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 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 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 (PcdGet64 (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 94 ArmPlatformSecExtraAction ( 95 IN UINTN MpId, 96 OUT UINTN* JumpAddress 97 ) 98 { 99 *JumpAddress = PcdGet64 (PcdFvBaseAddress); 100 } 101
