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author | Wolfgang Denk <wd@denx.de> | 2008-12-13 00:26:19 +0100 |
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committer | Wolfgang Denk <wd@denx.de> | 2008-12-13 00:26:19 +0100 |
commit | f6704e49d6221fa650434e75faa5a3e2d7002f1b (patch) | |
tree | ea8c82808cf1bb8397d41b0c293c318d90c3cf9e /cpu/sh4/time.c | |
parent | 8e9c63b40059e81b870685b54d99589152c5b750 (diff) | |
parent | d8bbc51c7ba9b737a20984333d19fe28a3526431 (diff) | |
download | u-boot-imx-f6704e49d6221fa650434e75faa5a3e2d7002f1b.zip u-boot-imx-f6704e49d6221fa650434e75faa5a3e2d7002f1b.tar.gz u-boot-imx-f6704e49d6221fa650434e75faa5a3e2d7002f1b.tar.bz2 |
Merge branch 'master' of git://git.denx.de/u-boot-sh
Diffstat (limited to 'cpu/sh4/time.c')
-rw-r--r-- | cpu/sh4/time.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/cpu/sh4/time.c b/cpu/sh4/time.c deleted file mode 100644 index 77e0ae2..0000000 --- a/cpu/sh4/time.c +++ /dev/null @@ -1,98 +0,0 @@ -/* - * (C) Copyright 2007 - * Nobobuhiro Iwamatsu <iwamatsu@nigauri.org> - * - * (C) Copyright 2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * 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/processor.h> - -#define TMU_MAX_COUNTER (~0UL) - -static void tmu_timer_start (unsigned int timer) -{ - if (timer > 2) - return; - - *((volatile unsigned char *) TSTR) |= (1 << timer); -} - -static void tmu_timer_stop (unsigned int timer) -{ - u8 val = *((volatile u8 *)TSTR); - if (timer > 2) - return; - *((volatile unsigned char *)TSTR) = val &~(1 << timer); -} - -int timer_init (void) -{ - /* Divide clock by 4 */ - *(volatile u16 *)TCR0 = 0; - - tmu_timer_stop(0); - tmu_timer_start(0); - return 0; -} - -/* - In theory we should return a true 64bit value (ie something that doesn't - overflow). However, we don't. Therefore if TMU runs at fastest rate of - 6.75 MHz this value will wrap after u-boot has been running for approx - 10 minutes. -*/ -unsigned long long get_ticks (void) -{ - return (0 - *((volatile u32 *) TCNT0)); -} - -unsigned long get_timer (unsigned long base) -{ - return ((0 - *((volatile u32 *) TCNT0)) - base); -} - -void set_timer (unsigned long t) -{ - *((volatile unsigned int *) TCNT0) = (0 - t); -} - -void reset_timer (void) -{ - tmu_timer_stop(0); - set_timer (0); - tmu_timer_start(0); -} - -void udelay (unsigned long usec) -{ - unsigned int start = get_timer (0); - unsigned int end = start + (usec * ((CONFIG_SYS_HZ + 500000) / 1000000)); - - while (get_timer (0) < end) - continue; -} - -unsigned long get_tbclk (void) -{ - return CONFIG_SYS_HZ; -} |