summaryrefslogtreecommitdiff
path: root/arch/arm/mach-stm32/soc.c
blob: 2b528545306fa403021fdf6dc368f8827f371eeb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
// 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 <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_16MB },
#endif

#if defined(CONFIG_STM32F7)
		{ 0xC0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
		O_I_WB_RD_WR_ALLOC, REGION_16MB },
#endif

#if defined(CONFIG_STM32H7)
		{ 0xD0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
		O_I_WB_RD_WR_ALLOC, REGION_32MB },
#endif
	};

	disable_mpu();
	for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++)
		mpu_config(&stm32_region_config[i]);
	enable_mpu();

	return 0;
}