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| author | ian <ian@FreeBSD.org> | 2013-12-13 17:02:09 +0000 |
|---|---|---|
| committer | ian <ian@FreeBSD.org> | 2013-12-13 17:02:09 +0000 |
| commit | de1f089de574ddd52ec8d1117ea25962f38e2da9 (patch) | |
| tree | 8e01969ee0182aaee4dd1a80b867b9bd419ec3c4 /sys/arm | |
| parent | be8c9bf1f0808be3f768dfe7dd6876e09347e38a (diff) | |
| download | FreeBSD-src-de1f089de574ddd52ec8d1117ea25962f38e2da9.zip FreeBSD-src-de1f089de574ddd52ec8d1117ea25962f38e2da9.tar.gz | |
MFC r256647:
Invalidate the entire L2 cache before enabling it. Say whether it
has been enabled or disabled.
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/arm/pl310.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/arm/arm/pl310.c b/sys/arm/arm/pl310.c index 758b5e5..11ea5c7 100644 --- a/sys/arm/arm/pl310.c +++ b/sys/arm/arm/pl310.c @@ -341,8 +341,13 @@ pl310_attach(device_t dev) ctrl_value = pl310_read4(sc, PL310_CTRL); if (sc->sc_enabled && !(ctrl_value & CTRL_ENABLED)) { + /* invalidate current content */ + pl310_write4(pl310_softc, PL310_INV_WAY, 0xffff); + pl310_wait_background_op(PL310_INV_WAY, 0xffff); + /* Enable the L2 cache if disabled */ platform_pl310_write_ctrl(sc, CTRL_ENABLED); + device_printf(dev, "L2 Cache enabled\n"); } if (!sc->sc_enabled && (ctrl_value & CTRL_ENABLED)) { @@ -375,6 +380,7 @@ pl310_attach(device_t dev) EVENT_COUNTER_CTRL_C0_RESET | EVENT_COUNTER_CTRL_C1_RESET); + device_printf(dev, "L2 Cache disabled\n"); } if (sc->sc_enabled) |
