//----------------------------------------------------------------------------
//
// Module: ram_formulas.js
// Version: 2010.0
// Purpose: RAM computation for file system components
//
//----------------------------------------------------------------------------
//
// Copyright 2010, Blunk Microsystems
// ALL RIGHTS RESERVED
//
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// globals
//----------------------------------------------------------------------------
var strDevType = "UNKNOWN";
var intFopenMax = 64;
var intFilenameMax = 128;
var intNumBlocks = 0;
var intMaxBadBlocks = 0;
var intBlockSize = 16;
var intPageSize = 512;
var intMaxNumVolumes = 0;
var intVolID = 0;
var intMaxCellIndex = 0;
var intSystemRam = 0;
var intVolumesRam = 0;
var Volumes = new Array();
//----------------------------------------------------------------------------
// setDevType: Figure out device type and based on that enable/disable
// max bad blocks field
//----------------------------------------------------------------------------
function setDevType()
{
var orig_type = strDevType;
// figure out which device type is selected
var dev_type = document.getElementById("device_type");
if (!dev_type)
return;
strDevType = dev_type.options[dev_type.selectedIndex].value;
// if NAND or NAND-NDM turn on the max bad blocks field
if (strDevType == "NAND" || strDevType == "NAND_NDM")
show("max_bad_blocks_label");
else
hide("max_bad_blocks_label");
// if moving to/from SD/MMC/CF adjust labels for the PageSize, BlockSize and NumberBlocks fields
if ((strDevType == "SD_MMC_CF" || orig_type == "SD_MMC_CF") && strDevType != orig_type)
{
var num_blocks_label = document.getElementById("device_num_blocks_label");
// if switching from FAT only enable block size, page size and set number of block label back to original
if (orig_type == "SD_MMC_CF")
{
show("block_size_label");
show("page_size_label");
num_blocks_label.innerHTML = "Number of Blocks:";
}
// else disable block size, page size and rename num blocks to num FAT sectors
else
{
hide("block_size_label");
hide("page_size_label");
num_blocks_label.innerHTML = "Number of FAT sectors:";
}
}
// whenever the device type is changed, remove all volumes
if (strDevType != orig_type)
removeAllVolumes();
setBlockSize();
setPageSize();
}
//----------------------------------------------------------------------------
// setBlockSize: Figure out block size
//----------------------------------------------------------------------------
function setBlockSize()
{
var block_size = document.getElementById("block_size");
if (!block_size)
return;
intBlockSize = parseInt(block_size.options[block_size.selectedIndex].value) * 1024;
}
function getBlockSize()
{
var block_size = document.getElementById("block_size");
if (!block_size)
return 0;
return parseInt(block_size.options[block_size.selectedIndex].value) * 1024;
}
//----------------------------------------------------------------------------
// setPageSize: Figure out page size
//----------------------------------------------------------------------------
function setPageSize()
{
var page_size = document.getElementById("page_size");
if (!page_size)
return;
intPageSize = parseInt(page_size.options[page_size.selectedIndex].value);
}
function getPageSize()
{
var page_size = document.getElementById("page_size");
if (!page_size)
return 0;
return parseInt(page_size.options[page_size.selectedIndex].value);
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
function hide(el_id)
{
var el = document.getElementById(el_id);
if (el)
el.style.display = 'none';
}
function show(el_id)
{
var el = document.getElementById(el_id);
if (el)
{
el.style.display = '';
el.disabled = false;
}
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
function getVolObj(obj_lbl, vid)
{
var i;
// Look for volume
for (i = 0;; ++i)
{
// if volume not found, return
if (i == intMaxNumVolumes)
return {obj:null, vol_indx:-1};
// Skip passed empty volumes
if (Volumes[i] == null)
continue;
// if volume found, stop looking
if (Volumes[i].id == vid)
break;
}
// return handle to object for volume along with volume index in list of volumes
return {obj:document.getElementById(obj_lbl), vol_indx:i};
}
//----------------------------------------------------------------------------
// setFatType: Set a FAT volume type 12/16/32
//----------------------------------------------------------------------------
function setFatType(vid)
{
// get handle to volume's FAT type
var fat_type = getVolObj("VFT_" + vid, vid);
if (!fat_type.obj)
return;
// remember selection
Volumes[fat_type.vol_indx].fat_type = fat_type.obj.value;
}
//----------------------------------------------------------------------------
// setFatClustSz: Set a FAT volume cluster size
//----------------------------------------------------------------------------
function setFatClustSz(vid)
{
// get handle to volume's FAT cluster size
var fat_clust_sz = getVolObj("FCS_" + vid, vid);
if (!fat_clust_sz.obj)
return;
// remember selection
Volumes[fat_clust_sz.vol_indx].fat_clust_sz = fat_clust_sz.obj.value;
}
//----------------------------------------------------------------------------
// volHTMLHeader: Create header part of HTML table for a volume display
//----------------------------------------------------------------------------
function volHTMLHeader(vid, vtype)
{
var selection_type;
// setup pull down FS options - for SD only FAT available
if (strDevType == "SD_MMC_CF")
selection_type = "Target-FAT";
// for non SD - FFS, FAT+FTL, FTL, ZFS
else
{
var MenuOptions = new Array();
MenuOptions[0] = " ";
MenuOptions[1] = " ";
MenuOptions[2] = " ";
MenuOptions[3] = " ";
MenuOptions[4] = " ";
var i = 0;
if (vtype == "FFS")
i = 1;
else if (vtype == "FAT")
i = 2;
else if (vtype == "FTL")
i = 3;
else if (vtype == "ZFS")
i = 4;
selection_type =
" ";
}
// setup header with FS selection options
var header =
"
" +
" " +
"
" +
"
Volume #" + vid + " Information
" +
"
" +
"
" +
"
" +
"
" +
" Volume Type" +
"
" +
"
" +
selection_type +
"
" +
"
";
return header;
}
//----------------------------------------------------------------------------
// volHTMLFooter: Create footer part of HTML table for a volume display
//----------------------------------------------------------------------------
function volHTMLFooter(vid)
{
var footer =
"
";
return footer;
}
//----------------------------------------------------------------------------
// volHTMLContent: Create volume contents based on volume/device types
//----------------------------------------------------------------------------
function volHTMLContent(vid, vtype)
{
// If no FS volume type selected, no contents
if (vtype == "NOFS")
return "";
var content, num_blocks_label, px_height = 70;
// All volumes have a 'number of blocks'/'number of FAT sectors' label
if (strDevType == "SD_MMC_CF")
number_of_blocks_label = " Volume Number of FAT sectors:";
else
number_of_blocks_label = " Volume Number of Blocks:";
content =
"
" +
"
" +
number_of_blocks_label +
"
" +
"
" +
" " +
"
" +
"
";
px_height += 30;
// FFS/FAT volumes have an FOPEN_MAX field
if (vtype == "FAT" || vtype == "FFS")
{
content +=
"
" +
"
" +
" Volume FOPEN_MAX:" +
"
" +
"
" +
" " +
"
" +
"
";
px_height += 30;
}
// if not a SD/CF/HD FAT volume, add 2 extra fields based on volume type
if (strDevType != "SD_MMC_CF")
{
// For FAT+FTL/FTL volumes
if (vtype == "FAT" || vtype == "FTL")
{
// If NDM/NOR add FTL cached pages field
if (strDevType == "NAND_NDM" || strDevType == "NOR")
{
content +=
"
";
px_height += 60;
}
}
// For FFS/ZFS volumes add avg. number of file/dirs and avg. file/dir name length
else
{
content +=
"
" +
"
" +
" Avg. Number of Files/Dirs:" +
"
" +
"
" +
" " +
"
" +
"
" +
"
" +
"
" +
" Avg. File/Dir Name Length:" +
"
" +
"
" +
" " +
"
" +
"
";
px_height += 60;
}
}
// If FAT volume, add FAT cluster size and FAT type selection fields
if (vtype == "FAT")
{
content +=
"
" +
"
" +
" FAT Cluster Size:" +
"
" +
"
" +
" " +
"
" +
"
" +
"
" +
"
" +
" FAT type:" +
"
" +
"
" +
" " +
"
" +
"
";
px_height += 60;
}
return content;
}
//----------------------------------------------------------------------------
// addNewVolume: Enter information for a new volume
//----------------------------------------------------------------------------
function addNewVolume()
{
var volumes = document.getElementById("volumes_tr");
if (!volumes)
return;
// Create new volume id for this volume
++intVolID;
// insert new volume into row of volumes at the end
var cell = volumes.insertCell(-1);
var new_vol = new Volume(1, intMaxCellIndex++, intVolID);
// for SD/MMC/CF devices, volume is already set to TargetFAT - create contents
var content = "";
if (strDevType == "SD_MMC_CF")
{
content = volHTMLContent(intVolID, "FAT");
new_vol.type = "FAT";
intBlockSize = FAT_SECT_SZ;
}
// set the HTML for this volume
cell.innerHTML =
"