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[cmdline] Added configurable shell banner timeout

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This change allows the time for which shell banners are displayed to
be configured in the config.h file.  The ability to access the shell
can also be effectively disabled by setting this timeout to zero.
This commit is contained in:
Andrew Schran 2008-07-24 19:59:12 +01:00 committed by Michael Brown
parent 6b58992318
commit 833447392d
2 changed files with 8 additions and 5 deletions
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2
src/config.h
View File

@ -58,6 +58,8 @@
*/
#define TIMER_BIOS /* 18Hz BIOS timer */
#define TIMER_RDTSC /* CPU TimeStamp Counter timer */
#define BANNER_TIMEOUT 20 /* Tenths of a second for which the shell
banner should appear */
/* @END general.h */

11
src/hci/shell_banner.c
View File

@ -18,7 +18,8 @@
#include <stdio.h>
#include <console.h>
#include <gpxe/timer.h>
#include <unistd.h>
#include <config/general.h>
#include <gpxe/shell_banner.h>
/** @file
@ -27,28 +28,28 @@
*
*/
#define BANNER_TIMEOUT ( 2 * TICKS_PER_SEC )
/**
* Print shell banner and prompt for shell entry
*
* @ret enter_shell User wants to enter shell
*/
int shell_banner ( void ) {
unsigned long timeout = ( currticks() + BANNER_TIMEOUT );
int wait_count = 0;
int enter_shell = 0;
int key;
printf ( "\nPress Ctrl-B for the gPXE command line..." );
/* Wait for key */
while ( currticks() < timeout ) {
while ( wait_count < BANNER_TIMEOUT ) {
if ( iskey() ) {
key = getchar();
if ( key == 0x02 /* Ctrl-B */ )
enter_shell = 1;
break;
}
mdelay(100);
wait_count++;
}
/* Clear the "Press Ctrl-B" line */