  72           in order to catch accidental (and incorrect) writes to such const
  73           data. This will cause the size of the kernel, plus up to 4MB, to
  74           be mapped as pages instead of sections, which will increase TLB
  75           pressure.
  76           If in doubt, say "N".
  77
  78 config DEBUG_RODATA_TEST
  79         bool "Testcase for the DEBUG_RODATA feature"
  80         depends on DEBUG_RODATA
  81         default n
  82         ---help---
  83           This option enables a testcase for the DEBUG_RODATA
  84           feature.
  85           If in doubt, say "N"
  86
  87 # These options are only for real kernel hackers who want to get their hands dirty.
  88 config DEBUG_LL
  89         bool "Kernel low-level debugging functions (read help!)"
  90         depends on DEBUG_KERNEL
  91         help
  92           Say Y here to include definitions of printascii, printch, printhex
  93           in the kernel.  This is helpful if you are debugging code that
  94           executes before the console is initialized.
  95
  96           Note that selecting this option will limit the kernel to a single
  97           UART definition, as specified below. Attempting to boot the kernel
  98           image on a different platform *will not work*, so this option should
  99           not be enabled for kernels that are intended to be portable.
 100
 101 choice
 102         prompt "Kernel low-level debugging port"
 103         depends on DEBUG_LL
 104
 105         config AT91_DEBUG_LL_DBGU0
 106                 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
 107                 depends on HAVE_AT91_DBGU0
 108
 109         config AT91_DEBUG_LL_DBGU1
 110                 bool "Kernel low-level debugging on 9263 and 9g45"
 111                 depends on HAVE_AT91_DBGU1
 112
 113         config DEBUG_BCM2835
 114                 bool "Kernel low-level debugging on BCM2835 PL011 UART"
 115                 depends on ARCH_BCM2835
 116
 117         config DEBUG_CLPS711X_UART1
 118                 bool "Kernel low-level debugging messages via UART1"
 119                 depends on ARCH_CLPS711X
 120                 help
 121                   Say Y here if you want the debug print routines to direct
 122                   their output to the first serial port on these devices.
 123
 124         config DEBUG_CLPS711X_UART2
 125                 bool "Kernel low-level debugging messages via UART2"
 126                 depends on ARCH_CLPS711X
 127                 help
 128                   Say Y here if you want the debug print routines to direct
 129                   their output to the second serial port on these devices.
 130
 131         config DEBUG_CNS3XXX
 132                 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx"
 133                 depends on ARCH_CNS3XXX
 134                 help
 135                   Say Y here if you want the debug print routines to direct
 136                   their output to the CNS3xxx UART0.
 137
 138         config DEBUG_DAVINCI_DA8XX_UART1
 139                 bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
 140                 depends on ARCH_DAVINCI_DA8XX
 141                 help
 142                   Say Y here if you want the debug print routines to direct
 143                   their output to UART1 serial port on DaVinci DA8XX devices.
 144
 145         config DEBUG_DAVINCI_DA8XX_UART2
 146                 bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
 147                 depends on ARCH_DAVINCI_DA8XX
 148                 help
 149                   Say Y here if you want the debug print routines to direct
 150                   their output to UART2 serial port on DaVinci DA8XX devices.
 151
 152         config DEBUG_DAVINCI_DMx_UART0
 153                 bool "Kernel low-level debugging on DaVinci DMx using UART0"
 154                 depends on ARCH_DAVINCI_DMx
 155                 help
 156                   Say Y here if you want the debug print routines to direct
 157                   their output to UART0 serial port on DaVinci DMx devices.
 158
 159         config DEBUG_DAVINCI_TNETV107X_UART1
 160                 bool "Kernel low-level debugging on DaVinci TNETV107x using UART1"
 161                 depends on ARCH_DAVINCI_TNETV107X
 162                 help
 163                   Say Y here if you want the debug print routines to direct
 164                   their output to UART1 serial port on DaVinci TNETV107X
 165                   devices.
 166
 167         config DEBUG_ZYNQ_UART0
 168                 bool "Kernel low-level debugging on Xilinx Zynq using UART0"
 169                 depends on ARCH_ZYNQ
 170                 help
 171                   Say Y here if you want the debug print routines to direct
 172                   their output to UART0 on the Zynq platform.
 173
 174         config DEBUG_ZYNQ_UART1
 175                 bool "Kernel low-level debugging on Xilinx Zynq using UART1"
 176                 depends on ARCH_ZYNQ
 177                 help
 178                   Say Y here if you want the debug print routines to direct
 179                   their output to UART1 on the Zynq platform.
 180
 181                   If you have a ZC702 board and want early boot messages to
 182                   appear on the USB serial adaptor, select this option.
 183
 184         config DEBUG_DC21285_PORT
 185                 bool "Kernel low-level debugging messages via footbridge serial port"
 186                 depends on FOOTBRIDGE
 187                 help
 188                   Say Y here if you want the debug print routines to direct
 189                   their output to the serial port in the DC21285 (Footbridge).
 190
 191         config DEBUG_FOOTBRIDGE_COM1
 192                 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
 193                 depends on FOOTBRIDGE
 194                 help
 195                   Say Y here if you want the debug print routines to direct
 196                   their output to the 8250 at PCI COM1.
 197
 198         config DEBUG_HIGHBANK_UART
 199                 bool "Kernel low-level debugging messages via Highbank UART"
 200                 depends on ARCH_HIGHBANK
 201                 help
 202                   Say Y here if you want the debug print routines to direct
 203                   their output to the UART on Highbank based devices.
 204
 205         config DEBUG_IMX1_UART
 206                 bool "i.MX1 Debug UART"
 207                 depends on SOC_IMX1
 208                 help
 209                   Say Y here if you want kernel low-level debugging support
 210                   on i.MX1.
 211
 212         config DEBUG_IMX23_UART
 213                 bool "i.MX23 Debug UART"
 214                 depends on SOC_IMX23
 215                 help
 216                   Say Y here if you want kernel low-level debugging support
 217                   on i.MX23.
 218
 219         config DEBUG_IMX25_UART
 220                 bool "i.MX25 Debug UART"
 221                 depends on SOC_IMX25
 222                 help
 223                   Say Y here if you want kernel low-level debugging support
 224                   on i.MX25.
 225
 226         config DEBUG_IMX21_IMX27_UART
 227                 bool "i.MX21 and i.MX27 Debug UART"
 228                 depends on SOC_IMX21 || SOC_IMX27
 229                 help
 230                   Say Y here if you want kernel low-level debugging support
 231                   on i.MX21 or i.MX27.
 232
 233         config DEBUG_IMX28_UART
 234                 bool "i.MX28 Debug UART"
 235                 depends on SOC_IMX28
 236                 help
 237                   Say Y here if you want kernel low-level debugging support
 238                   on i.MX28.
 239
 240         config DEBUG_IMX31_UART
 241                 bool "i.MX31 Debug UART"
 242                 depends on SOC_IMX31
 243                 help
 244                   Say Y here if you want kernel low-level debugging support
 245                   on i.MX31.
 246
 247         config DEBUG_IMX35_UART
 248                 bool "i.MX35 Debug UART"
 249                 depends on SOC_IMX35
 250                 help
 251                   Say Y here if you want kernel low-level debugging support
 252                   on i.MX35.
 253
 254         config DEBUG_IMX51_UART
 255                 bool "i.MX51 Debug UART"
 256                 depends on SOC_IMX51
 257                 help
 258                   Say Y here if you want kernel low-level debugging support
 259                   on i.MX51.
 260
 261         config DEBUG_IMX53_UART
 262                 bool "i.MX53 Debug UART"
 263                 depends on SOC_IMX53
 264                 help
 265                   Say Y here if you want kernel low-level debugging support
 266                   on i.MX53.
 267
 268         config DEBUG_IMX6Q_UART
 269                 bool "i.MX6Q/DL Debug UART"
 270                 depends on SOC_IMX6Q
 271                 help
 272                   Say Y here if you want kernel low-level debugging support
 273                   on i.MX6Q/DL.
 274
 275         config DEBUG_MMP_UART2
 276                 bool "Kernel low-level debugging message via MMP UART2"
 277                 depends on ARCH_MMP
 278                 help
 279                   Say Y here if you want kernel low-level debugging support
 280                   on MMP UART2.
 281
 282         config DEBUG_MMP_UART3
 283                 bool "Kernel low-level debugging message via MMP UART3"
 284                 depends on ARCH_MMP
 285                 help
 286                   Say Y here if you want kernel low-level debugging support
 287                   on MMP UART3.
 288
 289         config DEBUG_MSM_UART1
 290                 bool "Kernel low-level debugging messages via MSM UART1"
 291                 depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
 292                 help
 293                   Say Y here if you want the debug print routines to direct
 294                   their output to the first serial port on MSM devices.
 295
 296         config DEBUG_MSM_UART2
 297                 bool "Kernel low-level debugging messages via MSM UART2"
 298                 depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
 299                 help
 300                   Say Y here if you want the debug print routines to direct
 301                   their output to the second serial port on MSM devices.
 302
 303         config DEBUG_MSM_UART3
 304                 bool "Kernel low-level debugging messages via MSM UART3"
 305                 depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
 306                 help
 307                   Say Y here if you want the debug print routines to direct
 308                   their output to the third serial port on MSM devices.
 309
 310         config DEBUG_MSM8660_UART
 311                 bool "Kernel low-level debugging messages via MSM 8660 UART"
 312                 depends on ARCH_MSM8X60
 313                 select MSM_HAS_DEBUG_UART_HS
 314                 help
 315                   Say Y here if you want the debug print routines to direct
 316                   their output to the serial port on MSM 8660 devices.
 317
 318         config DEBUG_MSM8960_UART
 319                 bool "Kernel low-level debugging messages via MSM 8960 UART"
 320                 depends on ARCH_MSM8960
 321                 select MSM_HAS_DEBUG_UART_HS
 322                 help
 323                   Say Y here if you want the debug print routines to direct
 324                   their output to the serial port on MSM 8960 devices.
 325
 326         config DEBUG_MVEBU_UART
 327                 bool "Kernel low-level debugging messages via MVEBU UART"
 328                 depends on ARCH_MVEBU
 329                 help
 330                   Say Y here if you want kernel low-level debugging support
 331                   on MVEBU based platforms.
 332
 333         config DEBUG_NOMADIK_UART
 334                 bool "Kernel low-level debugging messages via NOMADIK UART"
 335                 depends on ARCH_NOMADIK
 336                 help
 337                   Say Y here if you want kernel low-level debugging support
 338                   on NOMADIK based platforms.
 339
 340         config DEBUG_OMAP2PLUS_UART
 341                 bool "Kernel low-level debugging messages via OMAP2PLUS UART"
 342                 depends on ARCH_OMAP2PLUS
 343                 help
 344                   Say Y here if you want kernel low-level debugging support
 345                   on OMAP2PLUS based platforms.
 346
 347         config DEBUG_PICOXCELL_UART
 348                 depends on ARCH_PICOXCELL
 349                 bool "Use PicoXcell UART for low-level debug"
 350                 help
 351                   Say Y here if you want kernel low-level debugging support
 352                   on PicoXcell based platforms.
 353
 354         config DEBUG_PXA_UART1
 355                 depends on ARCH_PXA
 356                 bool "Use PXA UART1 for low-level debug"
 357                 help
 358                   Say Y here if you want kernel low-level debugging support
 359                   on PXA UART1.
 360
 361         config DEBUG_REALVIEW_STD_PORT
 362                 bool "RealView Default UART"
 363                 depends on ARCH_REALVIEW
 364                 help
 365                   Say Y here if you want the debug print routines to direct
 366                   their output to the serial port on RealView EB, PB11MP, PBA8
 367                   and PBX platforms.
 368
 369         config DEBUG_REALVIEW_PB1176_PORT
 370                 bool "RealView PB1176 UART"
 371                 depends on MACH_REALVIEW_PB1176
 372                 help
 373                   Say Y here if you want the debug print routines to direct
 374                   their output to the standard serial port on the RealView
 375                   PB1176 platform.
 376
 377         config DEBUG_S3C_UART0
 378                 depends on PLAT_SAMSUNG
 379                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 380                 bool "Use S3C UART 0 for low-level debug"
 381                 help
 382                   Say Y here if you want the debug print routines to direct
 383                   their output to UART 0. The port must have been initialised
 384                   by the boot-loader before use.
 385
 386                   The uncompressor code port configuration is now handled
 387                   by CONFIG_S3C_LOWLEVEL_UART_PORT.
 388
 389         config DEBUG_S3C_UART1
 390                 depends on PLAT_SAMSUNG
 391                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 392                 bool "Use S3C UART 1 for low-level debug"
 393                 help
 394                   Say Y here if you want the debug print routines to direct
 395                   their output to UART 1. The port must have been initialised
 396                   by the boot-loader before use.
 397
 398                   The uncompressor code port configuration is now handled
 399                   by CONFIG_S3C_LOWLEVEL_UART_PORT.
 400
 401         config DEBUG_S3C_UART2
 402                 depends on PLAT_SAMSUNG
 403                 select DEBUG_EXYNOS_UART if ARCH_EXYNOS
 404                 bool "Use S3C UART 2 for low-level debug"
 405                 help
 406                   Say Y here if you want the debug print routines to direct
 407                   their output to UART 2. The port must have been initialised
 408                   by the boot-loader before use.
 409
 410                   The uncompressor code port configuration is now handled
 411                   by CONFIG_S3C_LOWLEVEL_UART_PORT.
 412
 413         config DEBUG_S3C_UART3
 414                 depends on PLAT_SAMSUNG && ARCH_EXYNOS
 415                 select DEBUG_EXYNOS_UART
 416                 bool "Use S3C UART 3 for low-level debug"
 417                 help
 418                   Say Y here if you want the debug print routines to direct
 419                   their output to UART 3. The port must have been initialised
 420                   by the boot-loader before use.
 421
 422                   The uncompressor code port configuration is now handled
 423                   by CONFIG_S3C_LOWLEVEL_UART_PORT.
 424
 425         config DEBUG_SOCFPGA_UART
 426                 depends on ARCH_SOCFPGA
 427                 bool "Use SOCFPGA UART for low-level debug"
 428                 help
 429                   Say Y here if you want kernel low-level debugging support
 430                   on SOCFPGA based platforms.
 431
 432         config DEBUG_SUNXI_UART0
 433                 bool "Kernel low-level debugging messages via sunXi UART0"
 434                 depends on ARCH_SUNXI
 435                 help
 436                   Say Y here if you want kernel low-level debugging support
 437                   on Allwinner A1X based platforms on the UART0.
 438
 439         config DEBUG_SUNXI_UART1
 440                 bool "Kernel low-level debugging messages via sunXi UART1"
 441                 depends on ARCH_SUNXI
 442                 help
 443                   Say Y here if you want kernel low-level debugging support
 444                   on Allwinner A1X based platforms on the UART1.
 445
 446         config DEBUG_TEGRA_UART
 447                 depends on ARCH_TEGRA
 448                 bool "Use Tegra UART for low-level debug"
 449                 help
 450                   Say Y here if you want kernel low-level debugging support
 451                   on Tegra based platforms.
 452
 453         config DEBUG_SIRFPRIMA2_UART1
 454                 bool "Kernel low-level debugging messages via SiRFprimaII UART1"
 455                 depends on ARCH_PRIMA2
 456                 help
 457                   Say Y here if you want the debug print routines to direct
 458                   their output to the uart1 port on SiRFprimaII devices.
 459
 460         config DEBUG_SIRFMARCO_UART1
 461                 bool "Kernel low-level debugging messages via SiRFmarco UART1"
 462                 depends on ARCH_MARCO
 463                 help
 464                   Say Y here if you want the debug print routines to direct
 465                   their output to the uart1 port on SiRFmarco devices.
 466
 467         config DEBUG_UX500_UART
 468                 depends on ARCH_U8500
 469                 bool "Use Ux500 UART for low-level debug"
 470                 help
 471                   Say Y here if you want kernel low-level debugging support
 472                   on Ux500 based platforms.
 473
 474         config DEBUG_VEXPRESS_UART0_DETECT
 475                 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
 476                 depends on ARCH_VEXPRESS && CPU_CP15_MMU
 477                 help
 478                   This option enables a simple heuristic which tries to determine
 479                   the motherboard's memory map variant (original or RS1) and then
 480                   choose the relevant UART0 base address.
 481
 482                   Note that this will only work with standard A-class core tiles,
 483                   and may fail with non-standard SMM or custom software models.
 484
 485         config DEBUG_VEXPRESS_UART0_CA9
 486                 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
 487                 depends on ARCH_VEXPRESS
 488                 help
 489                   This option selects UART0 at 0x10009000. Except for custom models,
 490                   this applies only to the V2P-CA9 tile.
 491
 492         config DEBUG_VEXPRESS_UART0_RS1
 493                 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
 494                 depends on ARCH_VEXPRESS
 495                 help
 496                   This option selects UART0 at 0x1c090000. This applies to most
 497                   of the tiles using the RS1 memory map, including all new A-class
 498                   core tiles, FPGA-based SMMs and software models.
 499
 500         config DEBUG_VT8500_UART0
 501                 bool "Use UART0 on VIA/Wondermedia SoCs"
 502                 depends on ARCH_VT8500
 503                 help
 504                   This option selects UART0 on VIA/Wondermedia System-on-a-chip
 505                   devices, including VT8500, WM8505, WM8650 and WM8850.
 506
 507         config DEBUG_LL_UART_NONE
 508                 bool "No low-level debugging UART"
 509                 depends on !ARCH_MULTIPLATFORM
 510                 help
 511                   Say Y here if your platform doesn't provide a UART option
 512                   below. This relies on your platform choosing the right UART
 513                   definition internally in order for low-level debugging to
 514                   work.
 515
 516         config DEBUG_ICEDCC
 517                 bool "Kernel low-level debugging via EmbeddedICE DCC channel"
 518                 help
 519                   Say Y here if you want the debug print routines to direct
 520                   their output to the EmbeddedICE macrocell's DCC channel using
 521                   co-processor 14. This is known to work on the ARM9 style ICE
 522                   channel and on the XScale with the PEEDI.
 523
 524                   Note that the system will appear to hang during boot if there
 525                   is nothing connected to read from the DCC.
 526
 527         config DEBUG_SEMIHOSTING
 528                 bool "Kernel low-level debug output via semihosting I/O"
 529                 help
 530                   Semihosting enables code running on an ARM target to use
 531                   the I/O facilities on a host debugger/emulator through a
 532                   simple SVC call. The host debugger or emulator must have
 533                   semihosting enabled for the special svc call to be trapped
 534                   otherwise the kernel will crash.
 535
 536                   This is known to work with OpenOCD, as well as
 537                   ARM's Fast Models, or any other controlling environment
 538                   that implements semihosting.
 539
 540                   For more details about semihosting, please see
 541                   chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
 542
 543 endchoice
 544
 545 config DEBUG_EXYNOS_UART
 546         bool
 547
 548 config DEBUG_IMX_UART_PORT
 549         int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
 550                                                 DEBUG_IMX25_UART || \
 551                                                 DEBUG_IMX21_IMX27_UART || \
 552                                                 DEBUG_IMX31_UART || \
 553                                                 DEBUG_IMX35_UART || \
 554                                                 DEBUG_IMX51_UART || \
 555                                                 DEBUG_IMX53_UART || \
 556                                                 DEBUG_IMX6Q_UART
 557         default 1
 558         depends on ARCH_MXC
 559         help
 560           Choose UART port on which kernel low-level debug messages
 561           should be output.
 562
 563 choice
 564         prompt "Low-level debug console UART"
 565         depends on DEBUG_OMAP2PLUS_UART
 566
 567         config DEBUG_OMAP2UART1
 568                 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
 569                 help
 570                   This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
 571                   omap3 torpedo and 3530 lv som.
 572
 573         config DEBUG_OMAP2UART2
 574                 bool "OMAP2/3/4 UART2"
 575
 576         config DEBUG_OMAP2UART3
 577                 bool "OMAP2 UART3 (n8x0)"
 578
 579         config DEBUG_OMAP3UART3
 580                 bool "OMAP3 UART3 (most omap3 boards)"
 581                 help
 582                   This covers at least cm_t3x, beagle, crane, devkit8000,
 583                   igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
 584                   and 3517evm.
 585
 586         config DEBUG_OMAP4UART3
 587                 bool "OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
 588
 589         config DEBUG_OMAP3UART4
 590                 bool "OMAP36XX UART4"
 591
 592         config DEBUG_OMAP4UART4
 593                 bool "OMAP4/5 UART4"
 594
 595         config DEBUG_TI81XXUART1
 596                 bool "TI81XX UART1 (ti8148evm)"
 597
 598         config DEBUG_TI81XXUART2
 599                 bool "TI81XX UART2"
 600
 601         config DEBUG_TI81XXUART3
 602                 bool "TI81XX UART3 (ti8168evm)"
 603
 604         config DEBUG_AM33XXUART1
 605                 bool "AM33XX UART1"
 606
 607         config DEBUG_ZOOM_UART
 608                 bool "Zoom2/3 UART"
 609 endchoice
 610
 611 choice
 612         prompt "Low-level debug console UART"
 613         depends on DEBUG_LL && DEBUG_TEGRA_UART
 614
 615         config TEGRA_DEBUG_UART_AUTO_ODMDATA
 616         bool "Via ODMDATA"
 617         help
 618           Automatically determines which UART to use for low-level debug based
 619           on the ODMDATA value. This value is part of the BCT, and is written
 620           to the boot memory device using nvflash, or other flashing tool.
 621           When bits 19:18 are 3, then bits 17:15 indicate which UART to use;
 622           0/1/2/3/4 are UART A/B/C/D/E.
 623
 624         config TEGRA_DEBUG_UARTA
 625                 bool "UART A"
 626
 627         config TEGRA_DEBUG_UARTB
 628                 bool "UART B"
 629
 630         config TEGRA_DEBUG_UARTC
 631                 bool "UART C"
 632
 633         config TEGRA_DEBUG_UARTD
 634                 bool "UART D"
 635
 636         config TEGRA_DEBUG_UARTE
 637                 bool "UART E"
 638
 639 endchoice
 640
 641 config DEBUG_LL_INCLUDE
 642         string
 643         default "debug/bcm2835.S" if DEBUG_BCM2835
 644         default "debug/cns3xxx.S" if DEBUG_CNS3XXX
 645         default "debug/exynos.S" if DEBUG_EXYNOS_UART
 646         default "debug/highbank.S" if DEBUG_HIGHBANK_UART
 647         default "debug/icedcc.S" if DEBUG_ICEDCC
 648         default "debug/imx.S" if DEBUG_IMX1_UART || \
 649                                  DEBUG_IMX25_UART || \
 650                                  DEBUG_IMX21_IMX27_UART || \
 651                                  DEBUG_IMX31_UART || \
 652                                  DEBUG_IMX35_UART || \
 653                                  DEBUG_IMX51_UART || \
 654                                  DEBUG_IMX53_UART ||\
 655                                  DEBUG_IMX6Q_UART
 656         default "debug/mvebu.S" if DEBUG_MVEBU_UART
 657         default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
 658         default "debug/nomadik.S" if DEBUG_NOMADIK_UART
 659         default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
 660         default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART
 661         default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \
 662                                  DEBUG_MMP_UART3
 663         default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1
 664         default "debug/socfpga.S" if DEBUG_SOCFPGA_UART
 665         default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1
 666         default "debug/tegra.S" if DEBUG_TEGRA_UART
 667         default "debug/ux500.S" if DEBUG_UX500_UART
 668         default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \
 669                 DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1
 670         default "debug/vt8500.S" if DEBUG_VT8500_UART0
 671         default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
 672         default "mach/debug-macro.S"
 673
 674 config DEBUG_UNCOMPRESS
 675         bool
 676         default y if ARCH_MULTIPLATFORM && DEBUG_LL && \
 677                      !DEBUG_OMAP2PLUS_UART && \
 678                      !DEBUG_TEGRA_UART
 679
 680 config UNCOMPRESS_INCLUDE
 681         string
 682         default "debug/uncompress.h" if ARCH_MULTIPLATFORM
 683         default "mach/uncompress.h"
 684
 685 config EARLY_PRINTK
 686         bool "Early printk"
 687         depends on DEBUG_LL
 688         help
 689           Say Y here if you want to have an early console using the
 690           kernel low-level debugging functions. Add earlyprintk to your
 691           kernel parameters to enable this console.
 692
 693 config EARLY_PRINTK_DIRECT
 694         bool "Early printk direct"
 695         depends on DEBUG_LL
 696         help
 697           Say Y here if you want to have an early console using the
 698           kernel low-level debugging functions and EARLY_PRINTK is
 699           not early enough.
 700
 701 config OC_ETM
 702         bool "On-chip ETM and ETB"
 703         depends on ARM_AMBA
 704         help
 705           Enables the on-chip embedded trace macrocell and embedded trace
 706           buffer driver that will allow you to collect traces of the
 707           kernel code.
 708
 709 config ARM_KPROBES_TEST
 710         tristate "Kprobes test module"
 711         depends on KPROBES && MODULES
 712         help
 713           Perform tests of kprobes API and instruction set simulation.
 714
 715 config PID_IN_CONTEXTIDR
 716         bool "Write the current PID to the CONTEXTIDR register"
 717         depends on CPU_COPY_V6
 718         help
 719           Enabling this option causes the kernel to write the current PID to
 720           the PROCID field of the CONTEXTIDR register, at the expense of some
 721           additional instructions during context switch. Say Y here only if you
 722           are planning to use hardware trace tools with this kernel.
 723
 724 endmenu