mirror of https://github.com/wolfSSL/wolfBoot.git
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/* stm32_tz.h
|
|
*
|
|
* Copyright (C) 2024 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfBoot.
|
|
*
|
|
* wolfBoot is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfBoot is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
#ifndef STM32_TZ_INCLUDED
|
|
#define STM32_TZ_INCLUDED
|
|
#include <stdint.h>
|
|
|
|
/* SAU registers, used to define memory mapped regions */
|
|
#define SAU_CTRL (*(volatile uint32_t *)(0xE000EDD0))
|
|
#define SAU_RNR (*(volatile uint32_t *)(0xE000EDD8)) /** SAU_RNR - region number register **/
|
|
#define SAU_RBAR (*(volatile uint32_t *)(0xE000EDDC)) /** SAU_RBAR - region base address register **/
|
|
#define SAU_RLAR (*(volatile uint32_t *)(0xE000EDE0)) /** SAU_RLAR - region limit address register **/
|
|
|
|
#define SAU_REGION_MASK 0x000000FF
|
|
#define SAU_ADDR_MASK 0xFFFFFFE0 /* LS 5 bit are reserved or used for flags */
|
|
|
|
/* Flag for the SAU region limit register */
|
|
#define SAU_REG_ENABLE (1 << 0) /* Indicates that the region is enabled. */
|
|
#define SAU_REG_SECURE (1 << 1) /* When on, the region is S or NSC */
|
|
|
|
#define SAU_INIT_CTRL_ENABLE (1 << 0)
|
|
#define SAU_INIT_CTRL_ALLNS (1 << 1)
|
|
|
|
#define SCB_SHCSR (*(volatile uint32_t *)(0xE000ED24))
|
|
#define SCB_SHCSR_SECUREFAULT_EN (1<<19)
|
|
|
|
static inline void sau_init_region(uint32_t region, uint32_t start_addr,
|
|
uint32_t end_addr, int secure)
|
|
{
|
|
uint32_t secure_flag = 0;
|
|
if (secure)
|
|
secure_flag = SAU_REG_SECURE;
|
|
SAU_RNR = region & SAU_REGION_MASK;
|
|
SAU_RBAR = start_addr & SAU_ADDR_MASK;
|
|
SAU_RLAR = (end_addr & SAU_ADDR_MASK)
|
|
| secure_flag | SAU_REG_ENABLE;
|
|
}
|
|
|
|
#endif
|