Describe how to load the installer over the network via TFTP.

At least on the bbb there is no need to specify the load address,
I'd be interested to hear if this isn't the case for other boards.

1 files changed, 46 insertions, 17 deletions

diff --git a/distrib/notes/armv7/prep b/distrib/notes/armv7/prep
index 44db43dda5a..7dd5a7308e0 100644
--- a/distrib/notes/armv7/prep
+++ b/distrib/notes/armv7/prep
@@ -1,24 +1,53 @@
-dnl	$OpenBSD: prep,v 1.4 2014/05/01 11:48:47 jasper Exp $
+dnl	$OpenBSD: prep,v 1.5 2014/11/14 06:12:36 jsg Exp $
 Please be aware that OpenBSD support for this platform is far from
 complete.
 
-At the moment the only way to boot the OpenBSD install is to copy the
-miniroot for your board "miniroot-{am335x,beagle,imx,panda,sunxi}-{:--:}OSrev.fs"
-image to an sdcard.
+OpenBSD can be installed onto a disk by copying the miniroot for your
+board "miniroot-{am335x,beagle,imx,panda,sunxi}-{:--:}OSrev.fs"
+image to an SD card or by booting the ramdisk kernel over the network
+using a TFTP server.
 
-As a result you need another machine to plug the sdcard in. Any
-machine type will do, as long as it supports sdcard storage devices.
-Under OpenBSD, it will appear as a ``sd'' device, for example sd1.
+Booting from an SD card:
 
-Use the dd(1) utility to copy the miniroot to the hard drive.
-The command would likely be, under OpenBSD:
-	dd if=miniroot-beagle-{:--:}OSrev.fs of=/dev/rsd1c
+  To use the miniroot image you will need another machine to plug the
+  SD card in to. Any machine type will do, as long as it supports SD card
+  storage devices.  Under OpenBSD, it will appear as a ``sd'' device, for
+  example sd1.
+  
+  Use the dd(1) utility to copy the miniroot to the hard drive.
+  The command would likely be, under OpenBSD:
+  	dd if=miniroot-beagle-{:--:}OSrev.fs of=/dev/rsd1c
+  
+  When you have connected the BeagleBoard to you computer, a command such
+  as "cu -l cuaU0 -s 115200" (assuming cuaU0 is your serial port device)
+  should connect you to the board's console.
+  
+  Note: By default the BeagleBone Black will boot from the internal emmc.
+  In order to make it boot from the micro SD card, you will need to hold down
+  the small button located by the SD card slot while powering on the board.
+  Once you have done this the board will boot from the SD card as the default.
 
-When you have connected the BeagleBoard to you computer, a command such
-as "cu -l cuaU0 -s 115200" (assuming cuaU0 is your serial port device)
-should connect you to the board's console.
+Booting over the network:
 
-Note: By default the BeagleBone Black will boot from the internal emmc.
-In order to make it boot from the micro sdcard, you will need to hold down
-the small button located by the sdcard slot while powering on the board.
-Once you have done this the board will boot from the sdcard as the default.
+  To interrupt the U-Boot boot process press a key after the banner is
+  displayed on the serial console.
+
+  Then the U-Boot image of the ramdisk kernel can be loaded via TFTP.
+
+  Configure the local IP address via DHCP:
+
+      U-Boot# setenv autoload no
+      U-Boot# dhcp
+
+  Or with a static address:
+
+      U-Boot# setenv ipaddr 192.168.1.2
+
+  Set the IP address of the TFTP server:
+
+      U-Boot# setenv serverip 192.168.1.1
+
+  To load an OMAP ramdisk image via TFTP:
+
+      U-Boot# tftpboot bsd.rd.OMAP.umg
+      U-Boot# bootm