URL
https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk
Subversion Repositories openrisc_me
[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [powerpc/] [arch/] [v2_0/] [include/] [hal_mem.h] - Rev 174
Compare with Previous | Blame | View Log
#ifndef CYGONCE_HAL_MEM_H #define CYGONCE_HAL_MEM_H //============================================================================= // // hal_mem.h // // HAL memory control API // //============================================================================= //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // Copyright (C) 2003 Gary Thomas // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //============================================================================= //#####DESCRIPTIONBEGIN#### // // Author(s): nickg // Contributors:nickg, jskov, hmt // Date: 2000-02-11 // Purpose: Memory control API // Description: The macros defined here provide the HAL APIs for handling // simple memory management operations. // Usage: // #include <cyg/hal/hal_mem.h> // ... // // //####DESCRIPTIONEND#### // //============================================================================= #include <pkgconf/hal.h> #include <cyg/infra/cyg_type.h> //============================================================================= // Memory mapping typedef struct { CYG_ADDRESS virtual_addr; CYG_ADDRESS physical_addr; cyg_int32 size; cyg_uint8 flags; } cyg_memdesc_t; // each variant HAL must provide these functions for mapping/clearing // (simple BAT/TLB) memory mappings. externC int cyg_hal_map_memory (int id,CYG_ADDRESS virt, CYG_ADDRESS phys, cyg_int32 size, cyg_uint8 flags); externC void cyg_hal_clear_MMU (void); // each platform HAL must provide one of these to describe how memory // should be mapped/cached, ideally weak aliased so that apps can override: externC cyg_memdesc_t cyg_hal_mem_map[]; #define CYGARC_MEMDESC_CI 1 // cache inhibit #define CYGARC_MEMDESC_GUARDED 2 // guarded // these macros should ease that task, and ease any future extension of the // structure (physical == virtual addresses): #define CYGARC_MEMDESC_CACHE( _va_, _sz_ ) \ { (_va_), (_va_), (_sz_), 0 } #define CYGARC_MEMDESC_NOCACHE( _va_, _sz_ ) \ { (_va_), (_va_), (_sz_), CYGARC_MEMDESC_CI } #define CYGARC_MEMDESC_NOCACHE_PA( _va_, _pa_, _sz_ ) \ { (_va_), (_pa_), (_sz_), CYGARC_MEMDESC_CI } #define CYGARC_MEMDESC_CACHEGUARD( _va_, _sz_ ) \ { (_va_), (_va_), (_sz_), CYGARC_MEMDESC_GUARDED } #define CYGARC_MEMDESC_NOCACHEGUARD( _va_, _sz_ ) \ { (_va_), (_va_), (_sz_), CYGARC_MEMDESC_GUARDED|CYGARC_MEMDESC_CI } #define CYGARC_MEMDESC_TABLE_END {0, 0, 0, 0} #define CYGARC_MEMDESC_TABLE cyg_memdesc_t cyg_hal_mem_map[] #define CYGARC_MEMDESC_EMPTY_TABLE { CYGARC_MEMDESC_TABLE_END } //----------------------------------------------------------------------------- #endif // ifndef CYGONCE_HAL_MEM_H // End of hal_mem.h