diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-07-10 15:08:15 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@Edk2> | 2015-07-10 15:08:15 +0000 |
| commit | 35630cb6d9e94d3bc0afd87b726541e26c2eee4e (patch) | |
| tree | c56fe5becbfb31d8bca59d913588ba46fe840175 /ArmPlatformPkg | |
| parent | b1d4218a518f1c7e2cf1e509880f828f272c0194 (diff) | |
| download | edk2-platforms-35630cb6d9e94d3bc0afd87b726541e26c2eee4e.tar.xz | |
ArmPlatformPkg/ArmVExpressPkg: add ArmPlatformSysConfigLib for runtime
This adds a ArmPlatformSysConfigLib implementation that is usable by
DXE_RUNTIME_DRIVER modules. Since the system registers that this library
encapsulates are not usable at runtime, this driver allows access to
those registers only at boot time.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17925 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg')
2 files changed, 320 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.c b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.c new file mode 100644 index 0000000000..1f915e3b02 --- /dev/null +++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.c @@ -0,0 +1,283 @@ +/** @file ArmVExpressSysConfig.c
+
+ Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
+
+ 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 <Base.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+
+#include <Library/ArmPlatformSysConfigLib.h>
+#include <ArmPlatform.h>
+
+#include <Uefi.h>
+#include <Library/UefiRuntimeLib.h>
+
+//
+// SYS_CFGCTRL Bits
+//
+#define SYS_CFGCTRL_START BIT31
+#define SYS_CFGCTRL_READ (0 << 30)
+#define SYS_CFGCTRL_WRITE (1 << 30)
+#define SYS_CFGCTRL_FUNCTION(fun) (((fun ) & 0x3F) << 20)
+#define SYS_CFGCTRL_SITE(site) (((site) & 0x3) << 16)
+#define SYS_CFGCTRL_POSITION(pos) (((pos ) & 0xF) << 12)
+#define SYS_CFGCTRL_DEVICE(dev) ((dev ) & 0xFFF)
+
+//
+// SYS_CFGSTAT Bits
+//
+#define SYS_CFGSTAT_ERROR BIT1
+#define SYS_CFGSTAT_COMPLETE BIT0
+
+/****************************************************************************
+ *
+ * This file makes it easier to access the System Configuration Registers
+ * in the ARM Versatile Express motherboard.
+ *
+ ****************************************************************************/
+
+RETURN_STATUS
+ArmPlatformSysConfigInitialize (
+ VOID
+ )
+{
+ return RETURN_SUCCESS;
+}
+
+/***************************************
+ * GENERAL FUNCTION: AccessSysCfgRegister
+ * Interacts with
+ * SYS_CFGSTAT
+ * SYS_CFGDATA
+ * SYS_CFGCTRL
+ * for setting and for reading out values
+ ***************************************/
+
+RETURN_STATUS
+AccessSysCfgRegister (
+ IN UINT32 ReadWrite,
+ IN UINT32 Function,
+ IN UINT32 Site,
+ IN UINT32 Position,
+ IN UINT32 Device,
+ IN OUT UINT32* Data
+ )
+{
+ UINT32 SysCfgCtrl;
+
+ if (EfiAtRuntime ()) {
+ return RETURN_UNSUPPORTED;
+ }
+
+ // Clear the COMPLETE bit
+ MmioAnd32(ARM_VE_SYS_CFGSTAT_REG, ~SYS_CFGSTAT_COMPLETE);
+
+ // If writing, then set the data value
+ if(ReadWrite == SYS_CFGCTRL_WRITE) {
+ MmioWrite32(ARM_VE_SYS_CFGDATA_REG, *Data);
+ }
+
+ // Set the control value
+ SysCfgCtrl = SYS_CFGCTRL_START | ReadWrite | SYS_CFGCTRL_FUNCTION(Function) | SYS_CFGCTRL_SITE(Site) |
+ SYS_CFGCTRL_POSITION(Position) | SYS_CFGCTRL_DEVICE(Device);
+ MmioWrite32(ARM_VE_SYS_CFGCTRL_REG, SysCfgCtrl);
+
+ // Wait until the COMPLETE bit is set
+ while ((MmioRead32(ARM_VE_SYS_CFGSTAT_REG) & SYS_CFGSTAT_COMPLETE) == 0);
+
+ // Check for errors
+ if(MmioRead32(ARM_VE_SYS_CFGSTAT_REG) & SYS_CFGSTAT_ERROR) {
+ return RETURN_DEVICE_ERROR;
+ }
+
+ // If reading then get the data value
+ if(ReadWrite == SYS_CFGCTRL_READ) {
+ *Data = MmioRead32(ARM_VE_SYS_CFGDATA_REG);
+ }
+
+ return RETURN_SUCCESS;
+}
+
+RETURN_STATUS
+ArmPlatformSysConfigGet (
+ IN SYS_CONFIG_FUNCTION Function,
+ OUT UINT32* Value
+ )
+{
+ UINT32 Site;
+ UINT32 Position;
+ UINT32 Device;
+
+ Position = 0;
+ Device = 0;
+
+ // Intercept some functions
+ switch(Function) {
+
+ case SYS_CFG_OSC_SITE1:
+ Function = SYS_CFG_OSC;
+ Site = ARM_VE_DAUGHTERBOARD_1_SITE;
+ break;
+
+ case SYS_CFG_OSC_SITE2:
+ Function = SYS_CFG_OSC;
+ Site = ARM_VE_DAUGHTERBOARD_2_SITE;
+ break;
+
+ case SYS_CFG_MUXFPGA:
+ Site = *Value;
+ break;
+
+ case SYS_CFG_OSC:
+ case SYS_CFG_VOLT:
+ case SYS_CFG_AMP:
+ case SYS_CFG_TEMP:
+ case SYS_CFG_RESET:
+ case SYS_CFG_SCC:
+ case SYS_CFG_DVIMODE:
+ case SYS_CFG_POWER:
+ Site = ARM_VE_MOTHERBOARD_SITE;
+ break;
+
+ case SYS_CFG_SHUTDOWN:
+ case SYS_CFG_REBOOT:
+ case SYS_CFG_RTC:
+ default:
+ return RETURN_UNSUPPORTED;
+ }
+
+ return AccessSysCfgRegister (SYS_CFGCTRL_READ, Function, Site, Position, Device, Value);
+}
+
+RETURN_STATUS
+ArmPlatformSysConfigGetValues (
+ IN SYS_CONFIG_FUNCTION Function,
+ IN UINTN Size,
+ OUT UINT32* Values
+ )
+{
+ return RETURN_UNSUPPORTED;
+}
+
+RETURN_STATUS
+ArmPlatformSysConfigSet (
+ IN SYS_CONFIG_FUNCTION Function,
+ IN UINT32 Value
+ )
+{
+ UINT32 Site;
+ UINT32 Position;
+ UINT32 Device;
+
+ Position = 0;
+ Device = 0;
+
+ // Intercept some functions
+ switch(Function) {
+
+ case SYS_CFG_OSC_SITE1:
+ Function = SYS_CFG_OSC;
+ Site = ARM_VE_DAUGHTERBOARD_1_SITE;
+ break;
+
+ case SYS_CFG_OSC_SITE2:
+ Function = SYS_CFG_OSC;
+ Site = ARM_VE_DAUGHTERBOARD_2_SITE;
+ break;
+
+ case SYS_CFG_MUXFPGA:
+ Site = Value;
+ break;
+
+ case SYS_CFG_RESET:
+ case SYS_CFG_SCC:
+ case SYS_CFG_SHUTDOWN:
+ case SYS_CFG_REBOOT:
+ case SYS_CFG_DVIMODE:
+ case SYS_CFG_POWER:
+ Site = ARM_VE_MOTHERBOARD_SITE;
+ break;
+
+ case SYS_CFG_OSC:
+ case SYS_CFG_VOLT:
+ case SYS_CFG_AMP:
+ case SYS_CFG_TEMP:
+ case SYS_CFG_RTC:
+ default:
+ return RETURN_UNSUPPORTED;
+ }
+
+ return AccessSysCfgRegister (SYS_CFGCTRL_WRITE, Function, Site, Position, Device, &Value);
+}
+
+RETURN_STATUS
+ArmPlatformSysConfigSetDevice (
+ IN SYS_CONFIG_FUNCTION Function,
+ IN UINT32 Device,
+ IN UINT32 Value
+ )
+{
+ UINT32 Site;
+ UINT32 Position;
+
+ Position = 0;
+
+ // Intercept some functions
+ switch(Function) {
+ case SYS_CFG_SCC:
+#ifdef ARM_VE_SCC_BASE
+ if (EfiAtRuntime ()) {
+ return RETURN_UNSUPPORTED;
+ }
+ MmioWrite32 ((ARM_VE_SCC_BASE + (Device * 4)),Value);
+ return RETURN_SUCCESS;
+#else
+ // There is no System Configuration Controller on the Model
+ return RETURN_UNSUPPORTED;
+#endif
+
+ case SYS_CFG_OSC_SITE1:
+ Function = SYS_CFG_OSC;
+ Site = ARM_VE_DAUGHTERBOARD_1_SITE;
+ break;
+
+ case SYS_CFG_OSC_SITE2:
+ Function = SYS_CFG_OSC;
+ Site = ARM_VE_DAUGHTERBOARD_2_SITE;
+ break;
+
+ case SYS_CFG_MUXFPGA:
+ Site = Value;
+ break;
+
+ case SYS_CFG_RTC:
+ return RETURN_UNSUPPORTED;
+ //break;
+
+ case SYS_CFG_OSC:
+ case SYS_CFG_VOLT:
+ case SYS_CFG_AMP:
+ case SYS_CFG_TEMP:
+ case SYS_CFG_RESET:
+ case SYS_CFG_SHUTDOWN:
+ case SYS_CFG_REBOOT:
+ case SYS_CFG_DVIMODE:
+ case SYS_CFG_POWER:
+ Site = ARM_VE_MOTHERBOARD_SITE;
+ break;
+ default:
+ return RETURN_UNSUPPORTED;
+ }
+
+ return AccessSysCfgRegister (SYS_CFGCTRL_WRITE, Function, Site, Position, Device, &Value);
+}
diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.inf b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.inf new file mode 100644 index 0000000000..988250d930 --- /dev/null +++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.inf @@ -0,0 +1,37 @@ +#/** @file
+#
+# Component description file for ArmVExpressSysConfigRuntimeLib module
+#
+# Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
+# Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>
+#
+# 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 = 0x00010005
+ BASE_NAME = ArmVExpressSysConfigRuntimeLib
+ FILE_GUID = 6275b819-615c-4a36-814a-c1f330b4e5d9
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ArmPlatformSysConfigLib|DXE_RUNTIME_DRIVER
+
+[Sources.common]
+ ArmVExpressSysConfigRuntimeLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ArmPlatformPkg/ArmVExpressPkg/ArmVExpressPkg.dec
+ ArmPlatformPkg/ArmPlatformPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ IoLib
+ UefiRuntimeLib
|