src/arch/i386/interface/pcbios/bios_nap.c

#include <gpxe/nap.h>
#include <realmode.h>

FILE_LICENCE ( GPL2_OR_LATER );

/**
 * Save power by halting the CPU until the next interrupt
 *
 */
static void bios_cpu_nap ( void ) {
	__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
					   "hlt\n\t"
					   "cli\n\t" ) : : );
}

PROVIDE_NAP ( pcbios, cpu_nap, bios_cpu_nap );
[nap] Formalise the CPU sleeping API 2008-10-12 23:34:45 +01:00			`#include <gpxe/nap.h>`
			`#include <realmode.h>`

[legal] Add a selection of FILE_LICENCE declarations Add FILE_LICENCE declarations to almost all files that make up the various standard builds of gPXE. 2009-05-01 15:41:06 +01:00			`FILE_LICENCE ( GPL2_OR_LATER );`

[nap] Formalise the CPU sleeping API 2008-10-12 23:34:45 +01:00			`/**`
			`* Save power by halting the CPU until the next interrupt`
			`*`
			`*/`
			`static void bios_cpu_nap ( void ) {`
			`__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"`
			`"hlt\n\t"`
			`"cli\n\t" ) : : );`
			`}`

			`PROVIDE_NAP ( pcbios, cpu_nap, bios_cpu_nap );`