From 20d1ef70e8417da7efc8a032992ee7672a19e296 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Wed, 20 Jan 2010 00:04:17 -0800 Subject: User's guide: mention lpc2000 checksum issue Folk almost certainly want to have OpenOCD compute the checksum when they modify the vector table. However, that almost guarantees that "verify_image" will fail. Signed-off-by: David Brownell --- doc/openocd.texi | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'doc') diff --git a/doc/openocd.texi b/doc/openocd.texi index a0fc0fb6..05b6f4e8 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -4185,13 +4185,19 @@ which must appear in the following order: @itemize @item @var{variant} ... required, may be -@var{lpc2000_v1} (older LPC21xx and LPC22xx) -@var{lpc2000_v2} (LPC213x, LPC214x, LPC210[123], LPC23xx and LPC24xx) -or @var{lpc1700} (LPC175x and LPC176x) +@option{lpc2000_v1} (older LPC21xx and LPC22xx) +@option{lpc2000_v2} (LPC213x, LPC214x, LPC210[123], LPC23xx and LPC24xx) +or @option{lpc1700} (LPC175x and LPC176x) @item @var{clock_kHz} ... the frequency, in kiloHertz, at which the core is running -@item @var{calc_checksum} ... optional (but you probably want to provide this!), +@item @option{calc_checksum} ... optional (but you probably want to provide this!), telling the driver to calculate a valid checksum for the exception vector table. +@quotation Note +If you don't provide @option{calc_checksum} when you're writing the vector +table, the boot ROM will almost certainly ignore your flash image. +However, if you do provide it, +with most tool chains @command{verify_image} will fail. +@end quotation @end itemize LPC flashes don't require the chip and bus width to be specified. -- cgit v1.2.3