blob: 70637d648ce3bc3d0c659c8792251c60ec387b2b [file] [log] [blame]
/*
* Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <mmio.h>
#include <nic_400.h>
#include <plat_arm.h>
#include <soc_css.h>
#include "juno_def.h"
/*******************************************************************************
* Set up the MMU-401 SSD tables. The power-on configuration has all stream IDs
* assigned to Non-Secure except some for the DMA-330. Assign those back to the
* Non-Secure world as well, otherwise EL1 may end up erroneously generating
* (untranslated) Secure transactions if it turns the SMMU on.
******************************************************************************/
static void init_mmu401(void)
{
uint32_t reg = mmio_read_32(MMU401_DMA330_BASE + MMU401_SSD_OFFSET);
reg |= 0x1FF;
mmio_write_32(MMU401_DMA330_BASE + MMU401_SSD_OFFSET, reg);
}
/*******************************************************************************
* Program CSS-NIC400 to allow non-secure access to some CSS regions.
******************************************************************************/
static void css_init_nic400(void)
{
/* Note: This is the NIC-400 device on the CSS */
mmio_write_32(PLAT_SOC_CSS_NIC400_BASE +
NIC400_ADDR_CTRL_SECURITY_REG(CSS_NIC400_SLAVE_BOOTSECURE),
~0);
}
/*******************************************************************************
* Initialize debug configuration.
******************************************************************************/
static void init_debug_cfg(void)
{
#if !DEBUG
/* Set internal drive selection for SPIDEN. */
mmio_write_32(SSC_REG_BASE + SSC_DBGCFG_SET,
1U << SPIDEN_SEL_SET_SHIFT);
/* Drive SPIDEN LOW to disable invasive debug of secure state. */
mmio_write_32(SSC_REG_BASE + SSC_DBGCFG_CLR,
1U << SPIDEN_INT_CLR_SHIFT);
#endif
}
/*******************************************************************************
* Initialize the secure environment.
******************************************************************************/
void plat_arm_security_setup(void)
{
/* Initialize debug configuration */
init_debug_cfg();
/* Initialize the TrustZone Controller */
arm_tzc400_setup();
/* Do ARM CSS internal NIC setup */
css_init_nic400();
/* Do ARM CSS SoC security setup */
soc_css_security_setup();
/* Initialize the SMMU SSD tables */
init_mmu401();
}