From: Daniel Ng <daniel_ng11@lycos•com>
To: linuxppc-embedded@ozlabs•org
Subject: Device Tree setup for 8272-based board
Date: Fri, 19 Dec 2008 06:31:41 +0000 (UTC) [thread overview]
Message-ID: <loom.20081219T062005-806@post.gmane.org> (raw)
Hi,
We are migrating our PowerPC 8272-based board from 2.6.14 to 2.6.27.
One of the big changes is the need for a Device Tree for bootup.
So far, my bootup looks like the below (using u-boot).
I am just using arch/powerpc/boot/cuboot-824x.c
and /arch/powerpc/boot/dts/mpc8272ads.dts for now. Therefore, all the settings
as printed below are wrong ie. Memory, ENET0 mac, CPU clock freq, etc.
When I change the settings in mpc8272ads.dts and do a fresh recompile, the
settings do not change. However, if I use another cuboot*.c file, I get a
different set of printed settings eg. 2 ethernet ports instead of 1. This is
fine, but I don't see where in the cuboot*.c file these settings are
specified. Can someone suggest where these might be?
Cheers,
Daniel
## Booting image at 00200000 ...
Image Name: Linux-2.6.27-mybuild
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 1477233 Bytes = 1.4 MB
Load Address: 00400000
Entry Point: 00400594
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Memory <- <0x0 0x4000000> (64MB)
ENET0: local-mac-address <- c0:a8:01:4b:7e:13
CPU clock-frequency <- 0xa175c100 (2709MHz)
CPU timebase-frequency <- 0x4ead9a0 (83MHz)
CPU bus-frequency <- 0x13ab6680 (330MHz)
zImage starting: loaded at 0x00400000 (sp: 0x03f7c9c8)
Allocating 0x316e8c bytes for kernel ...
gunzipping (0x00000000 <- 0x0040c000:0x0071367c)...done 0x2f41a0 bytes
Linux/PowerPC load:
Finalizing device tree... flat tree at 0x40acd8
(there is no more output after this)
next reply other threads:[~2008-12-19 6:31 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-19 6:31 Daniel Ng [this message]
2008-12-19 16:37 ` Device Tree setup for 8272-based board mingqian
2008-12-19 20:03 ` Scott Wood
2008-12-22 6:57 ` Daniel Ng
2008-12-22 17:37 ` Scott Wood
2008-12-23 0:52 ` Daniel Ng
2008-12-23 16:09 ` Scott Wood
2008-12-23 23:21 ` Daniel Ng
-- strict thread matches above, loose matches on Subject: below --
2009-01-16 1:22 Daniel Ng
2009-01-16 3:40 ` Daniel Ng
2009-01-16 18:14 ` Scott Wood
2009-01-19 1:58 ` Daniel Ng
2009-01-19 17:29 ` Scott Wood
2009-01-20 7:23 ` Daniel Ng
2009-01-20 16:41 ` Scott Wood
2009-01-21 7:37 ` Daniel Ng
2009-01-21 17:52 ` Scott Wood
2009-01-22 7:47 ` Daniel Ng
2009-01-22 17:05 ` Scott Wood
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