1menu "Kernel hacking" 2 3source "lib/Kconfig.debug" 4 5config 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 17config 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 ;). 35config 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 45config 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 56config OLD_MCOUNT 57 bool 58 depends on FUNCTION_TRACER && FRAME_POINTER 59 default y 60 61config 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. 79config 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 92choice 93 prompt "Kernel low-level debugging port" 94 depends on DEBUG_LL 95 96 config AT91_DEBUG_LL_DBGU0 97 bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl" 98 depends on HAVE_AT91_DBGU0 99 100 config AT91_DEBUG_LL_DBGU1 101 bool "Kernel low-level debugging on 9263 and 9g45" 102 depends on HAVE_AT91_DBGU1 103 104 config DEBUG_BCM2835 105 bool "Kernel low-level debugging on BCM2835 PL011 UART" 106 depends on ARCH_BCM2835 107 select DEBUG_UART_PL01X 108 109 config DEBUG_BCM_5301X 110 bool "Kernel low-level debugging on BCM5301X UART1" 111 depends on ARCH_BCM_5301X 112 select DEBUG_UART_PL01X 113 114 config DEBUG_BCM_KONA_UART 115 bool "Kernel low-level debugging messages via BCM KONA UART" 116 depends on ARCH_BCM_MOBILE 117 select DEBUG_UART_8250 118 help 119 Say Y here if you want kernel low-level debugging support 120 on Broadcom SoC platforms. 121 This low level debug works for Broadcom 122 mobile SoCs in the Kona family of chips (e.g. bcm28155, 123 bcm11351, etc...) 124 125 config DEBUG_BERLIN_UART 126 bool "Marvell Berlin SoC Debug UART" 127 depends on ARCH_BERLIN 128 select DEBUG_UART_8250 129 help 130 Say Y here if you want kernel low-level debugging support 131 on Marvell Berlin SoC based platforms. 132 133 config DEBUG_CLPS711X_UART1 134 bool "Kernel low-level debugging messages via UART1" 135 depends on ARCH_CLPS711X 136 help 137 Say Y here if you want the debug print routines to direct 138 their output to the first serial port on these devices. 139 140 config DEBUG_CLPS711X_UART2 141 bool "Kernel low-level debugging messages via UART2" 142 depends on ARCH_CLPS711X 143 help 144 Say Y here if you want the debug print routines to direct 145 their output to the second serial port on these devices. 146 147 config DEBUG_CNS3XXX 148 bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx" 149 depends on ARCH_CNS3XXX 150 select DEBUG_UART_PL01X 151 help 152 Say Y here if you want the debug print routines to direct 153 their output to the CNS3xxx UART0. 154 155 config DEBUG_DAVINCI_DA8XX_UART1 156 bool "Kernel low-level debugging on DaVinci DA8XX using UART1" 157 depends on ARCH_DAVINCI_DA8XX 158 select DEBUG_UART_8250 159 help 160 Say Y here if you want the debug print routines to direct 161 their output to UART1 serial port on DaVinci DA8XX devices. 162 163 config DEBUG_DAVINCI_DA8XX_UART2 164 bool "Kernel low-level debugging on DaVinci DA8XX using UART2" 165 depends on ARCH_DAVINCI_DA8XX 166 select DEBUG_UART_8250 167 help 168 Say Y here if you want the debug print routines to direct 169 their output to UART2 serial port on DaVinci DA8XX devices. 170 171 config DEBUG_DAVINCI_DMx_UART0 172 bool "Kernel low-level debugging on DaVinci DMx using UART0" 173 depends on ARCH_DAVINCI_DMx 174 select DEBUG_UART_8250 175 help 176 Say Y here if you want the debug print routines to direct 177 their output to UART0 serial port on DaVinci DMx devices. 178 179 config DEBUG_ZYNQ_UART0 180 bool "Kernel low-level debugging on Xilinx Zynq using UART0" 181 depends on ARCH_ZYNQ 182 help 183 Say Y here if you want the debug print routines to direct 184 their output to UART0 on the Zynq platform. 185 186 config DEBUG_ZYNQ_UART1 187 bool "Kernel low-level debugging on Xilinx Zynq using UART1" 188 depends on ARCH_ZYNQ 189 help 190 Say Y here if you want the debug print routines to direct 191 their output to UART1 on the Zynq platform. 192 193 If you have a ZC702 board and want early boot messages to 194 appear on the USB serial adaptor, select this option. 195 196 config DEBUG_DC21285_PORT 197 bool "Kernel low-level debugging messages via footbridge serial port" 198 depends on FOOTBRIDGE 199 help 200 Say Y here if you want the debug print routines to direct 201 their output to the serial port in the DC21285 (Footbridge). 202 203 config DEBUG_FOOTBRIDGE_COM1 204 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" 205 depends on FOOTBRIDGE 206 help 207 Say Y here if you want the debug print routines to direct 208 their output to the 8250 at PCI COM1. 209 210 config DEBUG_HI3620_UART 211 bool "Hisilicon HI3620 Debug UART" 212 depends on ARCH_HI3xxx 213 select DEBUG_UART_PL01X 214 help 215 Say Y here if you want kernel low-level debugging support 216 on HI3620 UART. 217 218 config DEBUG_HI3716_UART 219 bool "Hisilicon Hi3716 Debug UART" 220 depends on ARCH_HI3xxx 221 select DEBUG_UART_PL01X 222 help 223 Say Y here if you want kernel low-level debugging support 224 on HI3716 UART. 225 226 config DEBUG_HIGHBANK_UART 227 bool "Kernel low-level debugging messages via Highbank UART" 228 depends on ARCH_HIGHBANK 229 select DEBUG_UART_PL01X 230 help 231 Say Y here if you want the debug print routines to direct 232 their output to the UART on Highbank based devices. 233 234 config DEBUG_IMX1_UART 235 bool "i.MX1 Debug UART" 236 depends on SOC_IMX1 237 help 238 Say Y here if you want kernel low-level debugging support 239 on i.MX1. 240 241 config DEBUG_IMX23_UART 242 bool "i.MX23 Debug UART" 243 depends on SOC_IMX23 244 select DEBUG_UART_PL01X 245 help 246 Say Y here if you want kernel low-level debugging support 247 on i.MX23. 248 249 config DEBUG_IMX25_UART 250 bool "i.MX25 Debug UART" 251 depends on SOC_IMX25 252 help 253 Say Y here if you want kernel low-level debugging support 254 on i.MX25. 255 256 config DEBUG_IMX21_IMX27_UART 257 bool "i.MX21 and i.MX27 Debug UART" 258 depends on SOC_IMX21 || SOC_IMX27 259 help 260 Say Y here if you want kernel low-level debugging support 261 on i.MX21 or i.MX27. 262 263 config DEBUG_IMX28_UART 264 bool "i.MX28 Debug UART" 265 depends on SOC_IMX28 266 select DEBUG_UART_PL01X 267 help 268 Say Y here if you want kernel low-level debugging support 269 on i.MX28. 270 271 config DEBUG_IMX31_UART 272 bool "i.MX31 Debug UART" 273 depends on SOC_IMX31 274 help 275 Say Y here if you want kernel low-level debugging support 276 on i.MX31. 277 278 config DEBUG_IMX35_UART 279 bool "i.MX35 Debug UART" 280 depends on SOC_IMX35 281 help 282 Say Y here if you want kernel low-level debugging support 283 on i.MX35. 284 285 config DEBUG_IMX50_UART 286 bool "i.MX50 Debug UART" 287 depends on SOC_IMX50 288 help 289 Say Y here if you want kernel low-level debugging support 290 on i.MX50. 291 292 config DEBUG_IMX51_UART 293 bool "i.MX51 Debug UART" 294 depends on SOC_IMX51 295 help 296 Say Y here if you want kernel low-level debugging support 297 on i.MX51. 298 299 config DEBUG_IMX53_UART 300 bool "i.MX53 Debug UART" 301 depends on SOC_IMX53 302 help 303 Say Y here if you want kernel low-level debugging support 304 on i.MX53. 305 306 config DEBUG_IMX6Q_UART 307 bool "i.MX6Q/DL Debug UART" 308 depends on SOC_IMX6Q 309 help 310 Say Y here if you want kernel low-level debugging support 311 on i.MX6Q/DL. 312 313 config DEBUG_IMX6SL_UART 314 bool "i.MX6SL Debug UART" 315 depends on SOC_IMX6SL 316 help 317 Say Y here if you want kernel low-level debugging support 318 on i.MX6SL. 319 320 config DEBUG_IMX6SX_UART 321 bool "i.MX6SX Debug UART" 322 depends on SOC_IMX6SX 323 help 324 Say Y here if you want kernel low-level debugging support 325 on i.MX6SX. 326 327 config DEBUG_KEYSTONE_UART0 328 bool "Kernel low-level debugging on KEYSTONE2 using UART0" 329 depends on ARCH_KEYSTONE 330 select DEBUG_UART_8250 331 help 332 Say Y here if you want the debug print routines to direct 333 their output to UART0 serial port on KEYSTONE2 devices. 334 335 config DEBUG_KEYSTONE_UART1 336 bool "Kernel low-level debugging on KEYSTONE2 using UART1" 337 depends on ARCH_KEYSTONE 338 select DEBUG_UART_8250 339 help 340 Say Y here if you want the debug print routines to direct 341 their output to UART1 serial port on KEYSTONE2 devices. 342 343 config DEBUG_MMP_UART2 344 bool "Kernel low-level debugging message via MMP UART2" 345 depends on ARCH_MMP 346 select DEBUG_UART_8250 347 help 348 Say Y here if you want kernel low-level debugging support 349 on MMP UART2. 350 351 config DEBUG_MMP_UART3 352 bool "Kernel low-level debugging message via MMP UART3" 353 depends on ARCH_MMP 354 select DEBUG_UART_8250 355 help 356 Say Y here if you want kernel low-level debugging support 357 on MMP UART3. 358 359 config DEBUG_MSM_UART 360 bool "Kernel low-level debugging messages via MSM UART" 361 depends on ARCH_MSM 362 help 363 Say Y here if you want the debug print routines to direct 364 their output to the serial port on MSM devices. 365 366 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE # 367 MSM7X00A, QSD8X50 0xa9a00000 0xe1000000 UART1 368 MSM7X00A, QSD8X50 0xa9b00000 0xe1000000 UART2 369 MSM7X00A, QSD8X50 0xa9c00000 0xe1000000 UART3 370 371 MSM7X30 0xaca00000 0xe1000000 UART1 372 MSM7X30 0xacb00000 0xe1000000 UART2 373 MSM7X30 0xacc00000 0xe1000000 UART3 374 375 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration 376 options based on your needs. 377 378 config DEBUG_QCOM_UARTDM 379 bool "Kernel low-level debugging messages via QCOM UARTDM" 380 depends on ARCH_QCOM 381 help 382 Say Y here if you want the debug print routines to direct 383 their output to the serial port on Qualcomm devices. 384 385 ARCH DEBUG_UART_PHYS DEBUG_UART_BASE 386 APQ8084 0xf995e000 0xfa75e000 387 MSM8X60 0x19c40000 0xf0040000 388 MSM8960 0x16440000 0xf0040000 389 MSM8974 0xf991e000 0xfa71e000 390 391 Please adjust DEBUG_UART_PHYS and DEBUG_UART_BASE configuration 392 options based on your needs. 393 394 config DEBUG_MVEBU_UART 395 bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)" 396 depends on ARCH_MVEBU 397 select DEBUG_UART_8250 398 help 399 Say Y here if you want kernel low-level debugging support 400 on MVEBU based platforms. 401 402 This option should be used with the old bootloaders 403 that left the internal registers mapped at 404 0xd0000000. As of today, this is the case on 405 platforms such as the Globalscale Mirabox or the 406 Plathome OpenBlocks AX3, when using the original 407 bootloader. 408 409 If the wrong DEBUG_MVEBU_UART* option is selected, 410 when u-boot hands over to the kernel, the system 411 silently crashes, with no serial output at all. 412 413 config DEBUG_MVEBU_UART_ALTERNATE 414 bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)" 415 depends on ARCH_MVEBU 416 select DEBUG_UART_8250 417 help 418 Say Y here if you want kernel low-level debugging support 419 on MVEBU based platforms. 420 421 This option should be used with the new bootloaders 422 that remap the internal registers at 0xf1000000. 423 424 If the wrong DEBUG_MVEBU_UART* option is selected, 425 when u-boot hands over to the kernel, the system 426 silently crashes, with no serial output at all. 427 428 config DEBUG_VF_UART 429 bool "Vybrid UART" 430 depends on SOC_VF610 431 help 432 Say Y here if you want kernel low-level debugging support 433 on Vybrid based platforms. 434 435 config DEBUG_NOMADIK_UART 436 bool "Kernel low-level debugging messages via NOMADIK UART" 437 depends on ARCH_NOMADIK 438 select DEBUG_UART_PL01X 439 help 440 Say Y here if you want kernel low-level debugging support 441 on NOMADIK based platforms. 442 443 config DEBUG_NSPIRE_CLASSIC_UART 444 bool "Kernel low-level debugging via TI-NSPIRE 8250 UART" 445 depends on ARCH_NSPIRE 446 select DEBUG_UART_8250 447 help 448 Say Y here if you want kernel low-level debugging support 449 on TI-NSPIRE classic models. 450 451 config DEBUG_NSPIRE_CX_UART 452 bool "Kernel low-level debugging via TI-NSPIRE PL011 UART" 453 depends on ARCH_NSPIRE 454 select DEBUG_UART_PL01X 455 help 456 Say Y here if you want kernel low-level debugging support 457 on TI-NSPIRE CX models. 458 459 config DEBUG_OMAP2UART1 460 bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" 461 depends on ARCH_OMAP2PLUS 462 select DEBUG_OMAP2PLUS_UART 463 help 464 This covers at least h4, 2430sdp, 3430sdp, 3630sdp, 465 omap3 torpedo and 3530 lv som. 466 467 config DEBUG_OMAP2UART2 468 bool "Kernel low-level debugging messages via OMAP2/3/4 UART2" 469 depends on ARCH_OMAP2PLUS 470 select DEBUG_OMAP2PLUS_UART 471 472 config DEBUG_OMAP2UART3 473 bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)" 474 depends on ARCH_OMAP2PLUS 475 select DEBUG_OMAP2PLUS_UART 476 477 config DEBUG_OMAP3UART3 478 bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)" 479 depends on ARCH_OMAP2PLUS 480 select DEBUG_OMAP2PLUS_UART 481 help 482 This covers at least cm_t3x, beagle, crane, devkit8000, 483 igep00x0, ldp, n900, n9(50), pandora, overo, touchbook, 484 and 3517evm. 485 486 config DEBUG_OMAP4UART3 487 bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)" 488 depends on ARCH_OMAP2PLUS 489 select DEBUG_OMAP2PLUS_UART 490 491 config DEBUG_OMAP3UART4 492 bool "Kernel low-level debugging messages via OMAP36XX UART4" 493 depends on ARCH_OMAP2PLUS 494 select DEBUG_OMAP2PLUS_UART 495 496 config DEBUG_OMAP4UART4 497 bool "Kernel low-level debugging messages via OMAP4/5 UART4" 498 depends on ARCH_OMAP2PLUS 499 select DEBUG_OMAP2PLUS_UART 500 501 config DEBUG_TI81XXUART1 502 bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)" 503 depends on ARCH_OMAP2PLUS 504 select DEBUG_OMAP2PLUS_UART 505 506 config DEBUG_TI81XXUART2 507 bool "Kernel low-level debugging messages via TI81XX UART2" 508 depends on ARCH_OMAP2PLUS 509 select DEBUG_OMAP2PLUS_UART 510 511 config DEBUG_TI81XXUART3 512 bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)" 513 depends on ARCH_OMAP2PLUS 514 select DEBUG_OMAP2PLUS_UART 515 516 config DEBUG_AM33XXUART1 517 bool "Kernel low-level debugging messages via AM33XX UART1" 518 depends on ARCH_OMAP2PLUS 519 select DEBUG_OMAP2PLUS_UART 520 521 config DEBUG_ZOOM_UART 522 bool "Kernel low-level debugging messages via Zoom2/3 UART" 523 depends on ARCH_OMAP2PLUS 524 select DEBUG_OMAP2PLUS_UART 525 526 config DEBUG_PICOXCELL_UART 527 depends on ARCH_PICOXCELL 528 bool "Use PicoXcell UART for low-level debug" 529 select DEBUG_UART_8250 530 help 531 Say Y here if you want kernel low-level debugging support 532 on PicoXcell based platforms. 533 534 config DEBUG_PXA_UART1 535 depends on ARCH_PXA 536 bool "Use PXA UART1 for low-level debug" 537 select DEBUG_UART_8250 538 help 539 Say Y here if you want kernel low-level debugging support 540 on PXA UART1. 541 542 config DEBUG_REALVIEW_STD_PORT 543 bool "RealView Default UART" 544 depends on ARCH_REALVIEW 545 select DEBUG_UART_PL01X 546 help 547 Say Y here if you want the debug print routines to direct 548 their output to the serial port on RealView EB, PB11MP, PBA8 549 and PBX platforms. 550 551 config DEBUG_REALVIEW_PB1176_PORT 552 bool "RealView PB1176 UART" 553 depends on MACH_REALVIEW_PB1176 554 select DEBUG_UART_PL01X 555 help 556 Say Y here if you want the debug print routines to direct 557 their output to the standard serial port on the RealView 558 PB1176 platform. 559 560 config DEBUG_RK29_UART0 561 bool "Kernel low-level debugging messages via Rockchip RK29 UART0" 562 depends on ARCH_ROCKCHIP 563 select DEBUG_UART_8250 564 help 565 Say Y here if you want kernel low-level debugging support 566 on Rockchip based platforms. 567 568 config DEBUG_RK29_UART1 569 bool "Kernel low-level debugging messages via Rockchip RK29 UART1" 570 depends on ARCH_ROCKCHIP 571 select DEBUG_UART_8250 572 help 573 Say Y here if you want kernel low-level debugging support 574 on Rockchip based platforms. 575 576 config DEBUG_RK29_UART2 577 bool "Kernel low-level debugging messages via Rockchip RK29 UART2" 578 depends on ARCH_ROCKCHIP 579 select DEBUG_UART_8250 580 help 581 Say Y here if you want kernel low-level debugging support 582 on Rockchip based platforms. 583 584 config DEBUG_RK3X_UART0 585 bool "Kernel low-level debugging messages via Rockchip RK3X UART0" 586 depends on ARCH_ROCKCHIP 587 select DEBUG_UART_8250 588 help 589 Say Y here if you want kernel low-level debugging support 590 on Rockchip based platforms. 591 592 config DEBUG_RK3X_UART1 593 bool "Kernel low-level debugging messages via Rockchip RK3X UART1" 594 depends on ARCH_ROCKCHIP 595 select DEBUG_UART_8250 596 help 597 Say Y here if you want kernel low-level debugging support 598 on Rockchip based platforms. 599 600 config DEBUG_RK3X_UART2 601 bool "Kernel low-level debugging messages via Rockchip RK3X UART2" 602 depends on ARCH_ROCKCHIP 603 select DEBUG_UART_8250 604 help 605 Say Y here if you want kernel low-level debugging support 606 on Rockchip based platforms. 607 608 config DEBUG_RK3X_UART3 609 bool "Kernel low-level debugging messages via Rockchip RK3X UART3" 610 depends on ARCH_ROCKCHIP 611 select DEBUG_UART_8250 612 help 613 Say Y here if you want kernel low-level debugging support 614 on Rockchip based platforms. 615 616 config DEBUG_S3C_UART0 617 depends on PLAT_SAMSUNG 618 select DEBUG_EXYNOS_UART if ARCH_EXYNOS 619 select DEBUG_S3C24XX_UART if ARCH_S3C24XX 620 bool "Use S3C UART 0 for low-level debug" 621 help 622 Say Y here if you want the debug print routines to direct 623 their output to UART 0. The port must have been initialised 624 by the boot-loader before use. 625 626 The uncompressor code port configuration is now handled 627 by CONFIG_S3C_LOWLEVEL_UART_PORT. 628 629 config DEBUG_S3C_UART1 630 depends on PLAT_SAMSUNG 631 select DEBUG_EXYNOS_UART if ARCH_EXYNOS 632 select DEBUG_S3C24XX_UART if ARCH_S3C24XX 633 bool "Use S3C UART 1 for low-level debug" 634 help 635 Say Y here if you want the debug print routines to direct 636 their output to UART 1. The port must have been initialised 637 by the boot-loader before use. 638 639 The uncompressor code port configuration is now handled 640 by CONFIG_S3C_LOWLEVEL_UART_PORT. 641 642 config DEBUG_S3C_UART2 643 depends on PLAT_SAMSUNG 644 select DEBUG_EXYNOS_UART if ARCH_EXYNOS 645 select DEBUG_S3C24XX_UART if ARCH_S3C24XX 646 bool "Use S3C UART 2 for low-level debug" 647 help 648 Say Y here if you want the debug print routines to direct 649 their output to UART 2. The port must have been initialised 650 by the boot-loader before use. 651 652 The uncompressor code port configuration is now handled 653 by CONFIG_S3C_LOWLEVEL_UART_PORT. 654 655 config DEBUG_S3C_UART3 656 depends on PLAT_SAMSUNG && ARCH_EXYNOS 657 select DEBUG_EXYNOS_UART 658 bool "Use S3C UART 3 for low-level debug" 659 help 660 Say Y here if you want the debug print routines to direct 661 their output to UART 3. The port must have been initialised 662 by the boot-loader before use. 663 664 The uncompressor code port configuration is now handled 665 by CONFIG_S3C_LOWLEVEL_UART_PORT. 666 667 config DEBUG_S3C2410_UART0 668 depends on ARCH_S3C24XX 669 select DEBUG_S3C2410_UART 670 bool "Use S3C2410/S3C2412 UART 0 for low-level debug" 671 help 672 Say Y here if you want the debug print routines to direct 673 their output to UART 0. The port must have been initialised 674 by the boot-loader before use. 675 676 config DEBUG_S3C2410_UART1 677 depends on ARCH_S3C24XX 678 select DEBUG_S3C2410_UART 679 bool "Use S3C2410/S3C2412 UART 1 for low-level debug" 680 help 681 Say Y here if you want the debug print routines to direct 682 their output to UART 1. The port must have been initialised 683 by the boot-loader before use. 684 685 config DEBUG_S3C2410_UART2 686 depends on ARCH_S3C24XX 687 select DEBUG_S3C2410_UART 688 bool "Use S3C2410/S3C2412 UART 2 for low-level debug" 689 help 690 Say Y here if you want the debug print routines to direct 691 their output to UART 2. The port must have been initialised 692 by the boot-loader before use. 693 694 config DEBUG_SOCFPGA_UART 695 depends on ARCH_SOCFPGA 696 bool "Use SOCFPGA UART for low-level debug" 697 select DEBUG_UART_8250 698 help 699 Say Y here if you want kernel low-level debugging support 700 on SOCFPGA based platforms. 701 702 config DEBUG_SUNXI_UART0 703 bool "Kernel low-level debugging messages via sunXi UART0" 704 depends on ARCH_SUNXI 705 select DEBUG_UART_8250 706 help 707 Say Y here if you want kernel low-level debugging support 708 on Allwinner A1X based platforms on the UART0. 709 710 config DEBUG_SUNXI_UART1 711 bool "Kernel low-level debugging messages via sunXi UART1" 712 depends on ARCH_SUNXI 713 select DEBUG_UART_8250 714 help 715 Say Y here if you want kernel low-level debugging support 716 on Allwinner A1X based platforms on the UART1. 717 718 config TEGRA_DEBUG_UART_AUTO_ODMDATA 719 bool "Kernel low-level debugging messages via Tegra UART via ODMDATA" 720 depends on ARCH_TEGRA 721 select DEBUG_TEGRA_UART 722 help 723 Automatically determines which UART to use for low-level 724 debug based on the ODMDATA value. This value is part of 725 the BCT, and is written to the boot memory device using 726 nvflash, or other flashing tool. When bits 19:18 are 3, 727 then bits 17:15 indicate which UART to use; 0/1/2/3/4 728 are UART A/B/C/D/E. 729 730 config TEGRA_DEBUG_UARTA 731 bool "Kernel low-level debugging messages via Tegra UART A" 732 depends on ARCH_TEGRA 733 select DEBUG_TEGRA_UART 734 help 735 Say Y here if you want kernel low-level debugging support 736 on Tegra based platforms. 737 738 config TEGRA_DEBUG_UARTB 739 bool "Kernel low-level debugging messages via Tegra UART B" 740 depends on ARCH_TEGRA 741 select DEBUG_TEGRA_UART 742 help 743 Say Y here if you want kernel low-level debugging support 744 on Tegra based platforms. 745 746 config TEGRA_DEBUG_UARTC 747 bool "Kernel low-level debugging messages via Tegra UART C" 748 depends on ARCH_TEGRA 749 select DEBUG_TEGRA_UART 750 help 751 Say Y here if you want kernel low-level debugging support 752 on Tegra based platforms. 753 754 config TEGRA_DEBUG_UARTD 755 bool "Kernel low-level debugging messages via Tegra UART D" 756 depends on ARCH_TEGRA 757 select DEBUG_TEGRA_UART 758 help 759 Say Y here if you want kernel low-level debugging support 760 on Tegra based platforms. 761 762 config TEGRA_DEBUG_UARTE 763 bool "Kernel low-level debugging messages via Tegra UART E" 764 depends on ARCH_TEGRA 765 select DEBUG_TEGRA_UART 766 help 767 Say Y here if you want kernel low-level debugging support 768 on Tegra based platforms. 769 770 config DEBUG_SIRFPRIMA2_UART1 771 bool "Kernel low-level debugging messages via SiRFprimaII UART1" 772 depends on ARCH_PRIMA2 773 help 774 Say Y here if you want the debug print routines to direct 775 their output to the uart1 port on SiRFprimaII devices. 776 777 config DEBUG_SIRFMARCO_UART1 778 bool "Kernel low-level debugging messages via SiRFmarco UART1" 779 depends on ARCH_MARCO 780 help 781 Say Y here if you want the debug print routines to direct 782 their output to the uart1 port on SiRFmarco devices. 783 784 config STIH41X_DEBUG_ASC2 785 bool "Use StiH415/416 ASC2 UART for low-level debug" 786 depends on ARCH_STI 787 select DEBUG_STI_UART 788 help 789 Say Y here if you want kernel low-level debugging support 790 on STiH415/416 based platforms like b2000, which has 791 default UART wired up to ASC2. 792 793 If unsure, say N. 794 795 config STIH41X_DEBUG_SBC_ASC1 796 bool "Use StiH415/416 SBC ASC1 UART for low-level debug" 797 depends on ARCH_STI 798 select DEBUG_STI_UART 799 help 800 Say Y here if you want kernel low-level debugging support 801 on STiH415/416 based platforms like b2020. which has 802 default UART wired up to SBC ASC1. 803 804 If unsure, say N. 805 806 config DEBUG_U300_UART 807 bool "Kernel low-level debugging messages via U300 UART0" 808 depends on ARCH_U300 809 select DEBUG_UART_PL01X 810 help 811 Say Y here if you want the debug print routines to direct 812 their output to the uart port on U300 devices. 813 814 config DEBUG_UX500_UART 815 depends on ARCH_U8500 816 bool "Use Ux500 UART for low-level debug" 817 help 818 Say Y here if you want kernel low-level debugging support 819 on Ux500 based platforms. 820 821 config DEBUG_VEXPRESS_UART0_DETECT 822 bool "Autodetect UART0 on Versatile Express Cortex-A core tiles" 823 depends on ARCH_VEXPRESS && CPU_CP15_MMU 824 help 825 This option enables a simple heuristic which tries to determine 826 the motherboard's memory map variant (original or RS1) and then 827 choose the relevant UART0 base address. 828 829 Note that this will only work with standard A-class core tiles, 830 and may fail with non-standard SMM or custom software models. 831 832 config DEBUG_VEXPRESS_UART0_CA9 833 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)" 834 depends on ARCH_VEXPRESS 835 select DEBUG_UART_PL01X 836 help 837 This option selects UART0 at 0x10009000. Except for custom models, 838 this applies only to the V2P-CA9 tile. 839 840 config DEBUG_VEXPRESS_UART0_RS1 841 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)" 842 depends on ARCH_VEXPRESS 843 select DEBUG_UART_PL01X 844 help 845 This option selects UART0 at 0x1c090000. This applies to most 846 of the tiles using the RS1 memory map, including all new A-class 847 core tiles, FPGA-based SMMs and software models. 848 849 config DEBUG_VEXPRESS_UART0_CRX 850 bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)" 851 depends on ARCH_VEXPRESS && !MMU 852 select DEBUG_UART_PL01X 853 help 854 This option selects UART0 at 0xb0090000. This is appropriate for 855 Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7 856 857 config DEBUG_VT8500_UART0 858 bool "Use UART0 on VIA/Wondermedia SoCs" 859 depends on ARCH_VT8500 860 help 861 This option selects UART0 on VIA/Wondermedia System-on-a-chip 862 devices, including VT8500, WM8505, WM8650 and WM8850. 863 864 config DEBUG_LL_UART_NONE 865 bool "No low-level debugging UART" 866 depends on !ARCH_MULTIPLATFORM 867 help 868 Say Y here if your platform doesn't provide a UART option 869 above. This relies on your platform choosing the right UART 870 definition internally in order for low-level debugging to 871 work. 872 873 config DEBUG_ICEDCC 874 bool "Kernel low-level debugging via EmbeddedICE DCC channel" 875 help 876 Say Y here if you want the debug print routines to direct 877 their output to the EmbeddedICE macrocell's DCC channel using 878 co-processor 14. This is known to work on the ARM9 style ICE 879 channel and on the XScale with the PEEDI. 880 881 Note that the system will appear to hang during boot if there 882 is nothing connected to read from the DCC. 883 884 config DEBUG_SEMIHOSTING 885 bool "Kernel low-level debug output via semihosting I/O" 886 help 887 Semihosting enables code running on an ARM target to use 888 the I/O facilities on a host debugger/emulator through a 889 simple SVC call. The host debugger or emulator must have 890 semihosting enabled for the special svc call to be trapped 891 otherwise the kernel will crash. 892 893 This is known to work with OpenOCD, as well as 894 ARM's Fast Models, or any other controlling environment 895 that implements semihosting. 896 897 For more details about semihosting, please see 898 chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd. 899 900 config DEBUG_LL_UART_8250 901 bool "Kernel low-level debugging via 8250 UART" 902 help 903 Say Y here if you wish the debug print routes to direct 904 their output to an 8250 UART. You can use this option 905 to provide the parameters for the 8250 UART rather than 906 selecting one of the platform specific options above if 907 you know the parameters for the port. 908 909 This option is preferred over the platform specific 910 options; the platform specific options are deprecated 911 and will be soon removed. 912 913 config DEBUG_LL_UART_EFM32 914 bool "Kernel low-level debugging via efm32 UART" 915 depends on ARCH_EFM32 916 help 917 Say Y here if you want the debug print routines to direct 918 their output to an UART or USART port on efm32 based 919 machines. Use the following addresses for DEBUG_UART_PHYS: 920 921 0x4000c000 | USART0 922 0x4000c400 | USART1 923 0x4000c800 | USART2 924 0x4000e000 | UART0 925 0x4000e400 | UART1 926 927 config DEBUG_LL_UART_PL01X 928 bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART" 929 help 930 Say Y here if you wish the debug print routes to direct 931 their output to a PL01x Primecell UART. You can use 932 this option to provide the parameters for the UART 933 rather than selecting one of the platform specific 934 options above if you know the parameters for the port. 935 936 This option is preferred over the platform specific 937 options; the platform specific options are deprecated 938 and will be soon removed. 939 940endchoice 941 942config DEBUG_EXYNOS_UART 943 bool 944 945config DEBUG_S3C2410_UART 946 bool 947 select DEBUG_S3C24XX_UART 948 949config DEBUG_S3C24XX_UART 950 bool 951 952config DEBUG_OMAP2PLUS_UART 953 bool 954 depends on ARCH_OMAP2PLUS 955 956config DEBUG_IMX_UART_PORT 957 int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \ 958 DEBUG_IMX25_UART || \ 959 DEBUG_IMX21_IMX27_UART || \ 960 DEBUG_IMX31_UART || \ 961 DEBUG_IMX35_UART || \ 962 DEBUG_IMX50_UART || \ 963 DEBUG_IMX51_UART || \ 964 DEBUG_IMX53_UART || \ 965 DEBUG_IMX6Q_UART || \ 966 DEBUG_IMX6SL_UART || \ 967 DEBUG_IMX6SX_UART 968 default 1 969 depends on ARCH_MXC 970 help 971 Choose UART port on which kernel low-level debug messages 972 should be output. 973 974config DEBUG_VF_UART_PORT 975 int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART 976 default 1 977 range 0 3 978 depends on SOC_VF610 979 help 980 Choose UART port on which kernel low-level debug messages 981 should be output. 982 983config DEBUG_TEGRA_UART 984 bool 985 depends on ARCH_TEGRA 986 987config DEBUG_STI_UART 988 bool 989 depends on ARCH_STI 990 991config DEBUG_LL_INCLUDE 992 string 993 default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250 994 default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X 995 default "debug/exynos.S" if DEBUG_EXYNOS_UART 996 default "debug/efm32.S" if DEBUG_LL_UART_EFM32 997 default "debug/icedcc.S" if DEBUG_ICEDCC 998 default "debug/imx.S" if DEBUG_IMX1_UART || \ 999 DEBUG_IMX25_UART || \ 1000 DEBUG_IMX21_IMX27_UART || \ 1001 DEBUG_IMX31_UART || \ 1002 DEBUG_IMX35_UART || \ 1003 DEBUG_IMX50_UART || \ 1004 DEBUG_IMX51_UART || \ 1005 DEBUG_IMX53_UART ||\ 1006 DEBUG_IMX6Q_UART || \ 1007 DEBUG_IMX6SL_UART || \ 1008 DEBUG_IMX6SX_UART 1009 default "debug/msm.S" if DEBUG_MSM_UART || DEBUG_QCOM_UARTDM 1010 default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART 1011 default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART 1012 default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 1013 default "debug/sti.S" if DEBUG_STI_UART 1014 default "debug/tegra.S" if DEBUG_TEGRA_UART 1015 default "debug/ux500.S" if DEBUG_UX500_UART 1016 default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT 1017 default "debug/vf.S" if DEBUG_VF_UART 1018 default "debug/vt8500.S" if DEBUG_VT8500_UART0 1019 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 1020 default "mach/debug-macro.S" 1021 1022# Compatibility options for PL01x 1023config DEBUG_UART_PL01X 1024 def_bool ARCH_EP93XX || \ 1025 ARCH_INTEGRATOR || \ 1026 ARCH_SPEAR3XX || \ 1027 ARCH_SPEAR6XX || \ 1028 ARCH_SPEAR13XX || \ 1029 ARCH_VERSATILE 1030 1031# Compatibility options for 8250 1032config DEBUG_UART_8250 1033 def_bool ARCH_DOVE || ARCH_EBSA110 || \ 1034 (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \ 1035 ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \ 1036 ARCH_IOP33X || ARCH_IXP4XX || ARCH_KIRKWOOD || \ 1037 ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC 1038 1039config DEBUG_UART_PHYS 1040 hex "Physical base address of debug UART" 1041 default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0 1042 default 0x01c28000 if DEBUG_SUNXI_UART0 1043 default 0x01c28400 if DEBUG_SUNXI_UART1 1044 default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1 1045 default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2 1046 default 0x02530c00 if DEBUG_KEYSTONE_UART0 1047 default 0x02531000 if DEBUG_KEYSTONE_UART1 1048 default 0x03010fe0 if ARCH_RPC 1049 default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \ 1050 DEBUG_VEXPRESS_UART0_CA9 1051 default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT 1052 default 0x10124000 if DEBUG_RK3X_UART0 1053 default 0x10126000 if DEBUG_RK3X_UART1 1054 default 0x101f1000 if ARCH_VERSATILE 1055 default 0x101fb000 if DEBUG_NOMADIK_UART 1056 default 0x16000000 if ARCH_INTEGRATOR 1057 default 0x18000300 if DEBUG_BCM_5301X 1058 default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1 1059 default 0x20060000 if DEBUG_RK29_UART0 1060 default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 1061 default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 1062 default 0x20201000 if DEBUG_BCM2835 1063 default 0x3e000000 if DEBUG_BCM_KONA_UART 1064 default 0x4000e400 if DEBUG_LL_UART_EFM32 1065 default 0x40090000 if ARCH_LPC32XX 1066 default 0x40100000 if DEBUG_PXA_UART1 1067 default 0x42000000 if ARCH_GEMINI 1068 default 0x50000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \ 1069 DEBUG_S3C2410_UART0) 1070 default 0x50004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \ 1071 DEBUG_S3C2410_UART1) 1072 default 0x50008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \ 1073 DEBUG_S3C2410_UART2) 1074 default 0x7c0003f8 if FOOTBRIDGE 1075 default 0x80070000 if DEBUG_IMX23_UART 1076 default 0x80074000 if DEBUG_IMX28_UART 1077 default 0x80230000 if DEBUG_PICOXCELL_UART 1078 default 0x808c0000 if ARCH_EP93XX 1079 default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART 1080 default 0xa9a00000 if DEBUG_MSM_UART 1081 default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX 1082 default 0xc0013000 if DEBUG_U300_UART 1083 default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN 1084 default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN 1085 default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX 1086 default 0xd0012000 if DEBUG_MVEBU_UART 1087 default 0xd4017000 if DEBUG_MMP_UART2 1088 default 0xd4018000 if DEBUG_MMP_UART3 1089 default 0xe0000000 if ARCH_SPEAR13XX 1090 default 0xf0000be0 if ARCH_EBSA110 1091 default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE 1092 default 0xf1012000 if ARCH_DOVE || ARCH_KIRKWOOD || ARCH_MV78XX0 || \ 1093 ARCH_ORION5X 1094 default 0xf7fc9000 if DEBUG_BERLIN_UART 1095 default 0xf8b00000 if DEBUG_HI3716_UART 1096 default 0xf991e000 if DEBUG_QCOM_UARTDM 1097 default 0xfcb00000 if DEBUG_HI3620_UART 1098 default 0xfe800000 if ARCH_IOP32X 1099 default 0xffc02000 if DEBUG_SOCFPGA_UART 1100 default 0xffd82340 if ARCH_IOP13XX 1101 default 0xfff36000 if DEBUG_HIGHBANK_UART 1102 default 0xfffff700 if ARCH_IOP33X 1103 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ 1104 DEBUG_LL_UART_EFM32 || \ 1105 DEBUG_UART_8250 || DEBUG_UART_PL01X || \ 1106 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART 1107 1108config DEBUG_UART_VIRT 1109 hex "Virtual base address of debug UART" 1110 default 0xe0010fe0 if ARCH_RPC 1111 default 0xe1000000 if DEBUG_MSM_UART 1112 default 0xf0000be0 if ARCH_EBSA110 1113 default 0xf0009000 if DEBUG_CNS3XXX 1114 default 0xf01fb000 if DEBUG_NOMADIK_UART 1115 default 0xf0201000 if DEBUG_BCM2835 1116 default 0xf1000300 if DEBUG_BCM_5301X 1117 default 0xf11f1000 if ARCH_VERSATILE 1118 default 0xf1600000 if ARCH_INTEGRATOR 1119 default 0xf1c28000 if DEBUG_SUNXI_UART0 1120 default 0xf1c28400 if DEBUG_SUNXI_UART1 1121 default 0xf2100000 if DEBUG_PXA_UART1 1122 default 0xf4090000 if ARCH_LPC32XX 1123 default 0xf4200000 if ARCH_GEMINI 1124 default 0xf7000000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART0 || \ 1125 DEBUG_S3C2410_UART0) 1126 default 0xf7004000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART1 || \ 1127 DEBUG_S3C2410_UART1) 1128 default 0xf7008000 if DEBUG_S3C24XX_UART && (DEBUG_S3C_UART2 || \ 1129 DEBUG_S3C2410_UART2) 1130 default 0xf7fc9000 if DEBUG_BERLIN_UART 1131 default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9 1132 default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1 1133 default 0xfa71e000 if DEBUG_QCOM_UARTDM 1134 default 0xfb009000 if DEBUG_REALVIEW_STD_PORT 1135 default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT 1136 default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX 1137 default 0xfd000000 if ARCH_SPEAR13XX 1138 default 0xfd012000 if ARCH_MV78XX0 1139 default 0xfde12000 if ARCH_DOVE 1140 default 0xfe012000 if ARCH_ORION5X 1141 default 0xfe017000 if DEBUG_MMP_UART2 1142 default 0xfe018000 if DEBUG_MMP_UART3 1143 default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART 1144 default 0xfe230000 if DEBUG_PICOXCELL_UART 1145 default 0xfe300000 if DEBUG_BCM_KONA_UART 1146 default 0xfe800000 if ARCH_IOP32X 1147 default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HI3716_UART 1148 default 0xfeb24000 if DEBUG_RK3X_UART0 1149 default 0xfeb26000 if DEBUG_RK3X_UART1 1150 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0 1151 default 0xfeb31000 if DEBUG_KEYSTONE_UART1 1152 default 0xfec02000 if DEBUG_SOCFPGA_UART 1153 default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE 1154 default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0 1155 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1 1156 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 1157 default 0xfed12000 if ARCH_KIRKWOOD 1158 default 0xfed60000 if DEBUG_RK29_UART0 1159 default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 1160 default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 1161 default 0xfedc0000 if ARCH_EP93XX 1162 default 0xfee003f8 if FOOTBRIDGE 1163 default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART 1164 default 0xfee82340 if ARCH_IOP13XX 1165 default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN 1166 default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN 1167 default 0xfef36000 if DEBUG_HIGHBANK_UART 1168 default 0xfefff700 if ARCH_IOP33X 1169 default 0xff003000 if DEBUG_U300_UART 1170 default DEBUG_UART_PHYS if !MMU 1171 depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ 1172 DEBUG_UART_8250 || DEBUG_UART_PL01X || \ 1173 DEBUG_MSM_UART || DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART 1174 1175config DEBUG_UART_8250_SHIFT 1176 int "Register offset shift for the 8250 debug UART" 1177 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 1178 default 0 if FOOTBRIDGE || ARCH_IOP32X 1179 default 2 1180 1181config DEBUG_UART_8250_WORD 1182 bool "Use 32-bit accesses for 8250 UART" 1183 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 1184 depends on DEBUG_UART_8250_SHIFT >= 2 1185 default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \ 1186 ARCH_KEYSTONE || \ 1187 DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \ 1188 DEBUG_DAVINCI_DA8XX_UART2 || \ 1189 DEBUG_BCM_KONA_UART 1190 1191config DEBUG_UART_8250_FLOW_CONTROL 1192 bool "Enable flow control for 8250 UART" 1193 depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 1194 default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC 1195 1196config DEBUG_UNCOMPRESS 1197 bool 1198 depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG 1199 default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \ 1200 (!DEBUG_TEGRA_UART || !ZBOOT_ROM) 1201 help 1202 This option influences the normal decompressor output for 1203 multiplatform kernels. Normally, multiplatform kernels disable 1204 decompressor output because it is not possible to know where to 1205 send the decompressor output. 1206 1207 When this option is set, the selected DEBUG_LL output method 1208 will be re-used for normal decompressor output on multiplatform 1209 kernels. 1210 1211 1212config UNCOMPRESS_INCLUDE 1213 string 1214 default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \ 1215 PLAT_SAMSUNG || ARCH_EFM32 1216 default "mach/uncompress.h" 1217 1218config EARLY_PRINTK 1219 bool "Early printk" 1220 depends on DEBUG_LL 1221 help 1222 Say Y here if you want to have an early console using the 1223 kernel low-level debugging functions. Add earlyprintk to your 1224 kernel parameters to enable this console. 1225 1226config OC_ETM 1227 bool "On-chip ETM and ETB" 1228 depends on ARM_AMBA 1229 help 1230 Enables the on-chip embedded trace macrocell and embedded trace 1231 buffer driver that will allow you to collect traces of the 1232 kernel code. 1233 1234config ARM_KPROBES_TEST 1235 tristate "Kprobes test module" 1236 depends on KPROBES && MODULES 1237 help 1238 Perform tests of kprobes API and instruction set simulation. 1239 1240config PID_IN_CONTEXTIDR 1241 bool "Write the current PID to the CONTEXTIDR register" 1242 depends on CPU_COPY_V6 1243 help 1244 Enabling this option causes the kernel to write the current PID to 1245 the PROCID field of the CONTEXTIDR register, at the expense of some 1246 additional instructions during context switch. Say Y here only if you 1247 are planning to use hardware trace tools with this kernel. 1248 1249config DEBUG_SET_MODULE_RONX 1250 bool "Set loadable kernel module data as NX and text as RO" 1251 depends on MODULES 1252 ---help--- 1253 This option helps catch unintended modifications to loadable 1254 kernel module's text and read-only data. It also prevents execution 1255 of module data. Such protection may interfere with run-time code 1256 patching and dynamic kernel tracing - and they might also protect 1257 against certain classes of kernel exploits. 1258 If in doubt, say "N". 1259 1260endmenu 1261