From 9b05af367fde33fc620c4cd759c2b09cdc036cc9 Mon Sep 17 00:00:00 2001 From: Richard Spiegel Date: Wed, 16 May 2018 12:09:37 -0700 Subject: soc/amd/stoneyridge/acpi: Create a GPIO library There are some acpigen functionality that have not been implemented. In order to implement them, ACPI GPIO functions to read and write to the control MMIO of a particular pin is needed. So as a preliminary task to implementing acpigen functions, create a library with functions to be accessed by acpigen generated ACPI code. BUG=b:79546790 TEST=Build grunt, more tests with commit 0f2acbd6b1. Change-Id: I21c014b7f2698dd9193dae3113b18ee2a7303bcf Signed-off-by: Richard Spiegel Reviewed-on: https://review.coreboot.org/26334 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/soc/amd/stoneyridge/acpi/gpio_lib.asl | 132 ++++++++++++++++++++++++++++ src/soc/amd/stoneyridge/acpi/soc.asl | 3 + src/soc/amd/stoneyridge/include/soc/iomap.h | 1 + 3 files changed, 136 insertions(+) create mode 100644 src/soc/amd/stoneyridge/acpi/gpio_lib.asl (limited to 'src/soc') 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 + +/* 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 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 -- cgit v1.2.3