1 /*++
2 
3 Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
4 
5 
6   This program and the accompanying materials are licensed and made available under
7 
8   the terms and conditions of the BSD License that accompanies this distribution.
9 
10   The full text of the license may be found at
11 
12   http://opensource.org/licenses/bsd-license.php.
13 
14 
15 
16   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
17 
18   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 
20 
21 
22 
23 
24 Module Name:
25 
26   CmosTable.h
27 
28 Abstract:
29 
30 --*/
31 
32 #include <Base.h>
33 #include <Library/IoLib.h>
34 #include <Library/PlatformCmosLib.h>
35 #include "CmosMap.h"
36 #include <PchAccess.h>
37 #include "PlatformBaseAddresses.h"
38 
39 #define DEFAULT_VALUE          0
40 #define  DEFAULT_ATTRIBUTES     0
41 #define  EXCLUDE_FROM_CHECKSUM   CMOS_ATTRIBUTE_EXCLUDE_FROM_CHECKSUM
42 
43 #define CMOS_DEBUG_PRINT_LEVEL_DEFAULT_VALUE      0x46   // EFI_D_WARN|EFI_D_INFO|EFI_D_LOAD
44 #define CMOS_DEBUG_PRINT_LEVEL_3_DEFAULT_VALUE    0x80   // EFI_D_ERROR
45 
46 //
47 // Add the CMOS entry below
48 //
49 CMOS_ENTRY mCmosTable[] = {
50 { CPU_HT_POLICY, CPU_HT_POLICY_ENABLED, EXCLUDE_FROM_CHECKSUM },
51 { TPM_POLICY, TPM_POLICY_ENABLED, DEFAULT_ATTRIBUTES },
52 { CMOS_LCDPANELTYPE_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
53 { CMOS_LCDPANELSCALING_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
54 { CMOS_IGDBOOTTYPE_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
55 { CMOS_BACKLIGHT_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
56 { CMOS_LFP_PANEL_COLOR_DEPTH_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
57 { CMOS_EDP_ACTIVE_LFP_CONFIG_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
58 { CMOS_PRIMARY_DISPLAY_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
59 { CMOS_IGD_DISPLAY_PIPE_B_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
60 { CMOS_SDVOPANELTYPE_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
61 { CMOS_PLATFORM_RESET_OS, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
62 { CMOS_CPU_BSP_SELECT, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
63 { CMOS_CPU_RATIO_OFFSET, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
64 { CMOS_ICH_PORT80_OFFSET, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
65 { CMOS_MAXRATIO_CONFIG_REG, DEFAULT_VALUE, DEFAULT_ATTRIBUTES },
66 { RTC_ADDRESS_CENTURY, RTC_ADDRESS_CENTURY_DEFAULT, CMOS_ATTRIBUTE_EXCLUDE_FROM_CHECKSUM },
67 { CMOS_POST_CODE_BREAK_REG, DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
68 { CMOS_POST_CODE_BREAK_1_REG, DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
69 { CMOS_POST_CODE_BREAK_2_REG, DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
70 { CMOS_POST_CODE_BREAK_3_REG, DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
71 { CMOS_DEBUG_PRINT_LEVEL_REG, CMOS_DEBUG_PRINT_LEVEL_DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
72 { CMOS_DEBUG_PRINT_LEVEL_1_REG, DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
73 { CMOS_DEBUG_PRINT_LEVEL_2_REG, DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
74 { CMOS_DEBUG_PRINT_LEVEL_3_REG, CMOS_DEBUG_PRINT_LEVEL_3_DEFAULT_VALUE, EXCLUDE_FROM_CHECKSUM },
75 };
76 
77 /**
78   Funtion to return platform CMOS entry.
GetPlatformCmosEntry(OUT CMOS_ENTRY ** CmosEntry,OUT UINTN * CmosEntryCount)79 
80   @param [out]  CmosEntry  Platform CMOS entry.
81 
82   @param [out]  CmosEntryCount Number of platform CMOS entry.
83 
84   @return Status.
85 **/
86 RETURN_STATUS
87 EFIAPI
88 GetPlatformCmosEntry (
89   OUT CMOS_ENTRY  **CmosEntry,
90   OUT UINTN       *CmosEntryCount
91   )
92 {
93   *CmosEntry = mCmosTable;
94   *CmosEntryCount = sizeof(mCmosTable)/sizeof(mCmosTable[0]);
95   return RETURN_SUCCESS;
96 }
CheckCmosBatteryStatus(VOID)97 
98 /**
99   Function to check if Battery lost or CMOS cleared.
100 
101   @reval TRUE  Battery is always present.
102   @reval FALSE CMOS is cleared.
103 **/
104 BOOLEAN
105 EFIAPI
106 CheckCmosBatteryStatus (
107   VOID
108   )
109 {
110   //
111   // Check if the CMOS battery is present
112   // Checks RTC_PWR_STS bit in the GEN_PMCON_1 register
113   //
114 
115   if ((MmioRead8 (PMC_BASE_ADDRESS + R_PCH_PMC_GEN_PMCON_1) & B_PCH_PMC_GEN_PMCON_RTC_PWR_STS) == 0) {
116     return TRUE;
117   } else {
118     return FALSE;
119   }
120 }
121