diff options
Diffstat (limited to 'c/src/lib/libcpu/arm/shared/include/arm-cp15.h')
| -rw-r--r-- | c/src/lib/libcpu/arm/shared/include/arm-cp15.h | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/c/src/lib/libcpu/arm/shared/include/arm-cp15.h b/c/src/lib/libcpu/arm/shared/include/arm-cp15.h index 8357656bd8..ca7a11e673 100644 --- a/c/src/lib/libcpu/arm/shared/include/arm-cp15.h +++ b/c/src/lib/libcpu/arm/shared/include/arm-cp15.h @@ -210,6 +210,18 @@ extern "C" { /** @} */ +/** + * @name CCSIDR, Cache Size ID Register Defines + * + * @{ + */ + +#define ARM_CP15_CACHE_CSS_ID_DATA 0 +#define ARM_CP15_CACHE_CSS_ID_INSTRUCTION 1 +#define ARM_CP15_CACHE_CSS_LEVEL(level) ((level) << 1) + +/** @} */ + ARM_CP15_TEXT_SECTION static inline uint32_t arm_cp15_get_id_code(void) { @@ -819,6 +831,21 @@ arm_cp15_set_cache_size_selection(uint32_t val) ); } +ARM_CP15_TEXT_SECTION static inline uint32_t +arm_cp15_get_cache_size_id_for_level(uint32_t level_and_inst_dat) +{ + rtems_interrupt_level irq_level; + uint32_t ccsidr; + + rtems_interrupt_local_disable(irq_level); + arm_cp15_set_cache_size_selection(level_and_inst_dat); + _ARM_Instruction_synchronization_barrier(); + ccsidr = arm_cp15_get_cache_size_id(); + rtems_interrupt_local_enable(irq_level); + + return ccsidr; +} + ARM_CP15_TEXT_SECTION static inline void arm_cp15_cache_invalidate(void) { @@ -1036,10 +1063,8 @@ arm_cp15_data_cache_invalidate_all_levels(void) uint32_t way; uint32_t way_shift; - arm_cp15_set_cache_size_selection(level << 1); - _ARM_Instruction_synchronization_barrier(); + ccsidr = arm_cp15_get_cache_size_id_for_level(level << 1); - ccsidr = arm_cp15_get_cache_size_id(); line_power = arm_ccsidr_get_line_power(ccsidr); associativity = arm_ccsidr_get_associativity(ccsidr); way_shift = __builtin_clz(associativity - 1); |