138 lines
5.1 KiB
C
138 lines
5.1 KiB
C
/*****************************************************************************
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* File: fm10k-dump.c
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* Creation Date: December 16, 2020
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* Description: Utility to dump Non Volatile Memory on SPI for FM10K devices. Requires FM10K kernel module running with UIO enabled.
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* Compile: make fm10k-dump
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* Usage: ./fm10k-dump </dev/uio0> <output.bin> [readSizeInMegabits=8]
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*
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* Copyright (c) 2014 - 2015, Intel Corporation
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* Copyright (c) 2020, FM10K-Documentation Contributors
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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 following disclaimer.
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* * 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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* * Neither the name of the copyright holders nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "fm10k.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <fcntl.h>
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int main(int argc, char** argv){
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int fdBAR4;
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FILE* fdOutput;
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if(argc < 2){
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printf("Usage: %s <output.bin> [forceSizeInMegabits, default 8]\n", argv[0]);
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return 1;
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}
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fdOutput = fopen(argv[1], "wb");
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if(fdOutput == NULL){
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printf("Could not create %s\n", argv[1]);
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return 1;
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}
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FM10K_PCI_DEVICE device = fm10k_pci_findDevice();
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if(device.vendor == 0){
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printf("Unable to find FM10K device with BAR4 port access. Check bifurcation settings?\n");
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return 1;
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}
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fdBAR4 = open(device.bar4Path, O_RDWR);
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if(fdBAR4 <= 0){
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printf("Unable to open BAR4 resource %s to read NVM\n", device.bar4Path);
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return 1;
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}
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void* memmapAddr;
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memmapAddr = mmap(NULL, FM10K_BAR4_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fdBAR4, 0);
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if (memmapAddr == MAP_FAILED) {
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printf("Unable to map BAR4 resource %s to read NVM\n", device.bar4Path);
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close(fdBAR4);
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return 1;
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}
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SPI_COMMAND_READ_MANUFACTURER_RESULT manufacturerInfo = fm10k_mem_spi_ReadManufacturerData((uintptr_t) memmapAddr);
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if(manufacturerInfo.value == 0){
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printf("Error getting manufacturer information\n");
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return 1;
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}
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printf("Manufacturer Info 0x%08x :: JEDEC Manufacturer ID 0x%02x family 0x%02x density 0x%02x %02x:%02x\n", manufacturerInfo.value, manufacturerInfo.fields.manufacturerId, manufacturerInfo.fields.familyCode, manufacturerInfo.fields.densityCode, manufacturerInfo.fields.subCode, manufacturerInfo.fields.productVariant);
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unsigned int mbitsToRead = 8;
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const KNOWN_FLASH_DEVICE* knownFlashDevice = getKnownFlashFromManufacturerData(manufacturerInfo);
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if(knownFlashDevice != NULL){
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printf("Device: %s\n", knownFlashDevice->name);
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mbitsToRead = knownFlashDevice->sizeInMbit;
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}else{
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printf("Device: Unknown, defaulting %uMbit size\n", mbitsToRead);
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}
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if(argc > 2){
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if(mbitsToRead != 8){
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printf("WARNING: %uMbit size was already auto-detected\n", mbitsToRead);
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}
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mbitsToRead = strtoul(argv[2], NULL, 10);
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printf("Forcing %uMbit size\n", mbitsToRead);
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}
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if(mbitsToRead > 1024){
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printf("Too many MBit: %u\n", mbitsToRead);
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return 1;
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}
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if(mbitsToRead < 8){
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printf("Too few MBit: %u\n", mbitsToRead);
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return 1;
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}
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uint32_t bootImageSize = (mbitsToRead * 1024 * 1024) / 8;
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uint8_t* value = malloc(bootImageSize);
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uint32_t strideSize = 512;
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for(uint32_t addr = 0; addr < bootImageSize; addr += strideSize){
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printf("\rread @ 0x%08x / 0x%08x %d bytes", addr, bootImageSize, strideSize);
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if(fm10k_mem_spi_ReadFlash((uintptr_t) memmapAddr, addr, value + addr, strideSize)){
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return 2;
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}
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}
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fwrite(value, 1, bootImageSize, fdOutput);
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free(value);
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fclose(fdOutput);
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printf("\nRead %u bytes\n", bootImageSize);
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return 0;
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} |