diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/pcm043/lowlevel_init.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/board/pcm043/lowlevel_init.S b/board/pcm043/lowlevel_init.S index b176432dc0..6f64ecfbb0 100644 --- a/board/pcm043/lowlevel_init.S +++ b/board/pcm043/lowlevel_init.S @@ -63,6 +63,7 @@ board_init_lowlevel: mrc 15, 0, r0, c1, c0, 1 orr r0, r0, #7 +// orr r0, r0, #(1 << 31) /* disable hit under miss (Errata 364296) */ mcr 15, 0, r0, c1, c0, 1 orr r1, r1, #(1<<11) /* Flow prediction (Z) */ @@ -74,6 +75,14 @@ board_init_lowlevel: mov r0, #0 mcr 15, 0, r0, c15, c2, 4 + /* + * Branch predicition is now enabled. Flush the BTAC to ensure a valid + * starting point. Don't flush BTAC while it is disabled to avoid + * ARM1136 erratum 408023. + */ + mov r0, #0 + mcr p15, 0, r0, c7, c5, 6 /* flush entire BTAC */ + mov r0, #0 mcr 15, 0, r0, c7, c7, 0 /* invalidate I cache and D cache */ mcr 15, 0, r0, c8, c7, 0 /* invalidate TLBs */ |