Adding Kconfig root file.

This commit adds the Kconfig root file.

Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
Change-Id: Id9478012376bfd19475bf08fd75aacad9048ce27

Kconfig

@@ -0,0 +1,116 @@
+mainmenu "Tiny Mountain Build Options"
+
+source "kernel/Kconfig"
+
+source "misc/Kconfig"
+
+source "arch/Kconfig"
+
+menu "Debugging Options"
+
+config STDOUT_CONSOLE
+	bool
+	prompt "Send stdout to console"
+	default n
+	help
+	This option directs standard output (e.g. printf) to the console
+	device, rather than suppressing in entirely.
+
+config ASSERT
+	bool
+	prompt "Enable __ASSERT() macro"
+	default n
+	help
+	This enables the __ASSERT() macro in the kernel code. If an assertion
+	fails, the calling thread is put on an infinite tight loop. Since
+	enabling this adds a significant footprint, it should only be enabled
+	in a non-production system.
+
+config ASSERT_LEVEL
+	int
+	prompt "__ASSERT() level"
+	default 1
+	depends on ASSERT
+	help
+	This option specifies the assertion level used by the __ASSERT()
+	macro. It can be set to one of three possible values:
+
+	Level 0: off
+	Level 1: on + warning in every file that includes __assert.h
+	Level 2: on + no warning
+
+endmenu
+
+menu "System Monitoring Options"
+
+config  BOOT_TIME_MEASUREMENT
+	bool
+	prompt "Boot time measurements [EXPERIMENTAL]"
+	default n
+	depends on EXPERIMENTAL
+	help
+	This option enables the recording of timestamps during system start
+	up. The global variable __start_tsc records the time TiMo begins
+	executing, while __main_tsc records when main() begins executing,
+	and __idle_tsc records when the CPU becomes idle. All values are
+	recorded in terms of CPU clock cycles since system reset.
+
+config  CPU_CLOCK_FREQ_MHZ
+	int
+	prompt "CPU CLock Frequency in MHz"
+	default 20
+	depends on BOOT_TIME_MEASUREMENT
+	help
+	This option specifies the CPU Clock Frequency in MHz in order to
+	convert Intel RDTSC timestamp to microseconds.
+
+endmenu
+
+menu "Compile and Link Features"
+
+config  COMPILER_OPT
+	string
+	prompt "Custom compiler options"
+	default ""
+	help
+	This option is a free-form string that is passed to the compiler
+	when building all parts of a project (i.e. kernel, LKMs, and USAPs).
+	The compiler options specified by this string supplement the
+	pre-defined set of compiler supplied by the TiMo build system,
+	and can be used to change compiler optimization, warning and error
+	messages, and so on.
+
+	A given LKM or USAP can override this setting by means of the
+	OVERRIDE_COMPILER_OPT make variable in its Makefile.
+
+config  SECTION_GARBAGE_COLLECTION
+	bool
+	prompt "ELF section garbage collection"
+	default y
+	help
+	This option enables the compiler to place each function and data
+	item into its own ELF section, which then allows the linker to
+	discard any sections that are not directly referenced. Enabling
+	this option should significantly reduce the final image size,
+	especially in situations when only a relatively few number of
+	APIs in the object modules are actually referenced.
+
+	Certain host tools expect the presence of various symbols in
+	the ELF image, regardless of image configuration or composition.
+	Enabling this option may cause these host tools to end abnormally
+	if the expected symbols have been discarded.
+
+endmenu
+
+source "drivers/Kconfig"
+
+config  EXPERIMENTAL
+	bool
+	prompt "Experimental Options"
+	default n
+	help
+		This option enables all experimental options in the project.
+		If it is disabled, all options marked as EXPERIMENTAL will
+		be disabled.
+		If it is enabled, all options marked as EXPERIMENTAL will
+		be available for selection.