Update README.md

[Ventoy.git] / EDK2 / edk2_mod / edk2-edk2-stable201911 / MdeModulePkg / Application / Ventoy / Ventoy.c

diff --git a/EDK2/edk2_mod/edk2-edk2-stable201911/MdeModulePkg/Application/Ventoy/Ventoy.c b/EDK2/edk2_mod/edk2-edk2-stable201911/MdeModulePkg/Application/Ventoy/Ventoy.c
index c560bcbc81d945f1f8bdda458255b0b3c48198e4..3b7cf24475b5a1d59c15614ab5b25170dd579cf6 100644 (file)
--- a/EDK2/edk2_mod/edk2-edk2-stable201911/MdeModulePkg/Application/Ventoy/Ventoy.c
+++ b/EDK2/edk2_mod/edk2-edk2-stable201911/MdeModulePkg/Application/Ventoy/Ventoy.c
@@ -34,14 +34,17 @@
 #include <Protocol/BlockIo.h>
 #include <Protocol/RamDisk.h>
 #include <Protocol/SimpleFileSystem.h>
+#include <Protocol/DriverBinding.h>
 #include <Ventoy.h>
 
 BOOLEAN gDebugPrint = FALSE;
+BOOLEAN gBootFallBack = FALSE;
 BOOLEAN gDotEfiBoot = FALSE;
 BOOLEAN gLoadIsoEfi = FALSE;
 BOOLEAN gIsoUdf = FALSE;
 ventoy_ram_disk g_ramdisk_param;
 ventoy_chain_head *g_chain;
+void *g_vtoy_img_location_buf;
 ventoy_img_chunk *g_chunk;
 UINT8 *g_os_param_reserved;
 UINT32 g_img_chunk_num;
@@ -269,6 +272,7 @@ static int ventoy_update_image_location(ventoy_os_param *param)
     }
 
     address = (UINTN)buffer;
+    g_vtoy_img_location_buf = buffer;
 
     if (address % 4096)
     {
@@ -359,10 +363,22 @@ EFI_HANDLE EFIAPI ventoy_get_parent_handle(IN EFI_DEVICE_PATH_PROTOCOL *pDevPath
     return Handle;
 }
 
+STATIC ventoy_ram_disk g_backup_ramdisk_param;
+STATIC ventoy_os_param g_backup_os_param_var;
+
+
 EFI_STATUS EFIAPI ventoy_save_ramdisk_param(VOID)
 {
+    UINTN DataSize;
     EFI_STATUS Status = EFI_SUCCESS;
     EFI_GUID VarGuid = VENTOY_GUID;
+
+    DataSize = sizeof(g_backup_ramdisk_param);
+    Status = gRT->GetVariable(L"VentoyRamDisk", &VarGuid, NULL, &DataSize, &g_backup_ramdisk_param);
+    if (!EFI_ERROR(Status))
+    {
+        debug("find previous ramdisk variable <%llu>", g_backup_ramdisk_param.DiskSize);
+    }
     
     Status = gRT->SetVariable(L"VentoyRamDisk", &VarGuid, 
                   EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
@@ -376,21 +392,38 @@ EFI_STATUS EFIAPI ventoy_delete_ramdisk_param(VOID)
 {
     EFI_STATUS Status = EFI_SUCCESS;
     EFI_GUID VarGuid = VENTOY_GUID;
-    
-    Status = gRT->SetVariable(L"VentoyRamDisk", &VarGuid, 
+
+    if (g_backup_ramdisk_param.DiskSize > 0 && g_backup_ramdisk_param.PhyAddr > 0)
+    {
+        Status = gRT->SetVariable(L"VentoyRamDisk", &VarGuid, 
+                  EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+                  sizeof(g_backup_ramdisk_param), &g_backup_ramdisk_param);
+        debug("resotre ramdisk variable %r", Status);
+    }
+    else
+    {
+        Status = gRT->SetVariable(L"VentoyRamDisk", &VarGuid, 
                   EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                   0, NULL);
-    debug("delete efi variable %r", Status);
+        debug("delete ramdisk variable %r", Status);
+    }
 
     return Status;
 }
 
-
 EFI_STATUS EFIAPI ventoy_save_variable(VOID)
 {
+    UINTN DataSize;
     EFI_STATUS Status = EFI_SUCCESS;
     EFI_GUID VarGuid = VENTOY_GUID;
-    
+
+    DataSize = sizeof(g_backup_os_param_var);
+    Status = gRT->GetVariable(L"VentoyOsParam", &VarGuid, NULL, &DataSize, &g_backup_os_param_var);
+    if (!EFI_ERROR(Status))
+    {
+        debug("find previous efi variable <%a>", g_backup_os_param_var.vtoy_img_path);
+    }
+
     Status = gRT->SetVariable(L"VentoyOsParam", &VarGuid, 
                   EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                   sizeof(g_chain->os_param), &(g_chain->os_param));
@@ -403,11 +436,21 @@ EFI_STATUS EFIAPI ventoy_delete_variable(VOID)
 {
     EFI_STATUS Status = EFI_SUCCESS;
     EFI_GUID VarGuid = VENTOY_GUID;
-    
-    Status = gRT->SetVariable(L"VentoyOsParam", &VarGuid, 
+
+    if (0 == CompareMem(&(g_backup_os_param_var.guid), &VarGuid, sizeof(EFI_GUID)))
+    {
+        Status = gRT->SetVariable(L"VentoyOsParam", &VarGuid, 
+                  EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+                  sizeof(g_backup_os_param_var), &(g_backup_os_param_var));
+        debug("restore efi variable %r", Status);
+    }
+    else
+    {
+        Status = gRT->SetVariable(L"VentoyOsParam", &VarGuid, 
                   EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                   0, NULL);
-    debug("delete efi variable %r", Status);
+        debug("delete efi variable %r", Status);
+    }
 
     return Status;
 }
@@ -694,6 +737,11 @@ STATIC EFI_STATUS EFIAPI ventoy_parse_cmdline(IN EFI_HANDLE ImageHandle)
         gDebugPrint = TRUE;
     }
     
+    if (StrStr(pCmdLine, L"fallback"))
+    {
+        gBootFallBack = TRUE;
+    }
+    
     if (StrStr(pCmdLine, L"dotefi"))
     {
         gDotEfiBoot = TRUE;
@@ -873,12 +921,15 @@ EFI_STATUS EFIAPI ventoy_clean_env(VOID)
 
     ventoy_delete_variable();
 
-    if (g_chain->os_param.vtoy_img_location_addr)
+    if (g_vtoy_img_location_buf)
     {
-        FreePool((VOID *)(UINTN)g_chain->os_param.vtoy_img_location_addr);
+        FreePool(g_vtoy_img_location_buf);
     }
 
-    FreePool(g_chain);
+    if (!gMemdiskMode)
+    {
+        FreePool(g_chain);        
+    }
 
     return EFI_SUCCESS;
 }
@@ -1030,7 +1081,7 @@ EFI_STATUS EFIAPI ventoy_boot(IN EFI_HANDLE ImageHandle)
             }
         
             debug("Fs not found, now wait and retry...");
-            sleep(2);
+            sleep(1);
         }
     }
 
@@ -1074,6 +1125,8 @@ EFI_STATUS EFIAPI VentoyEfiMain
         return Status;
     }
 
+    ventoy_disable_ex_filesystem();
+
     if (gMemdiskMode)
     {
         g_ramdisk_param.PhyAddr = (UINT64)(UINTN)g_iso_data_buf;
@@ -1130,7 +1183,7 @@ EFI_STATUS EFIAPI VentoyEfiMain
         ventoy_clean_env();
     }
 
-    if (FALSE == gDotEfiBoot)
+    if (FALSE == gDotEfiBoot && FALSE == gBootFallBack)
     {
         if (EFI_NOT_FOUND == Status)
         {
@@ -1148,6 +1201,8 @@ EFI_STATUS EFIAPI VentoyEfiMain
         grub_env_set("vtoy_dotefi_retry", "YES");            
     }
 
+    ventoy_enable_ex_filesystem();
+
     return EFI_SUCCESS;
 }