1 #ifndef CYGONCE_HAL_BOARD_PLATFORM_PLF_MMAP_H
2 #define CYGONCE_HAL_BOARD_PLATFORM_PLF_MMAP_H
3 //=============================================================================
7 // Platform specific memory map support
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.
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.
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
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.
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.
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.
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 //===========================================================================
44 #include <cyg/hal/hal_misc.h>
45 #include CYGHWR_MEMORY_LAYOUT_H
47 // Get the pagesize for a particular virtual address:
49 // This does not depend on the vaddr.
50 #define HAL_MM_PAGESIZE(vaddr, pagesize) \
55 // Get the physical address from a virtual address:
57 #define HAL_VIRT_TO_PHYS_ADDRESS(vaddr, paddr) \
59 cyg_uint32 _v_ = (cyg_uint32)(vaddr); \
60 if (_v_ < 128 * SZ_1M) /* SDRAM */ \
61 _v_ += SDRAM_BASE_ADDR; \
62 else /* Rest of it */ \
68 * translate the virtual address of ram space to physical address
69 * It is dependent on the implementation of hal_mmu_init
71 #ifndef RAM_BANK0_SIZE
72 #warning using SDRAM_SIZE for RAM_BANK0_SIZE
73 #define RAM_BANK0_SIZE SDRAM_SIZE
76 static unsigned long __inline__ hal_virt_to_phy(unsigned long virt)
80 90000000 -> 80000000 + (SDRAM_SIZE / 2)
82 if (virt < 0x08000000) {
83 return virt | (virt < RAM_BANK0_SIZE ? CSD0_BASE_ADDR : CSD1_BASE_ADDR);
85 if ((virt & 0xF0000000) == CSD0_BASE_ADDR) {
87 if (virt >= CSD0_BASE_ADDR + RAM_BANK0_SIZE) {
88 virt = virt - CSD0_BASE_ADDR + CSD1_BASE_ADDR - RAM_BANK0_SIZE;
95 * remap the physical address of ram space to uncacheable virtual address space
96 * It is dependent on the implementation of hal_mmu_init
98 static unsigned long __inline__ hal_ioremap_nocache(unsigned long phy)
100 /* 0x88000000~0x88FFFFFF is uncacheable memory space which is mapped to SDRAM */
101 if ((phy & 0xF0000000) == CSD0_BASE_ADDR) {
104 if ((phy & 0xF0000000) == CSD1_BASE_ADDR) {
105 phy = (phy - CSD1_BASE_ADDR + CSD0_BASE_ADDR + RAM_BANK0_SIZE) | 0x08000000;
110 //---------------------------------------------------------------------------
111 #endif // CYGONCE_HAL_BOARD_PLATFORM_PLF_MMAP_H