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1 | /* |
2 | * (C) Copyright 2007 Michal Simek | |
3 | * | |
4 | * Michal SIMEK <monstr@monstr.eu> | |
5 | * | |
6 | * See file CREDITS for list of people who contributed to this | |
7 | * project. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of | |
12 | * the License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
22 | * MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <common.h> | |
26 | #include <asm/microblaze_timer.h> | |
42efed61 | 27 | #include <asm/microblaze_intc.h> |
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28 | |
29 | volatile int timestamp = 0; | |
30 | ||
31 | void reset_timer (void) | |
32 | { | |
33 | timestamp = 0; | |
34 | } | |
35 | ||
6d0f6bcf | 36 | #ifdef CONFIG_SYS_TIMER_0 |
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37 | ulong get_timer (ulong base) |
38 | { | |
39 | return (timestamp - base); | |
40 | } | |
1c1100d2 MS |
41 | #else |
42 | ulong get_timer (ulong base) | |
43 | { | |
44 | return (timestamp++ - base); | |
45 | } | |
46 | #endif | |
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47 | |
48 | void set_timer (ulong t) | |
49 | { | |
50 | timestamp = t; | |
51 | } | |
52 | ||
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53 | #ifdef CONFIG_SYS_INTC_0 |
54 | #ifdef CONFIG_SYS_TIMER_0 | |
55 | microblaze_timer_t *tmr = (microblaze_timer_t *) (CONFIG_SYS_TIMER_0_ADDR); | |
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56 | |
57 | void timer_isr (void *arg) | |
58 | { | |
59 | timestamp++; | |
60 | tmr->control = tmr->control | TIMER_INTERRUPT; | |
61 | } | |
62 | ||
63 | void timer_init (void) | |
64 | { | |
6d0f6bcf | 65 | tmr->loadreg = CONFIG_SYS_TIMER_0_PRELOAD; |
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66 | tmr->control = TIMER_INTERRUPT | TIMER_RESET; |
67 | tmr->control = | |
68 | TIMER_ENABLE | TIMER_ENABLE_INTR | TIMER_RELOAD | TIMER_DOWN_COUNT; | |
69 | reset_timer (); | |
6d0f6bcf | 70 | install_interrupt_handler (CONFIG_SYS_TIMER_0_IRQ, timer_isr, (void *)tmr); |
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71 | } |
72 | #endif | |
73 | #endif |