[M] Change in coreboot[master]: mb/google/nissa/var/craask: Disable storage devices based on fw_config

[Reka Norman (Code Review)]

Reka Norman has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/71726 )

Change subject: mb/google/nissa/var/craask: Disable storage devices based on fw_config
......................................................................

mb/google/nissa/var/craask: Disable storage devices based on fw_config

Disable devices in variant.c instead of adding probe statements to
devicetree because storage devices need to be enabled when fw_config is
unprovisioned, and devicetree does not currently support this (it
disables all probed devices when fw_config is unprovisioned).

BUG=b:263920313
TEST=Boot to OS on craask eMMC and NVMe SKUs with both unprovisioned
fw_config and fw_config set correctly.

Change-Id: I4167ee4d00b9ae8fe074c6f5e7a2d5a7382bfe6d
Signed-off-by: Reka Norman 
---
M src/mainboard/google/brya/variants/craask/fw_config.c
M src/mainboard/google/brya/variants/craask/variant.c
2 files changed, 75 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/26/71726/1

diff --git a/src/mainboard/google/brya/variants/craask/fw_config.c b/src/mainboard/google/brya/variants/craask/fw_config.c
index 937e90d..47029ed 100644
--- a/src/mainboard/google/brya/variants/craask/fw_config.c
+++ b/src/mainboard/google/brya/variants/craask/fw_config.c
@@ -47,6 +47,33 @@
    PAD_NC_LOCK(GPP_F15, NONE, LOCK_CONFIG),
 };

+static const struct pad_config emmc_disable_pads[] = {
+	/* I7  : EMMC_CMD */
+	PAD_NC(GPP_I7, NONE),
+	/* I8  : EMMC_D0 */
+	PAD_NC(GPP_I8, NONE),
+	/* I9  : EMMC_D1 */
+	PAD_NC(GPP_I9, NONE),
+	/* I10 : EMMC_D2 */
+	PAD_NC(GPP_I10, NONE),
+	/* I11 : EMMC_D3 */
+	PAD_NC(GPP_I11, NONE),
+	/* I12 : EMMC_D4 */
+	PAD_NC(GPP_I12, NONE),
+	/* I13 : EMMC_D5 */
+	PAD_NC(GPP_I13, NONE),
+	/* I14 : EMMC_D6 */
+	PAD_NC(GPP_I14, NONE),
+	/* I15 : EMMC_D7 */
+	PAD_NC(GPP_I15, NONE),
+	/* I16 : EMMC_RCLK */
+	PAD_NC(GPP_I16, NONE),
+	/* I17 : EMMC_CLK */
+	PAD_NC(GPP_I17, NONE),
+	/* I18 : EMMC_RST_L */
+	PAD_NC(GPP_I18, NONE),
+};
+
 static const struct pad_config nvme_disable_pads[] = {
    /* B4  : SSD_PERST_L */
    PAD_NC_LOCK(GPP_B4, NONE, LOCK_CONFIG),
@@ -84,6 +111,12 @@
    					ARRAY_SIZE(stylus_disable_pads));
    }

+	if (fw_config_is_provisioned() && !fw_config_probe(FW_CONFIG(STORAGE, STORAGE_EMMC))) {
+		printk(BIOS_INFO, "Disable eMMC GPIO pins.\n");
+		gpio_padbased_override(padbased_table, emmc_disable_pads,
+						ARRAY_SIZE(emmc_disable_pads));
+	}
+
    if (fw_config_is_provisioned() && !fw_config_probe(FW_CONFIG(STORAGE, STORAGE_NVME))) {
    	printk(BIOS_INFO, "Disable NVMe SSD GPIO pins.\n");
    	gpio_padbased_override(padbased_table, nvme_disable_pads,
diff --git a/src/mainboard/google/brya/variants/craask/variant.c b/src/mainboard/google/brya/variants/craask/variant.c
index 19f3d5e..24d7e00 100644
--- a/src/mainboard/google/brya/variants/craask/variant.c
+++ b/src/mainboard/google/brya/variants/craask/variant.c
@@ -1,6 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

+#include <baseboard/variants.h>
 #include <console/console.h>
+#include <device/device.h>
 #include <fw_config.h>
 #include <sar.h>

@@ -8,3 +10,24 @@
 {
    return get_wifi_sar_fw_config_filename(FW_CONFIG_FIELD(WIFI_SAR_ID));
 }
+
+void variant_devtree_update(void)
+{
+	struct device *emmc = DEV_PTR(emmc);
+	struct device *nvme_rp = DEV_PTR(pcie_rp9);
+
+	if (!fw_config_is_provisioned()) {
+		printk(BIOS_INFO, "fw_config unprovisioned so enable all storage devices\n");
+		return;
+	}
+
+	if (!fw_config_probe(FW_CONFIG(STORAGE, STORAGE_EMMC))) {
+		printk(BIOS_INFO, "eMMC disabled by fw_config\n");
+		emmc->enabled = 0;
+	}
+
+	if (!fw_config_probe(FW_CONFIG(STORAGE, STORAGE_NVME))) {
+		printk(BIOS_INFO, "NVMe disabled by fw_config\n");
+		nvme_rp->enabled = 0;
+	}
+}