From 3286d223fd715a79accfc66039f3f6f52e9a8896 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Wed, 9 Dec 2020 19:42:44 +0100
Subject: sandbox: implement invalidate_icache_all()

Before executing code that we have loaded from a file we need to flush the
data cache and invalidate the instruction flash.

Implement functions flush_cache() and invalidate_icache_all().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 arch/sandbox/cpu/cache.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 arch/sandbox/cpu/cache.c

(limited to 'arch/sandbox/cpu/cache.c')

diff --git a/arch/sandbox/cpu/cache.c b/arch/sandbox/cpu/cache.c
new file mode 100644
index 00000000000..46c62c0b446
--- /dev/null
+++ b/arch/sandbox/cpu/cache.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <asm/state.h>
+
+void flush_cache(unsigned long addr, unsigned long size)
+{
+	/* Clang uses (char *) parameters, GCC (void *) */
+	__builtin___clear_cache((void *)addr, (void *)(addr + size));
+}
+
+void invalidate_icache_all(void)
+{
+	struct sandbox_state *state = state_get_current();
+
+	/* Clang uses (char *) parameters, GCC (void *) */
+	__builtin___clear_cache((void *)state->ram_buf,
+				(void *)(state->ram_buf + state->ram_size));
+}
-- 
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