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[FREELDR]

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Apply proper indentation, no code change.

svn path=/trunk/; revision=64811
This commit is contained in:
Timo Kreuzer 2014-10-18 19:01:53 +00:00
parent 423388ab06
commit e80c501cf4
1 changed files with 155 additions and 155 deletions
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310
reactos/boot/freeldr/freeldr/arch/i386/pcmem.c
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@ -44,16 +44,16 @@ ULONG PcBiosMapCount;
FREELDR_MEMORY_DESCRIPTOR PcMemoryMap[MAX_BIOS_DESCRIPTORS + 1] =
{
{ LoaderFirmwarePermanent, 0x00, 1 }, // realmode int vectors
{ LoaderFirmwareTemporary, 0x01, FREELDR_BASE_PAGE - 1 }, // freeldr stack + cmdline
{ LoaderLoadedProgram, FREELDR_BASE_PAGE, FREELDR_PAGE_COUNT }, // freeldr image
{ LoaderFirmwareTemporary, DISKBUF_BASE_PAGE, DISKBUF_PAGE_COUNT }, // Disk read buffer for int 13h. DISKREADBUFFER
{ LoaderOsloaderStack, STACK_BASE_PAGE, STACK_PAGE_COUNT }, // prot mode stack.
{ LoaderFirmwareTemporary, BIOSBUF_BASE_PAGE, BIOSBUF_PAGE_COUNT }, // BIOSCALLBUFFER
{ LoaderFirmwarePermanent, 0xA0, 0x50 }, // ROM / Video
{ LoaderSpecialMemory, 0xF0, 0x10 }, // ROM / Video
{ LoaderSpecialMemory, 0xFFF, 1 }, // unusable memory
{ 0, 0, 0 }, // end of map
{ LoaderFirmwarePermanent, 0x00, 1 }, // realmode int vectors
{ LoaderFirmwareTemporary, 0x01, FREELDR_BASE_PAGE - 1 }, // freeldr stack + cmdline
{ LoaderLoadedProgram, FREELDR_BASE_PAGE, FREELDR_PAGE_COUNT }, // freeldr image
{ LoaderFirmwareTemporary, DISKBUF_BASE_PAGE, DISKBUF_PAGE_COUNT }, // Disk read buffer for int 13h. DISKREADBUFFER
{ LoaderOsloaderStack, STACK_BASE_PAGE, STACK_PAGE_COUNT }, // prot mode stack.
{ LoaderFirmwareTemporary, BIOSBUF_BASE_PAGE, BIOSBUF_PAGE_COUNT }, // BIOSCALLBUFFER
{ LoaderFirmwarePermanent, 0xA0, 0x50 }, // ROM / Video
{ LoaderSpecialMemory, 0xF0, 0x10 }, // ROM / Video
{ LoaderSpecialMemory, 0xFFF, 1 }, // unusable memory
{ 0, 0, 0 }, // end of map
};
ULONG
@ -163,187 +163,187 @@ GetExtendedMemoryConfiguration(ULONG* pMemoryAtOneMB /* in KB */, ULONG* pMemory
static ULONG
PcMemGetConventionalMemorySize(VOID)
{
REGS Regs;
REGS Regs;
TRACE("GetConventionalMemorySize()\n");
TRACE("GetConventionalMemorySize()\n");
/* Int 12h
* BIOS - GET MEMORY SIZE
*
* Return:
* AX = kilobytes of contiguous memory starting at absolute address 00000h
*
* This call returns the contents of the word at 0040h:0013h;
* in PC and XT, this value is set from the switches on the motherboard
*/
Regs.w.ax = 0;
Int386(0x12, &Regs, &Regs);
/* Int 12h
* BIOS - GET MEMORY SIZE
*
* Return:
* AX = kilobytes of contiguous memory starting at absolute address 00000h
*
* This call returns the contents of the word at 0040h:0013h;
* in PC and XT, this value is set from the switches on the motherboard
*/
Regs.w.ax = 0;
Int386(0x12, &Regs, &Regs);
TRACE("Int12h\n");
TRACE("AX = 0x%x\n\n", Regs.w.ax);
TRACE("Int12h\n");
TRACE("AX = 0x%x\n\n", Regs.w.ax);
return (ULONG)Regs.w.ax;
return (ULONG)Regs.w.ax;
}
static
ULONG
PcMemGetBiosMemoryMap(PFREELDR_MEMORY_DESCRIPTOR MemoryMap, ULONG MaxMemoryMapSize)
{
REGS Regs;
ULONG MapCount = 0;
ULONGLONG RealBaseAddress, RealSize;
TYPE_OF_MEMORY MemoryType;
ASSERT(PcBiosMapCount == 0);
REGS Regs;
ULONG MapCount = 0;
ULONGLONG RealBaseAddress, RealSize;
TYPE_OF_MEMORY MemoryType;
ASSERT(PcBiosMapCount == 0);
TRACE("GetBiosMemoryMap()\n");
TRACE("GetBiosMemoryMap()\n");
/* Int 15h AX=E820h
* Newer BIOSes - GET SYSTEM MEMORY MAP
*
* AX = E820h
* EAX = 0000E820h
* EDX = 534D4150h ('SMAP')
* EBX = continuation value or 00000000h to start at beginning of map
* ECX = size of buffer for result, in bytes (should be >= 20 bytes)
* ES:DI -> buffer for result
* Return:
* CF clear if successful
* EAX = 534D4150h ('SMAP')
* ES:DI buffer filled
* EBX = next offset from which to copy or 00000000h if all done
* ECX = actual length returned in bytes
* CF set on error
* AH = error code (86h)
*/
Regs.x.ebx = 0x00000000;
/* Int 15h AX=E820h
* Newer BIOSes - GET SYSTEM MEMORY MAP
*
* AX = E820h
* EAX = 0000E820h
* EDX = 534D4150h ('SMAP')
* EBX = continuation value or 00000000h to start at beginning of map
* ECX = size of buffer for result, in bytes (should be >= 20 bytes)
* ES:DI -> buffer for result
* Return:
* CF clear if successful
* EAX = 534D4150h ('SMAP')
* ES:DI buffer filled
* EBX = next offset from which to copy or 00000000h if all done
* ECX = actual length returned in bytes
* CF set on error
* AH = error code (86h)
*/
Regs.x.ebx = 0x00000000;
while (PcBiosMapCount < MAX_BIOS_DESCRIPTORS)
while (PcBiosMapCount < MAX_BIOS_DESCRIPTORS)
{
/* Setup the registers for the BIOS call */
Regs.x.eax = 0x0000E820;
Regs.x.edx = 0x534D4150; /* ('SMAP') */
/* Regs.x.ebx = 0x00000001; Continuation value already set */
Regs.x.ecx = sizeof(BIOS_MEMORY_MAP);
Regs.w.es = BIOSCALLBUFSEGMENT;
Regs.w.di = BIOSCALLBUFOFFSET;
Int386(0x15, &Regs, &Regs);
/* Setup the registers for the BIOS call */
Regs.x.eax = 0x0000E820;
Regs.x.edx = 0x534D4150; /* ('SMAP') */
/* Regs.x.ebx = 0x00000001; Continuation value already set */
Regs.x.ecx = sizeof(BIOS_MEMORY_MAP);
Regs.w.es = BIOSCALLBUFSEGMENT;
Regs.w.di = BIOSCALLBUFOFFSET;
Int386(0x15, &Regs, &Regs);
TRACE("Memory Map Entry %d\n", PcBiosMapCount);
TRACE("Int15h AX=E820h\n");
TRACE("EAX = 0x%x\n", Regs.x.eax);
TRACE("EBX = 0x%x\n", Regs.x.ebx);
TRACE("ECX = 0x%x\n", Regs.x.ecx);
TRACE("CF set = %s\n", (Regs.x.eflags & EFLAGS_CF) ? "TRUE" : "FALSE");
TRACE("Memory Map Entry %d\n", PcBiosMapCount);
TRACE("Int15h AX=E820h\n");
TRACE("EAX = 0x%x\n", Regs.x.eax);
TRACE("EBX = 0x%x\n", Regs.x.ebx);
TRACE("ECX = 0x%x\n", Regs.x.ecx);
TRACE("CF set = %s\n", (Regs.x.eflags & EFLAGS_CF) ? "TRUE" : "FALSE");
/* If the BIOS didn't return 'SMAP' in EAX then
* it doesn't support this call. If CF is set, we're done */
if (Regs.x.eax != 0x534D4150 || !INT386_SUCCESS(Regs))
/* If the BIOS didn't return 'SMAP' in EAX then
* it doesn't support this call. If CF is set, we're done */
if (Regs.x.eax != 0x534D4150 || !INT386_SUCCESS(Regs))
{
break;
break;
}
/* Copy data to global buffer */
RtlCopyMemory(&PcBiosMemoryMap[PcBiosMapCount], (PVOID)BIOSCALLBUFFER, Regs.x.ecx);
/* Copy data to global buffer */
RtlCopyMemory(&PcBiosMemoryMap[PcBiosMapCount], (PVOID)BIOSCALLBUFFER, Regs.x.ecx);
TRACE("BaseAddress: 0x%llx\n", PcBiosMemoryMap[PcBiosMapCount].BaseAddress);
TRACE("Length: 0x%llx\n", PcBiosMemoryMap[PcBiosMapCount].Length);
TRACE("Type: 0x%lx\n", PcBiosMemoryMap[PcBiosMapCount].Type);
TRACE("Reserved: 0x%lx\n", PcBiosMemoryMap[PcBiosMapCount].Reserved);
TRACE("\n");
TRACE("BaseAddress: 0x%llx\n", PcBiosMemoryMap[PcBiosMapCount].BaseAddress);
TRACE("Length: 0x%llx\n", PcBiosMemoryMap[PcBiosMapCount].Length);
TRACE("Type: 0x%lx\n", PcBiosMemoryMap[PcBiosMapCount].Type);
TRACE("Reserved: 0x%lx\n", PcBiosMemoryMap[PcBiosMapCount].Reserved);
TRACE("\n");
/* Check if this is free memory */
if (PcBiosMemoryMap[PcBiosMapCount].Type == BiosMemoryUsable)
{
MemoryType = LoaderFree;
/* Align up base of memory area */
RealBaseAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress & ~(MM_PAGE_SIZE - 1ULL);
/* Calculate the length after aligning the base */
RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
RealSize = (RealSize + MM_PAGE_SIZE - 1) & ~(MM_PAGE_SIZE - 1ULL);
}
else
{
if (PcBiosMemoryMap[PcBiosMapCount].Type == BiosMemoryReserved)
MemoryType = LoaderFirmwarePermanent;
else
MemoryType = LoaderSpecialMemory;
/* Align down base of memory area */
RealBaseAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress & ~(MM_PAGE_SIZE - 1ULL);
/* Calculate the length after aligning the base */
RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
RealSize = (RealSize + MM_PAGE_SIZE - 1) & ~(MM_PAGE_SIZE - 1ULL);
}
/* Check if we can add this descriptor */
if ((RealSize >= MM_PAGE_SIZE) && (MapCount < MaxMemoryMapSize))
{
/* Add the descriptor */
MapCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
(PFN_NUMBER)(RealBaseAddress / MM_PAGE_SIZE),
(PFN_NUMBER)(RealSize / MM_PAGE_SIZE),
MemoryType);
}
PcBiosMapCount++;
/* If the continuation value is zero or the
* carry flag is set then this was
* the last entry so we're done */
if (Regs.x.ebx == 0x00000000)
/* Check if this is free memory */
if (PcBiosMemoryMap[PcBiosMapCount].Type == BiosMemoryUsable)
{
TRACE("End Of System Memory Map!\n\n");
break;
MemoryType = LoaderFree;
/* Align up base of memory area */
RealBaseAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress & ~(MM_PAGE_SIZE - 1ULL);
/* Calculate the length after aligning the base */
RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
RealSize = (RealSize + MM_PAGE_SIZE - 1) & ~(MM_PAGE_SIZE - 1ULL);
}
else
{
if (PcBiosMemoryMap[PcBiosMapCount].Type == BiosMemoryReserved)
MemoryType = LoaderFirmwarePermanent;
else
MemoryType = LoaderSpecialMemory;
/* Align down base of memory area */
RealBaseAddress = PcBiosMemoryMap[PcBiosMapCount].BaseAddress & ~(MM_PAGE_SIZE - 1ULL);
/* Calculate the length after aligning the base */
RealSize = PcBiosMemoryMap[PcBiosMapCount].BaseAddress +
PcBiosMemoryMap[PcBiosMapCount].Length - RealBaseAddress;
RealSize = (RealSize + MM_PAGE_SIZE - 1) & ~(MM_PAGE_SIZE - 1ULL);
}
/* Check if we can add this descriptor */
if ((RealSize >= MM_PAGE_SIZE) && (MapCount < MaxMemoryMapSize))
{
/* Add the descriptor */
MapCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
(PFN_NUMBER)(RealBaseAddress / MM_PAGE_SIZE),
(PFN_NUMBER)(RealSize / MM_PAGE_SIZE),
MemoryType);
}
PcBiosMapCount++;
/* If the continuation value is zero or the
* carry flag is set then this was
* the last entry so we're done */
if (Regs.x.ebx == 0x00000000)
{
TRACE("End Of System Memory Map!\n\n");
break;
}
}
return MapCount;
return MapCount;
}
PFREELDR_MEMORY_DESCRIPTOR
PcMemGetMemoryMap(ULONG *MemoryMapSize)
{
ULONG i, EntryCount;
ULONG ExtendedMemorySizeAtOneMB;
ULONG ExtendedMemorySizeAtSixteenMB;
ULONG i, EntryCount;
ULONG ExtendedMemorySizeAtOneMB;
ULONG ExtendedMemorySizeAtSixteenMB;
EntryCount = PcMemGetBiosMemoryMap(PcMemoryMap, MAX_BIOS_DESCRIPTORS);
EntryCount = PcMemGetBiosMemoryMap(PcMemoryMap, MAX_BIOS_DESCRIPTORS);
/* If the BIOS didn't provide a memory map, synthesize one */
if (0 == EntryCount)
/* If the BIOS didn't provide a memory map, synthesize one */
if (0 == EntryCount)
{
GetExtendedMemoryConfiguration(&ExtendedMemorySizeAtOneMB, &ExtendedMemorySizeAtSixteenMB);
GetExtendedMemoryConfiguration(&ExtendedMemorySizeAtOneMB, &ExtendedMemorySizeAtSixteenMB);
/* Conventional memory */
AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
0,
PcMemGetConventionalMemorySize() * 1024 / PAGE_SIZE,
LoaderFree);
/* Conventional memory */
AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
0,
PcMemGetConventionalMemorySize() * 1024 / PAGE_SIZE,
LoaderFree);
/* Extended memory */
EntryCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
1024 * 1024 / PAGE_SIZE,
ExtendedMemorySizeAtOneMB * 1024 / PAGE_SIZE,
LoaderFree);
if (ExtendedMemorySizeAtSixteenMB != 0)
{
/* Extended memory at 16MB */
/* Extended memory */
EntryCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
0x1000000 / PAGE_SIZE,
ExtendedMemorySizeAtSixteenMB * 64 * 1024 / PAGE_SIZE,
LoaderFree);
}
MAX_BIOS_DESCRIPTORS,
1024 * 1024 / PAGE_SIZE,
ExtendedMemorySizeAtOneMB * 1024 / PAGE_SIZE,
LoaderFree);
if (ExtendedMemorySizeAtSixteenMB != 0)
{
/* Extended memory at 16MB */
EntryCount = AddMemoryDescriptor(PcMemoryMap,
MAX_BIOS_DESCRIPTORS,
0x1000000 / PAGE_SIZE,
ExtendedMemorySizeAtSixteenMB * 64 * 1024 / PAGE_SIZE,
LoaderFree);
}
}
TRACE("Dumping resulting memory map:\n");
@ -355,9 +355,9 @@ PcMemGetMemoryMap(ULONG *MemoryMapSize)
MmGetSystemMemoryMapTypeString(PcMemoryMap[i].MemoryType));
}
*MemoryMapSize = EntryCount;
*MemoryMapSize = EntryCount;
return PcMemoryMap;
return PcMemoryMap;
}
/* EOF */