[NTVDM]: Load a BIOS image in case its name is given in BiosInitialize.

[reactos.git] / subsystems / ntvdm / bios / bios.c

diff --git a/subsystems/ntvdm/bios/bios.c b/subsystems/ntvdm/bios/bios.c
index b90a71f..5049815 100644 (file)
--- a/subsystems/ntvdm/bios/bios.c
+++ b/subsystems/ntvdm/bios/bios.c
@@ -10,6 +10,7 @@
 
 #define NDEBUG
 
+#include "emulator.h"
 #include "bios.h"
 
 /* PRIVATE VARIABLES **********************************************************/
@@ -24,8 +25,119 @@ BOOLEAN BiosInitialize(IN LPCWSTR BiosFileName,
                        IN HANDLE  ConsoleInput,
                        IN HANDLE  ConsoleOutput)
 {
-    Bios32Loaded = Bios32Initialize(ConsoleInput, ConsoleOutput);
-    return Bios32Loaded;
+    if (BiosFileName)
+    {
+        BOOL   Success;
+        HANDLE hBiosFile;
+        DWORD  BiosSize;
+
+        /* Open the BIOS file */
+        SetLastError(0); // For debugging purposes
+        hBiosFile = CreateFileW(BiosFileName,
+                                GENERIC_READ,
+                                FILE_SHARE_READ,
+                                NULL,
+                                OPEN_EXISTING,
+                                FILE_ATTRIBUTE_NORMAL,
+                                NULL);
+        DPRINT1("BIOS opening %s ; GetLastError() = %u\n", hBiosFile != INVALID_HANDLE_VALUE ? "succeeded" : "failed", GetLastError());
+
+        /* If we failed, bail out */
+        if (hBiosFile == INVALID_HANDLE_VALUE) return FALSE;
+
+        /* OK, we have a handle to the BIOS file */
+
+        /*
+         * Retrieve the size of the file. Since the size of the BIOS file
+         * should be at most 64kB, we just use GetFileSize.
+         */
+        BiosSize = GetFileSize(hBiosFile, NULL);
+        if (BiosSize == INVALID_FILE_SIZE && GetLastError() != ERROR_SUCCESS)
+        {
+            /* We failed, return failure */
+
+            /* Close the BIOS file */
+            CloseHandle(hBiosFile);
+
+            return FALSE;
+        }
+
+        DisplayMessage(L"First bytes at 0x%p: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n"
+                       L"3 last bytes at 0x%p: 0x%02x 0x%02x 0x%02x",
+            (PVOID)((ULONG_PTR)TO_LINEAR(0xF000, 0xFFFF) + 1 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 1 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 2 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 3 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 4 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 5 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 6 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 7 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 8 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 9 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 0xa - BiosSize),
+
+            (PVOID)((ULONG_PTR)TO_LINEAR(0xF000, 0xFFFF) - 2),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) - 2),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) - 1),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) - 0));
+
+        /* Attempt to load the BIOS file into memory */
+        SetLastError(0); // For debugging purposes
+        Success = ReadFile(hBiosFile,
+                           (PVOID)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 1 - BiosSize),
+                           /* (PVOID)((ULONG_PTR)BaseAddress + ROM_AREA_END + 1 - BiosSize) */
+                           BiosSize,
+                           &BiosSize,
+                           NULL);
+        DPRINT1("BIOS loading %s ; GetLastError() = %u\n", Success ? "succeeded" : "failed", GetLastError());
+
+        /* Close the BIOS file */
+        CloseHandle(hBiosFile);
+
+        DisplayMessage(L"First bytes at 0x%p: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n"
+                       L"3 last bytes at 0x%p: 0x%02x 0x%02x 0x%02x",
+            (PVOID)((ULONG_PTR)TO_LINEAR(0xF000, 0xFFFF) + 1 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 1 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 2 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 3 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 4 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 5 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 6 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 7 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 8 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 9 - BiosSize),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) + 0xa - BiosSize),
+
+            (PVOID)((ULONG_PTR)TO_LINEAR(0xF000, 0xFFFF) - 2),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) - 2),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) - 1),
+           *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(0xF000, 0xFFFF) - 0));
+
+        DisplayMessage(L"POST at 0x%p: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x",
+                       TO_LINEAR(getCS(), getIP()),
+                       *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(getCS(), getIP()) + 0),
+                       *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(getCS(), getIP()) + 1),
+                       *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(getCS(), getIP()) + 2),
+                       *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(getCS(), getIP()) + 3),
+                       *(PCHAR)((ULONG_PTR)SEG_OFF_TO_PTR(getCS(), getIP()) + 4));
+
+        /* Boot it up */
+
+        /*
+         * The CPU is already in reset-mode so that
+         * CS:IP points to F000:FFF0 as required.
+         */
+        DisplayMessage(L"CS=0x%p ; IP=0x%p", getCS(), getIP());
+        // setCS(0xF000);
+        // setIP(0xFFF0);
+
+        return TRUE;
+    }
+    else
+    {
+        Bios32Loaded = Bios32Initialize(ConsoleInput, ConsoleOutput);
+        return Bios32Loaded;
+    }
 }
 
 VOID BiosCleanup(VOID)