Loading arch/arm/Kconfig.debug +59 −30 Original line number Original line Diff line number Diff line Loading @@ -65,57 +65,86 @@ config DEBUG_USER # These options are only for real kernel hackers who want to get their hands dirty. # These options are only for real kernel hackers who want to get their hands dirty. config DEBUG_LL config DEBUG_LL bool "Kernel low-level debugging functions" bool "Kernel low-level debugging functions (read help!)" depends on DEBUG_KERNEL depends on DEBUG_KERNEL help help Say Y here to include definitions of printascii, printch, printhex Say Y here to include definitions of printascii, printch, printhex in the kernel. This is helpful if you are debugging code that in the kernel. This is helpful if you are debugging code that executes before the console is initialized. executes before the console is initialized. config EARLY_PRINTK Note that selecting this option will limit the kernel to a single bool "Early printk" UART definition, as specified below. Attempting to boot the kernel image on a different platform *will not work*, so this option should not be enabled for kernels that are intended to be portable. choice prompt "Kernel low-level debugging port" depends on DEBUG_LL depends on DEBUG_LL config DEBUG_LL_UART_NONE bool "No low-level debugging UART" help help Say Y here if you want to have an early console using the Say Y here if your platform doesn't provide a UART option kernel low-level debugging functions. Add earlyprintk to your below. This relies on your platform choosing the right UART kernel parameters to enable this console. definition internally in order for low-level debugging to work. config DEBUG_ICEDCC config DEBUG_ICEDCC bool "Kernel low-level debugging via EmbeddedICE DCC channel" bool "Kernel low-level debugging via EmbeddedICE DCC channel" depends on DEBUG_LL help help Say Y here if you want the debug print routines to direct their Say Y here if you want the debug print routines to direct output to the EmbeddedICE macrocell's DCC channel using their output to the EmbeddedICE macrocell's DCC channel using co-processor 14. This is known to work on the ARM9 style ICE co-processor 14. This is known to work on the ARM9 style ICE channel and on the XScale with the PEEDI. channel and on the XScale with the PEEDI. It does include a timeout to ensure that the system does not Note that the system will appear to hang during boot if there totally freeze when there is nothing connected to read. is nothing connected to read from the DCC. config OC_ETM config DEBUG_FOOTBRIDGE_COM1 bool "On-chip ETM and ETB" bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" select ARM_AMBA depends on FOOTBRIDGE help help Enables the on-chip embedded trace macrocell and embedded trace Say Y here if you want the debug print routines to direct buffer driver that will allow you to collect traces of the their output to the 8250 at PCI COM1. kernel code. config DEBUG_DC21285_PORT config DEBUG_DC21285_PORT bool "Kernel low-level debugging messages via footbridge serial port" bool "Kernel low-level debugging messages via footbridge serial port" depends on DEBUG_LL && FOOTBRIDGE depends on FOOTBRIDGE help Say Y here if you want the debug print routines to direct their output to the serial port in the DC21285 (Footbridge). config DEBUG_CLPS711X_UART1 bool "Kernel low-level debugging messages via UART1" depends on ARCH_CLPS711X help help Say Y here if you want the debug print routines to direct their Say Y here if you want the debug print routines to direct output to the serial port in the DC21285 (Footbridge). Saying N their output to the first serial port on these devices. will cause the debug messages to appear on the first 16550 serial port. config DEBUG_CLPS711X_UART2 config DEBUG_CLPS711X_UART2 bool "Kernel low-level debugging messages via UART2" bool "Kernel low-level debugging messages via UART2" depends on DEBUG_LL && ARCH_CLPS711X depends on ARCH_CLPS711X help help Say Y here if you want the debug print routines to direct their Say Y here if you want the debug print routines to direct output to the second serial port on these devices. Saying N will their output to the second serial port on these devices. cause the debug messages to appear on the first serial port. endchoice 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. config OC_ETM bool "On-chip ETM and ETB" select 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. config DEBUG_S3C_UART config DEBUG_S3C_UART depends on PLAT_SAMSUNG depends on PLAT_SAMSUNG Loading Loading
arch/arm/Kconfig.debug +59 −30 Original line number Original line Diff line number Diff line Loading @@ -65,57 +65,86 @@ config DEBUG_USER # These options are only for real kernel hackers who want to get their hands dirty. # These options are only for real kernel hackers who want to get their hands dirty. config DEBUG_LL config DEBUG_LL bool "Kernel low-level debugging functions" bool "Kernel low-level debugging functions (read help!)" depends on DEBUG_KERNEL depends on DEBUG_KERNEL help help Say Y here to include definitions of printascii, printch, printhex Say Y here to include definitions of printascii, printch, printhex in the kernel. This is helpful if you are debugging code that in the kernel. This is helpful if you are debugging code that executes before the console is initialized. executes before the console is initialized. config EARLY_PRINTK Note that selecting this option will limit the kernel to a single bool "Early printk" UART definition, as specified below. Attempting to boot the kernel image on a different platform *will not work*, so this option should not be enabled for kernels that are intended to be portable. choice prompt "Kernel low-level debugging port" depends on DEBUG_LL depends on DEBUG_LL config DEBUG_LL_UART_NONE bool "No low-level debugging UART" help help Say Y here if you want to have an early console using the Say Y here if your platform doesn't provide a UART option kernel low-level debugging functions. Add earlyprintk to your below. This relies on your platform choosing the right UART kernel parameters to enable this console. definition internally in order for low-level debugging to work. config DEBUG_ICEDCC config DEBUG_ICEDCC bool "Kernel low-level debugging via EmbeddedICE DCC channel" bool "Kernel low-level debugging via EmbeddedICE DCC channel" depends on DEBUG_LL help help Say Y here if you want the debug print routines to direct their Say Y here if you want the debug print routines to direct output to the EmbeddedICE macrocell's DCC channel using their output to the EmbeddedICE macrocell's DCC channel using co-processor 14. This is known to work on the ARM9 style ICE co-processor 14. This is known to work on the ARM9 style ICE channel and on the XScale with the PEEDI. channel and on the XScale with the PEEDI. It does include a timeout to ensure that the system does not Note that the system will appear to hang during boot if there totally freeze when there is nothing connected to read. is nothing connected to read from the DCC. config OC_ETM config DEBUG_FOOTBRIDGE_COM1 bool "On-chip ETM and ETB" bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" select ARM_AMBA depends on FOOTBRIDGE help help Enables the on-chip embedded trace macrocell and embedded trace Say Y here if you want the debug print routines to direct buffer driver that will allow you to collect traces of the their output to the 8250 at PCI COM1. kernel code. config DEBUG_DC21285_PORT config DEBUG_DC21285_PORT bool "Kernel low-level debugging messages via footbridge serial port" bool "Kernel low-level debugging messages via footbridge serial port" depends on DEBUG_LL && FOOTBRIDGE depends on FOOTBRIDGE help Say Y here if you want the debug print routines to direct their output to the serial port in the DC21285 (Footbridge). config DEBUG_CLPS711X_UART1 bool "Kernel low-level debugging messages via UART1" depends on ARCH_CLPS711X help help Say Y here if you want the debug print routines to direct their Say Y here if you want the debug print routines to direct output to the serial port in the DC21285 (Footbridge). Saying N their output to the first serial port on these devices. will cause the debug messages to appear on the first 16550 serial port. config DEBUG_CLPS711X_UART2 config DEBUG_CLPS711X_UART2 bool "Kernel low-level debugging messages via UART2" bool "Kernel low-level debugging messages via UART2" depends on DEBUG_LL && ARCH_CLPS711X depends on ARCH_CLPS711X help help Say Y here if you want the debug print routines to direct their Say Y here if you want the debug print routines to direct output to the second serial port on these devices. Saying N will their output to the second serial port on these devices. cause the debug messages to appear on the first serial port. endchoice 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. config OC_ETM bool "On-chip ETM and ETB" select 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. config DEBUG_S3C_UART config DEBUG_S3C_UART depends on PLAT_SAMSUNG depends on PLAT_SAMSUNG Loading
