More details about the dreaded netaddr environment variable for network

boot, and about the console madness on machines with an external L1 serial
port.

1 files changed, 28 insertions, 5 deletions

diff --git a/distrib/notes/sgi/prep b/distrib/notes/sgi/prep
index 664ce24fd18..99790a534e1 100644
--- a/distrib/notes/sgi/prep
+++ b/distrib/notes/sgi/prep
@@ -1,4 +1,4 @@
-dnl	$OpenBSD: prep,v 1.14 2009/08/02 17:08:13 jasper Exp $
+dnl	$OpenBSD: prep,v 1.15 2009/10/10 19:20:29 miod Exp $
 Before you install your system, you should identify your system family and
 familiarize yourself with the ARCBios setup and how to run programs from
 the Command monitor prompt.
@@ -22,9 +22,9 @@ Identifying your system:
 
     IP35 family:
 	Origin 300, Origin 3000, Onyx 300
-dnl	Origin 350, Onyx 350, Onyx 4
+	Origin 350, Onyx 350, Onyx 4
 	Fuel
-dnl	Tezro
+	Tezro
 
     You should use the kernels (bsd and bsd.rd) with the IP suffix
     matching your family number, except for IP35 systems which use
@@ -53,12 +53,12 @@ Switching from serial to graphics console and vice versa:
     and change the ``console'' environment variable, and power-cycle
     the machine.
 
-    > setenv console d
+    >> setenv console d
 
     will select 9600 8N1, no flow control, serial console on the first
     serial port (labeled ``(1)''), while
 
-    > setenv console g
+    >> setenv console g
 
     will select the graphics console.
 
@@ -66,6 +66,29 @@ Switching from serial to graphics console and vice versa:
     under OpenBSD at the moment. On all other non-headless systems,
     you need to change the console to serial.
 
+Switching from L1 console to serial console and vice versa:
+
+    IP35 systems without a graphics console can have the PROM console output
+    either on the L1 console serial port, or the regular serial port. 
+
+    The `console' command at the PROM prompt, can select between them:
+    >> console sc
+    will switch to the L1 serial port, while
+    >> console ioc3
+    or
+    >> console ioc4
+    will select the regular serial port, depending on the I/O board type.
+
+    On Fuel systems, there is no external L1 serial port, so `console sc'
+    should never be used on these machines.
+
+    Origin 300 and 3000 families can switch between `sc' and `ioc3', while
+    Origin 350 and 3500 families can switch between `sc' and `ioc4'.
+
+    The OpenBSD kernel only supports serial console on the regular serial
+    ports; if your PROM console is on the L1 port, the kernel console will
+    nevertheless pick the first IOC3 or IOC4 serial port.
+
 Setting the environment:
 
     When setting up the system to boot from disk, the ``OSLoader''