# SPDX-License-Identifier: GPL-2.0 config ARM_PTDUMP_CORE	def_bool n config ARM_PTDUMP_DEBUGFS	bool "Export kernel pagetable layout to userspace via debugfs"	depends on DEBUG_KERNEL	depends on MMU	select ARM_PTDUMP_CORE	select DEBUG_FS	help	  Say Y here if you want to show the kernel pagetable layout in a	  debugfs file. This information is only useful for kernel developers	  who are working in architecture specific areas of the kernel.	  It is probably not a good idea to enable this feature in a production	  kernel.	  If in doubt, say "N" config ARM_DEBUG_WX	bool "Warn on W+X mappings at boot"	depends on MMU	select ARM_PTDUMP_CORE	help		Generate a warning if any W+X mappings are found at boot. 		This is useful for discovering cases where the kernel is leaving		W+X mappings after applying NX, as such mappings are a security risk. 		Look for a message in dmesg output like this: 			arm/mm: Checked W+X mappings: passed, no W+X pages found. 		or like this, if the check failed: 			arm/mm: Checked W+X mappings: FAILED, <N> W+X pages found. 		Note that even if the check fails, your kernel is possibly		still fine, as W+X mappings are not a security hole in		themselves, what they do is that they make the exploitation		of other unfixed kernel bugs easier. 		There is no runtime or memory usage effect of this option		once the kernel has booted up - it's a one time check. 		If in doubt, say "Y". choice	prompt "Choose kernel unwinder"	default UNWINDER_ARM if AEABI	default UNWINDER_FRAME_POINTER if !AEABI	help	  This determines which method will be used for unwinding kernel stack	  traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,	  livepatch, lockdep, and more. config UNWINDER_FRAME_POINTER	bool "Frame pointer unwinder"	depends on !THUMB2_KERNEL	select ARCH_WANT_FRAME_POINTERS	select FRAME_POINTER	help	  This option enables the frame pointer unwinder for unwinding	  kernel stack traces. config UNWINDER_ARM	bool "ARM EABI stack unwinder"	depends on AEABI	select ARM_UNWIND	help	  This option enables stack unwinding support in the kernel	  using the information automatically generated by the	  compiler. The resulting kernel image is slightly bigger but	  the performance is not affected. Currently, this feature	  only works with EABI compilers. endchoice config ARM_UNWIND	bool config BACKTRACE_VERBOSE	bool "Verbose backtrace"	depends on EXPERT	help	  When the kernel produces a warning or oops, the kernel prints a	  trace of the call chain. This option controls whether we include	  the numeric addresses or only include the symbolic information. 	  In most cases, say N here, unless you are intending to debug the	  kernel and have access to the kernel binary image. config DEBUG_USER	bool "Verbose user fault messages"	help	  When a user program crashes due to an exception, the kernel can	  print a brief message explaining what the problem was. This is	  sometimes helpful for debugging but serves no purpose on a	  production system. Most people should say N here. 	  In addition, you need to pass user_debug=N on the kernel command	  line to enable this feature.  N consists of the sum of: 	      1 - undefined instruction events	      2 - system calls	      4 - invalid data aborts	      8 - SIGSEGV faults	     16 - SIGBUS faults # These options are only for real kernel hackers who want to get their hands dirty.config DEBUG_LL	bool "Kernel low-level debugging functions (read help!)"	depends on DEBUG_KERNEL	help	  Say Y here to include definitions of printascii, printch, printhex	  in the kernel.  This is helpful if you are debugging code that	  executes before the console is initialized. 	  Note that selecting this option will limit the kernel to a single	  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 	config DEBUG_ALPINE_UART0		bool "Kernel low-level debugging messages via Alpine UART0"		depends on ARCH_ALPINE		select DEBUG_UART_8250		help		  Say Y here if you want kernel low-level debugging support		  on Alpine based platforms. 	config DEBUG_ASM9260_UART		bool "Kernel low-level debugging via asm9260 UART"		depends on MACH_ASM9260		help		  Say Y here if you want the debug print routines to direct		  their output to an UART or USART port on asm9260 based		  machines. 		    DEBUG_UART_PHYS | DEBUG_UART_VIRT 		    0x80000000      | 0xf0000000     | UART0		    0x80004000      | 0xf0004000     | UART1		    0x80008000      | 0xf0008000     | UART2		    0x8000c000      | 0xf000c000     | UART3		    0x80010000      | 0xf0010000     | UART4		    0x80014000      | 0xf0014000     | UART5		    0x80018000      | 0xf0018000     | UART6		    0x8001c000      | 0xf001c000     | UART7		    0x80020000      | 0xf0020000     | UART8		    0x80024000      | 0xf0024000     | UART9 	config DEBUG_AT91_RM9200_DBGU		bool "Kernel low-level debugging on AT91RM9200, AT91SAM9, SAM9X60 DBGU"		select DEBUG_AT91_UART		depends on SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAM9X60		help		  Say Y here if you want kernel low-level debugging support		  on the DBGU port of:		    at91rm9200, at91sam9260, at91sam9g20, at91sam9261,		    at91sam9g10, at91sam9n12, at91sam9rl64, at91sam9x5, sam9x60 	config DEBUG_AT91_SAM9263_DBGU		bool "Kernel low-level debugging on AT91SAM{9263,9G45,A5D3} DBGU"		select DEBUG_AT91_UART		depends on SOC_AT91SAM9 || SOC_SAMA5D3		help		  Say Y here if you want kernel low-level debugging support		  on the DBGU port of:		    at91sam9263, at91sam9g45, at91sam9m10,		    sama5d3 	config DEBUG_AT91_SAMA5D2_UART1		bool "Kernel low-level debugging on SAMA5D2 UART1"		select DEBUG_AT91_UART		depends on SOC_SAMA5D2		help		  Say Y here if you want kernel low-level debugging support		  on the UART1 port of sama5d2. 	config DEBUG_AT91_SAMA5D4_USART3		bool "Kernel low-level debugging on SAMA5D4 USART3"		select DEBUG_AT91_UART		depends on SOC_SAMA5D4		help		  Say Y here if you want kernel low-level debugging support		  on the USART3 port of sama5d4. 	config DEBUG_AT91_SAMV7_USART1		bool "Kernel low-level debugging via SAMV7 USART1"		select DEBUG_AT91_UART		depends on SOC_SAMV7		help		  Say Y here if you want the debug print routines to direct		  their output to the USART1 port on SAMV7 based		  machines. 	config DEBUG_AT91_SAMA7G5_FLEXCOM3		bool "Kernel low-level debugging on SAMA7G5 FLEXCOM3"		select DEBUG_AT91_UART		depends on SOC_SAMA7G5		help		  Say Y here if you want kernel low-level debugging support		  on the FLEXCOM3 port of SAMA7G5. 	config DEBUG_AT91_LAN966_FLEXCOM		bool "Kernel low-level debugging on LAN966 FLEXCOM USART"		select DEBUG_AT91_UART		depends on SOC_LAN966		help		Say Y here if you want kernel low-level debugging support		on the FLEXCOM port of LAN966. 		DEBUG_UART_PHYS | DEBUG_UART_VIRT 		0xe0040200      | 0xfd040200     | FLEXCOM0		0xe0044200      | 0xfd044200     | FLEXCOM1		0xe0060200      | 0xfd060200     | FLEXCOM2		0xe0064200      | 0xfd064200     | FLEXCOM3		0xe0070200      | 0xfd070200     | FLEXCOM4 		By default, enabling FLEXCOM3 port. Based on requirement, use		DEBUG_UART_PHYS and DEBUG_UART_VIRT configurations from above		table. 	config DEBUG_BCM2835		bool "Kernel low-level debugging on BCM2835 PL011 UART"		depends on ARCH_BCM2835 && ARCH_MULTI_V6		select DEBUG_UART_PL01X 	config DEBUG_BCM2836		bool "Kernel low-level debugging on BCM2836 PL011 UART"		depends on ARCH_BCM2835 && ARCH_MULTI_V7		select DEBUG_UART_PL01X 	config DEBUG_BCM_5301X		bool "Kernel low-level debugging on BCM5301X/NSP UART1"		depends on ARCH_BCM_5301X || ARCH_BCM_NSP		select DEBUG_UART_8250 	config DEBUG_BCMBCA		bool "Kernel low-level debugging on BCMBCA UART0"		depends on ARCH_BCMBCA 	config DEBUG_BCM_HR2		bool "Kernel low-level debugging on Hurricane 2 UART2"		depends on ARCH_BCM_HR2		select DEBUG_UART_8250 	config DEBUG_BCM_IPROC_UART3		bool "Kernel low-level debugging on BCM IPROC UART3"		depends on ARCH_BCM_CYGNUS		select DEBUG_UART_8250		help		  Say Y here if you want the debug print routines to direct		  their output to the third serial port on these devices. 	config DEBUG_BCM_KONA_UART		bool "Kernel low-level debugging messages via BCM KONA UART"		depends on ARCH_BCM_MOBILE		select DEBUG_UART_8250		help		  Say Y here if you want kernel low-level debugging support		  on Broadcom SoC platforms.		  This low level debug works for Broadcom		  mobile SoCs in the Kona family of chips (e.g. bcm28155,		  bcm11351, etc...) 	config DEBUG_BCM63XX_UART		bool "Kernel low-level debugging on BCM63XX UART"		depends on ARCH_BCMBCA 	config DEBUG_BERLIN_UART		bool "Marvell Berlin SoC Debug UART"		depends on ARCH_BERLIN		select DEBUG_UART_8250		help		  Say Y here if you want kernel low-level debugging support		  on Marvell Berlin SoC based platforms. 	config DEBUG_BRCMSTB_UART		bool "Use BRCMSTB UART for low-level debug"		depends on ARCH_BRCMSTB		help		  Say Y here if you want the debug print routines to direct		  their output to the first serial port on these devices. The		  UART physical and virtual address is automatically provided		  based on the chip identification register value. 		  If you have a Broadcom STB chip and would like early print		  messages to appear over the UART, select this option. 	config DEBUG_CLPS711X_UART1		bool "Kernel low-level debugging messages via UART1"		depends on ARCH_CLPS711X		help		  Say Y here if you want the debug print routines to direct		  their output to the first serial port on these devices. 	config DEBUG_CLPS711X_UART2		bool "Kernel low-level debugging messages via UART2"		depends on ARCH_CLPS711X		help		  Say Y here if you want the debug print routines to direct		  their output to the second serial port on these devices. 	config DEBUG_DAVINCI_DA8XX_UART1		bool "Kernel low-level debugging on DaVinci DA8XX using UART1"		depends on ARCH_DAVINCI_DA8XX		select DEBUG_UART_8250		help		  Say Y here if you want the debug print routines to direct		  their output to UART1 serial port on DaVinci DA8XX devices. 	config DEBUG_DAVINCI_DA8XX_UART2		bool "Kernel low-level debugging on DaVinci DA8XX using UART2"		depends on ARCH_DAVINCI_DA8XX		select DEBUG_UART_8250		help		  Say Y here if you want the debug print routines to direct		  their output to UART2 serial port on DaVinci DA8XX devices. 	config DEBUG_DC21285_PORT		bool "Kernel low-level debugging messages via footbridge serial port"		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_DIGICOLOR_UA0		bool "Kernel low-level debugging messages via Digicolor UA0"		depends on ARCH_DIGICOLOR		help		  Say Y here if you want the debug print routines to direct		  their output to the UA0 serial port in the CX92755. 	config DEBUG_EP93XX		bool "Kernel low-level debugging messages via ep93xx UART"		depends on ARCH_EP93XX		select DEBUG_UART_PL01X		help		  Say Y here if you want kernel low-level debugging support		  on Cirrus Logic EP93xx based platforms. 	config DEBUG_FOOTBRIDGE_COM1		bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"		depends on FOOTBRIDGE		select DEBUG_UART_8250		help		  Say Y here if you want the debug print routines to direct		  their output to the 8250 at PCI COM1. 	config DEBUG_GEMINI		bool "Kernel low-level debugging messages via Cortina Systems Gemini UART"		depends on ARCH_GEMINI		select DEBUG_UART_8250		help		  Say Y here if you want kernel low-level debugging support		  on Cortina Gemini based platforms. 	config DEBUG_HI3620_UART		bool "Hisilicon HI3620 Debug UART"		depends on ARCH_HI3xxx		select DEBUG_UART_PL01X		help		  Say Y here if you want kernel low-level debugging support		  on HI3620 UART. 	config DEBUG_HIGHBANK_UART		bool "Kernel low-level debugging messages via Highbank UART"		depends on ARCH_HIGHBANK		select DEBUG_UART_PL01X		help		  Say Y here if you want the debug print routines to direct		  their output to the UART on Highbank based devices. 	config DEBUG_HIP01_UART		bool "Hisilicon Hip01 Debug UART"		depends on ARCH_HIP01		select DEBUG_UART_8250		help		  Say Y here if you want kernel low-level debugging support		  on HIP01 UART. 	config DEBUG_HIP04_UART		bool "Hisilicon HiP04 Debug UART"		depends on ARCH_HIP04		select DEBUG_UART_8250		help		  Say Y here if you want kernel low-level debugging support		  on HIP04 UART. 	config DEBUG_HIX5HD2_UART		bool "Hisilicon Hix5hd2 Debug UART"		depends on ARCH_HIX5HD2		select DEBUG_UART_PL01X		help		  Say Y here if you want kernel low-level debugging support		  on Hix5hd2 UART. 	config DEBUG_IMX1_UART		bool "i.MX1 Debug UART"		depends on SOC_IMX1		help		  Say Y here if you want kernel low-level debugging support		  on i.MX1. 	config DEBUG_IMX23_UART		bool "i.MX23 Debug UART"		depends on SOC_IMX23		select DEBUG_UART_PL01X		help		  Say Y here if you want kernel low-level debugging support		  on i.MX23. 	config DEBUG_IMX25_UART		bool "i.MX25 Debug UART"		depends on SOC_IMX25		help		  Say Y here if you want kernel low-level debugging support		  on i.MX25. 	config DEBUG_IMX27_UART		bool "i.MX27 Debug UART"		depends on SOC_IMX27		help		  Say Y here if you want kernel low-level debugging support		  on i.MX27. 	config DEBUG_IMX28_UART		bool "i.MX28 Debug UART"		depends on SOC_IMX28		select DEBUG_UART_PL01X		help		  Say Y here if you want kernel low-level debugging support		  on i.MX28. 	config DEBUG_IMX31_UART		bool "i.MX31 Debug UART"		depends on SOC_IMX31		help		  Say Y here if you want kernel low-level debugging support		  on i.MX31. 	config DEBUG_IMX35_UART		bool "i.MX35 Debug UART"		depends on SOC_IMX35		help		  Say Y here if you want kernel low-level debugging support		  on i.MX35. 	config DEBUG_IMX50_UART		bool "i.MX50 Debug UART"		depends on SOC_IMX50		help		  Say Y here if you want kernel low-level debugging support		  on i.MX50. 	config DEBUG_IMX51_UART		bool "i.MX51 Debug UART"		depends on SOC_IMX51		help		  Say Y here if you want kernel low-level debugging support		  on i.MX51. 	config DEBUG_IMX53_UART		bool "i.MX53 Debug UART"		depends on SOC_IMX53		help		  Say Y here if you want kernel low-level debugging support		  on i.MX53. 	config DEBUG_IMX6Q_UART		bool "i.MX6Q/DL Debug UART"		depends on SOC_IMX6Q		help		  Say Y here if you want kernel low-level debugging support		  on i.MX6Q/DL. 	config DEBUG_IMX6SL_UART		bool "i.MX6SL Debug UART"		depends on SOC_IMX6SL		help		  Say Y here if you want kernel low-level debugging support		  on i.MX6SL. 	config DEBUG_IMX6SX_UART		bool "i.MX6SX Debug UART"		depends on SOC_IMX6SX		help		  Say Y here if you want kernel low-level debugging support		  on i.MX6SX. 	config DEBUG_IMX6UL_UART		bool "i.MX6UL Debug UART"		depends on SOC_IMX6UL

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