diff options
Diffstat (limited to 'bsps/sparc/leon3/include/bsp/leon3.h')
-rw-r--r-- | bsps/sparc/leon3/include/bsp/leon3.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/bsps/sparc/leon3/include/bsp/leon3.h b/bsps/sparc/leon3/include/bsp/leon3.h index 623cbe5912..daa3f43591 100644 --- a/bsps/sparc/leon3/include/bsp/leon3.h +++ b/bsps/sparc/leon3/include/bsp/leon3.h @@ -61,6 +61,105 @@ extern "C" { extern uint32_t LEON3_Cpu_Index; /** + * @brief This constant represents the flush instruction cache flag of the LEON + * cache control register. + */ +#define LEON3_REG_CACHE_CTRL_FI 0x00200000U + +/** + * @brief This constant represents the data cache snooping enable flag of the + * LEON cache control register. + */ +#define LEON3_REG_CACHE_CTRL_DS 0x00800000U + +/** + * @brief Sets the ASI 0x2 system register value. + * + * @param addr is the address of the ASI 0x2 system register. + * + * @param val is the value to set. + */ +static inline void leon3_set_system_register( uint32_t addr, uint32_t val ) +{ + __asm__ volatile( + "sta %1, [%0] 2" + : + : "r" ( addr ), "r" ( val ) + ); +} + +/** + * @brief Gets the ASI 0x2 system register value. + * + * @param addr is the address of the ASI 0x2 system register. + * + * @return Returns the register value. + */ +static inline uint32_t leon3_get_system_register( uint32_t addr ) +{ + uint32_t val; + + __asm__ volatile( + "lda [%1] 2, %0" + : "=r" ( val ) + : "r" ( addr ) + ); + + return val; +} + +/** + * @brief Sets the LEON cache control register value. + * + * @param val is the value to set. + */ +static inline void leon3_set_cache_control_register( uint32_t val ) +{ + leon3_set_system_register( 0x0, val ); +} + +/** + * @brief Gets the LEON cache control register value. + * + * @return Returns the register value. + */ +static inline uint32_t leon3_get_cache_control_register( void ) +{ + return leon3_get_system_register( 0x0 ); +} + +/** + * @brief Checks if the data cache snooping is enabled. + * + * @return Returns true, if the data cache snooping is enabled, otherwise + * false. + */ +static inline bool leon3_data_cache_snooping_enabled( void ) +{ + return ( leon3_get_cache_control_register() & LEON3_REG_CACHE_CTRL_DS ) != 0; +} + +/** + * @brief Gets the LEON instruction cache configuration register value. + * + * @return Returns the register value. + */ +static inline uint32_t leon3_get_inst_cache_config_register( void ) +{ + return leon3_get_system_register( 0x8 ); +} + +/** + * @brief Gets the LEON data cache configuration register value. + * + * @return Returns the register value. + */ +static inline uint32_t leon3_get_data_cache_config_register( void ) +{ + return leon3_get_system_register( 0xc ); +} + +/** * @brief This lock serializes the interrupt controller access. */ extern rtems_interrupt_lock LEON3_IrqCtrl_Lock; |