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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-04-08 11:44:53 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-04-11 18:12:21 +0200 |
| commit | 93f9a23f8771e718106d1c024b8d0a466f8ddcda (patch) | |
| tree | c90c30a91145ab167930848f822b0d0d06d90853 /ArmVirtPkg | |
| parent | 6c6ac050d97f3ae8e02dac2407dc69180390717c (diff) | |
| download | edk2-93f9a23f8771e718106d1c024b8d0a466f8ddcda.zip edk2-93f9a23f8771e718106d1c024b8d0a466f8ddcda.tar.gz edk2-93f9a23f8771e718106d1c024b8d0a466f8ddcda.tar.bz2 | |
ArmVirtPkg/ArmVirtPsciResetSystemLib: move to FDT client protocol
Instead of relying on VirtFdtDxe to detect the PSCI method, move our
EfiResetSystemLib to the FDT client protocol to interrogate the device
tree directly.
Since this library is only consumed by EmbeddedPkg/ResetRuntimeDxe, and
considering that the PCD is no longer set, and even removed completely in a
subsequent patch, this conversion is guaranteed to be safe.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'ArmVirtPkg')
| -rw-r--r-- | ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c | 29 | ||||
| -rw-r--r-- | ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf | 14 |
2 files changed, 36 insertions, 7 deletions
diff --git a/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c b/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c index 88332f5..b94d1b0 100644 --- a/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c +++ b/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.c @@ -26,9 +26,12 @@ #include <Library/EfiResetSystemLib.h>
#include <Library/ArmSmcLib.h>
#include <Library/ArmHvcLib.h>
+#include <Library/UefiBootServicesTableLib.h>
#include <IndustryStandard/ArmStdSmc.h>
+#include <Protocol/FdtClient.h>
+
STATIC UINT32 mArmPsciMethod;
RETURN_STATUS
@@ -37,8 +40,30 @@ ArmPsciResetSystemLibConstructor ( VOID
)
{
- mArmPsciMethod = PcdGet32 (PcdArmPsciMethod);
- return RETURN_SUCCESS;
+ EFI_STATUS Status;
+ FDT_CLIENT_PROTOCOL *FdtClient;
+ CONST VOID *Prop;
+
+ Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,
+ (VOID **)&FdtClient);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = FdtClient->FindCompatibleNodeProperty (FdtClient, "arm,psci-0.2",
+ "method", &Prop, NULL);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (AsciiStrnCmp (Prop, "hvc", 3) == 0) {
+ mArmPsciMethod = 1;
+ } else if (AsciiStrnCmp (Prop, "smc", 3) == 0) {
+ mArmPsciMethod = 2;
+ } else {
+ DEBUG ((EFI_D_ERROR, "%a: Unknown PSCI method \"%a\"\n", __FUNCTION__,
+ Prop));
+ return EFI_NOT_FOUND;
+ }
+ return EFI_SUCCESS;
}
/**
diff --git a/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf b/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf index 86d6104..9dc515a 100644 --- a/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf +++ b/ArmVirtPkg/Library/ArmVirtPsciResetSystemLib/ArmVirtPsciResetSystemLib.inf @@ -20,7 +20,7 @@ FILE_GUID = c81d76ed-66fa-44a3-ac4a-f163120187a9
MODULE_TYPE = BASE
VERSION_STRING = 1.0
- LIBRARY_CLASS = EfiResetSystemLib
+ LIBRARY_CLASS = EfiResetSystemLib|DXE_DRIVER DXE_RUNTIME_DRIVER
CONSTRUCTOR = ArmPsciResetSystemLibConstructor
[Sources]
@@ -33,10 +33,14 @@ EmbeddedPkg/EmbeddedPkg.dec
[LibraryClasses]
- DebugLib
- BaseLib
ArmSmcLib
ArmHvcLib
+ BaseLib
+ DebugLib
+ UefiBootServicesTableLib
+
+[Protocols]
+ gFdtClientProtocolGuid ## CONSUMES
-[Pcd]
- gArmVirtTokenSpaceGuid.PcdArmPsciMethod
+[Depex]
+ gFdtClientProtocolGuid
|