ApfelTeeSaft/reactos
1
0
Fork 0
mirror of https://github.com/ApfelTeeSaft/reactos.git synced 2026-08-29 04:13:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NTVDM]

Browse Source 
- Initialize the BIOS Configuration Table, see http://www.ctyme.com/intr/rb-1594.htm for more information.
- Implement INT 15h, AH=C0h "GET CONFIGURATION".

svn path=/trunk/; revision=63367
This commit is contained in:
Hermès Bélusca-Maïto
2014-05-19 02:21:49 +00:00
parent de36490031
commit 02bef19b58
3 changed files with 78 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
reactos/subsystems/ntvdm/bios/bios.c
+5 -2
View File
@@ -37,6 +37,7 @@ static BOOLEAN Bios32Loaded = FALSE;
static CALLBACK16 __BiosContext;
PBIOS_DATA_AREA Bda;
PBIOS_CONFIG_TABLE Bct;
/* PRIVATE FUNCTIONS **********************************************************/
@@ -134,8 +135,10 @@ BiosInitialize(IN LPCSTR BiosFileName)
/* Disable interrupts */
setIF(0);
/* Initialize the BDA pointer */
Bda = (PBIOS_DATA_AREA)SEG_OFF_TO_PTR(BDA_SEGMENT, 0);
/* Initialize the BDA and the BCT pointers */
Bda = (PBIOS_DATA_AREA)SEG_OFF_TO_PTR(BDA_SEGMENT, 0x0000);
// The BCT is found at F000:E6F5 for 100% compatible BIOSes.
Bct = (PBIOS_CONFIG_TABLE)SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xE6F5);
/* Register the BIOS support BOPs */
RegisterBop(BOP_BIOSINIT , BiosInitBop);
reactos/subsystems/ntvdm/bios/bios.h
+21 -3
View File
@@ -22,6 +22,8 @@
#define BIOS_EQUIPMENT_LIST 0x2C // HACK: Disable FPU for now
#pragma pack(push, 1)
/*
* BIOS Data Area at 0040:XXXX
*
@@ -29,7 +31,6 @@
* and: http://www.bioscentral.com/misc/bda.htm
* for more information.
*/
#pragma pack(push, 1)
typedef struct
{
WORD SerialPorts[4]; // 0x00
@@ -96,13 +97,30 @@ typedef struct
BYTE Reserved17[15]; // 0x121
BYTE Reserved18[3]; // 0x130
} BIOS_DATA_AREA, *PBIOS_DATA_AREA;
#pragma pack(pop)
C_ASSERT(sizeof(BIOS_DATA_AREA) == 0x133);
/*
* BIOS Configuration Table at F000:E6F5 for 100% compatible BIOSes.
*
* See: http://www.ctyme.com/intr/rb-1594.htm
* for more information.
*/
typedef struct _BIOS_CONFIG_TABLE
{
WORD Length; // 0x00
BYTE Model; // 0x02
BYTE SubModel; // 0x03
BYTE BiosRevision; // 0x04
BYTE BiosFeature[5]; // 0x05 -- 0x09
// Other BIOSes may extend this table. We don't.
} BIOS_CONFIG_TABLE, *PBIOS_CONFIG_TABLE;
#pragma pack(pop)
/* FUNCTIONS ******************************************************************/
extern PBIOS_DATA_AREA Bda;
extern PBIOS_CONFIG_TABLE Bct;
VOID WINAPI BiosEquipmentService(LPWORD Stack);
VOID WINAPI BiosGetMemorySize(LPWORD Stack);
reactos/subsystems/ntvdm/bios/bios32/bios32.c
+52 -17
View File
@@ -112,6 +112,20 @@ static VOID WINAPI BiosMiscService(LPWORD Stack)
break;
}
/* Get Configuration */
case 0xC0:
{
/* Return the BIOS ROM Configuration Table address in ES:BX */
setES(HIWORD(Bct));
setBX(LOWORD(Bct));
/* Call successful; clear CF */
setAH(0x00);
Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
break;
}
default:
{
DPRINT1("BIOS Function INT 15h, AH = 0x%02X NOT IMPLEMENTED\n",
@@ -336,26 +350,23 @@ static VOID InitializeBiosInt32(VOID)
((PULONG)BaseAddress)[0x49] = (ULONG)NULL;
}
/* PUBLIC FUNCTIONS ***********************************************************/
/*
* The BIOS POST (Power On-Self Test)
*/
BOOLEAN Bios32Initialize(VOID)
static VOID InitializeBiosInfo(VOID)
{
Bct->Length = sizeof(*Bct);
Bct->Model = 0xFC; // PC-AT; see http://www.ctyme.com/intr/rb-1594.htm#Table515
Bct->SubModel = 0x00;
Bct->BiosRevision = 0x01;
Bct->BiosFeature[0] = 0x64; // At the moment we don't support "INT 15/AH=4Fh called upon INT 09h" nor "wait for external event (INT 15/AH=41h) supported"; see http://www.ctyme.com/intr/rb-1594.htm#Table510
Bct->BiosFeature[1] = 0x00; // We don't support anything from here; see http://www.ctyme.com/intr/rb-1594.htm#Table511
Bct->BiosFeature[2] = 0x00;
Bct->BiosFeature[3] = 0x00;
Bct->BiosFeature[4] = 0x00;
}
static VOID InitializeBiosData(VOID)
{
BOOLEAN Success;
UCHAR Low, High;
/* Initialize the stack */
// That's what says IBM... (stack at 30:00FF going downwards)
// setSS(0x0000);
// setSP(0x0400);
setSS(0x0050); // Stack at 50:0400, going downwards
setSP(0x0400);
/* Set data segment */
setDS(BDA_SEGMENT);
/* Initialize the BDA contents */
Bda->EquipmentList = BIOS_EQUIPMENT_LIST;
@@ -368,6 +379,30 @@ BOOLEAN Bios32Initialize(VOID)
IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_BASE_MEMORY_HIGH);
High = IOReadB(CMOS_DATA_PORT);
Bda->MemorySize = MAKEWORD(Low, High);
}
/* PUBLIC FUNCTIONS ***********************************************************/
/*
* The BIOS POST (Power On-Self Test)
*/
BOOLEAN Bios32Initialize(VOID)
{
BOOLEAN Success;
/* Initialize the stack */
// That's what says IBM... (stack at 30:00FF going downwards)
// setSS(0x0000);
// setSP(0x0400);
setSS(0x0050); // Stack at 50:0400, going downwards
setSP(0x0400);
/* Set data segment */
setDS(BDA_SEGMENT);
/* Initialize the BDA and the BIOS ROM Information */
InitializeBiosData();
InitializeBiosInfo();
/* Register the BIOS 32-bit Interrupts */
InitializeBiosInt32();