// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2002 MandrakeSoft S.A.
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "biosvar.h" // GET_EBDA
-#include "util.h" // usleep
+#include "util.h" // mdelay
+#include "bregs.h" // struct bregs
+#include "boot.h" // IPL
-static u8
+static int
check_for_keystroke()
{
struct bregs br;
return !(br.flags & F_ZF);
}
-static u8
+static int
get_keystroke()
{
struct bregs br;
}
static void
-udelay_and_check_for_keystroke(u32 usec, int count)
+usleep(u32 usec)
{
- int i;
- for (i = 1; i <= count; i++) {
- usleep(usec);
+ struct bregs br;
+ memset(&br, 0, sizeof(br));
+ br.ah = 0x86;
+ br.cx = usec >> 16;
+ br.dx = usec;
+ call16_int(0x15, &br);
+}
+
+static int
+timed_check_for_keystroke(int msec)
+{
+ while (msec > 0) {
if (check_for_keystroke())
- break;
+ return 1;
+ usleep(50*1000);
+ msec -= 50;
}
+ return 0;
}
void
interactive_bootmenu()
{
+ if (! CONFIG_BOOTMENU)
+ return;
+
while (check_for_keystroke())
get_keystroke();
printf("Press F12 for boot menu.\n\n");
- udelay_and_check_for_keystroke(500000, 5);
- if (! check_for_keystroke())
+ if (!timed_check_for_keystroke(2500))
return;
- u8 scan_code = get_keystroke();
- if (scan_code != 0x58)
+ int scan_code = get_keystroke();
+ if (scan_code != 0x86)
/* not F12 */
return;
printf("Select boot device:\n\n");
- int count = GET_EBDA(ipl.count);
+ int count = IPL.count;
int i;
for (i = 0; i < count; i++) {
printf("%d. ", i+1);
if (scan_code <= count + 1) {
// Add user choice to the boot order.
u16 choice = scan_code - 1;
- u32 bootorder = GET_EBDA(ipl.bootorder);
- SET_EBDA(ipl.bootorder, (bootorder << 4) | choice);
+ u32 bootorder = IPL.bootorder;
+ IPL.bootorder = (bootorder << 4) | choice;
break;
}
}