mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-25 22:35:42 +00:00
b053a22e8a
STM32MP1 chip embeds a dual Cortex-A7 and a Cortex-M4. The support for Cortex-M4 clocks is added when configuring the clock tree. Some minimal security features to allow communications between A7 and M4 are also added. Change-Id: I60417e244a476f60a2758f4969700b2684056665 Signed-off-by: Yann Gautier <yann.gautier@st.com>
106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/*
|
|
* Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <platform_def.h>
|
|
|
|
#include <common/debug.h>
|
|
#include <drivers/arm/tzc400.h>
|
|
#include <drivers/st/stm32mp1_clk.h>
|
|
#include <dt-bindings/clock/stm32mp1-clks.h>
|
|
#include <lib/mmio.h>
|
|
|
|
/*******************************************************************************
|
|
* Initialize the TrustZone Controller. Configure Region 0 with Secure RW access
|
|
* and allow Non-Secure masters full access.
|
|
******************************************************************************/
|
|
static void init_tzc400(void)
|
|
{
|
|
unsigned long long region_base, region_top;
|
|
unsigned long long ddr_base = STM32MP_DDR_BASE;
|
|
unsigned long long ddr_size = (unsigned long long)dt_get_ddr_size();
|
|
|
|
tzc400_init(STM32MP1_TZC_BASE);
|
|
|
|
tzc400_disable_filters();
|
|
|
|
/* Region 1 set to cover all DRAM at 0xC000_0000. Apply the
|
|
* same configuration to all filters in the TZC.
|
|
*/
|
|
region_base = ddr_base;
|
|
region_top = ddr_base + (ddr_size - 1U);
|
|
tzc400_configure_region(STM32MP1_FILTER_BIT_ALL, 1,
|
|
region_base,
|
|
region_top,
|
|
TZC_REGION_S_RDWR,
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_A7_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_GPU_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_LCD_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_MDMA_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_M4_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_DMA_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_USB_HOST_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_USB_OTG_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_SDMMC_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_ETH_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_DAP_ID));
|
|
|
|
/* Raise an exception if a NS device tries to access secure memory */
|
|
tzc400_set_action(TZC_ACTION_ERR);
|
|
|
|
tzc400_enable_filters();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Initialize the TrustZone Controller.
|
|
* Early initialization create only one region with full access to secure.
|
|
* This setting is used before and during DDR initialization.
|
|
******************************************************************************/
|
|
static void early_init_tzc400(void)
|
|
{
|
|
stm32mp_clk_enable(TZC1);
|
|
stm32mp_clk_enable(TZC2);
|
|
|
|
tzc400_init(STM32MP1_TZC_BASE);
|
|
|
|
tzc400_disable_filters();
|
|
|
|
/*
|
|
* Region 1 set to cover Non-Secure DRAM at 0x8000_0000. Apply the
|
|
* same configuration to all filters in the TZC.
|
|
*/
|
|
tzc400_configure_region(STM32MP1_FILTER_BIT_ALL, 1,
|
|
STM32MP_DDR_BASE,
|
|
STM32MP_DDR_BASE +
|
|
(STM32MP_DDR_MAX_SIZE - 1U),
|
|
TZC_REGION_S_RDWR,
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_A7_ID) |
|
|
TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_SDMMC_ID));
|
|
|
|
/* Raise an exception if a NS device tries to access secure memory */
|
|
tzc400_set_action(TZC_ACTION_ERR);
|
|
|
|
tzc400_enable_filters();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Initialize the secure environment. At this moment only the TrustZone
|
|
* Controller is initialized.
|
|
******************************************************************************/
|
|
void stm32mp1_arch_security_setup(void)
|
|
{
|
|
early_init_tzc400();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Initialize the secure environment. At this moment only the TrustZone
|
|
* Controller is initialized.
|
|
******************************************************************************/
|
|
void stm32mp1_security_setup(void)
|
|
{
|
|
init_tzc400();
|
|
}
|