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.
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21 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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29 // or inline functions from this file, or you compile this file and link it
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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 paddr = hal_virt_to_phy((unsigned long)(vaddr)); \
63 * translate the virtual address of ram space to physical address
64 * It is dependent on the implementation of hal_mmu_init
66 #ifndef RAM_BANK0_SIZE
67 #warning using SDRAM_SIZE for RAM_BANK0_SIZE
68 #define RAM_BANK0_SIZE SDRAM_SIZE
71 static unsigned long __inline__ hal_virt_to_phy(unsigned long virt)
75 * 00000000..01ffffff -> 80000000..81ffffff
76 * 02000000..03ffffff -> 90000000..91ffffff
77 * 80000000..81ffffff -> 80000000..81ffffff
78 * 82000000..83ffffff -> 90000000..91ffffff
79 * 88000000..89ffffff -> 80000000..81ffffff (uncached)
80 * 8a000000..8bffffff -> 90000000..91ffffff (uncached)
82 if (virt < SDRAM_SIZE) {
83 return virt | (virt < RAM_BANK0_SIZE ? CSD0_BASE_ADDR : CSD1_BASE_ADDR);
85 if ((virt & 0xF0000000) == CSD0_BASE_ADDR) {
86 virt &= ~0x08000000; /* clear uncached mapping indicator */
87 if (virt >= CSD0_BASE_ADDR + RAM_BANK0_SIZE) {
88 virt = virt - (CSD0_BASE_ADDR + RAM_BANK0_SIZE) + CSD1_BASE_ADDR;
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 /* 0x88000000~0x8BFFFFFF 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