1 files changed, 0 insertions, 100 deletions
diff --git a/qemu/roms/seabios/src/hw/rtc.c b/qemu/roms/seabios/src/hw/rtc.c
deleted file mode 100644
index 9649a5a79..000000000
--- a/qemu/roms/seabios/src/hw/rtc.c
+++ /dev/null
@@ -1,100 +0,0 @@
-// Support for MC146818 Real Time Clock chip.
-//
-// Copyright (C) 2008-2013  Kevin O'Connor <kevin@koconnor.net>
-// Copyright (C) 2002  MandrakeSoft S.A.
-//
-// This file may be distributed under the terms of the GNU LGPLv3 license.
-
-#include "biosvar.h" // GET_LOW
-#include "rtc.h" // rtc_read
-#include "stacks.h" // yield
-#include "util.h" // timer_calc
-#include "x86.h" // inb
-
-u8
-rtc_read(u8 index)
-{
-    index |= NMI_DISABLE_BIT;
-    outb(index, PORT_CMOS_INDEX);
-    return inb(PORT_CMOS_DATA);
-}
-
-void
-rtc_write(u8 index, u8 val)
-{
-    index |= NMI_DISABLE_BIT;
-    outb(index, PORT_CMOS_INDEX);
-    outb(val, PORT_CMOS_DATA);
-}
-
-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);
-}
-
-int
-rtc_updating(void)
-{
-    // This function checks to see if the update-in-progress bit
-    // is set in CMOS Status Register A.  If not, it returns 0.
-    // If it is set, it tries to wait until there is a transition
-    // to 0, and will return 0 if such a transition occurs.  A -1
-    // is returned only after timing out.  The maximum period
-    // that this bit should be set is constrained to (1984+244)
-    // useconds, but we wait for longer just to be sure.
-
-    if ((rtc_read(CMOS_STATUS_A) & RTC_A_UIP) == 0)
-        return 0;
-    u32 end = timer_calc(15);
-    for (;;) {
-        if ((rtc_read(CMOS_STATUS_A) & RTC_A_UIP) == 0)
-            return 0;
-        if (timer_check(end))
-            // update-in-progress never transitioned to 0
-            return -1;
-        yield();
-    }
-}
-
-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);
-    rtc_read(CMOS_STATUS_D);
-}
-
-int RTCusers VARLOW;
-
-void
-rtc_use(void)
-{
-    if (!CONFIG_RTC_TIMER)
-        return;
-    int count = GET_LOW(RTCusers);
-    SET_LOW(RTCusers, count+1);
-    if (count)
-        return;
-    // Turn on the Periodic Interrupt timer
-    rtc_mask(CMOS_STATUS_B, 0, RTC_B_PIE);
-}
-
-void
-rtc_release(void)
-{
-    if (!CONFIG_RTC_TIMER)
-        return;
-    int count = GET_LOW(RTCusers);
-    SET_LOW(RTCusers, count-1);
-    if (count != 1)
-        return;
-    // Clear the Periodic Interrupt.
-    rtc_mask(CMOS_STATUS_B, RTC_B_PIE, 0);
-}