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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-01-21 10:53:16 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-01-21 13:25:07 +0100 |
| commit | 370cdefdbc03a23631988911b4a8e525ed4e4b7c (patch) | |
| tree | 621c0bc60b455d9187a801aaba3725c8c9a9b348 /cpukit/score/cpu/arm/rtems | |
| parent | mips/hurricane: Add per-section compilation and linking support. (diff) | |
| download | rtems-370cdefdbc03a23631988911b4a8e525ed4e4b7c.tar.bz2 | |
arm: Use DWT CYCCNT for timecounter if available
Diffstat (limited to 'cpukit/score/cpu/arm/rtems')
| -rw-r--r-- | cpukit/score/cpu/arm/rtems/score/armv7m.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/cpukit/score/cpu/arm/rtems/score/armv7m.h b/cpukit/score/cpu/arm/rtems/score/armv7m.h index c5e473ec0a..251ecdce39 100644 --- a/cpukit/score/cpu/arm/rtems/score/armv7m.h +++ b/cpukit/score/cpu/arm/rtems/score/armv7m.h @@ -75,6 +75,30 @@ typedef struct { } ARMV7M_Exception_frame; typedef struct { + uint32_t comp; + uint32_t mask; + uint32_t function; + uint32_t reserved; +} ARMV7M_DWT_comparator; + +typedef struct { +#define ARMV7M_DWT_CTRL_NOCYCCNT (1U << 25) +#define ARMV7M_DWT_CTRL_CYCCNTENA (1U << 0) + uint32_t ctrl; + uint32_t cyccnt; + uint32_t cpicnt; + uint32_t exccnt; + uint32_t sleepcnt; + uint32_t lsucnt; + uint32_t foldcnt; + uint32_t pcsr; + ARMV7M_DWT_comparator comparator[249]; + uint32_t reserved_e0001fb0[1]; + uint32_t lar; + uint32_t lsr; +} ARMV7M_DWT; + +typedef struct { uint32_t cpuid; #define ARMV7M_SCB_ICSR_NMIPENDSET (1U << 31) @@ -323,6 +347,7 @@ typedef struct { 0 \ } +#define ARMV7M_DWT_BASE 0xe0001000 #define ARMV7M_SCS_BASE 0xe000e000 #define ARMV7M_ICTAC_BASE (ARMV7M_SCS_BASE + 0x0) #define ARMV7M_SYSTICK_BASE (ARMV7M_SCS_BASE + 0x10) @@ -330,6 +355,8 @@ typedef struct { #define ARMV7M_SCB_BASE (ARMV7M_SCS_BASE + 0xd00) #define ARMV7M_MPU_BASE (ARMV7M_SCS_BASE + 0xd90) +#define _ARMV7M_DWT \ + ((volatile ARMV7M_DWT *) ARMV7M_DWT_BASE) #define _ARMV7M_ICTAC \ ((volatile ARMV7M_ICTAC *) ARMV7M_ICTAC_BASE) #define _ARMV7M_SCB \ |