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author | Bernd Schmidt <bernd.schmidt@analog.com> | 2008-01-27 18:39:16 +0800 |
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committer | Bryan Wu <bryan.wu@analog.com> | 2008-01-27 18:39:16 +0800 |
commit | b97b8a998397e8c64699559099fa9febffae2b4d (patch) | |
tree | 689188b6336cf45b4391f5bc764878e342b9ac90 /include/asm-blackfin/cplb-mpu.h | |
parent | 2047e40d724d42928c0b5994a1568c1b738efdb7 (diff) | |
download | kernel-crypto-b97b8a998397e8c64699559099fa9febffae2b4d.tar.gz kernel-crypto-b97b8a998397e8c64699559099fa9febffae2b4d.tar.xz kernel-crypto-b97b8a998397e8c64699559099fa9febffae2b4d.zip |
[Blackfin] arch: Initial checkin of the memory protection support.
Enable it with CONFIG_MPU.
Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'include/asm-blackfin/cplb-mpu.h')
-rw-r--r-- | include/asm-blackfin/cplb-mpu.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/include/asm-blackfin/cplb-mpu.h b/include/asm-blackfin/cplb-mpu.h new file mode 100644 index 00000000000..75c67b99d60 --- /dev/null +++ b/include/asm-blackfin/cplb-mpu.h @@ -0,0 +1,61 @@ +/* + * 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_BFIN_CPLB_MPU_H +#define __ASM_BFIN_CPLB_MPU_H + +struct cplb_entry { + unsigned long data, addr; +}; + +struct mem_region { + unsigned long start, end; + unsigned long dcplb_data; + unsigned long icplb_data; +}; + +extern struct cplb_entry dcplb_tbl[MAX_CPLBS]; +extern struct cplb_entry icplb_tbl[MAX_CPLBS]; +extern int first_switched_icplb; +extern int first_mask_dcplb; +extern int first_switched_dcplb; + +extern int nr_dcplb_miss, nr_icplb_miss, nr_icplb_supv_miss, nr_dcplb_prot; +extern int nr_cplb_flush; + +extern int page_mask_order; +extern int page_mask_nelts; + +extern unsigned long *current_rwx_mask; + +extern void flush_switched_cplbs(void); +extern void set_mask_dcplbs(unsigned long *); + +extern void __noreturn panic_cplb_error(int seqstat, struct pt_regs *); + +#endif /* __ASM_BFIN_CPLB_MPU_H */ |