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authorwdenk <wdenk>2001-10-15 12:12:42 +0000
committerwdenk <wdenk>2001-10-15 12:12:42 +0000
commitbca52d65cb24542cbe96584d08481a487042a593 (patch)
tree561ee7aed54489a197548155d9f9a4d4ab1a0950 /tools/gdb
parentfbd71bf6796c12242e7e5f047cbfc28a0930c415 (diff)
downloadu-boot-linaro-stable-bca52d65cb24542cbe96584d08481a487042a593.tar.gz
Initial revision
Diffstat (limited to 'tools/gdb')
-rw-r--r--tools/gdb/serial.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/tools/gdb/serial.c b/tools/gdb/serial.c
new file mode 100644
index 000000000..88895bb9f
--- /dev/null
+++ b/tools/gdb/serial.c
@@ -0,0 +1,126 @@
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/time.h>
+#include "serial.h"
+
+#if defined(__sun__) || \
+ defined(__OpenBSD__) || \
+ defined(__FreeBSD__) || \
+ defined(__NetBSD__) || \
+ defined(__APPLE__)
+static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, { 0 } };
+#else
+static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, 0 };
+#endif
+
+static struct speedmap {
+ char *str;
+ speed_t val;
+} speedmap[] = {
+ { "50", B50 }, { "75", B75 }, { "110", B110 },
+ { "134", B134 }, { "150", B150 }, { "200", B200 },
+ { "300", B300 }, { "600", B600 }, { "1200", B1200 },
+ { "1800", B1800 }, { "2400", B2400 }, { "4800", B4800 },
+ { "9600", B9600 }, { "19200", B19200 }, { "38400", B38400 },
+ { "57600", B57600 },
+#ifdef B76800
+ { "76800", B76800 },
+#endif
+ { "115200", B115200 },
+#ifdef B153600
+ { "153600", B153600 },
+#endif
+ { "230400", B230400 },
+#ifdef B307200
+ { "307200", B307200 },
+#endif
+#ifdef B460800
+ { "460800", B460800 }
+#endif
+};
+static int nspeeds = sizeof speedmap / sizeof speedmap[0];
+
+speed_t
+cvtspeed(char *str)
+{
+ struct speedmap *smp = speedmap, *esmp = &speedmap[nspeeds];
+
+ while (smp < esmp) {
+ if (strcmp(str, smp->str) == 0)
+ return (smp->val);
+ smp++;
+ }
+ return B0;
+}
+
+int
+serialopen(char *device, speed_t speed)
+{
+ int fd;
+
+ if (cfsetospeed(&tios, speed) < 0)
+ return -1;
+
+ if ((fd = open(device, O_RDWR)) < 0)
+ return -1;
+
+ if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
+ (void)close(fd);
+ return -1;
+ }
+
+ return fd;
+}
+
+int
+serialreadchar(int fd, int timeout)
+{
+ fd_set fds;
+ struct timeval tv;
+ int n;
+ char ch;
+
+ tv.tv_sec = timeout;
+ tv.tv_usec = 0;
+
+ FD_ZERO(&fds);
+ FD_SET(fd, &fds);
+
+ /* this is a fucking horrible quick hack - fix this */
+
+ if ((n = select(fd + 1, &fds, 0, 0, &tv)) < 0)
+ return SERIAL_ERROR;
+
+ if (n == 0)
+ return SERIAL_TIMEOUT;
+
+ if ((n = read(fd, &ch, 1)) < 0)
+ return SERIAL_ERROR;
+
+ if (n == 0)
+ return SERIAL_EOF;
+
+ return ch;
+}
+
+int
+serialwrite(int fd, char *buf, int len)
+{
+ int n;
+
+ do {
+ n = write(fd, buf, len);
+ if (n < 0)
+ return 1;
+ len -= n;
+ buf += n;
+ } while (len > 0);
+ return 0;
+}
+
+int
+serialclose(int fd)
+{
+ return close(fd);
+}