mirror of https://gitee.com/openkylin/linux.git
636 lines
20 KiB
Plaintext
636 lines
20 KiB
Plaintext
menu "Kernel hacking"
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source "lib/Kconfig.debug"
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config STRICT_DEVMEM
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bool "Filter access to /dev/mem"
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depends on MMU
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---help---
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If this option is disabled, you allow userspace (root) access to all
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of memory, including kernel and userspace memory. Accidental
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access to this is obviously disastrous, but specific access can
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be used by people debugging the kernel.
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If this option is switched on, the /dev/mem file only allows
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userspace access to memory mapped peripherals.
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If in doubt, say Y.
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# RMK wants arm kernels compiled with frame pointers or stack unwinding.
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# If you know what you are doing and are willing to live without stack
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# traces, you can get a slightly smaller kernel by setting this option to
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# n, but then RMK will have to kill you ;).
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config FRAME_POINTER
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bool
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depends on !THUMB2_KERNEL
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default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
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help
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If you say N here, the resulting kernel will be slightly smaller and
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faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
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when a problem occurs with the kernel, the information that is
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reported is severely limited.
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config ARM_UNWIND
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bool "Enable stack unwinding support (EXPERIMENTAL)"
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depends on AEABI
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default y
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help
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This option enables stack unwinding support in the kernel
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using the information automatically generated by the
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compiler. The resulting kernel image is slightly bigger but
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the performance is not affected. Currently, this feature
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only works with EABI compilers. If unsure say Y.
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config OLD_MCOUNT
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bool
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depends on FUNCTION_TRACER && FRAME_POINTER
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default y
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config DEBUG_USER
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bool "Verbose user fault messages"
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help
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When a user program crashes due to an exception, the kernel can
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print a brief message explaining what the problem was. This is
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sometimes helpful for debugging but serves no purpose on a
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production system. Most people should say N here.
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In addition, you need to pass user_debug=N on the kernel command
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line to enable this feature. N consists of the sum of:
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1 - undefined instruction events
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2 - system calls
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4 - invalid data aborts
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8 - SIGSEGV faults
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16 - SIGBUS faults
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# These options are only for real kernel hackers who want to get their hands dirty.
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config DEBUG_LL
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bool "Kernel low-level debugging functions (read help!)"
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depends on DEBUG_KERNEL
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help
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Say Y here to include definitions of printascii, printch, printhex
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in the kernel. This is helpful if you are debugging code that
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executes before the console is initialized.
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Note that selecting this option will limit the kernel to a single
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UART definition, as specified below. Attempting to boot the kernel
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image on a different platform *will not work*, so this option should
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not be enabled for kernels that are intended to be portable.
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choice
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prompt "Kernel low-level debugging port"
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depends on DEBUG_LL
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config AT91_DEBUG_LL_DBGU0
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bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
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depends on HAVE_AT91_DBGU0
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config AT91_DEBUG_LL_DBGU1
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bool "Kernel low-level debugging on 9263 and 9g45"
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depends on HAVE_AT91_DBGU1
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config DEBUG_CLPS711X_UART1
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bool "Kernel low-level debugging messages via UART1"
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depends on ARCH_CLPS711X
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help
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Say Y here if you want the debug print routines to direct
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their output to the first serial port on these devices.
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config DEBUG_CLPS711X_UART2
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bool "Kernel low-level debugging messages via UART2"
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depends on ARCH_CLPS711X
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help
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Say Y here if you want the debug print routines to direct
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their output to the second serial port on these devices.
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config DEBUG_DAVINCI_DA8XX_UART1
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bool "Kernel low-level debugging on DaVinci DA8XX using UART1"
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depends on ARCH_DAVINCI_DA8XX
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help
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Say Y here if you want the debug print routines to direct
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their output to UART1 serial port on DaVinci DA8XX devices.
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config DEBUG_DAVINCI_DA8XX_UART2
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bool "Kernel low-level debugging on DaVinci DA8XX using UART2"
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depends on ARCH_DAVINCI_DA8XX
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help
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Say Y here if you want the debug print routines to direct
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their output to UART2 serial port on DaVinci DA8XX devices.
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config DEBUG_DAVINCI_DMx_UART0
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bool "Kernel low-level debugging on DaVinci DMx using UART0"
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depends on ARCH_DAVINCI_DMx
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help
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Say Y here if you want the debug print routines to direct
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their output to UART0 serial port on DaVinci DMx devices.
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config DEBUG_DAVINCI_TNETV107X_UART1
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bool "Kernel low-level debugging on DaVinci TNETV107x using UART1"
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depends on ARCH_DAVINCI_TNETV107X
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help
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Say Y here if you want the debug print routines to direct
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their output to UART1 serial port on DaVinci TNETV107X
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devices.
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config DEBUG_ZYNQ_UART0
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bool "Kernel low-level debugging on Xilinx Zynq using UART0"
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depends on ARCH_ZYNQ
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help
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Say Y here if you want the debug print routines to direct
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their output to UART0 on the Zynq platform.
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config DEBUG_ZYNQ_UART1
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bool "Kernel low-level debugging on Xilinx Zynq using UART1"
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depends on ARCH_ZYNQ
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help
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Say Y here if you want the debug print routines to direct
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their output to UART1 on the Zynq platform.
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If you have a ZC702 board and want early boot messages to
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appear on the USB serial adaptor, select this option.
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config DEBUG_DC21285_PORT
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bool "Kernel low-level debugging messages via footbridge serial port"
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depends on FOOTBRIDGE
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help
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Say Y here if you want the debug print routines to direct
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their output to the serial port in the DC21285 (Footbridge).
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config DEBUG_FOOTBRIDGE_COM1
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bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
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depends on FOOTBRIDGE
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help
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Say Y here if you want the debug print routines to direct
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their output to the 8250 at PCI COM1.
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config DEBUG_HIGHBANK_UART
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bool "Kernel low-level debugging messages via Highbank UART"
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depends on ARCH_HIGHBANK
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help
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Say Y here if you want the debug print routines to direct
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their output to the UART on Highbank based devices.
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config DEBUG_IMX1_UART
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bool "i.MX1 Debug UART"
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depends on SOC_IMX1
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX1.
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config DEBUG_IMX23_UART
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bool "i.MX23 Debug UART"
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depends on SOC_IMX23
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX23.
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config DEBUG_IMX25_UART
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bool "i.MX25 Debug UART"
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depends on SOC_IMX25
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX25.
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config DEBUG_IMX21_IMX27_UART
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bool "i.MX21 and i.MX27 Debug UART"
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depends on SOC_IMX21 || SOC_IMX27
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX21 or i.MX27.
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config DEBUG_IMX28_UART
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bool "i.MX28 Debug UART"
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depends on SOC_IMX28
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX28.
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config DEBUG_IMX31_UART
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bool "i.MX31 Debug UART"
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depends on SOC_IMX31
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX31.
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config DEBUG_IMX35_UART
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bool "i.MX35 Debug UART"
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depends on SOC_IMX35
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX35.
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config DEBUG_IMX51_UART
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bool "i.MX51 Debug UART"
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depends on SOC_IMX51
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX51.
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config DEBUG_IMX53_UART
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bool "i.MX53 Debug UART"
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depends on SOC_IMX53
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX53.
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config DEBUG_IMX6Q_UART
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bool "i.MX6Q Debug UART"
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depends on SOC_IMX6Q
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help
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Say Y here if you want kernel low-level debugging support
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on i.MX6Q.
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config DEBUG_MMP_UART2
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bool "Kernel low-level debugging message via MMP UART2"
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depends on ARCH_MMP
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help
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Say Y here if you want kernel low-level debugging support
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on MMP UART2.
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config DEBUG_MMP_UART3
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bool "Kernel low-level debugging message via MMP UART3"
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depends on ARCH_MMP
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help
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Say Y here if you want kernel low-level debugging support
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on MMP UART3.
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config DEBUG_MSM_UART1
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bool "Kernel low-level debugging messages via MSM UART1"
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depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
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help
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Say Y here if you want the debug print routines to direct
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their output to the first serial port on MSM devices.
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config DEBUG_MSM_UART2
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bool "Kernel low-level debugging messages via MSM UART2"
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depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
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help
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Say Y here if you want the debug print routines to direct
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their output to the second serial port on MSM devices.
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config DEBUG_MSM_UART3
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bool "Kernel low-level debugging messages via MSM UART3"
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depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
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help
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Say Y here if you want the debug print routines to direct
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their output to the third serial port on MSM devices.
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config DEBUG_MSM8660_UART
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bool "Kernel low-level debugging messages via MSM 8660 UART"
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depends on ARCH_MSM8X60
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select MSM_HAS_DEBUG_UART_HS
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help
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Say Y here if you want the debug print routines to direct
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their output to the serial port on MSM 8660 devices.
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config DEBUG_MSM8960_UART
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bool "Kernel low-level debugging messages via MSM 8960 UART"
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depends on ARCH_MSM8960
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select MSM_HAS_DEBUG_UART_HS
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help
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Say Y here if you want the debug print routines to direct
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their output to the serial port on MSM 8960 devices.
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config DEBUG_MVEBU_UART
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bool "Kernel low-level debugging messages via MVEBU UART"
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depends on ARCH_MVEBU
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help
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Say Y here if you want kernel low-level debugging support
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on MVEBU based platforms.
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config DEBUG_OMAP2PLUS_UART
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bool "Kernel low-level debugging messages via OMAP2PLUS UART"
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depends on ARCH_OMAP2PLUS
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help
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Say Y here if you want kernel low-level debugging support
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on OMAP2PLUS based platforms.
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config DEBUG_PICOXCELL_UART
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depends on ARCH_PICOXCELL
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bool "Use PicoXcell UART for low-level debug"
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help
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Say Y here if you want kernel low-level debugging support
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on PicoXcell based platforms.
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config DEBUG_REALVIEW_STD_PORT
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bool "RealView Default UART"
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depends on ARCH_REALVIEW
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help
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Say Y here if you want the debug print routines to direct
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their output to the serial port on RealView EB, PB11MP, PBA8
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and PBX platforms.
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config DEBUG_REALVIEW_PB1176_PORT
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bool "RealView PB1176 UART"
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depends on MACH_REALVIEW_PB1176
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help
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Say Y here if you want the debug print routines to direct
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their output to the standard serial port on the RealView
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PB1176 platform.
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config DEBUG_S3C_UART0
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depends on PLAT_SAMSUNG
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bool "Use S3C UART 0 for low-level debug"
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help
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Say Y here if you want the debug print routines to direct
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their output to UART 0. The port must have been initialised
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by the boot-loader before use.
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The uncompressor code port configuration is now handled
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by CONFIG_S3C_LOWLEVEL_UART_PORT.
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config DEBUG_S3C_UART1
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depends on PLAT_SAMSUNG
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bool "Use S3C UART 1 for low-level debug"
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help
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Say Y here if you want the debug print routines to direct
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their output to UART 1. The port must have been initialised
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by the boot-loader before use.
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The uncompressor code port configuration is now handled
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by CONFIG_S3C_LOWLEVEL_UART_PORT.
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config DEBUG_S3C_UART2
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depends on PLAT_SAMSUNG
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bool "Use S3C UART 2 for low-level debug"
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help
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Say Y here if you want the debug print routines to direct
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their output to UART 2. The port must have been initialised
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by the boot-loader before use.
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The uncompressor code port configuration is now handled
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by CONFIG_S3C_LOWLEVEL_UART_PORT.
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config DEBUG_S3C_UART3
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depends on PLAT_SAMSUNG && ARCH_EXYNOS
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bool "Use S3C UART 3 for low-level debug"
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help
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Say Y here if you want the debug print routines to direct
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their output to UART 3. The port must have been initialised
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by the boot-loader before use.
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The uncompressor code port configuration is now handled
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by CONFIG_S3C_LOWLEVEL_UART_PORT.
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config DEBUG_SOCFPGA_UART
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depends on ARCH_SOCFPGA
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bool "Use SOCFPGA UART for low-level debug"
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help
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Say Y here if you want kernel low-level debugging support
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on SOCFPGA based platforms.
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config DEBUG_SUNXI_UART0
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bool "Kernel low-level debugging messages via sunXi UART0"
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depends on ARCH_SUNXI
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help
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Say Y here if you want kernel low-level debugging support
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on Allwinner A1X based platforms on the UART0.
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config DEBUG_SUNXI_UART1
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bool "Kernel low-level debugging messages via sunXi UART1"
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depends on ARCH_SUNXI
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help
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Say Y here if you want kernel low-level debugging support
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on Allwinner A1X based platforms on the UART1.
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config DEBUG_TEGRA_UART
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depends on ARCH_TEGRA
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bool "Use Tegra UART for low-level debug"
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help
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Say Y here if you want kernel low-level debugging support
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on Tegra based platforms.
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config DEBUG_SIRFPRIMA2_UART1
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bool "Kernel low-level debugging messages via SiRFprimaII UART1"
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depends on ARCH_PRIMA2
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help
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Say Y here if you want the debug print routines to direct
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their output to the uart1 port on SiRFprimaII devices.
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config DEBUG_SIRFMARCO_UART1
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bool "Kernel low-level debugging messages via SiRFmarco UART1"
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depends on ARCH_MARCO
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help
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Say Y here if you want the debug print routines to direct
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their output to the uart1 port on SiRFmarco devices.
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config DEBUG_VEXPRESS_UART0_DETECT
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bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
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depends on ARCH_VEXPRESS && CPU_CP15_MMU
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help
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This option enables a simple heuristic which tries to determine
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the motherboard's memory map variant (original or RS1) and then
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choose the relevant UART0 base address.
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Note that this will only work with standard A-class core tiles,
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and may fail with non-standard SMM or custom software models.
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config DEBUG_VEXPRESS_UART0_CA9
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bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)"
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depends on ARCH_VEXPRESS
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help
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This option selects UART0 at 0x10009000. Except for custom models,
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this applies only to the V2P-CA9 tile.
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config DEBUG_VEXPRESS_UART0_RS1
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bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)"
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depends on ARCH_VEXPRESS
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help
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This option selects UART0 at 0x1c090000. This applies to most
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of the tiles using the RS1 memory map, including all new A-class
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core tiles, FPGA-based SMMs and software models.
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config DEBUG_VT8500_UART0
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bool "Use UART0 on VIA/Wondermedia SoCs"
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depends on ARCH_VT8500
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help
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This option selects UART0 on VIA/Wondermedia System-on-a-chip
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devices, including VT8500, WM8505, WM8650 and WM8850.
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config DEBUG_LL_UART_NONE
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bool "No low-level debugging UART"
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depends on !ARCH_MULTIPLATFORM
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help
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Say Y here if your platform doesn't provide a UART option
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below. This relies on your platform choosing the right UART
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definition internally in order for low-level debugging to
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work.
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config DEBUG_ICEDCC
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bool "Kernel low-level debugging via EmbeddedICE DCC channel"
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help
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Say Y here if you want the debug print routines to direct
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their output to the EmbeddedICE macrocell's DCC channel using
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co-processor 14. This is known to work on the ARM9 style ICE
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channel and on the XScale with the PEEDI.
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Note that the system will appear to hang during boot if there
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is nothing connected to read from the DCC.
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config DEBUG_SEMIHOSTING
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bool "Kernel low-level debug output via semihosting I/O"
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help
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Semihosting enables code running on an ARM target to use
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the I/O facilities on a host debugger/emulator through a
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simple SVC call. The host debugger or emulator must have
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semihosting enabled for the special svc call to be trapped
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otherwise the kernel will crash.
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This is known to work with OpenOCD, as well as
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ARM's Fast Models, or any other controlling environment
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that implements semihosting.
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For more details about semihosting, please see
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chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd.
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endchoice
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config DEBUG_IMX_UART_PORT
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int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \
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DEBUG_IMX25_UART || \
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DEBUG_IMX21_IMX27_UART || \
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DEBUG_IMX31_UART || \
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DEBUG_IMX35_UART || \
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DEBUG_IMX51_UART || \
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DEBUG_IMX53_UART || \
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DEBUG_IMX6Q_UART
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default 1
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help
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Choose UART port on which kernel low-level debug messages
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should be output.
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choice
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prompt "Low-level debug console UART"
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depends on DEBUG_OMAP2PLUS_UART
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config DEBUG_OMAP2UART1
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bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)"
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help
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This covers at least h4, 2430sdp, 3430sdp, 3630sdp,
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omap3 torpedo and 3530 lv som.
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config DEBUG_OMAP2UART2
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bool "OMAP2/3/4 UART2"
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config DEBUG_OMAP2UART3
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bool "OMAP2 UART3 (n8x0)"
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config DEBUG_OMAP3UART3
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bool "OMAP3 UART3 (most omap3 boards)"
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help
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This covers at least cm_t3x, beagle, crane, devkit8000,
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igep00x0, ldp, n900, n9(50), pandora, overo, touchbook,
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and 3517evm.
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config DEBUG_OMAP4UART3
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bool "OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)"
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config DEBUG_OMAP3UART4
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bool "OMAP36XX UART4"
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config DEBUG_OMAP4UART4
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bool "OMAP4/5 UART4"
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config DEBUG_TI81XXUART1
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bool "TI81XX UART1 (ti8148evm)"
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config DEBUG_TI81XXUART2
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bool "TI81XX UART2"
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config DEBUG_TI81XXUART3
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bool "TI81XX UART3 (ti8168evm)"
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config DEBUG_AM33XXUART1
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bool "AM33XX UART1"
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config DEBUG_ZOOM_UART
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bool "Zoom2/3 UART"
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endchoice
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choice
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prompt "Low-level debug console UART"
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depends on DEBUG_LL && DEBUG_TEGRA_UART
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config TEGRA_DEBUG_UART_AUTO_ODMDATA
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bool "Via ODMDATA"
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help
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Automatically determines which UART to use for low-level debug based
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on the ODMDATA value. This value is part of the BCT, and is written
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to the boot memory device using nvflash, or other flashing tool.
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When bits 19:18 are 3, then bits 17:15 indicate which UART to use;
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0/1/2/3/4 are UART A/B/C/D/E.
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config TEGRA_DEBUG_UARTA
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bool "UART A"
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config TEGRA_DEBUG_UARTB
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bool "UART B"
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config TEGRA_DEBUG_UARTC
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bool "UART C"
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config TEGRA_DEBUG_UARTD
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bool "UART D"
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config TEGRA_DEBUG_UARTE
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bool "UART E"
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endchoice
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config DEBUG_LL_INCLUDE
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string
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default "debug/icedcc.S" if DEBUG_ICEDCC
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default "debug/imx.S" if DEBUG_IMX1_UART || \
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DEBUG_IMX25_UART || \
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DEBUG_IMX21_IMX27_UART || \
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DEBUG_IMX31_UART || \
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DEBUG_IMX35_UART || \
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DEBUG_IMX51_UART || \
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DEBUG_IMX53_UART ||\
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DEBUG_IMX6Q_UART
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default "debug/highbank.S" if DEBUG_HIGHBANK_UART
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default "debug/mvebu.S" if DEBUG_MVEBU_UART
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default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART
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default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART
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default "debug/socfpga.S" if DEBUG_SOCFPGA_UART
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default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1
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default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \
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DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1
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default "debug/vt8500.S" if DEBUG_VT8500_UART0
|
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default "debug/tegra.S" if DEBUG_TEGRA_UART
|
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default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
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default "mach/debug-macro.S"
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|
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config EARLY_PRINTK
|
|
bool "Early printk"
|
|
depends on DEBUG_LL
|
|
help
|
|
Say Y here if you want to have an early console using the
|
|
kernel low-level debugging functions. Add earlyprintk to your
|
|
kernel parameters to enable this console.
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|
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config OC_ETM
|
|
bool "On-chip ETM and ETB"
|
|
depends on ARM_AMBA
|
|
help
|
|
Enables the on-chip embedded trace macrocell and embedded trace
|
|
buffer driver that will allow you to collect traces of the
|
|
kernel code.
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|
|
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config ARM_KPROBES_TEST
|
|
tristate "Kprobes test module"
|
|
depends on KPROBES && MODULES
|
|
help
|
|
Perform tests of kprobes API and instruction set simulation.
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|
|
|
config PID_IN_CONTEXTIDR
|
|
bool "Write the current PID to the CONTEXTIDR register"
|
|
depends on CPU_COPY_V6
|
|
help
|
|
Enabling this option causes the kernel to write the current PID to
|
|
the PROCID field of the CONTEXTIDR register, at the expense of some
|
|
additional instructions during context switch. Say Y here only if you
|
|
are planning to use hardware trace tools with this kernel.
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|
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endmenu
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