47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
/*
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* \brief TrustZone specific functions for Versatile Express
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* \author Stefan Kalkowski
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* \date 2012-10-10
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*/
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/*
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* Copyright (C) 2012-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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/* core includes */
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#include <trustzone.h>
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#include <pic.h>
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#include <cpu.h>
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#include <csu.h>
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#include <board.h>
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/* monitor exception vector address */
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extern int _mon_kernel_entry;
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void Kernel::trustzone_initialization(Pic *pic)
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{
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/* set exception vector entry */
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Genode::Cpu::mon_exception_entry_at((Genode::addr_t)&_mon_kernel_entry);
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/* enable coprocessor access for TZ VMs */
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Genode::Cpu::allow_coprocessor_nonsecure();
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/* configure non-secure interrupts */
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for (unsigned i = 0; i <= Pic::MAX_INTERRUPT_ID; i++) {
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if ((i != Imx53::Board::EPIT_1_IRQ) &&
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(i != Imx53::Board::EPIT_2_IRQ) &&
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(i != Imx53::Board::I2C_2_IRQ) &&
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(i != Imx53::Board::I2C_3_IRQ) &&
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(i < Imx53::Board::GPIO1_IRQL || i > Imx53::Board::GPIO4_IRQH) &&
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(i < Imx53::Board::GPIO5_IRQL || i > Imx53::Board::GPIO7_IRQH))
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pic->unsecure(i);
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}
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/* configure central security unit */
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Genode::Csu csu(0x63f9c000);
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}
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