| 1 |
27 |
unneback |
#ifndef CYGONCE_HAL_SA11X0_PLATFORM_PLF_MMAP_H
|
| 2 |
|
|
#define CYGONCE_HAL_SA11X0_PLATFORM_PLF_MMAP_H
|
| 3 |
|
|
/*=============================================================================
|
| 4 |
|
|
//
|
| 5 |
|
|
// plf_mmap.h
|
| 6 |
|
|
//
|
| 7 |
|
|
// Platform specific memory map support
|
| 8 |
|
|
//
|
| 9 |
|
|
//=============================================================================
|
| 10 |
|
|
//####ECOSGPLCOPYRIGHTBEGIN####
|
| 11 |
|
|
// -------------------------------------------
|
| 12 |
|
|
// This file is part of eCos, the Embedded Configurable Operating System.
|
| 13 |
|
|
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
| 14 |
|
|
//
|
| 15 |
|
|
// eCos is free software; you can redistribute it and/or modify it under
|
| 16 |
|
|
// the terms of the GNU General Public License as published by the Free
|
| 17 |
|
|
// Software Foundation; either version 2 or (at your option) any later version.
|
| 18 |
|
|
//
|
| 19 |
|
|
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
| 20 |
|
|
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
| 21 |
|
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
| 22 |
|
|
// for more details.
|
| 23 |
|
|
//
|
| 24 |
|
|
// You should have received a copy of the GNU General Public License along
|
| 25 |
|
|
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
| 26 |
|
|
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
| 27 |
|
|
//
|
| 28 |
|
|
// As a special exception, if other files instantiate templates or use macros
|
| 29 |
|
|
// or inline functions from this file, or you compile this file and link it
|
| 30 |
|
|
// with other works to produce a work based on this file, this file does not
|
| 31 |
|
|
// by itself cause the resulting work to be covered by the GNU General Public
|
| 32 |
|
|
// License. However the source code for this file must still be made available
|
| 33 |
|
|
// in accordance with section (3) of the GNU General Public License.
|
| 34 |
|
|
//
|
| 35 |
|
|
// This exception does not invalidate any other reasons why a work based on
|
| 36 |
|
|
// this file might be covered by the GNU General Public License.
|
| 37 |
|
|
//
|
| 38 |
|
|
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
| 39 |
|
|
// at http://sources.redhat.com/ecos/ecos-license/
|
| 40 |
|
|
// -------------------------------------------
|
| 41 |
|
|
//####ECOSGPLCOPYRIGHTEND####
|
| 42 |
|
|
//=============================================================================
|
| 43 |
|
|
//#####DESCRIPTIONBEGIN####
|
| 44 |
|
|
//
|
| 45 |
|
|
// Author(s): hmt
|
| 46 |
|
|
// Contributors: hmt
|
| 47 |
|
|
// Date: 2001-01-04
|
| 48 |
|
|
// Purpose: Intel SA11x0 series platform-specific memory mapping macros
|
| 49 |
|
|
// Description: Macros to convert a cached, virtual address to
|
| 50 |
|
|
// 1) an uncached adddress for the same memory (if available)
|
| 51 |
|
|
// 2) the equivalent physical address for giving to external
|
| 52 |
|
|
// hardware eg. DMA engines.
|
| 53 |
|
|
//
|
| 54 |
|
|
// NB: this mapping is expressed here statically, independent
|
| 55 |
|
|
// of the actual mapping installed in the MMAP table. So if
|
| 56 |
|
|
// someone changes that, or its initialisation is changed,
|
| 57 |
|
|
// then this module must change. This is intended to be
|
| 58 |
|
|
// efficient at a cost of generality. It is also intended to
|
| 59 |
|
|
// be called with constants (such as &my_struct) as input
|
| 60 |
|
|
// args, so that all the work can be done at compile time,
|
| 61 |
|
|
// with optimization on.
|
| 62 |
|
|
//
|
| 63 |
|
|
// Usage: #include <cyg/hal/hal_cache.h>
|
| 64 |
|
|
// (which includes this file itself)
|
| 65 |
|
|
//
|
| 66 |
|
|
//####DESCRIPTIONEND####
|
| 67 |
|
|
//
|
| 68 |
|
|
//===========================================================================*/
|
| 69 |
|
|
|
| 70 |
|
|
#include <cyg/hal/hal_misc.h>
|
| 71 |
|
|
|
| 72 |
|
|
// Get the pagesize for a particular virtual address:
|
| 73 |
|
|
|
| 74 |
|
|
// This does not depend on the vaddr.
|
| 75 |
|
|
#define HAL_MM_PAGESIZE( vaddr, pagesize ) CYG_MACRO_START \
|
| 76 |
|
|
(pagesize) = SZ_1M; \
|
| 77 |
|
|
CYG_MACRO_END
|
| 78 |
|
|
|
| 79 |
|
|
// Get the physical address from a virtual address:
|
| 80 |
|
|
|
| 81 |
|
|
// Only RAM and ROM are mapped; we just pass through all other values,
|
| 82 |
|
|
// rather than detecting nonexistent areas here.
|
| 83 |
|
|
|
| 84 |
|
|
#define HAL_VIRT_TO_PHYS_ADDRESS( vaddr, paddr ) CYG_MACRO_START \
|
| 85 |
|
|
cyg_uint32 _v_ = (cyg_uint32)(vaddr); \
|
| 86 |
|
|
if ( 8 * SZ_1M > _v_ ) /* 8Mb of SDRAM Bank 0 from 0-32Mb */ \
|
| 87 |
|
|
_v_ += 0xc00u * SZ_1M; \
|
| 88 |
|
|
else if ( 0x500u * SZ_1M > _v_ ) /* Space between RAM and mapped ROM */\
|
| 89 |
|
|
/* no change */ ; \
|
| 90 |
|
|
else if ( 0x501u * SZ_1M > _v_ ) /* Mapped boot ROM size 1Mb */ \
|
| 91 |
|
|
_v_ -= 0x500u * SZ_1M; \
|
| 92 |
|
|
else /* Rest of it */ \
|
| 93 |
|
|
/* no change */ ; \
|
| 94 |
|
|
(paddr) = _v_; \
|
| 95 |
|
|
CYG_MACRO_END
|
| 96 |
|
|
|
| 97 |
|
|
// Get the virtual address for a physical address:
|
| 98 |
|
|
|
| 99 |
|
|
// Only RAM and ROM are mapped; we just pass through all other values,
|
| 100 |
|
|
// rather than detecting nonexistent areas here.
|
| 101 |
|
|
|
| 102 |
|
|
#define HAL_PHYS_TO_VIRT_ADDRESS( paddr, vaddr ) CYG_MACRO_START \
|
| 103 |
|
|
cyg_uint32 _p_ = (cyg_uint32)(paddr); \
|
| 104 |
|
|
if ( 1 * SZ_1M > _p_ ) /* 1Mb Boot ROM mapped to 0x500Mb */ \
|
| 105 |
|
|
_p_ += 0x500u * SZ_1M; \
|
| 106 |
|
|
else if ( 0xc00u * SZ_1M > _p_ ) /* Space between ROM and SDRAM */ \
|
| 107 |
|
|
/* no change */ ; \
|
| 108 |
|
|
else if ( 0xc08u * SZ_1M > _p_ ) /* Raw RAM size 8Mb */ \
|
| 109 |
|
|
_p_ -= 0xc00u * SZ_1M; \
|
| 110 |
|
|
else /* Rest of it */ \
|
| 111 |
|
|
/* no change */ ; \
|
| 112 |
|
|
(vaddr) = _p_ ; \
|
| 113 |
|
|
CYG_MACRO_END
|
| 114 |
|
|
|
| 115 |
|
|
// Get a non-cacheable address for accessing the same store as a virtual
|
| 116 |
|
|
// (assumed cachable) address:
|
| 117 |
|
|
|
| 118 |
|
|
// Only RAM is mapped: ROM is only available cachable, everything else is
|
| 119 |
|
|
// not cachable anyway.
|
| 120 |
|
|
|
| 121 |
|
|
#define HAL_VIRT_TO_UNCACHED_ADDRESS( vaddr, uaddr ) CYG_MACRO_START \
|
| 122 |
|
|
cyg_uint32 _v_ = (cyg_uint32)(vaddr); \
|
| 123 |
|
|
if ( 8 * SZ_1M > _v_ ) /* 8Mb of SDRAM Bank 0 from 0-32Mb */ \
|
| 124 |
|
|
_v_ += 0xc00u * SZ_1M; \
|
| 125 |
|
|
else /* Everything else is already uncacheable or is ROM */ \
|
| 126 |
|
|
/* no change */ ; \
|
| 127 |
|
|
(uaddr) = _v_ ; \
|
| 128 |
|
|
CYG_MACRO_END
|
| 129 |
|
|
|
| 130 |
|
|
//---------------------------------------------------------------------------
|
| 131 |
|
|
#endif // CYGONCE_HAL_SA11X0_PLATFORM_PLF_MMAP_H
|
| 132 |
|
|
// EOF plf_mmap.h
|
