621 lines
No EOL
21 KiB
C
621 lines
No EOL
21 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2012 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <time.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "misc.h"
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#include "crypto.h"
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#include "sb1.h"
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static int sdram_size_table[] = {2, 8, 16, 32, 64};
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#define NR_SDRAM_ENTRIES (int)(sizeof(sdram_size_table) / sizeof(sdram_size_table[0]))
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int sb1_sdram_size_by_index(int index)
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{
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if(index < 0 || index >= NR_SDRAM_ENTRIES)
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return -1;
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return sdram_size_table[index];
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}
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int sb1_sdram_index_by_size(int size)
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{
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for(int i = 0; i < NR_SDRAM_ENTRIES; i++)
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if(sdram_size_table[i] == size)
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return i;
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return -1;
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}
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static uint16_t swap16(uint16_t t)
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{
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return (t << 8) | (t >> 8);
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}
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static void fix_version(struct sb1_version_t *ver)
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{
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ver->major = swap16(ver->major);
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ver->minor = swap16(ver->minor);
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ver->revision = swap16(ver->revision);
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}
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enum sb1_error_t sb1_write_file(struct sb1_file_t *sb, const char *filename)
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{
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if(sb->key.method != CRYPTO_XOR_KEY)
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return SB1_NO_VALID_KEY;
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/* compute image size (without userdata) */
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uint32_t image_size = 0;
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image_size += sizeof(struct sb1_header_t);
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for(int i = 0; i < sb->nr_insts; i++)
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{
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switch(sb->insts[i].cmd)
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{
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case SB1_INST_LOAD:
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image_size += 8 + ROUND_UP(sb->insts[i].size, 4);
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break;
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case SB1_INST_FILL:
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case SB1_INST_JUMP:
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case SB1_INST_CALL:
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image_size += 12;
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break;
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case SB1_INST_MODE:
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case SB1_INST_SDRAM:
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image_size += 8;
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break;
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default:
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bugp("Unknown SB instruction: %#x\n", sb->insts[i].cmd);
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}
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}
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// now take crypto marks and sector size into account:
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// there is one crypto mark per sector, ie 4 bytes for 508 = 512 (sector)
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image_size += 4 * ((image_size + SECTOR_SIZE - 5) / (SECTOR_SIZE - 4));
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image_size = ROUND_UP(image_size, SECTOR_SIZE);
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/* allocate buffer and fill it (ignoring crypto for now) */
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void *buf = xmalloc(image_size);
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struct sb1_header_t *header = buf;
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memset(buf, 0, image_size);
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header->rom_version = sb->rom_version;
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header->image_size = image_size + sb->userdata_size;
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header->header_size = sizeof(struct sb1_header_t);
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header->userdata_offset = sb->userdata ? image_size : 0;
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memcpy(&header->product_ver, &sb->product_ver, sizeof(sb->product_ver));
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fix_version(&header->product_ver);
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memcpy(&header->component_ver, &sb->component_ver, sizeof(sb->component_ver));
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fix_version(&header->component_ver);
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header->drive_tag = sb->drive_tag;
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strncpy((void *)header->signature, "STMP", 4);
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struct sb1_cmd_header_t *cmd = (void *)(header + 1);
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for(int i = 0; i < sb->nr_insts; i++)
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{
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int bytes = 0;
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int size = 0;
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switch(sb->insts[i].cmd)
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{
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case SB1_INST_LOAD:
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bytes = sb->insts[i].size;
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cmd->addr = sb->insts[i].addr;
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memcpy(cmd + 1, sb->insts[i].data, sb->insts[i].size);
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memset((void *)(cmd + 1) + sb->insts[i].size, 0,
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bytes - sb->insts[i].size);
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break;
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case SB1_INST_FILL:
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bytes = sb->insts[i].size;
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size = 2;
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memcpy(cmd + 1, &sb->insts[i].pattern, 4);
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cmd->addr = sb->insts[i].addr;
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break;
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case SB1_INST_JUMP:
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case SB1_INST_CALL:
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bytes = 4;
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cmd->addr = sb->insts[i].addr;
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memcpy(cmd + 1, &sb->insts[i].argument, 4);
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break;
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case SB1_INST_MODE:
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bytes = 0;
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cmd->addr = sb->insts[i].mode;
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break;
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case SB1_INST_SDRAM:
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bytes = 0;
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cmd->addr = SB1_MK_ADDR_SDRAM(sb->insts[i].sdram.chip_select,
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sb->insts[i].sdram.size_index);
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break;
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default:
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bugp("Unknown SB instruction: %#x\n", sb->insts[i].cmd);
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}
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/* handle most common cases */
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if(size == 0)
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size = ROUND_UP(bytes, 4) / 4 + 1;
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cmd->cmd = SB1_MK_CMD(sb->insts[i].cmd, sb->insts[i].datatype,
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bytes, sb->insts[i].critical,
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size);
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cmd = (void *)cmd + 4 + size * 4;
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}
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/* move everything to prepare crypto marks (start at the end !) */
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for(int i = image_size / SECTOR_SIZE - 1; i >= 0; i--)
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memmove(buf + i * SECTOR_SIZE, buf + i * (SECTOR_SIZE - 4), SECTOR_SIZE - 4);
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union xorcrypt_key_t key[2];
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memcpy(key, sb->key.u.xor_key, sizeof(sb->key));
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void *ptr = header + 1;
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int offset = header->header_size;
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for(unsigned i = 0; i < image_size / SECTOR_SIZE; i++)
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{
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int size = SECTOR_SIZE - 4 - offset;
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uint32_t mark = xor_encrypt(key, ptr, size);
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*(uint32_t *)(ptr + size) = mark;
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ptr += size + 4;
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offset = 0;
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}
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FILE *fd = fopen(filename, "wb");
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if(fd == NULL)
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return SB1_OPEN_ERROR;
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if(fwrite(buf, image_size, 1, fd) != 1)
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{
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free(buf);
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return SB1_WRITE_ERROR;
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}
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free(buf);
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if(sb->userdata)
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fwrite(sb->userdata, sb->userdata_size, 1, fd);
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fclose(fd);
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return SB1_SUCCESS;
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}
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struct sb1_file_t *sb1_read_file(const char *filename, void *u,
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sb1_color_printf cprintf, enum sb1_error_t *err)
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{
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return sb1_read_file_ex(filename, 0, -1, u, cprintf, err);
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}
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struct sb1_file_t *sb1_read_file_ex(const char *filename, size_t offset, size_t size, void *u,
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sb1_color_printf cprintf, enum sb1_error_t *err)
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{
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#define fatal(e, ...) \
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do { if(err) *err = e; \
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cprintf(u, true, GREY, __VA_ARGS__); \
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free(buf); \
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return NULL; } while(0)
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FILE *f = fopen(filename, "rb");
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void *buf = NULL;
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if(f == NULL)
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fatal(SB1_OPEN_ERROR, "Cannot open file for reading\n");
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fseek(f, 0, SEEK_END);
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size_t read_size = ftell(f);
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fseek(f, offset, SEEK_SET);
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if(size != (size_t)-1)
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read_size = size;
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buf = xmalloc(read_size);
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if(fread(buf, read_size, 1, f) != 1)
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{
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fclose(f);
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fatal(SB1_READ_ERROR, "Cannot read file\n");
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}
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fclose(f);
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struct sb1_file_t *ret = sb1_read_memory(buf, read_size, u, cprintf, err);
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free(buf);
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return ret;
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#undef fatal
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}
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static const char *sb1_cmd_name(int cmd)
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{
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switch(cmd)
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{
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case SB1_INST_LOAD: return "load";
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case SB1_INST_FILL: return "fill";
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case SB1_INST_JUMP: return "jump";
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case SB1_INST_CALL: return "call";
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case SB1_INST_MODE: return "mode";
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case SB1_INST_SDRAM: return "sdram";
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default: return "unknown";
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}
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}
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static const char *sb1_datatype_name(int cmd)
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{
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switch(cmd)
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{
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case SB1_DATATYPE_UINT32: return "uint32";
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case SB1_DATATYPE_UINT16: return "uint16";
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case SB1_DATATYPE_UINT8: return "uint8";
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default: return "unknown";
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}
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}
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struct sb1_file_t *sb1_read_memory(void *_buf, size_t filesize, void *u,
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sb1_color_printf cprintf, enum sb1_error_t *err)
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{
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struct sb1_file_t *file = NULL;
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uint8_t *buf = _buf;
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#define printf(c, ...) cprintf(u, false, c, __VA_ARGS__)
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#define fatal(e, ...) \
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do { if(err) *err = e; \
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cprintf(u, true, GREY, __VA_ARGS__); \
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sb1_free(file); \
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return NULL; } while(0)
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#define print_hex(c, p, len, nl) \
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do { printf(c, ""); print_hex(p, len, nl); } while(0)
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file = xmalloc(sizeof(struct sb1_file_t));
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memset(file, 0, sizeof(struct sb1_file_t));
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struct sb1_header_t *header = (struct sb1_header_t *)buf;
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if(memcmp(header->signature, "STMP", 4) != 0)
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fatal(SB1_FORMAT_ERROR, "Bad signature\n");
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if(header->image_size > filesize)
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fatal(SB1_FORMAT_ERROR, "File too small (should be at least %d bytes)\n",
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header->image_size);
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if(header->header_size != sizeof(struct sb1_header_t))
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fatal(SB1_FORMAT_ERROR, "Bad header size\n");
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printf(BLUE, "Basic info:\n");
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printf(GREEN, " ROM version: ");
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printf(YELLOW, "%x\n", header->rom_version);
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printf(GREEN, " Userdata offset: ");
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printf(YELLOW, "%x\n", header->userdata_offset);
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printf(GREEN, " Pad: ");
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printf(YELLOW, "%x\n", header->pad2);
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struct sb1_version_t product_ver = header->product_ver;
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fix_version(&product_ver);
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struct sb1_version_t component_ver = header->component_ver;
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fix_version(&component_ver);
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printf(GREEN, " Product version: ");
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printf(YELLOW, "%X.%X.%X\n", product_ver.major, product_ver.minor, product_ver.revision);
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printf(GREEN, " Component version: ");
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printf(YELLOW, "%X.%X.%X\n", component_ver.major, component_ver.minor, component_ver.revision);
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printf(GREEN, " Drive tag: ");
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printf(YELLOW, "%x\n", header->drive_tag);
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/* copy rom version, padding and drive tag */
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/* copy versions */
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memcpy(&file->product_ver, &product_ver, sizeof(product_ver));
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memcpy(&file->component_ver, &component_ver, sizeof(component_ver));
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file->rom_version = header->rom_version;
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file->pad2 = header->pad2;
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file->drive_tag = header->drive_tag;
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/* reduce size w.r.t to userdata part */
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uint32_t userdata_size = 0;
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if(header->userdata_offset != 0)
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{
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userdata_size = header->image_size - header->userdata_offset;
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header->image_size -= userdata_size;
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}
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if(header->image_size % SECTOR_SIZE)
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{
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if(!g_force)
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printf(GREY, "Image size is not a multiple of sector size\n");
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else
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fatal(SB1_FORMAT_ERROR, "Image size is not a multiple of sector size\n");
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}
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/* find key */
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union xorcrypt_key_t key[2];
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memset(key, 0, sizeof(key));
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bool valid_key = false;
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uint8_t sector[SECTOR_SIZE];
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for(int i = 0; i < g_nr_keys; i++)
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{
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if(!g_key_array[i].method == CRYPTO_XOR_KEY)
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continue;
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/* copy key and data because it's modified by the crypto code */
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memcpy(key, g_key_array[i].u.xor_key, sizeof(key));
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memcpy(sector, header + 1, SECTOR_SIZE - header->header_size);
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/* try to decrypt the first sector */
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uint32_t mark = xor_decrypt(key, sector, SECTOR_SIZE - 4 - header->header_size);
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/* copy key again it's modified by the crypto code */
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memcpy(key, g_key_array[i].u.xor_key, sizeof(key));
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if(mark != *(uint32_t *)§or[SECTOR_SIZE - 4 - header->header_size])
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continue;
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/* found ! */
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valid_key = true;
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break;
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}
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if(!valid_key)
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{
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if(!g_force)
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fatal(SB1_NO_VALID_KEY, "No valid key found\n");
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printf(GREY, "No valid key found: forced to continue but this will fail\n");
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}
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printf(BLUE, "Crypto\n");
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for(int i = 0; i < 2; i++)
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{
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printf(RED, " Key %d\n", i);
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printf(OFF, " ");
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for(int j = 0; j < 64; j++)
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{
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printf(YELLOW, "%02x ", key[i].key[j]);
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if((j + 1) % 16 == 0)
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{
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printf(OFF, "\n");
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if(j + 1 != 64)
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printf(OFF, " ");
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}
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}
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}
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memcpy(file->key.u.xor_key, key, sizeof(key));
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/* decrypt image in-place (and removing crypto markers) */
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void *ptr = header + 1;
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void *copy_ptr = header + 1;
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int offset = header->header_size;
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for(unsigned i = 0; i < header->image_size / SECTOR_SIZE; i++)
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{
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int size = SECTOR_SIZE - 4 - offset;
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uint32_t mark = xor_decrypt(key, ptr, size);
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if(mark != *(uint32_t *)(ptr + size) && !g_force)
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fatal(SB1_CHECKSUM_ERROR, "Crypto mark mismatch\n");
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memmove(copy_ptr, ptr, size);
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ptr += size + 4;
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copy_ptr += size;
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offset = 0;
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}
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/* reduce image size given the removed marks */
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header->image_size -= header->image_size / SECTOR_SIZE;
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printf(BLUE, "Commands\n");
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struct sb1_cmd_header_t *cmd = (void *)(header + 1);
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while((void *)cmd < (void *)header + header->image_size)
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{
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printf(GREEN, " Command");
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printf(YELLOW, " %#x\n", cmd->cmd);
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printf(YELLOW, " Size:");
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printf(RED, " %#x\n", SB1_CMD_SIZE(cmd->cmd));
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printf(YELLOW, " Critical:");
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printf(RED, " %d\n", SB1_CMD_CRITICAL(cmd->cmd));
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printf(YELLOW, " Data Type:");
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printf(RED, " %#x ", SB1_CMD_DATATYPE(cmd->cmd));
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printf(GREEN, "(%s)\n", sb1_datatype_name(SB1_CMD_DATATYPE(cmd->cmd)));
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printf(YELLOW, " Bytes:");
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printf(RED, " %#x\n", SB1_CMD_BYTES(cmd->cmd));
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printf(YELLOW, " Boot:");
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printf(RED, " %#x ", SB1_CMD_BOOT(cmd->cmd));
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printf(GREEN, "(%s)\n", sb1_cmd_name(SB1_CMD_BOOT(cmd->cmd)));
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/* copy command */
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struct sb1_inst_t inst;
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memset(&inst, 0, sizeof(inst));
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inst.cmd = SB1_CMD_BOOT(cmd->cmd);
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inst.critical = SB1_CMD_CRITICAL(cmd->cmd);
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inst.datatype = SB1_CMD_DATATYPE(cmd->cmd);
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inst.size = SB1_CMD_BYTES(cmd->cmd);
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switch(SB1_CMD_BOOT(cmd->cmd))
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{
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case SB1_INST_SDRAM:
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inst.sdram.chip_select = SB1_ADDR_SDRAM_CS(cmd->addr);
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inst.sdram.size_index = SB1_ADDR_SDRAM_SZ(cmd->addr);
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printf(YELLOW, " Ram:");
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printf(RED, " %#x", inst.addr);
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printf(GREEN, " (Chip Select=%d, Size=%d)\n", SB1_ADDR_SDRAM_CS(cmd->addr),
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sb1_sdram_size_by_index(SB1_ADDR_SDRAM_SZ(cmd->addr)));
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break;
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case SB1_INST_MODE:
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inst.mode = cmd->addr;
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printf(YELLOW, " Mode:");
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printf(RED, " %#x\n", inst.mode);
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break;
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case SB1_INST_LOAD:
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inst.data = malloc(inst.size);
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memcpy(inst.data, cmd + 1, inst.size);
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inst.addr = cmd->addr;
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printf(YELLOW, " Addr:");
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printf(RED, " %#x\n", inst.addr);
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break;
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case SB1_INST_FILL:
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inst.addr = cmd->addr;
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inst.pattern = *(uint32_t *)(cmd + 1);
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printf(YELLOW, " Addr:");
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printf(RED, " %#x\n", cmd->addr);
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printf(YELLOW, " Pattern:");
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printf(RED, " %#x\n", inst.pattern);
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break;
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case SB1_INST_CALL:
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case SB1_INST_JUMP:
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inst.addr = cmd->addr;
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inst.argument = *(uint32_t *)(cmd + 1);
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printf(YELLOW, " Addr:");
|
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printf(RED, " %#x\n", cmd->addr);
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printf(YELLOW, " Argument:");
|
|
printf(RED, " %#x\n", inst.pattern);
|
|
break;
|
|
default:
|
|
printf(GREY, "WARNING: unknown SB command !\n");
|
|
break;
|
|
}
|
|
|
|
file->insts = augment_array(file->insts, sizeof(inst), file->nr_insts, &inst, 1);
|
|
file->nr_insts++;
|
|
|
|
/* last instruction ? */
|
|
if(SB1_CMD_BOOT(cmd->cmd) == SB1_INST_JUMP ||
|
|
SB1_CMD_BOOT(cmd->cmd) == SB1_INST_MODE)
|
|
break;
|
|
|
|
cmd = (void *)cmd + 4 + 4 * SB1_CMD_SIZE(cmd->cmd);
|
|
}
|
|
|
|
/* copy userdata */
|
|
file->userdata_size = userdata_size;
|
|
if(userdata_size > 0)
|
|
{
|
|
file->userdata = malloc(userdata_size);
|
|
memcpy(file->userdata, (void *)header + header->userdata_offset, userdata_size);
|
|
}
|
|
|
|
return file;
|
|
#undef printf
|
|
#undef fatal
|
|
#undef print_hex
|
|
}
|
|
|
|
void sb1_free(struct sb1_file_t *file)
|
|
{
|
|
if(!file) return;
|
|
|
|
for(int i = 0; i < file->nr_insts; i++)
|
|
free(file->insts[i].data);
|
|
free(file->insts);
|
|
free(file->userdata);
|
|
free(file);
|
|
}
|
|
|
|
void sb1_dump(struct sb1_file_t *file, void *u, sb1_color_printf cprintf)
|
|
{
|
|
#define printf(c, ...) cprintf(u, false, c, __VA_ARGS__)
|
|
#define print_hex(c, p, len, nl) \
|
|
do { printf(c, ""); print_hex(p, len, nl); } while(0)
|
|
|
|
#define TREE RED
|
|
#define HEADER GREEN
|
|
#define TEXT YELLOW
|
|
#define TEXT2 BLUE
|
|
#define TEXT3 RED
|
|
#define SEP OFF
|
|
|
|
printf(BLUE, "SB1 File\n");
|
|
printf(TREE, "+-");
|
|
printf(HEADER, "Rom Ver: ");
|
|
printf(TEXT, "%x\n", file->rom_version);
|
|
printf(TREE, "+-");
|
|
printf(HEADER, "Pad: ");
|
|
printf(TEXT, "%x\n", file->pad2);
|
|
printf(TREE, "+-");
|
|
printf(HEADER, "Drive Tag: ");
|
|
printf(TEXT, "%x\n", file->drive_tag);
|
|
printf(TREE, "+-");
|
|
printf(HEADER, "Product Version: ");
|
|
printf(TEXT, "%X.%X.%X\n", file->product_ver.major, file->product_ver.minor,
|
|
file->product_ver.revision);
|
|
printf(TREE, "+-");
|
|
printf(HEADER, "Component Version: ");
|
|
printf(TEXT, "%X.%X.%X\n", file->component_ver.major, file->component_ver.minor,
|
|
file->component_ver.revision);
|
|
|
|
for(int j = 0; j < file->nr_insts; j++)
|
|
{
|
|
struct sb1_inst_t *inst = &file->insts[j];
|
|
printf(TREE, "+-");
|
|
printf(HEADER, "Command\n");
|
|
printf(TREE, "| +-");
|
|
switch(inst->cmd)
|
|
{
|
|
case SB1_INST_CALL:
|
|
case SB1_INST_JUMP:
|
|
printf(HEADER, "%s", inst->cmd == SB1_INST_CALL ? "CALL" : "JUMP");
|
|
printf(SEP, " | ");
|
|
printf(TEXT3, "crit=%d", inst->critical);
|
|
printf(SEP, " | ");
|
|
printf(TEXT, "addr=0x%08x\n", inst->addr);
|
|
break;
|
|
case SB1_INST_LOAD:
|
|
printf(HEADER, "LOAD");
|
|
printf(SEP, " | ");
|
|
printf(TEXT3, "crit=%d", inst->critical);
|
|
printf(SEP, " | ");
|
|
printf(TEXT, "addr=0x%08x", inst->addr);
|
|
printf(SEP, " | ");
|
|
printf(TEXT2, "len=0x%08x\n", inst->size);
|
|
break;
|
|
case SB1_INST_FILL:
|
|
printf(HEADER, "FILL");
|
|
printf(SEP, " | ");
|
|
printf(TEXT3, "crit=%d", inst->critical);
|
|
printf(SEP, " | ");
|
|
printf(TEXT, "addr=0x%08x", inst->addr);
|
|
printf(SEP, " | ");
|
|
printf(TEXT2, "len=0x%08x", inst->size);
|
|
printf(SEP, " | ");
|
|
printf(TEXT2, "pattern=0x%08x\n", inst->pattern);
|
|
break;
|
|
case SB1_INST_MODE:
|
|
printf(HEADER, "MODE");
|
|
printf(SEP, " | ");
|
|
printf(TEXT3, "crit=%d", inst->critical);
|
|
printf(SEP, " | ");
|
|
printf(TEXT, "mode=0x%08x\n", inst->addr);
|
|
break;
|
|
case SB1_INST_SDRAM:
|
|
printf(HEADER, "SRAM");
|
|
printf(SEP, " | ");
|
|
printf(TEXT3, "crit=%d", inst->critical);
|
|
printf(SEP, " | ");
|
|
printf(TEXT, "chip_select=%d", inst->sdram.chip_select);
|
|
printf(SEP, " | ");
|
|
printf(TEXT2, "chip_size=%d\n", sb1_sdram_size_by_index(inst->sdram.size_index));
|
|
break;
|
|
default:
|
|
printf(GREY, "[Unknown instruction %x]\n", inst->cmd);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#undef printf
|
|
#undef print_hex
|
|
}
|
|
|
|
static struct crypto_key_t g_default_xor_key =
|
|
{
|
|
.method = CRYPTO_XOR_KEY,
|
|
.u.xor_key =
|
|
{
|
|
{.k = {0x67ECAEF6, 0xB31FB961, 0x118A9F4C, 0xA32A97DA,
|
|
0x6CC39617, 0x5BC00314, 0x9D430685, 0x4D7DB502,
|
|
0xA347685E, 0x3C87E86C, 0x8987AAA0, 0x24B78EF1,
|
|
0x893B9605, 0x9BB8C2BE, 0x6D9544E2, 0x375B525C}},
|
|
{.k = {0x3F424704, 0x53B5A331, 0x6AD345A5, 0x20DCEC51,
|
|
0x743C8D3B, 0x444B3792, 0x0AF429569, 0xB7EE1111,
|
|
0x583BF768, 0x9683BF9A, 0x0B032D799, 0xFE4E78ED,
|
|
0xF20D08C2, 0xFA0BE4A2, 0x4D89C317, 0x887B2D6F}}
|
|
}
|
|
};
|
|
|
|
void sb1_get_default_key(struct crypto_key_t *key)
|
|
{
|
|
memcpy(key, &g_default_xor_key, sizeof(g_default_xor_key));
|
|
/* decrypt the xor key which is xor'ed */
|
|
for(int i = 0; i < 2; i++)
|
|
for(int j = 0; j < 16; j++)
|
|
key->u.xor_key[i].k[j] ^= 0xaa55aa55;
|
|
} |