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libpayload: Support curses for serial

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Support the curses interface over serial by supporting a minimal vt100
terminal.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3370 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jordan Crouse
2008-06-20 00:01:42 +00:00
parent 4e48408059
commit 3b4706591c
4 changed files with 178 additions and 6 deletions
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57
payloads/libpayload/drivers/serial.c
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@@ -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);
}