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/** @file
*
* Copyright (c) 2011-2012, ARM Limited. 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 <Library/IoLib.h>
#include <Library/ArmPlatformLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Omap3530/Omap3530.h>
#include <BeagleBoard.h>
VOID
PadConfiguration (
BEAGLEBOARD_REVISION Revision
);
VOID
ClockInit (
VOID
);
/**
Detect board revision
@return Board revision
**/
BEAGLEBOARD_REVISION
BeagleBoardGetRevision (
VOID
)
{
UINT32 OldPinDir;
UINT32 Revision;
// Read GPIO 171, 172, 173
OldPinDir = MmioRead32 (GPIO6_BASE + GPIO_OE);
MmioWrite32(GPIO6_BASE + GPIO_OE, (OldPinDir | BIT11 | BIT12 | BIT13));
Revision = MmioRead32 (GPIO6_BASE + GPIO_DATAIN);
// Restore I/O settings
MmioWrite32 (GPIO6_BASE + GPIO_OE, OldPinDir);
return (BEAGLEBOARD_REVISION)((Revision >> 11) & 0x7);
}
/**
Return the current Boot Mode
This function returns the boot reason on the platform
**/
EFI_BOOT_MODE
ArmPlatformGetBootMode (
VOID
)
{
return BOOT_WITH_FULL_CONFIGURATION;
}
/**
Initialize controllers that must setup at the early stage
Some peripherals must be initialized in Secure World.
For example, some L2x0 requires to be initialized in Secure World
**/
RETURN_STATUS
ArmPlatformInitialize (
IN UINTN MpId
)
{
BEAGLEBOARD_REVISION Revision;
Revision = BeagleBoardGetRevision();
// Set up Pin muxing.
PadConfiguration (Revision);
// Set up system clocking
ClockInit ();
// Turn off the functional clock for Timer 3
MmioAnd32 (CM_FCLKEN_PER, 0xFFFFFFFF ^ CM_ICLKEN_PER_EN_GPT3_ENABLE );
ArmDataSyncronizationBarrier ();
// Clear IRQs
MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);
ArmDataSyncronizationBarrier ();
return RETURN_SUCCESS;
}
/**
Initialize the system (or sometimes called permanent) memory
This memory is generally represented by the DRAM.
**/
VOID
ArmPlatformInitializeSystemMemory (
VOID
)
{
// We do not need to initialize the System Memory on RTSM
}
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