From f67f1c87185d12efd0b971b41898052eb2115472 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Tue, 23 Apr 2024 21:06:52 +0200 Subject: [PATCH] arm: Add arm_cp15_data_cache_all_invalidate() Update #4982. --- cpukit/score/cpu/arm/include/libcpu/arm-cp15.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/cpukit/score/cpu/arm/include/libcpu/arm-cp15.h b/cpukit/score/cpu/arm/include/libcpu/arm-cp15.h index c239eaccc8..4a5ddb561e 100644 --- a/cpukit/score/cpu/arm/include/libcpu/arm-cp15.h +++ b/cpukit/score/cpu/arm/include/libcpu/arm-cp15.h @@ -2371,6 +2371,23 @@ arm_cp15_set_diagnostic_control(uint32_t val) ); } +/* This is probably a Cortex-R5 specific operation */ +ARM_CP15_TEXT_SECTION static inline void +arm_cp15_data_cache_all_invalidate(void) +{ + ARM_SWITCH_REGISTERS; + uint32_t sbz = 0; + + __asm__ volatile ( + ARM_SWITCH_TO_ARM + "mcr p15, 0, %[sbz], c15, c5, 0\n" + ARM_SWITCH_BACK + : ARM_SWITCH_OUTPUT + : [sbz] "r" (sbz) + : "memory" + ); +} + /** * @brief Sets the @a section_flags for the address range [@a begin, @a end). *