ArmPlatformPkg: Introduced 'ArmPlatformSecLib'

[mirror_edk2.git] / ArmPlatformPkg / ArmRealViewEbPkg / Library / ArmRealViewEbSecLibRTSM / ArmRealViewEbBoot.S

diff --git a/ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbSecLibRTSM/ArmRealViewEbBoot.S b/ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbSecLibRTSM/ArmRealViewEbBoot.S
new file mode 100644 (file)
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+++ b/ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbSecLibRTSM/ArmRealViewEbBoot.S
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+//\r
+//  Copyright (c) 2011-2012, ARM Limited. All rights reserved.\r
+//\r
+//  This program and the accompanying materials\r
+//  are licensed and made available under the terms and conditions of the BSD License\r
+//  which accompanies this distribution.  The full text of the license may be found at\r
+//  http://opensource.org/licenses/bsd-license.php\r
+//\r
+//  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+//  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+//\r
+//\r
+\r
+#include <AsmMacroIoLib.h>\r
+#include <Base.h>\r
+#include <Library/ArmPlatformSecLib.h>\r
+#include <ArmPlatform.h>\r
+#include <AutoGen.h>\r
+\r
+.text\r
+.align 3\r
+\r
+GCC_ASM_EXPORT(ArmPlatformSecBootAction)\r
+GCC_ASM_EXPORT(ArmPlatformSecBootMemoryInit)\r
+\r
+/**\r
+  Call at the beginning of the platform boot up\r
+\r
+  This function allows the firmware platform to do extra actions at the early\r
+  stage of the platform power up.\r
+\r
+  Note: This function must be implemented in assembler as there is no stack set up yet\r
+\r
+**/\r
+ASM_PFX(ArmPlatformSecBootAction):\r
+  LoadConstantToReg (ARM_EB_SYS_FLAGS_NV_REG, r0)\r
+  ldr   r0, [r0]\r
+  cmp   r0, #0\r
+  bxeq  lr\r
+  bxne  r0\r
+\r
+/**\r
+  Initialize the memory where the initial stacks will reside\r
+\r
+  This memory can contain the initial stacks (Secure and Secure Monitor stacks).\r
+  In some platform, this region is already initialized and the implementation of this function can\r
+  do nothing. This memory can also represent the Secure RAM.\r
+  This function is called before the satck has been set up. Its implementation must ensure the stack\r
+  pointer is not used (probably required to use assembly language)\r
+\r
+**/\r
+ASM_PFX(ArmPlatformSecBootMemoryInit):\r
+  // The SMC does not need to be initialized for RTSM\r
+  bx    lr\r