| commit | 191c008a2155f99fc6476539878640b4032a457b | [log] [tgz] |
|---|---|---|
| author | Simon Glass <sjg@chromium.org> | Mon Jan 19 22:16:14 2015 -0700 |
| committer | Simon Glass <sjg@chromium.org> | Sat Jan 24 06:13:45 2015 -0700 |
| tree | 36823854ae5d3de1b03646f7d8230df51a62743e | |
| parent | a9aff2f46a7f7d29a662531dbc181773f16a606d [diff] |
x86: Implement a cache for Memory Reference Code parameters The memory reference code takes a very long time to 'train' its SDRAM interface, around half a second. To avoid this delay on every boot we can store the parameters from the last training sessions to speed up the next. Add an implementation of this, storing the training data in CMOS RAM and SPI flash. Signed-off-by: Simon Glass <sjg@chromium.org>