92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
/***************************************************************************
|
|
* Copyright (C) 2005 by Dominic Rath *
|
|
* Dominic.Rath@gmx.de *
|
|
***************************************************************************/
|
|
|
|
#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_invocation *cmd, struct armv4_5_cache_common *armv4_5_cache)
|
|
{
|
|
if (armv4_5_cache->ctype == -1) {
|
|
command_print(cmd, "cache not yet identified");
|
|
return ERROR_OK;
|
|
}
|
|
|
|
command_print(cmd, "cache type: 0x%1.1x, %s", armv4_5_cache->ctype,
|
|
(armv4_5_cache->separate) ? "separate caches" : "unified cache");
|
|
|
|
command_print(cmd, "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, "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;
|
|
}
|