From: Pete Batard <pete@akeo.ie>
To: edk2-devel@lists.01.org
Subject: [PATCH v3 edk2-platforms 02/23] Silicon/Broadcom/Bcm283x: Add GpioLib
Date: Mon, 28 Jan 2019 12:44:24 +0000 [thread overview]
Message-ID: <20190128124445.9868-3-pete@akeo.ie> (raw)
In-Reply-To: <20190128124445.9868-1-pete@akeo.ie>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Pete Batard <pete@akeo.ie>
---
Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.c | 88 ++++++++++++++++++++
Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.inf | 39 +++++++++
Silicon/Broadcom/Include/IndustryStandard/Bcm2836Gpio.h | 60 +++++++++++++
3 files changed, 187 insertions(+)
diff --git a/Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.c b/Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.c
new file mode 100644
index 000000000000..eb6accafb01e
--- /dev/null
+++ b/Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.c
@@ -0,0 +1,88 @@
+/** @file
+ *
+ * GPIO manipulation.
+ *
+ * Copyright (c) 2018, Andrei Warkentin <andrey.warkentin@gmail.com>
+ *
+ * This program and the accompanying materials
+ * are licensed and made available under the terms and conditions of the BSD License
+ * which accompanies this distribution. The full text of the license may be found at
+ * http://opensource.org/licenses/bsd-license.php
+ *
+ * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ *
+ **/
+
+#include <Uefi.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/IoLib.h>
+#include <IndustryStandard/Bcm2836.h>
+#include <IndustryStandard/Bcm2836Gpio.h>
+
+STATIC
+VOID
+GpioFSELModify (
+ IN UINTN RegIndex,
+ IN UINT32 ModifyMask,
+ IN UINT32 FunctionMask
+ )
+{
+ UINT32 Val;
+ EFI_PHYSICAL_ADDRESS Reg;
+
+ Reg = RegIndex * sizeof (UINT32) + GPIO_GPFSEL0;
+
+ ASSERT (Reg <= GPIO_GPFSEL5);
+ ASSERT ((~ModifyMask & FunctionMask) == 0);
+
+ Val = MmioRead32 (Reg);
+ Val &= ~ModifyMask;
+ Val |= FunctionMask;
+ MmioWrite32 (Reg, Val);
+}
+
+VOID
+GpioPinFuncSet (
+ IN UINTN Pin,
+ IN UINTN Function
+ )
+{
+ UINTN RegIndex;
+ UINTN SelIndex;
+ UINT32 ModifyMask;
+ UINT32 FunctionMask;
+
+ ASSERT (Pin < GPIO_PINS);
+ ASSERT (Function <= GPIO_FSEL_MASK);
+
+ RegIndex = Pin / 10;
+ SelIndex = Pin % 10;
+
+ ModifyMask = GPIO_FSEL_MASK << (SelIndex * GPIO_FSEL_BITS_PER_PIN);
+ FunctionMask = Function << (SelIndex * GPIO_FSEL_BITS_PER_PIN);
+ GpioFSELModify (RegIndex, ModifyMask, FunctionMask);
+}
+
+UINTN
+GpioPinFuncGet (
+ IN UINTN Pin
+ )
+{
+ UINT32 Val;
+ UINTN RegIndex;
+ UINTN SelIndex;
+ EFI_PHYSICAL_ADDRESS Reg;
+
+ ASSERT (Pin < GPIO_PINS);
+
+ RegIndex = Pin / 10;
+ SelIndex = Pin % 10;
+ Reg = RegIndex * sizeof (UINT32) + GPIO_GPFSEL0;
+
+ Val = MmioRead32 (Reg);
+ Val >>= SelIndex * GPIO_FSEL_BITS_PER_PIN;
+ Val &= GPIO_FSEL_MASK;
+ return Val;
+}
diff --git a/Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.inf b/Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.inf
new file mode 100644
index 000000000000..68ebe44e3d1c
--- /dev/null
+++ b/Silicon/Broadcom/Bcm283x/Library/GpioLib/GpioLib.inf
@@ -0,0 +1,39 @@
+#/** @file
+#
+# Manipulate GPIOs.
+#
+# Copyright (c) 2018, Andrei Warkentin <andrey.warkentin@gmail.com>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x0001001A
+ BASE_NAME = GpioLib
+ FILE_GUID = B9F59B6B-B105-41C7-8F5A-2C60DD7FD7AB
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = GpioLib
+
+[Sources]
+ GpioLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ MdePkg/MdePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ Silicon/Broadcom/Bcm283x/Bcm283x.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ IoLib
+
+[Guids]
diff --git a/Silicon/Broadcom/Include/IndustryStandard/Bcm2836Gpio.h b/Silicon/Broadcom/Include/IndustryStandard/Bcm2836Gpio.h
new file mode 100644
index 000000000000..45774b639ca8
--- /dev/null
+++ b/Silicon/Broadcom/Include/IndustryStandard/Bcm2836Gpio.h
@@ -0,0 +1,60 @@
+/** @file
+ *
+ * Copyright (c) 2018, Andrei Warkentin <andrey.warkentin@gmail.com>
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ *
+ * This program and the accompanying materials
+ * are licensed and made available under the terms and conditions of the BSD License
+ * which accompanies this distribution. The full text of the license may be found at
+ * http://opensource.org/licenses/bsd-license.php
+ *
+ * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+ *
+ **/
+
+#ifndef __BCM2836_GPIO_H__
+#define __BCM2836_GPIO_H__
+
+#define GPIO_BASE_ADDRESS (BCM2836_SOC_REGISTERS + 0x00200000)
+
+#define GPIO_GPFSEL0 (GPIO_BASE_ADDRESS + 0x00)
+#define GPIO_GPFSEL1 (GPIO_BASE_ADDRESS + 0x04)
+#define GPIO_GPFSEL2 (GPIO_BASE_ADDRESS + 0x08)
+#define GPIO_GPFSEL3 (GPIO_BASE_ADDRESS + 0x0C)
+#define GPIO_GPFSEL4 (GPIO_BASE_ADDRESS + 0x10)
+#define GPIO_GPFSEL5 (GPIO_BASE_ADDRESS + 0x14)
+
+#define GPIO_GPCLR0 (GPIO_BASE_ADDRESS + 0x28)
+#define GPIO_GPCLR1 (GPIO_BASE_ADDRESS + 0x2C)
+
+#define GPIO_GPSET0 (GPIO_BASE_ADDRESS + 0x1C)
+#define GPIO_GPSET1 (GPIO_BASE_ADDRESS + 0x20)
+
+#define GPIO_FSEL_INPUT 0x0
+#define GPIO_FSEL_OUTPUT 0x1
+#define GPIO_FSEL_ALT0 0x4
+#define GPIO_FSEL_ALT1 0x5
+#define GPIO_FSEL_ALT2 0x6
+#define GPIO_FSEL_ALT3 0x7
+#define GPIO_FSEL_ALT4 0x3
+#define GPIO_FSEL_ALT5 0x2
+
+#define GPIO_FSEL_PINS_PER_REGISTER 10
+#define GPIO_FSEL_BITS_PER_PIN 3
+#define GPIO_FSEL_MASK ((1 << GPIO_FSEL_BITS_PER_PIN) - 1)
+
+#define GPIO_PINS 54
+
+VOID
+GpioPinFuncSet (
+ IN UINTN Pin,
+ IN UINTN Function
+ );
+
+UINTN
+GpioPinFuncGet (
+ IN UINTN Pin
+ );
+
+#endif /* __BCM2836_GPIO_H__ */
--
2.17.0.windows.1
next prev parent reply other threads:[~2019-01-28 12:45 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-28 12:44 [PATCH v3 edk2-platforms 00/23] Platform/Raspberry: Add Raspberry Pi 3 support Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 01/23] Silicon/Broadcom/Bcm282x: Add interrupt driver Pete Batard
2019-01-28 12:59 ` Ard Biesheuvel
2019-01-28 12:44 ` Pete Batard [this message]
2019-01-28 13:02 ` [PATCH v3 edk2-platforms 02/23] Silicon/Broadcom/Bcm283x: Add GpioLib Ard Biesheuvel
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 03/23] Platform/Raspberry/Pi3: Add ACPI tables Pete Batard
2019-01-28 13:24 ` Ard Biesheuvel
2019-01-29 12:54 ` Pete Batard
2019-01-29 12:57 ` Ard Biesheuvel
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 04/23] Platform/Raspberry/Pi3: Add reset and memory init libraries Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 05/23] Platform/Raspberry/Pi3: Add platform library Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 06/23] Platform/Raspberry/Pi3: Add RTC library Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 07/23] Platform/Raspberry/Pi3: Add firmware driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 08/23] Platform/Raspberry/Pi3: Add platform config driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 09/23] Platform/Raspberry/Pi3: Add SMBIOS driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 10/23] Platform/Raspberry/Pi3: Add display driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 11/23] Platform/Raspberry/Pi3: Add console driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 12/23] Platform/Raspberry/Pi3: Add NV storage driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 13/23] Platform/Raspberry/Pi3: Add Device Tree driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 14/23] Platform/Raspberry/Pi3: Add base MMC driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 15/23] Platform/Raspberry/Pi3: Add Arasan " Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 16/23] Platform/Raspberry/Pi3: Add SD Host driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 17/23] Platform/Raspberry/Pi3: Add platform boot manager and helper libraries Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 18/23] Platform/Raspberry/Pi3: Add USB host driver Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 19/23] Platform/Raspberry/Pi3: Add platform Pete Batard
2019-01-28 13:10 ` Ard Biesheuvel
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 20/23] Platform/Raspberry/Pi3: Add platform readme Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 21/23] Platform/Raspberry/Pi3 *NON-OSI*: Add ATF binaries Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 2/23] Platform/Raspberry/Pi3 *NON-OSI*: Add Device Tree binaries Pete Batard
2019-01-28 12:44 ` [PATCH v3 edk2-platforms 23/23] Platform/Raspberry/Pi3 *NON-OSI*: Add logo driver Pete Batard
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