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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2019
- * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
- */
- #include <common.h>
- #include <init.h>
- #include <asm/io.h>
- #include <asm/armv7_mpu.h>
- int arch_cpu_init(void)
- {
- int i;
- struct mpu_region_config imxrt1050_region_config[] = {
- { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
- STRONG_ORDER, REGION_4GB },
- { PHYS_SDRAM, REGION_1, XN_DIS, PRIV_RW_USR_RW,
- O_I_WB_RD_WR_ALLOC, (ffs(PHYS_SDRAM_SIZE) - 2) },
- { DMAMEM_BASE,
- REGION_2, XN_DIS, PRIV_RW_USR_RW,
- STRONG_ORDER, (ffs(DMAMEM_SZ_ALL) - 2) },
- };
- /*
- * Configure the memory protection unit (MPU) to allow full access to
- * the whole 4GB address space.
- */
- disable_mpu();
- for (i = 0; i < ARRAY_SIZE(imxrt1050_region_config); i++)
- mpu_config(&imxrt1050_region_config[i]);
- enable_mpu();
- return 0;
- }
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