3 * Kamil Lulko, <rev13@wp.pl>
5 * Copyright 2015 ATS Advanced Telematics Systems GmbH
6 * Copyright 2015 Konsulko Group, Matt Porter <mporter@konsulko.com>
8 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/armv7m.h>
14 #include <asm/arch/stm32.h>
21 int arch_cpu_init(void)
26 * Configure the memory protection unit (MPU) to allow full access to
27 * the whole 4GB address space.
29 writel(0, &V7M_MPU->rnr);
30 writel(0, &V7M_MPU->rbar);
31 writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB
32 | V7M_MPU_RASR_EN), &V7M_MPU->rasr);
33 writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl);