[MLB-WIRELESS] Got a Minitar and feeling bored?
d_ashburner at hotmail.com
Wed Jul 13 17:17:01 EST 2005
I have posted a chaining bootloader you can install without risk of bricking
The hardware bootloader looks in flash at a couple of known offsets
(0x10000, 0x20000, 0x30000) for a CSYS header then loads what it finds into
RAM at the address in the header. Control is then passed to the RAM address.
This bootloader is wrapped in such a header, if you write it to flash at
say, 0x10000 then it can either continue to boot the original firmware at
0x20000 or you can TFTP up a RAM image that it will load and boot.
It's mostly the 3.2 version of the realtek bootloader ( most Minitars have
the 1.0 version) with a couple of black holes removed, a boot wait feature
added and TFTP support for "magic" images. The magic images are
img_test.bin ( to load in RAM and jump to) and img_flash.bin (to load, then
write to flash).
You may be able to load this from the existing Minitar web firmware upgrade
page, but I haven't tried that. If you have a serial port mod, then you
know what to do. If not, bring your Minitar along to the next meeting and I
can load it on for you.
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