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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
* Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
*/
#include <common.h>
#include <init.h>
#include <asm/io.h>
#include <asm/armv7_mpu.h>
int arch_cpu_init(void)
{
int i;
struct mpu_region_config stm32_region_config[] = {
/*
* Make SDRAM area cacheable & executable.
*/
#if defined(CONFIG_STM32F4)
{ 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
O_I_WB_RD_WR_ALLOC, REGION_512MB },
#endif
{ 0x90000000, REGION_1, XN_DIS, PRIV_RW_USR_RW,
SHARED_WRITE_BUFFERED, REGION_256MB },
#if defined(CONFIG_STM32F7) || defined(CONFIG_STM32H7)
{ 0xC0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
O_I_WB_RD_WR_ALLOC, REGION_512MB },
#endif
};
disable_mpu();
for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++)
mpu_config(&stm32_region_config[i]);
enable_mpu();
return 0;
}
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