#include <common.h>
#include <asm/io.h>
-#include <asm/armv7m.h>
+#include <asm/armv7m_mpu.h>
#include <asm/arch/stm32.h>
u32 get_cpu_rev(void)
int arch_cpu_init(void)
{
- configure_clocks();
+ int i;
- /*
- * Configure the memory protection unit (MPU)
- * 0x00000000 - 0xffffffff: Strong-order, Shareable
- * 0xC0000000 - 0xC0800000: Normal, Outer and inner Non-cacheable
- */
+ struct mpu_region_config stm32_region_config[] = {
+ { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
+ O_I_WB_RD_WR_ALLOC, REGION_4GB },
- /* Disable MPU */
- writel(0, &V7M_MPU->ctrl);
+ { 0x00000000, REGION_1, XN_DIS, PRIV_RW_USR_RW,
+ STRONG_ORDER, REGION_512MB },
- writel(
- 0x00000000 /* address */
- | 1 << 4 /* VALID */
- | 0 << 0 /* REGION */
- , &V7M_MPU->rbar
- );
+ { 0x40000000, REGION_2, XN_EN, PRIV_RW_USR_RW,
+ DEVICE_NON_SHARED, REGION_512MB },
- /* Strong-order, Shareable */
- /* TEX=000, S=1, C=0, B=0*/
- writel(
- (V7M_MPU_RASR_XN_ENABLE
- | V7M_MPU_RASR_AP_RW_RW
- | 0x01 << V7M_MPU_RASR_S_SHIFT
- | 0x00 << V7M_MPU_RASR_TEX_SHIFT
- | V7M_MPU_RASR_SIZE_4GB
- | V7M_MPU_RASR_EN)
- , &V7M_MPU->rasr
- );
+ { 0xA0000000, REGION_3, XN_EN, PRIV_RW_USR_RW,
+ DEVICE_NON_SHARED, REGION_512MB },
- writel(
- 0xC0000000 /* address */
- | 1 << 4 /* VALID */
- | 1 << 0 /* REGION */
- , &V7M_MPU->rbar
- );
+ { 0xE0000000, REGION_4, XN_EN, PRIV_RW_USR_RW,
+ STRONG_ORDER, REGION_512MB },
+ };
- /* Normal, Outer and inner Non-cacheable */
- /* TEX=001, S=0, C=0, B=0*/
- writel(
- (V7M_MPU_RASR_XN_ENABLE
- | V7M_MPU_RASR_AP_RW_RW
- | 0x01 << V7M_MPU_RASR_TEX_SHIFT
- | V7M_MPU_RASR_SIZE_8MB
- | V7M_MPU_RASR_EN)
- , &V7M_MPU->rasr
- );
-
- /* Enable MPU */
- writel(V7M_MPU_CTRL_ENABLE | V7M_MPU_CTRL_HFNMIENA, &V7M_MPU->ctrl);
+ disable_mpu();
+ for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++)
+ mpu_config(&stm32_region_config[i]);
+ enable_mpu();
return 0;
}