diff options
author | Oskar Enoksson <enok@lysator.liu.se> | 2011-10-06 18:21:19 +0200 |
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committer | Marc Jones <marcj303@gmail.com> | 2011-10-11 08:49:59 +0200 |
commit | 07bf9119310ceece5a6c76907004bc96af1a38cc (patch) | |
tree | ce78f95e2a2cbecc508868c325fbadd56f57e353 /util/options | |
parent | 75df1062a1438c40bc94021982fd389848f1d7fc (diff) |
Fixed broken MTRR for >4GB memory on AMD K8 fam 0fh rev <=E
AMD K8 rev F and later implements a bit SYSCFG_MSR_TOM2WB to
mark dram memory above 4GB as WB. However, AMD K8
rev E and earlier don't implement this bit and therefore need
MTRR spanning dram memory above 4GB. The current implementation
of amd_setup_mtrrs never generate MTRR above 4GB.
This caused memory > 4GB not to be recognized in e.g. Linux on those
rev E or older platforms. This commit should fix that bug.
Signed-off-by: Oskar Enoksson <enok@lysator.liu.se>
Change-Id: Ie568a52a8eb355969c86964d5afc4692e60f69c1
Reviewed-on: http://review.coreboot.org/238
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Diffstat (limited to 'util/options')
0 files changed, 0 insertions, 0 deletions