From 33b78476d2bfd2660e376ea743bff5dc210971ca Mon Sep 17 00:00:00 2001 From: Vikas Manocha Date: Wed, 3 May 2017 16:38:56 -0700 Subject: stm32: use armv7m MPU configuration support Signed-off-by: Vikas Manocha --- arch/arm/mach-stm32/stm32f4/soc.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'arch/arm/mach-stm32/stm32f4') diff --git a/arch/arm/mach-stm32/stm32f4/soc.c b/arch/arm/mach-stm32/stm32f4/soc.c index b5d06dbe833..3f45a25cea4 100644 --- a/arch/arm/mach-stm32/stm32f4/soc.c +++ b/arch/arm/mach-stm32/stm32f4/soc.c @@ -7,7 +7,7 @@ #include #include -#include +#include #include u32 get_cpu_rev(void) @@ -17,17 +17,19 @@ u32 get_cpu_rev(void) int arch_cpu_init(void) { + struct mpu_region_config stm32_region_config[] = { + { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, + STRONG_ORDER, REGION_4GB }, + }; configure_clocks(); - /* * Configure the memory protection unit (MPU) to allow full access to * the whole 4GB address space. */ - writel(0, &V7M_MPU->rnr); - writel(0, &V7M_MPU->rbar); - writel((V7M_MPU_RASR_AP_RW_RW | V7M_MPU_RASR_SIZE_4GB - | V7M_MPU_RASR_EN), &V7M_MPU->rasr); - writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl); + disable_mpu(); + for (int i = 0; i < ARRAY_SIZE(stm32_region_config); i++) + mpu_config(&stm32_region_config[i]); + enable_mpu(); return 0; } -- cgit v1.2.3