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authorWonkyu Kim <wonkyu.kim@intel.com>2020-03-03 01:43:45 -0800
committerPatrick Georgi <pgeorgi@google.com>2020-03-10 09:57:41 +0000
commit2b4ded0be8c1c01aba566bb4bbccf5169ce133f7 (patch)
tree6bfda11d467b172f1de023f19194bace8a773a3f /AUTHORS
parent01ec713c269f68e5a2918cfb8ee14d6d1f40eda8 (diff)
soc/intel/tigerlake: Enable Hybrid storage mode
To use Optane memory, we need to set 2x2 PCIe lane mode while we need to set 1x4 PCIe lane mode for NVMe. The mode can be selected using the FIT tool at build time. By enabling hybrid storage mode in FSP, FSP will set 2x2 PCIe lane mode if Optane memory is detected and the mode is not 2x2 and set 1x4 PCIe lane mode if Optane memory is not detected and the mode is not 1x4 during boot up. The mode is saved in SPI NOR for next boot. BUG=b:148604250 BRANCH=none TEST=Build and test booting TGLRVP from NVMe and Optane Check PCIe lane configuration. Show all the NVMe devices lspci -d ::0108 Show all the NVMe devices and be really verbose lspci -vvvd ::0108 Print PCIe lane capabilities and configurations for all the NVMe devices. lspci -vvvd ::0108 | grep -e x[124] Print all the PCIe information of the device ae:00.0 lspci -vvvs ae: Signed-off-by: Wonkyu Kim <wonkyu.kim@intel.com> Change-Id: I25bc380697b0774cc30ad1b31ad785ee18822619 Reviewed-on: https://review.coreboot.org/c/coreboot/+/39232 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Nick Vaccaro <nvaccaro@google.com> Reviewed-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com> Reviewed-by: Caveh Jalali <caveh@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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