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make escape code handling for serial terminal more robust

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Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Marc Jones <marc.jones@amd.com>

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3691 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi
2008-10-23 12:22:24 +00:00
parent c811a1c6ae
commit c4f294f33f
1 changed files with 15 additions and 12 deletions
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9
payloads/libpayload/curses/keyboard.c
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@@ -50,10 +50,11 @@ static int _halfdelay = 0;
do the cooking in here, but we should probably eventually
pass it to dedicated vt100 code */
static int getkeyseq(char *buffer, int len)
static int getkeyseq(char *buffer, int len, int max)
{
int i;
while (1) {
for(i = 0; i < 75; i++) {
if (serial_havechar())
break;
@@ -64,7 +65,9 @@ static int getkeyseq(char *buffer, int len)
return len;
buffer[len++] = serial_getchar();
return getkeyseq(buffer, len);
if (len == max)
return len;
}
}
static struct {
@@ -99,7 +102,7 @@ static struct {
static int handle_escape(void)
{
char buffer[5];
int len = getkeyseq(buffer, 0);
int len = getkeyseq(buffer, 0, sizeof(buffer));
int i, t;
if (len == 0)