LXR uboot/arch/arm/cpu/armv7/exynos/tzpc.c

   1/*
   2 * Lowlevel setup for SMDK5250 board based on S5PC520
   3 *
   4 * Copyright (C) 2012 Samsung Electronics
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8
   9#include <common.h>
  10#include <asm/arch/tzpc.h>
  11#include <asm/io.h>
  12
  13/* Setting TZPC[TrustZone Protection Controller] */
  14void tzpc_init(void)
  15{
  16        struct exynos_tzpc *tzpc;
  17        unsigned int addr, start = 0, end = 0;
  18
  19        start = samsung_get_base_tzpc();
  20
  21        if (cpu_is_exynos5())
  22                end = start + ((EXYNOS5_NR_TZPC_BANKS - 1) * TZPC_BASE_OFFSET);
  23        else if (cpu_is_exynos4())
  24                end = start + ((EXYNOS4_NR_TZPC_BANKS - 1) * TZPC_BASE_OFFSET);
  25
  26        for (addr = start; addr <= end; addr += TZPC_BASE_OFFSET) {
  27                tzpc = (struct exynos_tzpc *)addr;
  28
  29                if (addr == start)
  30                        writel(R0SIZE, &tzpc->r0size);
  31
  32                writel(DECPROTXSET, &tzpc->decprot0set);
  33                writel(DECPROTXSET, &tzpc->decprot1set);
  34
  35                if (cpu_is_exynos5() && (addr == end))
  36                        break;
  37
  38                writel(DECPROTXSET, &tzpc->decprot2set);
  39                writel(DECPROTXSET, &tzpc->decprot3set);
  40        }
  41}
  42