#include <reactos/buildno.h>
#include "emulator.h"
-#include "callback.h"
-#include "bop.h"
+#include "cpu/cpu.h" // for EMULATOR_FLAG_CF
+#include "cpu/bop.h"
+#include "int32.h"
#include "../bios.h"
#include "../rom.h"
*/
static BYTE PostCode[] =
{
- 0xCD, 0x19, // int 0x19, the bootstrap loader interrupt
+ LOBYTE(EMULATOR_BOP), HIBYTE(EMULATOR_BOP), BOP_RESET, // Call BIOS POST
+ 0xCD, 0x19, // INT 0x19, the bootstrap loader interrupt
// LOBYTE(EMULATOR_BOP), HIBYTE(EMULATOR_BOP), BOP_UNSIMULATE
};
return;
}
+
+VOID DosBootsectorInitialize(VOID);
+
static VOID WINAPI BiosBootstrapLoader(LPWORD Stack)
{
/*
- * In real bioses one loads the bootsector read from a diskette
- * or from a disk, to 0000:7C00 and then one runs it.
+ * In real BIOSes one loads the bootsector read from a diskette
+ * or from a disk, copy it to 0000:7C00 and then boot it.
* Since we are 32-bit VM and we hardcode our DOS at the moment,
* just call the DOS 32-bit initialization code.
*/
DPRINT1("BiosBootstrapLoader -->\n");
+ /* Load DOS */
+ DosBootsectorInitialize();
+ /* Position CPU to 0000:7C00 to boot the OS */
+ setCS(0x0000);
+ setIP(0x7C00);
+
DPRINT1("<-- BiosBootstrapLoader\n");
}
((PULONG)BaseAddress)[0x49] = (ULONG)NULL;
}
-static VOID InitializeBiosInfo(VOID)
-{
- RtlZeroMemory(Bct, sizeof(*Bct));
-
- Bct->Length = sizeof(*Bct);
- Bct->Model = BIOS_MODEL;
- Bct->SubModel = BIOS_SUBMODEL;
- Bct->Revision = BIOS_REVISION;
- Bct->Feature[0] = 0x70; // At the moment we don't support "wait for external event (INT 15/AH=41h)", we also don't have any "extended BIOS area allocated (usually at top of RAM)"; see http://www.ctyme.com/intr/rb-1594.htm#Table510
- Bct->Feature[1] = 0x00; // We don't support anything from here; see http://www.ctyme.com/intr/rb-1594.htm#Table511
- Bct->Feature[2] = 0x00;
- Bct->Feature[3] = 0x00;
- Bct->Feature[4] = 0x00;
-}
-
static VOID InitializeBiosData(VOID)
{
UCHAR Low, High;
- /* System BIOS Copyright */
- RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xE000), BiosCopyright, sizeof(BiosCopyright)-1);
-
- /* System BIOS Version */
- RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xE080), BiosVersion, sizeof(BiosVersion)-1); // FIXME: or E061, or E100 ??
-
- /* System BIOS Date */
- RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xFFF5), BiosDate, sizeof(BiosDate)-1);
-
- /* System BIOS Model (same as Bct->Model) */
- *(PBYTE)(SEG_OFF_TO_PTR(0xF000, 0xFFFE)) = BIOS_MODEL;
-
/* Initialize the BDA contents */
RtlZeroMemory(Bda, sizeof(*Bda));
Bda->EquipmentList = BIOS_EQUIPMENT_LIST;
Bda->MemorySize = MAKEWORD(Low, High);
}
-/* PUBLIC FUNCTIONS ***********************************************************/
+static VOID InitializeBiosInfo(VOID)
+{
+ RtlZeroMemory(Bct, sizeof(*Bct));
+
+ Bct->Length = sizeof(*Bct);
+ Bct->Model = BIOS_MODEL;
+ Bct->SubModel = BIOS_SUBMODEL;
+ Bct->Revision = BIOS_REVISION;
+ Bct->Feature[0] = 0x70; // At the moment we don't support "wait for external event (INT 15/AH=41h)", we also don't have any "extended BIOS area allocated (usually at top of RAM)"; see http://www.ctyme.com/intr/rb-1594.htm#Table510
+ Bct->Feature[1] = 0x00; // We don't support anything from here; see http://www.ctyme.com/intr/rb-1594.htm#Table511
+ Bct->Feature[2] = 0x00;
+ Bct->Feature[3] = 0x00;
+ Bct->Feature[4] = 0x00;
+}
+
+
/*
* The BIOS POST (Power On-Self Test)
*/
-BOOLEAN Bios32Initialize(VOID)
+VOID
+Bios32Post(VOID)
{
BOOLEAN Success;
+ DPRINT1("Bios32Post\n");
+
/* Initialize the stack */
// That's what says IBM... (stack at 30:00FF going downwards)
// setSS(0x0000);
/* Initialize the Keyboard, Video and Mouse BIOS */
if (!KbdBios32Initialize() || !VidBios32Initialize() || !MouseBios32Initialize())
- return FALSE;
+ {
+ // return FALSE;
+
+ /* Stop the VDM */
+ EmulatorTerminate();
+ return;
+ }
///////////// MUST BE DONE AFTER IVT INITIALIZATION !! /////////////////////
SearchAndInitRoms(&BiosContext);
+ /*
+ * End of the 32-bit POST portion. We then fall back into 16-bit where
+ * the rest of the POST code is executed, typically calling INT 19h
+ * to boot up the OS.
+ */
+}
+
+static VOID WINAPI Bios32ResetBop(LPWORD Stack)
+{
+ DPRINT1("Bios32ResetBop\n");
+
+ /* Disable interrupts */
+ setIF(0);
+
+ // FIXME: Check the word at 0040h:0072h (Bda->SoftReset) and do one of the
+ // following actions:
+ // - if the word is 1234h, perform a warm reboot (aka. Ctrl-Alt-Del);
+ // - if the word is 0000h, perform a cold reboot (aka. Reset).
+
+ /* Initialize IVT and hardware */
+
+ /* Initialize the Keyboard and Video BIOS */
+ if (!KbdBiosInitialize() || !VidBiosInitialize())
+ {
+ /* Stop the VDM */
+ EmulatorTerminate();
+ return;
+ }
+
+ /* Do the POST */
+ Bios32Post();
+
+ /* Enable interrupts */
+ setIF(1);
+}
+
+
+/* PUBLIC FUNCTIONS ***********************************************************/
+
+BOOLEAN Bios32Initialize(VOID)
+{
+ /*
+ * Initialize BIOS32 static data
+ */
+
/* Bootstrap code */
RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xE05B), PostCode , sizeof(PostCode ));
RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xFFF0), Bootstrap, sizeof(Bootstrap));
+ /* System BIOS Copyright */
+ RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xE000), BiosCopyright, sizeof(BiosCopyright)-1);
+
+ /* System BIOS Version */
+ RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xE080), BiosVersion, sizeof(BiosVersion)-1);
+ // FIXME: or E061, or E100 ??
+
+ /* System BIOS Date */
+ RtlCopyMemory(SEG_OFF_TO_PTR(0xF000, 0xFFF5), BiosDate, sizeof(BiosDate)-1);
+
+ /* System BIOS Model (same as Bct->Model) */
+ *(PBYTE)(SEG_OFF_TO_PTR(0xF000, 0xFFFE)) = BIOS_MODEL;
+
+ /* Redefine our POST function */
+ RegisterBop(BOP_RESET, Bios32ResetBop);
+
/* We are done */
return TRUE;
}
projects / reactos.git / blobdiff