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The SEC uses the same page latch for both ROM and RAM, so we should arrange

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to reset it to 0 on shutdown so that RISC OS gets to see the start of the
ROM.
This commit is contained in:
bjh21 2006-10-14 21:47:11 +00:00
parent 48314d6d96
commit bafb9c4f84
1 changed files with 18 additions and 2 deletions
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20
sys/dev/podulebus/sec.c
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@ -1,4 +1,4 @@
/* $NetBSD: sec.c,v 1.3 2006/10/02 22:10:55 bjh21 Exp $ */
/* $NetBSD: sec.c,v 1.4 2006/10/14 21:47:11 bjh21 Exp $ */
/*-
* Copyright (c) 2000, 2001, 2006 Ben Harris
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sec.c,v 1.3 2006/10/02 22:10:55 bjh21 Exp $");
__KERNEL_RCSID(0, "$NetBSD: sec.c,v 1.4 2006/10/14 21:47:11 bjh21 Exp $");
#include <sys/param.h>
@ -94,6 +94,9 @@ struct sec_softc {
static int sec_match(struct device *, struct cfdata *, void *);
static void sec_attach(struct device *, struct device *, void *);
/* shutdown hook */
static void sec_shutdown(void *);
/* callbacks from MI WD33C93 driver */
static int sec_dmasetup(struct wd33c93_softc *, caddr_t *, size_t *, int,
size_t *);
@ -208,6 +211,19 @@ sec_attach(struct device *parent, struct device *self, void *aux)
sec_cli(sc);
sc->sc_mpr |= SEC_MPR_IE;
bus_space_write_1(sc->sc_pod_t, sc->sc_pod_h, SEC_MPR, sc->sc_mpr);
shutdownhook_establish(sec_shutdown, sc);
}
/*
* Before reboot, reset the page register to 0 so that RISC OS can see
* the podule ROM.
*/
static void
sec_shutdown(void *cookie)
{
struct sec_softc *sc = cookie;
sec_setpage(sc, 0);
}
static void