summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorTom Warren <twarren@nvidia.com>2015-08-04 13:08:50 -0700
committerPatrick Georgi <pgeorgi@google.com>2015-08-28 06:40:43 +0000
commit50967870a9b0a55a5c973785803d7fe8921c1107 (patch)
tree18c9e0a8ebc961bafeffa20bfe64567d9b83e76d /Documentation
parent8b3851969d6546ae920f52eb681631cd9b9aff46 (diff)
downloadcoreboot-50967870a9b0a55a5c973785803d7fe8921c1107.tar.xz
T210: Add 128MB VPR allocation/carveout
The NV security team requested that coreboot allocate a 128MB region in SDRAM for VPR (Video Protection Region). We had previously just disabled the VPR by setting BOM/SIZE to 0. Once allocated, the VPR will be locked from further access. The ALLOW_TZ_WRITE_ACCESS bit is _not_ set, as dynamic VPR config is not supported at this time (i.e. trusted code can _not_ remap or resize the VPR). BUG=None BRANCH=None TEST=Built and booted on my P5 A44. Saw the VPR region in the boot spew (ID:3 [f6800000 - fe800000]). Dumped the MC VideoProtect registers and verified their values. Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Original-Commit-Id: a7481dba31dc39f482f8a7bfdaba1d1f4fc3cb81 Original-Change-Id: Ia19af485430bc09dbba28fcef5de16de851f81aa Original-Signed-off-by: Tom Warren <twarren@nvidia.com> Original-Reviewed-on: https://chromium-review.googlesource.com/290475 Original-Reviewed-by: Hyung Taek Ryoo <hryoo@nvidia.com> Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Hridya Valsaraju <hvalsaraju@nvidia.com> Original-(cherry picked from commit 9629b318eb17b145315531509f950da02483114f) Original-Reviewed-on: https://chromium-review.googlesource.com/291095 Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Change-Id: I19a93c915990644177c491c8212f2cf356d4d17d Reviewed-on: http://review.coreboot.org/11384 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions