source: trunk/platforms/tsar_generic_xbar/scripts/gen_hdd.py

Last change on this file was 1023, checked in by meunier, 9 years ago
  • Update the scripts to use a common file hard_params.py in both gen_arch_info and gen_hdd
  • Adding the P_WIDTH parameter in the topcell
  • Property svn:executable set to *
File size: 3.4 KB
Line 
1#!/usr/bin/python
2
3import os
4import sys
5import subprocess
6
7
8
9
10def hdd_img(partition_root, target, fs_type, bootloader_name):
11    print("### Creating HDD_IMG")
12
13    # echo "Dont forget to check the numbers of sectors for each file"
14    # QM: what does that mean?
15   
16    if fs_type != "fat32" and fs_type != "ext2":
17        print "*** Error: unsupported filesystem type:", fs_type
18        sys.exit()
19   
20    if not(os.path.isdir(partition_root)):
21        print "*** Error: Partition root is not a valid directory"
22        sys.exit()
23   
24   
25    print sys.argv[0], ": Target = %s, fs type = %s, Partition root = %s" % (target, fs_type, partition_root)
26   
27    if not os.path.isfile(bootloader_name):
28        print "*** Error: bootloader file name invalid: %s" % (bootloader_name)
29        sys.exit()
30   
31    # Remove current disk image if it exists, otherwise the creation fails
32    if (os.path.isfile(target)):
33        print "rm", target
34        os.remove(target)
35   
36    size_bytes = 512000
37    sector_size = 4096 # must be 512 Bytes for generic_leti platform
38    sectors_per_cluster = 8
39    boot_size = os.path.getsize(bootloader_name)
40   
41    sectors_boot = (boot_size / sector_size) + 1
42   
43    # reserved sector will begin from sector 2 and will contain the boot_loader code,
44    # the kernel image and the architecture informations
45    # We put the backup of VBR (MBR) at the end of the reserved sector
46    offset = 2
47    reserved_sectors = offset + sectors_boot + 1
48    back_up_sector = reserved_sectors - 1 # last reserved sector
49   
50    print "# %d reserved sectors --> backup at back up sector %d" % (reserved_sectors, back_up_sector) 
51    # the first two cluster are not in the data region
52    # data_region_clusters=$cluster_size-2
53   
54    #create partition
55    if fs_type == "fat32":
56        cmd = ['mkfs.vfat', '-C', '-F', '32', '-f', '1',
57                    '-r', '512',
58                    '-R', str(reserved_sectors),
59                    '-S', str(sector_size),
60                    '-s', str(sectors_per_cluster),
61                    '-b', str(back_up_sector),
62                    '-i', 'f7120c4f',
63                    '-n', 'hdd',
64                    '-v', target, str(size_bytes)]
65        print(subprocess.list2cmdline(cmd))
66        subprocess.call(cmd)
67        # copy root
68        for dir_or_file in os.listdir(partition_root):
69            cmd = ['mcopy', '-s', '-i', target, os.path.join(partition_root, dir_or_file), '::/']
70            print(subprocess.list2cmdline(cmd))
71            subprocess.call(cmd)
72   
73    else:
74        cmd = ['mkfs.ext2', target]
75        print(subprocess.list2cmdline(cmd))
76        subprocess.call(cmd)
77       
78    # copy bootloader, arch-info (boot-info) and kernel-img in reserved sectors from sector 2
79    print "# Inserting boot_loader at sector %d" % (offset)
80         
81    cmd = ['dd', 'bs=%d' % sector_size, 'seek=%d' % offset, 'count=%d' % sectors_boot, 'conv=notrunc', 'if=%s' % bootloader_name, 'of=%s' % target]
82    print(subprocess.list2cmdline(cmd))
83    subprocess.call(cmd)
84
85    print "### End of HDD image generation"
86
87
88if __name__ == '__main__':
89
90    if len(sys.argv) != 5:
91        print "Usage: %s path/to/partition/root <hdd-filename> <fs_type> <bootloader-filename>" % sys.argv[0] 
92        sys.exit()
93   
94    partition_root = sys.argv[1]
95    target = sys.argv[2] # hdd wanted filename
96    fs_type = sys.argv[3]
97    bootloader_name = sys.argv[4]
98   
99    hdd_img(partition_root, target, fs_type, bootloader_name)
100
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