diff options
| author |   kettenis <kettenis@openbsd.org> | 2020-07-10 14:35:01 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2020-07-10 14:35:01 +0000 |
| commit | f0f36bcaeb9f3cb1c208273553377615c1c5928b (patch) | |
| tree | 51e98465f6b5fdedfe30cc582de25192451208b9 | |
| parent | Change users of IFQ_SET_MAXLEN() and IFQ_IS_EMPTY() to use the "new" API. (diff) | |
| download | wireguard-openbsd-f0f36bcaeb9f3cb1c208273553377615c1c5928b.tar.xz wireguard-openbsd-f0f36bcaeb9f3cb1c208273553377615c1c5928b.zip | |
Use OPAL_REINIT_CPUS calls during early boot to set endianness and to
set the MMU to hash mode such that the full TLB is available on POWER9
CPUs.
| -rw-r--r-- | sys/arch/powerpc64/powerpc64/machdep.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/arch/powerpc64/powerpc64/machdep.c b/sys/arch/powerpc64/powerpc64/machdep.c index a8d5406f46d..0ccbd0eb3ff 100644 --- a/sys/arch/powerpc64/powerpc64/machdep.c +++ b/sys/arch/powerpc64/powerpc64/machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: machdep.c,v 1.46 2020/07/08 17:48:28 kettenis Exp $ */ +/* $OpenBSD: machdep.c,v 1.47 2020/07/10 14:35:01 kettenis Exp $ */ /* * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org> @@ -125,6 +125,16 @@ init_powernv(void *fdt, void *tocbase) fdt_node_property(node, "opal-entry-address", &prop); opal_entry = bemtoh64((uint64_t *)prop); fdt_node_property(node, "compatible", &prop); + + opal_reinit_cpus(OPAL_REINIT_CPUS_HILE_BE); + + /* + * The following call will fail on Power ISA 2.0x CPUs, + * but that is fine since they don't support Radix Tree + * translation. On Power ISA 3.0 CPUs this will make + * the full TLB available. + */ + opal_reinit_cpus(OPAL_REINIT_CPUS_MMU_HASH); } /* At this point we can call OPAL runtime services and use printf(9). */ |