mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 14:00:19 +00:00
c729fb258a
MPU's region setup can be factorized between STM32F4/F7/H7 SoCs family and used a common MPU's region config. Only one exception for STM32H7 which doesn't have device area located at 0xA000 0000. For STM32F4, configure_clocks() need to be moved from arch_cpu_init() to board_early_init_f(). Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
|
|
* Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/armv7m_mpu.h>
|
|
|
|
int arch_cpu_init(void)
|
|
{
|
|
int i;
|
|
|
|
struct mpu_region_config stm32_region_config[] = {
|
|
/*
|
|
* Make all 4GB cacheable & executable. We are overriding it
|
|
* with next region for any requirement. e.g. below region1,
|
|
* 2 etc.
|
|
* In other words, the area not coming in following
|
|
* regions configuration is the one configured here in region_0
|
|
* (cacheable & executable).
|
|
*/
|
|
{ 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
|
|
O_I_WB_RD_WR_ALLOC, REGION_4GB },
|
|
|
|
/* armv7m code area */
|
|
{ 0x00000000, REGION_1, XN_DIS, PRIV_RW_USR_RW,
|
|
STRONG_ORDER, REGION_512MB },
|
|
|
|
/* Device area : Not executable */
|
|
{ 0x40000000, REGION_2, XN_EN, PRIV_RW_USR_RW,
|
|
DEVICE_NON_SHARED, REGION_512MB },
|
|
|
|
/*
|
|
* Armv7m fixed configuration: strongly ordered & not
|
|
* executable, not cacheable
|
|
*/
|
|
{ 0xE0000000, REGION_3, XN_EN, PRIV_RW_USR_RW,
|
|
STRONG_ORDER, REGION_512MB },
|
|
|
|
#if !defined(CONFIG_STM32H7)
|
|
/* Device area : Not executable */
|
|
{ 0xA0000000, REGION_4, XN_EN, PRIV_RW_USR_RW,
|
|
DEVICE_NON_SHARED, 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;
|
|
}
|