tzpc.c 962 Bytes
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/*
 * Lowlevel setup for SMDK5250 board based on S5PC520
 *
 * Copyright (C) 2012 Samsung Electronics
 *
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 * SPDX-License-Identifier:	GPL-2.0+
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 */

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#include <common.h>
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#include <asm/arch/tzpc.h>
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#include <asm/io.h>
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/* Setting TZPC[TrustZone Protection Controller] */
void tzpc_init(void)
{
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	struct exynos_tzpc *tzpc;
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	unsigned int addr, start = 0, end = 0;
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	start = samsung_get_base_tzpc();

	if (cpu_is_exynos5())
		end = start + ((EXYNOS5_NR_TZPC_BANKS - 1) * TZPC_BASE_OFFSET);
	else if (cpu_is_exynos4())
		end = start + ((EXYNOS4_NR_TZPC_BANKS - 1) * TZPC_BASE_OFFSET);

	for (addr = start; addr <= end; addr += TZPC_BASE_OFFSET) {
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		tzpc = (struct exynos_tzpc *)addr;
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		if (addr == start)
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			writel(R0SIZE, &tzpc->r0size);

		writel(DECPROTXSET, &tzpc->decprot0set);
		writel(DECPROTXSET, &tzpc->decprot1set);

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		if (cpu_is_exynos5() && (addr == end))
			break;

		writel(DECPROTXSET, &tzpc->decprot2set);
		writel(DECPROTXSET, &tzpc->decprot3set);
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	}
}