map.c

arm4 driver for freescale imx35

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this sample source code is subject to the terms of the Microsoft
// license agreement under which you licensed this sample source code. If
// you did not accept the terms of the license agreement, you are not
// authorized to use this sample source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the LICENSE.RTF on your install media or the root of your tools installation.
// THE SAMPLE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES.
//
//------------------------------------------------------------------------------
//
//  File:  map.c
//
#include <eboot.h>

extern OAL_ADDRESS_TABLE g_oalAddressTable[];

//------------------------------------------------------------------------------

VOID* OALPAtoVA(UINT32 pa, BOOL cached)
{
    return (VOID*)pa;
}

//------------------------------------------------------------------------------

UINT32 OALVAtoPA(VOID *va)
{
    return (UINT32)va;
}

VOID* BLVAtoPA(    UINT32 address)
{
    VOID *pAddress = INVALID_HANDLE_VALUE;
    OAL_ADDRESS_TABLE *pTable = g_oalAddressTable;

    if (address < 0x80000000 || address >= 0xC0000000) goto cleanUp;

    // Address must be cached, as entries in OEMAddressTable are cached
    address = address & ~OAL_MEMORY_CACHE_BIT;

    // Search the table for address range
    while (pTable->size != 0)
    {
        if ((address >= pTable->CA) &&
            (address <= (pTable->CA + (pTable->size << 20) - 1)))
        {
            break;
        }
        pTable++;
    }

    // If address table entry is valid compute the PA
    if (pTable->size == 0) 
		goto cleanUp;

	// Get final address
    pAddress = (UINT8*)(pTable->PA + address - pTable->CA);

cleanUp:
    return pAddress;
}



VOID* NKCreateStaticMapping(DWORD phBase, DWORD size)
{
    return OALPAtoUA(phBase << 8);
}


//------------------------------------------------------------------------------