arch/arm/cpu/armv7m/stm32f4/soc.c

   1 /*
   2  * (C) Copyright 2015
   3  * Kamil Lulko, <rev13@wp.pl>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/armv7m.h>
  11 #include <asm/arch/stm32.h>
  12
  13 u32 get_cpu_rev(void)
  14 {
  15         return 0;
  16 }
  17
  18 int arch_cpu_init(void)
  19 {
  20         configure_clocks();
  21
  22         /*
  23          * Configure the memory protection unit (MPU) to allow full access to
  24          * the whole 4GB address space.
  25          */
  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);
  31
  32         return 0;
  33 }
  34
  35 void s_init(void)
  36 {
  37 }