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32fe2871 WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
4 | * Marius Groeger <mgroeger@sysgo.de> | |
5 | * | |
6 | * (C) Copyright 2002 | |
7 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
8 | * Alex Zuepke <azu@sysgo.de> | |
9 | * | |
10 | * See file CREDITS for list of people who contributed to this | |
11 | * project. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation; either version 2 of | |
16 | * the License, or (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
26 | * MA 02111-1307 USA | |
27 | */ | |
28 | ||
29 | #include <common.h> | |
30 | #include <asm/arch/pxa-regs.h> | |
31 | ||
32fe2871 | 32 | #ifdef CONFIG_USE_IRQ |
32fe2871 | 33 | #error: interrupts not implemented yet |
32fe2871 WD |
34 | #endif |
35 | ||
32fe2871 WD |
36 | int interrupt_init (void) |
37 | { | |
38 | /* nothing happens here - we don't setup any IRQs */ | |
39 | return (0); | |
40 | } | |
41 | ||
42 | void reset_timer (void) | |
43 | { | |
44 | reset_timer_masked (); | |
45 | } | |
46 | ||
47 | ulong get_timer (ulong base) | |
48 | { | |
f39748ae | 49 | return get_timer_masked () - base; |
32fe2871 WD |
50 | } |
51 | ||
52 | void set_timer (ulong t) | |
53 | { | |
54 | /* nop */ | |
55 | } | |
56 | ||
57 | void udelay (unsigned long usec) | |
58 | { | |
59 | udelay_masked (usec); | |
60 | } | |
61 | ||
62 | ||
63 | void reset_timer_masked (void) | |
64 | { | |
65 | OSCR = 0; | |
66 | } | |
67 | ||
68 | ulong get_timer_masked (void) | |
69 | { | |
70 | return OSCR; | |
71 | } | |
72 | ||
73 | void udelay_masked (unsigned long usec) | |
74 | { | |
75 | ulong tmo; | |
101e8dfa WD |
76 | ulong endtime; |
77 | signed long diff; | |
32fe2871 | 78 | |
ed54e621 WD |
79 | if (usec >= 1000) { |
80 | tmo = usec / 1000; | |
6d0f6bcf | 81 | tmo *= CONFIG_SYS_HZ; |
ed54e621 WD |
82 | tmo /= 1000; |
83 | } else { | |
6d0f6bcf | 84 | tmo = usec * CONFIG_SYS_HZ; |
ed54e621 WD |
85 | tmo /= (1000*1000); |
86 | } | |
32fe2871 | 87 | |
101e8dfa | 88 | endtime = get_timer_masked () + tmo; |
32fe2871 | 89 | |
101e8dfa WD |
90 | do { |
91 | ulong now = get_timer_masked (); | |
92 | diff = endtime - now; | |
93 | } while (diff >= 0); | |
32fe2871 | 94 | } |
fc3e2165 WD |
95 | |
96 | /* | |
97 | * This function is derived from PowerPC code (read timebase as long long). | |
98 | * On ARM it just returns the timer value. | |
99 | */ | |
100 | unsigned long long get_ticks(void) | |
101 | { | |
102 | return get_timer(0); | |
103 | } | |
104 | ||
105 | /* | |
106 | * This function is derived from PowerPC code (timebase clock frequency). | |
107 | * On ARM it returns the number of timer ticks per second. | |
108 | */ | |
109 | ulong get_tbclk (void) | |
110 | { | |
111 | ulong tbclk; | |
6d0f6bcf | 112 | tbclk = CONFIG_SYS_HZ; |
fc3e2165 WD |
113 | return tbclk; |
114 | } |