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| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-22 23:11:03 +0000 |
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| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-22 23:11:03 +0000 |
| commit | 8fc38a3f50915b6b11b48f830f6c7b091dbb35d8 (patch) | |
| tree | 459a4a3c480686413b588183f04cc312a6bbd9d0 /ArmPlatformPkg/Include/Guid | |
| parent | 5b1928ffd6c03d171a06b89542d25ed01562c1eb (diff) | |
| download | edk2-8fc38a3f50915b6b11b48f830f6c7b091dbb35d8.tar.gz edk2-8fc38a3f50915b6b11b48f830f6c7b091dbb35d8.tar.bz2 edk2-8fc38a3f50915b6b11b48f830f6c7b091dbb35d8.zip | |
ArmPlatformPkg: Introduce ArmPlatformGlobalVariableLib
This library hides where the 'XIP' Global Variable are located in the memory.
It is expected the Sec/PrePi modules define the Global Variable area through
the GlobalVariable HOB.
The ArmPlatformGlobalVariableLib library allows access to global variables by
their offsets in this region.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12420 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/Include/Guid')
| -rw-r--r-- | ArmPlatformPkg/Include/Guid/ArmGlobalVariableHob.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/ArmPlatformPkg/Include/Guid/ArmGlobalVariableHob.h b/ArmPlatformPkg/Include/Guid/ArmGlobalVariableHob.h new file mode 100644 index 0000000000..7414b10050 --- /dev/null +++ b/ArmPlatformPkg/Include/Guid/ArmGlobalVariableHob.h @@ -0,0 +1,48 @@ +/** @file +* +* Copyright (c) 2011, 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. +* +**/ + +#ifndef __ARM_GLOBAL_VARIABLE_GUID_H__ +#define __ARM_GLOBAL_VARIABLE_GUID_H__ + +#define ARM_HOB_GLOBAL_VARIABLE_GUID \ + { 0xc3253c90, 0xa24f, 0x4599, { 0xa6, 0x64, 0x1f, 0x88, 0x13, 0x77, 0x8f, 0xc9} }; + +extern EFI_GUID gArmGlobalVariableGuid; + +/// +/// Describes all memory ranges used during the HOB producer +/// phase that exist outside the HOB list. This HOB type +/// describes how memory is used, not the physical attributes of memory. +/// +typedef struct { + /// + /// The Guid HOB header. Header.HobType = EFI_HOB_TYPE_GUID_EXTENSION + /// and Header.Name = gArmGlobalVariableGuid + /// + EFI_HOB_GUID_TYPE Header; + + /// + /// The base address of memory allocated by this HOB. Type + /// EFI_PHYSICAL_ADDRESS is defined in AllocatePages() in the UEFI 2.0 + /// specification. + /// + EFI_PHYSICAL_ADDRESS GlobalVariableBase; + + /// + /// The length in bytes of memory allocated by this HOB. + /// + UINT32 GlobalVariableSize; +} ARM_HOB_GLOBAL_VARIABLE; + +#endif |