John Mitchell / DMSupport

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Dependencies:   DM_FATFileSystem DM_HttpServer DM_USBHost EthernetInterface USBDevice mbed-rpc mbed-rtos mbed-src

Dependents:   lpc4088_displaymodule_hello_world_Sept_2018

Fork of DMSupport by Embedded Artists

Bios/BiosLoader.cpp@29:b1ec19000e15, 2015-01-26 (annotated)

Committer:
embeddedartists
Date:
Mon Jan 26 10:12:57 2015 +0100
Revision:
29:b1ec19000e15
Parent:
28:8ae20cb0b943
Child:
31:d47cffcb0a3e
- Fixed compiler warnings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 22:1a58a518435c 1 /*
embeddedartists 22:1a58a518435c 2 * Copyright 2014 Embedded Artists AB
embeddedartists 22:1a58a518435c 3 *
embeddedartists 22:1a58a518435c 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 22:1a58a518435c 5 * you may not use this file except in compliance with the License.
embeddedartists 22:1a58a518435c 6 * You may obtain a copy of the License at
embeddedartists 22:1a58a518435c 7 *
embeddedartists 22:1a58a518435c 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 22:1a58a518435c 9 *
embeddedartists 22:1a58a518435c 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 22:1a58a518435c 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 22:1a58a518435c 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 22:1a58a518435c 13 * See the License for the specific language governing permissions and
embeddedartists 22:1a58a518435c 14 * limitations under the License.
embeddedartists 22:1a58a518435c 15 */
embeddedartists 22:1a58a518435c 16
embeddedartists 22:1a58a518435c 17 #include "mbed.h"
embeddedartists 22:1a58a518435c 18 #include "BiosLoader.h"
embeddedartists 22:1a58a518435c 19 #include "DMBoard.h"
embeddedartists 22:1a58a518435c 20 #include "BiosEEPROM.h"
embeddedartists 22:1a58a518435c 21 #include "crc.h"
embeddedartists 22:1a58a518435c 22 #include "bios.h"
embeddedartists 28:8ae20cb0b943 23 #include "meas.h"
embeddedartists 22:1a58a518435c 24
embeddedartists 22:1a58a518435c 25 #if defined(DM_BOARD_BIOS_DEVELOPMENT)
embeddedartists 22:1a58a518435c 26 #ifdef __cplusplus
embeddedartists 22:1a58a518435c 27 extern "C" {
embeddedartists 22:1a58a518435c 28 #endif
embeddedartists 26:a65fbb4bde5c 29 void bios_debug_aid(bios_header_t* header, const char** pMsg, uint32_t* paramSize);
embeddedartists 22:1a58a518435c 30 #ifdef __cplusplus
embeddedartists 22:1a58a518435c 31 }
embeddedartists 22:1a58a518435c 32 #endif
embeddedartists 22:1a58a518435c 33 #endif
embeddedartists 22:1a58a518435c 34
embeddedartists 22:1a58a518435c 35 /******************************************************************************
embeddedartists 22:1a58a518435c 36 * Defines and typedefs
embeddedartists 22:1a58a518435c 37 *****************************************************************************/
embeddedartists 22:1a58a518435c 38
embeddedartists 22:1a58a518435c 39 #define MOVE_POINTER(__x, __off) ( ( (uint32_t*)(__x) ) = (uint32_t*)( (uint32_t)(__x) + (__off) ) )
embeddedartists 22:1a58a518435c 40
embeddedartists 22:1a58a518435c 41 /*
embeddedartists 22:1a58a518435c 42 * Make sure that we reserve at least this amount of RAM for future
embeddedartists 22:1a58a518435c 43 * expansion of the BIOS. This prevents the user from squeezing out
embeddedartists 22:1a58a518435c 44 * the last drop of available RAM in his application.
embeddedartists 22:1a58a518435c 45 */
embeddedartists 22:1a58a518435c 46 #define BIOS_RESERVED_CHUNK 0x1000
embeddedartists 22:1a58a518435c 47 #define BIOS_MAX_SIZE 0x100000
embeddedartists 22:1a58a518435c 48 #ifndef MAX
embeddedartists 22:1a58a518435c 49 #define MAX(__a, __b) (((__a)>(__b))?(__a):(__b))
embeddedartists 22:1a58a518435c 50 #endif
embeddedartists 22:1a58a518435c 51
embeddedartists 26:a65fbb4bde5c 52 /*
embeddedartists 26:a65fbb4bde5c 53 * The BIOS is API compatible as long as the Major component of the
embeddedartists 26:a65fbb4bde5c 54 * version is the same.
embeddedartists 26:a65fbb4bde5c 55 */
embeddedartists 26:a65fbb4bde5c 56 #define SUPPORTED_BIOS_VER 0x000000
embeddedartists 26:a65fbb4bde5c 57 #define SUPPORTED_BIOS_MASK 0xff0000 // only look at the Major component
embeddedartists 26:a65fbb4bde5c 58 #define SUPPORTED_VERSION(__ver) (((__ver)&SUPPORTED_BIOS_MASK) == SUPPORTED_BIOS_VER)
embeddedartists 28:8ae20cb0b943 59
embeddedartists 28:8ae20cb0b943 60 #define MAC_IN_SDK
embeddedartists 28:8ae20cb0b943 61
embeddedartists 22:1a58a518435c 62 /******************************************************************************
embeddedartists 22:1a58a518435c 63 * Local variables
embeddedartists 22:1a58a518435c 64 *****************************************************************************/
embeddedartists 22:1a58a518435c 65
embeddedartists 22:1a58a518435c 66 /******************************************************************************
embeddedartists 28:8ae20cb0b943 67 * Global functions
embeddedartists 28:8ae20cb0b943 68 *****************************************************************************/
embeddedartists 28:8ae20cb0b943 69
embeddedartists 28:8ae20cb0b943 70 #if !defined(MAC_IN_SDK)
embeddedartists 28:8ae20cb0b943 71 /* The LPC4088QSB platform in the MBED SDK have defined the WEAK function
embeddedartists 28:8ae20cb0b943 72 * mbed_mac_address (ethernet_api.c) to read a unique MAC address from the
embeddedartists 28:8ae20cb0b943 73 * onboard EEPROM.
embeddedartists 28:8ae20cb0b943 74 * The LPC4088DM platform in the MBED SDK does not have the WEAK function
embeddedartists 28:8ae20cb0b943 75 * so it is implemented here instead. This version of the function will ask
embeddedartists 28:8ae20cb0b943 76 * the bios for a MAC address.
embeddedartists 28:8ae20cb0b943 77 */
embeddedartists 28:8ae20cb0b943 78 void mbed_mac_address(char *mac) {
embeddedartists 28:8ae20cb0b943 79 static char cache[6];
embeddedartists 28:8ae20cb0b943 80 static bool haveIt = false;
embeddedartists 28:8ae20cb0b943 81 if (!haveIt) {
embeddedartists 28:8ae20cb0b943 82 BiosLoader::instance().getMacAddress(cache);
embeddedartists 28:8ae20cb0b943 83 haveIt = true;
embeddedartists 28:8ae20cb0b943 84 }
embeddedartists 28:8ae20cb0b943 85 memcpy(mac, cache, 6);
embeddedartists 28:8ae20cb0b943 86 }
embeddedartists 28:8ae20cb0b943 87 #endif
embeddedartists 28:8ae20cb0b943 88
embeddedartists 28:8ae20cb0b943 89 /******************************************************************************
embeddedartists 22:1a58a518435c 90 * Private Functions
embeddedartists 22:1a58a518435c 91 *****************************************************************************/
embeddedartists 22:1a58a518435c 92
embeddedartists 28:8ae20cb0b943 93 // Called by the NVIC
embeddedartists 28:8ae20cb0b943 94 static void loader_i2c0_irq_handler()
embeddedartists 28:8ae20cb0b943 95 {
embeddedartists 28:8ae20cb0b943 96 BiosLoader::instance().handleI2CInterrupt();
embeddedartists 28:8ae20cb0b943 97 }
embeddedartists 28:8ae20cb0b943 98
embeddedartists 28:8ae20cb0b943 99
embeddedartists 22:1a58a518435c 100 // Function called from the BIOS
embeddedartists 22:1a58a518435c 101 static uint32_t readTimeMs()
embeddedartists 22:1a58a518435c 102 {
embeddedartists 22:1a58a518435c 103 return us_ticker_read()/1000;
embeddedartists 22:1a58a518435c 104 }
embeddedartists 22:1a58a518435c 105
embeddedartists 22:1a58a518435c 106
embeddedartists 22:1a58a518435c 107 BiosLoader::BiosLoader() :
embeddedartists 22:1a58a518435c 108 _initialized(false),
embeddedartists 22:1a58a518435c 109 _biosData(NULL),
embeddedartists 22:1a58a518435c 110 _conf(NULL),
embeddedartists 22:1a58a518435c 111 _confSize(0)
embeddedartists 22:1a58a518435c 112 {
embeddedartists 22:1a58a518435c 113 }
embeddedartists 22:1a58a518435c 114
embeddedartists 22:1a58a518435c 115 BiosLoader::~BiosLoader()
embeddedartists 22:1a58a518435c 116 {
embeddedartists 22:1a58a518435c 117 if (_biosData != NULL) {
embeddedartists 22:1a58a518435c 118 free(_biosData);
embeddedartists 22:1a58a518435c 119 _biosData = NULL;
embeddedartists 22:1a58a518435c 120 }
embeddedartists 22:1a58a518435c 121 if (_conf != NULL) {
embeddedartists 22:1a58a518435c 122 free(_conf);
embeddedartists 22:1a58a518435c 123 _conf = NULL;
embeddedartists 22:1a58a518435c 124 _confSize = 0;
embeddedartists 22:1a58a518435c 125 }
embeddedartists 22:1a58a518435c 126 }
embeddedartists 22:1a58a518435c 127
embeddedartists 22:1a58a518435c 128 DMBoard::BoardError BiosLoader::readBIOS(uint8_t** data, uint32_t* size)
embeddedartists 22:1a58a518435c 129 {
embeddedartists 22:1a58a518435c 130 DMBoard::BoardError err = DMBoard::Ok;
embeddedartists 22:1a58a518435c 131 BiosEEPROM eeprom;
embeddedartists 22:1a58a518435c 132 file_header_t fh;
embeddedartists 22:1a58a518435c 133
embeddedartists 22:1a58a518435c 134 if (_conf != NULL) {
embeddedartists 22:1a58a518435c 135 *data = _conf;
embeddedartists 22:1a58a518435c 136 *size = _confSize;
embeddedartists 22:1a58a518435c 137 return DMBoard::Ok;
embeddedartists 22:1a58a518435c 138 }
embeddedartists 22:1a58a518435c 139
embeddedartists 22:1a58a518435c 140 do {
embeddedartists 22:1a58a518435c 141 if (!eeprom.read(0, (char*)&fh, sizeof(file_header_t))) {
embeddedartists 22:1a58a518435c 142 resetI2C();
embeddedartists 22:1a58a518435c 143 if (!eeprom.read(0, (char*)&fh, sizeof(file_header_t))) {
embeddedartists 22:1a58a518435c 144 err = DMBoard::BiosStorageError;
embeddedartists 22:1a58a518435c 145 break;
embeddedartists 22:1a58a518435c 146 }
embeddedartists 22:1a58a518435c 147 }
embeddedartists 22:1a58a518435c 148
embeddedartists 22:1a58a518435c 149 if (fh.magic != BIOS_MAGIC) {
embeddedartists 22:1a58a518435c 150 err = DMBoard::BiosInvalidError;
embeddedartists 22:1a58a518435c 151 break;
embeddedartists 22:1a58a518435c 152 }
embeddedartists 22:1a58a518435c 153
embeddedartists 26:a65fbb4bde5c 154 if (!SUPPORTED_VERSION(fh.version)) {
embeddedartists 22:1a58a518435c 155 err = DMBoard::BiosVersionError;
embeddedartists 22:1a58a518435c 156 break;
embeddedartists 22:1a58a518435c 157 }
embeddedartists 22:1a58a518435c 158
embeddedartists 22:1a58a518435c 159 if ((fh.headerSize + fh.size) > BIOS_MAX_SIZE) {
embeddedartists 22:1a58a518435c 160 err = DMBoard::BiosInvalidError;
embeddedartists 22:1a58a518435c 161 break;
embeddedartists 22:1a58a518435c 162 }
embeddedartists 22:1a58a518435c 163
embeddedartists 22:1a58a518435c 164 _confSize = fh.headerSize + fh.size;
embeddedartists 22:1a58a518435c 165 _conf = (uint8_t*)malloc(MAX(_confSize,BIOS_RESERVED_CHUNK));
embeddedartists 22:1a58a518435c 166 if (_conf == NULL) {
embeddedartists 22:1a58a518435c 167 _confSize = 0;
embeddedartists 22:1a58a518435c 168 err = DMBoard::MemoryError;
embeddedartists 22:1a58a518435c 169 break;
embeddedartists 22:1a58a518435c 170 }
embeddedartists 22:1a58a518435c 171
embeddedartists 22:1a58a518435c 172 if (!eeprom.read(0, (char*)_conf, _confSize)) {
embeddedartists 22:1a58a518435c 173 err = DMBoard::BiosStorageError;
embeddedartists 22:1a58a518435c 174 break;
embeddedartists 22:1a58a518435c 175 }
embeddedartists 22:1a58a518435c 176
embeddedartists 22:1a58a518435c 177 uint32_t crc = crc_Buffer((uint32_t*)(&_conf[fh.headerSize]), fh.size/4);
embeddedartists 22:1a58a518435c 178 if (crc != fh.crc) {
embeddedartists 22:1a58a518435c 179 err = DMBoard::BiosInvalidError;
embeddedartists 22:1a58a518435c 180 break;
embeddedartists 22:1a58a518435c 181 }
embeddedartists 22:1a58a518435c 182
embeddedartists 22:1a58a518435c 183 // Bios header has been verified and seems ok
embeddedartists 22:1a58a518435c 184 *data = _conf;
embeddedartists 22:1a58a518435c 185 *size = _confSize;
embeddedartists 22:1a58a518435c 186 err = DMBoard::Ok;
embeddedartists 22:1a58a518435c 187 } while (false);
embeddedartists 22:1a58a518435c 188
embeddedartists 22:1a58a518435c 189 if (err != DMBoard::Ok) {
embeddedartists 22:1a58a518435c 190 if (_conf != NULL) {
embeddedartists 22:1a58a518435c 191 free(_conf);
embeddedartists 22:1a58a518435c 192 _conf = NULL;
embeddedartists 22:1a58a518435c 193 _confSize = 0;
embeddedartists 22:1a58a518435c 194 }
embeddedartists 22:1a58a518435c 195 }
embeddedartists 22:1a58a518435c 196
embeddedartists 22:1a58a518435c 197 return err;
embeddedartists 22:1a58a518435c 198 }
embeddedartists 22:1a58a518435c 199
embeddedartists 22:1a58a518435c 200 DMBoard::BoardError BiosLoader::params(bios_header_t** header, void** instanceData)
embeddedartists 22:1a58a518435c 201 {
embeddedartists 22:1a58a518435c 202 if (!_initialized) {
embeddedartists 22:1a58a518435c 203 DMBoard::BoardError err = init();
embeddedartists 22:1a58a518435c 204 if (err != DMBoard::Ok) {
embeddedartists 22:1a58a518435c 205 return err;
embeddedartists 22:1a58a518435c 206 }
embeddedartists 22:1a58a518435c 207 }
embeddedartists 22:1a58a518435c 208 if (_initialized) {
embeddedartists 22:1a58a518435c 209 *header = &_bios;
embeddedartists 22:1a58a518435c 210 *instanceData = _biosData;
embeddedartists 22:1a58a518435c 211 return DMBoard::Ok;
embeddedartists 22:1a58a518435c 212 } else {
embeddedartists 22:1a58a518435c 213 return DMBoard::BiosInvalidError;
embeddedartists 22:1a58a518435c 214 }
embeddedartists 22:1a58a518435c 215 }
embeddedartists 22:1a58a518435c 216
embeddedartists 22:1a58a518435c 217 DMBoard::BoardError BiosLoader::init()
embeddedartists 22:1a58a518435c 218 {
embeddedartists 22:1a58a518435c 219 DMBoard::BoardError err = DMBoard::Ok;
embeddedartists 22:1a58a518435c 220 if (!_initialized) {
embeddedartists 22:1a58a518435c 221 do {
embeddedartists 22:1a58a518435c 222
embeddedartists 22:1a58a518435c 223 // Get the display bios from the DMBoard. DMBoard will have verified it
embeddedartists 22:1a58a518435c 224 // and will keep it in RAM so there is no need to copy it.
embeddedartists 22:1a58a518435c 225 uint8_t* p = NULL;
embeddedartists 22:1a58a518435c 226 uint32_t size = 0;
embeddedartists 22:1a58a518435c 227 err = readBIOS(&p, &size);
embeddedartists 29:b1ec19000e15 228 if (err != DMBoard::Ok) {
embeddedartists 22:1a58a518435c 229 break;
embeddedartists 22:1a58a518435c 230 }
embeddedartists 22:1a58a518435c 231
embeddedartists 28:8ae20cb0b943 232 #if defined(MAC_IN_SDK)
embeddedartists 27:0499c29688cc 233 // The BIOS has been read so we know that the I2C bus is working. After the
embeddedartists 27:0499c29688cc 234 // BIOS is "started" it will take ownership of the bus and it can cause
embeddedartists 27:0499c29688cc 235 // problems for other peripherals on it. The only other peripheral today
embeddedartists 27:0499c29688cc 236 // is the EEPROM with the MAC address. It is read by mbed_mac_address() in
embeddedartists 27:0499c29688cc 237 // ethernet_api.c in the SDK and it will be cached. By reading it here now
embeddedartists 27:0499c29688cc 238 // we prevent future access to the I2C bus.
embeddedartists 27:0499c29688cc 239 char mac[6] = {0};
embeddedartists 27:0499c29688cc 240 mbed_mac_address(mac);
embeddedartists 28:8ae20cb0b943 241 #endif
embeddedartists 27:0499c29688cc 242
embeddedartists 22:1a58a518435c 243 // Extract the function pointers so that they can be modified to match the
embeddedartists 22:1a58a518435c 244 // actual location of the code
embeddedartists 22:1a58a518435c 245 file_header_t* file_header = (file_header_t*)p;
embeddedartists 22:1a58a518435c 246 memcpy(&_bios, &file_header->header, sizeof(bios_header_t));
embeddedartists 22:1a58a518435c 247
embeddedartists 22:1a58a518435c 248 // Allocate memory for the BIOS instance data
embeddedartists 22:1a58a518435c 249 _biosData = malloc(file_header->paramSize);
embeddedartists 22:1a58a518435c 250 if (_biosData == NULL) {
embeddedartists 22:1a58a518435c 251 err = DMBoard::MemoryError;
embeddedartists 22:1a58a518435c 252 break;
embeddedartists 22:1a58a518435c 253 }
embeddedartists 22:1a58a518435c 254
embeddedartists 22:1a58a518435c 255 // All offsets must be moved by two factors:
embeddedartists 22:1a58a518435c 256 // 1) The position of the code in RAM (location of "p")
embeddedartists 22:1a58a518435c 257 // 2) The header size (the code/data comes after it)
embeddedartists 22:1a58a518435c 258 uint32_t offset = ((uint32_t)p) + file_header->headerSize;
embeddedartists 22:1a58a518435c 259 uint32_t* functions = (uint32_t*)&_bios;
embeddedartists 29:b1ec19000e15 260 for (uint32_t i = 0; i < (sizeof(bios_header_t)/sizeof(uint32_t)); i++) {
embeddedartists 22:1a58a518435c 261 functions[i] += offset;
embeddedartists 22:1a58a518435c 262 }
embeddedartists 22:1a58a518435c 263
embeddedartists 22:1a58a518435c 264 #if defined(DM_BOARD_BIOS_DEVELOPMENT)
embeddedartists 22:1a58a518435c 265 // This requires that the project contains the source code for the BIOS
embeddedartists 24:9a677afc86f1 266 const char* msg;
embeddedartists 26:a65fbb4bde5c 267 uint32_t tmp = 0;
embeddedartists 26:a65fbb4bde5c 268 bios_debug_aid(&_bios, &msg, &tmp);
embeddedartists 26:a65fbb4bde5c 269 if (tmp > file_header->paramSize) {
embeddedartists 26:a65fbb4bde5c 270 free(_biosData);
embeddedartists 26:a65fbb4bde5c 271 _biosData = malloc(tmp);
embeddedartists 26:a65fbb4bde5c 272 if (_biosData == NULL) {
embeddedartists 26:a65fbb4bde5c 273 err = DMBoard::MemoryError;
embeddedartists 26:a65fbb4bde5c 274 break;
embeddedartists 26:a65fbb4bde5c 275 }
embeddedartists 26:a65fbb4bde5c 276 }
embeddedartists 24:9a677afc86f1 277 DMBoard::instance().logger()->printf("BIOS info: %s\n", msg);
embeddedartists 22:1a58a518435c 278 #endif
embeddedartists 22:1a58a518435c 279
embeddedartists 22:1a58a518435c 280 // Prepare the BIOS instance data before calling the first function
embeddedartists 22:1a58a518435c 281 BiosError_t e = _bios.initParams(_biosData, SystemCoreClock, PeripheralClock, wait_us, readTimeMs);
embeddedartists 22:1a58a518435c 282 if (e != BiosError_Ok) {
embeddedartists 22:1a58a518435c 283 err = DMBoard::BiosInvalidError;
embeddedartists 22:1a58a518435c 284 break;
embeddedartists 22:1a58a518435c 285 }
embeddedartists 28:8ae20cb0b943 286
embeddedartists 28:8ae20cb0b943 287 // Setup the mandatory I2C0 interrupt handler after initParams but before all other calls
embeddedartists 28:8ae20cb0b943 288 NVIC_DisableIRQ(I2C0_IRQn);
embeddedartists 28:8ae20cb0b943 289 NVIC_SetVector(I2C0_IRQn, (uint32_t)loader_i2c0_irq_handler);
embeddedartists 28:8ae20cb0b943 290 NVIC_EnableIRQ(I2C0_IRQn);
embeddedartists 22:1a58a518435c 291
embeddedartists 22:1a58a518435c 292 _initialized = true;
embeddedartists 22:1a58a518435c 293 } while(0);
embeddedartists 22:1a58a518435c 294 }
embeddedartists 22:1a58a518435c 295 return err;
embeddedartists 22:1a58a518435c 296 }
embeddedartists 22:1a58a518435c 297
embeddedartists 22:1a58a518435c 298 void BiosLoader::resetI2C()
embeddedartists 22:1a58a518435c 299 {
embeddedartists 22:1a58a518435c 300 DMBoard::instance().logger()->printf("BiosLoader::resetI2C()\n");
embeddedartists 22:1a58a518435c 301 DigitalOut reset(P0_23);
embeddedartists 22:1a58a518435c 302 reset = 0;
embeddedartists 22:1a58a518435c 303 wait_ms(1);
embeddedartists 22:1a58a518435c 304 reset = 1;
embeddedartists 22:1a58a518435c 305 wait_ms(10);
embeddedartists 22:1a58a518435c 306 }
embeddedartists 22:1a58a518435c 307
embeddedartists 22:1a58a518435c 308
embeddedartists 22:1a58a518435c 309 /******************************************************************************
embeddedartists 22:1a58a518435c 310 * Public Functions
embeddedartists 22:1a58a518435c 311 *****************************************************************************/
embeddedartists 22:1a58a518435c 312
embeddedartists 22:1a58a518435c 313 bool BiosLoader::isKnownSPIFIMemory(uint8_t mfgr, uint8_t devType, uint8_t devID, uint32_t memSize, uint32_t* eraseBlockSize)
embeddedartists 22:1a58a518435c 314 {
embeddedartists 22:1a58a518435c 315 if (!_initialized) {
embeddedartists 22:1a58a518435c 316 DMBoard::BoardError err = init();
embeddedartists 22:1a58a518435c 317 if (err != DMBoard::Ok) {
embeddedartists 22:1a58a518435c 318 return false;
embeddedartists 22:1a58a518435c 319 }
embeddedartists 22:1a58a518435c 320 }
embeddedartists 22:1a58a518435c 321 if (_initialized) {
embeddedartists 22:1a58a518435c 322 bool known = false;
embeddedartists 22:1a58a518435c 323 BiosError_t err = _bios.spifiIsSupported(_biosData, mfgr,devType,devID,memSize,&known,eraseBlockSize);
embeddedartists 22:1a58a518435c 324 if (err == BiosError_Ok) {
embeddedartists 22:1a58a518435c 325 return known;
embeddedartists 22:1a58a518435c 326 }
embeddedartists 22:1a58a518435c 327 }
embeddedartists 22:1a58a518435c 328 return false;
embeddedartists 22:1a58a518435c 329 }
embeddedartists 28:8ae20cb0b943 330
embeddedartists 28:8ae20cb0b943 331 void BiosLoader::getMacAddress(char mac[6])
embeddedartists 28:8ae20cb0b943 332 {
embeddedartists 28:8ae20cb0b943 333 if (!_initialized) {
embeddedartists 28:8ae20cb0b943 334 init();
embeddedartists 28:8ae20cb0b943 335 }
embeddedartists 28:8ae20cb0b943 336 if (_initialized) {
embeddedartists 28:8ae20cb0b943 337 BiosError_t err = _bios.ethernetMac(_biosData, mac);
embeddedartists 28:8ae20cb0b943 338 if (err == BiosError_Ok) {
embeddedartists 28:8ae20cb0b943 339 return;
embeddedartists 28:8ae20cb0b943 340 }
embeddedartists 28:8ae20cb0b943 341 }
embeddedartists 28:8ae20cb0b943 342
embeddedartists 28:8ae20cb0b943 343 // We always consider the MAC address to be retrieved even though
embeddedartists 28:8ae20cb0b943 344 // reading is failed. If it wasn't possible to read then the default
embeddedartists 28:8ae20cb0b943 345 // address will be used.
embeddedartists 28:8ae20cb0b943 346 mac[0] = 0x00;
embeddedartists 28:8ae20cb0b943 347 mac[1] = 0x02;
embeddedartists 28:8ae20cb0b943 348 mac[2] = 0xF7;
embeddedartists 28:8ae20cb0b943 349 mac[3] = 0xF0;
embeddedartists 28:8ae20cb0b943 350 mac[4] = 0x00;
embeddedartists 28:8ae20cb0b943 351 mac[5] = 0x01;
embeddedartists 28:8ae20cb0b943 352 }
embeddedartists 28:8ae20cb0b943 353
embeddedartists 28:8ae20cb0b943 354 void BiosLoader::handleI2CInterrupt()
embeddedartists 28:8ae20cb0b943 355 {
embeddedartists 28:8ae20cb0b943 356 SET_MEAS_PIN_2();
embeddedartists 28:8ae20cb0b943 357 _bios.i2cIRQHandler(_biosData);
embeddedartists 28:8ae20cb0b943 358 CLR_MEAS_PIN_2();
embeddedartists 28:8ae20cb0b943 359 }
embeddedartists 28:8ae20cb0b943 360