diff options
Diffstat (limited to 'grub-core/kern/mips/init.c')
-rw-r--r-- | grub-core/kern/mips/init.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/grub-core/kern/mips/init.c b/grub-core/kern/mips/init.c new file mode 100644 index 0000000..14b8752 --- /dev/null +++ b/grub-core/kern/mips/init.c @@ -0,0 +1,38 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/kernel.h> +#include <grub/env.h> +#include <grub/cpu/time.h> +#include <grub/cpu/mips.h> + +/* FIXME: use interrupt to count high. */ +grub_uint64_t +grub_get_rtc (void) +{ + static grub_uint32_t high = 0; + static grub_uint32_t last = 0; + grub_uint32_t low; + + asm volatile ("mfc0 %0, " GRUB_CPU_MIPS_COP0_TIMER_COUNT : "=r" (low)); + if (low < last) + high++; + last = low; + + return (((grub_uint64_t) high) << 32) | low; +} |