From: Wolfgang Wegner <wolfgang@leila.ping.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC PATCH] Implementation of non-blocking flash write/erase/status check functions.
Date: Fri, 30 Oct 2009 16:02:52 +0100 [thread overview]
Message-ID: <20091030150251.GM3216@leila.ping.de> (raw)
In-Reply-To: <1256914121-26044-1-git-send-email-w.wegner@astro-kom.de>
Hi list,
sorry, there should have been more description on top, but somehow I
messed up the commit log message and did not realize it until now. :-(
Implementation of non-blocking flash write/erase/status check functions.
Enable with CONFIG_SYS_FLASH_CFI_NONBLOCK
These can be useful to erase flash/write data during a serial data
transfer for software updates.
In reference to the comments of Wolfgang Denk:
The update protocol is surely not perfect (although I probably have
other things in mind I do not like about it than you), but the update
is normally done from the application. When this update fails due to
power loss or whatever reason, the bootloader shall be able to update
the software on its own. The advantage of this rather crude approach
is that it needs less flash space and there is no check necessary to
see which image in flash is the most current one.
Regards,
Wolfgang
next prev parent reply other threads:[~2009-10-30 15:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-27 12:51 [U-Boot] non-blocking flash functions - is this possible/acceptable? Wolfgang Wegner
2009-10-27 13:21 ` Jerry Van Baren
2009-10-27 14:03 ` Jerry Van Baren
2009-10-27 15:22 ` Wolfgang Wegner
2009-10-27 15:57 ` Jerry Van Baren
2009-10-27 15:24 ` Wolfgang Wegner
2009-10-27 18:58 ` Wolfgang Denk
2009-10-30 14:48 ` [U-Boot] [RFC PATCH] Implementation of non-blocking flash write/erase/status check functions Wolfgang Wegner
2009-10-30 15:02 ` Wolfgang Wegner [this message]
2009-10-30 18:22 ` Wolfgang Denk
2009-11-02 16:26 ` [U-Boot] [PATCH] " Wolfgang Wegner
2009-11-02 16:33 ` [U-Boot] [RFC PATCH] Implementation of " Wolfgang Wegner
2009-12-09 16:00 ` [U-Boot] [PATCH RFC v2] " Wolfgang Wegner
2010-01-22 10:03 ` Wolfgang Wegner
2010-01-22 12:03 ` Wolfgang Denk
2010-01-25 8:35 ` Stefan Roese
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