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#!/usr/bin/python3
"""
This script generates a default baseboard fru file.
"""
def create_fru(name):
if len(name) > 16:
raise Exception('Product Name Too Large: {}'.format(name))
fill_char = ord('.')
eof = 0xC1
filename = '{}.fru.bin'.format(name)
name = name.encode('ascii')
name_len = (0x3 << 6) | len(name)
# internal area
internal = [0x01] + ([0] * 6) + [0x01]
# chassis area
chassis = [0x01, # Chassis Info Area Format Version Bit Fields
0xFF, # Chassis Info Area Length (in multiples of 8 bytes)
0x17] # Chassis Type (Main Server Chassis)
fill_len = 18
# Chassis Part Number
chassis += [0x3 << 6 | fill_len] + ([fill_char] * fill_len)
# Chassis Serial Number
chassis += [0x3 << 6 | fill_len] + ([fill_char] * fill_len)
fill_len = 31
chassis += [0x3 << 6 | fill_len] + ([fill_char] * fill_len) # Info AM1
chassis += [0x3 << 6 | fill_len] + ([fill_char] * fill_len) # Info AM2
chassis.append(eof)
chassis.append(0) # need room for checksum
while len(chassis) % 8: # pad
chassis.append(0)
chassis[1] = int(len(chassis) / 8) # populate length
chassis[-1] = (256 - sum(chassis)) & 0xFF # populate checksum
# board area
board = [0x1, # Board Info Area Format Version Bit Fields
0xFF, # Board Info Area Length (in multiples of 8 bytes)
0x0, # Language Code
0x0, # Mfg. Date/Time
0x0, # Mfg. Date/Time
0x0, # Mfg. Date/Time
0xD1] # Product Manufacturer Name Len
corp = b'Intel Corporation'
board += bytearray(corp) # Manufacturer Name
board.append(name_len)
board += bytearray(name) # Board Product Name
fill_len = 12
board += [0x3 << 6 | fill_len] + ([fill_char] * fill_len) # board SN
fill_len = 10
board += [0x3 << 6 | fill_len] + ([fill_char] * fill_len) # board PN
version = b'FRU Ver 0.01'
board += [0x3 << 6 | len(version)] # FRU File version ID string
board += bytearray(version)
board.append(eof)
board.append(0) # need room for checksum
while len(board) % 8:
board.append(0)
board[1] = int(len(board) / 8) # populate length
board[-1] = (256 - sum(board)) & 0xFF # populate checksum
# product area
product = [1, # Product Info Area Format Version Bit Fields
0xFF, # Product Info Area Length (in multiples of 8 bytes)
0x0, # Language Code
0xD1] # Product Manufacturer Name Len
product += bytearray(corp) # Manufacturer Name
product.append(name_len) # Product Name Len
product += bytearray(name) # Product Name
fill_len = 10
# Product Part Number
product += [0x3 << 6 | fill_len] + ([fill_char] * fill_len)
# Product Version
fill_len = 20
product += [0x3 << 6 | fill_len] + ([fill_char] * fill_len)
# Product Serial Number
fill_len = 12
product += [0x3 << 6 | fill_len] + ([fill_char] * fill_len)
# Asset Tag
fill_len = 20
product += [0x3 << 6 | fill_len] + ([fill_char] * fill_len)
product.append(0xC0) # FRU File ID (Not used)
product.append(eof)
product.append(0) # need room for checksum
while len(product) % 8:
product.append(0)
product[1] = int(len(product) / 8)
product[-1] = (256 - sum(product)) & 0xFF
header = [0x1]
length = 1 # internal
header.append(length)
length += int(len(internal) / 8)
header.append(length)
length += int(len(chassis) / 8)
header.append(length)
length += int(len(board) / 8)
header.append(length)
header.append(0)
header.append(0)
header.append((256 - sum(header)) & 0xFF)
result = header + internal + chassis + board + product
while len(result) < 0x1FF:
result.append(0)
result = bytearray(result)
# print(result)
with open(filename, 'wb') as out:
out.write(result)
if __name__ == '__main__':
product_name = input('Enter Product Name: ')
create_fru(product_name)
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