u-boot/arch/arm/mach-stm32/stm32f7/soc.c
Vikas Manocha 624b7101ee stm32f7: configure mpu valid for f7 family
This configuration should be valid for all F7 family devices in general.
Here is the regions info:

	- Region0 : 4GB	  : cacheable & executable.
	- Region1 : 512MB : text area	: strogly ordered & executable.
	- Region2 : 512MB : peripherals : device memory & non-executable.
	- Region3 : 512MB : peripherals : device memory & non-executable.
	- Region4 : 512MB : cortexM area: strongly ordered & non-executable.

Higher region number overrides the lower region configuration.

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
2017-05-12 08:37:08 -04:00

47 lines
919 B
C

/*
* (C) Copyright 2015
* Kamil Lulko, <kamil.lulko@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/armv7m_mpu.h>
#include <asm/arch/stm32.h>
u32 get_cpu_rev(void)
{
return 0;
}
int arch_cpu_init(void)
{
struct mpu_region_config stm32_region_config[] = {
{ 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
O_I_WB_RD_WR_ALLOC, REGION_4GB },
{ 0x00000000, REGION_1, XN_DIS, PRIV_RW_USR_RW,
STRONG_ORDER, REGION_512MB },
{ 0x40000000, REGION_2, XN_EN, PRIV_RW_USR_RW,
DEVICE_NON_SHARED, REGION_512MB },
{ 0xA0000000, REGION_3, XN_EN, PRIV_RW_USR_RW,
DEVICE_NON_SHARED, REGION_512MB },
{ 0xE0000000, REGION_4, XN_EN, PRIV_RW_USR_RW,
STRONG_ORDER, REGION_512MB },
};
disable_mpu();
for (int i = 0; i < ARRAY_SIZE(stm32_region_config); i++)
mpu_config(&stm32_region_config[i]);
enable_mpu();
return 0;
}
void s_init(void)
{
}