Same problem as sfuart(4); no support for detecting a BREAK. So
leverage db_rint(9) to provide a way to enter DDB.
ok?
Index: dev/fdt/amluart.c
===================================================================
RCS file: /cvs/src/sys/dev/fdt/amluart.c,v
retrieving revision 1.3
diff -u -p -r1.3 amluart.c
--- dev/fdt/amluart.c 24 Oct 2021 17:52:26 -0000 1.3
+++ dev/fdt/amluart.c 15 Jul 2022 09:20:10 -0000
@@ -276,8 +276,20 @@ amluart_softintr(void *arg)
splx(s);
- while (ibufp < ibufend)
- (*linesw[tp->t_line].l_rint)(*ibufp++, tp);
+ while (ibufp < ibufend) {
+ int i = *ibufp++;
+#ifdef DDB
+ if (tp->t_dev == cn_tab->cn_dev) {
+ int j = db_rint(i);
+
+ if (j == 1) /* Escape received, skip */
+ continue;
+ if (j == 2) /* Second char wasn't 'D' */
+ (*linesw[tp->t_line].l_rint)(27, tp);
+ }
+#endif
+ (*linesw[tp->t_line].l_rint)(i, tp);
+ }
}
int
