From b87effe1dde3cc3f81a6afef073009ba808e11a7 Mon Sep 17 00:00:00 2001 From: Matt Papageorge Date: Thu, 30 Jul 2020 15:22:46 -0500 Subject: soc/amd/picasso/romstage: Set SATA enable UPD if controller is enabled FSP has recently added support for a UPD switch to power gate SATA. This change adds the coreboot side of the feature. To avoid having two SATA enable options, the value of the sata_enable UPD is determined by the enable state of the AHCI controller in the platform devicetree. BUG=b:162302027 BRANCH=zork TEST=Verify AHCI controller can be hidden/disabled. Change-Id: I48bf94a7e6249db6079a6e3de7456a536d54a242 Signed-off-by: Matt Papageorge Signed-off-by: Felix Held Reviewed-on: https://review.coreboot.org/c/coreboot/+/44067 Reviewed-by: Furquan Shaikh Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/soc/amd/picasso/romstage.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/src/soc/amd/picasso/romstage.c b/src/soc/amd/picasso/romstage.c index 0accc49cfa..b96743101c 100644 --- a/src/soc/amd/picasso/romstage.c +++ b/src/soc/amd/picasso/romstage.c @@ -64,6 +64,29 @@ static bool devtree_hda_dev_enabled(void) } +static const struct device_path sata_path[] = { + { + .type = DEVICE_PATH_PCI, + .pci.devfn = PCIE_GPP_B_DEVFN + }, + { + .type = DEVICE_PATH_PCI, + .pci.devfn = SATA_DEVFN + }, +}; + +static bool devtree_sata_dev_enabled(void) +{ + const struct device *ahci_dev; + + ahci_dev = find_dev_nested_path(pci_root_bus(), sata_path, ARRAY_SIZE(sata_path)); + + if (!ahci_dev) + return false; + + return ahci_dev->enabled; +} + void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) { FSP_M_CONFIG *mcfg = &mupd->FspmConfig; @@ -115,6 +138,7 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) mcfg->telemetry_vddcr_soc_slope = config->telemetry_vddcr_soc_slope; mcfg->telemetry_vddcr_soc_offset = config->telemetry_vddcr_soc_offset; mcfg->hd_audio_enable = devtree_hda_dev_enabled(); + mcfg->sata_enable = devtree_sata_dev_enabled(); } asmlinkage void car_stage_entry(void) -- cgit v1.2.3