-/*\r
- * calculate ecc code for nand flash\r
- *\r
- * Copyright (C) 2008 yajin <yajin@vm-kernel.org>\r
- * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>\r
- *\r
- * This program is free software; you can redistribute it and/or\r
- * modify it under the terms of the GNU General Public License as\r
- * published by the Free Software Foundation; either version 2 or\r
- * (at your option) version 3 of the License.\r
- *\r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,\r
- * MA 02111-1307 USA\r
- */\r
-\r
-\r
-#include <sys/types.h>\r
-#include <sys/stat.h>\r
-#include <unistd.h>\r
-#include <stdlib.h>\r
-#include <stdint.h>\r
-#include <fcntl.h>\r
-#include <stdio.h>\r
-\r
-#define DEF_NAND_PAGE_SIZE 2048\r
-#define DEF_NAND_OOB_SIZE 64\r
-#define DEF_NAND_ECC_OFFSET 0x28\r
-\r
-static int page_size = DEF_NAND_PAGE_SIZE;\r
-static int oob_size = DEF_NAND_OOB_SIZE;\r
-static int ecc_offset = DEF_NAND_ECC_OFFSET;\r
-\r
-/*\r
- * Pre-calculated 256-way 1 byte column parity\r
- */\r
-static const uint8_t nand_ecc_precalc_table[] = {\r
- 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,\r
- 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,\r
- 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,\r
- 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,\r
- 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,\r
- 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,\r
- 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,\r
- 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,\r
- 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,\r
- 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,\r
- 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,\r
- 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,\r
- 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,\r
- 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,\r
- 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,\r
- 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00\r
-};\r
-\r
-/**\r
- * nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256-byte block\r
- * @dat: raw data\r
- * @ecc_code: buffer for ECC\r
- */\r
-int nand_calculate_ecc(const uint8_t *dat,\r
- uint8_t *ecc_code)\r
-{\r
- uint8_t idx, reg1, reg2, reg3, tmp1, tmp2;\r
- int i;\r
-\r
- /* Initialize variables */\r
- reg1 = reg2 = reg3 = 0;\r
-\r
- /* Build up column parity */\r
- for(i = 0; i < 256; i++) {\r
- /* Get CP0 - CP5 from table */\r
- idx = nand_ecc_precalc_table[*dat++];\r
- reg1 ^= (idx & 0x3f);\r
-\r
- /* All bit XOR = 1 ? */\r
- if (idx & 0x40) {\r
- reg3 ^= (uint8_t) i;\r
- reg2 ^= ~((uint8_t) i);\r
- }\r
- }\r
-\r
- /* Create non-inverted ECC code from line parity */\r
- tmp1 = (reg3 & 0x80) >> 0; /* B7 -> B7 */\r
- tmp1 |= (reg2 & 0x80) >> 1; /* B7 -> B6 */\r
- tmp1 |= (reg3 & 0x40) >> 1; /* B6 -> B5 */\r
- tmp1 |= (reg2 & 0x40) >> 2; /* B6 -> B4 */\r
- tmp1 |= (reg3 & 0x20) >> 2; /* B5 -> B3 */\r
- tmp1 |= (reg2 & 0x20) >> 3; /* B5 -> B2 */\r
- tmp1 |= (reg3 & 0x10) >> 3; /* B4 -> B1 */\r
- tmp1 |= (reg2 & 0x10) >> 4; /* B4 -> B0 */\r
-\r
- tmp2 = (reg3 & 0x08) << 4; /* B3 -> B7 */\r
- tmp2 |= (reg2 & 0x08) << 3; /* B3 -> B6 */\r
- tmp2 |= (reg3 & 0x04) << 3; /* B2 -> B5 */\r
- tmp2 |= (reg2 & 0x04) << 2; /* B2 -> B4 */\r
- tmp2 |= (reg3 & 0x02) << 2; /* B1 -> B3 */\r
- tmp2 |= (reg2 & 0x02) << 1; /* B1 -> B2 */\r
- tmp2 |= (reg3 & 0x01) << 1; /* B0 -> B1 */\r
- tmp2 |= (reg2 & 0x01) << 0; /* B7 -> B0 */\r
-\r
- /* Calculate final ECC code */\r
-#ifdef CONFIG_MTD_NAND_ECC_SMC\r
- ecc_code[0] = ~tmp2;\r
- ecc_code[1] = ~tmp1;\r
-#else\r
- ecc_code[0] = ~tmp1;\r
- ecc_code[1] = ~tmp2;\r
-#endif\r
- ecc_code[2] = ((~reg1) << 2) | 0x03;\r
-\r
- return 0;\r
-}\r
-\r
-/*\r
- * usage: bb-nandflash-ecc start_address size\r
- */\r
-void usage(const char *prog)\r
-{\r
- fprintf(stderr, "Usage: %s [options] <input> <output>\n"\r
- "Options:\n"\r
- " -p <pagesize> NAND page size (default: %d)\n"\r
- " -o <oobsize> NAND OOB size (default: %d)\n"\r
- " -e <offset> NAND ECC offset (default: %d)\n"\r
- "\n", prog, DEF_NAND_PAGE_SIZE, DEF_NAND_OOB_SIZE,\r
- DEF_NAND_ECC_OFFSET);\r
- exit(1);\r
-}\r
-\r
-/*start_address/size does not include oob\r
- */\r
-int main(int argc, char **argv)\r
-{\r
- uint8_t *page_data = NULL;\r
- uint8_t *ecc_data;\r
- int infd = -1, outfd = -1;\r
- int ret = 1;\r
- ssize_t bytes;\r
- int ch;\r
-\r
- while ((ch = getopt(argc, argv, "e:o:p:")) != -1) {\r
- switch(ch) {\r
- case 'p':\r
- page_size = strtoul(optarg, NULL, 0);\r
- break;\r
- case 'o':\r
- oob_size = strtoul(optarg, NULL, 0);\r
- break;\r
- case 'e':\r
- ecc_offset = strtoul(optarg, NULL, 0);\r
- break;\r
- default:\r
- usage(argv[0]);\r
- }\r
- }\r
- argc -= optind;\r
- if (argc < 2)\r
- usage(argv[0]);\r
-\r
- argv += optind;\r
-\r
- infd = open(argv[0], O_RDONLY, 0);\r
- if (infd < 0) {\r
- perror("open input file");\r
- goto out;\r
- }\r
-\r
- outfd = open(argv[1], O_WRONLY|O_CREAT|O_TRUNC, 0644);\r
- if (outfd < 0) {\r
- perror("open output file");\r
- goto out;\r
- }\r
-\r
- page_data = malloc(page_size + oob_size);\r
-\r
- while ((bytes = read(infd, page_data, page_size)) == page_size) {\r
- int j;\r
-\r
- ecc_data = page_data + page_size + ecc_offset;\r
- for (j = 0; j < page_size / 256; j++)\r
- {\r
- nand_calculate_ecc(page_data + j * 256, ecc_data);\r
- ecc_data += 3;\r
- }\r
- write(outfd, page_data, page_size + oob_size);\r
- }\r
-\r
- ret = 0;\r
-out:\r
- if (infd >= 0)\r
- close(infd);\r
- if (outfd >= 0)\r
- close(outfd);\r
- if (page_data)\r
- free(page_data);\r
- return ret;\r
-}\r
-\r
+/*
+ * calculate ecc code for nand flash
+ *
+ * Copyright (C) 2008 yajin <yajin@vm-kernel.org>
+ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 or
+ * (at your option) version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+#define DEF_NAND_PAGE_SIZE 2048
+#define DEF_NAND_OOB_SIZE 64
+#define DEF_NAND_ECC_OFFSET 0x28
+
+static int page_size = DEF_NAND_PAGE_SIZE;
+static int oob_size = DEF_NAND_OOB_SIZE;
+static int ecc_offset = DEF_NAND_ECC_OFFSET;
+
+/*
+ * Pre-calculated 256-way 1 byte column parity
+ */
+static const uint8_t nand_ecc_precalc_table[] = {
+ 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,
+ 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
+ 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
+ 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
+ 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
+ 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
+ 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
+ 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
+ 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
+ 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
+ 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
+ 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
+ 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
+ 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
+ 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
+ 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00
+};
+
+/**
+ * nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256-byte block
+ * @dat: raw data
+ * @ecc_code: buffer for ECC
+ */
+int nand_calculate_ecc(const uint8_t *dat,
+ uint8_t *ecc_code)
+{
+ uint8_t idx, reg1, reg2, reg3, tmp1, tmp2;
+ int i;
+
+ /* Initialize variables */
+ reg1 = reg2 = reg3 = 0;
+
+ /* Build up column parity */
+ for(i = 0; i < 256; i++) {
+ /* Get CP0 - CP5 from table */
+ idx = nand_ecc_precalc_table[*dat++];
+ reg1 ^= (idx & 0x3f);
+
+ /* All bit XOR = 1 ? */
+ if (idx & 0x40) {
+ reg3 ^= (uint8_t) i;
+ reg2 ^= ~((uint8_t) i);
+ }
+ }
+
+ /* Create non-inverted ECC code from line parity */
+ tmp1 = (reg3 & 0x80) >> 0; /* B7 -> B7 */
+ tmp1 |= (reg2 & 0x80) >> 1; /* B7 -> B6 */
+ tmp1 |= (reg3 & 0x40) >> 1; /* B6 -> B5 */
+ tmp1 |= (reg2 & 0x40) >> 2; /* B6 -> B4 */
+ tmp1 |= (reg3 & 0x20) >> 2; /* B5 -> B3 */
+ tmp1 |= (reg2 & 0x20) >> 3; /* B5 -> B2 */
+ tmp1 |= (reg3 & 0x10) >> 3; /* B4 -> B1 */
+ tmp1 |= (reg2 & 0x10) >> 4; /* B4 -> B0 */
+
+ tmp2 = (reg3 & 0x08) << 4; /* B3 -> B7 */
+ tmp2 |= (reg2 & 0x08) << 3; /* B3 -> B6 */
+ tmp2 |= (reg3 & 0x04) << 3; /* B2 -> B5 */
+ tmp2 |= (reg2 & 0x04) << 2; /* B2 -> B4 */
+ tmp2 |= (reg3 & 0x02) << 2; /* B1 -> B3 */
+ tmp2 |= (reg2 & 0x02) << 1; /* B1 -> B2 */
+ tmp2 |= (reg3 & 0x01) << 1; /* B0 -> B1 */
+ tmp2 |= (reg2 & 0x01) << 0; /* B7 -> B0 */
+
+ /* Calculate final ECC code */
+#ifdef CONFIG_MTD_NAND_ECC_SMC
+ ecc_code[0] = ~tmp2;
+ ecc_code[1] = ~tmp1;
+#else
+ ecc_code[0] = ~tmp1;
+ ecc_code[1] = ~tmp2;
+#endif
+ ecc_code[2] = ((~reg1) << 2) | 0x03;
+
+ return 0;
+}
+
+/*
+ * usage: bb-nandflash-ecc start_address size
+ */
+void usage(const char *prog)
+{
+ fprintf(stderr, "Usage: %s [options] <input> <output>\n"
+ "Options:\n"
+ " -p <pagesize> NAND page size (default: %d)\n"
+ " -o <oobsize> NAND OOB size (default: %d)\n"
+ " -e <offset> NAND ECC offset (default: %d)\n"
+ "\n", prog, DEF_NAND_PAGE_SIZE, DEF_NAND_OOB_SIZE,
+ DEF_NAND_ECC_OFFSET);
+ exit(1);
+}
+
+/*start_address/size does not include oob
+ */
+int main(int argc, char **argv)
+{
+ uint8_t *page_data = NULL;
+ uint8_t *ecc_data;
+ int infd = -1, outfd = -1;
+ int ret = 1;
+ ssize_t bytes;
+ int ch;
+
+ while ((ch = getopt(argc, argv, "e:o:p:")) != -1) {
+ switch(ch) {
+ case 'p':
+ page_size = strtoul(optarg, NULL, 0);
+ break;
+ case 'o':
+ oob_size = strtoul(optarg, NULL, 0);
+ break;
+ case 'e':
+ ecc_offset = strtoul(optarg, NULL, 0);
+ break;
+ default:
+ usage(argv[0]);
+ }
+ }
+ argc -= optind;
+ if (argc < 2)
+ usage(argv[0]);
+
+ argv += optind;
+
+ infd = open(argv[0], O_RDONLY, 0);
+ if (infd < 0) {
+ perror("open input file");
+ goto out;
+ }
+
+ outfd = open(argv[1], O_WRONLY|O_CREAT|O_TRUNC, 0644);
+ if (outfd < 0) {
+ perror("open output file");
+ goto out;
+ }
+
+ page_data = malloc(page_size + oob_size);
+
+ while ((bytes = read(infd, page_data, page_size)) == page_size) {
+ int j;
+
+ ecc_data = page_data + page_size + ecc_offset;
+ for (j = 0; j < page_size / 256; j++)
+ {
+ nand_calculate_ecc(page_data + j * 256, ecc_data);
+ ecc_data += 3;
+ }
+ write(outfd, page_data, page_size + oob_size);
+ }
+
+ ret = 0;
+out:
+ if (infd >= 0)
+ close(infd);
+ if (outfd >= 0)
+ close(outfd);
+ if (page_data)
+ free(page_data);
+ return ret;
+}
+
projects / openwrt / svn-archive / archive.git / blobdiff