Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / arch / i386 / include / ipxe / bios_timer.h

diff --git a/qemu/roms/ipxe/src/arch/i386/include/ipxe/bios_timer.h b/qemu/roms/ipxe/src/arch/i386/include/ipxe/bios_timer.h
new file mode 100644 (file)
index 0000000..f9fc804
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/i386/include/ipxe/bios_timer.h
@@ -0,0 +1,44 @@
+#ifndef _IPXE_BIOS_TIMER_H
+#define _IPXE_BIOS_TIMER_H
+
+/** @file
+ *
+ * BIOS timer
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#ifdef TIMER_PCBIOS
+#define TIMER_PREFIX_pcbios
+#else
+#define TIMER_PREFIX_pcbios __pcbios_
+#endif
+
+#include <ipxe/timer2.h>
+
+/**
+ * Delay for a fixed number of microseconds
+ *
+ * @v usecs            Number of microseconds for which to delay
+ */
+static inline __always_inline void
+TIMER_INLINE ( pcbios, udelay ) ( unsigned long usecs ) {
+       /* BIOS timer is not high-resolution enough for udelay(), so
+        * we use timer2
+        */
+       timer2_udelay ( usecs );
+}
+
+/**
+ * Get number of ticks per second
+ *
+ * @ret ticks_per_sec  Number of ticks per second
+ */
+static inline __always_inline unsigned long
+TIMER_INLINE ( pcbios, ticks_per_sec ) ( void ) {
+       /* BIOS timer ticks over at 18.2 ticks per second */
+       return 18;
+}
+
+#endif /* _IPXE_BIOS_TIMER_H */