diff options
Diffstat (limited to 'qemu/roms/seabios/src/hw/rtc.c')
| -rw-r--r-- | qemu/roms/seabios/src/hw/rtc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/hw/rtc.c b/qemu/roms/seabios/src/hw/rtc.c index 628d5429f..9649a5a79 100644 --- a/qemu/roms/seabios/src/hw/rtc.c +++ b/qemu/roms/seabios/src/hw/rtc.c @@ -30,6 +30,7 @@ rtc_write(u8 index, u8 val) void rtc_mask(u8 index, u8 off, u8 on) { + index |= NMI_DISABLE_BIT; outb(index, PORT_CMOS_INDEX); u8 val = inb(PORT_CMOS_DATA); outb((val & ~off) | on, PORT_CMOS_DATA); @@ -62,6 +63,8 @@ rtc_updating(void) void rtc_setup(void) { + if (!CONFIG_RTC_TIMER) + return; rtc_write(CMOS_STATUS_A, 0x26); // 32,768Khz src, 976.5625us updates rtc_mask(CMOS_STATUS_B, ~RTC_B_DSE, RTC_B_24HR); rtc_read(CMOS_STATUS_C); @@ -73,6 +76,8 @@ int RTCusers VARLOW; void rtc_use(void) { + if (!CONFIG_RTC_TIMER) + return; int count = GET_LOW(RTCusers); SET_LOW(RTCusers, count+1); if (count) @@ -84,6 +89,8 @@ rtc_use(void) void rtc_release(void) { + if (!CONFIG_RTC_TIMER) + return; int count = GET_LOW(RTCusers); SET_LOW(RTCusers, count-1); if (count != 1) |