blob: a1d324b51f6b8dd3c2524d7ebb3a488ca8d2d8c8 [file] [log] [blame]
Simon Glass7a9219c2011-10-03 19:26:44 +00001/*
2 * Copyright (c) 2011 The Chromium OS Authors.
3 * See file CREDITS for list of people who contributed to this
4 * project.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
19 * MA 02111-1307 USA
20 */
21
Simon Glasse1012472012-01-10 15:54:05 -080022#include <errno.h>
Simon Glass7a9219c2011-10-03 19:26:44 +000023#include <fcntl.h>
24#include <stdlib.h>
Mike Frysingerab06a752011-10-26 00:21:29 +000025#include <termios.h>
Matthias Weisserd99a6872011-11-29 12:16:40 +010026#include <time.h>
Simon Glasse1012472012-01-10 15:54:05 -080027#include <unistd.h>
Matthias Weisser21899b12011-11-05 11:40:34 +010028#include <sys/mman.h>
Simon Glasse1012472012-01-10 15:54:05 -080029#include <sys/stat.h>
30#include <sys/types.h>
Matthias Weisserd99a6872011-11-29 12:16:40 +010031#include <linux/types.h>
Simon Glass7a9219c2011-10-03 19:26:44 +000032
33#include <os.h>
34
35/* Operating System Interface */
36
37ssize_t os_read(int fd, void *buf, size_t count)
38{
39 return read(fd, buf, count);
40}
41
42ssize_t os_write(int fd, const void *buf, size_t count)
43{
44 return write(fd, buf, count);
45}
46
47int os_open(const char *pathname, int flags)
48{
49 return open(pathname, flags);
50}
51
52int os_close(int fd)
53{
54 return close(fd);
55}
56
57void os_exit(int exit_code)
58{
59 exit(exit_code);
60}
Mike Frysingerab06a752011-10-26 00:21:29 +000061
62/* Restore tty state when we exit */
63static struct termios orig_term;
64
65static void os_fd_restore(void)
66{
67 tcsetattr(0, TCSANOW, &orig_term);
68}
69
70/* Put tty into raw mode so <tab> and <ctrl+c> work */
71void os_tty_raw(int fd)
72{
73 static int setup = 0;
74 struct termios term;
75
76 if (setup)
77 return;
78 setup = 1;
79
80 /* If not a tty, don't complain */
81 if (tcgetattr(fd, &orig_term))
82 return;
83
84 term = orig_term;
85 term.c_iflag = IGNBRK | IGNPAR;
86 term.c_oflag = OPOST | ONLCR;
87 term.c_cflag = CS8 | CREAD | CLOCAL;
88 term.c_lflag = 0;
89 if (tcsetattr(fd, TCSANOW, &term))
90 return;
91
92 atexit(os_fd_restore);
93}
Matthias Weisser21899b12011-11-05 11:40:34 +010094
95void *os_malloc(size_t length)
96{
97 return mmap(NULL, length, PROT_READ | PROT_WRITE,
98 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
99}
Matthias Weisserd99a6872011-11-29 12:16:40 +0100100
101void os_usleep(unsigned long usec)
102{
103 usleep(usec);
104}
105
106u64 os_get_nsec(void)
107{
108#if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
109 struct timespec tp;
110 if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
111 struct timeval tv;
112
113 gettimeofday(&tv, NULL);
114 tp.tv_sec = tv.tv_sec;
115 tp.tv_nsec = tv.tv_usec * 1000;
116 }
117 return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
118#else
119 struct timeval tv;
120 gettimeofday(&tv, NULL);
121 return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
122#endif
123}