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-rw-r--r--src/soc/amd/stoneyridge/acpi/gpio_lib.asl132
-rw-r--r--src/soc/amd/stoneyridge/acpi/soc.asl3
-rw-r--r--src/soc/amd/stoneyridge/include/soc/iomap.h1
3 files changed, 136 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/acpi/gpio_lib.asl b/src/soc/amd/stoneyridge/acpi/gpio_lib.asl
new file mode 100644
index 0000000000..fbd6525f53
--- /dev/null
+++ b/src/soc/amd/stoneyridge/acpi/gpio_lib.asl
@@ -0,0 +1,132 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 Advanced Micro Devices, Inc.
+ *
+ * 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 <soc/iomap.h>
+
+/* Get pin control MMIO address */
+Method (GPAD, 0x1)
+{
+ /* Arg0 - GPIO pin number */
+ Return (Add(Multiply(Arg0, 4), GPIO_CONTROL_BASE))
+}
+
+/* Read pin control dword */
+Method (GPRD, 0x1, Serialized)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ Store (Arg0, Local0)
+ OperationRegion (GPDW, SystemMemory, Local0, 4)
+ Field (GPDW, AnyAcc, NoLock, Preserve) {
+ TEMP, 32
+ }
+ Return (TEMP)
+}
+
+/* Write pin control dword */
+Method (GPWR, 0x2, Serialized)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ /* Arg1 - Value for control register */
+ Store (Arg0, Local0)
+ OperationRegion (GPDW, SystemMemory, Local0, 4)
+ Field (GPDW, AnyAcc, NoLock, Preserve) {
+ TEMP,32
+ }
+ Store (Arg1, TEMP)
+}
+
+Method (GPGB, 0x2)
+{
+ /*
+ * Returns the desired byte
+ * Arg0 - GPIO pin control MMIO address
+ * Arg1 - Desired byte (0 through 3)
+ */
+ Store (Multiply(Arg1, 8), Local2)
+ Return (And(ShiftRight(GPRD(Arg0), Local2), 0x000000FF))
+}
+
+Method (GPSB, 0x3)
+{
+ /*
+ * Reads dword, replace byte, write back dword
+ * Arg0 - GPIO pin control MMIO address
+ * Arg1 - Desired byte (0 through 3)
+ * Arg2 - Value
+ */
+ Store (Multiply(Arg1, 8), Local2)
+ And(ShiftRight(GPRD(Arg0), Local2), 0xFFFFFF00, Local3)
+ ShiftLeft (Or(And(Arg2, 0x000000FF),Local3), Local2, Local4)
+ GPWR (Arg0, Local4)
+}
+
+/* Read pin control byte 0 */
+Method (GPR0, 0x1)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ Return (GPGB(Arg0, 0))
+}
+
+/* Read pin control byte 1 */
+Method (GPR1, 0x1)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ Return (GPGB(Arg0, 1))
+}
+
+/* Read pin control byte 2 */
+Method (GPR2, 0x1)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ Return (GPGB(Arg0, 2))
+}
+
+/* Read pin control byte 3 */
+Method (GPR3, 0x1)
+{
+ Return (GPGB(Arg0, 3))
+}
+
+/* Write pin control byte 0 */
+Method (GPW0, 0x2)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ /* Arg1 - Value for control register */
+ GPSB (Arg0, 0, Arg1)
+}
+
+/* Write pin control byte 1 */
+Method (GPW1, 0x2)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ /* Arg1 - Value for control register */
+ GPSB (Arg0, 1, Arg1)
+}
+
+/* Write pin control byte 2 */
+Method (GPW2, 0x2)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ /* Arg1 - Value for control register */
+ GPSB (Arg0, 2, Arg1)
+}
+
+/* Write pin control byte 3 */
+Method (GPW3, 0x2)
+{
+ /* Arg0 - GPIO pin control MMIO address */
+ /* Arg1 - Value for control register */
+ GPSB (Arg0, 3, Arg1)
+}
diff --git a/src/soc/amd/stoneyridge/acpi/soc.asl b/src/soc/amd/stoneyridge/acpi/soc.asl
index d7772948ef..6fd838a56d 100644
--- a/src/soc/amd/stoneyridge/acpi/soc.asl
+++ b/src/soc/amd/stoneyridge/acpi/soc.asl
@@ -26,3 +26,6 @@ Device(PCI0) {
/* Describe the devices in the Southbridge */
#include "sb_fch.asl"
+
+/* Add GPIO library */
+#include <gpio_lib.asl>
diff --git a/src/soc/amd/stoneyridge/include/soc/iomap.h b/src/soc/amd/stoneyridge/include/soc/iomap.h
index 01171c3cf8..341d97d687 100644
--- a/src/soc/amd/stoneyridge/include/soc/iomap.h
+++ b/src/soc/amd/stoneyridge/include/soc/iomap.h
@@ -39,6 +39,7 @@
#define BIOSRAM_MMIO_BASE 0xfed80500
#define IOMUX_MMIO_BASE 0xfed80d00
#define MISC_MMIO_BASE 0xfed80e00
+#define GPIO_CONTROL_BASE 0xfed81500
#define XHCI_ACPI_PM_MMIO_BASE 0xfed81c00
#define AOAC_MMIO_BASE 0xfed81e00