This allows us to act like a serial device: we get tab chars and CTRL+C and respond appropriately.
Signed-off-by: Mike Frysinger vapier@gentoo.org --- arch/sandbox/cpu/os.c | 34 ++++++++++++++++++++++++++++++++++ drivers/serial/sandbox.c | 1 + include/os.h | 5 +++++ 3 files changed, 40 insertions(+), 0 deletions(-)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 6c175d4..f80faac 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -21,6 +21,7 @@
#include <fcntl.h> #include <stdlib.h> +#include <termios.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> @@ -53,3 +54,36 @@ void os_exit(int exit_code) { exit(exit_code); } + +/* Restore tty state when we exit */ +static struct termios orig_term; + +static void os_fd_restore(void) +{ + tcsetattr(0, TCSANOW, &orig_term); +} + +/* Put tty into raw mode so <tab> and <ctrl+c> work */ +void os_tty_raw(int fd) +{ + static int setup = 0; + struct termios term; + + if (setup) + return; + setup = 1; + + /* If not a tty, don't complain */ + if (tcgetattr(fd, &orig_term)) + return; + + term = orig_term; + term.c_iflag = IGNBRK | IGNPAR; + term.c_oflag = OPOST | ONLCR; + term.c_cflag = CS8 | CREAD | CLOCAL; + term.c_lflag = 0; + if (tcsetattr(fd, TCSANOW, &term)) + return; + + atexit(os_fd_restore); +} diff --git a/drivers/serial/sandbox.c b/drivers/serial/sandbox.c index 814a0f9..1927c16 100644 --- a/drivers/serial/sandbox.c +++ b/drivers/serial/sandbox.c @@ -30,6 +30,7 @@
int serial_init(void) { + os_tty_raw(0); return 0; }
diff --git a/include/os.h b/include/os.h index 3ea6d2d..d5df22f 100644 --- a/include/os.h +++ b/include/os.h @@ -71,3 +71,8 @@ int os_close(int fd); * @param exit_code exit code for U-Boot */ void os_exit(int exit_code); + +/** + * Put tty into raw mode to mimic serial console better + */ +void os_tty_raw(int fd);