mirror of https://github.com/acidanthera/audk.git
55 lines
1.7 KiB
ArmAsm
55 lines
1.7 KiB
ArmAsm
//
|
|
// 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 <AsmMacroIoLib.h>
|
|
#include <Base.h>
|
|
#include <Library/ArmPlatformSecLib.h>
|
|
#include <ArmPlatform.h>
|
|
#include <AutoGen.h>
|
|
|
|
.text
|
|
.align 3
|
|
|
|
GCC_ASM_EXPORT(ArmPlatformSecBootAction)
|
|
GCC_ASM_EXPORT(ArmPlatformSecBootMemoryInit)
|
|
|
|
/**
|
|
Call at the beginning of the platform boot up
|
|
|
|
This function allows the firmware platform to do extra actions at the early
|
|
stage of the platform power up.
|
|
|
|
Note: This function must be implemented in assembler as there is no stack set up yet
|
|
|
|
**/
|
|
ASM_PFX(ArmPlatformSecBootAction):
|
|
LoadConstantToReg (ARM_EB_SYS_FLAGS_NV_REG, r0)
|
|
ldr r0, [r0]
|
|
cmp r0, #0
|
|
bxeq lr
|
|
bxne r0
|
|
|
|
/**
|
|
Initialize the memory where the initial stacks will reside
|
|
|
|
This memory can contain the initial stacks (Secure and Secure Monitor stacks).
|
|
In some platform, this region is already initialized and the implementation of this function can
|
|
do nothing. This memory can also represent the Secure RAM.
|
|
This function is called before the satck has been set up. Its implementation must ensure the stack
|
|
pointer is not used (probably required to use assembly language)
|
|
|
|
**/
|
|
ASM_PFX(ArmPlatformSecBootMemoryInit):
|
|
// The SMC does not need to be initialized for RTSM
|
|
bx lr
|