513 lines
18 KiB
C
513 lines
18 KiB
C
/**
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* @file xmc4_flash.c
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* @date 2016-01-08
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*
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* @cond
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*********************************************************************************************************************
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* XMClib v2.1.12 - XMC Peripheral Driver Library
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*
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* Copyright (c) 2015-2017, Infineon Technologies AG
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,are permitted provided that the
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* following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided with the distribution.
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*
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* Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* To improve the quality of the software, users are encouraged to share modifications, enhancements or bug fixes with
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* Infineon Technologies AG dave@infineon.com).
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*********************************************************************************************************************
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*
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* Change History
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* --------------
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*
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* 2015-02-10:
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* - Initial <br>
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*
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* 2015-06-20:
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* - Removed definition of GetDriverVersion API
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*
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* 2015-08-17:
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* - Added the below API's to the public interface.
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* 1. XMC_FLASH_Reset
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* 2. XMC_FLASH_ErasePhysicalSector
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* 3. XMC_FLASH_EraseUCB
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* 4. XMC_FLASH_ResumeProtection
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* 5. XMC_FLASH_RepairPhysicalSector
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*
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* 2016-01-08:
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* - Wait until operation is finished for the next functions:
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* 1. XMC_FLASH_InstallProtection
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* 2. XMC_FLASH_ConfirmProtection
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* 3. XMC_FLASH_ProgramPage
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* 4. XMC_FLASH_EraseSector
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* 5. XMC_FLASH_ErasePhysicalSector
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* 6. XMC_FLASH_EraseUCB
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* - Fix XMC_FLASH_VerifyReadProtection and XMC_FLASH_VerifyWriteProtection
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*
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* @endcond
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*
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*/
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#include "xmc_flash.h"
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#if UC_FAMILY == XMC4
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/*********************************************************************************************************************
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* MACROS
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********************************************************************************************************************/
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#define XMC_FLASH_PROTECTION_CONFIGURATION_WORDS (8UL) /* Used to upadte the assembly buffer during protection
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configuration */
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#define XMC_FLASH_PROT_CONFIRM_OFFSET (512UL) /* Offset address for UCB page */
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#define XMC_FLASH_PROT_CONFIRM_WORDS (4UL)
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#define XMC_FLASH_PROT_CONFIRM_CODE (0x8AFE15C3UL)
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/*********************************************************************************************************************
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* LOCAL FUNCTIONS
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********************************************************************************************************************/
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void XMC_FLASH_lEnterPageModeCommand(void);
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void XMC_FLASH_lLoadPageCommand(uint32_t low_word, uint32_t high_word);
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void XMC_FLASH_lWritePageCommand(uint32_t *page_start_address);
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void XMC_FLASH_lWriteUCBPageCommand(uint32_t *page_start_address);
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void XMC_FLASH_lEraseSectorCommand(uint32_t *sector_start_address);
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void XMC_FLASH_lDisableSectorWriteProtectionCommand(uint32_t user, uint32_t password_0, uint32_t password_1);
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void XMC_FLASH_lDisableReadProtectionCommand(uint32_t password_0, uint32_t password_1);
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void XMC_FLASH_lRepairPhysicalSectorCommand(void);
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void XMC_FLASH_lErasePhysicalSectorCommand(uint32_t *sector_start_address);
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void XMC_FLASH_lClearStatusCommand(void);
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/*
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* Command to program the PFLASH in to page mode, so that assembly buffer is used
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*/
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void XMC_FLASH_lEnterPageModeCommand(void)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = (uint32_t)0x50U;
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}
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/*
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* Command to load the data into the page assembly buffer
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*/
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void XMC_FLASH_lLoadPageCommand(uint32_t low_word, uint32_t high_word)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x55f0U);
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*address = low_word;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x55f4U);
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*address = high_word;
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}
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/*
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* Command to start the programming of one page with data from the assembly buffer
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*/
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void XMC_FLASH_lWritePageCommand(uint32_t *page_start_address)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xa0U;
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address = page_start_address;
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*address = 0xaaU;
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}
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/*
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* Command to start the programming of UCB page with data from the assembly buffer
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*/
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void XMC_FLASH_lWriteUCBPageCommand(uint32_t *page_start_address)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xc0U;
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address = page_start_address;
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*address = 0xaaU;
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}
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/*
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* Command to erase sector which is starting with the specified address
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*/
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void XMC_FLASH_lEraseSectorCommand(uint32_t *sector_start_address)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0x80U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = sector_start_address;
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*address = 0x30U;
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}
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/*
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* Command to temporarily disables the write protection belonging to the the USER specified, when passwords match with their
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* configured values
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*/
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void XMC_FLASH_lDisableSectorWriteProtectionCommand(uint32_t user, uint32_t password_0, uint32_t password_1)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x553cU);
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*address = user;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = password_0;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = password_1;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5558U);
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*address = 0x05U;
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}
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/*
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* Command to temporarily disables the read protection along with write protection, when passwords match with their
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* configured values
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*/
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void XMC_FLASH_lDisableReadProtectionCommand(uint32_t password_0, uint32_t password_1)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x553cU);
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*address = 0x00U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = password_0;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = password_1;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5558U);
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*address = 0x08U;
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}
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/*
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* Command to clear FSR.PROG and FSR.ERASE and the error flags in FSR such as PFOPER, SQER, PROER, PFDBER, ORIER, VER
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*/
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void XMC_FLASH_lClearStatusCommand(void)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xf5U;
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}
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/*********************************************************************************************************************
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* API IMPLEMENTATION
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********************************************************************************************************************/
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/*
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* This API shall clear Program, erase and error flags(PFOPER, SQER, PROER, PFDBER, ORIER, VER) of FSR register.
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*/
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void XMC_FLASH_ClearStatus(void)
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{
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XMC_FLASH_lClearStatusCommand();
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}
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/*
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* This API returns the FSR register value
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*/
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uint32_t XMC_FLASH_GetStatus(void)
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{
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return FLASH0->FSR;
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}
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/*
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* This API enables the events which required to trigger the ISR
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*/
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void XMC_FLASH_EnableEvent(const uint32_t event_msk)
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{
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FLASH0->FCON |= event_msk;
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}
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/*
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* This API disables the event generation
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*/
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void XMC_FLASH_DisableEvent(const uint32_t event_msk)
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{
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FLASH0->FCON &= ~event_msk;
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}
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/*
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* This API write the PFLASH page
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*/
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void XMC_FLASH_ProgramPage(uint32_t *address, const uint32_t *data)
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{
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uint32_t idx;
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XMC_FLASH_lClearStatusCommand();
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XMC_FLASH_lEnterPageModeCommand();
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for (idx = 0U; idx < XMC_FLASH_WORDS_PER_PAGE; idx += 2U)
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{
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XMC_FLASH_lLoadPageCommand(data[idx], data[idx + 1U]);
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}
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XMC_FLASH_lWritePageCommand(address);
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/* wait until the operation is completed */
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while ((FLASH0->FSR & (uint32_t)FLASH_FSR_PBUSY_Msk) != 0U){}
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}
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/*
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* This API erase the logical sector
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*/
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void XMC_FLASH_EraseSector(uint32_t *address)
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{
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XMC_FLASH_lClearStatusCommand();
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XMC_FLASH_lEraseSectorCommand(address);
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/* wait until the operation is completed */
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while ((FLASH0->FSR & (uint32_t)FLASH_FSR_PBUSY_Msk) != 0U){}
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}
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/*
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* Command to erase physical sector which is starting with the specified address
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*/
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void XMC_FLASH_lErasePhysicalSectorCommand(uint32_t *sector_start_address)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0x80U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = sector_start_address;
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*address = 0x40U;
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}
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/*
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* Command to erase physical sector-4 which is starting with the specified address
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* This command is only available if PROCON1.PRS = 1.
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*/
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void XMC_FLASH_lRepairPhysicalSectorCommand(void)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0x80U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = XMC_FLASH_PHY_SECTOR_4;
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*address = 0x40U;
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}
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/*
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* This API erase the physical sector
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*/
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void XMC_FLASH_ErasePhysicalSector(uint32_t *address)
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{
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XMC_FLASH_lClearStatusCommand();
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XMC_FLASH_lErasePhysicalSectorCommand(address);
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/* wait until the operation is completed */
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while ((FLASH0->FSR & (uint32_t)FLASH_FSR_PBUSY_Msk) != 0U){}
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}
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/*
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* This API repair the physical sector
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*/
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void XMC_FLASH_RepairPhysicalSector(void)
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{
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XMC_FLASH_lClearStatusCommand();
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XMC_FLASH_lRepairPhysicalSectorCommand();
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}
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/*
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* Command to erase UCB sector which is starting with the specified address
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*/
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void XMC_FLASH_EraseUCB(uint32_t *ucb_sector_start_address)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0x80U;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xaaU;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0xaaa8U);
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*address = 0x55U;
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address = ucb_sector_start_address;
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*address = 0xc0U;
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/* wait until the operation is completed */
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while ((FLASH0->FSR & (uint32_t)FLASH_FSR_PBUSY_Msk) != 0U){}
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}
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/*
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* Command to reset the status of the PFLASH
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*/
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void XMC_FLASH_Reset(void)
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{
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volatile uint32_t *address;
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address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
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*address = 0xf0U;
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}
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/*
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* This API install the global read and sector write protection for the specified user
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*/
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void XMC_FLASH_InstallProtection(uint8_t user,
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uint32_t protection_mask,
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uint32_t password_0,
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uint32_t password_1)
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{
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uint32_t idx;
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XMC_ASSERT(" XMC_FLASH_ConfigureProtection: User level out of range", (user < 3U))
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XMC_FLASH_lEnterPageModeCommand();
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XMC_FLASH_lLoadPageCommand(protection_mask, 0UL);
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XMC_FLASH_lLoadPageCommand(protection_mask, 0UL);
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XMC_FLASH_lLoadPageCommand(password_0, password_1);
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XMC_FLASH_lLoadPageCommand(password_0, password_1);
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for (idx = 0U; idx < (XMC_FLASH_WORDS_PER_PAGE - XMC_FLASH_PROTECTION_CONFIGURATION_WORDS); idx += 2U)
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{
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XMC_FLASH_lLoadPageCommand(0UL, 0UL);
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}
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XMC_FLASH_lWriteUCBPageCommand((uint32_t *)((uint32_t)XMC_FLASH_UCB0 + (user * XMC_FLASH_BYTES_PER_UCB)));
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/* wait until the operation is completed */
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while ((FLASH0->FSR & (uint32_t)FLASH_FSR_PBUSY_Msk) != 0U){}
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}
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/*
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* This API confirm the protection. So that This sectors are locked with the specified protection.
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*/
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void XMC_FLASH_ConfirmProtection(uint8_t user)
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{
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uint32_t idx;
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XMC_ASSERT(" XMC_FLASH_ConfirmProtection: User level out of range", (user < 3U))
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XMC_FLASH_lEnterPageModeCommand();
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XMC_FLASH_lLoadPageCommand(XMC_FLASH_PROT_CONFIRM_CODE, 0U);
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XMC_FLASH_lLoadPageCommand(XMC_FLASH_PROT_CONFIRM_CODE, 0U);
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/* Fill the rest of page buffer with zeros*/
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for (idx = 0UL; idx < (XMC_FLASH_WORDS_PER_PAGE - XMC_FLASH_PROT_CONFIRM_WORDS); idx += 2U)
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{
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XMC_FLASH_lLoadPageCommand(0UL, 0UL);
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}
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XMC_FLASH_lWriteUCBPageCommand((uint32_t *)((uint32_t)XMC_FLASH_UCB0 +
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(user * XMC_FLASH_BYTES_PER_UCB) + XMC_FLASH_PROT_CONFIRM_OFFSET));
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/* wait until the operation is completed */
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while ((FLASH0->FSR & (uint32_t)FLASH_FSR_PBUSY_Msk) != 0U){}
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}
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/*
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* This API verify read protection configuration. And returns true if passwords are matching.
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*/
|
|
bool XMC_FLASH_VerifyReadProtection(uint32_t password_0, uint32_t password_1)
|
|
{
|
|
bool status = false;
|
|
|
|
/* Check if read protection is installed */
|
|
if ((XMC_FLASH_GetStatus() & (uint32_t)XMC_FLASH_STATUS_READ_PROTECTION_INSTALLED) != 0U)
|
|
{
|
|
XMC_FLASH_lClearStatusCommand();
|
|
XMC_FLASH_lDisableReadProtectionCommand(password_0, password_1);
|
|
|
|
status = (bool)(XMC_FLASH_GetStatus() & (uint32_t)XMC_FLASH_STATUS_READ_PROTECTION_DISABLED_STATE);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* This API verify sector write protection configuration. And returns true if passwords are matching for the
|
|
* specified user.
|
|
*/
|
|
bool XMC_FLASH_VerifyWriteProtection(uint32_t user,
|
|
uint32_t protection_mask,
|
|
uint32_t password_0,
|
|
uint32_t password_1)
|
|
{
|
|
bool status = false;
|
|
uint32_t *flash_procon_ptr = (uint32_t *)(void*)(&(FLASH0->PROCON0) + user);
|
|
|
|
XMC_ASSERT(" XMC_FLASH_VerifyWriteProtection: User level out of range", (user < 2U))
|
|
|
|
/* Check if write protection for selected user is installed */
|
|
if ((XMC_FLASH_GetStatus() & (uint32_t)((uint32_t)1U << (uint32_t)((uint32_t)FLASH_FSR_WPROIN0_Pos + user))) != 0U)
|
|
{
|
|
XMC_FLASH_lClearStatusCommand();
|
|
XMC_FLASH_lDisableSectorWriteProtectionCommand(user, password_0, password_1);
|
|
|
|
status = (bool)((XMC_FLASH_GetStatus() & (uint32_t)((uint32_t)1U << (uint32_t)((uint32_t)FLASH_FSR_WPRODIS0_Pos + user)))) &&
|
|
(*flash_procon_ptr == (protection_mask & (uint32_t)(~(uint32_t)XMC_FLASH_PROTECTION_READ_GLOBAL)));
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Command to enables the protection as it was configured
|
|
*/
|
|
void XMC_FLASH_ResumeProtection(void)
|
|
{
|
|
volatile uint32_t *address;
|
|
|
|
address = (uint32_t *)(XMC_FLASH_UNCACHED_BASE + 0x5554U);
|
|
*address = 0x5eU;
|
|
}
|
|
|
|
#endif
|