distro/pxeboot: Handle prompt variable

Regarding the documentation found here:
https://github.com/u-boot/u-boot/blob/master/common/menu.c#L347

If both timeout and prompt is set to 0 the default entry shall
be booted immediately. However the current behaviour is that
the prompt is shown (tested with distroboot) until the user
selects an entry (no timeout).

This change implements a behaviour as documented. It was tested
with distroboot.

Signed-off-by: Manuel Traut <manuel.traut@mt.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/boot/pxe_utils.c b/boot/pxe_utils.c
index c613818d0b34982df40c3adaef9ec593d706be29..272431381763f7bc19ed71e7e8f5d94486ba78ed 100644 (file)
--- a/boot/pxe_utils.c
+++ b/boot/pxe_utils.c
@@ -1368,7 +1368,10 @@ static int parse_pxefile_top(struct pxe_context *ctx, char *p, unsigned long bas
                        break;
 
                case T_PROMPT:
-                       eol_or_eof(&p);
+                       err = parse_integer(&p, &cfg->prompt);
+                       // Do not fail if prompt configuration is undefined
+                       if (err <  0)
+                               eol_or_eof(&p);
                        break;
 
                case T_EOL: