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/*
* File: include/asm-blackfin/cplbinit.h
* Based on:
* Author:
*
* Created:
* Description:
*
* Modified:
* Copyright 2004-2006 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __ASM_CPLBINIT_H__
#define __ASM_CPLBINIT_H__
#include <asm/blackfin.h>
#include <asm/cplb.h>
#ifdef CONFIG_MPU
#include <asm/cplb-mpu.h>
#else
#define INITIAL_T 0x1
#define SWITCH_T 0x2
#define I_CPLB 0x4
#define D_CPLB 0x8
#define IN_KERNEL 1
enum
{ZERO_P, L1I_MEM, L1D_MEM, SDRAM_KERN , SDRAM_RAM_MTD, SDRAM_DMAZ, RES_MEM, ASYNC_MEM, L2_MEM};
struct cplb_desc {
u32 start; /* start address */
u32 end; /* end address */
u32 psize; /* prefered size if any otherwise 1MB or 4MB*/
u16 attr;/* attributes */
u16 i_conf;/* I-CPLB DATA */
u16 d_conf;/* D-CPLB DATA */
u16 valid;/* valid */
const s8 name[30];/* name */
};
struct cplb_tab {
u_long *tab;
u16 pos;
u16 size;
};
extern u_long icplb_table[];
extern u_long dcplb_table[];
/* Till here we are discussing about the static memory management model.
* However, the operating envoronments commonly define more CPLB
* descriptors to cover the entire addressable memory than will fit into
* the available on-chip 16 CPLB MMRs. When this happens, the below table
* will be used which will hold all the potentially required CPLB descriptors
*
* This is how Page descriptor Table is implemented in uClinux/Blackfin.
*/
extern u_long ipdt_table[];
extern u_long dpdt_table[];
#ifdef CONFIG_CPLB_INFO
extern u_long ipdt_swapcount_table[];
extern u_long dpdt_swapcount_table[];
#endif
#endif /* CONFIG_MPU */
extern unsigned long reserved_mem_dcache_on;
extern unsigned long reserved_mem_icache_on;
extern void generate_cplb_tables(void);
static inline int bfin_addr_dcachable(unsigned long addr)
{
#ifdef CONFIG_BFIN_DCACHE
if (addr < (_ramend - DMA_UNCACHED_REGION))
return 1;
#endif
if (reserved_mem_dcache_on &&
addr >= _ramend && addr < physical_mem_end)
return 1;
return 0;
}
#endif
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