Prompted by Brian's post here are some notes on
doing network installs via TFTP.
At some point I was explicitly using load addresses
like the ramdisks do but that doesn't seem to be required?
ie:
setenv autoload no
dhcp
setenv serverip 192.168.1.1
tftpboot 0x82800000 bsd.rd.OMAP.umg
bootm 0x82800000
For a root on NFS setup I use:
setenv bootargs "cpsw0:/bsd"
Index: prep
===================================================================
RCS file: /cvs/src/distrib/notes/armv7/prep,v
retrieving revision 1.4
diff -u -p -r1.4 prep
--- prep 1 May 2014 11:48:47 -0000 1.4
+++ prep 10 Nov 2014 07:27:06 -0000
@@ -2,23 +2,52 @@ dnl $OpenBSD: prep,v 1.4 2014/05/01 11:4
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.
-
-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.
-
-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 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.
+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.
+
+Booting from an SD card:
+
+ 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.
+
+Booting over the network:
+
+ 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
