| // | |
| // 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 |