132 lines
2.5 KiB
C
132 lines
2.5 KiB
C
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/*
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* nand_blk.h for SUNXI NAND .
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*
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* Copyright (C) 2016 Allwinner.
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*
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#define OTP_IOCTL_READ IO('V', 23)
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#define OTP_IOCTL_WRITE _IO('V', 24)
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#define OTP_IOCTL_READ_UID _IO('V', 25)
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#define OTP_IOCTL_PROTECT _IO('V', 26)
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struct otpblc_op_t {
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int block;
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int page;
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unsigned char *buf;
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unsigned int len;
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};
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int main(int argc, char **argv)
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{
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int fd;
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int ret;
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unsigned char buf[2048] = {0};
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struct otpblc_op_t otp_arg;
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int i = 0;
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int write = 0;
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int protect_write = 0;
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int uid = 0;
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printf("ver0.3\n");
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if (argc != 5) {
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printf("arg error\n");
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return -1;
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}
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printf("%s\n", argv[1]);
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if (!strncmp(argv[1], "w", 1)) {
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write = 1;
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printf("normal write\n");
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} else if (!strncmp(argv[1], "pw", 2)) {
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protect_write = 1;
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write = 1;
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printf("protect write\n");
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} else if (!strncmp(argv[1], "r", 1)) {
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printf("read\n");
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} else if (!strncmp(argv[1], "u", 1)) {
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printf("uid\n");
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uid = 1;
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} else {
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printf("unknow arg\n");
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return -1;
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}
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printf("block%d\n", atoi(argv[2]));
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printf("page%d\n", atoi(argv[3]));
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printf("len%d\n", atoi(argv[4]));
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fd = open("/dev/nanda", O_RDWR);
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if (fd < 0) {
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perror("open");
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exit(-2);
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}
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if (!write) {
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printf("in read\n");
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otp_arg.block = atoi(argv[2]);
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otp_arg.page = atoi(argv[3]);
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otp_arg.len = atoi(argv[4]);
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otp_arg.buf = buf;
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if (uid) {
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ret = ioctl(fd, OTP_IOCTL_READ_UID, &otp_arg);
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} else {
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ret = ioctl(fd, OTP_IOCTL_READ, &otp_arg);
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}
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if (ret) {
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perror("ioctl error:");
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exit(-4);
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}
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for (i = 0; i < 2048/4; i++) {
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if (!(i%4))
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printf("\n");
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printf("0x%8x ", *((unsigned int *) &buf[i*4]));
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}
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} else {
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printf("in write\n");
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memset(buf, 0x55, 2048);
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otp_arg.block = atoi(argv[2]);
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otp_arg.page = atoi(argv[3]);
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otp_arg.len = atoi(argv[4]);
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otp_arg.buf = buf;
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#if 0
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for (i = 0; i < 2048/4; i++) {
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if (!(i%4))
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printf("\n");
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printf("0x%x ", *((unsigned int *) &buf[i*4]));
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}
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#endif
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if (protect_write == 1) {
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ret = ioctl(fd, OTP_IOCTL_PROTECT, &otp_arg);
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printf("protect write\n");
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} else {
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ret = ioctl(fd, OTP_IOCTL_WRITE, &otp_arg);
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}
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if (ret) {
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perror("ioctl error:");
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exit(-4);
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}
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}
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close(fd);
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return 0;
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}
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