From d66e242213320a4fed9960eee0ecc870a9e4c616 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 4 Oct 2016 21:13:06 +0200 Subject: ARM: mvebu: document some general mvebu stuff and the rn2120 board MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- Documentation/boards/mvebu/Netgear-ReadyNAS-2120.rst | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/boards/mvebu/Netgear-ReadyNAS-2120.rst (limited to 'Documentation/boards/mvebu') diff --git a/Documentation/boards/mvebu/Netgear-ReadyNAS-2120.rst b/Documentation/boards/mvebu/Netgear-ReadyNAS-2120.rst new file mode 100644 index 0000000000..5bee03af9d --- /dev/null +++ b/Documentation/boards/mvebu/Netgear-ReadyNAS-2120.rst @@ -0,0 +1,19 @@ +Netgear ReadyNAS 2120 +===================== + +This is a rack mountable 4 bay NAS using an Armada XP dual-core processor. + +UART booting +------------ + +The first UART hides behind a sticker on 4 pins. + +The machine seems to do two resets at power on which makes UART booting hard. A +trick to work around this is:: + + scripts/kwboot -d /dev/ttyUSB0; kwboot -b images/barebox-netgear-rn2120.img -t /dev/ttyUSB0 + +This way the first window in which the CPU accepts the magic string is taken by +the first invokation which blocks until the second reset happens. The second +window is then hit with the image to boot. This is not 100% reliable but works +most of the time. -- cgit v1.2.3