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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Greg White
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include "inttypes.h"
#include "string.h"
#include "cpu.h"
#include "system.h"
#include "lcd.h"
#include "kernel.h"
#include "thread.h"
#include "ata.h"
#include "dir.h"
#include "fat.h"
#include "disk.h"
#include "font.h"
#include "adc.h"
#include "backlight.h"
#include "backlight-target.h"
#include "button.h"
#include "panic.h"
#include "power.h"
#include "file.h"
#include "common.h"
#include "rbunicode.h"
#include "usb.h"
#include "mmu-imx31.h"
#include "lcd-target.h"
#include "avic-imx31.h"
#include <stdarg.h>
#define TAR_CHUNK 512
#define TAR_HEADER_SIZE 157
char version[] = APPSVERSION;
char basedir[] = "/Content/0b00/00/"; /* Where files sent via MTP are stored */
int (*kernel_entry)(void);
extern void reference_system_c(void);
/* Dummy stub that creates C references for C functions only used by
assembly - never called */
void reference_files(void)
{
reference_system_c();
}
void untar(int tar_fd)
{
char header[TAR_HEADER_SIZE];
char copybuf[TAR_CHUNK];
char path[102];
int fd, i, size = 0, pos = 0;
while (1)
{
read(tar_fd, header, TAR_HEADER_SIZE);
if (*header == '\0') /* Check for EOF */
break;
/* Parse the size field */
size = 0;
for (i = 124 ; i < 124 + 11 ; i++) {
size = (8 * size) + header[i] - '0';
}
/* Skip rest of header */
pos = lseek(tar_fd, TAR_CHUNK - TAR_HEADER_SIZE, SEEK_CUR);
/* Make the path absolute */
strcpy(path, "/");
strcat(path, header);
if (header[156] == '0') /* file */
{
int rc, wc, total = 0;
fd = creat(path);
if (fd < 0)
{
printf("failed to create file (%d)", fd);
/* Skip the file */
lseek(tar_fd, (size + 511) & (~511), SEEK_CUR);
}
else
{
/* Copy the file over 512 bytes at a time */
while (total < size)
{
rc = read(tar_fd, copybuf, TAR_CHUNK);
pos += rc;
wc = write(fd, copybuf, MIN(rc, size - total));
if (wc < 0)
{
printf("write failed (%d)", wc);
break;
}
total += wc;
}
close(fd);
}
}
else if (header[156] == '5') /* directory */
{
int ret;
/* Remove the trailing slash */
if (path[strlen(path) - 1] == '/')
path[strlen(path) - 1] = '\0';
/* Create the dir */
ret = mkdir(path);
if (ret < 0 && ret != -4)
{
printf("failed to create dir (%d)", ret);
}
}
}
}
void main(void)
{
char buf[MAX_PATH];
char tarstring[6];
lcd_clear_display();
printf("Hello world!");
printf("Gigabeat S Rockbox Bootloader v.00000004");
system_init();
kernel_init();
printf("kernel init done");
int rc;
set_interrupt_status(IRQ_FIQ_ENABLED, IRQ_FIQ_STATUS);
rc = ata_init();
if(rc)
{
reset_screen();
error(EATA, rc);
}
printf("ata init done");
disk_init();
printf("disk init done");
rc = disk_mount_all();
if (rc<=0)
{
error(EDISK,rc);
}
/* Look for a tar file */
struct dirent_uncached* entry;
DIR_UNCACHED* dir;
int fd;
dir = opendir_uncached(basedir);
while ((entry = readdir_uncached(dir)))
{
if (*entry->d_name != '.')
{
snprintf(buf, sizeof(buf), "%s%s", basedir, entry->d_name);
fd = open(buf, O_RDONLY);
if (fd >= 0)
{
lseek(fd, 257, SEEK_SET);
rc = read(fd, tarstring, 5);
if (rc == 5)
{
tarstring[5] = 0;
if (strcmp(tarstring, "ustar") == 0)
{
printf("Found tar file. Unarchiving...");
lseek(fd, 0, SEEK_SET);
untar(fd);
close(fd);
printf("Removing tar file");
remove(buf);
break;
}
}
close(fd);
}
}
}
unsigned char *loadbuffer = (unsigned char *)0x0;
int buffer_size = 31*1024*1024;
rc = load_firmware(loadbuffer, "/.rockbox/rockbox.gigabeat", buffer_size);
if(rc < 0)
error((int)buf, rc);
system_prepare_fw_start();
if (rc == EOK)
{
kernel_entry = (void*) loadbuffer;
invalidate_icache();
rc = kernel_entry();
}
while (1);
}
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