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- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * 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, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "armv4_5_cache.h"
- #include <helper/log.h>
-
- int armv4_5_identify_cache(uint32_t cache_type_reg, struct armv4_5_cache_common *cache)
- {
- int size, assoc, M, len, multiplier;
-
- cache->ctype = (cache_type_reg & 0x1e000000U) >> 25;
- cache->separate = (cache_type_reg & 0x01000000U) >> 24;
-
- size = (cache_type_reg & 0x1c0000) >> 18;
- assoc = (cache_type_reg & 0x38000) >> 15;
- M = (cache_type_reg & 0x4000) >> 14;
- len = (cache_type_reg & 0x3000) >> 12;
- multiplier = 2 + M;
-
- if ((assoc != 0) || (M != 1)) /* assoc 0 and M 1 means cache absent */ {
- /* cache is present */
- cache->d_u_size.linelen = 1 << (len + 3);
- cache->d_u_size.associativity = multiplier << (assoc - 1);
- cache->d_u_size.nsets = 1 << (size + 6 - assoc - len);
- cache->d_u_size.cachesize = multiplier << (size + 8);
- } else {
- /* cache is absent */
- cache->d_u_size.linelen = -1;
- cache->d_u_size.associativity = -1;
- cache->d_u_size.nsets = -1;
- cache->d_u_size.cachesize = -1;
- }
-
- if (cache->separate) {
- size = (cache_type_reg & 0x1c0) >> 6;
- assoc = (cache_type_reg & 0x38) >> 3;
- M = (cache_type_reg & 0x4) >> 2;
- len = (cache_type_reg & 0x3);
- multiplier = 2 + M;
-
- if ((assoc != 0) || (M != 1)) /* assoc 0 and M 1 means cache absent */ {
- /* cache is present */
- cache->i_size.linelen = 1 << (len + 3);
- cache->i_size.associativity = multiplier << (assoc - 1);
- cache->i_size.nsets = 1 << (size + 6 - assoc - len);
- cache->i_size.cachesize = multiplier << (size + 8);
- } else {
- /* cache is absent */
- cache->i_size.linelen = -1;
- cache->i_size.associativity = -1;
- cache->i_size.nsets = -1;
- cache->i_size.cachesize = -1;
- }
- } else
- cache->i_size = cache->d_u_size;
-
- return ERROR_OK;
- }
-
- int armv4_5_handle_cache_info_command(struct command_context *cmd_ctx, struct armv4_5_cache_common *armv4_5_cache)
- {
- if (armv4_5_cache->ctype == -1) {
- command_print(cmd_ctx, "cache not yet identified");
- return ERROR_OK;
- }
-
- command_print(cmd_ctx, "cache type: 0x%1.1x, %s", armv4_5_cache->ctype,
- (armv4_5_cache->separate) ? "separate caches" : "unified cache");
-
- command_print(cmd_ctx, "D-Cache: linelen %i, associativity %i, nsets %i, cachesize 0x%x",
- armv4_5_cache->d_u_size.linelen,
- armv4_5_cache->d_u_size.associativity,
- armv4_5_cache->d_u_size.nsets,
- armv4_5_cache->d_u_size.cachesize);
-
- command_print(cmd_ctx, "I-Cache: linelen %i, associativity %i, nsets %i, cachesize 0x%x",
- armv4_5_cache->i_size.linelen,
- armv4_5_cache->i_size.associativity,
- armv4_5_cache->i_size.nsets,
- armv4_5_cache->i_size.cachesize);
-
- return ERROR_OK;
- }
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