diff options
Diffstat (limited to 'payloads/libpayload/drivers/serial.c')
| -rw-r--r-- | payloads/libpayload/drivers/serial.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/serial.c b/payloads/libpayload/drivers/serial.c index a97e7dd808..f7b12eb561 100644 --- a/payloads/libpayload/drivers/serial.c +++ b/payloads/libpayload/drivers/serial.c @@ -35,6 +35,25 @@ #define DIVISOR (115200 / CONFIG_SERIAL_BAUD_RATE) #endif +/* This is a hack - we convert the drawing characters to ASCII */ + +static unsigned char translate_special_chars(unsigned char c) +{ + switch(c) { + case 196: + return '-'; + case 179: + return '|'; + case 218: + case 191: + case 192: + case 217: + return '+'; + default: + return ' '; + } +} + void serial_init(void) { #ifdef CONFIG_SERIAL_SET_SPEED @@ -61,6 +80,9 @@ void serial_init(void) void serial_putchar(unsigned char c) { + if (c > 127) + c = translate_special_chars(c); + while ((inb(IOBASE + 0x05) & 0x20) == 0) ; outb(c, IOBASE); } @@ -75,3 +97,38 @@ int serial_getchar(void) while (!serial_havechar()) ; return (int)inb(IOBASE); } + +/* These are thinly veiled vt100 functions used by curses */ + +#define VT100_CLEAR "\e[H\e[J" +#define VT100_SBOLD "\e[7m" +#define VT100_EBOLD "\e[m" +#define VT100_CURSOR_ADDR "\e[%d;%dH" + +static void serial_putcmd(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_set_cursor(int y, int x) +{ + char buffer[32]; + snprintf(buffer, sizeof(buffer), VT100_CURSOR_ADDR, y, x); + serial_putcmd(buffer); +} |