3 * Copyright (c) 2011-2012, ARM Limited. All rights reserved.
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
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.
15 #include <Library/IoLib.h>
16 #include <Library/ArmPlatformLib.h>
17 #include <Library/DebugLib.h>
18 #include <Library/PcdLib.h>
20 #include <Omap3530/Omap3530.h>
21 #include <BeagleBoard.h>
25 BEAGLEBOARD_REVISION Revision
36 @return Board revision
39 BeagleBoardGetRevision (
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
);
51 // Restore I/O settings
52 MmioWrite32 (GPIO6_BASE
+ GPIO_OE
, OldPinDir
);
54 return (BEAGLEBOARD_REVISION
)((Revision
>> 11) & 0x7);
58 Return if Trustzone is supported by your platform
60 A non-zero value must be returned if you want to support a Secure World on your platform.
61 ArmPlatformTrustzoneInit() will later set up the secure regions.
62 This function can return 0 even if Trustzone is supported by your processor. In this case,
63 the platform will continue to run in Secure World.
65 @return A non-zero value if Trustzone supported.
69 ArmPlatformTrustzoneSupported (
73 // The BeagleBoard starts in Normal World (Non Secure World)
78 Remap the memory at 0x0
80 Some platform requires or gives the ability to remap the memory at the address 0x0.
81 This function can do nothing if this feature is not relevant to your platform.
85 ArmPlatformBootRemapping (
89 // Do nothing for the BeagleBoard
93 Return the current Boot Mode
95 This function returns the boot reason on the platform
99 ArmPlatformGetBootMode (
103 return BOOT_WITH_FULL_CONFIGURATION
;
107 Initialize controllers that must setup at the early stage
109 Some peripherals must be initialized in Secure World.
110 For example, some L2x0 requires to be initialized in Secure World
114 ArmPlatformInitialize (
118 BEAGLEBOARD_REVISION Revision
;
120 Revision
= BeagleBoardGetRevision();
122 // Set up Pin muxing.
123 PadConfiguration (Revision
);
125 // Set up system clocking
128 // Turn off the functional clock for Timer 3
129 MmioAnd32 (CM_FCLKEN_PER
, 0xFFFFFFFF ^ CM_ICLKEN_PER_EN_GPT3_ENABLE
);
130 ArmDataSyncronizationBarrier ();
133 MmioWrite32 (INTCPS_CONTROL
, INTCPS_CONTROL_NEWIRQAGR
);
134 ArmDataSyncronizationBarrier ();
136 return RETURN_SUCCESS
;
140 Initialize the system (or sometimes called permanent) memory
142 This memory is generally represented by the DRAM.
146 ArmPlatformInitializeSystemMemory (
150 // We do not need to initialize the System Memory on RTSM