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Diffstat (limited to 'payloads/libpayload/drivers/serial/serial.c')
-rw-r--r-- | payloads/libpayload/drivers/serial/serial.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/serial/serial.c b/payloads/libpayload/drivers/serial/serial.c new file mode 100644 index 0000000000..6735e3f083 --- /dev/null +++ b/payloads/libpayload/drivers/serial/serial.c @@ -0,0 +1,124 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * Copyright (C) 2008 Ulf Jordan <jordan@chalmers.se> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <libpayload-config.h> +#include <libpayload.h> + +/* These are thinly veiled vt100 functions used by curses */ + +#define VT100_CLEAR "\e[H\e[J" +/* These defines will fail if you use bold and reverse at the same time. + * Switching off one of them will switch off both. tinycurses knows about + * this and does the right thing. + */ +#define VT100_SBOLD "\e[1m" +#define VT100_EBOLD "\e[m" +#define VT100_SREVERSE "\e[7m" +#define VT100_EREVERSE "\e[m" +#define VT100_CURSOR_ADDR "\e[%d;%dH" +#define VT100_CURSOR_ON "\e[?25l" +#define VT100_CURSOR_OFF "\e[?25h" +/* The following smacs/rmacs are actually for xterm; a real vt100 has + enacs=\E(B\E)0, smacs=^N, rmacs=^O. */ +#define VT100_SMACS "\e(0" +#define VT100_RMACS "\e(B" +/* A vt100 doesn't do color, setaf/setab below are from xterm-color. */ +#define VT100_SET_COLOR "\e[3%d;4%dm" + +static void serial_putcmd(const char *str) +{ + while (*str) + serial_putchar(*(str++)); +} + +void serial_clear(void) +{ + serial_putcmd(VT100_CLEAR); +} + +void serial_start_bold(void) +{ + serial_putcmd(VT100_SBOLD); +} + +void serial_end_bold(void) +{ + serial_putcmd(VT100_EBOLD); +} + +void serial_start_reverse(void) +{ + serial_putcmd(VT100_SREVERSE); +} + +void serial_end_reverse(void) +{ + serial_putcmd(VT100_EREVERSE); +} + +void serial_start_altcharset(void) +{ + serial_putcmd(VT100_SMACS); +} + +void serial_end_altcharset(void) +{ + serial_putcmd(VT100_RMACS); +} + +/** + * Set the foreground and background colors on the serial console. + * + * @param fg Foreground color number. + * @param bg Background color number. + */ +void serial_set_color(short fg, short bg) +{ + char buffer[32]; + + snprintf(buffer, sizeof(buffer), VT100_SET_COLOR, fg, bg); + serial_putcmd(buffer); +} + +void serial_set_cursor(int y, int x) +{ + char buffer[32]; + + snprintf(buffer, sizeof(buffer), VT100_CURSOR_ADDR, y + 1, x + 1); + serial_putcmd(buffer); +} + +void serial_cursor_enable(int state) +{ + if (state) + serial_putcmd(VT100_CURSOR_ON); + else + serial_putcmd(VT100_CURSOR_OFF); +} |