# Kconfig - x86 core configuration options

#
# Copyright (c) 2014-2015 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#

config NESTED_INTERRUPTS
	bool
	prompt "Enable nested interrupts"
	default y
	help
	  This option enables support for nested interrupts.

config EXCEPTION_DEBUG
	bool
	prompt "Unhandled exception debugging"
	default y
	depends on PRINTK
	help
	  Install handlers for various CPU exception/trap vectors to
	  make debugging them easier, at a small expense in code size.
	  This prints out the specific exception vector and any associated
	  error codes.

menu "Memory Layout Options"

config IDT_NUM_VECTORS
	int
	prompt "Number of IDT vectors"
	default 256
	range 32 256
	help
	  This option specifies the number of interrupt vector entries in the
	  Interrupt Descriptor Table (IDT). By default all 256 vectors are
	  supported in an IDT requiring 2048 bytes of memory.

config MAX_IRQ_LINES
	int
	prompt "Number of IRQ lines"
	default 128
	range 0 256
	help
	  This option specifies the number of IRQ lines in the system.
	  It can be tuned to save some bytes in ROM, as it determines the
	  size of the _irq_to_interrupt_vector_table, which is used at runtime
	  to program to the PIC the association between vectors and
	  interrupts.

config RAM_SIZE
	int "Amount of RAM given to the kernel (in kB)"
	help
	  This option specifies the amount of RAM given to the kernel. It must
	  not exceed the amount available on the target.  When running an XIP
	  kernel, it must be large enough to contain the data, bss and noinit
	  sections.  When not running an XIP kernel, it must be large enough to
	  contain the full image.

	  The default value is specified by the board.

config ROM_SIZE
	int "Amount of ROM given to the kernel (in kB)" if XIP
	help
	  This option specifies the amount of ROM given to the kernel. It must
	  not exceed the amount available on the target.  It must also be large
	  enough to contain the full image.

	  The default value is specified by the board.

config SET_GDT
	bool
	prompt "Setup GDT as part of boot process"
	default y
	help
	  This option sets up the GDT as part of the boot process. However,
	  this may conflict with some security scenarios where the GDT is
	  already appropriately set by an earlier bootloader stage, in which
	  case this should be disabled. If disabled, the global _gdt pointer
	  will not be available.

config GDT_DYNAMIC
	bool
	prompt "Store GDT in RAM so that it can be modified"
	depends on SET_GDT
	default n
	help
	  This option stores the GDT in RAM instead of ROM, so that it may
	  be modified at runtime at the expense of some memory.

endmenu