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
|
/** @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.
*
**/
#include <Uefi.h>
#include <Library/IoLib.h>
#include <Library/ArmGicLib.h>
VOID
EFIAPI
ArmGicSendSgiTo (
IN INTN GicDistributorBase,
IN INTN TargetListFilter,
IN INTN CPUTargetList
)
{
MmioWrite32 (GicDistributorBase + ARM_GIC_ICDSGIR, ((TargetListFilter & 0x3) << 24) | ((CPUTargetList & 0xFF) << 16));
}
UINT32
EFIAPI
ArmGicAcknowledgeSgiFrom (
IN INTN GicInterruptInterfaceBase,
IN INTN CoreId
)
{
INTN InterruptId;
InterruptId = MmioRead32 (GicInterruptInterfaceBase + ARM_GIC_ICCIAR);
// Check if the Interrupt ID is valid, The read from Interrupt Ack register returns CPU ID and Interrupt ID
if (((CoreId & 0x7) << 10) == (InterruptId & 0x1C00)) {
// Got SGI number 0 hence signal End of Interrupt by writing to ICCEOIR
MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCEIOR, InterruptId);
return 1;
} else {
return 0;
}
}
UINT32
EFIAPI
ArmGicAcknowledgeSgi2From (
IN INTN GicInterruptInterfaceBase,
IN INTN CoreId,
IN INTN SgiId
)
{
INTN InterruptId;
InterruptId = MmioRead32(GicInterruptInterfaceBase + ARM_GIC_ICCIAR);
// Check if the Interrupt ID is valid, The read from Interrupt Ack register returns CPU ID and Interrupt ID
if((((CoreId & 0x7) << 10) | (SgiId & 0x3FF)) == (InterruptId & 0x1FFF)) {
// Got SGI number 0 hence signal End of Interrupt by writing to ICCEOIR
MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCEIOR, InterruptId);
return 1;
} else {
return 0;
}
}
|
