SPDX: Convert all of our single license tags to Linux Kernel style

[u-boot] / arch / arm / lib / cache.c

diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c
index cd13db3440ddf783e0cb8089e4cd5724a90e7831..565fbbe1097460617609fc8ef17bc159ec75968e 100644 (file)
--- a/arch/arm/lib/cache.c
+++ b/arch/arm/lib/cache.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 /* for now: just dummy functions to satisfy the linker */
@@ -46,6 +45,24 @@ __weak void flush_dcache_range(unsigned long start, unsigned long stop)
        /* An empty stub, real implementation should be in platform code */
 }
 
+int check_cache_range(unsigned long start, unsigned long stop)
+{
+       int ok = 1;
+
+       if (start & (CONFIG_SYS_CACHELINE_SIZE - 1))
+               ok = 0;
+
+       if (stop & (CONFIG_SYS_CACHELINE_SIZE - 1))
+               ok = 0;
+
+       if (!ok) {
+               warn_non_spl("CACHE: Misaligned operation at range [%08lx, %08lx]\n",
+                            start, stop);
+       }
+
+       return ok;
+}
+
 #ifdef CONFIG_SYS_NONCACHED_MEMORY
 /*
  * Reserve one MMU section worth of address space below the malloc() area that
@@ -88,3 +105,14 @@ phys_addr_t noncached_alloc(size_t size, size_t align)
        return next;
 }
 #endif /* CONFIG_SYS_NONCACHED_MEMORY */
+
+#if CONFIG_IS_ENABLED(SYS_THUMB_BUILD)
+void invalidate_l2_cache(void)
+{
+       unsigned int val = 0;
+
+       asm volatile("mcr p15, 1, %0, c15, c11, 0 @ invl l2 cache"
+               : : "r" (val) : "cc");
+       isb();
+}
+#endif