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author | Markus Klotzbuecher <mk@denx.de> | 2008-01-09 13:57:10 +0100 |
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committer | Markus Klotzbuecher <mk@denx.de> | 2008-01-09 13:57:10 +0100 |
commit | 6a40ef62c4300e9f606deef0a4618cbc4b514a51 (patch) | |
tree | c01bdd0e773d092f13af05567fa92fb9072df9e0 /lib_sh/time.c | |
parent | 245a362ad3c0c1b84fccc9fec7b623eb14f6e502 (diff) | |
parent | 07eb02687f008721974a2fb54cd7fdc28033ab3c (diff) | |
download | u-boot-imx-6a40ef62c4300e9f606deef0a4618cbc4b514a51.zip u-boot-imx-6a40ef62c4300e9f606deef0a4618cbc4b514a51.tar.gz u-boot-imx-6a40ef62c4300e9f606deef0a4618cbc4b514a51.tar.bz2 |
Merge git://www.denx.de/git/u-boot
Conflicts:
board/tqm5200/tqm5200.c
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; +} |