1 /** @file
2 *
3 * Copyright (c) 2011-2014, 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/ArmGicLib.h>
17 #include <Library/ArmPlatformLib.h>
18 #include <Library/DebugLib.h>
19 #include <Library/PcdLib.h>
20
21 #include <Drivers/PL310L2Cache.h>
22 #include <Drivers/SP804Timer.h>
23
24 #include <ArmPlatform.h>
25
26 // Initialize GICv3 to expose it as a GICv2 as UEFI does not support GICv3 yet
27 VOID
28 InitializeGicV3 (
29 VOID
30 );
31
32 /**
33 Initialize the Secure peripherals and memory regions
34
35 If Trustzone is supported by your platform then this function makes the required initialization
36 of the secure peripherals and memory regions.
37
38 **/
39 VOID
ArmPlatformSecTrustzoneInit(IN UINTN MpId)40 ArmPlatformSecTrustzoneInit (
41 IN UINTN MpId
42 )
43 {
44 // No TZPC or TZASC on RTSM to initialize
45 }
46
47 /**
48 Initialize controllers that must setup at the early stage
49
50 Some peripherals must be initialized in Secure World.
51 For example, some L2x0 requires to be initialized in Secure World
52
53 **/
54 RETURN_STATUS
ArmPlatformSecInitialize(IN UINTN MpId)55 ArmPlatformSecInitialize (
56 IN UINTN MpId
57 )
58 {
59 UINT32 Identification;
60
61 // If it is not the primary core then there is nothing to do
62 if (!ArmPlatformIsPrimaryCore (MpId)) {
63 return RETURN_SUCCESS;
64 }
65
66 // Configure periodic timer (TIMER0) for 1MHz operation
67 MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER0_TIMCLK);
68 // Configure 1MHz clock
69 MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER1_TIMCLK);
70 // Configure SP810 to use 1MHz clock and disable
71 MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);
72 // Configure SP810 to use 1MHz clock and disable
73 MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER3_EN, SP810_SYS_CTRL_TIMER3_TIMCLK);
74
75 // Read the GIC Identification Register
76 Identification = ArmGicGetInterfaceIdentification (PcdGet32 (PcdGicInterruptInterfaceBase));
77
78 // Check if we are GICv3
79 if (ARM_GIC_ICCIIDR_GET_ARCH_VERSION(Identification) >= 0x3) {
80 InitializeGicV3 ();
81 }
82
83 return RETURN_SUCCESS;
84 }
85
86 /**
87 Call before jumping to Normal World
88
89 This function allows the firmware platform to do extra actions before
90 jumping to the Normal World
91
92 **/
93 VOID
ArmPlatformSecExtraAction(IN UINTN MpId,OUT UINTN * JumpAddress)94 ArmPlatformSecExtraAction (
95 IN UINTN MpId,
96 OUT UINTN* JumpAddress
97 )
98 {
99 *JumpAddress = PcdGet64 (PcdFvBaseAddress);
100 }
101