prep.c File Reference

#include "freeldr.h"
#include "machine.h"
#include "ppcmmu/mmu.h"
#include "prep.h"

Include dependency graph for prep.c:

Go to the source code of this file.

Functions
void	sync ()
void	PpcPrepPutChar (int ch)
BOOLEAN	PpcPrepDiskReadLogicalSectors (ULONG DriveNumber, ULONGLONG SectorNumber, ULONG SectorCount, PVOID Buffer)
BOOLEAN	PpcPrepConsKbHit ()
int	PpcPrepConsGetCh ()
void	PpcPrepVideoClearScreen (UCHAR Attr)
VIDEODISPLAYMODE	PpcPrepVideoSetDisplayMode (char *DisplayMode, BOOLEAN Init)
void	PpcPrepVideoGetDisplaySize (PULONG Width, PULONG Height, PULONG Depth)
VOID	PpcInitializeMmu (int max)
ULONG	PpcPrepGetMemoryMap (PBIOS_MEMORY_MAP BiosMemoryMap, ULONG MaxMemoryMapSize)
PCONFIGURATION_COMPONENT_DATA	PpcPrepHwDetect ()
VOID	PpcPrepHwIdle (VOID)
void	PpcPrepInit ()

Variables
int	prep_serial = 0x800003f8
int	mem_range_end

Function Documentation

PpcInitializeMmu()

VOID PpcInitializeMmu

(

int

max

)

PpcPrepConsGetCh()

int PpcPrepConsGetCh

(

)

Definition at line 42 of file prep.c.

{
    while(!PpcPrepConsKbHit());
    return GetPhysByte(prep_serial);
}

Referenced by PpcPrepInit().

PpcPrepConsKbHit()

BOOLEAN PpcPrepConsKbHit

(

)

Definition at line 36 of file prep.c.

{
    return 1;
    //return GetPhysByte(prep_serial+5) & 1;
}

Referenced by PpcPrepConsGetCh(), and PpcPrepInit().

PpcPrepDiskReadLogicalSectors()

BOOLEAN PpcPrepDiskReadLogicalSectors	(	ULONG	DriveNumber,
		ULONGLONG	SectorNumber,
		ULONG	SectorCount,
		PVOID	Buffer
	)

Definition at line 23 of file prep.c.

                                    {
    int secct;

    for(secct = 0; secct < SectorCount; secct++)
    {
    ide_seek(&ide1_desc, SectorNumber + secct, 0);
    ide_read(&ide1_desc, ((PCHAR)Buffer) + secct * 512, 512);
    }
    /* Never give up! */
    return TRUE;
}

Referenced by PpcPrepInit().

PpcPrepGetMemoryMap()

ULONG PpcPrepGetMemoryMap	(	PBIOS_MEMORY_MAP	BiosMemoryMap,
		ULONG	MaxMemoryMapSize
	)

Definition at line 67 of file prep.c.

{
    // Probe memory
    paddr_t physAddr;
    register int oldStore = 0, newStore = 0, change = 0, oldmsr;

    __asm__("mfmsr %0\n" : "=r" (oldmsr));
    change = oldmsr & 0x6fff;
    __asm__("mtmsr %0\n" : : "r" (change));

    // Find the last ram address in physical space ... this bypasses mapping
    // but could run into non-ram objects right above ram.  Usually systems
    // aren't designed like that though.
    for (physAddr = 0x40000, change = newStore;
         (physAddr < 0x80000000) && (change == newStore);
         physAddr += 1 << 12)
    {
        oldStore = GetPhys(physAddr);
        newStore = (physAddr & 0x1000) ? 0x55aa55aa : 0xaa55aa55;
        SetPhys(physAddr, newStore);
        change = GetPhys(physAddr);
        SetPhys(physAddr, oldStore);
    }
    // Back off by one page
    physAddr -= 0x1000;
    BiosMemoryMap[0].BaseAddress = 0x30000; // End of ppcmmu
    BiosMemoryMap[0].Type = BiosMemoryUsable;
    BiosMemoryMap[0].Length = physAddr - BiosMemoryMap[0].BaseAddress;

    __asm__("mtmsr %0\n" : : "r" (oldmsr));

    mem_range_end = physAddr;

    printf("Actual RAM: %d Mb\n", physAddr >> 20);
    return 1;
}

Referenced by PpcPrepInit().

PpcPrepHwDetect()

PCONFIGURATION_COMPONENT_DATA PpcPrepHwDetect

(

)

Definition at line 107 of file prep.c.

                                                {
  PCONFIGURATION_COMPONENT_DATA SystemKey;

  /* Create the 'System' key */
  FldrCreateSystemKey(&SystemKey);

  printf("DetectHardware() Done\n");
  return SystemKey;
}

Referenced by PpcPrepInit().

PpcPrepHwIdle()

VOID PpcPrepHwIdle

(

VOID

)

Definition at line 118 of file prep.c.

{
    /* UNIMPLEMENTED */
}

PpcPrepInit()

void PpcPrepInit

(

void

)

Definition at line 123 of file prep.c.

{
    MachVtbl.ConsPutChar = PpcPrepPutChar;

    printf("Serial on\n");

    ide_setup( &ide1_desc );

    MachVtbl.DiskReadLogicalSectors = PpcPrepDiskReadLogicalSectors;

    MachVtbl.ConsKbHit   = PpcPrepConsKbHit;
    MachVtbl.ConsGetCh   = PpcPrepConsGetCh;

    MachVtbl.VideoClearScreen = PpcPrepVideoClearScreen;
    MachVtbl.VideoSetDisplayMode = PpcPrepVideoSetDisplayMode;
    MachVtbl.VideoGetDisplaySize = PpcPrepVideoGetDisplaySize;

    MachVtbl.GetMemoryMap = PpcPrepGetMemoryMap;
    MachVtbl.HwDetect = PpcPrepHwDetect;
    MachVtbl.HwIdle = PcPrepHwIdle;

    printf( "FreeLDR version [%s]\n", FrLdrVersionString );

    BootMain( "" );
}

Referenced by PpcInit(), and PpcOfwInit().

PpcPrepPutChar()

void PpcPrepPutChar

(

int

ch

)

Definition at line 13 of file prep.c.

                              {
    if( ch == 0x0a ) {
    SetPhysByte(prep_serial, 0x0d);
    sync();
    }
    SetPhysByte(prep_serial, ch);
    sync();
}

Referenced by PpcPrepInit().

PpcPrepVideoClearScreen()

void PpcPrepVideoClearScreen

(

UCHAR

Attr

)

Definition at line 48 of file prep.c.

{
    printf("\033c");
}

Referenced by PpcPrepInit().

PpcPrepVideoGetDisplaySize()

void PpcPrepVideoGetDisplaySize	(	PULONG	Width,
		PULONG	Height,
		PULONG	Depth
	)

Definition at line 58 of file prep.c.

{
    *Width = 80;
    *Height = 25;
    *Depth = 16;
}

Referenced by PpcPrepInit().

PpcPrepVideoSetDisplayMode()

VIDEODISPLAYMODE PpcPrepVideoSetDisplayMode	(	char *	DisplayMode,
		BOOLEAN	Init
	)

Definition at line 53 of file prep.c.

{
    return VideoTextMode;
}

Referenced by PpcPrepInit().

sync()

void sync

(

void

)

Definition at line 9 of file prep.c.

{ __asm__("eieio\n\tsync"); }

Referenced by ide_bsy(), ide_drq(), ide_rdy(), ide_setup(), pci_read(), pci_write(), PpcPrepPutChar(), and ios_base::sync_with_stdio().

Variable Documentation

mem_range_end

int mem_range_end

Definition at line 167 of file mach.c.

Referenced by PpcGetMemoryMap(), PpcInitializeMmu(), and PpcPrepGetMemoryMap().

prep_serial

int prep_serial = 0x800003f8

Definition at line 6 of file prep.c.

Referenced by PpcPrepConsGetCh(), and PpcPrepPutChar().