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path: root/src/soc/intel/apollolake/meminit.c
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2016-07-22soc/intel/apollolake: clarify meaning of LPDDR4 density meaningAaron Durbin
The 'dram density' is a misnomer because the memory initialization code treats that input parameter as a per rank density. Therefore, update the variables to further clarify how it's actually being used. BUG=chrome-os-partner:55446 Change-Id: Ie4c944f35b531812205ac0bb1c70f39ac401495e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/15773 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2016-07-22soc/intel/apollolake: add dual rank option to meminitAaron Durbin
Despite the UPD comments the Chx_RankEnable fields are a bit mask which indicates which ranks are enabled for physical channel. Add the ability to set the rank mask correctly for dual rank LPDDR4 modules. BUG=chrome-os-partner:55446 Change-Id: I9dbed7bb6a4b512e57f6b4481180932a7cce91ff Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/15771 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Andrey Petrov <andrey.petrov@intel.com> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2016-07-07soc/intel/apollolake: add LPDDR4 sku selection supportAaron Durbin
Instead of having all the mainboards put similar logic into their own code provide common mechanism for memory SKU selection. A function, meminit_lpddr4_by_sku(), is added that selects the proper configuration based on the SKU id and configuration passed in. LPDDR4 speed as well as DRAM device density configuration is associated for each logical channel per SKU id. BUG=chrome-os-partner:54949 BRANCH=None TEST=Built and used on reef for memory config. Change-Id: Ifc6a734040bb61a58bc3d4c128a6420a71245c6c Signed-off-by: Aaron Durbin <adurbin@chromuim.org> Reviewed-on: https://review.coreboot.org/15559 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Furquan Shaikh <furquan@google.com>
2016-05-13soc/intel/apollolake: provide common LPDDR4 memory initAaron Durbin
Instead of having the mainboards duplicate logic surrounding LPDDR4 initialization provide helpers to do the heavy lifting. It also handles the quirks of the FSP configuration which allows the mainboard porting to focus on the schematic/design. Change-Id: I686eb3097c33399a3b94af89237f7fe1b2d34c2f Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/14790 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>