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ctty command without parameters to disable serial console.

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This commit is contained in:
Philip Homburg 2007-01-08 14:30:11 +00:00
parent 9092146be7
commit 7d46116e47
2 changed files with 7 additions and 0 deletions
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4
boot/boot.c
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@ -1369,6 +1369,9 @@ void boot_device(char *devname)
void ctty(char *line) void ctty(char *line)
{ {
if (line == nil) {
serial_init(-1);
} else
if (between('0', line[0], '3') && line[1] == 0) { if (between('0', line[0], '3') && line[1] == 0) {
serial_init(line[0] - '0'); serial_init(line[0] - '0');
} else { } else {
@ -1793,6 +1796,7 @@ void execute(void)
case R_HELP: help(); ok= 1; break; case R_HELP: help(); ok= 1; break;
case R_EXIT: exit(0); case R_EXIT: exit(0);
case R_OFF: off(); ok= 1; break; case R_OFF: off(); ok= 1; break;
case R_CTTY: ctty(nil); ok= 1; break;
} }
/* Command to check bootparams: */ /* Command to check bootparams: */

3
boot/boothead.s
View File

@ -854,6 +854,9 @@ restore_video: ! To restore the video mode on exit
_serial_init: _serial_init:
mov bx, sp mov bx, sp
mov dx, 2(bx) ! Line number mov dx, 2(bx) ! Line number
mov line, #0
test dx, dx ! Off if line number < 0
js 0f
push ds push ds
xor ax, ax xor ax, ax
mov ds, ax ! Vector and BIOS data segment mov ds, ax ! Vector and BIOS data segment