39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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* VasEBoot -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* VasEBoot is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* VasEBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with VasEBoot. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <VasEBoot/kernel.h>
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#include <VasEBoot/env.h>
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#include <VasEBoot/cpu/time.h>
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#include <VasEBoot/cpu/mips.h>
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/* FIXME: use interrupt to count high. */
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VasEBoot_uint64_t
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VasEBoot_get_rtc (void)
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{
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static VasEBoot_uint32_t high = 0;
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static VasEBoot_uint32_t last = 0;
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VasEBoot_uint32_t low;
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asm volatile ("mfc0 %0, " VasEBoot_CPU_MIPS_COP0_TIMER_COUNT : "=r" (low));
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if (low < last)
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high++;
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last = low;
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return (((VasEBoot_uint64_t) high) << 32) | low;
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}
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