384 lines
10 KiB
C
384 lines
10 KiB
C
/* *****************************************************************************
|
|
* misc/backup.c -- backup software elements of the calculator.
|
|
* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
|
|
*
|
|
* This file is part of libp7.
|
|
* libp7 is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 3.0 of the License,
|
|
* or (at your option) any later version.
|
|
*
|
|
* libp7 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with libp7; if not, see <http://www.gnu.org/licenses/>.
|
|
* ************************************************************************** */
|
|
#include <libp7/internals.h>
|
|
#include <string.h>
|
|
|
|
/* ************************************************************************** */
|
|
/* Decode a CASIOWIN entry */
|
|
/* ************************************************************************** */
|
|
/* Raw structure */
|
|
struct casiowin_entry {
|
|
/* contains "CASIOWIN" */
|
|
unsigned char magic[0x08];
|
|
|
|
/* code that calls the subroutine at address 0x00010080 */
|
|
unsigned char call_os[0x0A];
|
|
|
|
/* alignment? */
|
|
unsigned char _align[0x0A];
|
|
|
|
/* marker for the OS updater PC program
|
|
* (appeared in 1.01, no longer used in OS2)
|
|
* - fx-9860G AU: "365E"
|
|
* - fx-9860G SD Slim: 0x80005D7C */
|
|
unsigned char marker[0x04];
|
|
|
|
/* version (added in OS 1.02): "xx.xx.xxxx" */
|
|
unsigned char version[0x0A];
|
|
|
|
/* alignment? */
|
|
unsigned char _align2[0x06];
|
|
|
|
/* unused */
|
|
unsigned char _unused[0x40];
|
|
|
|
/* syscall code */
|
|
unsigned char call_sys[0x0A];
|
|
|
|
/* alignment? */
|
|
unsigned char _align3[0x02];
|
|
|
|
/* syscall table address */
|
|
uint32_t syscall_table;
|
|
};
|
|
|
|
/**
|
|
* decode_entry:
|
|
* Decode an entry.
|
|
*
|
|
* @arg handle the handle.
|
|
* @arg entry the decoded thing.
|
|
* @arg raw the raw thing (uncasted).
|
|
* @return the error code (0 if ok)
|
|
*/
|
|
|
|
static int decode_entry(p7_handle_t *handle, p7_casiowin_entry_t *entry,
|
|
struct casiowin_entry *raw)
|
|
{
|
|
(void)handle;
|
|
/* check the maaa-gic */
|
|
if (!memcmp(raw->magic, "CASIOWIN", 8))
|
|
return (p7_error_checksum);
|
|
|
|
/* decode */
|
|
entry->version.major = p7_getascii(&raw->version[0], 2);
|
|
entry->version.minor = p7_getascii(&raw->version[3], 2);
|
|
entry->version.rev = p7_getascii(&raw->version[6], 4);
|
|
entry->syscall_table_offset = be32toh(raw->syscall_table);
|
|
|
|
/* log */
|
|
log_info("OS version is %02u.%02u.%04u",
|
|
entry->version.major, entry->version.minor, entry->version.rev);
|
|
log_info("OS syscall table offset is 0x%08" PRIxP7INT,
|
|
entry->syscall_table_offset);
|
|
|
|
/* no error */
|
|
return (0);
|
|
}
|
|
|
|
/* ************************************************************************** */
|
|
/* Get a CASIOWIN entry */
|
|
/* ************************************************************************** */
|
|
/**
|
|
* p7_backup_casiowin_entry:
|
|
* Backup the CASIOWIN entry.
|
|
*
|
|
* @arg handle the libp7 handle
|
|
* @arg entry the entry to fill (0x80 bytes).
|
|
* @return the error code (0 if ok)
|
|
*/
|
|
|
|
int p7_backup_casiowin_entry(p7_handle_t *handle, p7_casiowin_entry_t *entry)
|
|
{
|
|
int err;
|
|
|
|
/* make checks */
|
|
chk_handle(handle);
|
|
chk_active(handle);
|
|
|
|
/* send command packet */
|
|
log_info("sending command");
|
|
if ((err = p7_send_cmdbak_reqcwe(handle))) {
|
|
log_fatal("couldn't send command/get response");
|
|
return (err);
|
|
} else if (response.type == p7_pt_error && response.code == p7_err_other) {
|
|
log_fatal("backup is unsupported.");
|
|
return (p7_error_unsupported);
|
|
} else if (response.type != p7_pt_ack) {
|
|
log_fatal("received an invalid answer");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* send the roleswap */
|
|
log_info("sending the roleswap");
|
|
if ((err = p7_send_roleswp(handle))) {
|
|
log_fatal("couldn't send roleswap");
|
|
return (err);
|
|
} else if (response.type != p7_pt_cmd || response.code != 0x53) {
|
|
log_fatal("didn't receive correct command");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* get the data */
|
|
struct casiowin_entry raw;
|
|
err = p7_get_data(handle, &raw, sizeof(struct casiowin_entry), 0, NULL);
|
|
if (err) return (err);
|
|
|
|
/* decode and return */
|
|
return (decode_entry(handle, entry, &raw));
|
|
}
|
|
|
|
/* ************************************************************************** */
|
|
/* Backup the bootcode */
|
|
/* ************************************************************************** */
|
|
/**
|
|
* p7_backup_boot:
|
|
* Backup the boot code.
|
|
*
|
|
* My current theory is that the bootcode size is in the bootcode, that
|
|
* the OS reads it or not, and that even if the OS accepts bootcode backup
|
|
* and reads it, the bootcode had blanked its size... so in order to make it
|
|
* work correctly, I'll have to hardcode the size of the bootcode (64 KiB
|
|
* on all of the known models until now).
|
|
*
|
|
* @arg handle the libp7 handle
|
|
* @arg buffer the destination buffer.
|
|
* @arg disp the display function
|
|
* @return the error code (0 if ok)
|
|
*/
|
|
|
|
#define bootcode_size (0x10000)
|
|
int p7_backup_boot(p7_handle_t *handle, const p7_buffer_t *buffer,
|
|
p7_disp_t disp)
|
|
{
|
|
int err;
|
|
|
|
/* make checks */
|
|
chk_handle(handle);
|
|
chk_active(handle);
|
|
chk_bufwrite(buffer);
|
|
|
|
/* send command packet */
|
|
log_info("sending command");
|
|
if ((err = p7_send_cmdbak_reqboot(handle))) {
|
|
log_fatal("couldn't send command/get response");
|
|
return (err);
|
|
} else if (response.type == p7_pt_error && response.code == p7_err_other) {
|
|
log_fatal("backup is unsupported.");
|
|
return (p7_error_unsupported);
|
|
} else if (response.type != p7_pt_ack) {
|
|
log_fatal("received an invalid answer");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* send the roleswap */
|
|
log_info("sending the roleswap");
|
|
if ((err = p7_send_roleswp(handle))) {
|
|
log_fatal("couldn't send roleswap");
|
|
return (err);
|
|
} else if (response.type != p7_pt_cmd) {
|
|
log_fatal("didn't receive command");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* get the data */
|
|
if ((err = p7_get_buffer(handle, buffer, bootcode_size, 0, disp)))
|
|
return (err);
|
|
|
|
/* we're good */
|
|
return (0);
|
|
}
|
|
|
|
#ifndef P7_DISABLED_FILE
|
|
/**
|
|
* p7_backup_bootfile:
|
|
* Backup the boot to a FILE.
|
|
*
|
|
* @arg handle the handle.
|
|
* @arg file the FILE.
|
|
* @arg disp the display callback.
|
|
* @return the error code (0 if ok).
|
|
*/
|
|
|
|
int p7_backup_bootfile(p7_handle_t *handle, FILE *file, p7_disp_t disp)
|
|
{
|
|
chk_iswrite(file);
|
|
p7_buffer_t buffer = {
|
|
.cookie = file,
|
|
.write = p7_filebuffer_write
|
|
};
|
|
|
|
return (p7_backup_boot(handle, &buffer, disp));
|
|
}
|
|
#endif
|
|
/* ************************************************************************** */
|
|
/* Backup the ROM */
|
|
/* ************************************************************************** */
|
|
/**
|
|
* p7_backup_rom:
|
|
* Backup the Flash ROM.
|
|
*
|
|
* @arg handle the libp7 handle.
|
|
* @arg file the filestream.
|
|
* @arg disp the display function.
|
|
* @return the error code (0 if ok)
|
|
*/
|
|
|
|
#define rom_size (handle->_server.flash_rom_capacity)
|
|
int p7_backup_rom(p7_handle_t *handle, const p7_buffer_t *buffer,
|
|
p7_disp_t disp)
|
|
{
|
|
int err;
|
|
|
|
/* make checks */
|
|
chk_handle(handle);
|
|
chk_active(handle);
|
|
chk_bufwrite(buffer);
|
|
|
|
/* send command packet */
|
|
log_info("sending command");
|
|
if ((err = p7_send_cmdbak_reqrom(handle))) {
|
|
log_fatal("couldn't send command/get response");
|
|
return (err);
|
|
} else if (response.type == p7_pt_error && response.code == p7_err_other) {
|
|
log_fatal("backup is unsupported.");
|
|
return (p7_error_unsupported);
|
|
} else if (response.type != p7_pt_ack) {
|
|
log_fatal("received an invalid answer");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* send the roleswap */
|
|
log_info("sending the roleswap");
|
|
if ((err = p7_send_roleswp(handle))) {
|
|
log_fatal("couldn't send roleswap");
|
|
return (err);
|
|
} else if (response.type != p7_pt_cmd) {
|
|
log_fatal("didn't receive command");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* get the data */
|
|
if ((err = p7_get_buffer(handle, buffer, rom_size, 0, disp)))
|
|
return (err);
|
|
|
|
/* we're good */
|
|
return (0);
|
|
}
|
|
|
|
#ifndef P7_DISABLED_FILE
|
|
/**
|
|
* p7_backup_romfile:
|
|
* Backup the ROM to a FILE.
|
|
*
|
|
* @arg handle the handle.
|
|
* @arg file the FILE.
|
|
* @arg disp the display callback.
|
|
* @return the error code (0 if ok).
|
|
*/
|
|
|
|
int p7_backup_romfile(p7_handle_t *handle, FILE *file, p7_disp_t disp)
|
|
{
|
|
chk_iswrite(file);
|
|
p7_buffer_t buffer = {
|
|
.cookie = file,
|
|
.write = p7_filebuffer_write
|
|
};
|
|
|
|
return (p7_backup_rom(handle, &buffer, disp));
|
|
}
|
|
#endif
|
|
/* ************************************************************************** */
|
|
/* Backup the RAM */
|
|
/* ************************************************************************** */
|
|
/**
|
|
* p7_backup_ram:
|
|
* Backup the RAM.
|
|
*
|
|
* @arg handle the libp7 handle.
|
|
* @arg file the filestream.
|
|
* @arg disp the display function.
|
|
* @return the error code (0 if ok)
|
|
*/
|
|
|
|
#define ram_size (0x10000)
|
|
int p7_backup_ram(p7_handle_t *handle, const p7_buffer_t *buffer,
|
|
p7_disp_t disp)
|
|
{
|
|
int err;
|
|
|
|
/* make checks */
|
|
chk_handle(handle);
|
|
chk_active(handle);
|
|
chk_bufwrite(buffer);
|
|
|
|
/* send command packet */
|
|
log_info("sending command");
|
|
if ((err = p7_send_cmdbak_reqram(handle))) {
|
|
log_fatal("couldn't send command/get response");
|
|
return (err);
|
|
} else if (response.type == p7_pt_error && response.code == p7_err_other) {
|
|
log_fatal("backup is unsupported.");
|
|
return (p7_error_unsupported);
|
|
} else if (response.type != p7_pt_ack) {
|
|
log_fatal("received an invalid answer");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* send the roleswap */
|
|
log_info("sending the roleswap");
|
|
if ((err = p7_send_roleswp(handle))) {
|
|
log_fatal("couldn't send roleswap");
|
|
return (err);
|
|
} else if (response.type != p7_pt_cmd) {
|
|
log_fatal("didn't receive command");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* get the data */
|
|
if ((err = p7_get_buffer(handle, buffer, ram_size, 0, disp)))
|
|
return (err);
|
|
|
|
/* we're good */
|
|
return (0);
|
|
}
|
|
|
|
#ifndef P7_DISABLED_FILE
|
|
/**
|
|
* p7_backup_ramfile:
|
|
* Backup the RAM to a FILE.
|
|
*
|
|
* @arg handle the handle.
|
|
* @arg file the FILE.
|
|
* @arg disp the display callback.
|
|
* @return the error code (0 if ok).
|
|
*/
|
|
|
|
int p7_backup_ramfile(p7_handle_t *handle, FILE *file, p7_disp_t disp)
|
|
{
|
|
chk_iswrite(file);
|
|
p7_buffer_t buffer = {
|
|
.cookie = file,
|
|
.write = p7_filebuffer_write
|
|
};
|
|
|
|
return (p7_backup_ram(handle, &buffer, disp));
|
|
}
|
|
#endif
|