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-rwxr-xr-xtarget/linux/rdc/image/mkimg_bifferboard.py32
1 files changed, 21 insertions, 11 deletions
diff --git a/target/linux/rdc/image/mkimg_bifferboard.py b/target/linux/rdc/image/mkimg_bifferboard.py
index 040c46274e..5444abebd1 100755
--- a/target/linux/rdc/image/mkimg_bifferboard.py
+++ b/target/linux/rdc/image/mkimg_bifferboard.py
@@ -1,21 +1,31 @@
#!/usr/bin/env python
"""
- Create firmware for 8MB Bifferboards
- Firmware does not include the config blocks
- Firmware starts just after config
+ Create firmware for 4/8MB Bifferboards, suitable for uploading using
+ either bb_upload8.py or bb_eth_upload8.py
"""
import struct, sys
-kernel_extent = 0x200000
-config = 0x6000
+# 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> <64k JFFS> <output file>"
- sys.exit(0)
+ print "usage: mkimg_bifferboard.py <kernel> <rootfs> <output file>"
+ sys.exit(-1)
bzimage = sys.argv[1]
rootfs = sys.argv[2]
@@ -23,17 +33,17 @@ if __name__ == "__main__":
# Kernel first
fw = file(bzimage).read()
- if len(fw) > (kernel_extent - config):
+ if len(fw) > (kernel_extent - config_extent):
raise IOError("Kernel too large")
- # Pad up to 0x200000
- while len(fw) < (kernel_extent - config):
+ # 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) > (0x800000 - 0x10000 - 0x6000):
+ if len(fw) > (flash_size - 0x10000 - config_extent):
raise IOError("Rootfs too large")
file(target,"wb").write(fw)