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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2011
- * Ilya Yanok, EmCraft Systems
- */
- #include <cpu_func.h>
- #include <linux/types.h>
- #include <common.h>
- #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
- void invalidate_dcache_all(void)
- {
- asm volatile("mcr p15, 0, %0, c7, c6, 0\n" : : "r"(0));
- }
- void flush_dcache_all(void)
- {
- asm volatile(
- "0:"
- "mrc p15, 0, r15, c7, c14, 3\n"
- "bne 0b\n"
- "mcr p15, 0, %0, c7, c10, 4\n"
- : : "r"(0) : "memory"
- );
- }
- void invalidate_dcache_range(unsigned long start, unsigned long stop)
- {
- if (!check_cache_range(start, stop))
- return;
- while (start < stop) {
- asm volatile("mcr p15, 0, %0, c7, c6, 1\n" : : "r"(start));
- start += CONFIG_SYS_CACHELINE_SIZE;
- }
- }
- void flush_dcache_range(unsigned long start, unsigned long stop)
- {
- if (!check_cache_range(start, stop))
- return;
- while (start < stop) {
- asm volatile("mcr p15, 0, %0, c7, c14, 1\n" : : "r"(start));
- start += CONFIG_SYS_CACHELINE_SIZE;
- }
- asm volatile("mcr p15, 0, %0, c7, c10, 4\n" : : "r"(0));
- }
- #else /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
- void invalidate_dcache_all(void)
- {
- }
- void flush_dcache_all(void)
- {
- }
- #endif /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
- /*
- * Stub implementations for l2 cache operations
- */
- __weak void l2_cache_disable(void) {}
- #if CONFIG_IS_ENABLED(SYS_THUMB_BUILD)
- __weak void invalidate_l2_cache(void) {}
- #endif
- #if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
- /* Invalidate entire I-cache and branch predictor array */
- void invalidate_icache_all(void)
- {
- unsigned long i = 0;
- asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));
- }
- #else
- void invalidate_icache_all(void) {}
- #endif
- void enable_caches(void)
- {
- #if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
- icache_enable();
- #endif
- #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
- dcache_enable();
- #endif
- }
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