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3cbfba02 DW |
1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
4 | \r\r | |
9dc8036d MK |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
6 | \r | |
3cbfba02 DW |
7 | \r\r |
8 | \r | |
9 | Module Name:\r | |
10 | \r | |
11 | LegacyMetronome.h\r | |
12 | \r | |
13 | Abstract:\r | |
14 | \r | |
15 | Driver implementing the EFI 2.0 metronome protocol using the legacy PORT 61\r | |
16 | timer.\r | |
17 | \r | |
18 | --*/\r | |
19 | \r | |
20 | #ifndef _LEGACY_METRONOME_H\r | |
21 | #define _LEGACY_METRONOME_H\r | |
22 | \r | |
23 | //\r | |
24 | // Statements that include other files\r | |
25 | //\r | |
26 | #include "Protocol/Metronome.h"\r | |
27 | #include "Protocol/CpuIo.h"\r | |
28 | #include "Library/DebugLib.h"\r | |
29 | #include "Library/UefiBootServicesTableLib.h"\r | |
30 | \r | |
31 | \r | |
32 | //\r | |
33 | // Private definitions\r | |
34 | //\r | |
35 | #define TICK_PERIOD 300\r | |
36 | #define REFRESH_PORT 0x61\r | |
37 | #define REFRESH_ON 0x10\r | |
38 | #define REFRESH_OFF 0x00\r | |
39 | #define TIMER1_CONTROL_PORT 0x43\r | |
40 | #define TIMER1_COUNT_PORT 0x41\r | |
41 | #define LOAD_COUNTER1_LSB 0x54\r | |
42 | #define COUNTER1_COUNT 0x12\r | |
43 | \r | |
44 | //\r | |
45 | // Function Prototypes\r | |
46 | //\r | |
47 | /**\r | |
48 | Waits for the TickNumber of ticks from a known platform time source.\r | |
49 | \r | |
50 | @param This Pointer to the protocol instance.\r | |
51 | @param TickNumber Tick Number to be waited\r | |
52 | \r | |
53 | @retval EFI_SUCCESS If number of ticks occurred.\r | |
54 | @retval EFI_NOT_FOUND Could not locate CPU IO protocol\r | |
55 | \r | |
56 | **/\r | |
57 | EFI_STATUS\r | |
58 | EFIAPI\r | |
59 | WaitForTick (\r | |
60 | IN EFI_METRONOME_ARCH_PROTOCOL *This,\r | |
61 | IN UINT32 TickNumber\r | |
62 | );\r | |
63 | \r | |
64 | #endif\r |