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author | Sebastian Schmelzer | 2010-10-25 16:53:54 +0200 |
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committer | Sebastian Schmelzer | 2010-10-25 16:53:54 +0200 |
commit | 3050a9253437f4a4b5ad4bf3b3efdc3c660a5137 (patch) | |
tree | 91ac22153e416aac7ca20916b314b5e2ffa871b1 /contrib/syslinux-4.02/gpxe/src/arch/i386/interface/pcbios/bios_nap.c | |
download | preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.tar.gz preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.tar.xz preboot-3050a9253437f4a4b5ad4bf3b3efdc3c660a5137.zip |
Diffstat (limited to 'contrib/syslinux-4.02/gpxe/src/arch/i386/interface/pcbios/bios_nap.c')
-rw-r--r-- | contrib/syslinux-4.02/gpxe/src/arch/i386/interface/pcbios/bios_nap.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/interface/pcbios/bios_nap.c b/contrib/syslinux-4.02/gpxe/src/arch/i386/interface/pcbios/bios_nap.c new file mode 100644 index 0000000..e38cac7 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/interface/pcbios/bios_nap.c @@ -0,0 +1,16 @@ +#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 ); |