87798f9e16
Following the binding rename to "nxp,sysmpu", update the Kconfig option to align with the binding name and to better reflect the option's purpose. Signed-off-by: Manuel Argüelles <manuel.arguelles@nxp.com>
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation.
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* Copyright (c) 2022, NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/sys/printk.h>
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#include <zephyr/ztest.h>
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/* This function will allow execute from sram region.
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* This is needed only for this sample because by default all soc will
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* disable the execute from SRAM.
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* An application that requires that the code be executed from SRAM will
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* have to configure the region appropriately in arm_mpu_regions.c.
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*/
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#if (defined(CONFIG_ARM_MPU) && !defined(CONFIG_CPU_HAS_NXP_SYSMPU))
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#include <cmsis_core.h>
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void disable_mpu_rasr_xn(void)
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{
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uint32_t index;
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/* Kept the max index as 8(irrespective of soc) because the sram
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* would most likely be set at index 2.
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*/
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for (index = 0U; index < 8; index++) {
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MPU->RNR = index;
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#if defined(CONFIG_ARMV8_M_BASELINE) || defined(CONFIG_ARMV8_M_MAINLINE)
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if (MPU->RBAR & MPU_RBAR_XN_Msk) {
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MPU->RBAR ^= MPU_RBAR_XN_Msk;
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}
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#else
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if (MPU->RASR & MPU_RASR_XN_Msk) {
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MPU->RASR ^= MPU_RASR_XN_Msk;
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}
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#endif /* CONFIG_ARMV8_M_BASELINE || CONFIG_ARMV8_M_MAINLINE */
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}
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}
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#endif /* CONFIG_ARM_MPU */
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/* override the default memcpy as zephyr will call this before relocation happens */
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__boot_func
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void z_early_memcpy(void *dst, const void *src, size_t n)
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{
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/* attempt word-sized copying only if buffers have identical alignment */
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unsigned char *d_byte = (unsigned char *)dst;
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const unsigned char *s_byte = (const unsigned char *)src;
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/* do byte-sized copying until finished */
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while (n > 0) {
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*(d_byte++) = *(s_byte++);
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n--;
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}
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}
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__boot_func
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void z_early_memset(void *dst, int c, size_t n)
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{
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/* do byte-sized initialization until word-aligned or finished */
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unsigned char *d_byte = (unsigned char *)dst;
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unsigned char c_byte = (unsigned char)c;
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while (n > 0) {
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*(d_byte++) = c_byte;
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n--;
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}
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}
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void *relocate_code_setup(void)
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{
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#if (defined(CONFIG_ARM_MPU) && !defined(CONFIG_CPU_HAS_NXP_SYSMPU))
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disable_mpu_rasr_xn();
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#endif /* CONFIG_ARM_MPU */
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return NULL;
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}
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ZTEST_SUITE(code_relocation, NULL, relocate_code_setup, NULL, NULL, NULL);
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