mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-05 18:44:05 +02:00
12671e163c
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22690 3c298f89-4303-0410-b956-a3cf2f4a3e73
51 lines
1.2 KiB
Python
Executable File
51 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
"""
|
|
Create firmware for 4/8MB Bifferboards, suitable for uploading using
|
|
either bb_upload8.py or bb_eth_upload8.py
|
|
"""
|
|
|
|
import struct, sys
|
|
|
|
# Increase the kmax value if the script gives errors about the kernel being
|
|
# too large. You need to set the Biffboot kmax value to the same value you
|
|
# use here.
|
|
kmax = 0x10
|
|
|
|
# No need to change this for 4MB devices, it's only used to tell you if
|
|
# the firmware is too large!
|
|
flash_size = 0x800000
|
|
|
|
# This is always the same, for 1MB, 4MB and 8MB devices
|
|
config_extent = 0x6000
|
|
|
|
kernel_extent = kmax * 0x10000
|
|
|
|
if __name__ == "__main__":
|
|
|
|
if len(sys.argv) != 4:
|
|
print "usage: mkimg_bifferboard.py <kernel> <rootfs> <output file>"
|
|
sys.exit(-1)
|
|
|
|
bzimage = sys.argv[1]
|
|
rootfs = sys.argv[2]
|
|
target = sys.argv[3]
|
|
|
|
# Kernel first
|
|
fw = file(bzimage).read()
|
|
if len(fw) > (kernel_extent - config_extent):
|
|
raise IOError("Kernel too large")
|
|
|
|
# Pad up to end of kernel partition
|
|
while len(fw) < (kernel_extent - config_extent):
|
|
fw += "\xff"
|
|
|
|
fw += file(rootfs).read()
|
|
|
|
# Check length of total
|
|
if len(fw) > (flash_size - 0x10000 - config_extent):
|
|
raise IOError("Rootfs too large")
|
|
|
|
file(target,"wb").write(fw)
|
|
print "Firmware written to '%s'" % target
|