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-rw-r--r--src/mainboard/google/hatch/variants/dratini/Makefile.inc1
-rw-r--r--src/mainboard/google/hatch/variants/dratini/gpio.c29
-rw-r--r--src/mainboard/google/hatch/variants/dratini/ramstage.c32
-rw-r--r--src/mainboard/google/hatch/variants/jinlon/Makefile.inc1
-rw-r--r--src/mainboard/google/hatch/variants/jinlon/gpio.c29
-rw-r--r--src/mainboard/google/hatch/variants/jinlon/ramstage.c32
6 files changed, 124 insertions, 0 deletions
diff --git a/src/mainboard/google/hatch/variants/dratini/Makefile.inc b/src/mainboard/google/hatch/variants/dratini/Makefile.inc
index 4ed09c9a76..0d577cde51 100644
--- a/src/mainboard/google/hatch/variants/dratini/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/dratini/Makefile.inc
@@ -26,3 +26,4 @@ SPD_SOURCES += 16G_3200_4bg # 0b1001
bootblock-y += gpio.c
ramstage-y += gpio.c
ramstage-y += variant.c
+ramstage-y += ramstage.c
diff --git a/src/mainboard/google/hatch/variants/dratini/gpio.c b/src/mainboard/google/hatch/variants/dratini/gpio.c
index fd59060756..e3b3d8a23a 100644
--- a/src/mainboard/google/hatch/variants/dratini/gpio.c
+++ b/src/mainboard/google/hatch/variants/dratini/gpio.c
@@ -134,3 +134,32 @@ const struct pad_config *variant_early_gpio_table(size_t *num)
*num = ARRAY_SIZE(early_gpio_table);
return early_gpio_table;
}
+
+/*
+ * Default GPIO settings before entering non-S5 sleep states.
+ * Configure A12: FPMCU_RST_ODL as GPO before entering sleep.
+ * This guarantees that A12's native3 function is disabled.
+ * See commit c41b0e8ea3b2714bf6d6d88a6b66c333c6919f07.
+ */
+static const struct pad_config default_sleep_gpio_table[] = {
+ PAD_CFG_GPO(GPP_A12, 1, DEEP), /* FPMCU_RST_ODL */
+};
+
+/*
+ * GPIO settings before entering S5, which are same as default_sleep_gpio_table
+ * but also, turn off FPMCU.
+ */
+static const struct pad_config s5_sleep_gpio_table[] = {
+ PAD_CFG_GPO(GPP_A12, 0, DEEP), /* FPMCU_RST_ODL */
+ PAD_CFG_GPO(GPP_C11, 0, DEEP), /* PCH_FP_PWR_EN */
+};
+
+const struct pad_config *variant_sleep_gpio_table(u8 slp_typ, size_t *num)
+{
+ if (slp_typ == ACPI_S5) {
+ *num = ARRAY_SIZE(s5_sleep_gpio_table);
+ return s5_sleep_gpio_table;
+ }
+ *num = ARRAY_SIZE(default_sleep_gpio_table);
+ return default_sleep_gpio_table;
+}
diff --git a/src/mainboard/google/hatch/variants/dratini/ramstage.c b/src/mainboard/google/hatch/variants/dratini/ramstage.c
new file mode 100644
index 0000000000..9b919fccd8
--- /dev/null
+++ b/src/mainboard/google/hatch/variants/dratini/ramstage.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2019 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#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/jinlon/Makefile.inc b/src/mainboard/google/hatch/variants/jinlon/Makefile.inc
index 6e5d8835db..c57d0908ab 100644
--- a/src/mainboard/google/hatch/variants/jinlon/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/jinlon/Makefile.inc
@@ -25,3 +25,4 @@ SPD_SOURCES += 16G_3200_4bg # 0b1001
bootblock-y += gpio.c
ramstage-y += gpio.c
+ramstage-y += ramstage.c
diff --git a/src/mainboard/google/hatch/variants/jinlon/gpio.c b/src/mainboard/google/hatch/variants/jinlon/gpio.c
index 12d96d8496..2bf97b1046 100644
--- a/src/mainboard/google/hatch/variants/jinlon/gpio.c
+++ b/src/mainboard/google/hatch/variants/jinlon/gpio.c
@@ -110,3 +110,32 @@ const struct pad_config *variant_early_gpio_table(size_t *num)
*num = ARRAY_SIZE(early_gpio_table);
return early_gpio_table;
}
+
+/*
+ * Default GPIO settings before entering non-S5 sleep states.
+ * Configure A12: FPMCU_RST_ODL as GPO before entering sleep.
+ * This guarantees that A12's native3 function is disabled.
+ * See commit c41b0e8ea3b2714bf6d6d88a6b66c333c6919f07.
+ */
+static const struct pad_config default_sleep_gpio_table[] = {
+ PAD_CFG_GPO(GPP_A12, 1, DEEP), /* FPMCU_RST_ODL */
+};
+
+/*
+ * GPIO settings before entering S5, which are same as default_sleep_gpio_table
+ * but also, turn off FPMCU.
+ */
+static const struct pad_config s5_sleep_gpio_table[] = {
+ PAD_CFG_GPO(GPP_A12, 0, DEEP), /* FPMCU_RST_ODL */
+ PAD_CFG_GPO(GPP_C11, 0, DEEP), /* PCH_FP_PWR_EN */
+};
+
+const struct pad_config *variant_sleep_gpio_table(u8 slp_typ, size_t *num)
+{
+ if (slp_typ == ACPI_S5) {
+ *num = ARRAY_SIZE(s5_sleep_gpio_table);
+ return s5_sleep_gpio_table;
+ }
+ *num = ARRAY_SIZE(default_sleep_gpio_table);
+ return default_sleep_gpio_table;
+}
diff --git a/src/mainboard/google/hatch/variants/jinlon/ramstage.c b/src/mainboard/google/hatch/variants/jinlon/ramstage.c
new file mode 100644
index 0000000000..9b919fccd8
--- /dev/null
+++ b/src/mainboard/google/hatch/variants/jinlon/ramstage.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2019 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#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);
+}