#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

if ARCH_SIM
comment "Simulation Configuration Options"

choice
	prompt "Host CPU Type"
	default HOST_X86_64

config HOST_X86_64
	bool "x86_64"

config HOST_X86
	bool "x86"

endchoice # Host CPU Type

config SIM_M32
	bool "Build 32-bit simulation on 64-bit machine"
	default n
	depends on HOST_X86_64
	---help---
		Simulation context switching is based on logic like setjmp and longjmp.  This
		context switching is only available for 32-bit targets.  On 64-bit machines,
		this context switching will fail.

		The workaround on 64-bit machines for now is to build for a 32-bit target on the
		64-bit machine.  The workaround for this issue has been included in NuttX 6.15 and
		beyond.  For thoses versions, you must add SIM_M32=y to the .config file in
		order to enable building a 32-bit image on a 64-bit platform.

config SIM_CYGWIN_DECORATED
	bool "Decorated Cygwin names"
	default n
	depends on WINDOWS_CYGWIN
	---help---
		Older versions of Cygwin toolsdecorated C symbol names by adding an
		underscore to the beginning of the symbol name.  Newer versions of
		Cygwin do not seem to do this.

		How do you know if you need this option?  You could look at the generated
		symbol tables to see if there are underscore characters at the beginning
		of the symbol names.  Or, if you need this option, the simulation will not
		run:  It will crash early, probably in some function due to the failure to
		allocate memory.

choice
	prompt "X64_64 ABI"
	default SIM_X8664_SYSTEMV if HOST_LINUX
	default SIM_X8664_MICROSOFT if HOST_WINDOWS
	depends on HOST_X86_64 && !SIM_32

config SIM_X8664_SYSTEMV
	bool "System V AMD64 ABI"
	---help---
		The calling convention of the System V AMD64 ABI is followed on Solaris,
		Linux, FreeBSD, Mac OS X, and other UNIX-like or POSIX-compliant operating
		systems. The first six integer or pointer arguments are passed in registers
		RDI, RSI, RDX, RCX, R8, and R9, while XMM0, XMM1, XMM2, XMM3, XMM4, XMM5,
		XMM6 and XMM7 are used for floating point arguments. For system calls, R10
		is used instead of RCX.   As in the Microsoft x64 calling convention,
		additional arguments are passed on the stack and the return value is stored
		in RAX.

		Registers RBP, RBX, and R12-R15 are callee-save registers; all others must
		be saved by the caller if they wish to preserve their values.

		Unlike the Microsoft calling convention, a shadow space is not provided; on
		function entry, the return address is adjacent to the seventh integer argument
		on the stack.

config SIM_X8664_MICROSOFT
	bool "Microsoft x64 calling convention"
	---help---
		The Microsoft x64 calling convention is followed on Microsoft Windows and
		pre-boot UEFI (for long mode on x86-64). It uses registers RCX, RDX, R8,
		R9 for the first four integer or pointer arguments (in that order), and
		XMM0, XMM1, XMM2, XMM3 are used for floating point arguments. Additional
		arguments are pushed onto the stack (right to left). Integer return
		values (similar to x86) are returned in RAX if 64 bits or less. Floating
		point return values are returned in XMM0. Parameters less than 64 bits
		long are not zero extended; the high bits are not zeroed.

endchoice

config SIM_WALLTIME
	bool "Execution simulation in near real-time"
	default n
	---help---
		NOTE:  In order to facility fast testing, the sim target's IDLE loop, by default,
		calls the system timer "interrupt handler" as fast as possible.  As a result, there
		really are no noticeable delays when a task sleeps.  However, the task really does
		sleep -- but the time scale is wrong.  If you want behavior that is closer to
		normal timing, then you can define SIM_WALLTIME=y in your configuration
		file.  This configuration setting will cause the sim target's IDLE loop to delay
		on each call so that the system "timer interrupt" is called at a rate approximately
		correct for the system timer tick rate.  With this definition in the configuration,
		sleep() behavior is more or less normal.

if HOST_LINUX
choice
	prompt "Simulation Network Type"
	default SIM_NET_HOST_ROUTE

config SIM_NET_HOST_ROUTE
	bool "Use local host route"
	---help---
		Add a host route for the simulation that points to the created tap device.  The
		simulation will not be able to access the public network unless iptables is
		configured to masquerade for it.  See configs/sim/NETWORK-LINUX.txt for more 
		information.

config SIM_NET_BRIDGE
	bool "Attach to Linux bridge"
	 ---help---
		Add the created tap device to the specified bridge.  You will need to manually
		configure the bridge IP address (if any) and routes that point to the bridge.
		See configs/sim/NETWORK-LINUX.txt for more information.

endchoice
endif

if SIM_NET_BRIDGE
config SIM_NET_BRIDGE_DEVICE
	string "Bridge device to attach"
	default "nuttx0"
	---help---
		The name of the bridge device (as passed to "brctl create") to which the simulation's
		TAP interface should be added.

endif

config SIM_LCDDRIVER
	bool "Build a simulated LCD driver"
	default y
	depends on NX && NX_LCDDRIVER
	---help---
		Build a simulated LCD driver"

config SIM_FRAMEBUFFER
	bool "Build a simulated frame buffer driver"
	default n
	depends on !NX_LCDDRIVER
	---help---
		Build a simulated frame buffer driver"

if SIM_FRAMEBUFFER

config SIM_X11FB
	bool "Use X11 window"
	default n
	---help---
		Use an X11 graphics window to simulate the graphics device"

config SIM_X11NOSHM
	bool "Don't use shared memory with X11"
	default n
	depends on SIM_X11FB
	---help---
		Don't use shared memory with the X11 graphics device emulation."

config SIM_FBHEIGHT
	int "Display height"
	default 240
	---help---
		Simulated display height.  Default: 240

config SIM_FBWIDTH
	int "Display width"
	default 320 if SIM_LCDDRIVER
	default 480 if SIM_FRAMEBUFFER
	---help---
		Simulated width of the display.  Default: 320 or 480

config SIM_FBBPP
	int "Pixel depth in bits"
	default 8
	---help---
		Pixel depth in bits.  Valid choices are 4, 8, 16, 24, or 32.
		If you use the X11 display emulation, the selected BPP must match the BPP
		of your graphics hardware (probably 32 bits).  Default: 8

endif # SIM_FRAMEBUFFER

if SIM_X11FB && INPUT
choice
	prompt "X11 Simulated Input Device"
	default SIM_NOINPUT

config SIM_TOUCHSCREEN
	bool "X11 mouse-based touchscreen emulation"
	---help---
		Support an X11 mouse-based touchscreen emulation.  Also needs INPUT=y

config SIM_AJOYSTICK
	bool "X11 mouse-based analog joystick emulation"
	---help---
		Support an X11 mouse-based anallog joystick emulation.  Also needs INPUT=y`

config SIM_NOINPUT
	bool "No input device"

endchoice # X11 Simulated Input Device
endif # SIM_X11FB && INPUT

config SIM_TCNWAITERS
	bool "Maximum number poll() waiters"
	default 4
	depends on !POLL_DISABLE && SIM_TOUCHSCREEN
	---help---
		The maximum number of threads that can be waiting on poll() for a touchscreen event.
		Default: 4

config SIM_SPIFLASH
	bool "Simulated SPI FLASH with SMARTFS"
	default n
	select FS_SMARTFS
	select MTD_SMART
	---help---
		Adds a simulated SPI FLASH that responds to standard M25 style
		commands on the SPI bus.

choice
	prompt "Simulated SPI FLASH Size"
	default SIM_SPIFLASH_1M
	depends on SIM_SPIFLASH

config SIM_SPIFLASH_1M
	bool "1 MBit (128K Byte)"

config SIM_SPIFLASH_8M
	bool "8 MBit (1M Byte)"

config SIM_SPIFLASH_32M
	bool "32 MBit (4M Byte)"

config SIM_SPIFLASH_64M
	bool "64 MBit (8M Byte)"

config SIM_SPIFLASH_128M
	bool "128 MBit (16M Byte)"

endchoice

config SIM_SPIFLASH_MANUFACTURER
	hex "Hex ID of the FLASH manufacturer code"
	default 0x20
	depends on SIM_SPIFLASH
	---help---
		Allows the simulated FLASH Manufacturer ID to be set.

config SIM_SPIFLASH_MEMORY_TYPE
	hex "Hex ID of the FLASH Memory Type code"
	default 0x20
	depends on SIM_SPIFLASH
	---help---
		Allows the simulated FLASH Memory Type code to be set.

config SIM_SPIFLASH_SECTORSIZE
	int "FLASH Sector Erase Size"
	default 65536
	depends on SIM_SPIFLASH
	---help---
		Sets the large sector erase size that the part simulates.
		This driver simulates SPI devices that have both a large
		sector erase as well as a "sub-sector" (per the datasheet)
		erase size (typically 4K bytes).

config SIM_SPIFLASH_SUBSECTORSIZE
	int "FLASH Sub-Sector Erase Size"
	default 4096
	depends on SIM_SPIFLASH
	---help---
		Sets the smaller sub-sector erase size supported by the
		FLASH emulation

config SIM_SPIFLASH_PAGESIZE
	int "FLASH Write / Program Page Size"
	default 256
	depends on SIM_SPIFLASH
	---help---
		Sets the size of a page program operation.  The page size
		represents the maximum number of bytes that can be sent
		for a program operation.  If more bytes than this are
		sent on a single Page Program, then the address will
		"wrap" causing the initial data sent to be overwritten.
		This is consistent with standard SPI FLASH operation.

endif