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ipl.c
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/*
¬°¤*,¸¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸
¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯
__/¯\____ ___/\__ _/\__ _/\_ _/\__ _/\___ ___/\__ __/\_ _/\__
\_ ____/_> ____ \_/ _ \_ \ < /_ \_/ _>> ____ \_ > \_/ _ \_
_> ___/ ¯>__> <<__// __ _/ |> ></ _/> </ ¯ \\__> <<__// /\ // __ _/
_> \7 <__/:. \__/:. \> \_/ L/ _____/. 7> .\_/:. \__/ <_/ </:. \> \_
|:::::::::::::::::::::::/:::::::::::::>::::::::/::::::::::::::::::::::::/:::::|
|¯¯\::::/\:/¯\::::/¯¯¯¯<::::/\::/¯¯\:/¯¯¯¯¯¯\::\::/¯¯\::::/¯¯\::::/¯¯¯¯<::::/¯|
|__ |¯¯| T _ |¯¯¯| ___ |¯¯| |¯| _ T ______ |¯¯¯¯| _ |¯¯¯| _ |¯¯¯| ___ |¯¯| _|
\|__|/\|/ \|___|/ \|__|/\|_|/ \|/ \| |/ \|___|/ \|___|/dNo\|__|/
¬°¤*,¸¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸
¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯
This file is part of Etripator,
copyright (c) 2009--2024 Vincent Cruz.
Etripator 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 3 of the License, or
(at your option) any later version.
Etripator 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 Etripator. If not, see <http://www.gnu.org/licenses/>.
¬°¤*,¸¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸
¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯¬°¤*,¸_¸,*¤°¬°¤*,¸,*¤°¬¯
*/
#include "ipl.h"
#include "message.h"
#define IPL_HEADER_SIZE 0x80
#define IPL_DATA_SIZE 0xB2
static bool ipl_read_header(IPL *out, FILE *in, const char *filename) {
bool ret = false;
if(fread(out->load_start_record, 1, 3, in) != 3) {
ERROR_MSG("Failed to read IPLBLK from %s: %s", filename, strerror(errno));
} else if(fread(&out->load_sector_count, 1, 1, in) != 1) {
ERROR_MSG("Failed to read IPLBLN from %s: %s", filename, strerror(errno));
} else if(fread(out->load_store_address, 1, 2, in) != 2) {
ERROR_MSG("Failed to read IPLSTA from %s: %s", filename, strerror(errno));
} else if(fread(out->load_exec_address, 1, 2, in) != 2) {
ERROR_MSG("Failed to read IPLJMP from %s: %s", filename, strerror(errno));
} else if(fread(out->mpr, 1, 5, in) != 5) {
ERROR_MSG("Failed to read IPLMPR from %s: %s", filename, strerror(errno));
} else if(fread(&out->opening_mode, 1, 1, in) != 1) {
ERROR_MSG("Failed to read OPENMODE from %s: %s", filename, strerror(errno));
} else if(fread(out->opening_gfx_record, 1, 3, in) != 3) {
ERROR_MSG("Failed to read GRPBLK from %s: %s", filename, strerror(errno));
} else if(fread(&out->opening_gfx_sector_count, 1, 1, in) != 1) {
ERROR_MSG("Failed to read GRPBLN from %s: %s", filename, strerror(errno));
} else if(fread(out->opening_gfx_read_address, 1, 2, in) != 2) {
ERROR_MSG("Failed to read GRPADR from %s: %s", filename, strerror(errno));
} else if(fread(out->opening_adpcm_record, 1, 3, in) != 3) {
ERROR_MSG("Failed to read ADPBLK from %s: %s", filename, strerror(errno));
} else if(fread(&out->opening_adpcm_sector_count, 1, 1, in) != 1) {
ERROR_MSG("Failed to read ADPBLN from %s: %s", filename, strerror(errno));
} else if(fread(&out->opening_adpcm_sampling_rate, 1, 1, in) != 1) {
ERROR_MSG("Failed to read ADPRATE from %s: %s", filename, strerror(errno));
} else if(fread(out->reserved, 1, 7, in) != 7) {
ERROR_MSG("Failed to read RESERVED from %s: %s", filename, strerror(errno));
} else if(fread(out->id, 1, 24, in) != 24) {
ERROR_MSG("Failed to read ID STR from %s: %s", filename, strerror(errno));
} else if(fread(out->legal, 1, 50, in) != 50) {
ERROR_MSG("Failed to read LEGAL from %s: %s", filename, strerror(errno));
} else if(fread(out->program_name, 1, 16, in) != 16) {
ERROR_MSG("Failed to read PROGRAM NAME from %s: %s", filename, strerror(errno));
} else if(fread(out->extra, 1, 6, in) != 6) {
ERROR_MSG("Failed to read EXTRA from %s: %s", filename, strerror(errno));
} else {
ret = true;
}
return ret;
}
void ipl_print(IPL *in) {
INFO_MSG("IPLBLK: hi:%02x mid:%02x lo:%02x", in->load_start_record[0], in->load_start_record[1], in->load_start_record[2]);
INFO_MSG("IPLBKN: %02x", in->load_sector_count);
INFO_MSG("IPLSTA: hi:%02x lo:%02x", in->load_store_address[1], in->load_store_address[0]);
INFO_MSG("IPLJMP: hi:%02x lo:%02x", in->load_exec_address[1], in->load_exec_address[0]);
INFO_MSG("IPLMPR: 2:%02x, 3:%02x, 4:%02x, 5:%02x, 6:%02x", in->mpr[0], in->mpr[1], in->mpr[2], in->mpr[3], in->mpr[4]);
INFO_MSG("OPENMODE: %02x", in->opening_mode);
INFO_MSG("GRPBLK: hi:%02x mid:%02x lo:%02x", in->opening_gfx_record[0], in->opening_gfx_record[1], in->opening_gfx_record[2]);
INFO_MSG("GRPBLN: %02x", in->opening_gfx_sector_count);
INFO_MSG("GRPADR: hi:%02x lo:%02x", in->opening_gfx_read_address[1], in->opening_gfx_read_address[0]);
INFO_MSG("ADPBLK: hi:%02x mid:%02x lo:%02x", in->opening_adpcm_record[0], in->opening_adpcm_record[1], in->opening_adpcm_record[2]);
INFO_MSG("ADPBLN: %02x", in->opening_adpcm_sector_count);
INFO_MSG("ADPRATE: %02x", in->opening_adpcm_sampling_rate);
INFO_MSG("RESERVED: %02x%02x%02x%02x%02x%02x%02x", in->reserved[0], in->reserved[1], in->reserved[2], in->reserved[3], in->reserved[4]
, in->reserved[5], in->reserved[6]);
INFO_MSG("ID STR: %.24s", in->id);
INFO_MSG("LEGAL: %.50s", in->legal);
INFO_MSG("PROGRAM NAME: %.16s", in->program_name);
INFO_MSG("EXTRA: %.6s", in->extra);
FILE *stream = fopen("ipl.inc", "wb");
if(stream == NULL) {
ERROR_MSG("failed to open ipl.inc: %s", strerror(errno));
} else {
fprintf(stream, "IPLBLK: .db $%02x, $%02x, $%02x\n", in->load_start_record[0], in->load_start_record[1], in->load_start_record[2]);
fprintf(stream, "IPLBKN: .db $%02x\n", in->load_sector_count);
fprintf(stream, "IPLSTA: .dw $%02x%02x\n", in->load_store_address[1], in->load_store_address[0]);
fprintf(stream, "IPLJMP: .dw $%02x%02x\n", in->load_exec_address[1], in->load_exec_address[0]);
fprintf(stream, "IPLMPR: .db $%02x, $%02x, $%02x, $%02x, $%02x\n", in->mpr[0], in->mpr[1], in->mpr[2], in->mpr[3], in->mpr[4]);
fprintf(stream, "OPENMODE: .db $%02x\n", in->opening_mode);
fprintf(stream, "GRPBLK: .db $%02x, $%02x, $%02x\n", in->opening_gfx_record[0], in->opening_gfx_record[1], in->opening_gfx_record[2]);
fprintf(stream, "GRPBLN: .db $%02x\n", in->opening_gfx_sector_count);
fprintf(stream, "GRPADR: .dw $%02x%02x\n", in->opening_gfx_read_address[1], in->opening_gfx_read_address[0]);
fprintf(stream, "ADPBLK: .db $%02x, $%02x, $%02x\n", in->opening_adpcm_record[0], in->opening_adpcm_record[1], in->opening_adpcm_record[2]);
fprintf(stream, "ADPBLN: .db %02x\n", in->opening_adpcm_sector_count);
fprintf(stream, "ADPRATE: .db $%02x\n", in->opening_adpcm_sampling_rate);
fprintf(stream, "RESERVED: .db $%02x, $%02x, $%02x, $%02x, $%02x, $%02x, $%02x\n",
in->reserved[0], in->reserved[1], in->reserved[2], in->reserved[3],
in->reserved[4], in->reserved[5], in->reserved[6]);
fprintf(stream, "ID STR: .db \"%.24s\"", in->id);
for(int i=23; (i>=0) && (in->id[i] == '\0'); i--) {
fprintf(stream, ",0");
}
fputc('\n', stream);
fprintf(stream, "LEGAL: .db \"%.50s\"", in->legal);
for(int i=49; (i>=0) && (in->legal[i] == '\0'); i--) {
fprintf(stream, ",0");
}
fputc('\n', stream);
fprintf(stream,"PROGRAM NAME: .db \"%.16s\"\n", in->program_name);
fprintf(stream,"EXTRA: .db \"%.6s\"\n", in->extra);
fclose(stream);
}
}
// Read IPL data from file.
bool ipl_read(IPL *out, const char *filename) {
bool ret = false;
FILE *in = fopen(filename, "rb");
if(in == NULL) {
ERROR_MSG("Failed to open %s: %s", filename, strerror(errno));
} else {
if(fseek(in, 0x800, SEEK_SET)) {
ERROR_MSG("Failed to seek to IPL header in %s: %s", filename, strerror(errno));
} else if(ipl_read_header(out, in, filename)) {
ipl_print(out);
ret = true;
}
fclose(in);
}
return ret;
}
// Get irq code offsets from IPL.
bool ipl_sections(IPL *in, SectionArray *out) {
assert(in != NULL);
assert(out != NULL);
assert(out->data != NULL);
static const char *section_name[2] = { "cd_start", "gfx_start" };
static const char *section_filename[2] = { "cd_start.asm", "gfx_start.bin" };
bool ret =true;
int extra = 0;
if(in->load_sector_count) { extra++; }
if(in->opening_gfx_sector_count) { extra++; }
if(extra == 0) {
INFO_MSG("No section found from IPL data.");
} else {
size_t j = out->count;
for(int k=0; ret && (k<extra); k++) {
Section tmp = {0};
tmp.mpr[0] = 0xff;
tmp.mpr[1] = 0xf8;
tmp.mpr[7] = 0x00;
for(int i=0; i<5; i++) {
tmp.mpr[2+i] = 0x80 + in->mpr[i];
}
if(section_array_add(out, &tmp) < 0) {
ret = false;
}
}
if(ret) {
// "CD boot"
if(in->load_sector_count) {
Section *section = &out->data[j++];
uint32_t record = (in->load_start_record[0] << 16) | (in->load_start_record[1] << 8) | in->load_start_record[2];
section->name = strdup(section_name[0]);
section->type = SECTION_TYPE_CODE;
section->page = section->mpr[in->load_exec_address[1]>>5];
section->logical = (in->load_exec_address[1] << 8) | in->load_exec_address[0];
section->offset = record * 2048;
section->size = in->load_sector_count * 2048;
section->output = strdup(section_filename[0]);
}
// "GFX"
if(in->opening_gfx_sector_count) {
Section *section = &out->data[j++];
uint32_t record = (in->opening_gfx_record[0] << 16) | (in->opening_gfx_record[1] << 8) | in->opening_gfx_record[2];
section->name = strdup(section_name[1]);
section->type = SECTION_TYPE_DATA;
section->page = section->mpr[in->opening_gfx_read_address[1]>>5];
section->logical = (in->opening_gfx_read_address[1] << 8) | in->opening_gfx_read_address[0];
section->offset = record * 2048;
section->size = in->opening_gfx_sector_count * 2048;
section->output = strdup(section_filename[1]);
section->data.type = DATA_TYPE_BINARY;
section->data.element_size = 1;
section->data.elements_per_line = 16;
}
}
}
return ret;
}