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      1 /** @file
      2 *
      3 *  Copyright (c) 2011-2012, ARM Limited. All rights reserved.
      4 *
      5 *  This program and the accompanying materials
      6 *  are licensed and made available under the terms and conditions of the BSD License
      7 *  which accompanies this distribution.  The full text of the license may be found at
      8 *  http://opensource.org/licenses/bsd-license.php
      9 *
     10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     12 *
     13 **/
     14 
     15 #include <Library/IoLib.h>
     16 #include <Library/ArmPlatformLib.h>
     17 #include <Library/DebugLib.h>
     18 #include <Library/PcdLib.h>
     19 
     20 #include <Omap3530/Omap3530.h>
     21 #include <BeagleBoard.h>
     22 
     23 VOID
     24 PadConfiguration (
     25   BEAGLEBOARD_REVISION Revision
     26   );
     27 
     28 VOID
     29 ClockInit (
     30   VOID
     31   );
     32 
     33 /**
     34   Detect board revision
     35 
     36   @return Board revision
     37 **/
     38 BEAGLEBOARD_REVISION
     39 BeagleBoardGetRevision (
     40   VOID
     41   )
     42 {
     43   UINT32 OldPinDir;
     44   UINT32 Revision;
     45 
     46   // Read GPIO 171, 172, 173
     47   OldPinDir = MmioRead32 (GPIO6_BASE + GPIO_OE);
     48   MmioWrite32(GPIO6_BASE + GPIO_OE, (OldPinDir | BIT11 | BIT12 | BIT13));
     49   Revision = MmioRead32 (GPIO6_BASE + GPIO_DATAIN);
     50 
     51   // Restore I/O settings
     52   MmioWrite32 (GPIO6_BASE + GPIO_OE, OldPinDir);
     53 
     54   return (BEAGLEBOARD_REVISION)((Revision >> 11) & 0x7);
     55 }
     56 
     57 /**
     58   Return the current Boot Mode
     59 
     60   This function returns the boot reason on the platform
     61 
     62 **/
     63 EFI_BOOT_MODE
     64 ArmPlatformGetBootMode (
     65   VOID
     66   )
     67 {
     68   return BOOT_WITH_FULL_CONFIGURATION;
     69 }
     70 
     71 /**
     72   Initialize controllers that must setup at the early stage
     73 
     74   Some peripherals must be initialized in Secure World.
     75   For example, some L2x0 requires to be initialized in Secure World
     76 
     77 **/
     78 RETURN_STATUS
     79 ArmPlatformInitialize (
     80   IN  UINTN                     MpId
     81   )
     82 {
     83   BEAGLEBOARD_REVISION Revision;
     84 
     85   Revision = BeagleBoardGetRevision();
     86 
     87   // Set up Pin muxing.
     88   PadConfiguration (Revision);
     89 
     90   // Set up system clocking
     91   ClockInit ();
     92 
     93   // Turn off the functional clock for Timer 3
     94   MmioAnd32 (CM_FCLKEN_PER, 0xFFFFFFFF ^ CM_ICLKEN_PER_EN_GPT3_ENABLE );
     95   ArmDataSynchronizationBarrier ();
     96 
     97   // Clear IRQs
     98   MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);
     99   ArmDataSynchronizationBarrier ();
    100 
    101   return RETURN_SUCCESS;
    102 }
    103 
    104 /**
    105   Initialize the system (or sometimes called permanent) memory
    106 
    107   This memory is generally represented by the DRAM.
    108 
    109 **/
    110 VOID
    111 ArmPlatformInitializeSystemMemory (
    112   VOID
    113   )
    114 {
    115   // We do not need to initialize the System Memory on RTSM
    116 }
    117 
    118 VOID
    119 ArmPlatformGetPlatformPpiList (
    120   OUT UINTN                   *PpiListSize,
    121   OUT EFI_PEI_PPI_DESCRIPTOR  **PpiList
    122   )
    123 {
    124   *PpiListSize = 0;
    125   *PpiList = NULL;
    126 }
    127 
    128 UINTN
    129 ArmPlatformGetCorePosition (
    130   IN UINTN MpId
    131   )
    132 {
    133   return 1;
    134 }
    135 
    136