1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
| //
| // Copyright (c) 2012-2013, ARM Limited. All rights reserved.
| //
| // SPDX-License-Identifier: BSD-2-Clause-Patent
| //
| //
|
| #include <AsmMacroIoLib.h>
| #include <Library/ArmLib.h>
|
| #include <ArmPlatform.h>
|
| ASM_FUNC(ArmPlatformPeiBootAction)
| bx lr
|
| //UINTN
| //ArmPlatformGetCorePosition (
| // IN UINTN MpId
| // );
| ASM_FUNC(ArmPlatformGetCorePosition)
| and r1, r0, #ARM_CORE_MASK
| and r0, r0, #ARM_CLUSTER_MASK
| add r0, r1, r0, LSR #7
| bx lr
|
| //UINTN
| //ArmPlatformIsPrimaryCore (
| // IN UINTN MpId
| // );
| ASM_FUNC(ArmPlatformIsPrimaryCore)
| // Extract cpu_id and cluster_id from ARM_SCC_CFGREG48
| // with cpu_id[0:3] and cluster_id[4:7]
| MOV32 (r1, ARM_CTA15A7_SCC_CFGREG48)
| ldr r1, [r1]
| lsr r1, #24
|
| // Shift the SCC value to get the cluster ID at the offset #8
| lsl r2, r1, #4
| and r2, r2, #0xF00
|
| // Keep only the cpu ID from the original SCC
| and r1, r1, #0x0F
| // Add the Cluster ID to the Cpu ID
| orr r1, r1, r2
|
| // Keep the Cluster ID and Core ID from the MPID
| MOV32 (r2, ARM_CLUSTER_MASK | ARM_CORE_MASK)
| and r0, r0, r2
|
| // Compare mpid and boot cpu from ARM_SCC_CFGREG48
| cmp r0, r1
| moveq r0, #1
| movne r0, #0
| bx lr
|
| //UINTN
| //ArmPlatformGetPrimaryCoreMpId (
| // VOID
| // );
| ASM_FUNC(ArmPlatformGetPrimaryCoreMpId)
| // Extract cpu_id and cluster_id from ARM_SCC_CFGREG48
| // with cpu_id[0:3] and cluster_id[4:7]
| MOV32 (r0, ARM_CTA15A7_SCC_CFGREG48)
| ldr r0, [r0]
| lsr r0, #24
|
| // Shift the SCC value to get the cluster ID at the offset #8
| lsl r1, r0, #4
| and r1, r1, #0xF00
|
| // Keep only the cpu ID from the original SCC
| and r0, r0, #0x0F
| // Add the Cluster ID to the Cpu ID
| orr r0, r0, r1
| bx lr
|
|
