The branch main has been updated by luporl:
URL:
https://cgit.FreeBSD.org/src/commit/?id=a23e18ea545675aca7551ef2395f6df40a3acb29
commit a23e18ea545675aca7551ef2395f6df40a3acb29
Author: Leandro Lupori <lup...@freebsd.org>
AuthorDate: 2021-10-22 16:44:21 +0000
Commit: Leandro Lupori <lup...@freebsd.org>
CommitDate: 2021-10-22 16:44:21 +0000
powerpc64: tell kernel when radix is not available
If CAS detects that radix is not supported, set radix_mmu to 0
to avoid the kernel trying to use it and panic.
MFC after: 2 weeks
Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br)
---
stand/powerpc/ofw/cas.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/stand/powerpc/ofw/cas.c b/stand/powerpc/ofw/cas.c
index 0a12f31d1a1a..e95af42762a5 100644
--- a/stand/powerpc/ofw/cas.c
+++ b/stand/powerpc/ofw/cas.c
@@ -234,9 +234,15 @@ ppc64_cas(void)
}
}
- if ((var = getenv("radix_mmu")) != NULL && var[0] == '0')
+ if (!radix_mmu)
+ /*
+ * If radix is not supported, set radix_mmu to 0 to avoid
+ * the kernel trying to use it and panic.
+ */
+ setenv("radix_mmu", "0", 1);
+ else if ((var = getenv("radix_mmu")) != NULL && var[0] == '0')
radix_mmu = 0;
- if (radix_mmu)
+ else
ov5[OV5_MMU_INDEX] = OV5_MMU_RADIX;
inst = OF_open("/");
