PPI编程

  1 #include <Uefi.h>
  2 #include <Library/DebugLib.h>
  3 #include <Library/PcdLib.h>
  4 #include <Library/PeiServicesLib.h>
  5 #include <Pi/PiPeiCis.h>
  6 #include <Pi/PiHob.h>
  7 #include <Token.h>
  8 #include <Ppi/ReadOnlyVariable2.h>
  9 #include <Ppi/MyFirstPeiLib.h>
 10 #include <Setup.h>
 11 #include <Library/homeworkppi.h>
 12 #include <Library/PeimEntryPoint.h>
 13 #include <Library/BaseLib.h>
 14 #include <Guid/homeworkitem.h>
 15 #include <Uefi/UefiBaseType.h>
 16 
 17 
 18 
 19 
 20 
 21 
 22 
 23 #define BscDefinedValue (10)//()表示赋值[]表示数组大小
 24 
 25 EFI_GUID gHwPpiGuid = {0x37241739, 0x260e, 0x47ef, {0xbd, 0xa8, 0x6b, 0x9c, 0x90, 0xd0, 0xad, 0x1e}};
 26 //                    {0x5908a557,0x27f6,0x4ce6,{0x9d,0x06,0x10,0x04,0x76,0x1f,0x5b,0x67}}
 27 EFI_STATUS HwPpiInterfaceInc (UINT8* TempValue)
 28 {
 29     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
 30     BSC_DEBUG (DEBUG_INFO, "[homework]TempValue: %d\r\n", *TempValue);//这些是输出
 31     (*TempValue)++;//要传递指针的 因为return只会是EFI_STATUS
 32     BSC_DEBUG (DEBUG_INFO, "[homework]TempValue: %d\r\n", *TempValue);
 33     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
 34     
 35     return EFI_SUCCESS;
 36 }
 37 
 38 static HwPpi_s HwPpi = {
 39     BscDefinedValue,
 40     HwPpiInterfaceInc
 41 };//新建的PPI 
 42 
 43 static EFI_PEI_PPI_DESCRIPTOR HwPpiList = {
 44     (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
 45     &gHwPpiGuid,//GUID类型
 46     &HwPpi
 47 };
 48 
 49 VOID HomeWorkPpiInstall (VOID)
 50 {
 51     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
 52     PeiServicesInstallPpi (&HwPpiList);
 53     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
 54 }
 55 
 56 VOID HomeWorkPpiLocate (VOID)
 57 {
 58     EFI_STATUS Status = EFI_SUCCESS;
 59     HwPpi_s *pHwPpi = NULL;//指针形式
 60     UINT8 Data = 0;
 61     
 62     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
 63     Status = PeiServicesLocatePpi (
 64         &gHwPpiGuid, 0, NULL, (VOID **) &pHwPpi
 65     );
 66     if (EFI_ERROR(Status)) {
 67         BSC_DEBUG (DEBUG_INFO, "[homework]Locate pHwPpi Fail..%r\r\n", Status);
 68     }
 69     else
 70     {
 71         Data = pHwPpi->Value;
 72         pHwPpi->Interface (&Data);
 73         BSC_DEBUG (DEBUG_INFO, "[homework]PCD Value: %d\r\n", PcdGet8 (PcdBscDefinedValue));
 74         PcdSet8 (PcdBscDefinedValue, Data);
 75         BSC_DEBUG (DEBUG_INFO, "[homework]Set PCD Value\r\n");
 76         BSC_DEBUG (DEBUG_INFO, "[homework]PCD Value: %d\r\n", PcdGet8 (PcdBscDefinedValue));
 77     }
 78     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
 79 }
 80 
 81 static VOID PrintGuid2(UINT8 *pGuid)
 82 {
 83     EFI_GUID *RomGuid = (EFI_GUID*) pGuid;
 84 
 85     if (RomGuid == NULL) return;
 86 
 87     BSC_DEBUG (DEBUG_INFO, "%08lx-%04x-%04x-%02x%02x%02x%02x%02x%02x%02x%02x\n",
 88                             RomGuid->Data1,
 89                             RomGuid->Data2,RomGuid->Data3,
 90                             RomGuid->Data4[0],RomGuid->Data4[1],RomGuid->Data4[2],RomGuid->Data4[3],
 91                             RomGuid->Data4[4],RomGuid->Data4[5],RomGuid->Data4[6],RomGuid->Data4[7]
 92     );
 93 }
 94 
 95 VOID HomeWorkVariableHob (VOID)
 96 {
 97     EFI_STATUS                        Status = EFI_SUCCESS;
 98     EFI_GUID                        gBscHwItemGuid = HOMEWORKITEM_GUID;
 99     HomeworkHob_s                    *homeworkhob = NULL;
100     EFI_GUID                        homeworkHobGuid = HOMEWORK_HOB_GUID;
101     EFI_PEI_READ_ONLY_VARIABLE2_PPI    *VariablePpi = NULL;
102     UINTN                            Size = 0;
103     UINT32                            VariableAttr = 0;
104     HwItem_s                        HwItemData = {0};
105     
106     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
107     Size = sizeof (HwItem_s);
108     Status = PeiServicesLocatePpi (
109         &gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **)&VariablePpi
110     );
111     if (EFI_ERROR(Status)) {
112         BSC_DEBUG (DEBUG_INFO, "[homework]Locate VariablePpi Fail..%r\r\n", Status);
113     }
114     else
115     {
116         Status = VariablePpi->GetVariable ( 
117             VariablePpi, 
118             L"homeworkitemvar",
119             &gBscHwItemGuid,
120             &VariableAttr,
121             &Size,
122             &HwItemData
123         );
124         if (EFI_ERROR(Status)) {
125             BSC_DEBUG (DEBUG_INFO, "[homework]GetVariable HwItemData Fail..%r\r\n", Status);
126         }
127         else
128         {
129             PrintGuid2((UINT8*)(&gBscHwItemGuid));
130             BSC_DEBUG (DEBUG_INFO, "[homework]HwItemData->HomeworkItemData Value: %d\r\n", HwItemData.HomeworkItemData);
131         }
132         
133         Status = PeiServicesCreateHob (//创建HOB
134            EFI_HOB_TYPE_GUID_EXTENSION,
135            sizeof(HomeworkHob_s),
136            &homeworkhob
137         );
138         if (EFI_ERROR(Status)) {
139             BSC_DEBUG (DEBUG_INFO, "[homework]CreateHob homeworkhob Fail..%r\r\n", Status);    
140         }
141         else {
142             homeworkhob->HwHobGuidType.Name = homeworkHobGuid;
143             homeworkhob->homeworkdata = HwItemData.HomeworkItemData; 
144             BSC_DEBUG (DEBUG_INFO, "[homework]homeworkhob->homeworkdata Value: %d\r\n", homeworkhob->homeworkdata);
145         }
146     }
147     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
148 }

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D:\self\第二周\代码作业\homeworkppi.c

homeworkppi.h

 1 #ifndef _HOMEWORKPPI_H_
 2 #define _HOMEWORKPPI_H_
 3 
 4 #define HOMEWORK_HOB_GUID \
 5 {0x60d01e51, 0xe37e, 0x4543, 0xb9, 0xb1, 0x88, 0xda, 0xc9, 0xaf, 0x5, 0xfb}
 6 
 7 typedef EFI_STATUS (*INC_INTERFACE) (UINT8* TempValue);
 8 typedef struct tagHwPpi  {
 9     UINT8             Value;
10     INC_INTERFACE   Interface;
11 }HwPpi_s;
12 
13 typedef struct tagHomeworkHob{
14     EFI_HOB_GUID_TYPE        HwHobGuidType; 
15     UINT8                    homeworkdata;  
16 } HomeworkHob_s;
17 
18 VOID HomeWorkPpiInstall (VOID);
19 VOID HomeWorkPpiLocate (VOID);
20 VOID HomeWorkVariableHob (VOID);
21 
22 #endif

View Code

homeworkdxehob.c

  1 #include <Guid/HobList.h>
  2 #include <AmiDxeLib.h>
  3 #include <Library/homeworkppi.h>
  4 #include <Pi/PiHob.h>
  5 #include <AmiLib.h>
  6 #include <Library/PcdLib.h>
  7 #include <Library/UefiBootServicesTableLib.h>
  8 #include <IndustryStandard/SmBios.h>
  9 #include <Library/MemoryAllocationLib.h>
 10 #include <Protocol/Smbios.h>
 11 #include <SmbiosDynamicUpdateDxe.h>
 12 
 13 static UINT8 SmbiosData = 0;
 14 
 15 VOID HomeWorkGetHob (IN EFI_SYSTEM_TABLE *SystemTable)
 16 {
 17     EFI_STATUS        Status = EFI_SUCCESS;
 18     EFI_GUID        GuidHob = HOB_LIST_GUID;    
 19     EFI_GUID        HomeworkHobGuid = HOMEWORK_HOB_GUID;
 20     HomeworkHob_s    *Homeworkhob = NULL;
 21     VOID            *pHobList = NULL;
 22     
 23     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
 24     pHobList = GetEfiConfigurationTable (SystemTable, &GuidHob);
 25     if (!pHobList) {
 26         BSC_DEBUG (DEBUG_INFO, "[homework]pHobList get Fail..%r\r\n");
 27     }
 28     
 29     Homeworkhob = (HomeworkHob_s *) pHobList;
 30     while (!EFI_ERROR(Status = FindNextHobByType (EFI_HOB_TYPE_GUID_EXTENSION, &Homeworkhob)))
 31     {
 32         if (guidcmp (&(*Homeworkhob).HwHobGuidType.Name, &HomeworkHobGuid) == 0)
 33             break;
 34     }
 35     if (EFI_ERROR(Status)) 
 36     {
 37         BSC_DEBUG (DEBUG_INFO, "[homework]Homeworkhob found Fail..%r\r\n");
 38     }else{
 39         BSC_DEBUG (DEBUG_INFO, "[homework]Homeworkhob->homeworkdata value: %d\r\n", Homeworkhob->homeworkdata);
 40         SmbiosData = PcdGet8 (PcdBscDefinedValue) + Homeworkhob->homeworkdata;
 41         BSC_DEBUG (DEBUG_INFO, "[homework]PcdBscDefinedValue value: %d\r\n", PcdGet8 (PcdBscDefinedValue));
 42         BSC_DEBUG (DEBUG_INFO, "[homework]33 SmbiosData value: %d\r\n", SmbiosData);
 43     }
 44     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
 45 }
 46 
 47 static VOID HomeWorkUpdateSmbiosType0
 48 (
 49   IN EFI_EVENT    Event,
 50   IN VOID        *Cotext
 51 )
 52 {
 53     EFI_STATUS                            Status = EFI_SUCCESS;
 54     EFI_SMBIOS_PROTOCOL                    *SmbiosProtocol;
 55     SMBIOS_TABLE_TYPE0                   *Type0   = NULL;
 56     EFI_SMBIOS_TYPE                        SmbiosType;
 57     EFI_SMBIOS_HANDLE                    SmbiosHandle;
 58     EFI_SMBIOS_TABLE_HEADER                *SmbiosRecord  = NULL;
 59     UINT8                                EntryNum = 0;
 60     UINT8                                Index = 0;
 61     UINT8                                *MemoryIndex = NULL;
 62     UINTN                               SmbiosType0Size;
 63     SMBIOS_TABLE_TYPE0_WITH_STRING        TempType0Data;
 64     CHAR16                                *HwBiosVersionStr = NULL;
 65     UINTN                                 StringBufferSize = 0;
 66     CHAR8                               *AsciiStringBuffer = NULL;
 67     
 68     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
 69     Status = gBS->LocateProtocol (
 70         &gEfiSmbiosProtocolGuid,
 71         NULL,
 72         (VOID **) &SmbiosProtocol
 73     );
 74     if (EFI_ERROR(Status)) {
 75         BSC_DEBUG (DEBUG_INFO, "[homework]LocateProtocol SmbiosProtocol Fail..%r\r\n", Status);
 76     }
 77     else {
 78         SmbiosType = EFI_SMBIOS_TYPE_BIOS_INFORMATION;
 79         SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
 80     
 81         while (!(Status == EFI_NOT_FOUND && SmbiosHandle == SMBIOS_HANDLE_PI_RESERVED)) {
 82             Status = SmbiosProtocol->GetNext (SmbiosProtocol, &SmbiosHandle, &SmbiosType, &SmbiosRecord, NULL);
 83             if (!EFI_ERROR(Status)) {
 84                 EntryNum++;
 85             }
 86         }
 87         BSC_DEBUG (DEBUG_INFO, "[homework]Type0 Recored Number: %d\r\n", EntryNum);
 88     
 89         for (Index = 0; Index < EntryNum; Index++)
 90         {
 91             SmbiosType = EFI_SMBIOS_TYPE_BIOS_INFORMATION; 
 92             SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
 93             
 94             Status = SmbiosProtocol->GetNext (SmbiosProtocol, &SmbiosHandle, &SmbiosType, &SmbiosRecord, NULL);
 95             if (EFI_ERROR(Status)) {
 96                 BSC_DEBUG (DEBUG_INFO, "[homework]SmbiosProtocol GetNext Fail..%r\r\n", Status);
 97             }
 98 
 99             Type0 = (SMBIOS_TABLE_TYPE0*) SmbiosRecord;
100 
101             MemoryIndex = (UINT8*)(VOID*) Type0;
102             SmbiosType0Size = sizeof(SMBIOS_TABLE_TYPE0) + CalculateTheStringsSizeOfTheType ((MemoryIndex + sizeof(SMBIOS_TABLE_TYPE0))) - 1;
103         
104             gBS->SetMem (&TempType0Data, sizeof(TempType0Data), 0);
105             gBS->CopyMem (&TempType0Data, Type0, SmbiosType0Size);
106             Type0 = (SMBIOS_TABLE_TYPE0*)&TempType0Data;
107 
108             StringBufferSize = (sizeof (CHAR8)) * SMBIOS_STRING_MAX_LENGTH;
109             AsciiStringBuffer = AllocateZeroPool(StringBufferSize);
110             BSC_DEBUG (DEBUG_INFO, "[homework]33 SmbiosData value: %d\r\n", SmbiosData);
111             BSC_DEBUG (DEBUG_INFO, "[homework]Itoa AsciiStringBuffer: %s\r\n", Itoa (SmbiosData, AsciiStringBuffer, 10));
112             BSC_DEBUG (DEBUG_INFO, "[homework]AsciiStringBuffer: %s\r\n", AsciiStringBuffer); 
113             
114             Status = SmbiosProtocol->UpdateString (
115                 SmbiosProtocol,
116                 &SmbiosHandle,
117                 (UINTN*)&(Type0-> BiosVersion),
118                 AsciiStringBuffer
119             );
120             gBS->FreePool (AsciiStringBuffer);
121         }
122     }
123     gBS->CloseEvent (Event);
124     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
125 }
126 
127 VOID DynamicUpdateSmbiosType0(VOID)
128 {
129     EFI_STATUS          Status = EFI_SUCCESS;
130     VOID                *Registration = NULL;
131     EFI_EVENT           Event = NULL;
132 
133     BSC_DEBUG (DEBUG_INFO, "[homework]%a: In!!!\r\n", __func__);
134     Status = gBS->CreateEvent (EVT_NOTIFY_SIGNAL, TPL_CALLBACK, &HomeWorkUpdateSmbiosType0, 0, &Event);
135     if (!EFI_ERROR(Status)) {
136         (VOID)gBS->RegisterProtocolNotify (&gBdsAllDriversConnectedProtocolGuid, Event, &Registration);
137     }
138     BSC_DEBUG (DEBUG_INFO, "[homework]%a: Exit!!!\r\n", __func__);
139 }

View Code

  1 #include <Uefi.h>
  2 #include <Library/DebugLib.h>
  3 #include <Library/PcdLib.h>
  4 #include <Library/PeiServicesLib.h>
  5 #include <Pi/PiPeiCis.h>
  6 #include <Pi/PiHob.h>
  7 #include <Token.h>
  8 #include <Ppi/ReadOnlyVariable2.h>
  9 #include <Ppi/MyFirstPeiLib.h>
 10 #include <Setup.h>
 11 #include <Library/homeworkppi.h>
 12 #include <Library/PeimEntryPoint.h>
 13 #include <Library/BaseLib.h>
 14 #include <Guid/homeworkitem.h>
 15 #include <Uefi/UefiBaseType.h>
 16 
 17 #define BscDefinedValue 5 //PPI的数值
 18 
 19 CONST EFI_GUID HPpiGuid = {0x5908a557,0x27f6,0x4ce6,{0x9d,0x06,0x10,0x04,0x76,0x1f,0x5b,0x67}}; //由在线GUID生成器生成的
 20 
 21 EFI_STATUS
 22 EFIAPI
 23 BscAddFunction (
 24   IN UINT* Value
 25   )
 26 {
 27   (*Value)++;
 28   return EFI_SUCCESS;
 29 }
 30 
 31 Static HwPpi_s HPpi = {//HwPpi_s
 32     BscDefinedValue,
 33     BscAddFunction
 34 };//自行定义一个PPI，里面包含一个数值BscDefinedValue和一个函数
 35 
 36 //自行定义PpiList
 37 CONST EFI_PEI_PPI_DESCRIPTOR HPpiList = {
 38     EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST, //标记描述特征
 39     &HPpiGuid, 
 40     &HPpi //定义里要求这俩都是指针 所以这里得是地址&
 41 };//要带;
 42 
 43 
 44 
 45 EFI_STATUS
 46 EFIAPI
 47 HPpiInstall (
 48   VOID
 49   )
 50 {
 51     EFI_STATUS                      Status;
 52     EFI_PEI_PPI_DESCRIPTOR          HPpiList2; //局部变量？
 53 
 54     Status = PeiServicesInstallPpi (&HPpiList2);//传PpiList的地址
 55     if(EFI_ERROR(Status)) {
 56         ASSERT_EFI_ERROR (Status);
 57         return Status;
 58     }
 59     return EFI_SUCCESS;
 60 }
 61 
 62 
 63 
 64 
 65 EFI_STATUS
 66 EFIAPI
 67 HPpiLocate (
 68   VOID
 69   )
 70 {
 71     EFI_STATUS                      Status;
 72     HwPpi_s                         HPpi2;
 73     UINT                            Data;
 74    
 75     DEBUG ((EFI_D_INFO, "Reset Required. \n"));
 76     Status = PeiServicesLocatePpi (
 77         &HPpiGuid,
 78         0,  //Instance
 79         NULL, //Descriptor
 80         (VOID **) &HPpi2); //IN OUT VOID   **Ppi 二级指针
 81         //就只是把响应的ppi能拿上干活了 并不是返回保存信息的数据state只是是否可以使用的状态
 82 
 83     if(EFI_ERROR (Status)) {
 84       BSC_DEBUG (DEBUG_INFO, "[homework]Locate pHwPpi Fail..%r\r\n", Status);
 85         DEBUG((DEBUG_ERROR | DEBUG_WARN, "Failed to register SwSmi 0x52\n"));
 86     } else{
 87 //通过BscAddFunction把BscDefinedValue传入获取结果
 88         Data = HPpi2.BscDefinedValue;
 89         Status = HPpi2.BscAddFunction(&Data);
 90         if(EFI_ERROR(Status)) {
 91             ASSERT_EFI_ERROR (Status);
 92             return Status;
 93         }
 94 //更新到自定义的数值类型PCD(PcdBscDefinedValue)内，并Debug Log打印该数值是否符合预期；
 95         BSC_DEBUG (DEBUG_INFO, "[homework]PCD Value: %d\r\n", PcdGet8 (PcdBscDefinedValue));
 96             PcdSet8 (PcdBscDefinedValue, Data);
 97             BSC_DEBUG (DEBUG_INFO, "[homework]Set PCD Value\r\n");
 98             BSC_DEBUG (DEBUG_INFO, "[homework]PCD Value: %d\r\n", PcdGet8 (PcdBscDefinedValue));
 99         //所以先 get再set再get
100     }
101 }
102 
103 
104 
105 EFI_STATUS
106 EFIAPI
107 HPpiLocate (
108   VOID
109   )
110 {
111     EFI_STATUS                      Status;
112     UINT                            Size = 0;
113     EFI_PEI_READ_ONLY_VARIABLE2_PPI    *VariablePpi = NULL; //设置开机启动项/开机密码等功能：使用Variable机制实现。
114     HwItem_s                        HwItemData = {0};//???
115 
116 
117     Status = PeiServicesLocatePpi (
118       &gEfiPeiReadOnlyVariable2PpiGuid, 
119       0, 
120       NULL, 
121       (VOID **) &VariablePpi);//貌似参数就是这个形式   
122     
123     Size = sizeof (HwItem_s);//???
124 
125     if (!EFI_ERROR (Status)){
126       Status = ReadOnlyVariable->GetVariable(
127                 &gEfiSetupVariableGuid,
128                 NULL,
129                 &VariableSize,
130                 &SetupData
131             );
132       if (!EFI_ERROR (Status)) {
133         BootMode = BOOT_ON_FLASH_UPDATE;
134         PeiServicesSetBootMode(BootMode);
135         DEBUG ((EFI_D_INFO, " Change boot mode to BOOT_ON_FLASH_UPDATE\n"));
136       }else{
137         DEBUG ((EFI_D_INFO, " No Capsule data found!\n"));
138         return Status;
139       }
140     }else {
141       DEBUG ((EFI_D_INFO, " Cannot locate CapsulePpi!\n"));
142       return Status;
143     }
144 
145 
146     
147    
148 
149     
150 
151    
152 
153 
154 
155 
156     DEBUG ((EFI_D_INFO, "Reset Required. \n"));
157     Status = 
158 
159     if(EFI_ERROR (Status)) {
160       BSC_DEBUG (DEBUG_INFO, "[homework]Locate pHwPpi Fail..%r\r\n", Status);
161       DEBUG((DEBUG_ERROR | DEBUG_WARN, "Failed to register SwSmi 0x52\n"));
162     } else{
163 
164     }
165 }

View Code

posted @ 2022-08-05 14:40 像走了一光年阅读(118) 评论(0) 编辑收藏举报

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