1#
2#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.
3#
4#  This program and the accompanying materials
5#  are licensed and made available under the terms and conditions of the BSD License
6#  which accompanies this distribution.  The full text of the license may be found at
7#  http://opensource.org/licenses/bsd-license.php
8#
9#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11#
12#
13
14#include <AsmMacroIoLibV8.h>
15#include <Base.h>
16#include <Library/ArmLib.h>
17#include <Library/PcdLib.h>
18#include <AutoGen.h>
19
20.text
21.align 2
22
23GCC_ASM_EXPORT(ArmPlatformPeiBootAction)
24GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)
25GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)
26GCC_ASM_EXPORT(ArmPlatformGetCorePosition)
27GCC_ASM_EXPORT(ArmGetCpuCountPerCluster)
28
29GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore)
30GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask)
31GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdCoreCount)
32
33ASM_PFX(ArmPlatformPeiBootAction):
34  ret
35
36//UINTN
37//ArmPlatformGetPrimaryCoreMpId (
38//  VOID
39//  );
40ASM_PFX(ArmPlatformGetPrimaryCoreMpId):
41  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, x0)
42  ldrh   w0, [x0]
43  ret
44
45# IN None
46# OUT x0 = number of cores present in the system
47ASM_PFX(ArmGetCpuCountPerCluster):
48  LoadConstantToReg (_gPcd_FixedAtBuild_PcdCoreCount, x0)
49  ldrh  w0, [x0]
50  ret
51
52//UINTN
53//ArmPlatformIsPrimaryCore (
54//  IN UINTN MpId
55//  );
56ASM_PFX(ArmPlatformIsPrimaryCore):
57  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask, x1)
58  ldrh  w1, [x1]
59  and   x0, x0, x1
60  LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, x1)
61  ldrh  w1, [x1]
62  cmp   w0, w1
63  b.ne  1f
64  mov   x0, #1
65  ret
661:
67  mov   x0, #0
68  ret
69
70//UINTN
71//ArmPlatformGetCorePosition (
72//  IN UINTN MpId
73//  );
74// With this function: CorePos = (ClusterId * 4) + CoreId
75ASM_PFX(ArmPlatformGetCorePosition):
76  and   x1, x0, #ARM_CORE_MASK
77  and   x0, x0, #ARM_CLUSTER_MASK
78  add   x0, x1, x0, LSR #6
79  ret
80
81ASM_FUNCTION_REMOVE_IF_UNREFERENCED
82