diff options
| author | Patrick Wildt <patrick@cvs.openbsd.org> | 2019-01-28 10:29:36 +0000 |
|---|---|---|
| committer | Patrick Wildt <patrick@cvs.openbsd.org> | 2019-01-28 10:29:36 +0000 |
| commit | 75fa30d74fa6f7abf58e3ffd7f85cb62c4df1c03 (patch) | |
| tree | 18b07579c81859caf375a0411bfb19e656a1453e | |
| parent | 26c8d2d12930baad257bc15f0ad101e12453f39f (diff) | |
Implement breaking into ddb on imxuart(4). When a break is detected,
a flag in the upper byte of the 2-byte-wide receive register is set.
ok kettenis@
| -rw-r--r-- | sys/dev/fdt/imxuart.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sys/dev/fdt/imxuart.c b/sys/dev/fdt/imxuart.c index 84c7eb5aee6..b9dee6eb9e0 100644 --- a/sys/dev/fdt/imxuart.c +++ b/sys/dev/fdt/imxuart.c @@ -1,4 +1,4 @@ -/* $OpenBSD: imxuart.c,v 1.4 2018/08/06 10:52:30 patrick Exp $ */ +/* $OpenBSD: imxuart.c,v 1.5 2019/01/28 10:29:35 patrick Exp $ */ /* * Copyright (c) 2005 Dale Rahn <drahn@motorola.com> * @@ -182,6 +182,7 @@ imxuart_attach(struct device *parent, struct device *self, void *aux) break; cn_tab->cn_dev = makedev(maj, sc->sc_dev.dv_unit); + SET(sc->sc_hwflags, COM_HW_CONSOLE); printf(": console"); } @@ -224,7 +225,17 @@ imxuart_intr(void *arg) p = sc->sc_ibufp; while(ISSET(bus_space_read_2(iot, ioh, IMXUART_USR2), IMXUART_SR2_RDR)) { - c = bus_space_read_1(iot, ioh, IMXUART_URXD); + c = bus_space_read_2(iot, ioh, IMXUART_URXD); + if (ISSET(c, IMXUART_RX_BRK)) { +#ifdef DDB + if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE)) { + if (db_console) + db_enter(); + continue; + } +#endif + c &= ~0xff; + } if (p >= sc->sc_ibufend) { sc->sc_floods++; if (sc->sc_errors++ == 0) |