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G5/970 updates:

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Setup cache bits in HID5 early on so that dcbz/icbi use the
128 byte cache line size.  The mismatch was causing dynamically linked
apps to randomly coredump.

With this fix, the G5 can boot into full multi-user by using a NFS
mounted root file system.
This commit is contained in:
sanjayl 2006-08-15 03:29:55 +00:00
parent 282f07d643
commit 5576a1bb85
1 changed files with 24 additions and 1 deletions
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25
sys/arch/macppc/macppc/locore.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore.S,v 1.55 2006/08/05 21:26:48 sanjayl Exp $ */
/* $NetBSD: locore.S,v 1.56 2006/08/15 03:29:55 sanjayl Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -103,6 +103,29 @@ __start:
1:
#endif
#if defined (PMAC_G5)
/* and clear HID5 DCBZ bits (56/57), need to do this early */
mfspr 11,SPR_HID5
rldimi 11,0,6,56
sync
mtspr SPR_HID5,11
isync
sync
/* Setup HID1 features, prefetch + i-cacheability controlled by PTE */
mfspr 0,SPR_HID1
li 11,0x1200
sldi 11,11,44
or 0,0,11
mtspr SPR_HID1,0
isync
sync
/* Restore r0 */
li 0,0
#endif /* PMAC_G5 */
/*
* Initialize cpu_info[0]
*/