e78ae282c0
mechanism defined for armv7 (and also present on some armv6 chips including
the arm1176 used on rpi). The information is parsed into a global cpuinfo
structure, which will be used by (upcoming) new cache and tlb maintenance
code to handle cpu-specific variations of the maintence sequences.
Submitted by: Svatopluk Kraus <onwahe@gmail.com>,
Michal Meloun <meloun@miracle.cz
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/*-
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* Copyright 2014 Svatopluk Kraus <onwahe@gmail.com>
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* Copyright 2014 Michal Meloun <meloun@miracle.cz>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CPUINFO_H_
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#define _MACHINE_CPUINFO_H_
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#include <sys/types.h>
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struct cpuinfo {
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/* raw id registers */
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uint32_t midr;
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uint32_t ctr;
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uint32_t tcmtr;
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uint32_t tlbtr;
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uint32_t mpidr;
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uint32_t revidr;
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uint32_t id_pfr0;
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uint32_t id_pfr1;
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uint32_t id_dfr0;
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uint32_t id_afr0;
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uint32_t id_mmfr0;
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uint32_t id_mmfr1;
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uint32_t id_mmfr2;
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uint32_t id_mmfr3;
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uint32_t id_isar0;
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uint32_t id_isar1;
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uint32_t id_isar2;
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uint32_t id_isar3;
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uint32_t id_isar4;
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uint32_t id_isar5;
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uint32_t cbar;
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/* Parsed bits of above registers... */
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/* midr */
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int implementer;
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int revision;
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int architecture;
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int part_number;
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int patch;
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/* id_mmfr0 */
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int outermost_shareability;
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int shareability_levels;
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int auxiliary_registers;
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int innermost_shareability;
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/* id_mmfr1 */
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int mem_barrier;
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/* id_mmfr3 */
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int coherent_walk;
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int maintenance_broadcast;
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/* id_pfr1 */
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int generic_timer_ext;
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int virtualization_ext;
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int security_ext;
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};
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extern struct cpuinfo cpuinfo;
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void cpuinfo_init(void);
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#endif /* _MACHINE_CPUINFO_H_ */
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