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@@ -0,0 +1,37 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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+/*
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+ * Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
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+ */
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+
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+#include <common.h>
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+#include <cpu_func.h>
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+#include <asm/armv7.h>
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+#include <asm/pl310.h>
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+
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+#define PL310_WAY_MASK 0xff
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+
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+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
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+void enable_caches(void)
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+{
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+ /* Enable D-cache. I-cache is already enabled in start.S */
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+ dcache_enable();
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+}
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+#endif
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+
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+#ifdef CONFIG_SYS_L2_PL310
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+void v7_outer_cache_disable(void)
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+{
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+ struct pl310_regs *const pl310 = (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
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+
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+ /*
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+ * Linux expects the L2 cache to be turned off by the bootloader.
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+ * Otherwise, it fails very early (shortly after decompressing the kernel).
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+ *
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+ * On U8500, the L2 cache can be only turned on/off from the secure world.
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+ * Instead, prevent usage of the L2 cache by locking all ways.
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+ * The kernel needs to unlock them to make the L2 cache work again.
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+ */
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+ writel(PL310_WAY_MASK, &pl310->pl310_lockdown_dbase);
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+ writel(PL310_WAY_MASK, &pl310->pl310_lockdown_ibase);
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+}
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+#endif
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