diff options
Diffstat (limited to 'meta-amd-bsp/recipes-applications/spi-test/files/spirom-test.c')
| -rw-r--r-- | meta-amd-bsp/recipes-applications/spi-test/files/spirom-test.c | 798 |
1 files changed, 798 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-applications/spi-test/files/spirom-test.c b/meta-amd-bsp/recipes-applications/spi-test/files/spirom-test.c new file mode 100644 index 00000000..22c90036 --- /dev/null +++ b/meta-amd-bsp/recipes-applications/spi-test/files/spirom-test.c @@ -0,0 +1,798 @@ +/***************************************************************************** +* +* Copyright (c) 2014, Advanced Micro Devices, Inc. +* 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 following disclaimer. +* * 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. +* * Neither the name of Advanced Micro Devices, Inc. nor the names of +* its contributors may be used to endorse or promote products derived +* from this software without specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. 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 <stdint.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <string.h> +#include <dirent.h> +#include <signal.h> + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/stat.h> + +#include <readline/readline.h> + +#include "spirom.h" + +#define SPI_APP_VERSION "1.0" + +static int device_opened = 0; +static char filename[20]; +static int fd = -1; + +char *show_prompt(void) +{ + return "$ "; +} + +void sighandler(int sig) +{ + /* Do nothing. That is the idea. */ +} + +void show_license(void) +{ + printf("/*****************************************************************************\n" + "*\n" + "* Copyright (c) 2014, Advanced Micro Devices, Inc.\n" + "* All rights reserved.\n" + "*\n" + "* Redistribution and use in source and binary forms, with or without\n" + "* modification, are permitted provided that the following conditions are met:\n" + "* * Redistributions of source code must retain the above copyright\n" + "* notice, this list of conditions and the following disclaimer.\n" + "* * Redistributions in binary form must reproduce the above copyright\n" + "* notice, this list of conditions and the following disclaimer in the\n" + "* documentation and/or other materials provided with the distribution.\n" + "* * Neither the name of Advanced Micro Devices, Inc. nor the names of\n" + "* its contributors may be used to endorse or promote products derived\n" + "* from this software without specific prior written permission.\n" + "*\n" + "* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n" + "* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n" + "* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n" + "* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY\n" + "* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n" + "* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n" + "* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n" + "* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" + "* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\n" + "* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" + "*\n" + "*\n" + "***************************************************************************/\n"); +} + +void print_usage(void) +{ + printf("\nCommands Supported ->\n"); + printf(" enumerate : List all SPI device nodes available\n"); + printf(" setdevice <dev_id> : Set the SPI device number to access\n"); + printf(" wren : Enable Write operation on SPI device\n"); + printf(" wrdi : Disable Write operation on SPI device\n"); + printf(" chiperase : Erase entire ROM chip\n"); + printf(" rdsr : Read status register of ROM device\n"); + printf(" rdid : Read device identification string\n"); + printf(" sectorerase <addr> <num_sectors> : Erase a fixed number of sectors starting at the address\n" + " specified\n"); + printf(" blockerase <addr> <num_blocks> : Erase a fixed number of blocks starting at the address\n" + " specified\n"); + printf(" read <addr> <num_bytes> <filename> : Read a fixed number of bytes starting at address\n" + " specified, and output the contents into file\n"); + printf(" write <addr> <num_bytes> <filename> : Read a fixed number of bytes from file and output\n" + " the contents to the device starting at the address\n" + " specified\n"); + printf(" license : Displays the terms of LICENSE for this application\n"); + printf(" help : Displays help text\n"); + printf(" exit : Exits the application\n\n"); +} + +void parse_cmd(const char *cmdline) +{ + struct spi_ioc_transfer tr; + unsigned int bytes_chunks; + unsigned int remaining_bytes; + int addr; + int ret; + + if (strncmp(cmdline, "enumerate", 9) == 0) { + DIR *dir; + struct dirent *dir_entry; + int device_found = 0; + + /* Get the directory handle */ + if ((dir = opendir("/dev")) == NULL) { + printf("\n\nFailed to open directory /dev. Probably you " + "do not have right privilege!\n\n"); + exit(EXIT_FAILURE); + } + + /* Iterate over all the directory entries */ + while ((dir_entry = readdir(dir)) != NULL) { + /* + * If the file is a character device, and its signature + * matches spirom, then we print the corresponding file. + */ + if ((dir_entry->d_type == DT_CHR) && + (strncmp(dir_entry->d_name, "spirom", 6) == 0)) { + printf("/dev/%s\n", dir_entry->d_name); + device_found = 1; + } + } + + printf("\n"); + + /* + * In case we did not find even a single entry, we print a + * message and exit. + */ + if (!device_found) { + printf("\n\nNo spirom device nodes found, load spirom " + "kernel module and try again\n\n"); + exit(EXIT_FAILURE); + } + } else if (strncmp(cmdline, "setdevice", 9) == 0) { + char input[2 + 1]; + int file_desc; + + cmdline += 10; + memset(input, 0, 3); + if (sscanf(cmdline, "%s", input) < 1) { + printf("\nInvalid inputs, please try again\n\n"); + return; + } + + memset(filename, 0, 20); + snprintf(filename, 19, "/dev/spirom%s", input); + file_desc = open(filename, O_RDWR); + if (file_desc < 0) { + printf("\nError opening file %s\n\n", filename); + return; + } + + /* Once we have validated inputs, we store them into the global + * variables used at other places in the program. + */ + fd = file_desc; + device_opened = 1; + printf("\nSPI device set to /dev/spirom%s\n\n", input); + } else if (strncmp(cmdline, "wren", 4) == 0) { + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + /* command without data */ + tr.buf[0] = ROM_WREN; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) + printf("\nError executing WREN command\n\n"); + else + printf("\n...WREN completed successfully\n\n"); + } else if (strncmp(cmdline, "wrdi", 4) == 0) { + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + /* command without data */ + tr.buf[0] = ROM_WRDI; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) + printf("\nError executing WRDI command\n\n"); + else + printf("\n...WRDI completed successfully\n\n"); + } else if (strncmp(cmdline, "chiperase", 9) == 0) { + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n");; + return; + } else if ((tr.buf[1] & 0x02) == 0x00) { + printf("\nCannot execute CHIPERASE command, write is disabled\n\n"); + return; + } + + /* Command without data */ + tr.buf[0] = ROM_CHIP_ERASE; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing CHIPERASE command\n\n"); + return; + } + + printf("\n\nCHIPERASE operation in progress, please do not " + " stop in between.\n\n"); + + /* Make sure WIP has been reset */ + while (1) { + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } + + if ((tr.buf[1] & 0x01) == 0x00) + break; + } + + printf("\n\n...CHIPERASE completed successfully\n\n"); + /* Restore signal handler to default */ + } else if (strncmp(cmdline, "rdsr", 4) == 0) { + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + /* Command with response */ + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } + + /* + * The 1-byte response will be stored in tr.buf, + * so print it out + */ + printf("\nRDSR command returned: 0x%.2x\n\n", tr.buf[1]); + } else if (strncmp(cmdline, "rdid", 4) == 0) { + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + /* Command with response */ + tr.buf[0] = ROM_RDID; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 3; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDID command\n\n"); + return; + } + + /* + * The 3-bytes response will be stored in tr.buf, + * so print it out + */ + printf("\nRDID command returned: 0x%.2x%.2x%.2x\n", tr.buf[1], + tr.buf[2], tr.buf[3]); + } else if (strncmp(cmdline, "sectorerase", 11) == 0) { + int nsectors; + int i; + + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + cmdline += 12; + if (sscanf(cmdline, "0x%x 0x%x", &addr, &nsectors) < 2) { + printf("\nInvalid inputs, please try again\n\n"); + return; + } + + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } else if ((tr.buf[1] & 0x02) == 0x00) { + printf("\nCannot execute SECTORERASE command, write is disabled\n\n"); + return; + } + + printf("\n\nSECTORERASE operation in progress, please do not " + " stop in between.\n\n"); + + for (i = 0; i < nsectors; i++) { + /* Write Enable before Sector Erase */ + tr.buf[0] = ROM_WREN; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing WREN command\n\n"); + return; + } + + /* Command with address but no data */ + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_SECTOR_ERASE; + tr.buf[3] = addr & 0xff; + tr.buf[2] = (addr >> 8) & 0xff; + tr.buf[1] = (addr >> 16) & 0xff; + tr.addr_present = 1; + tr.direction = 0; + tr.len = 0; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing SECTORERASE command\n\n"); + return; + } + + /* point to the next 4k sector */ + addr += 4 * 1024; + + /* + * Before the next loop, we need to make sure that WIP + * bit in the output of RDSR has been reset. + */ + while (1) { + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } + + if ((tr.buf[1] & 0x01) == 0x00) + break; + } + } + + printf("\n\n...SECTORERASE completed successfully\n\n"); + } else if (strncmp(cmdline, "blockerase", 10) == 0) { + int nblocks; + int i; + + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + cmdline += 11; + if (sscanf(cmdline, "0x%x 0x%x", &addr, &nblocks) < 2) { + printf("\nInvalid inputs, please try again\n\n"); + return; + } + + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } else if ((tr.buf[1] & 0x02) == 0x00) { + printf("\nError executing BLOCKERASE command, write is disabled\n\n"); + return; + } + + printf("\n\nBLOCKERASE operation in progress, please do not " + " stop in between.\n\n"); + + for (i = 0; i < nblocks; i++) { + /* Write Enable before Block Erase */ + tr.buf[0] = ROM_WREN; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing WREN command\n\n"); + return; + } + + /* Command with address but no data */ + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_BLOCK_ERASE; + tr.buf[3] = addr & 0xff; + tr.buf[2] = (addr >> 8) & 0xff; + tr.buf[1] = (addr >> 16) & 0xff; + tr.addr_present = 1; + tr.direction = 0; + tr.len = 0; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing BLOCKERASE command\n\n"); + return; + } + + /* point to the next 64k block */ + addr += 64 * 1024; + + /* + * Before the next loop, we need to make sure that WIP + * bit in the output of RDSR has been reset. + */ + while (1) { + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } + + if ((tr.buf[1] & 0x01) == 0x00) + break; + } + } + + printf("\n\n...BLOCKERASE completed successfully\n\n"); + } else if (strncmp(cmdline, "read", 4) == 0) { + int nbytes; + int outfile_fd; + int i; + + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + cmdline += 5; + memset(filename, 0, 20); + if (sscanf(cmdline, "0x%x 0x%x %s", &addr, &nbytes, filename) < 3) { + printf("\nInvalid inputs, please try again\n\n"); + return; + } + + /* + * Open the output file for writing. Create a new file if not + * there, and empty the file before writing if file already + * exists. + */ + outfile_fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644); + if (outfile_fd < 0) { + printf("\nError opening file %s for writing\n\n", filename); + return; + } + + /* + * We will break down the bytes to be received in chunks of + * of 64-bytes. Data might not be a even multiple of 64. So + * in that case, we will have some remaining bytes <4. We + * handle that separately. + */ + bytes_chunks = nbytes / 64; + remaining_bytes = nbytes % 64; + + printf("\n\nREAD operation in progress.\n\n"); + + for (i = 0; i < bytes_chunks; i++) { + /* Command with address and data */ + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_READ; + tr.direction = RECEIVE; + /* + * We will store the address into the buffer in little + * endian order. + */ + tr.buf[3] = addr & 0xff; + tr.buf[2] = (addr >> 8) & 0xff; + tr.buf[1] = (addr >> 16) & 0xff; + tr.len = 64; + tr.addr_present = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing READ command\n\n"); + return; + } + + /* Write the data read to output file */ + if (write(outfile_fd, &tr.buf[4], tr.len) < 0) { + printf("\nError writing to file %s\n\n", filename); + return; + } + addr += 64; + } + + if (remaining_bytes) { + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_READ; + tr.direction = RECEIVE; + tr.buf[3] = addr & 0xff; + tr.buf[2] = (addr >> 8) & 0xff; + tr.buf[1] = (addr >> 16) & 0xff; + tr.len = remaining_bytes; + tr.addr_present = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing READ command\n\n"); + return; + } + + if (write(outfile_fd, &tr.buf[4], tr.len) < 0) { + printf("\nError writing to file %s\n\n", filename); + return; + } + } + + printf("\n\n...READ completed successfully\n\n"); + close(outfile_fd); + } else if (strncmp(cmdline, "write", 5) == 0) { + int nbytes; + int infile_fd; + int i; + + if (!device_opened) { + printf("\nSPI device needs to be set before you can " + "perform this operation\n\n"); + return; + } + + cmdline += 6; + memset(filename, 0, 20); + if (sscanf(cmdline, "0x%x 0x%x %s", &addr, &nbytes, filename) < 3) { + printf("\nInvalid inputs, please try again\n\n"); + return; + } + + /* Open the input file for reading*/ + infile_fd = open(filename, O_RDONLY); + if (infile_fd < 0) { + printf("\nError opening file %s for reading\n\n", filename); + return; + } + + /* + * We will break down the bytes to be transmitted in chunks of + * of 64-bytes. Like for read, we might not have data in an + * even multiple of 64 bytes. So we will handle the remaining + * bytes in the end. + */ + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } else if ((tr.buf[1] & 0x02) == 0x00) { + printf("\nCannot execute WRITE command, write is disabled\n\n"); + return; + } + + bytes_chunks = nbytes / 64; + remaining_bytes = nbytes % 64; + + printf("\n\nWRITE operation in progress, please do not " + " stop in between.\n\n"); + + for (i = 0; i < bytes_chunks; i++) { + tr.buf[0] = ROM_WREN; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing WREN command\n\n"); + return; + } + + /* Command with data and address */ + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_WRITE; + tr.direction = TRANSMIT; + /* + * We will store the address into the buffer in little + * endian order. + */ + tr.buf[3] = addr & 0xff; + tr.buf[2] = (addr >> 8) & 0xff; + tr.buf[1] = (addr >> 16) & 0xff; + tr.len = 64; + tr.addr_present = 1; + + /* Read 64 bytes from input file to buffer */ + if (read(infile_fd, &tr.buf[4], tr.len) < 0) { + printf("\nError reading from file %s\n\n", filename); + return; + } + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing WRITE command\n\n"); + return; + } + + addr += 64; + + /* + * Before the next loop, we need to make sure that WIP + * bit in the output of RDSR has been reset. + */ + while (1) { + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } + + if ((tr.buf[1] & 0x01) == 0x00) + break; + } + } + + if (remaining_bytes) { + tr.buf[0] = ROM_WREN; + tr.direction = 0; + tr.len = 0; + tr.addr_present = 0; + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing WREN command\n\n"); + return; + } + + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_WRITE; + tr.direction = TRANSMIT; + tr.buf[3] = addr & 0xff; + tr.buf[2] = (addr >> 8) & 0xff; + tr.buf[1] = (addr >> 16) & 0xff; + tr.len = remaining_bytes; + tr.addr_present = 1; + + if (read(infile_fd, &tr.buf[4], tr.len) < 0) { + printf("\nError reading from file %s\n\n", filename); + return; + } + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing WRITE command\n\n"); + return; + } + + while (1) { + memset(&tr, 0, sizeof(struct spi_ioc_transfer)); + tr.buf[0] = ROM_RDSR; + tr.direction = RECEIVE; + tr.addr_present = 0; + tr.len = 1; + + ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); + if (ret < 1) { + printf("\nError executing RDSR command\n\n"); + return; + } + + if ((tr.buf[1] & 0x01) == 0x00) + break; + } + } + + printf("\n\n...WRITE completed successfully\n\n"); + close(infile_fd); + } else if (strncmp(cmdline, "license", 7) == 0) { + show_license(); + } else if (strncmp(cmdline, "exit", 4) == 0) { + printf("\nExiting...\n"); + close(fd); + exit(EXIT_SUCCESS); + } else if (strncmp(cmdline, "help", 4) == 0) { + print_usage(); + } else { + printf("\nUnknown command\n"); + print_usage(); + } +} + +int main(void) +{ + char *cmdline= NULL; + + printf("SPI sample application version: %s\n", SPI_APP_VERSION); + printf("Copyright (c) 2014, Advanced Micro Devices, Inc.\n" + "This sample application comes with ABSOLUTELY NO WARRANTY;\n" + "This is free software, and you are welcome to redistribute it\n" + "under certain conditions; type `license` for details.\n\n"); + + /* Set the signal handler */ + signal(SIGINT, sighandler); + + while (1) { + cmdline = readline(show_prompt()); + parse_cmd(cmdline); + /* Free the memory malloc'ed by readline */ + free(cmdline); + } + + /* Restore the default signal handler */ + signal(SIGINT, SIG_DFL); + + /* Should never reach here */ + return 0; +} |