3 * Kamil Lulko, <kamil.lulko@gmail.com>
5 * SPDX-License-Identifier: GPL-2.0+
10 #include <asm/armv7m.h>
11 #include <asm/arch/stm32.h>
18 int arch_cpu_init(void)
23 * Configure the memory protection unit (MPU) to allow full access to
24 * the whole 4GB address space.
26 writel(0, &V7M_MPU->rnr);
27 writel(0, &V7M_MPU->rbar);
28 writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB
29 | V7M_MPU_RASR_EN), &V7M_MPU->rasr);
30 writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl);