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Get some entropy early on bcm2835_rng attach.

This commit is contained in:
riastradh 2013-08-28 18:32:45 +00:00
parent 719254e9b5
commit 361f5037ee
1 changed files with 5 additions and 2 deletions
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7
sys/arch/arm/broadcom/bcm2835_rng.c
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@ -1,4 +1,4 @@
/* $NetBSD: bcm2835_rng.c,v 1.7 2013/08/25 17:08:41 tls Exp $ */ /* $NetBSD: bcm2835_rng.c,v 1.8 2013/08/28 18:32:45 riastradh Exp $ */
/*- /*-
* Copyright (c) 2013 The NetBSD Foundation, Inc. * Copyright (c) 2013 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bcm2835_rng.c,v 1.7 2013/08/25 17:08:41 tls Exp $"); __KERNEL_RCSID(0, "$NetBSD: bcm2835_rng.c,v 1.8 2013/08/28 18:32:45 riastradh Exp $");
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
@ -117,6 +117,9 @@ bcmrng_attach(device_t parent, device_t self, void *aux)
ctrl = bus_space_read_4(sc->sc_iot, sc->sc_ioh, RNG_CTRL); ctrl = bus_space_read_4(sc->sc_iot, sc->sc_ioh, RNG_CTRL);
ctrl |= RNG_CTRL_EN; ctrl |= RNG_CTRL_EN;
bus_space_write_4(sc->sc_iot, sc->sc_ioh, RNG_CTRL, ctrl); bus_space_write_4(sc->sc_iot, sc->sc_ioh, RNG_CTRL, ctrl);
/* get some initial entropy ASAP */
bcmrng_get(RND_POOLBITS / NBBY, sc);
} }
static void static void