11da177e4SLinus Torvaldsmenu "Kernel hacking" 21da177e4SLinus Torvalds 31da177e4SLinus Torvaldssource "lib/Kconfig.debug" 41da177e4SLinus Torvalds 51fd15b87SRussell Kingconfig ARM_PTDUMP 61fd15b87SRussell King bool "Export kernel pagetable layout to userspace via debugfs" 71fd15b87SRussell King depends on DEBUG_KERNEL 81fd15b87SRussell King select DEBUG_FS 91fd15b87SRussell King ---help--- 101fd15b87SRussell King Say Y here if you want to show the kernel pagetable layout in a 111fd15b87SRussell King debugfs file. This information is only useful for kernel developers 121fd15b87SRussell King who are working in architecture specific areas of the kernel. 131fd15b87SRussell King It is probably not a good idea to enable this feature in a production 141fd15b87SRussell King kernel. 151fd15b87SRussell King If in doubt, say "N" 161fd15b87SRussell King 17087aaffcSNicolas Pitreconfig STRICT_DEVMEM 18087aaffcSNicolas Pitre bool "Filter access to /dev/mem" 19087aaffcSNicolas Pitre depends on MMU 20087aaffcSNicolas Pitre ---help--- 21087aaffcSNicolas Pitre If this option is disabled, you allow userspace (root) access to all 22087aaffcSNicolas Pitre of memory, including kernel and userspace memory. Accidental 23087aaffcSNicolas Pitre access to this is obviously disastrous, but specific access can 24087aaffcSNicolas Pitre be used by people debugging the kernel. 25087aaffcSNicolas Pitre 26087aaffcSNicolas Pitre If this option is switched on, the /dev/mem file only allows 27087aaffcSNicolas Pitre userspace access to memory mapped peripherals. 28087aaffcSNicolas Pitre 29087aaffcSNicolas Pitre If in doubt, say Y. 30087aaffcSNicolas Pitre 31adf8b37bSCatalin Marinas# RMK wants arm kernels compiled with frame pointers or stack unwinding. 321da177e4SLinus Torvalds# If you know what you are doing and are willing to live without stack 331da177e4SLinus Torvalds# traces, you can get a slightly smaller kernel by setting this option to 341da177e4SLinus Torvalds# n, but then RMK will have to kill you ;). 351da177e4SLinus Torvaldsconfig FRAME_POINTER 361da177e4SLinus Torvalds bool 3716c79651SCatalin Marinas depends on !THUMB2_KERNEL 380e341af8SRabin Vincent default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER 391da177e4SLinus Torvalds help 401da177e4SLinus Torvalds If you say N here, the resulting kernel will be slightly smaller and 41adf8b37bSCatalin Marinas faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled, 42adf8b37bSCatalin Marinas when a problem occurs with the kernel, the information that is 43adf8b37bSCatalin Marinas reported is severely limited. 44adf8b37bSCatalin Marinas 45adf8b37bSCatalin Marinasconfig ARM_UNWIND 464a50bfe3SRussell King bool "Enable stack unwinding support (EXPERIMENTAL)" 47d6f94fa0SKees Cook depends on AEABI 48adf8b37bSCatalin Marinas default y 49adf8b37bSCatalin Marinas help 50adf8b37bSCatalin Marinas This option enables stack unwinding support in the kernel 51adf8b37bSCatalin Marinas using the information automatically generated by the 52adf8b37bSCatalin Marinas compiler. The resulting kernel image is slightly bigger but 53adf8b37bSCatalin Marinas the performance is not affected. Currently, this feature 54adf8b37bSCatalin Marinas only works with EABI compilers. If unsure say Y. 551da177e4SLinus Torvalds 5609bfafacSRabin Vincentconfig OLD_MCOUNT 5709bfafacSRabin Vincent bool 5809bfafacSRabin Vincent depends on FUNCTION_TRACER && FRAME_POINTER 5909bfafacSRabin Vincent default y 6009bfafacSRabin Vincent 611da177e4SLinus Torvaldsconfig DEBUG_USER 621da177e4SLinus Torvalds bool "Verbose user fault messages" 631da177e4SLinus Torvalds help 641da177e4SLinus Torvalds When a user program crashes due to an exception, the kernel can 651da177e4SLinus Torvalds print a brief message explaining what the problem was. This is 661da177e4SLinus Torvalds sometimes helpful for debugging but serves no purpose on a 671da177e4SLinus Torvalds production system. Most people should say N here. 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds In addition, you need to pass user_debug=N on the kernel command 701da177e4SLinus Torvalds line to enable this feature. N consists of the sum of: 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds 1 - undefined instruction events 731da177e4SLinus Torvalds 2 - system calls 741da177e4SLinus Torvalds 4 - invalid data aborts 751da177e4SLinus Torvalds 8 - SIGSEGV faults 761da177e4SLinus Torvalds 16 - SIGBUS faults 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds# These options are only for real kernel hackers who want to get their hands dirty. 791da177e4SLinus Torvaldsconfig DEBUG_LL 804f5ef922SWill Deacon bool "Kernel low-level debugging functions (read help!)" 811da177e4SLinus Torvalds depends on DEBUG_KERNEL 821da177e4SLinus Torvalds help 8335efb606SRussell King Say Y here to include definitions of printascii, printch, printhex 841da177e4SLinus Torvalds in the kernel. This is helpful if you are debugging code that 851da177e4SLinus Torvalds executes before the console is initialized. 861da177e4SLinus Torvalds 874f5ef922SWill Deacon Note that selecting this option will limit the kernel to a single 884f5ef922SWill Deacon UART definition, as specified below. Attempting to boot the kernel 894f5ef922SWill Deacon image on a different platform *will not work*, so this option should 904f5ef922SWill Deacon not be enabled for kernels that are intended to be portable. 914f5ef922SWill Deacon 9217916b28SWill Deaconchoice 9317916b28SWill Deacon prompt "Kernel low-level debugging port" 9417916b28SWill Deacon depends on DEBUG_LL 9517916b28SWill Deacon 9613079a73SJean-Christophe PLAGNIOL-VILLARD config AT91_DEBUG_LL_DBGU0 9713079a73SJean-Christophe PLAGNIOL-VILLARD bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl" 9813079a73SJean-Christophe PLAGNIOL-VILLARD depends on HAVE_AT91_DBGU0 9913079a73SJean-Christophe PLAGNIOL-VILLARD 10013079a73SJean-Christophe PLAGNIOL-VILLARD config AT91_DEBUG_LL_DBGU1 1019918ceafSJean-Christophe PLAGNIOL-VILLARD bool "Kernel low-level debugging on 9263 and 9g45" 10213079a73SJean-Christophe PLAGNIOL-VILLARD depends on HAVE_AT91_DBGU1 10313079a73SJean-Christophe PLAGNIOL-VILLARD 104f1ac922dSStephen Warren config DEBUG_BCM2835 105f1ac922dSStephen Warren bool "Kernel low-level debugging on BCM2835 PL011 UART" 106f1ac922dSStephen Warren depends on ARCH_BCM2835 1075c972af4SRussell King select DEBUG_UART_PL01X 108f1ac922dSStephen Warren 10906580275SHauke Mehrtens config DEBUG_BCM_5301X 11006580275SHauke Mehrtens bool "Kernel low-level debugging on BCM5301X UART1" 11106580275SHauke Mehrtens depends on ARCH_BCM_5301X 11206580275SHauke Mehrtens select DEBUG_UART_PL01X 11306580275SHauke Mehrtens 114753d1243SChristian Daudt config DEBUG_BCM_KONA_UART 115753d1243SChristian Daudt bool "Kernel low-level debugging messages via BCM KONA UART" 1167aa2077bSFlorian Fainelli depends on ARCH_BCM_MOBILE 117753d1243SChristian Daudt select DEBUG_UART_8250 118753d1243SChristian Daudt help 119753d1243SChristian Daudt Say Y here if you want kernel low-level debugging support 120753d1243SChristian Daudt on Broadcom SoC platforms. 121753d1243SChristian Daudt This low level debug works for Broadcom 122753d1243SChristian Daudt mobile SoCs in the Kona family of chips (e.g. bcm28155, 123753d1243SChristian Daudt bcm11351, etc...) 124753d1243SChristian Daudt 125caad0b41SSebastian Hesselbarth config DEBUG_BERLIN_UART 126caad0b41SSebastian Hesselbarth bool "Marvell Berlin SoC Debug UART" 127caad0b41SSebastian Hesselbarth depends on ARCH_BERLIN 128caad0b41SSebastian Hesselbarth select DEBUG_UART_8250 129caad0b41SSebastian Hesselbarth help 130caad0b41SSebastian Hesselbarth Say Y here if you want kernel low-level debugging support 131caad0b41SSebastian Hesselbarth on Marvell Berlin SoC based platforms. 132caad0b41SSebastian Hesselbarth 133164acf96SStephen Boyd config DEBUG_CLPS711X_UART1 134164acf96SStephen Boyd bool "Kernel low-level debugging messages via UART1" 135164acf96SStephen Boyd depends on ARCH_CLPS711X 136164acf96SStephen Boyd help 137164acf96SStephen Boyd Say Y here if you want the debug print routines to direct 138164acf96SStephen Boyd their output to the first serial port on these devices. 13917916b28SWill Deacon 14017916b28SWill Deacon config DEBUG_CLPS711X_UART2 14117916b28SWill Deacon bool "Kernel low-level debugging messages via UART2" 14217916b28SWill Deacon depends on ARCH_CLPS711X 14317916b28SWill Deacon help 14417916b28SWill Deacon Say Y here if you want the debug print routines to direct 14517916b28SWill Deacon their output to the second serial port on these devices. 14617916b28SWill Deacon 14729c9b7beSArnd Bergmann config DEBUG_CNS3XXX 14829c9b7beSArnd Bergmann bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx" 14929c9b7beSArnd Bergmann depends on ARCH_CNS3XXX 1505c972af4SRussell King select DEBUG_UART_PL01X 15129c9b7beSArnd Bergmann help 15229c9b7beSArnd Bergmann Say Y here if you want the debug print routines to direct 15329c9b7beSArnd Bergmann their output to the CNS3xxx UART0. 15429c9b7beSArnd Bergmann 155477099f1SUwe Kleine-König config DEBUG_DAVINCI_DA8XX_UART1 156477099f1SUwe Kleine-König bool "Kernel low-level debugging on DaVinci DA8XX using UART1" 157477099f1SUwe Kleine-König depends on ARCH_DAVINCI_DA8XX 15897bd1a48SRussell King select DEBUG_UART_8250 159477099f1SUwe Kleine-König help 160477099f1SUwe Kleine-König Say Y here if you want the debug print routines to direct 161477099f1SUwe Kleine-König their output to UART1 serial port on DaVinci DA8XX devices. 162477099f1SUwe Kleine-König 163477099f1SUwe Kleine-König config DEBUG_DAVINCI_DA8XX_UART2 164477099f1SUwe Kleine-König bool "Kernel low-level debugging on DaVinci DA8XX using UART2" 165477099f1SUwe Kleine-König depends on ARCH_DAVINCI_DA8XX 16697bd1a48SRussell King select DEBUG_UART_8250 167477099f1SUwe Kleine-König help 168477099f1SUwe Kleine-König Say Y here if you want the debug print routines to direct 169477099f1SUwe Kleine-König their output to UART2 serial port on DaVinci DA8XX devices. 170477099f1SUwe Kleine-König 171477099f1SUwe Kleine-König config DEBUG_DAVINCI_DMx_UART0 172477099f1SUwe Kleine-König bool "Kernel low-level debugging on DaVinci DMx using UART0" 173477099f1SUwe Kleine-König depends on ARCH_DAVINCI_DMx 17497bd1a48SRussell King select DEBUG_UART_8250 175477099f1SUwe Kleine-König help 176477099f1SUwe Kleine-König Say Y here if you want the debug print routines to direct 177477099f1SUwe Kleine-König their output to UART0 serial port on DaVinci DMx devices. 178477099f1SUwe Kleine-König 179aaf5e0beSNick Bowler config DEBUG_ZYNQ_UART0 180aaf5e0beSNick Bowler bool "Kernel low-level debugging on Xilinx Zynq using UART0" 181aaf5e0beSNick Bowler depends on ARCH_ZYNQ 182aaf5e0beSNick Bowler help 183aaf5e0beSNick Bowler Say Y here if you want the debug print routines to direct 184aaf5e0beSNick Bowler their output to UART0 on the Zynq platform. 185aaf5e0beSNick Bowler 186aaf5e0beSNick Bowler config DEBUG_ZYNQ_UART1 187aaf5e0beSNick Bowler bool "Kernel low-level debugging on Xilinx Zynq using UART1" 188aaf5e0beSNick Bowler depends on ARCH_ZYNQ 189aaf5e0beSNick Bowler help 190aaf5e0beSNick Bowler Say Y here if you want the debug print routines to direct 191aaf5e0beSNick Bowler their output to UART1 on the Zynq platform. 192aaf5e0beSNick Bowler 193aaf5e0beSNick Bowler If you have a ZC702 board and want early boot messages to 194aaf5e0beSNick Bowler appear on the USB serial adaptor, select this option. 195aaf5e0beSNick Bowler 196e76f4750SRussell King config DEBUG_DC21285_PORT 197e76f4750SRussell King bool "Kernel low-level debugging messages via footbridge serial port" 198e76f4750SRussell King depends on FOOTBRIDGE 199e76f4750SRussell King help 200e76f4750SRussell King Say Y here if you want the debug print routines to direct 201e76f4750SRussell King their output to the serial port in the DC21285 (Footbridge). 202e76f4750SRussell King 203e76f4750SRussell King config DEBUG_FOOTBRIDGE_COM1 204e76f4750SRussell King bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" 205e76f4750SRussell King depends on FOOTBRIDGE 206e76f4750SRussell King help 207e76f4750SRussell King Say Y here if you want the debug print routines to direct 208e76f4750SRussell King their output to the 8250 at PCI COM1. 209e76f4750SRussell King 2108d258bebSHaojian Zhuang config DEBUG_HI3620_UART 2118d258bebSHaojian Zhuang bool "Hisilicon HI3620 Debug UART" 2128d258bebSHaojian Zhuang depends on ARCH_HI3xxx 2138d258bebSHaojian Zhuang select DEBUG_UART_PL01X 2148d258bebSHaojian Zhuang help 2158d258bebSHaojian Zhuang Say Y here if you want kernel low-level debugging support 2168d258bebSHaojian Zhuang on HI3620 UART. 2178d258bebSHaojian Zhuang 2188d258bebSHaojian Zhuang config DEBUG_HI3716_UART 2198d258bebSHaojian Zhuang bool "Hisilicon Hi3716 Debug UART" 2208d258bebSHaojian Zhuang depends on ARCH_HI3xxx 2218d258bebSHaojian Zhuang select DEBUG_UART_PL01X 2228d258bebSHaojian Zhuang help 2238d258bebSHaojian Zhuang Say Y here if you want kernel low-level debugging support 2248d258bebSHaojian Zhuang on HI3716 UART. 2258d258bebSHaojian Zhuang 226220e6cf7SRob Herring config DEBUG_HIGHBANK_UART 227220e6cf7SRob Herring bool "Kernel low-level debugging messages via Highbank UART" 228220e6cf7SRob Herring depends on ARCH_HIGHBANK 2295c972af4SRussell King select DEBUG_UART_PL01X 230220e6cf7SRob Herring help 231220e6cf7SRob Herring Say Y here if you want the debug print routines to direct 232220e6cf7SRob Herring their output to the UART on Highbank based devices. 233220e6cf7SRob Herring 234f350b861SShawn Guo config DEBUG_IMX1_UART 235f350b861SShawn Guo bool "i.MX1 Debug UART" 236f350b861SShawn Guo depends on SOC_IMX1 237f350b861SShawn Guo help 238f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 239f350b861SShawn Guo on i.MX1. 240f350b861SShawn Guo 241f350b861SShawn Guo config DEBUG_IMX23_UART 242f350b861SShawn Guo bool "i.MX23 Debug UART" 243f350b861SShawn Guo depends on SOC_IMX23 2445c972af4SRussell King select DEBUG_UART_PL01X 245f350b861SShawn Guo help 246f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 247f350b861SShawn Guo on i.MX23. 248f350b861SShawn Guo 249f350b861SShawn Guo config DEBUG_IMX25_UART 250f350b861SShawn Guo bool "i.MX25 Debug UART" 251f350b861SShawn Guo depends on SOC_IMX25 252f350b861SShawn Guo help 253f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 254f350b861SShawn Guo on i.MX25. 255f350b861SShawn Guo 256f350b861SShawn Guo config DEBUG_IMX21_IMX27_UART 257f350b861SShawn Guo bool "i.MX21 and i.MX27 Debug UART" 258f350b861SShawn Guo depends on SOC_IMX21 || SOC_IMX27 259f350b861SShawn Guo help 260f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 261f350b861SShawn Guo on i.MX21 or i.MX27. 262f350b861SShawn Guo 263f350b861SShawn Guo config DEBUG_IMX28_UART 264f350b861SShawn Guo bool "i.MX28 Debug UART" 265f350b861SShawn Guo depends on SOC_IMX28 2665c972af4SRussell King select DEBUG_UART_PL01X 267f350b861SShawn Guo help 268f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 269f350b861SShawn Guo on i.MX28. 270f350b861SShawn Guo 2714ad625d4SShawn Guo config DEBUG_IMX31_UART 2724ad625d4SShawn Guo bool "i.MX31 Debug UART" 2734ad625d4SShawn Guo depends on SOC_IMX31 274f350b861SShawn Guo help 275f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 2764ad625d4SShawn Guo on i.MX31. 2774ad625d4SShawn Guo 2784ad625d4SShawn Guo config DEBUG_IMX35_UART 2794ad625d4SShawn Guo bool "i.MX35 Debug UART" 2804ad625d4SShawn Guo depends on SOC_IMX35 2814ad625d4SShawn Guo help 2824ad625d4SShawn Guo Say Y here if you want kernel low-level debugging support 2834ad625d4SShawn Guo on i.MX35. 284f350b861SShawn Guo 285ad364a70SGreg Ungerer config DEBUG_IMX50_UART 286ad364a70SGreg Ungerer bool "i.MX50 Debug UART" 287ad364a70SGreg Ungerer depends on SOC_IMX50 288ad364a70SGreg Ungerer help 289ad364a70SGreg Ungerer Say Y here if you want kernel low-level debugging support 290ad364a70SGreg Ungerer on i.MX50. 291ad364a70SGreg Ungerer 292f350b861SShawn Guo config DEBUG_IMX51_UART 293f350b861SShawn Guo bool "i.MX51 Debug UART" 294f350b861SShawn Guo depends on SOC_IMX51 295f350b861SShawn Guo help 296f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 297f350b861SShawn Guo on i.MX51. 298f350b861SShawn Guo 2997356420cSFabio Estevam config DEBUG_IMX53_UART 3007356420cSFabio Estevam bool "i.MX53 Debug UART" 3017356420cSFabio Estevam depends on SOC_IMX53 302f350b861SShawn Guo help 303f350b861SShawn Guo Say Y here if you want kernel low-level debugging support 3047356420cSFabio Estevam on i.MX53. 305f350b861SShawn Guo 30649c9e60eSShawn Guo config DEBUG_IMX6Q_UART 3073c03a2feSShawn Guo bool "i.MX6Q/DL Debug UART" 308785d7fabSDirk Behme depends on SOC_IMX6Q 309785d7fabSDirk Behme help 310785d7fabSDirk Behme Say Y here if you want kernel low-level debugging support 3113c03a2feSShawn Guo on i.MX6Q/DL. 312bac89d75SShawn Guo 31334e8a16bSShawn Guo config DEBUG_IMX6SL_UART 31434e8a16bSShawn Guo bool "i.MX6SL Debug UART" 31534e8a16bSShawn Guo depends on SOC_IMX6SL 31634e8a16bSShawn Guo help 31734e8a16bSShawn Guo Say Y here if you want kernel low-level debugging support 31834e8a16bSShawn Guo on i.MX6SL. 31934e8a16bSShawn Guo 320828989adSSantosh Shilimkar config DEBUG_KEYSTONE_UART0 321828989adSSantosh Shilimkar bool "Kernel low-level debugging on KEYSTONE2 using UART0" 322828989adSSantosh Shilimkar depends on ARCH_KEYSTONE 323f2acf003SRussell King select DEBUG_UART_8250 324828989adSSantosh Shilimkar help 325828989adSSantosh Shilimkar Say Y here if you want the debug print routines to direct 326828989adSSantosh Shilimkar their output to UART0 serial port on KEYSTONE2 devices. 327828989adSSantosh Shilimkar 328828989adSSantosh Shilimkar config DEBUG_KEYSTONE_UART1 329828989adSSantosh Shilimkar bool "Kernel low-level debugging on KEYSTONE2 using UART1" 330828989adSSantosh Shilimkar depends on ARCH_KEYSTONE 331f2acf003SRussell King select DEBUG_UART_8250 332828989adSSantosh Shilimkar help 333828989adSSantosh Shilimkar Say Y here if you want the debug print routines to direct 334828989adSSantosh Shilimkar their output to UART1 serial port on KEYSTONE2 devices. 335828989adSSantosh Shilimkar 336fa4cd2a8SHaojian Zhuang config DEBUG_MMP_UART2 337fa4cd2a8SHaojian Zhuang bool "Kernel low-level debugging message via MMP UART2" 338fa4cd2a8SHaojian Zhuang depends on ARCH_MMP 3394a003647SRussell King select DEBUG_UART_8250 340fa4cd2a8SHaojian Zhuang help 341fa4cd2a8SHaojian Zhuang Say Y here if you want kernel low-level debugging support 342fa4cd2a8SHaojian Zhuang on MMP UART2. 343fa4cd2a8SHaojian Zhuang 344fa4cd2a8SHaojian Zhuang config DEBUG_MMP_UART3 345fa4cd2a8SHaojian Zhuang bool "Kernel low-level debugging message via MMP UART3" 346fa4cd2a8SHaojian Zhuang depends on ARCH_MMP 3474a003647SRussell King select DEBUG_UART_8250 348fa4cd2a8SHaojian Zhuang help 349fa4cd2a8SHaojian Zhuang Say Y here if you want kernel low-level debugging support 350fa4cd2a8SHaojian Zhuang on MMP UART3. 351fa4cd2a8SHaojian Zhuang 352650e3f0dSStephen Boyd config DEBUG_MSM_UART1 353650e3f0dSStephen Boyd bool "Kernel low-level debugging messages via MSM UART1" 354650e3f0dSStephen Boyd depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 355c527c3b9SRohit Vaswani select DEBUG_MSM_UART 356650e3f0dSStephen Boyd help 357650e3f0dSStephen Boyd Say Y here if you want the debug print routines to direct 358650e3f0dSStephen Boyd their output to the first serial port on MSM devices. 359650e3f0dSStephen Boyd 360650e3f0dSStephen Boyd config DEBUG_MSM_UART2 361650e3f0dSStephen Boyd bool "Kernel low-level debugging messages via MSM UART2" 362650e3f0dSStephen Boyd depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 363c527c3b9SRohit Vaswani select DEBUG_MSM_UART 364650e3f0dSStephen Boyd help 365650e3f0dSStephen Boyd Say Y here if you want the debug print routines to direct 366650e3f0dSStephen Boyd their output to the second serial port on MSM devices. 367650e3f0dSStephen Boyd 368650e3f0dSStephen Boyd config DEBUG_MSM_UART3 369650e3f0dSStephen Boyd bool "Kernel low-level debugging messages via MSM UART3" 370650e3f0dSStephen Boyd depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50 371c527c3b9SRohit Vaswani select DEBUG_MSM_UART 372650e3f0dSStephen Boyd help 373650e3f0dSStephen Boyd Say Y here if you want the debug print routines to direct 374650e3f0dSStephen Boyd their output to the third serial port on MSM devices. 375650e3f0dSStephen Boyd 376a3d3ef9dSStephen Boyd config DEBUG_MSM8660_UART 377a3d3ef9dSStephen Boyd bool "Kernel low-level debugging messages via MSM 8660 UART" 378a3d3ef9dSStephen Boyd depends on ARCH_MSM8X60 379a3d3ef9dSStephen Boyd select MSM_HAS_DEBUG_UART_HS 380c527c3b9SRohit Vaswani select DEBUG_MSM_UART 381a3d3ef9dSStephen Boyd help 382a3d3ef9dSStephen Boyd Say Y here if you want the debug print routines to direct 383a3d3ef9dSStephen Boyd their output to the serial port on MSM 8660 devices. 384a3d3ef9dSStephen Boyd 385a3d3ef9dSStephen Boyd config DEBUG_MSM8960_UART 386a3d3ef9dSStephen Boyd bool "Kernel low-level debugging messages via MSM 8960 UART" 387a3d3ef9dSStephen Boyd depends on ARCH_MSM8960 388a3d3ef9dSStephen Boyd select MSM_HAS_DEBUG_UART_HS 389c527c3b9SRohit Vaswani select DEBUG_MSM_UART 390a3d3ef9dSStephen Boyd help 391a3d3ef9dSStephen Boyd Say Y here if you want the debug print routines to direct 392a3d3ef9dSStephen Boyd their output to the serial port on MSM 8960 devices. 393a3d3ef9dSStephen Boyd 3943c8828f6SRohit Vaswani config DEBUG_MSM8974_UART 3953c8828f6SRohit Vaswani bool "Kernel low-level debugging messages via MSM 8974 UART" 3963c8828f6SRohit Vaswani depends on ARCH_MSM8974 3973c8828f6SRohit Vaswani select MSM_HAS_DEBUG_UART_HS 3983c8828f6SRohit Vaswani select DEBUG_MSM_UART 3993c8828f6SRohit Vaswani help 4003c8828f6SRohit Vaswani Say Y here if you want the debug print routines to direct 4013c8828f6SRohit Vaswani their output to the serial port on MSM 8974 devices. 4023c8828f6SRohit Vaswani 403bfd5af99SRob Herring config DEBUG_MVEBU_UART 404c2804cd6SThomas Petazzoni bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)" 405bfd5af99SRob Herring depends on ARCH_MVEBU 4064a003647SRussell King select DEBUG_UART_8250 407bfd5af99SRob Herring help 408bfd5af99SRob Herring Say Y here if you want kernel low-level debugging support 409bfd5af99SRob Herring on MVEBU based platforms. 410bfd5af99SRob Herring 411c2804cd6SThomas Petazzoni This option should be used with the old bootloaders 412c2804cd6SThomas Petazzoni that left the internal registers mapped at 413c2804cd6SThomas Petazzoni 0xd0000000. As of today, this is the case on 414c2804cd6SThomas Petazzoni platforms such as the Globalscale Mirabox or the 415c2804cd6SThomas Petazzoni Plathome OpenBlocks AX3, when using the original 416c2804cd6SThomas Petazzoni bootloader. 417c2804cd6SThomas Petazzoni 418c2804cd6SThomas Petazzoni If the wrong DEBUG_MVEBU_UART* option is selected, 419c2804cd6SThomas Petazzoni when u-boot hands over to the kernel, the system 420c2804cd6SThomas Petazzoni silently crashes, with no serial output at all. 421c2804cd6SThomas Petazzoni 422c2804cd6SThomas Petazzoni config DEBUG_MVEBU_UART_ALTERNATE 423c2804cd6SThomas Petazzoni bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)" 424c2804cd6SThomas Petazzoni depends on ARCH_MVEBU 4254a003647SRussell King select DEBUG_UART_8250 426c2804cd6SThomas Petazzoni help 427c2804cd6SThomas Petazzoni Say Y here if you want kernel low-level debugging support 428c2804cd6SThomas Petazzoni on MVEBU based platforms. 429c2804cd6SThomas Petazzoni 430c2804cd6SThomas Petazzoni This option should be used with the new bootloaders 431c2804cd6SThomas Petazzoni that remap the internal registers at 0xf1000000. 432c2804cd6SThomas Petazzoni 433c2804cd6SThomas Petazzoni If the wrong DEBUG_MVEBU_UART* option is selected, 434c2804cd6SThomas Petazzoni when u-boot hands over to the kernel, the system 435c2804cd6SThomas Petazzoni silently crashes, with no serial output at all. 436c2804cd6SThomas Petazzoni 437c7c3eac6SShawn Guo config DEBUG_VF_UART 438c7c3eac6SShawn Guo bool "Vybrid UART" 439c7c3eac6SShawn Guo depends on SOC_VF610 440c7c3eac6SShawn Guo help 441c7c3eac6SShawn Guo Say Y here if you want kernel low-level debugging support 442c7c3eac6SShawn Guo on Vybrid based platforms. 443c7c3eac6SShawn Guo 444266c3479SLinus Walleij config DEBUG_NOMADIK_UART 445266c3479SLinus Walleij bool "Kernel low-level debugging messages via NOMADIK UART" 446266c3479SLinus Walleij depends on ARCH_NOMADIK 4475c972af4SRussell King select DEBUG_UART_PL01X 448266c3479SLinus Walleij help 449266c3479SLinus Walleij Say Y here if you want kernel low-level debugging support 450266c3479SLinus Walleij on NOMADIK based platforms. 451266c3479SLinus Walleij 4529851ca57SDaniel Tang config DEBUG_NSPIRE_CLASSIC_UART 4539851ca57SDaniel Tang bool "Kernel low-level debugging via TI-NSPIRE 8250 UART" 4549851ca57SDaniel Tang depends on ARCH_NSPIRE 4554a003647SRussell King select DEBUG_UART_8250 4569851ca57SDaniel Tang help 4579851ca57SDaniel Tang Say Y here if you want kernel low-level debugging support 4589851ca57SDaniel Tang on TI-NSPIRE classic models. 4599851ca57SDaniel Tang 4609851ca57SDaniel Tang config DEBUG_NSPIRE_CX_UART 4619851ca57SDaniel Tang bool "Kernel low-level debugging via TI-NSPIRE PL011 UART" 4629851ca57SDaniel Tang depends on ARCH_NSPIRE 4635c972af4SRussell King select DEBUG_UART_PL01X 4649851ca57SDaniel Tang help 4659851ca57SDaniel Tang Say Y here if you want kernel low-level debugging support 4669851ca57SDaniel Tang on TI-NSPIRE CX models. 4679851ca57SDaniel Tang 468cce278d2SRussell King config DEBUG_OMAP2UART1 469cce278d2SRussell King bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" 470808b7e07STony Lindgren depends on ARCH_OMAP2PLUS 471cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 472808b7e07STony Lindgren help 473cce278d2SRussell King This covers at least h4, 2430sdp, 3430sdp, 3630sdp, 474cce278d2SRussell King omap3 torpedo and 3530 lv som. 475cce278d2SRussell King 476cce278d2SRussell King config DEBUG_OMAP2UART2 477cce278d2SRussell King bool "Kernel low-level debugging messages via OMAP2/3/4 UART2" 478cce278d2SRussell King depends on ARCH_OMAP2PLUS 479cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 480cce278d2SRussell King 481cce278d2SRussell King config DEBUG_OMAP2UART3 482cce278d2SRussell King bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)" 483cce278d2SRussell King depends on ARCH_OMAP2PLUS 484cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 485cce278d2SRussell King 486cce278d2SRussell King config DEBUG_OMAP3UART3 487cce278d2SRussell King bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)" 488cce278d2SRussell King depends on ARCH_OMAP2PLUS 489cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 490cce278d2SRussell King help 491cce278d2SRussell King This covers at least cm_t3x, beagle, crane, devkit8000, 492cce278d2SRussell King igep00x0, ldp, n900, n9(50), pandora, overo, touchbook, 493cce278d2SRussell King and 3517evm. 494cce278d2SRussell King 495cce278d2SRussell King config DEBUG_OMAP4UART3 496cce278d2SRussell King bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)" 497cce278d2SRussell King depends on ARCH_OMAP2PLUS 498cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 499cce278d2SRussell King 500cce278d2SRussell King config DEBUG_OMAP3UART4 501cce278d2SRussell King bool "Kernel low-level debugging messages via OMAP36XX UART4" 502cce278d2SRussell King depends on ARCH_OMAP2PLUS 503cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 504cce278d2SRussell King 505cce278d2SRussell King config DEBUG_OMAP4UART4 506cce278d2SRussell King bool "Kernel low-level debugging messages via OMAP4/5 UART4" 507cce278d2SRussell King depends on ARCH_OMAP2PLUS 508cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 509cce278d2SRussell King 510cce278d2SRussell King config DEBUG_TI81XXUART1 511cce278d2SRussell King bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)" 512cce278d2SRussell King depends on ARCH_OMAP2PLUS 513cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 514cce278d2SRussell King 515cce278d2SRussell King config DEBUG_TI81XXUART2 516cce278d2SRussell King bool "Kernel low-level debugging messages via TI81XX UART2" 517cce278d2SRussell King depends on ARCH_OMAP2PLUS 518cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 519cce278d2SRussell King 520cce278d2SRussell King config DEBUG_TI81XXUART3 521cce278d2SRussell King bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)" 522cce278d2SRussell King depends on ARCH_OMAP2PLUS 523cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 524cce278d2SRussell King 525cce278d2SRussell King config DEBUG_AM33XXUART1 526cce278d2SRussell King bool "Kernel low-level debugging messages via AM33XX UART1" 527cce278d2SRussell King depends on ARCH_OMAP2PLUS 528cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 529cce278d2SRussell King 530cce278d2SRussell King config DEBUG_ZOOM_UART 531cce278d2SRussell King bool "Kernel low-level debugging messages via Zoom2/3 UART" 532cce278d2SRussell King depends on ARCH_OMAP2PLUS 533cce278d2SRussell King select DEBUG_OMAP2PLUS_UART 534808b7e07STony Lindgren 53559bba2a9SRob Herring config DEBUG_PICOXCELL_UART 53659bba2a9SRob Herring depends on ARCH_PICOXCELL 53759bba2a9SRob Herring bool "Use PicoXcell UART for low-level debug" 5380b4cccbeSRussell King select DEBUG_UART_8250 53959bba2a9SRob Herring help 54059bba2a9SRob Herring Say Y here if you want kernel low-level debugging support 54159bba2a9SRob Herring on PicoXcell based platforms. 54259bba2a9SRob Herring 5430a43cd3bSHaojian Zhuang config DEBUG_PXA_UART1 5440a43cd3bSHaojian Zhuang depends on ARCH_PXA 5450a43cd3bSHaojian Zhuang bool "Use PXA UART1 for low-level debug" 5464a003647SRussell King select DEBUG_UART_8250 5470a43cd3bSHaojian Zhuang help 5480a43cd3bSHaojian Zhuang Say Y here if you want kernel low-level debugging support 5490a43cd3bSHaojian Zhuang on PXA UART1. 5500a43cd3bSHaojian Zhuang 551e76f4750SRussell King config DEBUG_REALVIEW_STD_PORT 552e76f4750SRussell King bool "RealView Default UART" 553e76f4750SRussell King depends on ARCH_REALVIEW 5545c972af4SRussell King select DEBUG_UART_PL01X 555e76f4750SRussell King help 556e76f4750SRussell King Say Y here if you want the debug print routines to direct 557e76f4750SRussell King their output to the serial port on RealView EB, PB11MP, PBA8 558e76f4750SRussell King and PBX platforms. 559e76f4750SRussell King 560e76f4750SRussell King config DEBUG_REALVIEW_PB1176_PORT 561e76f4750SRussell King bool "RealView PB1176 UART" 562e76f4750SRussell King depends on MACH_REALVIEW_PB1176 5635c972af4SRussell King select DEBUG_UART_PL01X 564e76f4750SRussell King help 565e76f4750SRussell King Say Y here if you want the debug print routines to direct 566e76f4750SRussell King their output to the standard serial port on the RealView 567e76f4750SRussell King PB1176 platform. 568e76f4750SRussell King 569cce278d2SRussell King config DEBUG_RK29_UART0 570cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK29 UART0" 57138bd6892SHeiko Stuebner depends on ARCH_ROCKCHIP 5724a003647SRussell King select DEBUG_UART_8250 573cce278d2SRussell King help 574cce278d2SRussell King Say Y here if you want kernel low-level debugging support 575cce278d2SRussell King on Rockchip based platforms. 576cce278d2SRussell King 577cce278d2SRussell King config DEBUG_RK29_UART1 578cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK29 UART1" 579cce278d2SRussell King depends on ARCH_ROCKCHIP 5804a003647SRussell King select DEBUG_UART_8250 581cce278d2SRussell King help 582cce278d2SRussell King Say Y here if you want kernel low-level debugging support 583cce278d2SRussell King on Rockchip based platforms. 584cce278d2SRussell King 585cce278d2SRussell King config DEBUG_RK29_UART2 586cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK29 UART2" 587cce278d2SRussell King depends on ARCH_ROCKCHIP 5884a003647SRussell King select DEBUG_UART_8250 589cce278d2SRussell King help 590cce278d2SRussell King Say Y here if you want kernel low-level debugging support 591cce278d2SRussell King on Rockchip based platforms. 592cce278d2SRussell King 593cce278d2SRussell King config DEBUG_RK3X_UART0 594cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK3X UART0" 595cce278d2SRussell King depends on ARCH_ROCKCHIP 5964a003647SRussell King select DEBUG_UART_8250 597cce278d2SRussell King help 598cce278d2SRussell King Say Y here if you want kernel low-level debugging support 599cce278d2SRussell King on Rockchip based platforms. 600cce278d2SRussell King 601cce278d2SRussell King config DEBUG_RK3X_UART1 602cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK3X UART1" 603cce278d2SRussell King depends on ARCH_ROCKCHIP 6044a003647SRussell King select DEBUG_UART_8250 605cce278d2SRussell King help 606cce278d2SRussell King Say Y here if you want kernel low-level debugging support 607cce278d2SRussell King on Rockchip based platforms. 608cce278d2SRussell King 609cce278d2SRussell King config DEBUG_RK3X_UART2 610cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK3X UART2" 611cce278d2SRussell King depends on ARCH_ROCKCHIP 6124a003647SRussell King select DEBUG_UART_8250 613cce278d2SRussell King help 614cce278d2SRussell King Say Y here if you want kernel low-level debugging support 615cce278d2SRussell King on Rockchip based platforms. 616cce278d2SRussell King 617cce278d2SRussell King config DEBUG_RK3X_UART3 618cce278d2SRussell King bool "Kernel low-level debugging messages via Rockchip RK3X UART3" 619cce278d2SRussell King depends on ARCH_ROCKCHIP 6204a003647SRussell King select DEBUG_UART_8250 62138bd6892SHeiko Stuebner help 62238bd6892SHeiko Stuebner Say Y here if you want kernel low-level debugging support 62338bd6892SHeiko Stuebner on Rockchip based platforms. 62438bd6892SHeiko Stuebner 625e76f4750SRussell King config DEBUG_S3C_UART0 626e76f4750SRussell King depends on PLAT_SAMSUNG 627a2e40710SArnd Bergmann select DEBUG_EXYNOS_UART if ARCH_EXYNOS 628e76f4750SRussell King bool "Use S3C UART 0 for low-level debug" 629e76f4750SRussell King help 630e76f4750SRussell King Say Y here if you want the debug print routines to direct 631e76f4750SRussell King their output to UART 0. The port must have been initialised 632e76f4750SRussell King by the boot-loader before use. 633e76f4750SRussell King 634e76f4750SRussell King The uncompressor code port configuration is now handled 635e76f4750SRussell King by CONFIG_S3C_LOWLEVEL_UART_PORT. 636e76f4750SRussell King 637e76f4750SRussell King config DEBUG_S3C_UART1 638e76f4750SRussell King depends on PLAT_SAMSUNG 639a2e40710SArnd Bergmann select DEBUG_EXYNOS_UART if ARCH_EXYNOS 640e76f4750SRussell King bool "Use S3C UART 1 for low-level debug" 641e76f4750SRussell King help 642e76f4750SRussell King Say Y here if you want the debug print routines to direct 643e76f4750SRussell King their output to UART 1. The port must have been initialised 644e76f4750SRussell King by the boot-loader before use. 645e76f4750SRussell King 646e76f4750SRussell King The uncompressor code port configuration is now handled 647e76f4750SRussell King by CONFIG_S3C_LOWLEVEL_UART_PORT. 648e76f4750SRussell King 649e76f4750SRussell King config DEBUG_S3C_UART2 650e76f4750SRussell King depends on PLAT_SAMSUNG 651a2e40710SArnd Bergmann select DEBUG_EXYNOS_UART if ARCH_EXYNOS 652e76f4750SRussell King bool "Use S3C UART 2 for low-level debug" 653e76f4750SRussell King help 654e76f4750SRussell King Say Y here if you want the debug print routines to direct 655e76f4750SRussell King their output to UART 2. The port must have been initialised 656e76f4750SRussell King by the boot-loader before use. 657e76f4750SRussell King 658e76f4750SRussell King The uncompressor code port configuration is now handled 659e76f4750SRussell King by CONFIG_S3C_LOWLEVEL_UART_PORT. 660e76f4750SRussell King 6615fa23ddeSOlof Johansson config DEBUG_S3C_UART3 6625fa23ddeSOlof Johansson depends on PLAT_SAMSUNG && ARCH_EXYNOS 663a2e40710SArnd Bergmann select DEBUG_EXYNOS_UART 6645fa23ddeSOlof Johansson bool "Use S3C UART 3 for low-level debug" 6655fa23ddeSOlof Johansson help 6665fa23ddeSOlof Johansson Say Y here if you want the debug print routines to direct 6675fa23ddeSOlof Johansson their output to UART 3. The port must have been initialised 6685fa23ddeSOlof Johansson by the boot-loader before use. 6695fa23ddeSOlof Johansson 6705fa23ddeSOlof Johansson The uncompressor code port configuration is now handled 6715fa23ddeSOlof Johansson by CONFIG_S3C_LOWLEVEL_UART_PORT. 6725fa23ddeSOlof Johansson 6736111bf7cSRob Herring config DEBUG_SOCFPGA_UART 6746111bf7cSRob Herring depends on ARCH_SOCFPGA 6756111bf7cSRob Herring bool "Use SOCFPGA UART for low-level debug" 6760b4cccbeSRussell King select DEBUG_UART_8250 6776111bf7cSRob Herring help 6786111bf7cSRob Herring Say Y here if you want kernel low-level debugging support 6796111bf7cSRob Herring on SOCFPGA based platforms. 6806111bf7cSRob Herring 681aa25115aSStefan Roese config DEBUG_SUNXI_UART0 682aa25115aSStefan Roese bool "Kernel low-level debugging messages via sunXi UART0" 683aa25115aSStefan Roese depends on ARCH_SUNXI 6844a003647SRussell King select DEBUG_UART_8250 685aa25115aSStefan Roese help 686aa25115aSStefan Roese Say Y here if you want kernel low-level debugging support 687aa25115aSStefan Roese on Allwinner A1X based platforms on the UART0. 688aa25115aSStefan Roese 689cb84fa18SMaxime Ripard config DEBUG_SUNXI_UART1 690cb84fa18SMaxime Ripard bool "Kernel low-level debugging messages via sunXi UART1" 691cb84fa18SMaxime Ripard depends on ARCH_SUNXI 6924a003647SRussell King select DEBUG_UART_8250 693cb84fa18SMaxime Ripard help 694cb84fa18SMaxime Ripard Say Y here if you want kernel low-level debugging support 695cb84fa18SMaxime Ripard on Allwinner A1X based platforms on the UART1. 696cb84fa18SMaxime Ripard 697cce278d2SRussell King config TEGRA_DEBUG_UART_AUTO_ODMDATA 698cce278d2SRussell King bool "Kernel low-level debugging messages via Tegra UART via ODMDATA" 69946067803SStephen Warren depends on ARCH_TEGRA 700cce278d2SRussell King select DEBUG_TEGRA_UART 701cce278d2SRussell King help 702cce278d2SRussell King Automatically determines which UART to use for low-level 703cce278d2SRussell King debug based on the ODMDATA value. This value is part of 704cce278d2SRussell King the BCT, and is written to the boot memory device using 705cce278d2SRussell King nvflash, or other flashing tool. When bits 19:18 are 3, 706cce278d2SRussell King then bits 17:15 indicate which UART to use; 0/1/2/3/4 707cce278d2SRussell King are UART A/B/C/D/E. 708cce278d2SRussell King 709cce278d2SRussell King config TEGRA_DEBUG_UARTA 710cce278d2SRussell King bool "Kernel low-level debugging messages via Tegra UART A" 711cce278d2SRussell King depends on ARCH_TEGRA 712cce278d2SRussell King select DEBUG_TEGRA_UART 713cce278d2SRussell King help 714cce278d2SRussell King Say Y here if you want kernel low-level debugging support 715cce278d2SRussell King on Tegra based platforms. 716cce278d2SRussell King 717cce278d2SRussell King config TEGRA_DEBUG_UARTB 718cce278d2SRussell King bool "Kernel low-level debugging messages via Tegra UART B" 719cce278d2SRussell King depends on ARCH_TEGRA 720cce278d2SRussell King select DEBUG_TEGRA_UART 721cce278d2SRussell King help 722cce278d2SRussell King Say Y here if you want kernel low-level debugging support 723cce278d2SRussell King on Tegra based platforms. 724cce278d2SRussell King 725cce278d2SRussell King config TEGRA_DEBUG_UARTC 726cce278d2SRussell King bool "Kernel low-level debugging messages via Tegra UART C" 727cce278d2SRussell King depends on ARCH_TEGRA 728cce278d2SRussell King select DEBUG_TEGRA_UART 729cce278d2SRussell King help 730cce278d2SRussell King Say Y here if you want kernel low-level debugging support 731cce278d2SRussell King on Tegra based platforms. 732cce278d2SRussell King 733cce278d2SRussell King config TEGRA_DEBUG_UARTD 734cce278d2SRussell King bool "Kernel low-level debugging messages via Tegra UART D" 735cce278d2SRussell King depends on ARCH_TEGRA 736cce278d2SRussell King select DEBUG_TEGRA_UART 737cce278d2SRussell King help 738cce278d2SRussell King Say Y here if you want kernel low-level debugging support 739cce278d2SRussell King on Tegra based platforms. 740cce278d2SRussell King 741cce278d2SRussell King config TEGRA_DEBUG_UARTE 742cce278d2SRussell King bool "Kernel low-level debugging messages via Tegra UART E" 743cce278d2SRussell King depends on ARCH_TEGRA 744cce278d2SRussell King select DEBUG_TEGRA_UART 74546067803SStephen Warren help 74646067803SStephen Warren Say Y here if you want kernel low-level debugging support 74746067803SStephen Warren on Tegra based platforms. 74846067803SStephen Warren 7497f46a107SBarry Song config DEBUG_SIRFPRIMA2_UART1 7507f46a107SBarry Song bool "Kernel low-level debugging messages via SiRFprimaII UART1" 7517f46a107SBarry Song depends on ARCH_PRIMA2 7527f46a107SBarry Song help 7537f46a107SBarry Song Say Y here if you want the debug print routines to direct 7547f46a107SBarry Song their output to the uart1 port on SiRFprimaII devices. 7557f46a107SBarry Song 7567f46a107SBarry Song config DEBUG_SIRFMARCO_UART1 7577f46a107SBarry Song bool "Kernel low-level debugging messages via SiRFmarco UART1" 7587f46a107SBarry Song depends on ARCH_MARCO 7597f46a107SBarry Song help 7607f46a107SBarry Song Say Y here if you want the debug print routines to direct 7617f46a107SBarry Song their output to the uart1 port on SiRFmarco devices. 7627f46a107SBarry Song 763cce278d2SRussell King config STIH41X_DEBUG_ASC2 764cce278d2SRussell King bool "Use StiH415/416 ASC2 UART for low-level debug" 7655562b800SArnd Bergmann depends on ARCH_STI 766cce278d2SRussell King select DEBUG_STI_UART 7675562b800SArnd Bergmann help 7685562b800SArnd Bergmann Say Y here if you want kernel low-level debugging support 769cce278d2SRussell King on STiH415/416 based platforms like b2000, which has 770cce278d2SRussell King default UART wired up to ASC2. 771cce278d2SRussell King 772cce278d2SRussell King If unsure, say N. 773cce278d2SRussell King 774cce278d2SRussell King config STIH41X_DEBUG_SBC_ASC1 775cce278d2SRussell King bool "Use StiH415/416 SBC ASC1 UART for low-level debug" 776cce278d2SRussell King depends on ARCH_STI 777cce278d2SRussell King select DEBUG_STI_UART 778cce278d2SRussell King help 779cce278d2SRussell King Say Y here if you want kernel low-level debugging support 780cce278d2SRussell King on STiH415/416 based platforms like b2020. which has 781cce278d2SRussell King default UART wired up to SBC ASC1. 7825562b800SArnd Bergmann 7835562b800SArnd Bergmann If unsure, say N. 7845562b800SArnd Bergmann 785dd324da7SLinus Walleij config DEBUG_U300_UART 786dd324da7SLinus Walleij bool "Kernel low-level debugging messages via U300 UART0" 787dd324da7SLinus Walleij depends on ARCH_U300 7885c972af4SRussell King select DEBUG_UART_PL01X 789dd324da7SLinus Walleij help 790dd324da7SLinus Walleij Say Y here if you want the debug print routines to direct 791dd324da7SLinus Walleij their output to the uart port on U300 devices. 792dd324da7SLinus Walleij 793f87b95ddSLinus Walleij config DEBUG_UX500_UART 794f87b95ddSLinus Walleij depends on ARCH_U8500 795f87b95ddSLinus Walleij bool "Use Ux500 UART for low-level debug" 796f87b95ddSLinus Walleij help 797f87b95ddSLinus Walleij Say Y here if you want kernel low-level debugging support 798f87b95ddSLinus Walleij on Ux500 based platforms. 799f87b95ddSLinus Walleij 8001b820eafSPawel Moll config DEBUG_VEXPRESS_UART0_DETECT 8011b820eafSPawel Moll bool "Autodetect UART0 on Versatile Express Cortex-A core tiles" 8021b820eafSPawel Moll depends on ARCH_VEXPRESS && CPU_CP15_MMU 8031b820eafSPawel Moll help 8041b820eafSPawel Moll This option enables a simple heuristic which tries to determine 8051b820eafSPawel Moll the motherboard's memory map variant (original or RS1) and then 8061b820eafSPawel Moll choose the relevant UART0 base address. 8071b820eafSPawel Moll 8081b820eafSPawel Moll Note that this will only work with standard A-class core tiles, 8091b820eafSPawel Moll and may fail with non-standard SMM or custom software models. 8101b820eafSPawel Moll 8111b820eafSPawel Moll config DEBUG_VEXPRESS_UART0_CA9 8121b820eafSPawel Moll bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)" 8131b820eafSPawel Moll depends on ARCH_VEXPRESS 8145c972af4SRussell King select DEBUG_UART_PL01X 8151b820eafSPawel Moll help 8161b820eafSPawel Moll This option selects UART0 at 0x10009000. Except for custom models, 8171b820eafSPawel Moll this applies only to the V2P-CA9 tile. 8181b820eafSPawel Moll 8191b820eafSPawel Moll config DEBUG_VEXPRESS_UART0_RS1 8201b820eafSPawel Moll bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)" 8211b820eafSPawel Moll depends on ARCH_VEXPRESS 8225c972af4SRussell King select DEBUG_UART_PL01X 8231b820eafSPawel Moll help 8241b820eafSPawel Moll This option selects UART0 at 0x1c090000. This applies to most 8251b820eafSPawel Moll of the tiles using the RS1 memory map, including all new A-class 8261b820eafSPawel Moll core tiles, FPGA-based SMMs and software models. 8271b820eafSPawel Moll 828ed18bdc8SJonathan Austin config DEBUG_VEXPRESS_UART0_CRX 829ed18bdc8SJonathan Austin bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)" 830ed18bdc8SJonathan Austin depends on ARCH_VEXPRESS && !MMU 8315c972af4SRussell King select DEBUG_UART_PL01X 832ed18bdc8SJonathan Austin help 833ed18bdc8SJonathan Austin This option selects UART0 at 0xb0090000. This is appropriate for 834ed18bdc8SJonathan Austin Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7 835ed18bdc8SJonathan Austin 836b61a2722STony Prisk config DEBUG_VT8500_UART0 837b61a2722STony Prisk bool "Use UART0 on VIA/Wondermedia SoCs" 838b61a2722STony Prisk depends on ARCH_VT8500 839b61a2722STony Prisk help 840b61a2722STony Prisk This option selects UART0 on VIA/Wondermedia System-on-a-chip 841b61a2722STony Prisk devices, including VT8500, WM8505, WM8650 and WM8850. 842b61a2722STony Prisk 843e76f4750SRussell King config DEBUG_LL_UART_NONE 844e76f4750SRussell King bool "No low-level debugging UART" 845387798b3SRob Herring depends on !ARCH_MULTIPLATFORM 846e76f4750SRussell King help 847e76f4750SRussell King Say Y here if your platform doesn't provide a UART option 848730cc26fSRussell King above. This relies on your platform choosing the right UART 849e76f4750SRussell King definition internally in order for low-level debugging to 850e76f4750SRussell King work. 851e76f4750SRussell King 852e76f4750SRussell King config DEBUG_ICEDCC 853e76f4750SRussell King bool "Kernel low-level debugging via EmbeddedICE DCC channel" 854e76f4750SRussell King help 855e76f4750SRussell King Say Y here if you want the debug print routines to direct 856e76f4750SRussell King their output to the EmbeddedICE macrocell's DCC channel using 857e76f4750SRussell King co-processor 14. This is known to work on the ARM9 style ICE 858e76f4750SRussell King channel and on the XScale with the PEEDI. 859e76f4750SRussell King 860e76f4750SRussell King Note that the system will appear to hang during boot if there 861e76f4750SRussell King is nothing connected to read from the DCC. 862e76f4750SRussell King 863b0df8986SRussell King config DEBUG_SEMIHOSTING 86462194bdaSStephen Boyd bool "Kernel low-level debug output via semihosting I/O" 865b0df8986SRussell King help 866b0df8986SRussell King Semihosting enables code running on an ARM target to use 867b0df8986SRussell King the I/O facilities on a host debugger/emulator through a 86862194bdaSStephen Boyd simple SVC call. The host debugger or emulator must have 869b0df8986SRussell King semihosting enabled for the special svc call to be trapped 870b0df8986SRussell King otherwise the kernel will crash. 871b0df8986SRussell King 872b0df8986SRussell King This is known to work with OpenOCD, as well as 873b0df8986SRussell King ARM's Fast Models, or any other controlling environment 874b0df8986SRussell King that implements semihosting. 875b0df8986SRussell King 876b0df8986SRussell King For more details about semihosting, please see 877b0df8986SRussell King chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd. 878b0df8986SRussell King 879f8f1279cSRussell King config DEBUG_LL_UART_8250 880f8f1279cSRussell King bool "Kernel low-level debugging via 8250 UART" 881f8f1279cSRussell King help 882f8f1279cSRussell King Say Y here if you wish the debug print routes to direct 883f8f1279cSRussell King their output to an 8250 UART. You can use this option 884f8f1279cSRussell King to provide the parameters for the 8250 UART rather than 885f8f1279cSRussell King selecting one of the platform specific options above if 886f8f1279cSRussell King you know the parameters for the port. 887f8f1279cSRussell King 888f8f1279cSRussell King This option is preferred over the platform specific 889f8f1279cSRussell King options; the platform specific options are deprecated 890f8f1279cSRussell King and will be soon removed. 891f8f1279cSRussell King 892494e492dSUwe Kleine-König config DEBUG_LL_UART_EFM32 893494e492dSUwe Kleine-König bool "Kernel low-level debugging via efm32 UART" 894494e492dSUwe Kleine-König depends on ARCH_EFM32 895494e492dSUwe Kleine-König help 896494e492dSUwe Kleine-König Say Y here if you want the debug print routines to direct 897494e492dSUwe Kleine-König their output to an UART or USART port on efm32 based 898494e492dSUwe Kleine-König machines. Use the following addresses for DEBUG_UART_PHYS: 899494e492dSUwe Kleine-König 900494e492dSUwe Kleine-König 0x4000c000 | USART0 901494e492dSUwe Kleine-König 0x4000c400 | USART1 902494e492dSUwe Kleine-König 0x4000c800 | USART2 903494e492dSUwe Kleine-König 0x4000e000 | UART0 904494e492dSUwe Kleine-König 0x4000e400 | UART1 905494e492dSUwe Kleine-König 906f8f1279cSRussell King config DEBUG_LL_UART_PL01X 907f8f1279cSRussell King bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART" 908f8f1279cSRussell King help 909f8f1279cSRussell King Say Y here if you wish the debug print routes to direct 910f8f1279cSRussell King their output to a PL01x Primecell UART. You can use 911f8f1279cSRussell King this option to provide the parameters for the UART 912f8f1279cSRussell King rather than selecting one of the platform specific 913f8f1279cSRussell King options above if you know the parameters for the port. 914f8f1279cSRussell King 915f8f1279cSRussell King This option is preferred over the platform specific 916f8f1279cSRussell King options; the platform specific options are deprecated 917f8f1279cSRussell King and will be soon removed. 918f8f1279cSRussell King 91917916b28SWill Deaconendchoice 92017916b28SWill Deacon 921a2e40710SArnd Bergmannconfig DEBUG_EXYNOS_UART 922a2e40710SArnd Bergmann bool 923a2e40710SArnd Bergmann 924cce278d2SRussell Kingconfig DEBUG_OMAP2PLUS_UART 925cce278d2SRussell King bool 926cce278d2SRussell King depends on ARCH_OMAP2PLUS 927cce278d2SRussell King 928f8c95fe6SShawn Guoconfig DEBUG_IMX_UART_PORT 929f8c95fe6SShawn Guo int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \ 930f8c95fe6SShawn Guo DEBUG_IMX25_UART || \ 931f8c95fe6SShawn Guo DEBUG_IMX21_IMX27_UART || \ 932f8c95fe6SShawn Guo DEBUG_IMX31_UART || \ 933f8c95fe6SShawn Guo DEBUG_IMX35_UART || \ 934ad364a70SGreg Ungerer DEBUG_IMX50_UART || \ 935f8c95fe6SShawn Guo DEBUG_IMX51_UART || \ 9360c52db7eSPaul Bolle DEBUG_IMX53_UART || \ 93734e8a16bSShawn Guo DEBUG_IMX6Q_UART || \ 93834e8a16bSShawn Guo DEBUG_IMX6SL_UART 93949c9e60eSShawn Guo default 1 940287939a3SShawn Guo depends on ARCH_MXC 94149c9e60eSShawn Guo help 94249c9e60eSShawn Guo Choose UART port on which kernel low-level debug messages 94349c9e60eSShawn Guo should be output. 94449c9e60eSShawn Guo 945*cfdb7d56SStefan Agnerconfig DEBUG_VF_UART_PORT 946*cfdb7d56SStefan Agner int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART 947*cfdb7d56SStefan Agner default 1 948*cfdb7d56SStefan Agner range 0 3 949*cfdb7d56SStefan Agner depends on SOC_VF610 950*cfdb7d56SStefan Agner help 951*cfdb7d56SStefan Agner Choose UART port on which kernel low-level debug messages 952*cfdb7d56SStefan Agner should be output. 953*cfdb7d56SStefan Agner 954cce278d2SRussell Kingconfig DEBUG_TEGRA_UART 955cce278d2SRussell King bool 956cce278d2SRussell King depends on ARCH_TEGRA 957808b7e07STony Lindgren 958cce278d2SRussell Kingconfig DEBUG_STI_UART 959cce278d2SRussell King bool 960cce278d2SRussell King depends on ARCH_STI 9615026aecfSSrinivas Kandagatla 962c527c3b9SRohit Vaswaniconfig DEBUG_MSM_UART 963c527c3b9SRohit Vaswani bool 9648fc1b0f8SKumar Gala depends on ARCH_MSM || ARCH_QCOM 965c527c3b9SRohit Vaswani 96691a9fec0SRob Herringconfig DEBUG_LL_INCLUDE 96791a9fec0SRob Herring string 968f8f1279cSRussell King default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250 969f8f1279cSRussell King default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X 970a2e40710SArnd Bergmann default "debug/exynos.S" if DEBUG_EXYNOS_UART 971494e492dSUwe Kleine-König default "debug/efm32.S" if DEBUG_LL_UART_EFM32 97291a9fec0SRob Herring default "debug/icedcc.S" if DEBUG_ICEDCC 9736dde5ac5SShawn Guo default "debug/imx.S" if DEBUG_IMX1_UART || \ 9746dde5ac5SShawn Guo DEBUG_IMX25_UART || \ 9756dde5ac5SShawn Guo DEBUG_IMX21_IMX27_UART || \ 9764ad625d4SShawn Guo DEBUG_IMX31_UART || \ 9774ad625d4SShawn Guo DEBUG_IMX35_UART || \ 978ad364a70SGreg Ungerer DEBUG_IMX50_UART || \ 9796dde5ac5SShawn Guo DEBUG_IMX51_UART || \ 9807356420cSFabio Estevam DEBUG_IMX53_UART ||\ 98134e8a16bSShawn Guo DEBUG_IMX6Q_UART || \ 98234e8a16bSShawn Guo DEBUG_IMX6SL_UART 983c527c3b9SRohit Vaswani default "debug/msm.S" if DEBUG_MSM_UART 984808b7e07STony Lindgren default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART 98567bdb287SArnd Bergmann default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 9865026aecfSSrinivas Kandagatla default "debug/sti.S" if DEBUG_STI_UART 987150a8dcfSLinus Torvalds default "debug/tegra.S" if DEBUG_TEGRA_UART 988150a8dcfSLinus Torvalds default "debug/ux500.S" if DEBUG_UX500_UART 9894e218b99SRussell King default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT 990c7c3eac6SShawn Guo default "debug/vf.S" if DEBUG_VF_UART 991b61a2722STony Prisk default "debug/vt8500.S" if DEBUG_VT8500_UART0 992385f02b1SJosh Cartwright default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 99391a9fec0SRob Herring default "mach/debug-macro.S" 99491a9fec0SRob Herring 995f8f1279cSRussell King# Compatibility options for PL01x 9965c972af4SRussell Kingconfig DEBUG_UART_PL01X 9975c972af4SRussell King def_bool ARCH_EP93XX || \ 9985c972af4SRussell King ARCH_INTEGRATOR || \ 9990dc0e475SRussell King ARCH_SPEAR3XX || \ 10000dc0e475SRussell King ARCH_SPEAR6XX || \ 10010dc0e475SRussell King ARCH_SPEAR13XX || \ 10025c972af4SRussell King ARCH_VERSATILE 10035c972af4SRussell King 1004f8f1279cSRussell King# Compatibility options for 8250 10057610b607SRussell Kingconfig DEBUG_UART_8250 10064a003647SRussell King def_bool ARCH_DOVE || ARCH_EBSA110 || \ 10074a003647SRussell King (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \ 10084a003647SRussell King ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \ 10094a003647SRussell King ARCH_IOP33X || ARCH_IXP4XX || ARCH_KIRKWOOD || \ 10104a003647SRussell King ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC 10114a003647SRussell King 1012c3faa9b7SRussell Kingconfig DEBUG_UART_PHYS 1013c3faa9b7SRussell King hex "Physical base address of debug UART" 101497bd1a48SRussell King default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0 1015c3faa9b7SRussell King default 0x01c28000 if DEBUG_SUNXI_UART0 1016c3faa9b7SRussell King default 0x01c28400 if DEBUG_SUNXI_UART1 101797bd1a48SRussell King default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1 101897bd1a48SRussell King default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2 1019f2acf003SRussell King default 0x02530c00 if DEBUG_KEYSTONE_UART0 1020f2acf003SRussell King default 0x02531000 if DEBUG_KEYSTONE_UART1 1021c3faa9b7SRussell King default 0x03010fe0 if ARCH_RPC 10225c972af4SRussell King default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \ 10235c972af4SRussell King DEBUG_VEXPRESS_UART0_CA9 10245c972af4SRussell King default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT 1025c3faa9b7SRussell King default 0x10124000 if DEBUG_RK3X_UART0 1026c3faa9b7SRussell King default 0x10126000 if DEBUG_RK3X_UART1 10275c972af4SRussell King default 0x101f1000 if ARCH_VERSATILE 10285c972af4SRussell King default 0x101fb000 if DEBUG_NOMADIK_UART 10295c972af4SRussell King default 0x16000000 if ARCH_INTEGRATOR 103006580275SHauke Mehrtens default 0x18000300 if DEBUG_BCM_5301X 10315c972af4SRussell King default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1 1032c3faa9b7SRussell King default 0x20060000 if DEBUG_RK29_UART0 1033c3faa9b7SRussell King default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 1034c3faa9b7SRussell King default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 10355c972af4SRussell King default 0x20201000 if DEBUG_BCM2835 1036753d1243SChristian Daudt default 0x3e000000 if DEBUG_BCM_KONA_UART 1037494e492dSUwe Kleine-König default 0x4000e400 if DEBUG_LL_UART_EFM32 1038c3faa9b7SRussell King default 0x40090000 if ARCH_LPC32XX 1039c3faa9b7SRussell King default 0x40100000 if DEBUG_PXA_UART1 1040c3faa9b7SRussell King default 0x42000000 if ARCH_GEMINI 1041c3faa9b7SRussell King default 0x7c0003f8 if FOOTBRIDGE 10425c972af4SRussell King default 0x80070000 if DEBUG_IMX23_UART 10435c972af4SRussell King default 0x80074000 if DEBUG_IMX28_UART 1044c39e1ef7SAlexander Shiyan default 0x80230000 if DEBUG_PICOXCELL_UART 10455c972af4SRussell King default 0x808c0000 if ARCH_EP93XX 10465c972af4SRussell King default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART 10475c972af4SRussell King default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX 10485c972af4SRussell King default 0xc0013000 if DEBUG_U300_UART 1049c3faa9b7SRussell King default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN 1050c3faa9b7SRussell King default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN 10510dc0e475SRussell King default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX 1052c3faa9b7SRussell King default 0xd0012000 if DEBUG_MVEBU_UART 1053c3faa9b7SRussell King default 0xd4017000 if DEBUG_MMP_UART2 1054c3faa9b7SRussell King default 0xd4018000 if DEBUG_MMP_UART3 10550dc0e475SRussell King default 0xe0000000 if ARCH_SPEAR13XX 1056c3faa9b7SRussell King default 0xf0000be0 if ARCH_EBSA110 1057c3faa9b7SRussell King default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE 1058c3faa9b7SRussell King default 0xf1012000 if ARCH_DOVE || ARCH_KIRKWOOD || ARCH_MV78XX0 || \ 1059c3faa9b7SRussell King ARCH_ORION5X 1060caad0b41SSebastian Hesselbarth default 0xf7fc9000 if DEBUG_BERLIN_UART 10618d258bebSHaojian Zhuang default 0xf8b00000 if DEBUG_HI3716_UART 10628d258bebSHaojian Zhuang default 0xfcb00000 if DEBUG_HI3620_UART 1063c3faa9b7SRussell King default 0xfe800000 if ARCH_IOP32X 10640b4cccbeSRussell King default 0xffc02000 if DEBUG_SOCFPGA_UART 1065c3faa9b7SRussell King default 0xffd82340 if ARCH_IOP13XX 10665c972af4SRussell King default 0xfff36000 if DEBUG_HIGHBANK_UART 1067c3faa9b7SRussell King default 0xfffff700 if ARCH_IOP33X 1068f8f1279cSRussell King depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ 1069494e492dSUwe Kleine-König DEBUG_LL_UART_EFM32 || \ 1070f8f1279cSRussell King DEBUG_UART_8250 || DEBUG_UART_PL01X 1071c3faa9b7SRussell King 1072c3faa9b7SRussell Kingconfig DEBUG_UART_VIRT 1073c3faa9b7SRussell King hex "Virtual base address of debug UART" 1074c3faa9b7SRussell King default 0xe0010fe0 if ARCH_RPC 1075c3faa9b7SRussell King default 0xf0000be0 if ARCH_EBSA110 10765c972af4SRussell King default 0xf0009000 if DEBUG_CNS3XXX 10775c972af4SRussell King default 0xf01fb000 if DEBUG_NOMADIK_UART 10785c972af4SRussell King default 0xf0201000 if DEBUG_BCM2835 107906580275SHauke Mehrtens default 0xf1000300 if DEBUG_BCM_5301X 10805c972af4SRussell King default 0xf11f1000 if ARCH_VERSATILE 10815c972af4SRussell King default 0xf1600000 if ARCH_INTEGRATOR 1082c3faa9b7SRussell King default 0xf1c28000 if DEBUG_SUNXI_UART0 1083c3faa9b7SRussell King default 0xf1c28400 if DEBUG_SUNXI_UART1 1084c3faa9b7SRussell King default 0xf2100000 if DEBUG_PXA_UART1 1085c3faa9b7SRussell King default 0xf4090000 if ARCH_LPC32XX 1086c3faa9b7SRussell King default 0xf4200000 if ARCH_GEMINI 1087caad0b41SSebastian Hesselbarth default 0xf7fc9000 if DEBUG_BERLIN_UART 10885c972af4SRussell King default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9 10895c972af4SRussell King default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1 10905c972af4SRussell King default 0xfb009000 if DEBUG_REALVIEW_STD_PORT 10915c972af4SRussell King default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT 10920dc0e475SRussell King default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX 10930dc0e475SRussell King default 0xfd000000 if ARCH_SPEAR13XX 1094c3faa9b7SRussell King default 0xfd012000 if ARCH_MV78XX0 1095c3faa9b7SRussell King default 0xfde12000 if ARCH_DOVE 1096c3faa9b7SRussell King default 0xfe012000 if ARCH_ORION5X 1097c3faa9b7SRussell King default 0xfe017000 if DEBUG_MMP_UART2 1098c3faa9b7SRussell King default 0xfe018000 if DEBUG_MMP_UART3 10995c972af4SRussell King default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART 11000b4cccbeSRussell King default 0xfe230000 if DEBUG_PICOXCELL_UART 1101753d1243SChristian Daudt default 0xfe300000 if DEBUG_BCM_KONA_UART 1102c3faa9b7SRussell King default 0xfe800000 if ARCH_IOP32X 11038d258bebSHaojian Zhuang default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HI3716_UART 1104c3faa9b7SRussell King default 0xfeb24000 if DEBUG_RK3X_UART0 1105c3faa9b7SRussell King default 0xfeb26000 if DEBUG_RK3X_UART1 1106f2acf003SRussell King default 0xfeb30c00 if DEBUG_KEYSTONE_UART0 1107f2acf003SRussell King default 0xfeb31000 if DEBUG_KEYSTONE_UART1 11080b4cccbeSRussell King default 0xfec02000 if DEBUG_SOCFPGA_UART 1109c39e1ef7SAlexander Shiyan default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE 111097bd1a48SRussell King default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0 111197bd1a48SRussell King default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1 111297bd1a48SRussell King default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 1113c3faa9b7SRussell King default 0xfed12000 if ARCH_KIRKWOOD 1114c39e1ef7SAlexander Shiyan default 0xfed60000 if DEBUG_RK29_UART0 1115c39e1ef7SAlexander Shiyan default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 1116c39e1ef7SAlexander Shiyan default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 11175c972af4SRussell King default 0xfedc0000 if ARCH_EP93XX 1118c3faa9b7SRussell King default 0xfee003f8 if FOOTBRIDGE 11195c972af4SRussell King default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART 1120c3faa9b7SRussell King default 0xfee82340 if ARCH_IOP13XX 1121c3faa9b7SRussell King default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN 1122c3faa9b7SRussell King default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN 1123c39e1ef7SAlexander Shiyan default 0xfef36000 if DEBUG_HIGHBANK_UART 1124c3faa9b7SRussell King default 0xfefff700 if ARCH_IOP33X 11255c972af4SRussell King default 0xff003000 if DEBUG_U300_UART 11265c972af4SRussell King default DEBUG_UART_PHYS if !MMU 1127f8f1279cSRussell King depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ 1128f8f1279cSRussell King DEBUG_UART_8250 || DEBUG_UART_PL01X 1129c3faa9b7SRussell King 11304a003647SRussell Kingconfig DEBUG_UART_8250_SHIFT 11314a003647SRussell King int "Register offset shift for the 8250 debug UART" 1132f8f1279cSRussell King depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 11334a003647SRussell King default 0 if FOOTBRIDGE || ARCH_IOP32X 11344a003647SRussell King default 2 11357610b607SRussell King 11360b4cccbeSRussell Kingconfig DEBUG_UART_8250_WORD 11370b4cccbeSRussell King bool "Use 32-bit accesses for 8250 UART" 1138f8f1279cSRussell King depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 11390b4cccbeSRussell King depends on DEBUG_UART_8250_SHIFT >= 2 1140f2acf003SRussell King default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \ 114197bd1a48SRussell King ARCH_KEYSTONE || \ 114297bd1a48SRussell King DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \ 11439d6eccb9SArnd Bergmann DEBUG_DAVINCI_DA8XX_UART2 || \ 1144753d1243SChristian Daudt DEBUG_BCM_KONA_UART 11450b4cccbeSRussell King 11467610b607SRussell Kingconfig DEBUG_UART_8250_FLOW_CONTROL 11477610b607SRussell King bool "Enable flow control for 8250 UART" 1148f8f1279cSRussell King depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 11497610b607SRussell King default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC 11507610b607SRussell King 11513b4af9bcSShawn Guoconfig DEBUG_UNCOMPRESS 11523b4af9bcSShawn Guo bool 115390266754SHeiko Stuebner depends on ARCH_MULTIPLATFORM || ARCH_MSM || PLAT_SAMSUNG 1154b6992fa9SRussell King default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \ 1155ae3c99a2SStephen Warren (!DEBUG_TEGRA_UART || !ZBOOT_ROM) 1156b6992fa9SRussell King help 1157b6992fa9SRussell King This option influences the normal decompressor output for 1158b6992fa9SRussell King multiplatform kernels. Normally, multiplatform kernels disable 1159b6992fa9SRussell King decompressor output because it is not possible to know where to 1160b6992fa9SRussell King send the decompressor output. 1161b6992fa9SRussell King 1162b6992fa9SRussell King When this option is set, the selected DEBUG_LL output method 1163b6992fa9SRussell King will be re-used for normal decompressor output on multiplatform 1164b6992fa9SRussell King kernels. 1165b6992fa9SRussell King 11663b4af9bcSShawn Guo 1167615967b0SShawn Guoconfig UNCOMPRESS_INCLUDE 1168615967b0SShawn Guo string 1169ffd80eccSSachin Kamat default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \ 11702bf73dd6SLinus Torvalds PLAT_SAMSUNG || ARCH_EFM32 1171615967b0SShawn Guo default "mach/uncompress.h" 1172615967b0SShawn Guo 117393fd03a8SCatalin Marinasconfig EARLY_PRINTK 117493fd03a8SCatalin Marinas bool "Early printk" 117593fd03a8SCatalin Marinas depends on DEBUG_LL 117693fd03a8SCatalin Marinas help 117793fd03a8SCatalin Marinas Say Y here if you want to have an early console using the 117893fd03a8SCatalin Marinas kernel low-level debugging functions. Add earlyprintk to your 117993fd03a8SCatalin Marinas kernel parameters to enable this console. 118093fd03a8SCatalin Marinas 1181c5d6c770SAlexander Shishkinconfig OC_ETM 1182c5d6c770SAlexander Shishkin bool "On-chip ETM and ETB" 118353eebb0dSArnd Bergmann depends on ARM_AMBA 1184c5d6c770SAlexander Shishkin help 1185c5d6c770SAlexander Shishkin Enables the on-chip embedded trace macrocell and embedded trace 1186c5d6c770SAlexander Shishkin buffer driver that will allow you to collect traces of the 1187c5d6c770SAlexander Shishkin kernel code. 1188c5d6c770SAlexander Shishkin 11894189bc71SJon Medhurstconfig ARM_KPROBES_TEST 11904189bc71SJon Medhurst tristate "Kprobes test module" 11914189bc71SJon Medhurst depends on KPROBES && MODULES 11924189bc71SJon Medhurst help 11934189bc71SJon Medhurst Perform tests of kprobes API and instruction set simulation. 11944189bc71SJon Medhurst 1195575320d6SWill Deaconconfig PID_IN_CONTEXTIDR 1196575320d6SWill Deacon bool "Write the current PID to the CONTEXTIDR register" 1197575320d6SWill Deacon depends on CPU_COPY_V6 1198575320d6SWill Deacon help 1199575320d6SWill Deacon Enabling this option causes the kernel to write the current PID to 1200575320d6SWill Deacon the PROCID field of the CONTEXTIDR register, at the expense of some 1201575320d6SWill Deacon additional instructions during context switch. Say Y here only if you 1202575320d6SWill Deacon are planning to use hardware trace tools with this kernel. 1203575320d6SWill Deacon 1204dca9aa92SLaura Abbottconfig DEBUG_SET_MODULE_RONX 1205dca9aa92SLaura Abbott bool "Set loadable kernel module data as NX and text as RO" 1206dca9aa92SLaura Abbott depends on MODULES 1207dca9aa92SLaura Abbott ---help--- 1208dca9aa92SLaura Abbott This option helps catch unintended modifications to loadable 1209dca9aa92SLaura Abbott kernel module's text and read-only data. It also prevents execution 1210dca9aa92SLaura Abbott of module data. Such protection may interfere with run-time code 1211dca9aa92SLaura Abbott patching and dynamic kernel tracing - and they might also protect 1212dca9aa92SLaura Abbott against certain classes of kernel exploits. 1213dca9aa92SLaura Abbott If in doubt, say "N". 1214dca9aa92SLaura Abbott 12151da177e4SLinus Torvaldsendmenu 1216