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author | Wolfgang Denk <wd@denx.de> | 2007-12-27 01:12:56 +0100 |
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committer | Wolfgang Denk <wd@denx.de> | 2007-12-27 01:12:56 +0100 |
commit | 81b38be8631a0b809c97ab3d929f491373d7314f (patch) | |
tree | 0dd6444e2b602dcd06524f57c234b1f3b18ceb83 /lib_sh/time.c | |
parent | f77ac3d657e9b1d40012153e872a2118cca10a3d (diff) | |
parent | 29592ecba3b932b9b152bcec6c0c0806412db4a3 (diff) | |
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Merge branch 'master' of git://www.denx.de/git/u-boot-sh
Conflicts:
MAINTAINERS
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'lib_sh/time.c')
-rw-r--r-- | lib_sh/time.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/lib_sh/time.c b/lib_sh/time.c new file mode 100644 index 0000000..3d33918 --- /dev/null +++ b/lib_sh/time.c @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2007 + * Nobuhiro Iwamatsu <iwamatsu@nigauri.org> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program 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 2 of + * the License, or (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/processer.h> + +static void tmu_timer_start (unsigned int timer) +{ + if (timer > 2) + return; + + *((volatile unsigned char *) TSTR0) |= (1 << timer); +} + +int timer_init (void) +{ + *(volatile u16 *)TCR0 = 0; + + tmu_timer_start (0); + return 0; +} + +unsigned long long get_ticks (void) +{ + return (0 - *((volatile unsigned int *) TCNT0)); +} + +unsigned long get_timer (unsigned long base) +{ + return ((0 - *((volatile unsigned int *) TCNT0)) - base); +} + +void set_timer (unsigned long t) +{ + *((volatile unsigned int *) TCNT0) = (0 - t); +} + +void reset_timer (void) +{ + set_timer (0); +} + +void udelay (unsigned long usec) +{ + unsigned int start = get_timer (0); + unsigned int end = start + (usec * ((CFG_HZ + 500000) / 1000000)); + + while (get_timer (0) < end) + continue; +} + +unsigned long get_tbclk (void) +{ + return CFG_HZ; +} |