78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
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/*
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* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <endian.h>
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#include <platform_def.h>
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#include <common/debug.h>
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#include <lib/mmio.h>
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#include "soc_tzasc.h"
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int tzc380_set_region(unsigned int tzasc_base, unsigned int region_id,
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unsigned int enabled, unsigned int low_addr,
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unsigned int high_addr, unsigned int size,
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unsigned int security, unsigned int subreg_disable_mask)
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{
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unsigned int reg;
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unsigned int reg_base;
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unsigned int attr_value;
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reg_base = (tzasc_base + TZASC_REGIONS_REG + (region_id << 4));
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if (region_id == 0) {
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reg = (reg_base + TZASC_REGION_ATTR_OFFSET);
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mmio_write_32((uintptr_t)reg, ((security & 0xF) << 28));
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} else {
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reg = reg_base + TZASC_REGION_LOWADDR_OFFSET;
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mmio_write_32((uintptr_t)reg,
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(low_addr & TZASC_REGION_LOWADDR_MASK));
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reg = reg_base + TZASC_REGION_HIGHADDR_OFFSET;
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mmio_write_32((uintptr_t)reg, high_addr);
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reg = reg_base + TZASC_REGION_ATTR_OFFSET;
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attr_value = ((security & 0xF) << 28) |
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((subreg_disable_mask & 0xFF) << 8) |
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((size & 0x3F) << 1) | (enabled & 0x1);
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mmio_write_32((uintptr_t)reg, attr_value);
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}
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return 0;
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}
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int tzc380_setup(void)
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{
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int reg_id = 0;
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INFO("Configuring TZASC-380\n");
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/*
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* Configure CCI control override register to terminate all barrier
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* transactions
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*/
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mmio_write_32(PLAT_LS1043_CCI_BASE, CCI_TERMINATE_BARRIER_TX);
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/* Configure CSU secure access register to disable TZASC bypass mux */
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mmio_write_32((uintptr_t)(CONFIG_SYS_FSL_CSU_ADDR +
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CSU_SEC_ACCESS_REG_OFFSET),
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bswap32(TZASC_BYPASS_MUX_DISABLE));
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for (reg_id = 0; reg_id < MAX_NUM_TZC_REGION; reg_id++) {
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tzc380_set_region(CONFIG_SYS_FSL_TZASC_ADDR,
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reg_id,
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tzc380_reg_list[reg_id].enabled,
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tzc380_reg_list[reg_id].low_addr,
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tzc380_reg_list[reg_id].high_addr,
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tzc380_reg_list[reg_id].size,
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tzc380_reg_list[reg_id].secure,
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tzc380_reg_list[reg_id].sub_mask);
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}
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return 0;
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}
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