def gen_flash_map_bin (flash_map_file, comp_list):
flash_map = FLASH_MAP()
for comp in reversed(comp_list):
desc = FLASH_MAP_DESC ()
if comp['bname'] not in FLASH_MAP.FLASH_MAP_COMPONENT_SIGNATURE:
if len(comp['bname']) < 4:
# For short names, prefix with '_'
bname = '_' * (4 - len(comp['bname'])) + comp['bname']
else:
# For long names, use the 1st 4 chars
bname = comp['bname'][:4]
desc.sig = bname.encode()
else:
desc.sig = FLASH_MAP.FLASH_MAP_COMPONENT_SIGNATURE[comp['bname']].encode()
desc.flags = comp['flag']
desc.offset = comp['offset']
desc.size = comp['size']
flash_map.add (desc)
flash_map.finalize ()
fd = open (flash_map_file, 'wb')
fd.write(flash_map)
for desc in flash_map.descriptors:
fd.write(desc)
fd.close()
def gen_flash_map_bin (flash_map_file, comp_list): flash_map = FLASH_MAP() for comp in reversed(comp_list): desc = FLASH_MAP_DESC () desc.sig = FLASH_MAP.FLASH_MAP_COMPONENT_SIGNATURE[comp['bname']].encode() desc.flags = comp['flag'] desc.offset = comp['offset'] desc.size = comp['size'] flash_map.add (desc) flash_map.finalize () fd = open (flash_map_file, 'wb') fd.write(flash_map) for desc in flash_map.descriptors: fd.write(desc) fd.close()
def decode_flash_map (flash_map_file, print_address = True):
if not os.path.exists(flash_map_file):
raise Exception("No layout file '%s' found !" % flash_map_file)
return
fmap_bins = open (flash_map_file, 'rb')
flash_map_data = bytearray(fmap_bins.read())
fmap_bins.close()
flash_map = FLASH_MAP.from_buffer (flash_map_data)
entry_num = (flash_map.length - sizeof(FLASH_MAP)) // sizeof(FLASH_MAP_DESC)
image_size = flash_map.romsize
image_base = 0x100000000 - image_size
flash_map_lines = [
"\nFlash Map Information:\n" \
"\t+------------------------------------------------------------------------+\n" \
"\t| FLASH MAP |\n" \
"\t| (RomSize = 0x%08X) |\n" \
"\t+------------------------------------------------------------------------+\n" \
"\t| NAME | OFFSET (BASE) | SIZE | FLAGS |\n" \
"\t+----------+------------------------+------------+-----------------------+\n" % image_size]
region = ' '
prev_rgn = 'TS'
disp_rgn = ''
for idx in range (entry_num):
desc = FLASH_MAP_DESC.from_buffer (flash_map_data, sizeof(FLASH_MAP) + idx * sizeof(FLASH_MAP_DESC))
flags = 'Compressed ' if (desc.flags & FLASH_MAP.FLASH_MAP_DESC_FLAGS['COMPRESSED']) else 'Uncompressed'
for rgn_name, rgn_flag in list(FLASH_MAP.FLASH_MAP_DESC_FLAGS.items()):
if rgn_flag == (desc.flags & 0x0F):
if rgn_flag & (FLASH_MAP.FLASH_MAP_DESC_FLAGS['NON_REDUNDANT'] | FLASH_MAP.FLASH_MAP_DESC_FLAGS['NON_VOLATILE']):
rgn_suf = ''
disp_rgn_suf = ''
else:
suffixes = 'B' if desc.flags & FLASH_MAP.FLASH_MAP_DESC_FLAGS['BACKUP'] else 'A'
rgn_suf = '_' + suffixes
disp_rgn_suf = ' ' + suffixes
region = ''.join([word[0] for word in rgn_name.split('_')]) + rgn_suf
disp_rgn = rgn_name.replace('_', ' ') + disp_rgn_suf
region = region.center(4, ' ')
disp_rgn = disp_rgn.center(23, ' ')
break
if region != ' ':
if region != prev_rgn:
prev_rgn = region
flash_map_lines.append (
"\t+------------------------------------------------------------------------+\n" \
"\t| %s |\n" \
"\t+------------------------------------------------------------------------+\n" % disp_rgn)
flags += ', '
flags += region
if print_address:
address = '0x%08X' % (desc.offset + image_base)
else:
address = ' ???????? '
flash_map_lines.append ("\t| %s | 0x%06x(%s) | 0x%06x | %s |\n" \
% (desc.sig.decode(), desc.offset, address, desc.size, flags))
flash_map_lines.append ("\t+----------+------------------------+------------+-----------------------+\n")
return ''.join(flash_map_lines)