+++ /dev/null
-/*
- * buildimage - create Dreambox nand boot image.
- *
- * contains algorithms ripped from u-boot and first-stage.
- * Licensed as GPL.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <netinet/in.h>
-
-int eraseblock_size, spare_size, sector_size, largepage;
-
-#define SECTOR_SIZE_WITH_ECC (sector_size+spare_size)
-
-
-/*
- * Pre-calculated 256-way 1 byte column parity
- */
-static const unsigned char 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
-};
-
-
-/*
- * Creates non-inverted ECC code from line parity
- */
-static void nand_trans_result(unsigned char reg2, unsigned char reg3,
- unsigned char *ecc_code)
-{
- unsigned char a, b, i, tmp1, tmp2;
-
- /* Initialize variables */
- a = b = 0x80;
- tmp1 = tmp2 = 0;
-
- /* Calculate first ECC byte */
- for (i = 0; i < 4; i++) {
- if (reg3 & a) /* LP15,13,11,9 --> ecc_code[0] */
- tmp1 |= b;
- b >>= 1;
- if (reg2 & a) /* LP14,12,10,8 --> ecc_code[0] */
- tmp1 |= b;
- b >>= 1;
- a >>= 1;
- }
-
- /* Calculate second ECC byte */
- b = 0x80;
- for (i = 0; i < 4; i++) {
- if (reg3 & a) /* LP7,5,3,1 --> ecc_code[1] */
- tmp2 |= b;
- b >>= 1;
- if (reg2 & a) /* LP6,4,2,0 --> ecc_code[1] */
- tmp2 |= b;
- b >>= 1;
- a >>= 1;
- }
-
- /* Store two of the ECC bytes */
- ecc_code[0] = tmp1;
- ecc_code[1] = tmp2;
-}
-
-/*
- * Calculate 3 byte ECC code for 256 byte block
- */
-static void nand_calculate_ecc (const unsigned char *dat, unsigned char *ecc_code)
-{
- unsigned char idx, reg1, reg3;
- int j;
-
- /* Initialize variables */
- reg1 = reg3 = 0;
- ecc_code[0] = ecc_code[1] = ecc_code[2] = 0;
-
- /* Build up column parity */
- for(j = 0; j < 256; j++) {
-
- /* Get CP0 - CP5 from table */
- idx = nand_ecc_precalc_table[dat[j]];
- reg1 ^= idx;
-
- /* All bit XOR = 1 ? */
- if (idx & 0x40) {
- reg3 ^= (unsigned char) j;
- }
- }
-
- /* Create non-inverted ECC code from line parity */
- nand_trans_result((reg1 & 0x40) ? ~reg3 : reg3, reg3, ecc_code);
-
- /* Calculate final ECC code */
- ecc_code[0] = ~ecc_code[0];
- ecc_code[1] = ~ecc_code[1];
- ecc_code[2] = ((~reg1) << 2) | 0x03;
-}
-
-void file_open(FILE **f, int *size, const char *filename)
-{
- *f = fopen(filename, "r");
- if (!*f)
- {
- perror(filename);
- exit(1);
- }
- fseek(*f, 0, SEEK_END);
- *size = ftell(*f);
- fseek(*f, 0, SEEK_SET);
-}
-
-void die(const char *msg)
-{
- fprintf(stderr, "%s\n", msg);
- exit(2);
-}
-
-void emit_4(unsigned long val)
-{
- val = htonl(val);
- write(1, &val, 4);
-}
-
-#define TO_SECT(x) (x+sector_size-1)/sector_size
-
-typedef void fnc_encode_ecc(unsigned char *dst, unsigned char *src, int cnt);
-
-void encode_hevers(unsigned char *dst, unsigned char *src, int count)
-{
- if (!largepage)
- {
- dst[0] = count >> 8;
- dst[1] = count & 0xFF;
- unsigned char temp;
- int cnt;
- for(cnt=0; cnt<sector_size; cnt++)
- {
- temp=src[cnt];
- dst[2]^=temp;
- if(cnt & 1)
- dst[6 + 0]^=temp;
- else
- dst[6 + 1]^=temp;
- if(cnt & 2) dst[6 + 2]^=temp;
- if(cnt & 4) dst[6 + 3]^=temp;
- if(cnt & 8) dst[6 + 4]^=temp;
- if(cnt & 16) dst[6 + 5]^=temp;
- if(cnt & 32) dst[6 + 6]^=temp;
- if(cnt & 64) dst[6 + 7]^=temp;
- if(cnt & 128) dst[6 + 8]^=temp;
- if(cnt & 256) dst[6 + 9]^=temp;
- }
- } else
- {
- dst[0] = 0xFF;
- dst[1] = 0xFF;
- dst[2] = count >> 8;
- dst[3] = count & 0xFF;
- unsigned char temp;
- int cnt;
- for(cnt=0; cnt<sector_size; cnt++)
- {
- temp=src[cnt];
- dst[40]^=temp;
- if(cnt & 1)
- dst[41]^=temp;
- else
- dst[42]^=temp;
- if(cnt & 2) dst[43]^=temp;
- if(cnt & 4) dst[44]^=temp;
- if(cnt & 8) dst[45]^=temp;
- if(cnt & 16) dst[46]^=temp;
- if(cnt & 32) dst[47]^=temp;
- if(cnt & 64) dst[48]^=temp;
- if(cnt & 128) dst[49]^=temp;
- if(cnt & 256) dst[50]^=temp;
- }
- }
-}
-
-void encode_jffs2(unsigned char *dst, unsigned char *src, int cnt)
-{
- memset(dst, 0xFF, spare_size);
-
- if (!largepage)
- {
- unsigned char ecc_code[8];
- nand_calculate_ecc (src, ecc_code);
- nand_calculate_ecc (src+256, ecc_code+3);
- dst[0] = ecc_code[0];
- dst[1] = ecc_code[1];
- dst[2] = ecc_code[2];
- dst[3] = ecc_code[3];
- dst[4] = 0xFF;
- dst[5] = 0xFF;
- dst[6] = ecc_code[4];
- dst[7] = ecc_code[5];
-
- if (!(cnt & ((eraseblock_size/sector_size)-1)))
- {
- dst[8] = 0x19;
- dst[9] = 0x85;
- dst[10] = 0x20;
- dst[11] = 0x03;
- dst[12] = 0x00;
- dst[13] = 0x00;
- dst[14] = 0x00;
- dst[15] = 0x08;
- } else
- memset(dst + 8, 0xFF, 8);
- } else
- {
- int i;
- for (i=0; i<8; ++i)
- nand_calculate_ecc (src + i * 256, dst + 40 + i * 3);
-
- if (!(cnt & ((eraseblock_size/sector_size)-1)))
- {
- dst[2] = 0x19;
- dst[3] = 0x85;
- dst[4] = 0x20;
- dst[5] = 0x03;
- dst[6] = 0x00;
- dst[7] = 0x00;
- dst[8] = 0x00;
- dst[9] = 0x08;
- }
- }
-}
-
-void emit_file(FILE *src, int size, fnc_encode_ecc * eccfnc)
-{
- emit_4(size * SECTOR_SIZE_WITH_ECC);
- int cnt = 0;
- while (1)
- {
- unsigned char sector[sector_size + spare_size];
- memset(sector, 0xFF, sector_size + spare_size);
- int r = fread(sector, 1, sector_size, src);
- if (!r)
- break;
- eccfnc(sector + sector_size, sector, cnt);
- write(1, sector, SECTOR_SIZE_WITH_ECC);
- ++cnt;
- }
- if (cnt != size)
- die("size changed");
-}
-
- /* reserve to two sectors plus 1% for badblocks, and round down */
-#define BADBLOCK_SAFE(x) ( ((x) - (eraseblock_size * 2) - (x) / 100) &~ eraseblock_size )
-
-int main(int argc, char **argv)
-{
- if ((argc != 4) && (argc != 5) && (argc != 6) && (argc != 7) )
- {
- fprintf(stderr, "usage: %s <2nd.bin.gz> <boot.jffs2> <root.jffs2> [<arch>] [<flashsize-in-mb>] [options]> image.nfi\n", *argv);
- return 1;
- }
-
- FILE *f_2nd, *f_boot, *f_root;
- int size_2nd, size_boot, size_root;
-
- file_open(&f_2nd, &size_2nd, argv[1]);
- file_open(&f_boot, &size_boot, argv[2]);
- file_open(&f_root, &size_root, argv[3]);
-
- int flashsize = 32*1024*1024;
- if (argc >= 6)
- flashsize = atoi(argv[5]) * 1024 * 1024;
-
-
- int partition[] = {0x40000, 0x400000, flashsize};
-
- if ((argc >= 7) && strstr(argv[6], "large"))
- {
- largepage = 1;
- eraseblock_size = 128*1024;
- spare_size = 64;
- sector_size = 2048;
- partition[0] = 0x100000;
- } else
- {
- largepage = 0;
- eraseblock_size = 16384;
- spare_size = 16;
- sector_size = 512;
- partition[0] = 0x40000;
- }
-
- fprintf(stderr, "2nd: %u of %u bytes\n", size_2nd, BADBLOCK_SAFE(partition[0]));
- fprintf(stderr, "boot: %u of %u bytes\n", size_boot, BADBLOCK_SAFE(partition[1] - partition[0]));
- fprintf(stderr, "root: %u of %u bytes\n", size_root, BADBLOCK_SAFE(partition[2] - partition[1]));
-
- if (size_2nd > BADBLOCK_SAFE(partition[0]))
- die("2nd stage is too big. did you gzip it before?");
- if (size_boot > BADBLOCK_SAFE(partition[1] - partition[0]))
- die("boot is too big. You can modify the buildimage tool, but you don't want that.");
- if (size_root > BADBLOCK_SAFE(partition[2] - partition[1]))
- die("root is too big. This doesn't work. sorry.");
-
- int sectors_2nd = TO_SECT(size_2nd), sectors_boot = TO_SECT(size_boot), sectors_root = TO_SECT(size_root);
-
- int num_partitions = 3;
-
- int total_size = 4 + num_partitions * 4 + 4 + sectors_2nd * SECTOR_SIZE_WITH_ECC + 4 + sectors_boot * SECTOR_SIZE_WITH_ECC + 4 + sectors_root * SECTOR_SIZE_WITH_ECC;
-
- /* in case an architecture is given, write NFI1 header */
- if (argc >= 5)
- {
- char header[32] = "NFI1";
- strncpy(header + 4, argv[4], 28);
- write(1, header, 32);
- }
-
- /* global header */
- emit_4(total_size);
-
- /* partition */
- emit_4(num_partitions * 4);
- int i;
- for (i=0; i < num_partitions; ++i)
- emit_4(partition[i]);
-
- /* 2nd stage */
- emit_file(f_2nd, sectors_2nd, encode_hevers);
- /* boot + root */
- emit_file(f_boot, sectors_boot, encode_jffs2);
- emit_file(f_root, sectors_root, encode_jffs2);
-
- return 0;
-}
projects / vuplus_openembedded / commitdiff