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AMU: Add configuration helpers for aarch64

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Add some AMU helper functions to allow configuring, reading and
writing of the Group 0 and Group 1 counters.  Documentation for these
helpers will come in a separate patch.

Change-Id: I656e070d2dae830c22414f694aa655341d4e2c40
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
This commit is contained in:
Dimitris Papastamos 2017-11-13 09:49:45 +00:00
parent 59902b7c4c
commit 0767d50e69
8 changed files with 469 additions and 43 deletions
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11
include/lib/extensions/amu.h
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@ -10,6 +10,7 @@
#include <sys/cdefs.h> /* for CASSERT() */
#include <cassert.h>
#include <platform_def.h>
#include <stdint.h>
/* All group 0 counters */
#define AMU_GROUP0_COUNTERS_MASK 0xf
@ -29,6 +30,16 @@
CASSERT(AMU_GROUP1_COUNTERS_MASK <= 0xffff, invalid_amu_group1_counters_mask);
CASSERT(AMU_GROUP1_NR_COUNTERS <= 16, invalid_amu_group1_nr_counters);
int amu_supported(void);
void amu_enable(int el2_unused);
/* Group 0 configuration helpers */
uint64_t amu_group0_cnt_read(int idx);
void amu_group0_cnt_write(int idx, uint64_t val);
/* Group 1 configuration helpers */
uint64_t amu_group1_cnt_read(int idx);
void amu_group1_cnt_write(int idx, uint64_t val);
void amu_group1_set_evtype(int idx, unsigned int val);
#endif /* __AMU_H__ */