diff options
| author | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
|---|---|---|
| committer | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
| commit | 2ef2b01e07c02db339f34004445734a2dbdd80e1 (patch) | |
| tree | 19532a6be8d8bdb0aef04bd00c1efb582f6dc841 /EmbeddedPkg/TemplateMetronomeDxe | |
| parent | f7753a96ba1653ddd31b01c198a352f6332ac404 (diff) | |
| download | edk2-platforms-2ef2b01e07c02db339f34004445734a2dbdd80e1.tar.xz | |
Adding support for BeagleBoard.
ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers.
EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell.
BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine).
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EmbeddedPkg/TemplateMetronomeDxe')
| -rw-r--r-- | EmbeddedPkg/TemplateMetronomeDxe/Metronome.c | 132 | ||||
| -rw-r--r-- | EmbeddedPkg/TemplateMetronomeDxe/TemplateMetronomeDxe.inf | 50 |
2 files changed, 182 insertions, 0 deletions
diff --git a/EmbeddedPkg/TemplateMetronomeDxe/Metronome.c b/EmbeddedPkg/TemplateMetronomeDxe/Metronome.c new file mode 100644 index 0000000000..861bf249cd --- /dev/null +++ b/EmbeddedPkg/TemplateMetronomeDxe/Metronome.c @@ -0,0 +1,132 @@ +/** @file
+
+ Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+
+ 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 <PiDxe.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/PcdLib.h>
+#include <Library/TimerLib.h>
+
+#include <Protocol/Metronome.h>
+
+
+
+/**
+ The WaitForTick() function waits for the number of ticks specified by
+ TickNumber from a known time source in the platform. If TickNumber of
+ ticks are detected, then EFI_SUCCESS is returned. The actual time passed
+ between entry of this function and the first tick is between 0 and
+ TickPeriod 100 nS units. If you want to guarantee that at least TickPeriod
+ time has elapsed, wait for two ticks. This function waits for a hardware
+ event to determine when a tick occurs. It is possible for interrupt
+ processing, or exception processing to interrupt the execution of the
+ WaitForTick() function. Depending on the hardware source for the ticks, it
+ is possible for a tick to be missed. This function cannot guarantee that
+ ticks will not be missed. If a timeout occurs waiting for the specified
+ number of ticks, then EFI_TIMEOUT is returned.
+
+ @param This The EFI_METRONOME_ARCH_PROTOCOL instance.
+ @param TickNumber Number of ticks to wait.
+
+ @retval EFI_SUCCESS The wait for the number of ticks specified by TickNumber
+ succeeded.
+ @retval EFI_TIMEOUT A timeout occurred waiting for the specified number of ticks.
+
+**/
+EFI_STATUS
+EFIAPI
+WaitForTick (
+ IN EFI_METRONOME_ARCH_PROTOCOL *This,
+ IN UINT32 TickNumber
+ )
+{
+ //
+ // Fill me in
+ //
+ MicroSecondDelay (10 * TickNumber);
+ return EFI_UNSUPPORTED;
+}
+
+
+
+/**
+ Interface stucture for the Metronome Architectural Protocol.
+
+ @par Protocol Description:
+ This protocol provides access to a known time source in the platform to the
+ core. The core uses this known time source to produce core services that
+ require calibrated delays.
+
+ @param WaitForTick
+ Waits for a specified number of ticks from a known time source
+ in the platform. The actual time passed between entry of this
+ function and the first tick is between 0 and TickPeriod 100 nS
+ units. If you want to guarantee that at least TickPeriod time
+ has elapsed, wait for two ticks.
+
+ @param TickPeriod
+ The period of platform's known time source in 100 nS units.
+ This value on any platform must be at least 10 uS, and must not
+ exceed 200 uS. The value in this field is a constant that must
+ not be modified after the Metronome architectural protocol is
+ installed. All consumers must treat this as a read-only field.
+
+**/
+EFI_METRONOME_ARCH_PROTOCOL gMetronome = {
+ WaitForTick,
+ 100
+};
+
+
+EFI_HANDLE gMetronomeHandle = NULL;
+
+
+
+/**
+ Initialize the state information for the CPU Architectural Protocol
+
+ @param ImageHandle of the loaded driver
+ @param SystemTable Pointer to the System Table
+
+ @retval EFI_SUCCESS Protocol registered
+ @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure
+ @retval EFI_DEVICE_ERROR Hardware problems
+
+**/
+EFI_STATUS
+MetronomeInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Do any hardware init required to make WaitForTick () to work here.
+ //
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &gMetronomeHandle,
+ &gEfiMetronomeArchProtocolGuid, &gMetronome,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
+
diff --git a/EmbeddedPkg/TemplateMetronomeDxe/TemplateMetronomeDxe.inf b/EmbeddedPkg/TemplateMetronomeDxe/TemplateMetronomeDxe.inf new file mode 100644 index 0000000000..9a4e53a703 --- /dev/null +++ b/EmbeddedPkg/TemplateMetronomeDxe/TemplateMetronomeDxe.inf @@ -0,0 +1,50 @@ +#%HEADER%
+#/** @file
+#
+# Component discription file for Bds module
+#
+# Copyright (c) 2008, Apple, Inc <BR>
+# 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 = 0x00010005
+ BASE_NAME = TemplateMetronomeDxe
+ FILE_GUID = 4C6E0267-C77D-410D-8100-1495911A989D
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = MetronomeInitialize
+
+
+[Sources.common]
+ Metronome.c
+
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ UefiLib
+ UefiBootServicesTableLib
+ DebugLib
+ PrintLib
+ UefiDriverEntryPoint
+ TimerLib
+
+[Guids]
+
+
+[Protocols]
+ gEfiMetronomeArchProtocolGuid
+
+[depex]
+ TRUE
|