208 lines
6.1 KiB
C
208 lines
6.1 KiB
C
/*
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* Copyright (c) 2014, Lars Schmertmann <SmallLars@t-online.de>.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* 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
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include "flash.h"
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#define FLASH_BLOCK_SIZE 0x01000
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#define FLASH_BLOCK_11 0x18000
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#define FLASH_BLOCK_21 0x1A000
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#ifndef FLASH_CONF_B1
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#define FLASH_CONF_B1 FLASH_BLOCK_SIZE
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#endif
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#ifndef FLASH_CONF_B2
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#define FLASH_CONF_B2 FLASH_BLOCK_SIZE
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#endif
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#include "mc1322x.h"
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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uint16_t stackPointer;
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/* private prototypes ----------------------------------------------------- */
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flash_addr_t getAddr(flash_addr_t address);
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/* public functions -------------------------------------------------------- */
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void
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flash_init()
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{
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PRINTF("Initializing flash ... ");
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nvm_erase(gNvmInternalInterface_c, gNvmType_SST_c, 0x0F000000);
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, "\001", FLASH_BLOCK_11, 1);
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, "\001", FLASH_BLOCK_21, 1);
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uint32_t i;
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for(i = 1; i < 0x2000; i++) {
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#if DEBUG
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if(i % 0x400 == 0) {
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PRINTF(" .");
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}
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#endif
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, "\0", FLASH_BLOCK_11 + i, 1);
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, "\0", FLASH_BLOCK_21 + i, 1);
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}
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PRINTF("DONE\n");
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}
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nvmErr_t
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flash_getVar(void *dest, flash_addr_t address, uint32_t numBytes)
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{
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address = getAddr(address);
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if(address >= 0x18000 && address <= 0x1EFFF) {
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PRINTF("Read from Adress: %p\n", address);
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nvmErr_t err = nvm_read(gNvmInternalInterface_c, gNvmType_SST_c, dest, address, numBytes);
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if(err) {
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PRINTF("Read error, nmv_error: %u\n", err);
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return err;
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}
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return gNvmErrNoError_c;
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}
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PRINTF("Read error - Invalid pointer.\n");
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return gNvmErrInvalidPointer_c;
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}
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nvmErr_t
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flash_setVar(void *src, flash_addr_t address, uint32_t numBytes)
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{
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#if DEBUG
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printf("SetVar - START . ");
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uint32_t time = *MACA_CLK;
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#endif
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if(address >= 8192) {
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PRINTF("Write error - Invalid pointer.\n");
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return gNvmErrInvalidPointer_c;
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}
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uint32_t block_len = (address < 4096 ? FLASH_CONF_B1 : FLASH_CONF_B2);
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address = getAddr(address);
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flash_addr_t src_block = address & 0xFF000;
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flash_addr_t dst_block = src_block ^ 0x01000;
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address = address & 0x00FFF;
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if(address < 1 || address >= block_len) {
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PRINTF("Write error - Invalid pointer.\n");
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return gNvmErrInvalidPointer_c;
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}
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if(address + numBytes > block_len) {
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PRINTF("Write error - Var is to long.\n");
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return gNvmErrAddressSpaceOverflow_c;
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}
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nvm_erase(gNvmInternalInterface_c, gNvmType_SST_c, 1 << (dst_block / FLASH_BLOCK_SIZE));
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uint32_t i;
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uint8_t buf;
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for(i = 0; i < address; i++) {
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nvm_read(gNvmInternalInterface_c, gNvmType_SST_c, &buf, src_block + i, 1);
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, &buf, dst_block + i, 1);
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}
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PRINTF("Write to adress: %p\n", dst_block + i);
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, src, dst_block + i, numBytes);
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for(i += numBytes; i < block_len; i++) {
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nvm_read(gNvmInternalInterface_c, gNvmType_SST_c, &buf, src_block + i, 1);
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, &buf, dst_block + i, 1);
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}
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nvm_erase(gNvmInternalInterface_c, gNvmType_SST_c, 1 << (src_block / FLASH_BLOCK_SIZE));
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#if DEBUG
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time = *MACA_CLK - time;
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printf("FINISHED AFTER %u MS\n", time / 250);
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#endif
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return gNvmErrNoError_c;
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}
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nvmErr_t
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flash_cmp(void *src, flash_addr_t address, uint32_t numBytes)
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{
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address = getAddr(address);
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if(address >= 0x18000 && address <= 0x1EFFF) {
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return nvm_verify(gNvmInternalInterface_c, gNvmType_SST_c, src, address, numBytes);
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}
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PRINTF("Read error - Invalid pointer.\n");
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return gNvmErrInvalidPointer_c;
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}
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void
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flash_stack_init()
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{
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stackPointer = 0;
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nvm_erase(gNvmInternalInterface_c, gNvmType_SST_c, 1 << (FLASH_STACK / FLASH_BLOCK_SIZE));
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}
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nvmErr_t
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flash_stack_push(uint8_t *src, uint32_t numBytes)
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{
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if(stackPointer + numBytes > FLASH_BLOCK_SIZE) {
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return gNvmErrAddressSpaceOverflow_c;
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}
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nvm_write(gNvmInternalInterface_c, gNvmType_SST_c, src, FLASH_STACK + stackPointer, numBytes);
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stackPointer += numBytes;
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return gNvmErrNoError_c;
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}
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uint32_t
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flash_stack_size()
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{
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return stackPointer;
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}
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/* private functions ------------------------------------------------------- */
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flash_addr_t
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getAddr(flash_addr_t address)
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{
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if(address >= 0x02000) {
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return address;
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}
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flash_addr_t block = (address & 0x01000 ? FLASH_BLOCK_21 : FLASH_BLOCK_11);
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uint8_t blockcheck = (flash_cmp("\001", block, 1) == 0 ? 0 : 1);
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return block + (blockcheck << 12) + (address & 0x00FFF);
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}
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