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<?php
/*
FILE NAME : update_software.php
DESCRIPTION: update software on nand flash
REVISION: 1.00
AUTHOR: Oleg Dzhimiev <oleg@elphel.com>
LICENSE: AGPL, see http://www.gnu.org/licenses/agpl.txt
Copyright (C) 2016 Elphel, Inc.
*/
# hardcoded
$UPDATE_DIR = "/var/volatile/html/update";
$NAND_PATH = "/tmp/rootfs.ro";
$FLASH_LOG = "/var/volatile/html/flash.log";
$FLASH_LOG_LINK = "var/flash.log";
$UBI_MNT = "/tmp/ubi0";
$BKP_NAME = "elphel393_backup.tar.gz";
$BKP_DIR = "/etc/elphel393";
# update files
# file, expertise level, nand partition, size - see http://wiki.elphel.com/index.php?title=NAND_flash_boot_rootfs
# partitions are also listed in the device tree
# WARNING: DO NOT CHANGE
$UPDATE_LIST = array(
array(0,"boot.bin", "/dev/mtd0","0 2"),
array(0,"u-boot-dtb.img","/dev/mtd1","0 8"),
array(0,"devicetree.dtb","/dev/mtd2","0 8"),
array(0,"uImage", "/dev/mtd3","0 128"),
array(1,"rootfs.tar.gz", "",""),
array(0,"rootfs.ubi", "/dev/mtd4","0 2048","-s 2048 -O 2048"),
array(1,"rootfs.ubifs", "/dev/mtd4","/dev/ubi_ctrl -m 4","ubiupdatevol /dev/ubi0_0"),
);
//respond_xml($updatedir);
function lookup_name($name){
global $UPDATE_LIST;
foreach($UPDATE_LIST as $e){
if ($name==$e[1]) return $e;
}
return false;
}
function verify($v){
global $UPDATE_DIR;
global $NAND_PATH;
global $UPDATE_LIST;
$safe_list = array();
if (is_dir($UPDATE_DIR)){
foreach(scandir($UPDATE_DIR) as $e){
$tmp = lookup_name($e);
if ($tmp!=false){
if ($tmp[0]==0){
array_push($safe_list,$tmp);
}
}
}
}
if (count($safe_list)==0){
$tmp = "";
foreach($UPDATE_LIST as $e){
if($e[0]==0){
switch($e[1]){
case "boot.bin":
case "u-boot-dtb.img":
case "devicetree.dtb":
$comment = "(rarely updated)";
break;
case "uImage":
case "rootfs.ubi":
$comment = "(frequently updated)";
break;
default:
$comment = "";
}
$tmp .= "<li><b>${e[1]}</b> <span style='font-size:0.9em;'>${comment}</span></li>";
}
}
backup_note();
$msg = <<<TXT
<b style='color:red;'>ERROR</b>: Files not found. Accepted files are:
<ul>
$tmp
</ul>
TXT;
die($msg);
}else{
$tmp = "";
foreach($safe_list as $e){
$tmp .= "<li>{$e[1]}</li>";
}
if ($v) printf("Files to be flashed:<ul>$tmp</ul>");
}
//$safe_list is ready
if (is_dir($NAND_PATH)){
backup_note();
die("<b style='color:red'>ERROR</b>: Please boot from mmc (<a href='http://wiki.elphel.com/index.php?title=Tmp_manual#Boot'>instructions</a>)");
}else{
if ($v) {
backup_note();
printf("<span style='color:green'>Ready for flashing.</span>");
}
}
return $safe_list;
}
function backup_note(){
$tmp = strrpos($_SERVER['SCRIPT_NAME'],"/");
if ($tmp==0)
$base = $_SERVER['SCRIPT_NAME'];
else
$base = substr($_SERVER['SCRIPT_NAME'],0,$tmp+1);
print("<b>NOTE</b>: If flashing rootfs, please download a backup copy of <a href='$base?cmd=backup'>/etc/elphel393</a><br/>");
}
function nandflash($list){
global $UPDATE_DIR;
global $FLASH_LOG;
global $FLASH_LOG_LINK;
foreach($list as $e){
if ($e[0]==0){
exec("flash_unlock ${e[2]} >> $FLASH_LOG");
exec("flash_erase ${e[2]} ${e[3]} >> $FLASH_LOG");
if ($e[1]!="rootfs.ubi")
exec("nandwrite -n ${e[2]} -p $UPDATE_DIR/${e[1]} >> $FLASH_LOG");
else
exec("ubiformat ${e[2]} -f $UPDATE_DIR/${e[1]} ${e[4]} >> $FLASH_LOG");
}
}
print("Done. See/Download <a href='$FLASH_LOG_LINK'>flash.log</a>. Then power cycle.");
}
function backup(){
global $NAND_PATH;
global $UBI_MNT;
global $BKP_NAME;
global $BKP_DIR;
if (!is_dir($NAND_PATH)){
exec("flash_unlock /dev/mtd4");
exec("ubiattach /dev/ubi_ctrl -m 4");
if (!is_dir($UBI_MNT)) mkdir($UBI_MNT);
exec("mount -t ubifs -o ro /dev/ubi0_0 $UBI_MNT");
exec("tar -czvf var/$BKP_NAME -C ${UBI_MNT}${BKP_DIR} .");
exec("umount $UBI_MNT");
if (is_dir($UBI_MNT)) rmdir($UBI_MNT);
exec("ubidetach /dev/ubi_ctrl -m 4");
}else{
//booted from nand
exec("tar -czvf var/$BKP_NAME -C ${BKP_DIR} .");
}
header("Content-Type: application/octet-stream");
header('Content-Disposition: attachment; filename='.$BKP_NAME);
print(file_get_contents("var/$BKP_NAME"));
}
function remove(){
global $UPDATE_DIR;
exec("rm -rf $UPDATE_DIR/*; sync");
backup_note();
print("<b>NOTE</b>: All files have been removed from <b>$UPDATE_DIR</b>.");
}
$cmd = "donothing";
if (isset($_GET['cmd']))
$cmd = $_GET['cmd'];
else if (isset($argv[1]))
$cmd = $argv[1];
switch($cmd){
case "flash":
$flash_list = verify(false);
nandflash($flash_list);
break;
case "backup":
backup();
break;
case "remove":
remove();
break;
default:
verify(true);
}
?>