diff --git a/bsp/cvitek/c906_little/Kconfig b/bsp/cvitek/c906_little/Kconfig index 6e007eb2b88..62acab27636 100755 --- a/bsp/cvitek/c906_little/Kconfig +++ b/bsp/cvitek/c906_little/Kconfig @@ -14,6 +14,7 @@ config BSP_USING_C906_LITTLE bool select ARCH_RISCV64 select ARCH_RISCV_FPU_D + select RT_USING_CACHE select RT_USING_COMPONENTS_INIT select RT_USING_USER_MAIN default y diff --git a/bsp/cvitek/c906_little/board/cache.c b/bsp/cvitek/c906_little/board/cache.c new file mode 100644 index 00000000000..5dfed9ec58d --- /dev/null +++ b/bsp/cvitek/c906_little/board/cache.c @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2006-2024, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2024/11/27 zdtyuiop4444 Add Icache operation + * 2024/11/26 zdtyuiop4444 The first version + */ + +#include "cache.h" + +inline void rt_hw_cpu_dcache_enable(void) +{ + asm volatile("csrs mhcr, %0;" ::"rI"(0x2)); +} + +inline void rt_hw_cpu_dcache_disable(void) +{ + asm volatile("csrc mhcr, %0;" ::"rI"(0x2)); +} + +inline void inv_dcache_range(uintptr_t start, size_t size) { + CACHE_OP_RANGE(DCACHE_IPA_A0, start, size); +} + +inline void inv_icache_range(uintptr_t start, size_t size) { + CACHE_OP_RANGE(ICACHE_IPA_A0, start, size); +} + +inline void flush_dcache_range(uintptr_t start, size_t size) { + CACHE_OP_RANGE(DCACHE_CIPA_A0, start, size); +} + +inline void rt_hw_cpu_dcache_ops(int ops, void* addr, int size) +{ + switch (ops) + { + case RT_HW_CACHE_FLUSH: + flush_dcache_range(addr, size); + break; + case RT_HW_CACHE_INVALIDATE: + inv_dcache_range(addr, size); + break; + default: + break; + } +} + +inline void rt_hw_cpu_icache_enable(void) +{ + asm volatile("csrs mhcr, %0;" ::"rI"(0x1)); +} + +inline void rt_hw_cpu_icache_disable(void) +{ + asm volatile("csrc mhcr, %0;" ::"rI"(0x1)); +} + +inline void rt_hw_cpu_icache_ops(int ops, void* addr, int size) +{ + switch (ops) + { + case RT_HW_CACHE_INVALIDATE: + inv_icache_range(addr, size); + break; + default: + break; + } +} diff --git a/bsp/cvitek/c906_little/board/cache.h b/bsp/cvitek/c906_little/board/cache.h new file mode 100644 index 00000000000..21c752acbc7 --- /dev/null +++ b/bsp/cvitek/c906_little/board/cache.h @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2006-2024, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2024/11/27 zdtyuiop4444 Add Icache operation + * 2024/11/26 zdtyuiop4444 The first version + */ + +#ifndef __CACHE_H__ +#define __CACHE_H__ + +#include + +#define L1_CACHE_BYTES 64 +#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1)) + +/* + * dcache.ipa rs1 (invalidate) + * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 | + * 0000001 01010 rs1 000 00000 0001011 + * + * dcache.cpa rs1 (clean) + * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 | + * 0000001 01001 rs1 000 00000 0001011 + * + * dcache.cipa rs1 (clean then invalidate) + * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 | + * 0000001 01011 rs1 000 00000 0001011 + * + * icache.ipa rs1 (invalidate) + * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 | + * 0000001 11000 rs1 000 00000 0001011 + * + * sync.s + * | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 | + * 0000000 11001 00000 000 00000 0001011 + */ +#define DCACHE_IPA_A0 ".long 0x02a5000b" +#define DCACHE_CPA_A0 ".long 0x0295000b" +#define DCACHE_CIPA_A0 ".long 0x02b5000b" +#define ICACHE_IPA_A0 ".long 0x0385000b" + +#define SYNC_S ".long 0x0190000b" + +#define CACHE_OP_RANGE(OP, start, size) \ + register unsigned long i asm("a0") = start & ~(L1_CACHE_BYTES - 1); \ + for (; i < ALIGN(start + size, L1_CACHE_BYTES); i += L1_CACHE_BYTES) \ + __asm__ __volatile__(OP); \ + __asm__ __volatile__(SYNC_S) + +#endif /* __CACHE_H__ */ diff --git a/bsp/cvitek/c906_little/rtconfig.h b/bsp/cvitek/c906_little/rtconfig.h index 17188652203..4537761c405 100755 --- a/bsp/cvitek/c906_little/rtconfig.h +++ b/bsp/cvitek/c906_little/rtconfig.h @@ -56,6 +56,7 @@ #define RT_BACKTRACE_LEVEL_MAX_NR 32 /* end of RT-Thread Kernel */ #define ARCH_CPU_64BIT +#define RT_USING_CACHE #define ARCH_RISCV #define ARCH_RISCV_FPU #define ARCH_RISCV_FPU_D