From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- peripherals/eefc/eefc.c | 296 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 296 insertions(+) create mode 100644 peripherals/eefc/eefc.c (limited to 'peripherals/eefc/eefc.c') diff --git a/peripherals/eefc/eefc.c b/peripherals/eefc/eefc.c new file mode 100644 index 0000000..506e016 --- /dev/null +++ b/peripherals/eefc/eefc.c @@ -0,0 +1,296 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2009, Atmel Corporation + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the disclaimer below. + * + * Atmel's name may not be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, + * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * ---------------------------------------------------------------------------- + */ + +//------------------------------------------------------------------------------ +// Headers +//------------------------------------------------------------------------------ + +#include +#include "eefc.h" + +#if !defined (CHIP_FLASH_EEFC) +#error eefc not supported +#endif + +#include +#include + +//------------------------------------------------------------------------------ +// Global functions +//------------------------------------------------------------------------------ + +//------------------------------------------------------------------------------ +/// Enables the flash ready interrupt source on the EEFC peripheral. +/// \param pEfc Pointer to an AT91S_EFC structure. +//------------------------------------------------------------------------------ +void EFC_EnableFrdyIt(AT91S_EFC *pEfc) +{ + pEfc->EFC_FMR |= AT91C_EFC_FRDY; +} + +//------------------------------------------------------------------------------ +/// Disables the flash ready interrupt source on the EEFC peripheral. +/// \param pEfc Pointer to an AT91S_EFC structure. +//------------------------------------------------------------------------------ +void EFC_DisableFrdyIt(AT91S_EFC *pEfc) +{ + pEfc->EFC_FMR &= ~AT91C_EFC_FRDY; +} + +//------------------------------------------------------------------------------ +/// Translates the given address page and offset values. The resulting +/// values are stored in the provided variables if they are not null. +/// \param ppEfc Pointer to target EFC peripheral. +/// \param address Address to translate. +/// \param pPage First page accessed. +/// \param pOffset Byte offset in first page. +//------------------------------------------------------------------------------ +void EFC_TranslateAddress( + AT91S_EFC **ppEfc, + unsigned int address, + unsigned short *pPage, + unsigned short *pOffset) +{ + AT91S_EFC *pEfc; + unsigned short page; + unsigned short offset; + +#if defined(AT91C_BASE_EFC1) + // Convert wrapped address to physical address. + address &= 0x19FFFF; + SANITY_CHECK(address >= AT91C_IFLASH); + if (address >= AT91C_IFLASH1) { + SANITY_CHECK(address <= (AT91C_IFLASH1 + AT91C_IFLASH1_SIZE)); + } + else { + SANITY_CHECK(address <= (AT91C_IFLASH + AT91C_IFLASH_SIZE)); + } +#else + SANITY_CHECK(address >= AT91C_IFLASH); + SANITY_CHECK(address <= (AT91C_IFLASH + AT91C_IFLASH_SIZE)); +#endif + + pEfc = AT91C_BASE_EFC; + page = (address - AT91C_IFLASH) / AT91C_IFLASH_PAGE_SIZE; + offset = (address - AT91C_IFLASH) % AT91C_IFLASH_PAGE_SIZE; + +#if defined(AT91C_BASE_EFC1) + if (address >= AT91C_IFLASH1) { + pEfc = AT91C_BASE_EFC1; + page = (address - AT91C_IFLASH1) / AT91C_IFLASH1_PAGE_SIZE; + offset = (address - AT91C_IFLASH1) % AT91C_IFLASH1_PAGE_SIZE; + } +#endif + + TRACE_DEBUG("Translated 0x%08X to page=%d and offset=%d\n\r", + address, page, offset); + + // Store values + if (ppEfc) { + *ppEfc = pEfc; + } + if (pPage) { + + *pPage = page; + } + if (pOffset) { + + *pOffset = offset; + } +} + +//------------------------------------------------------------------------------ +/// Computes the address of a flash access given the page and offset. +/// \param pEfc Pointer to an AT91S_EFC structure. +/// \param page Page number. +/// \param offset Byte offset inside page. +/// \param pAddress Computed address (optional). +//------------------------------------------------------------------------------ +void EFC_ComputeAddress( + AT91S_EFC *pEfc, + unsigned short page, + unsigned short offset, + unsigned int *pAddress) +{ + unsigned int address; + SANITY_CHECK(pEfc); + SANITY_CHECK(page <= AT91C_IFLASH_NB_OF_PAGES); + SANITY_CHECK(offset < AT91C_IFLASH_PAGE_SIZE); + + // Compute address + address = AT91C_IFLASH + page * AT91C_IFLASH_PAGE_SIZE + offset; +#if defined(AT91C_BASE_EFC1) + if (pEfc == AT91C_BASE_EFC1) { + address = AT91C_IFLASH1 + page * AT91C_IFLASH1_PAGE_SIZE + offset; + } +#endif + + // Store result + if (pAddress) { + + *pAddress = address; + } +} + +//------------------------------------------------------------------------------ +/// Starts the executing the given command on the EEFC. This function returns +/// as soon as the command is started. It does NOT set the FMCN field automatically. +/// \param pEfc Pointer to an AT91S_EFC structure. +/// \param command Command to execute. +/// \param argument Command argument (should be 0 if not used). +//------------------------------------------------------------------------------ +#if defined(flash) || defined (USE_FLASH) + #ifdef __ICCARM__ +__ramfunc + #else +__attribute__ ((section (".ramfunc"))) + #endif +#endif +void EFC_StartCommand(AT91S_EFC *pEfc, unsigned char command, unsigned short argument) +{ + // Check command & argument + switch (command) { + + case AT91C_EFC_FCMD_WP: + case AT91C_EFC_FCMD_WPL: + case AT91C_EFC_FCMD_EWP: + case AT91C_EFC_FCMD_EWPL: + case AT91C_EFC_FCMD_EPL: + case AT91C_EFC_FCMD_EPA: + case AT91C_EFC_FCMD_SLB: + case AT91C_EFC_FCMD_CLB: + ASSERT(argument < AT91C_IFLASH_NB_OF_PAGES, + "-F- Embedded flash has only %d pages\n\r", + AT91C_IFLASH_NB_OF_PAGES); + break; + + case AT91C_EFC_FCMD_SFB: + case AT91C_EFC_FCMD_CFB: + ASSERT(argument < CHIP_EFC_NUM_GPNVMS, "-F- Embedded flash has only %d GPNVMs\n\r", CHIP_EFC_NUM_GPNVMS); + break; + + case AT91C_EFC_FCMD_GETD: + case AT91C_EFC_FCMD_EA: + case AT91C_EFC_FCMD_GLB: + case AT91C_EFC_FCMD_GFB: +#ifdef AT91C_EFC_FCMD_STUI + case AT91C_EFC_FCMD_STUI: +#endif + ASSERT(argument == 0, "-F- Argument is meaningless for the given command.\n\r"); + break; + + default: ASSERT(0, "-F- Unknown command %d\n\r", command); + } + + // Start commandEmbedded flash + ASSERT((pEfc->EFC_FSR & AT91C_EFC_FRDY) == AT91C_EFC_FRDY, "-F- EEFC is not ready\n\r"); + pEfc->EFC_FCR = (0x5A << 24) | (argument << 8) | command; +} + +//------------------------------------------------------------------------------ +/// Performs the given command and wait until its completion (or an error). +/// Returns 0 if successful; otherwise returns an error code. +/// \param pEfc Pointer to an AT91S_EFC structure. +/// \param command Command to perform. +/// \param argument Optional command argument. +//------------------------------------------------------------------------------ +#if defined(flash) || defined (USE_FLASH) + #ifdef __ICCARM__ +__ramfunc + #else +__attribute__ ((section (".ramfunc"))) + #endif +#endif +unsigned char EFC_PerformCommand(AT91S_EFC *pEfc, unsigned char command, unsigned short argument) +{ + unsigned int status; + +#ifdef CHIP_FLASH_IAP_ADDRESS + +#ifdef AT91C_BASE_EFC1 + +// Pointer on IAP function in ROM + static unsigned int (*IAP_PerformCommand)(unsigned int, unsigned int); + unsigned int index = 0; + if (pEfc == AT91C_BASE_EFC1) { + + index = 1; + } + IAP_PerformCommand = (unsigned int (*)(unsigned int, unsigned int)) *((unsigned int *) CHIP_FLASH_IAP_ADDRESS); + EFCIndex = pEfc == AT91C_BASE_EFC0? 0: 1; + // Check if IAP function is implemented (opcode in SWI != 'b' or 'ldr') */ + if ((((((unsigned long) IAP_PerformCommand >> 24) & 0xFF) != 0xEA) && + (((unsigned long) IAP_PerformCommand >> 24) & 0xFF) != 0xE5)) { + + IAP_PerformCommand(index, (0x5A << 24) | (argument << 8) | command); + return (pEfc->EFC_FSR & (AT91C_EFC_LOCKE | AT91C_EFC_FCMDE)); + } +#else //only have one EEFC (AT91SAM9XE for example) + // Pointer on IAP function in ROM + static void (*IAP_PerformCommand)(unsigned int); + IAP_PerformCommand = (void (*)(unsigned int)) *((unsigned int *) CHIP_FLASH_IAP_ADDRESS); + + // Check if IAP function is implemented (opcode in SWI != 'b' or 'ldr') */ + if ((((((unsigned long) IAP_PerformCommand >> 24) & 0xFF) != 0xEA) && + (((unsigned long) IAP_PerformCommand >> 24) & 0xFF) != 0xE5)) { + + IAP_PerformCommand((0x5A << 24) | (argument << 8) | command); + return (pEfc->EFC_FSR & (AT91C_EFC_LOCKE | AT91C_EFC_FCMDE)); + } +#endif +#endif + pEfc->EFC_FCR = (0x5A << 24) | (argument << 8) | command; + do { + + status = pEfc->EFC_FSR; + } + while ((status & AT91C_EFC_FRDY) != AT91C_EFC_FRDY); + + return (status & (AT91C_EFC_LOCKE | AT91C_EFC_FCMDE)); +} + +//------------------------------------------------------------------------------ +/// Returns the current status of the EEFC. Keep in mind that this function clears +/// the value of some status bits (LOCKE, PROGE). +/// \param pEfc Pointer to an AT91S_EFC structure. +//------------------------------------------------------------------------------ +unsigned int EFC_GetStatus(AT91S_EFC *pEfc) +{ + return pEfc->EFC_FSR; +} + +//------------------------------------------------------------------------------ +/// Returns the result of the last executed command. +/// \param pEfc Pointer to an AT91S_EFC structure. +//------------------------------------------------------------------------------ +unsigned int EFC_GetResult(AT91S_EFC *pEfc) { + + return pEfc->EFC_FRR; +} + -- cgit v1.2.3