mirror of https://github.com/wolfSSL/wolfBoot.git
47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/* imx_rt.h
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*
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* Support routines for the i.MX RT HAL, kept free of NXP MCUXpresso SDK
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* dependencies so they can be exercised directly in the host unit tests.
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*
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* Copyright (C) 2026 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifndef IMX_RT_H
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#define IMX_RT_H
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#include <stdint.h>
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/* Flash is memory mapped, so after a program/erase, the affected range must
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* be invalidated in the data cache to ensure coherency. The cache line size
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* is 32 bytes, so both the address and length passed to
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* DCACHE_InvalidateByRange() must be 32-byte aligned: the address is rounded
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* down, and the length is rounded up by the same down-alignment offset plus
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* "len", so that the invalidated range always fully covers
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* [address, address + len). */
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static inline void hal_flash_cache_align_range(uint32_t address, uint32_t len,
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uint32_t *aligned_address, uint32_t *aligned_len)
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{
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uint32_t start = address - (address % 32);
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uint32_t unaligned_len = len + (address - start);
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*aligned_address = start;
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*aligned_len = unaligned_len + ((32 - (unaligned_len % 32)) % 32);
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}
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#endif /* IMX_RT_H */
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