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mb/google/nissa/var/yaviks: 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:251055188
TEST=Boot to OS on yaviks eMMC and UFS SKUs with both unprovisioned
fw_config and fw_config set correctly.
On UFS SKU with fw_config set, eMMC no longer shows up in lspci.
(On eMMC SKU, UFS and ISH were already disabled by the coreboot PCI scan
so there's no change in behaviour.)

Change-Id: I31402cb49cffefd98b6fed971f249528448b1d0d
Signed-off-by: Reka Norman <rekanorman@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
This commit is contained in:
Reka Norman 2022-12-02 16:53:45 +11:00 committed by Eric Lai
parent 2475e022e2
commit 72fb5a915a
3 changed files with 67 additions and 0 deletions
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1
src/mainboard/google/brya/variants/yaviks/Makefile.inc
View File

@ -3,5 +3,6 @@ bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
ramstage-$(CONFIG_FW_CONFIG) += variant.c
ramstage-y += gpio.c

42
src/mainboard/google/brya/variants/yaviks/fw_config.c Normal file
View File

@ -0,0 +1,42 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/gpio.h>
#include <baseboard/variants.h>
#include <console/console.h>
#include <fw_config.h>
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),
};
void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
{
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));
}
}

24
src/mainboard/google/brya/variants/yaviks/variant.c
View File

@ -2,6 +2,7 @@
#include <baseboard/variants.h>
#include <boardid.h>
#include <device/device.h>
#include <fw_config.h>
#include <sar.h>
@ -37,3 +38,26 @@ void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
printk(BIOS_INFO, "Configured External FIVR\n");
}
}
void variant_devtree_update(void)
{
struct device *emmc = DEV_PTR(emmc);
struct device *ufs = DEV_PTR(ufs);
struct device *ish = DEV_PTR(ish);
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_UFS))) {
printk(BIOS_INFO, "UFS disabled by fw_config\n");
ufs->enabled = 0;
ish->enabled = 0;
}
}