summaryrefslogtreecommitdiff
path: root/src/southbridge/intel
diff options
context:
space:
mode:
authorArthur Heymans <arthur@aheymans.xyz>2019-10-02 14:33:34 +0200
committerArthur Heymans <arthur@aheymans.xyz>2019-10-06 10:13:32 +0000
commit37e1d93ca0da15c03be32514e45f3668060aac08 (patch)
tree5d0bccf93debb19e78496d20a76e408be2871b38 /src/southbridge/intel
parentd0310faa3bc4d3b62d17d632fbaee98c146eebe0 (diff)
downloadcoreboot-37e1d93ca0da15c03be32514e45f3668060aac08.tar.xz
sb/intel/ibexpeak: Fix enabling HPET
RCBA_HPTC needs to be read back to properly work. This fixes SeaBIOS endlessly waiting for input instead of booting the default entry. Linux already fixes this itself. Change-Id: I22b8b34924f2add2185ec46470c1559bf2fb6d58 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35757 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/southbridge/intel')
-rw-r--r--src/southbridge/intel/ibexpeak/lpc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/southbridge/intel/ibexpeak/lpc.c b/src/southbridge/intel/ibexpeak/lpc.c
index ec9b045f24..e433530bae 100644
--- a/src/southbridge/intel/ibexpeak/lpc.c
+++ b/src/southbridge/intel/ibexpeak/lpc.c
@@ -394,6 +394,7 @@ static void enable_hpet(void)
reg32 |= (1 << 7); // HPET Address Enable
reg32 &= ~(3 << 0);
RCBA32(HPTC) = reg32;
+ RCBA32(HPTC); /* Read back for it to work */
write32((u32 *)0xfed00010, read32((u32 *)0xfed00010) | 1);
}