diff options
| -rw-r--r-- | c/src/lib/libcpu/arm/shared/include/arm-cp15.h | 48 |
1 files changed, 48 insertions, 0 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 76b05822cd..4c1966d7ff 100644 --- a/c/src/lib/libcpu/arm/shared/include/arm-cp15.h +++ b/c/src/lib/libcpu/arm/shared/include/arm-cp15.h @@ -358,6 +358,37 @@ arm_cp15_set_translation_table_base(uint32_t *base) ); } +/* Translation Table Base Control Register - DDI0301H arm1176jzfs TRM 3.2.15 */ +ARM_CP15_TEXT_SECTION static inline uint32_t +*arm_cp15_get_translation_table_base_control_register(void) +{ + ARM_SWITCH_REGISTERS; + uint32_t ttb_cr; + + __asm__ volatile ( + ARM_SWITCH_TO_ARM + "mrc p15, 0, %[ttb_cr], c2, c0, 2\n" + ARM_SWITCH_BACK + : [ttb_cr] "=&r" (ttb_cr) ARM_SWITCH_ADDITIONAL_OUTPUT + ); + + return ttb_cr; +} + +ARM_CP15_TEXT_SECTION static inline void +arm_cp15_set_translation_table_base_control_register(uint32_t ttb_cr) +{ + ARM_SWITCH_REGISTERS; + + __asm__ volatile ( + ARM_SWITCH_TO_ARM + "mcr p15, 0, %[ttb_cr], c2, c0, 2\n" + ARM_SWITCH_BACK + : ARM_SWITCH_OUTPUT + : [ttb_cr] "r" (ttb_cr) + ); +} + ARM_CP15_TEXT_SECTION static inline uint32_t arm_cp15_get_domain_access_control(void) { @@ -858,6 +889,23 @@ arm_cp15_branch_predictor_invalidate_all(void) ); } +/* Flush Prefetch Buffer - DDI0301H arm1176jzfs TRM 3.2.22 */ +ARM_CP15_TEXT_SECTION static inline void +arm_cp15_flush_prefetch_buffer(void) +{ + ARM_SWITCH_REGISTERS; + uint32_t sbz = 0; + + __asm__ volatile ( + ARM_SWITCH_TO_ARM + "mcr p15, 0, %[sbz], c7, c5, 4\n" + ARM_SWITCH_BACK + : ARM_SWITCH_OUTPUT + : [sbz] "r" (sbz) + : "memory" + ); +} + ARM_CP15_TEXT_SECTION static inline void arm_cp15_instruction_cache_invalidate(void) { |