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-rw-r--r--src/mainboard/google/hatch/variants/hatch/Makefile.inc4
-rw-r--r--src/mainboard/google/hatch/variants/hatch/gpio.c2
-rw-r--r--src/mainboard/google/hatch/variants/hatch/ramstage.c25
-rw-r--r--src/mainboard/google/hatch/variants/mushu/Makefile.inc4
-rw-r--r--src/mainboard/google/hatch/variants/mushu/gpio.c2
-rw-r--r--src/mainboard/google/hatch/variants/mushu/ramstage.c25
6 files changed, 56 insertions, 6 deletions
diff --git a/src/mainboard/google/hatch/variants/hatch/Makefile.inc b/src/mainboard/google/hatch/variants/hatch/Makefile.inc
index a990b5ad05..4bf640a7f4 100644
--- a/src/mainboard/google/hatch/variants/hatch/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/hatch/Makefile.inc
@@ -19,5 +19,7 @@ SPD_SOURCES += 8G_2666 # 0b011
SPD_SOURCES += 16G_2400 # 0b100
SPD_SOURCES += 16G_2666 # 0b101
-ramstage-y += gpio.c
bootblock-y += gpio.c
+
+ramstage-y += gpio.c
+ramstage-y += ramstage.c
diff --git a/src/mainboard/google/hatch/variants/hatch/gpio.c b/src/mainboard/google/hatch/variants/hatch/gpio.c
index 862b28fe4a..2c4fa50cd6 100644
--- a/src/mainboard/google/hatch/variants/hatch/gpio.c
+++ b/src/mainboard/google/hatch/variants/hatch/gpio.c
@@ -55,8 +55,6 @@ const struct pad_config *override_gpio_table(size_t *num)
* needed in this table.
*/
static const struct pad_config early_gpio_table[] = {
- /* A12 : FPMCU_RST_ODL */
- PAD_CFG_GPO(GPP_A12, 0, DEEP),
/* B15 : H1_SLAVE_SPI_CS_L */
PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1),
/* B16 : H1_SLAVE_SPI_CLK */
diff --git a/src/mainboard/google/hatch/variants/hatch/ramstage.c b/src/mainboard/google/hatch/variants/hatch/ramstage.c
new file mode 100644
index 0000000000..5459f55cd1
--- /dev/null
+++ b/src/mainboard/google/hatch/variants/hatch/ramstage.c
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2020 The coreboot project Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <delay.h>
+#include <gpio.h>
+#include <baseboard/variants.h>
+#include <soc/gpio.h>
+
+void variant_ramstage_init(void)
+{
+ /*
+ * Enable power to FPMCU, wait for power rail to stabilize,
+ * and then deassert FPMCU reset.
+ * Waiting for the power rail to stabilize can take a while,
+ * a minimum of 400us on Kohaku.
+ */
+ gpio_output(GPP_C11, 1);
+ mdelay(1);
+ gpio_output(GPP_A12, 1);
+}
diff --git a/src/mainboard/google/hatch/variants/mushu/Makefile.inc b/src/mainboard/google/hatch/variants/mushu/Makefile.inc
index a990b5ad05..4bf640a7f4 100644
--- a/src/mainboard/google/hatch/variants/mushu/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/mushu/Makefile.inc
@@ -19,5 +19,7 @@ SPD_SOURCES += 8G_2666 # 0b011
SPD_SOURCES += 16G_2400 # 0b100
SPD_SOURCES += 16G_2666 # 0b101
-ramstage-y += gpio.c
bootblock-y += gpio.c
+
+ramstage-y += gpio.c
+ramstage-y += ramstage.c
diff --git a/src/mainboard/google/hatch/variants/mushu/gpio.c b/src/mainboard/google/hatch/variants/mushu/gpio.c
index a60662a264..fd12eb0e52 100644
--- a/src/mainboard/google/hatch/variants/mushu/gpio.c
+++ b/src/mainboard/google/hatch/variants/mushu/gpio.c
@@ -59,8 +59,6 @@ const struct pad_config *override_gpio_table(size_t *num)
* needed in this table.
*/
static const struct pad_config early_gpio_table[] = {
- /* A12 : FPMCU_RST_ODL */
- PAD_CFG_GPO(GPP_A12, 0, DEEP),
/* B15 : H1_SLAVE_SPI_CS_L */
PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1),
/* B16 : H1_SLAVE_SPI_CLK */
diff --git a/src/mainboard/google/hatch/variants/mushu/ramstage.c b/src/mainboard/google/hatch/variants/mushu/ramstage.c
new file mode 100644
index 0000000000..5459f55cd1
--- /dev/null
+++ b/src/mainboard/google/hatch/variants/mushu/ramstage.c
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2020 The coreboot project Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <delay.h>
+#include <gpio.h>
+#include <baseboard/variants.h>
+#include <soc/gpio.h>
+
+void variant_ramstage_init(void)
+{
+ /*
+ * Enable power to FPMCU, wait for power rail to stabilize,
+ * and then deassert FPMCU reset.
+ * Waiting for the power rail to stabilize can take a while,
+ * a minimum of 400us on Kohaku.
+ */
+ gpio_output(GPP_C11, 1);
+ mdelay(1);
+ gpio_output(GPP_A12, 1);
+}