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Diffstat (limited to 'firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/FLASHC/flashc.c')
| -rw-r--r-- | firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/FLASHC/flashc.c | 1117 |
1 files changed, 1117 insertions, 0 deletions
diff --git a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/FLASHC/flashc.c b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/FLASHC/flashc.c new file mode 100644 index 0000000..2eee15c --- /dev/null +++ b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/FLASHC/flashc.c @@ -0,0 +1,1117 @@ +/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ + +/*This file is prepared for Doxygen automatic documentation generation.*/ +/*! \file ********************************************************************* + * + * \brief FLASHC driver for AVR32 UC3. + * + * AVR32 Flash Controller driver module. + * + * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 + * - Supported devices: All AVR32 devices with a FLASHC module can be used. + * - AppNote: + * + * \author Atmel Corporation: http://www.atmel.com \n + * Support and FAQ: http://support.atmel.no/ + * + ******************************************************************************/ + +/* 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: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an Atmel + * AVR product. + * + * 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 + * EXPRESSLY AND SPECIFICALLY 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 + * + */ + +#include <avr32/io.h> +#include <stddef.h> +#include "compiler.h" +#include "flashc.h" + + +/*! \name FLASHC Writable Bit-Field Registers + */ +//! @{ + +typedef union +{ + unsigned long fcr; + avr32_flashc_fcr_t FCR; +} u_avr32_flashc_fcr_t; + +typedef union +{ + unsigned long fcmd; + avr32_flashc_fcmd_t FCMD; +} u_avr32_flashc_fcmd_t; + +//! @} + + +/*! \name Flash Properties + */ +//! @{ + + +unsigned int flashc_get_flash_size(void) +{ +#if (defined AVR32_FLASHC_300_H_INCLUDED) + static const unsigned int FLASH_SIZE[1 << AVR32_FLASHC_PR_FSZ_SIZE] = + { + 32 << 10, + 64 << 10, + 128 << 10, + 256 << 10, + 384 << 10, + 512 << 10, + 768 << 10, + 1024 << 10 + }; + return FLASH_SIZE[(AVR32_FLASHC.pr & AVR32_FLASHC_PR_FSZ_MASK) >> AVR32_FLASHC_PR_FSZ_OFFSET]; +#else + static const unsigned int FLASH_SIZE[1 << AVR32_FLASHC_FSR_FSZ_SIZE] = + { + 32 << 10, + 64 << 10, + 128 << 10, + 256 << 10, + 384 << 10, + 512 << 10, + 768 << 10, + 1024 << 10 + }; + return FLASH_SIZE[(AVR32_FLASHC.fsr & AVR32_FLASHC_FSR_FSZ_MASK) >> AVR32_FLASHC_FSR_FSZ_OFFSET]; +#endif +} + + +unsigned int flashc_get_page_count(void) +{ + return flashc_get_flash_size() / AVR32_FLASHC_PAGE_SIZE; +} + + +unsigned int flashc_get_page_count_per_region(void) +{ + return flashc_get_page_count() / AVR32_FLASHC_REGIONS; +} + + +unsigned int flashc_get_page_region(int page_number) +{ + return ((page_number >= 0) ? page_number : flashc_get_page_number()) / flashc_get_page_count_per_region(); +} + + +unsigned int flashc_get_region_first_page_number(unsigned int region) +{ + return region * flashc_get_page_count_per_region(); +} + + +//! @} + + +/*! \name FLASHC Control + */ +//! @{ + + +unsigned int flashc_get_wait_state(void) +{ + return (AVR32_FLASHC.fcr & AVR32_FLASHC_FCR_FWS_MASK) >> AVR32_FLASHC_FCR_FWS_OFFSET; +} + + +void flashc_set_wait_state(unsigned int wait_state) +{ + u_avr32_flashc_fcr_t u_avr32_flashc_fcr = {AVR32_FLASHC.fcr}; + u_avr32_flashc_fcr.FCR.fws = wait_state; + AVR32_FLASHC.fcr = u_avr32_flashc_fcr.fcr; +} + + +Bool flashc_is_ready_int_enabled(void) +{ + return ((AVR32_FLASHC.fcr & AVR32_FLASHC_FCR_FRDY_MASK) != 0); +} + + +void flashc_enable_ready_int(Bool enable) +{ + u_avr32_flashc_fcr_t u_avr32_flashc_fcr = {AVR32_FLASHC.fcr}; + u_avr32_flashc_fcr.FCR.frdy = (enable != FALSE); + AVR32_FLASHC.fcr = u_avr32_flashc_fcr.fcr; +} + + +Bool flashc_is_lock_error_int_enabled(void) +{ + return ((AVR32_FLASHC.fcr & AVR32_FLASHC_FCR_LOCKE_MASK) != 0); +} + + +void flashc_enable_lock_error_int(Bool enable) +{ + u_avr32_flashc_fcr_t u_avr32_flashc_fcr = {AVR32_FLASHC.fcr}; + u_avr32_flashc_fcr.FCR.locke = (enable != FALSE); + AVR32_FLASHC.fcr = u_avr32_flashc_fcr.fcr; +} + + +Bool flashc_is_prog_error_int_enabled(void) +{ + return ((AVR32_FLASHC.fcr & AVR32_FLASHC_FCR_PROGE_MASK) != 0); +} + + +void flashc_enable_prog_error_int(Bool enable) +{ + u_avr32_flashc_fcr_t u_avr32_flashc_fcr = {AVR32_FLASHC.fcr}; + u_avr32_flashc_fcr.FCR.proge = (enable != FALSE); + AVR32_FLASHC.fcr = u_avr32_flashc_fcr.fcr; +} + + +//! @} + + +/*! \name FLASHC Status + */ +//! @{ + + +Bool flashc_is_ready(void) +{ + return ((AVR32_FLASHC.fsr & AVR32_FLASHC_FSR_FRDY_MASK) != 0); +} + + +void flashc_default_wait_until_ready(void) +{ + while (!flashc_is_ready()); +} + + +void (*volatile flashc_wait_until_ready)(void) = flashc_default_wait_until_ready; + + +/*! \brief Gets the error status of the FLASHC. + * + * \return The error status of the FLASHC built up from + * \c AVR32_FLASHC_FSR_LOCKE_MASK and \c AVR32_FLASHC_FSR_PROGE_MASK. + * + * \warning This hardware error status is cleared by all functions reading the + * Flash Status Register (FSR). This function is therefore not part of + * the driver's API which instead presents \ref flashc_is_lock_error + * and \ref flashc_is_programming_error. + */ +static unsigned int flashc_get_error_status(void) +{ + return AVR32_FLASHC.fsr & (AVR32_FLASHC_FSR_LOCKE_MASK | + AVR32_FLASHC_FSR_PROGE_MASK); +} + + +//! Sticky error status of the FLASHC. +//! This variable is updated by functions that issue FLASHC commands. It +//! contains the cumulated FLASHC error status of all the FLASHC commands issued +//! by a function. +static unsigned int flashc_error_status = 0; + + +Bool flashc_is_lock_error(void) +{ + return ((flashc_error_status & AVR32_FLASHC_FSR_LOCKE_MASK) != 0); +} + + +Bool flashc_is_programming_error(void) +{ + return ((flashc_error_status & AVR32_FLASHC_FSR_PROGE_MASK) != 0); +} + + +//! @} + + +/*! \name FLASHC Command Control + */ +//! @{ + + +unsigned int flashc_get_command(void) +{ + return (AVR32_FLASHC.fcmd & AVR32_FLASHC_FCMD_CMD_MASK) >> AVR32_FLASHC_FCMD_CMD_OFFSET; +} + + +unsigned int flashc_get_page_number(void) +{ + return (AVR32_FLASHC.fcmd & AVR32_FLASHC_FCMD_PAGEN_MASK) >> AVR32_FLASHC_FCMD_PAGEN_OFFSET; +} + + +void flashc_issue_command(unsigned int command, int page_number) +{ + u_avr32_flashc_fcmd_t u_avr32_flashc_fcmd; + flashc_wait_until_ready(); + u_avr32_flashc_fcmd.fcmd = AVR32_FLASHC.fcmd; + u_avr32_flashc_fcmd.FCMD.cmd = command; + if (page_number >= 0) u_avr32_flashc_fcmd.FCMD.pagen = page_number; + u_avr32_flashc_fcmd.FCMD.key = AVR32_FLASHC_FCMD_KEY_KEY; + AVR32_FLASHC.fcmd = u_avr32_flashc_fcmd.fcmd; + flashc_error_status = flashc_get_error_status(); + flashc_wait_until_ready(); +} + + +//! @} + + +/*! \name FLASHC Global Commands + */ +//! @{ + + +void flashc_no_operation(void) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_NOP, -1); +} + + +void flashc_erase_all(void) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_EA, -1); +} + + +//! @} + + +/*! \name FLASHC Protection Mechanisms + */ +//! @{ + + +Bool flashc_is_security_bit_active(void) +{ + return ((AVR32_FLASHC.fsr & AVR32_FLASHC_FSR_SECURITY_MASK) != 0); +} + + +void flashc_activate_security_bit(void) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_SSB, -1); +} + + +unsigned int flashc_get_bootloader_protected_size(void) +{ + unsigned int bootprot = (1 << AVR32_FLASHC_FGPFRLO_BOOTPROT_SIZE) - 1 - + flashc_read_gp_fuse_bitfield(AVR32_FLASHC_FGPFRLO_BOOTPROT_OFFSET, + AVR32_FLASHC_FGPFRLO_BOOTPROT_SIZE); + return (bootprot) ? AVR32_FLASHC_PAGE_SIZE << bootprot : 0; +} + + +unsigned int flashc_set_bootloader_protected_size(unsigned int bootprot_size) +{ + flashc_set_gp_fuse_bitfield(AVR32_FLASHC_FGPFRLO_BOOTPROT_OFFSET, + AVR32_FLASHC_FGPFRLO_BOOTPROT_SIZE, + (1 << AVR32_FLASHC_FGPFRLO_BOOTPROT_SIZE) - 1 - + ((bootprot_size) ? + 32 - clz((((min(max(bootprot_size, AVR32_FLASHC_PAGE_SIZE << 1), + AVR32_FLASHC_PAGE_SIZE << + ((1 << AVR32_FLASHC_FGPFRLO_BOOTPROT_SIZE) - 1)) + + AVR32_FLASHC_PAGE_SIZE - 1) / + AVR32_FLASHC_PAGE_SIZE) << 1) - 1) - 1 : + 0)); + return flashc_get_bootloader_protected_size(); +} + + +Bool flashc_is_external_privileged_fetch_locked(void) +{ + return (!flashc_read_gp_fuse_bit(AVR32_FLASHC_FGPFRLO_EPFL_OFFSET)); +} + + +void flashc_lock_external_privileged_fetch(Bool lock) +{ + flashc_set_gp_fuse_bit(AVR32_FLASHC_FGPFRLO_EPFL_OFFSET, !lock); +} + + +Bool flashc_is_page_region_locked(int page_number) +{ + return flashc_is_region_locked(flashc_get_page_region(page_number)); +} + + +Bool flashc_is_region_locked(unsigned int region) +{ + return ((AVR32_FLASHC.fsr & AVR32_FLASHC_FSR_LOCK0_MASK << (region & (AVR32_FLASHC_REGIONS - 1))) != 0); +} + + +void flashc_lock_page_region(int page_number, Bool lock) +{ + flashc_issue_command((lock) ? AVR32_FLASHC_FCMD_CMD_LP : AVR32_FLASHC_FCMD_CMD_UP, page_number); +} + + +void flashc_lock_region(unsigned int region, Bool lock) +{ + flashc_lock_page_region(flashc_get_region_first_page_number(region), lock); +} + + +void flashc_lock_all_regions(Bool lock) +{ + unsigned int error_status = 0; + unsigned int region = AVR32_FLASHC_REGIONS; + while (region) + { + flashc_lock_region(--region, lock); + error_status |= flashc_error_status; + } + flashc_error_status = error_status; +} + + +//! @} + + +/*! \name Access to General-Purpose Fuses + */ +//! @{ + + +Bool flashc_read_gp_fuse_bit(unsigned int gp_fuse_bit) +{ + return ((flashc_read_all_gp_fuses() & 1ULL << (gp_fuse_bit & 0x3F)) != 0); +} + + +U64 flashc_read_gp_fuse_bitfield(unsigned int pos, unsigned int width) +{ + return flashc_read_all_gp_fuses() >> (pos & 0x3F) & ((1ULL << min(width, 64)) - 1); +} + + +U8 flashc_read_gp_fuse_byte(unsigned int gp_fuse_byte) +{ + return flashc_read_all_gp_fuses() >> ((gp_fuse_byte & 0x07) << 3); +} + + +U64 flashc_read_all_gp_fuses(void) +{ + return AVR32_FLASHC.fgpfrlo | (U64)AVR32_FLASHC.fgpfrhi << 32; +} + + +Bool flashc_erase_gp_fuse_bit(unsigned int gp_fuse_bit, Bool check) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_EGPB, gp_fuse_bit & 0x3F); + return (check) ? flashc_read_gp_fuse_bit(gp_fuse_bit) : TRUE; +} + + +Bool flashc_erase_gp_fuse_bitfield(unsigned int pos, unsigned int width, Bool check) +{ + unsigned int error_status = 0; + unsigned int gp_fuse_bit; + pos &= 0x3F; + width = min(width, 64); + for (gp_fuse_bit = pos; gp_fuse_bit < pos + width; gp_fuse_bit++) + { + flashc_erase_gp_fuse_bit(gp_fuse_bit, FALSE); + error_status |= flashc_error_status; + } + flashc_error_status = error_status; + return (check) ? (flashc_read_gp_fuse_bitfield(pos, width) == (1ULL << width) - 1) : TRUE; +} + + +Bool flashc_erase_gp_fuse_byte(unsigned int gp_fuse_byte, Bool check) +{ + unsigned int error_status; + unsigned int current_gp_fuse_byte; + U64 value = flashc_read_all_gp_fuses(); + flashc_erase_all_gp_fuses(FALSE); + error_status = flashc_error_status; + for (current_gp_fuse_byte = 0; current_gp_fuse_byte < 8; current_gp_fuse_byte++, value >>= 8) + { + if (current_gp_fuse_byte != gp_fuse_byte) + { + flashc_write_gp_fuse_byte(current_gp_fuse_byte, value); + error_status |= flashc_error_status; + } + } + flashc_error_status = error_status; + return (check) ? (flashc_read_gp_fuse_byte(gp_fuse_byte) == 0xFF) : TRUE; +} + + +Bool flashc_erase_all_gp_fuses(Bool check) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_EAGPF, -1); + return (check) ? (flashc_read_all_gp_fuses() == 0xFFFFFFFFFFFFFFFFULL) : TRUE; +} + + +void flashc_write_gp_fuse_bit(unsigned int gp_fuse_bit, Bool value) +{ + if (!value) + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_WGPB, gp_fuse_bit & 0x3F); +} + + +void flashc_write_gp_fuse_bitfield(unsigned int pos, unsigned int width, U64 value) +{ + unsigned int error_status = 0; + unsigned int gp_fuse_bit; + pos &= 0x3F; + width = min(width, 64); + for (gp_fuse_bit = pos; gp_fuse_bit < pos + width; gp_fuse_bit++, value >>= 1) + { + flashc_write_gp_fuse_bit(gp_fuse_bit, value & 0x01); + error_status |= flashc_error_status; + } + flashc_error_status = error_status; +} + + +void flashc_write_gp_fuse_byte(unsigned int gp_fuse_byte, U8 value) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_PGPFB, (gp_fuse_byte & 0x07) | value << 3); +} + + +void flashc_write_all_gp_fuses(U64 value) +{ + unsigned int error_status = 0; + unsigned int gp_fuse_byte; + for (gp_fuse_byte = 0; gp_fuse_byte < 8; gp_fuse_byte++, value >>= 8) + { + flashc_write_gp_fuse_byte(gp_fuse_byte, value); + error_status |= flashc_error_status; + } + flashc_error_status = error_status; +} + + +void flashc_set_gp_fuse_bit(unsigned int gp_fuse_bit, Bool value) +{ + if (value) + flashc_erase_gp_fuse_bit(gp_fuse_bit, FALSE); + else + flashc_write_gp_fuse_bit(gp_fuse_bit, FALSE); +} + + +void flashc_set_gp_fuse_bitfield(unsigned int pos, unsigned int width, U64 value) +{ + unsigned int error_status = 0; + unsigned int gp_fuse_bit; + pos &= 0x3F; + width = min(width, 64); + for (gp_fuse_bit = pos; gp_fuse_bit < pos + width; gp_fuse_bit++, value >>= 1) + { + flashc_set_gp_fuse_bit(gp_fuse_bit, value & 0x01); + error_status |= flashc_error_status; + } + flashc_error_status = error_status; +} + + +void flashc_set_gp_fuse_byte(unsigned int gp_fuse_byte, U8 value) +{ + unsigned int error_status; + switch (value) + { + case 0xFF: + flashc_erase_gp_fuse_byte(gp_fuse_byte, FALSE); + break; + case 0x00: + flashc_write_gp_fuse_byte(gp_fuse_byte, 0x00); + break; + default: + flashc_erase_gp_fuse_byte(gp_fuse_byte, FALSE); + error_status = flashc_error_status; + flashc_write_gp_fuse_byte(gp_fuse_byte, value); + flashc_error_status |= error_status; + } +} + + +void flashc_set_all_gp_fuses(U64 value) +{ + unsigned int error_status; + switch (value) + { + case 0xFFFFFFFFFFFFFFFFULL: + flashc_erase_all_gp_fuses(FALSE); + break; + case 0x0000000000000000ULL: + flashc_write_all_gp_fuses(0x0000000000000000ULL); + break; + default: + flashc_erase_all_gp_fuses(FALSE); + error_status = flashc_error_status; + flashc_write_all_gp_fuses(value); + flashc_error_status |= error_status; + } +} + + +//! @} + + +/*! \name Access to Flash Pages + */ +//! @{ + + +void flashc_clear_page_buffer(void) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_CPB, -1); +} + + +Bool flashc_is_page_erased(void) +{ + return ((AVR32_FLASHC.fsr & AVR32_FLASHC_FSR_QPRR_MASK) != 0); +} + + +Bool flashc_quick_page_read(int page_number) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_QPR, page_number); + return flashc_is_page_erased(); +} + + +Bool flashc_erase_page(int page_number, Bool check) +{ + Bool page_erased = TRUE; + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_EP, page_number); + if (check) + { + unsigned int error_status = flashc_error_status; + page_erased = flashc_quick_page_read(-1); + flashc_error_status |= error_status; + } + return page_erased; +} + + +Bool flashc_erase_all_pages(Bool check) +{ + Bool all_pages_erased = TRUE; + unsigned int error_status = 0; + unsigned int page_number = flashc_get_page_count(); + while (page_number) + { + all_pages_erased &= flashc_erase_page(--page_number, check); + error_status |= flashc_error_status; + } + flashc_error_status = error_status; + return all_pages_erased; +} + + +void flashc_write_page(int page_number) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_WP, page_number); +} + + +Bool flashc_quick_user_page_read(void) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_QPRUP, -1); + return flashc_is_page_erased(); +} + + +Bool flashc_erase_user_page(Bool check) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_EUP, -1); + return (check) ? flashc_quick_user_page_read() : TRUE; +} + + +void flashc_write_user_page(void) +{ + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_WUP, -1); +} + + +volatile void *flashc_memset8(volatile void *dst, U8 src, size_t nbytes, Bool erase) +{ + return flashc_memset16(dst, src | (U16)src << 8, nbytes, erase); +} + + +volatile void *flashc_memset16(volatile void *dst, U16 src, size_t nbytes, Bool erase) +{ + return flashc_memset32(dst, src | (U32)src << 16, nbytes, erase); +} + + +volatile void *flashc_memset32(volatile void *dst, U32 src, size_t nbytes, Bool erase) +{ + return flashc_memset64(dst, src | (U64)src << 32, nbytes, erase); +} + + +volatile void *flashc_memset64(volatile void *dst, U64 src, size_t nbytes, Bool erase) +{ + // Use aggregated pointers to have several alignments available for a same address. + UnionCVPtr flash_array_end; + UnionVPtr dest; + Union64 source = {0}; + StructCVPtr dest_end; + UnionCVPtr flash_page_source_end; + Bool incomplete_flash_page_end; + Union64 flash_dword; + UnionVPtr tmp; + unsigned int error_status = 0; + unsigned int i; + + // Reformat arguments. + flash_array_end.u8ptr = AVR32_FLASH + flashc_get_flash_size(); + dest.u8ptr = dst; + for (i = (Get_align((U32)dest.u8ptr, sizeof(U64)) - 1) & (sizeof(U64) - 1); + src; i = (i - 1) & (sizeof(U64) - 1)) + { + source.u8[i] = src; + src >>= 8; + } + dest_end.u8ptr = dest.u8ptr + nbytes; + + // If destination is outside flash, go to next flash page if any. + if (dest.u8ptr < AVR32_FLASH) + { + dest.u8ptr = AVR32_FLASH; + } + else if (flash_array_end.u8ptr <= dest.u8ptr && dest.u8ptr < AVR32_FLASHC_USER_PAGE) + { + dest.u8ptr = AVR32_FLASHC_USER_PAGE; + } + + // If end of destination is outside flash, move it to the end of the previous flash page if any. + if (dest_end.u8ptr > AVR32_FLASHC_USER_PAGE + AVR32_FLASHC_USER_PAGE_SIZE) + { + dest_end.u8ptr = AVR32_FLASHC_USER_PAGE + AVR32_FLASHC_USER_PAGE_SIZE; + } + else if (AVR32_FLASHC_USER_PAGE >= dest_end.u8ptr && dest_end.u8ptr > flash_array_end.u8ptr) + { + dest_end.u8ptr = flash_array_end.u8ptr; + } + + // Align each end of destination pointer with its natural boundary. + dest_end.u16ptr = (U16 *)Align_down((U32)dest_end.u8ptr, sizeof(U16)); + dest_end.u32ptr = (U32 *)Align_down((U32)dest_end.u16ptr, sizeof(U32)); + dest_end.u64ptr = (U64 *)Align_down((U32)dest_end.u32ptr, sizeof(U64)); + + // While end of destination is not reached... + while (dest.u8ptr < dest_end.u8ptr) + { + // Clear the page buffer in order to prepare data for a flash page write. + flashc_clear_page_buffer(); + error_status |= flashc_error_status; + + // Determine where the source data will end in the current flash page. + flash_page_source_end.u64ptr = + (U64 *)min((U32)dest_end.u64ptr, + Align_down((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE) + AVR32_FLASHC_PAGE_SIZE); + + // Determine if the current destination page has an incomplete end. + incomplete_flash_page_end = (Align_down((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE) >= + Align_down((U32)dest_end.u8ptr, AVR32_FLASHC_PAGE_SIZE)); + + // Use a flash double-word buffer to manage unaligned accesses. + flash_dword.u64 = source.u64; + + // If destination does not point to the beginning of the current flash page... + if (!Test_align((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE)) + { + // Fill the beginning of the page buffer with the current flash page data. + // This is required by the hardware, even if page erase is not requested, + // in order to be able to write successfully to erased parts of flash + // pages that have already been written to. + for (tmp.u8ptr = (U8 *)Align_down((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE); + tmp.u64ptr < (U64 *)Align_down((U32)dest.u8ptr, sizeof(U64)); + tmp.u64ptr++) + *tmp.u64ptr = *tmp.u64ptr; + + // If destination is not 64-bit aligned... + if (!Test_align((U32)dest.u8ptr, sizeof(U64))) + { + // Fill the beginning of the flash double-word buffer with the current + // flash page data. + // This is required by the hardware, even if page erase is not + // requested, in order to be able to write successfully to erased parts + // of flash pages that have already been written to. + for (i = 0; i < Get_align((U32)dest.u8ptr, sizeof(U64)); i++) + flash_dword.u8[i] = *tmp.u8ptr++; + + // Align the destination pointer with its 64-bit boundary. + dest.u64ptr = (U64 *)Align_down((U32)dest.u8ptr, sizeof(U64)); + + // If the current destination double-word is not the last one... + if (dest.u64ptr < dest_end.u64ptr) + { + // Write the flash double-word buffer to the page buffer and reinitialize it. + *dest.u64ptr++ = flash_dword.u64; + flash_dword.u64 = source.u64; + } + } + } + + // Write the source data to the page buffer with 64-bit alignment. + for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--) + *dest.u64ptr++ = source.u64; + + // If the current destination page has an incomplete end... + if (incomplete_flash_page_end) + { + // This is required by the hardware, even if page erase is not requested, + // in order to be able to write successfully to erased parts of flash + // pages that have already been written to. + { + tmp.u8ptr = (volatile U8 *)dest_end.u8ptr; + + // If end of destination is not 64-bit aligned... + if (!Test_align((U32)dest_end.u8ptr, sizeof(U64))) + { + // Fill the end of the flash double-word buffer with the current flash page data. + for (i = Get_align((U32)dest_end.u8ptr, sizeof(U64)); i < sizeof(U64); i++) + flash_dword.u8[i] = *tmp.u8ptr++; + + // Write the flash double-word buffer to the page buffer. + *dest.u64ptr++ = flash_dword.u64; + } + + // Fill the end of the page buffer with the current flash page data. + for (; !Test_align((U32)tmp.u64ptr, AVR32_FLASHC_PAGE_SIZE); tmp.u64ptr++) + *tmp.u64ptr = *tmp.u64ptr; + } + } + + // If the current flash page is in the flash array... + if (dest.u8ptr <= AVR32_FLASHC_USER_PAGE) + { + // Erase the current page if requested and write it from the page buffer. + if (erase) + { + flashc_erase_page(-1, FALSE); + error_status |= flashc_error_status; + } + flashc_write_page(-1); + error_status |= flashc_error_status; + + // If the end of the flash array is reached, go to the User page. + if (dest.u8ptr >= flash_array_end.u8ptr) + dest.u8ptr = AVR32_FLASHC_USER_PAGE; + } + // If the current flash page is the User page... + else + { + // Erase the User page if requested and write it from the page buffer. + if (erase) + { + flashc_erase_user_page(FALSE); + error_status |= flashc_error_status; + } + flashc_write_user_page(); + error_status |= flashc_error_status; + } + } + + // Update the FLASHC error status. + flashc_error_status = error_status; + + // Return the initial destination pointer as the standard memset function does. + return dst; +} + + +volatile void *flashc_memcpy(volatile void *dst, const void *src, size_t nbytes, Bool erase) +{ + // Use aggregated pointers to have several alignments available for a same address. + UnionCVPtr flash_array_end; + UnionVPtr dest; + UnionCPtr source; + StructCVPtr dest_end; + UnionCVPtr flash_page_source_end; + Bool incomplete_flash_page_end; + Union64 flash_dword; + Bool flash_dword_pending = FALSE; + UnionVPtr tmp; + unsigned int error_status = 0; + unsigned int i, j; + + // Reformat arguments. + flash_array_end.u8ptr = AVR32_FLASH + flashc_get_flash_size(); + dest.u8ptr = dst; + source.u8ptr = src; + dest_end.u8ptr = dest.u8ptr + nbytes; + + // If destination is outside flash, go to next flash page if any. + if (dest.u8ptr < AVR32_FLASH) + { + source.u8ptr += AVR32_FLASH - dest.u8ptr; + dest.u8ptr = AVR32_FLASH; + } + else if (flash_array_end.u8ptr <= dest.u8ptr && dest.u8ptr < AVR32_FLASHC_USER_PAGE) + { + source.u8ptr += AVR32_FLASHC_USER_PAGE - dest.u8ptr; + dest.u8ptr = AVR32_FLASHC_USER_PAGE; + } + + // If end of destination is outside flash, move it to the end of the previous flash page if any. + if (dest_end.u8ptr > AVR32_FLASHC_USER_PAGE + AVR32_FLASHC_USER_PAGE_SIZE) + { + dest_end.u8ptr = AVR32_FLASHC_USER_PAGE + AVR32_FLASHC_USER_PAGE_SIZE; + } + else if (AVR32_FLASHC_USER_PAGE >= dest_end.u8ptr && dest_end.u8ptr > flash_array_end.u8ptr) + { + dest_end.u8ptr = flash_array_end.u8ptr; + } + + // Align each end of destination pointer with its natural boundary. + dest_end.u16ptr = (U16 *)Align_down((U32)dest_end.u8ptr, sizeof(U16)); + dest_end.u32ptr = (U32 *)Align_down((U32)dest_end.u16ptr, sizeof(U32)); + dest_end.u64ptr = (U64 *)Align_down((U32)dest_end.u32ptr, sizeof(U64)); + + // While end of destination is not reached... + while (dest.u8ptr < dest_end.u8ptr) + { + // Clear the page buffer in order to prepare data for a flash page write. + flashc_clear_page_buffer(); + error_status |= flashc_error_status; + + // Determine where the source data will end in the current flash page. + flash_page_source_end.u64ptr = + (U64 *)min((U32)dest_end.u64ptr, + Align_down((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE) + AVR32_FLASHC_PAGE_SIZE); + + // Determine if the current destination page has an incomplete end. + incomplete_flash_page_end = (Align_down((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE) >= + Align_down((U32)dest_end.u8ptr, AVR32_FLASHC_PAGE_SIZE)); + + // If destination does not point to the beginning of the current flash page... + if (!Test_align((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE)) + { + // Fill the beginning of the page buffer with the current flash page data. + // This is required by the hardware, even if page erase is not requested, + // in order to be able to write successfully to erased parts of flash + // pages that have already been written to. + for (tmp.u8ptr = (U8 *)Align_down((U32)dest.u8ptr, AVR32_FLASHC_PAGE_SIZE); + tmp.u64ptr < (U64 *)Align_down((U32)dest.u8ptr, sizeof(U64)); + tmp.u64ptr++) + *tmp.u64ptr = *tmp.u64ptr; + + // If destination is not 64-bit aligned... + if (!Test_align((U32)dest.u8ptr, sizeof(U64))) + { + // Fill the beginning of the flash double-word buffer with the current + // flash page data. + // This is required by the hardware, even if page erase is not + // requested, in order to be able to write successfully to erased parts + // of flash pages that have already been written to. + for (i = 0; i < Get_align((U32)dest.u8ptr, sizeof(U64)); i++) + flash_dword.u8[i] = *tmp.u8ptr++; + + // Fill the end of the flash double-word buffer with the source data. + for (; i < sizeof(U64); i++) + flash_dword.u8[i] = *source.u8ptr++; + + // Align the destination pointer with its 64-bit boundary. + dest.u64ptr = (U64 *)Align_down((U32)dest.u8ptr, sizeof(U64)); + + // If the current destination double-word is not the last one... + if (dest.u64ptr < dest_end.u64ptr) + { + // Write the flash double-word buffer to the page buffer. + *dest.u64ptr++ = flash_dword.u64; + } + // If the current destination double-word is the last one, the flash + // double-word buffer must be kept for later. + else flash_dword_pending = TRUE; + } + } + + // Read the source data with the maximal possible alignment and write it to + // the page buffer with 64-bit alignment. + switch (Get_align((U32)source.u8ptr, sizeof(U32))) + { + case 0: + for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--) + *dest.u64ptr++ = *source.u64ptr++; + break; + + case sizeof(U16): + for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--) + { + for (j = 0; j < sizeof(U64) / sizeof(U16); j++) flash_dword.u16[j] = *source.u16ptr++; + *dest.u64ptr++ = flash_dword.u64; + } + break; + + default: + for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--) + { + for (j = 0; j < sizeof(U64); j++) flash_dword.u8[j] = *source.u8ptr++; + *dest.u64ptr++ = flash_dword.u64; + } + } + + // If the current destination page has an incomplete end... + if (incomplete_flash_page_end) + { + // If the flash double-word buffer is in use, do not initialize it. + if (flash_dword_pending) i = Get_align((U32)dest_end.u8ptr, sizeof(U64)); + // If the flash double-word buffer is free... + else + { + // Fill the beginning of the flash double-word buffer with the source data. + for (i = 0; i < Get_align((U32)dest_end.u8ptr, sizeof(U64)); i++) + flash_dword.u8[i] = *source.u8ptr++; + } + + // This is required by the hardware, even if page erase is not requested, + // in order to be able to write successfully to erased parts of flash + // pages that have already been written to. + { + tmp.u8ptr = (volatile U8 *)dest_end.u8ptr; + + // If end of destination is not 64-bit aligned... + if (!Test_align((U32)dest_end.u8ptr, sizeof(U64))) + { + // Fill the end of the flash double-word buffer with the current flash page data. + for (; i < sizeof(U64); i++) + flash_dword.u8[i] = *tmp.u8ptr++; + + // Write the flash double-word buffer to the page buffer. + *dest.u64ptr++ = flash_dword.u64; + } + + // Fill the end of the page buffer with the current flash page data. + for (; !Test_align((U32)tmp.u64ptr, AVR32_FLASHC_PAGE_SIZE); tmp.u64ptr++) + *tmp.u64ptr = *tmp.u64ptr; + } + } + + // If the current flash page is in the flash array... + if (dest.u8ptr <= AVR32_FLASHC_USER_PAGE) + { + // Erase the current page if requested and write it from the page buffer. + if (erase) + { + flashc_erase_page(-1, FALSE); + error_status |= flashc_error_status; + } + flashc_write_page(-1); + error_status |= flashc_error_status; + + // If the end of the flash array is reached, go to the User page. + if (dest.u8ptr >= flash_array_end.u8ptr) + { + source.u8ptr += AVR32_FLASHC_USER_PAGE - dest.u8ptr; + dest.u8ptr = AVR32_FLASHC_USER_PAGE; + } + } + // If the current flash page is the User page... + else + { + // Erase the User page if requested and write it from the page buffer. + if (erase) + { + flashc_erase_user_page(FALSE); + error_status |= flashc_error_status; + } + flashc_write_user_page(); + error_status |= flashc_error_status; + } + } + + // Update the FLASHC error status. + flashc_error_status = error_status; + + // Return the initial destination pointer as the standard memcpy function does. + return dst; +} + + +#if UC3C +void flashc_set_flash_waitstate_and_readmode(unsigned long cpu_f_hz) +{ + //! Device-specific data + #undef AVR32_FLASHC_FWS_0_MAX_FREQ + #undef AVR32_FLASHC_FWS_1_MAX_FREQ + #undef AVR32_FLASHC_HSEN_FWS_0_MAX_FREQ + #undef AVR32_FLASHC_HSEN_FWS_1_MAX_FREQ + #define AVR32_FLASHC_FWS_0_MAX_FREQ 33000000 + #define AVR32_FLASHC_FWS_1_MAX_FREQ 66000000 + #define AVR32_FLASHC_HSEN_FWS_0_MAX_FREQ 33000000 + #define AVR32_FLASHC_HSEN_FWS_1_MAX_FREQ 72000000 + // These defines are missing from or wrong in the toolchain header files uc3cxxx.h + // Put a Bugzilla + + if(cpu_f_hz > AVR32_FLASHC_HSEN_FWS_0_MAX_FREQ) // > 33MHz + { + // Set a wait-state + flashc_set_wait_state(1); + if(cpu_f_hz <= AVR32_FLASHC_FWS_1_MAX_FREQ) // <= 66MHz and >33Mhz + { + // Disable the high-speed read mode. + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_HSDIS, -1); + } + else // > 66Mhz + { + // Enable the high-speed read mode. + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_HSEN, -1); + } + } + else // <= 33 MHz + { + // Disable wait-state + flashc_set_wait_state(0); + + // Disable the high-speed read mode. + flashc_issue_command(AVR32_FLASHC_FCMD_CMD_HSDIS, -1); + + } +} +#endif // UC3C device-specific implementation + +//! @} |