diff --git a/ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.c b/ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.c new file mode 100644 index 0000000000..d6d26bce50 --- /dev/null +++ b/ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.c @@ -0,0 +1,115 @@ +/** @file + ResetSystemLib implementation using PSCI calls + + Copyright (c) 2017, Linaro Ltd. 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. + +**/ + +#include + +#include +#include +#include +#include + +#include + +/** + This function causes a system-wide reset (cold reset), in which + all circuitry within the system returns to its initial state. This type of reset + is asynchronous to system operation and operates without regard to + cycle boundaries. + + If this function returns, it means that the system does not support cold reset. +**/ +VOID +EFIAPI +ResetCold ( + VOID + ) +{ + ARM_SMC_ARGS ArmSmcArgs; + + // Send a PSCI 0.2 SYSTEM_RESET command + ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_RESET; + ArmCallSmc (&ArmSmcArgs); +} + +/** + This function causes a system-wide initialization (warm reset), in which all processors + are set to their initial state. Pending cycles are not corrupted. + + If this function returns, it means that the system does not support warm reset. +**/ +VOID +EFIAPI +ResetWarm ( + VOID + ) +{ + // Map a warm reset into a cold reset + ResetCold (); +} + +/** + This function causes the system to enter a power state equivalent + to the ACPI G2/S5 or G3 states. + + If this function returns, it means that the system does not support shutdown reset. +**/ +VOID +EFIAPI +ResetShutdown ( + VOID + ) +{ + ARM_SMC_ARGS ArmSmcArgs; + + // Send a PSCI 0.2 SYSTEM_OFF command + ArmSmcArgs.Arg0 = ARM_SMC_ID_PSCI_SYSTEM_OFF; + ArmCallSmc (&ArmSmcArgs); +} + +/** + This function causes the system to enter S3 and then wake up immediately. + + If this function returns, it means that the system does not support S3 feature. +**/ +VOID +EFIAPI +EnterS3WithImmediateWake ( + VOID + ) +{ + // Not implemented +} + +/** + This function causes a systemwide reset. The exact type of the reset is + defined by the EFI_GUID that follows the Null-terminated Unicode string passed + into ResetData. If the platform does not recognize the EFI_GUID in ResetData + the platform must pick a supported reset type to perform.The platform may + optionally log the parameters from any non-normal reset that occurs. + + @param[in] DataSize The size, in bytes, of ResetData. + @param[in] ResetData The data buffer starts with a Null-terminated string, + followed by the EFI_GUID. +**/ +VOID +EFIAPI +ResetPlatformSpecific ( + IN UINTN DataSize, + IN VOID *ResetData + ) +{ + // Map the platform specific reset as reboot + ResetCold (); +} diff --git a/ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.inf b/ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.inf new file mode 100644 index 0000000000..5a1ee976e5 --- /dev/null +++ b/ArmPkg/Library/ArmSmcPsciResetSystemLib/ArmSmcPsciResetSystemLib.inf @@ -0,0 +1,35 @@ +#/** @file +# ResetSystemLib implementation using PSCI calls +# +# Copyright (c) 2017, Linaro Ltd. 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. +# +#**/ + +[Defines] + INF_VERSION = 0x00010019 + BASE_NAME = ArmSmcPsciResetSystemLib + FILE_GUID = 18B12C83-7718-4D83-ADA4-87F2FE698DD4 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = ResetSystemLib + +[Sources] + ArmSmcPsciResetSystemLib.c + +[Packages] + ArmPkg/ArmPkg.dec + MdeModulePkg/MdeModulePkg.dec + MdePkg/MdePkg.dec + +[LibraryClasses] + ArmSmcLib + BaseLib + DebugLib