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-rw-r--r--src/mainboard/google/volteer/mainboard.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/mainboard.c b/src/mainboard/google/volteer/mainboard.c
index 0850e745db..ea9e08f294 100644
--- a/src/mainboard/google/volteer/mainboard.c
+++ b/src/mainboard/google/volteer/mainboard.c
@@ -7,6 +7,8 @@
#include <drivers/spi/tpm/tpm.h>
#include <ec/ec.h>
#include <fw_config.h>
+#include <gpio.h>
+#include <intelblocks/gpio.h>
#include <security/tpm/tss.h>
#include <soc/gpio.h>
#include <soc/pci_devs.h>
@@ -136,6 +138,25 @@ static void mainboard_chip_init(void *chip_info)
override_pads = variant_override_gpio_table(&override_num);
gpio_configure_pads_with_override(base_pads, base_num, override_pads, override_num);
+
+ /*
+ * Check SATAXPCIE1 (GPP_A12) RX status to determine if SSD is NVMe or SATA and set
+ * the IOSSTATE RX field to drive 0 or 1 back to the internal controller to ensure
+ * the attached device is not mis-detected on resume from S0ix.
+ */
+ if (gpio_get(GPP_A12)) {
+ const struct pad_config gpio_pedet_nvme[] = {
+ PAD_CFG_NF_IOSSTATE(GPP_A12, NONE, DEEP, NF1, HIZCRx1),
+ };
+ gpio_configure_pads(gpio_pedet_nvme, ARRAY_SIZE(gpio_pedet_nvme));
+ printk(BIOS_INFO, "SATAXPCIE1 indicates PCIe NVMe is present\n");
+ } else {
+ const struct pad_config gpio_pedet_sata[] = {
+ PAD_CFG_NF_IOSSTATE(GPP_A12, NONE, DEEP, NF1, HIZCRx0),
+ };
+ gpio_configure_pads(gpio_pedet_sata, ARRAY_SIZE(gpio_pedet_sata));
+ printk(BIOS_INFO, "SATAXPCIE1 indicates SATA SSD is present\n");
+ }
}
void mainboard_silicon_init_params(FSP_S_CONFIG *params)