From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Frysinger <vapier@gentoo.org>
Date: Sun, 04 Jul 2010 21:24:43 +0000
Subject: Re: upgrading u-boot from linux for SH7785LCR board
Message-Id: <201007041724.44595.vapier@gentoo.org>
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On Sunday, July 04, 2010 14:11:15 Bill Traynor wrote:
> I've compiled and tested u-boot from git for the 7785lcr board.  I'd
> like to write the u-boot.bin to flash but do not have a JTAG to be able
> to recover if the write fails.
>=20
> Given the MTD layout:
> dev:    size   erasesize  name
> mtd0: 00080000 00040000 "loader"
> mtd1: 00080000 00040000 "bootenv"
> mtd2: 00400000 00040000 "kernel"
> mtd3: 03b00000 00040000 "data"
>=20
> Is it reasonable to do the following:
>=20
> flash_erase /dev/mtd[0]
> dd if=3D/tmp/u-boot.bin of=3D/dev/mtd0 bs=3D128k conv=3Dsync

why dont you just use the mtdblock interface ?  it will take care of all th=
e=20
weird flash issues like erasing/etc...

all i do is:
cat u-boot.bin > /dev/mtdblock0
=2Dmike

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