1 // SPDX-License-Identifier: GPL-2.0+
4 * Ilya Yanok, EmCraft Systems
8 #include <linux/types.h>
11 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
12 void invalidate_dcache_all(void)
14 asm volatile("mcr p15, 0, %0, c7, c6, 0\n" : : "r"(0));
17 void flush_dcache_all(void)
21 "mrc p15, 0, r15, c7, c14, 3\n"
23 "mcr p15, 0, %0, c7, c10, 4\n"
28 void invalidate_dcache_range(unsigned long start, unsigned long stop)
30 if (!check_cache_range(start, stop))
33 while (start < stop) {
34 asm volatile("mcr p15, 0, %0, c7, c6, 1\n" : : "r"(start));
35 start += CONFIG_SYS_CACHELINE_SIZE;
39 void flush_dcache_range(unsigned long start, unsigned long stop)
41 if (!check_cache_range(start, stop))
44 while (start < stop) {
45 asm volatile("mcr p15, 0, %0, c7, c14, 1\n" : : "r"(start));
46 start += CONFIG_SYS_CACHELINE_SIZE;
49 asm volatile("mcr p15, 0, %0, c7, c10, 4\n" : : "r"(0));
51 #else /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
52 void invalidate_dcache_all(void)
56 void flush_dcache_all(void)
59 #endif /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
62 * Stub implementations for l2 cache operations
65 __weak void l2_cache_disable(void) {}
67 #if CONFIG_IS_ENABLED(SYS_THUMB_BUILD)
68 __weak void invalidate_l2_cache(void) {}
71 #if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
72 /* Invalidate entire I-cache and branch predictor array */
73 void invalidate_icache_all(void)
77 asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));
80 void invalidate_icache_all(void) {}
83 void enable_caches(void)
85 #if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
88 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)