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fixed 2.88 MB boot (aka FreeBSD 5.2.1 boot fix) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@849 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-05-23 16:26:20 +00:00
parent 5b60212f2a
commit 777428f2d2
1 changed files with 25 additions and 29 deletions
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54
hw/pc.c
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@ -76,6 +76,30 @@ static inline int to_bcd(RTCState *s, int a)
return ((a / 10) << 4) | (a % 10);
}
static int cmos_get_fd_drive_type(int fd0)
{
int val;
switch (fd0) {
case 0:
/* 1.44 Mb 3"5 drive */
val = 4;
break;
case 1:
/* 2.88 Mb 3"5 drive */
val = 5;
break;
case 2:
/* 1.2 Mb 5"5 drive */
val = 2;
break;
default:
val = 0;
break;
}
return val;
}
static void cmos_init(int ram_size, int boot_device)
{
RTCState *s = rtc_state;
@ -133,35 +157,7 @@ static void cmos_init(int ram_size, int boot_device)
fd0 = fdctrl_get_drive_type(floppy_controller, 0);
fd1 = fdctrl_get_drive_type(floppy_controller, 1);
val = 0;
switch (fd0) {
case 0:
/* 1.44 Mb 3"5 drive */
val |= 0x40;
break;
case 1:
/* 2.88 Mb 3"5 drive */
val |= 0x60;
break;
case 2:
/* 1.2 Mb 5"5 drive */
val |= 0x20;
break;
}
switch (fd1) {
case 0:
/* 1.44 Mb 3"5 drive */
val |= 0x04;
break;
case 1:
/* 2.88 Mb 3"5 drive */
val |= 0x06;
break;
case 2:
/* 1.2 Mb 5"5 drive */
val |= 0x02;
break;
}
val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
rtc_set_memory(s, 0x10, val);
val = 0;