Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / lib / cache.c

diff --git a/qemu/roms/u-boot/arch/arm/lib/cache.c b/qemu/roms/u-boot/arch/arm/lib/cache.c
new file mode 100644 (file)
index 0000000..6cc136a
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/lib/cache.c
@@ -0,0 +1,51 @@
+/*
+ * (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 */
+
+#include <common.h>
+
+void  __flush_cache(unsigned long start, unsigned long size)
+{
+#if defined(CONFIG_ARM1136)
+       void arm1136_cache_flush(void);
+
+       arm1136_cache_flush();
+#endif
+#ifdef CONFIG_ARM926EJS
+       /* test and clean, page 2-23 of arm926ejs manual */
+       asm("0: mrc p15, 0, r15, c7, c10, 3\n\t" "bne 0b\n" : : : "memory");
+       /* disable write buffer as well (page 2-22) */
+       asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
+#endif
+       return;
+}
+void  flush_cache(unsigned long start, unsigned long size)
+       __attribute__((weak, alias("__flush_cache")));
+
+/*
+ * Default implementation:
+ * do a range flush for the entire range
+ */
+void   __flush_dcache_all(void)
+{
+       flush_cache(0, ~0);
+}
+void   flush_dcache_all(void)
+       __attribute__((weak, alias("__flush_dcache_all")));
+
+
+/*
+ * Default implementation of enable_caches()
+ * Real implementation should be in platform code
+ */
+void __enable_caches(void)
+{
+       puts("WARNING: Caches not enabled\n");
+}
+void enable_caches(void)
+       __attribute__((weak, alias("__enable_caches")));