variant.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <baseboard/variants.h>
#include <chip.h>
#include <soc/pci_devs.h>
#include <ec/google/chromeec/ec.h>
 
void variant_devtree_update(void)
{
        uint32_t sku_id;
        struct device *emmc_host;
        struct device *ssd_host;
        config_t *cfg = config_of_soc();
        emmc_host = pcidev_path_on_root(PCH_DEVFN_EMMC);
        ssd_host = pcidev_path_on_root(PCH_DEVFN_SATA);
 
        /* SKU ID 2 and 4 do not have eMMC, hence disable it. */
        sku_id = google_chromeec_get_board_sku();
        if ((sku_id == 2) || (sku_id == 4)) {
                if (emmc_host == NULL)
                        return;
                emmc_host->enabled = 0;
                cfg->ScsEmmcHs400Enabled = 0;
        }
 
        /* SKU ID 1 and 3 do not have SSD, hence disable it. */
        if ((sku_id == 1) || (sku_id == 3)) {
                if (ssd_host == NULL)
                        return;
                ssd_host->enabled = 0;
                cfg->SataSalpSupport = 0;
                cfg->SataPortsEnable[1] = 0;
                cfg->SataPortsDevSlp[1] = 0;
                cfg->satapwroptimize = 0;
        }
}