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Atmel provided hardware specifics.
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Richard Barry
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228
Demo/Common/drivers/Atmel/at91lib/peripherals/eefc/eefc.c
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228
Demo/Common/drivers/Atmel/at91lib/peripherals/eefc/eefc.c
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/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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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
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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#ifndef trace_LEVEL
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#define trace_LEVEL trace_INFO
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#endif
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//------------------------------------------------------------------------------
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// Headers
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//------------------------------------------------------------------------------
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#include "eefc.h"
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#ifdef BOARD_FLASH_EEFC
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#include <utility/assert.h>
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#include <utility/trace.h>
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//------------------------------------------------------------------------------
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// Global functions
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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/// Enables the flash ready interrupt source on the EEFC peripheral.
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//------------------------------------------------------------------------------
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void EFC_EnableFrdyIt(void)
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{
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AT91C_BASE_EFC->EFC_FMR |= AT91C_EFC_FRDY;
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}
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//------------------------------------------------------------------------------
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/// Disables the flash ready interrupt source on the EEFC peripheral.
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//------------------------------------------------------------------------------
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void EFC_DisableFrdyIt(void)
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{
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AT91C_BASE_EFC->EFC_FMR &= ~AT91C_EFC_FRDY;
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}
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//------------------------------------------------------------------------------
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/// Translates the given address page and offset values. The resulting
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/// values are stored in the provided variables if they are not null.
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/// \param address Address to translate.
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/// \param pPage First page accessed.
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/// \param pOffset Byte offset in first page.
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//------------------------------------------------------------------------------
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void EFC_TranslateAddress(
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unsigned int address,
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unsigned short *pPage,
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unsigned short *pOffset)
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{
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unsigned short page;
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unsigned short offset;
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SANITY_CHECK(address >= AT91C_IFLASH);
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SANITY_CHECK(address <= (AT91C_IFLASH + AT91C_IFLASH_SIZE));
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// Calculate page & offset
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page = (address - AT91C_IFLASH) / AT91C_IFLASH_PAGE_SIZE;
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offset = (address - AT91C_IFLASH) % AT91C_IFLASH_PAGE_SIZE;
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trace_LOG(trace_DEBUG,
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"-D- Translated 0x%08X to page=%d and offset=%d\n\r",
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address, page, offset);
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// Store values
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if (pPage) {
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*pPage = page;
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}
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if (pOffset) {
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*pOffset = offset;
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}
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}
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//------------------------------------------------------------------------------
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/// Computes the address of a flash access given the page and offset.
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/// \param page Page number.
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/// \param offset Byte offset inside page.
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/// \param pAddress Computed address (optional).
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//------------------------------------------------------------------------------
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void EFC_ComputeAddress(
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unsigned short page,
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unsigned short offset,
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unsigned int *pAddress)
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{
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unsigned int address;
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SANITY_CHECK(page <= AT91C_IFLASH_NB_OF_PAGES);
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SANITY_CHECK(offset < AT91C_IFLASH_PAGE_SIZE);
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// Compute address
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address = AT91C_IFLASH + page * AT91C_IFLASH_PAGE_SIZE + offset;
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// Store result
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if (pAddress) {
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*pAddress = address;
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}
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}
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//------------------------------------------------------------------------------
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/// Starts the executing the given command on the EEFC. This function returns
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/// as soon as the command is started. It does NOT set the FMCN field automatically.
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/// \param command Command to execute.
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/// \param argument Command argument (should be 0 if not used).
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//------------------------------------------------------------------------------
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void EFC_StartCommand(unsigned char command, unsigned short argument)
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{
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// Check command & argument
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switch (command) {
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case AT91C_EFC_FCMD_WP:
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case AT91C_EFC_FCMD_WPL:
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case AT91C_EFC_FCMD_EWP:
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case AT91C_EFC_FCMD_EWPL:
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case AT91C_EFC_FCMD_EPL:
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case AT91C_EFC_FCMD_EPA:
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case AT91C_EFC_FCMD_SLB:
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case AT91C_EFC_FCMD_CLB:
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ASSERT(argument < AT91C_IFLASH_NB_OF_PAGES,
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"-F- Embedded flash has only %d pages\n\r",
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AT91C_IFLASH_NB_OF_PAGES);
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break;
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case AT91C_EFC_FCMD_SFB:
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case AT91C_EFC_FCMD_CFB:
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ASSERT(argument < EFC_NUM_GPNVMS, "-F- Embedded flash has only %d GPNVMs\n\r", EFC_NUM_GPNVMS);
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break;
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case AT91C_EFC_FCMD_GETD:
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case AT91C_EFC_FCMD_EA:
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case AT91C_EFC_FCMD_GLB:
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case AT91C_EFC_FCMD_GFB:
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ASSERT(argument == 0, "-F- Argument is meaningless for the given command.\n\r");
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break;
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default: ASSERT(0, "-F- Unknown command %d\n\r", command);
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}
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// Start commandEmbedded flash
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ASSERT((AT91C_BASE_EFC->EFC_FSR & AT91C_EFC_FRDY) == AT91C_EFC_FRDY, "-F- EEFC is not ready\n\r");
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AT91C_BASE_EFC->EFC_FCR = (0x5A << 24) | (argument << 8) | command;
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}
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//------------------------------------------------------------------------------
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/// Performs the given command and wait until its completion (or an error).
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/// Returns 0 if successful; otherwise returns an error code.
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/// \param command Command to perform.
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/// \param argument Optional command argument.
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//------------------------------------------------------------------------------
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#ifdef __ICCARM__
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__ramfunc
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#else
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__attribute__ ((section (".ramfunc")))
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#endif
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unsigned char EFC_PerformCommand(unsigned char command, unsigned short argument)
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{
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unsigned int status;
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#ifdef BOARD_FLASH_IAP_ADDRESS
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// Pointer on IAP function in ROM
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static void (*IAP_PerformCommand)(unsigned int);
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IAP_PerformCommand = (void (*)(unsigned int)) *((unsigned int *) BOARD_FLASH_IAP_ADDRESS);
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// Check if IAP function is implemented (opcode in SWI != 'b' or 'ldr') */
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if ((((((unsigned long) IAP_PerformCommand >> 24) & 0xFF) != 0xEA) &&
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(((unsigned long) IAP_PerformCommand >> 24) & 0xFF) != 0xE5)) {
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IAP_PerformCommand((0x5A << 24) | (argument << 8) | command);
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return (AT91C_BASE_EFC->EFC_FSR & (AT91C_EFC_LOCKE | AT91C_EFC_FCMDE));
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}
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#endif
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AT91C_BASE_EFC->EFC_FCR = (0x5A << 24) | (argument << 8) | command;
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do {
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status = AT91C_BASE_EFC->EFC_FSR;
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}
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while ((status & AT91C_EFC_FRDY) != AT91C_EFC_FRDY);
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return (status & (AT91C_EFC_LOCKE | AT91C_EFC_FCMDE));
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}
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//------------------------------------------------------------------------------
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/// Returns the current status of the EEFC. Keep in mind that this function clears
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/// the value of some status bits (LOCKE, PROGE).
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//------------------------------------------------------------------------------
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unsigned int EFC_GetStatus(void)
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{
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return AT91C_BASE_EFC->EFC_FSR;
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}
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//------------------------------------------------------------------------------
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/// Returns the result of the last executed command.
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//------------------------------------------------------------------------------
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unsigned int EFC_GetResult(void) {
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return AT91C_BASE_EFC->EFC_FRR;
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}
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#endif //#ifdef BOARD_FLASH_EEFC
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133
Demo/Common/drivers/Atmel/at91lib/peripherals/eefc/eefc.h
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133
Demo/Common/drivers/Atmel/at91lib/peripherals/eefc/eefc.h
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@ -0,0 +1,133 @@
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/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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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
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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#ifndef EEFC_H
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#define EEFC_H
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//------------------------------------------------------------------------------
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// Headers
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//------------------------------------------------------------------------------
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#include <board.h>
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#ifdef BOARD_FLASH_EEFC
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//------------------------------------------------------------------------------
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// Constants
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//------------------------------------------------------------------------------
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/// Number of GPNVMs available on each chip.
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#if defined(at91sam7l64) || defined(at91sam7l128)
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#define EFC_NUM_GPNVMS 2
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#elif defined(at91sam9xe128) || defined(at91sam9xe256) || defined(at91sam9xe512)
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#define EFC_NUM_GPNVMS 17
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#endif
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//------------------------------------------------------------------------------
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// Types
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//------------------------------------------------------------------------------
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// Needed when EEFC is integrated in MC.
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#if !defined(AT91C_BASE_EFC) && defined(AT91C_BASE_MC)
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typedef struct _AT91S_EFC {
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AT91_REG EFC_FMR; // EFC Flash Mode Register
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AT91_REG EFC_FCR; // EFC Flash Command Register
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AT91_REG EFC_FSR; // EFC Flash Status Register
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AT91_REG EFC_FRR; // EFC Flash Result Register
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AT91_REG EFC_FVR; // EFC Flash Version Register
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} AT91S_EFC, *AT91PS_EFC;
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#define AT91C_EFC_FRDY AT91C_MC_FRDY
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#define AT91C_EFC_FWS AT91C_MC_FWS
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#define AT91C_EFC_FWS_0WS AT91C_MC_FWS_0WS
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#define AT91C_EFC_FWS_1WS AT91C_MC_FWS_1WS
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#define AT91C_EFC_FWS_2WS AT91C_MC_FWS_2WS
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#define AT91C_EFC_FWS_3WS AT91C_MC_FWS_3WS
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#define AT91C_EFC_FCMD AT91C_MC_FCMD
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#define AT91C_EFC_FCMD_GETD AT91C_MC_FCMD_GETD
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#define AT91C_EFC_FCMD_WP AT91C_MC_FCMD_WP
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#define AT91C_EFC_FCMD_WPL AT91C_MC_FCMD_WPL
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#define AT91C_EFC_FCMD_EWP AT91C_MC_FCMD_EWP
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#define AT91C_EFC_FCMD_EWPL AT91C_MC_FCMD_EWPL
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#define AT91C_EFC_FCMD_EA AT91C_MC_FCMD_EA
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#define AT91C_EFC_FCMD_EPL AT91C_MC_FCMD_EPL
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#define AT91C_EFC_FCMD_EPA AT91C_MC_FCMD_EPA
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#define AT91C_EFC_FCMD_SLB AT91C_MC_FCMD_SLB
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#define AT91C_EFC_FCMD_CLB AT91C_MC_FCMD_CLB
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#define AT91C_EFC_FCMD_GLB AT91C_MC_FCMD_GLB
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#define AT91C_EFC_FCMD_SFB AT91C_MC_FCMD_SFB
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#define AT91C_EFC_FCMD_CFB AT91C_MC_FCMD_CFB
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#define AT91C_EFC_FCMD_GFB AT91C_MC_FCMD_GFB
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#define AT91C_EFC_FARG AT91C_MC_FARG
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#define AT91C_EFC_FKEY AT91C_MC_FKEY
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#define AT91C_EFC_FRDY_S AT91C_MC_FRDY_S
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#define AT91C_EFC_FCMDE AT91C_MC_FCMDE
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#define AT91C_EFC_LOCKE AT91C_MC_LOCKE
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#define AT91C_EFC_FVALUE AT91C_MC_FVALUE
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#define AT91C_BASE_EFC (AT91_CAST(AT91PS_EFC) 0xFFFFFF60)
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#endif //#if !defined(AT91C_BASE_EFC) && defined(AT91C_BASE_MC)
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//------------------------------------------------------------------------------
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// Functions
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//------------------------------------------------------------------------------
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extern void EFC_EnableFrdyIt(void);
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extern void EFC_DisableFrdyIt(void);
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extern void EFC_TranslateAddress(
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unsigned int address,
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unsigned short *pPage,
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unsigned short *pOffset);
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extern void EFC_ComputeAddress(
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unsigned short page,
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unsigned short offset,
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unsigned int *pAddress);
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extern void EFC_StartCommand(
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unsigned char command,
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unsigned short argument);
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extern unsigned char EFC_PerformCommand(
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unsigned char command,
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unsigned short argument);
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extern unsigned int EFC_GetStatus(void);
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extern unsigned int EFC_GetResult(void);
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#endif //#ifdef BOARD_FLASH_EEFC
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#endif //#ifndef EEFC_H
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