linux-kernel - Re: HTC Dream aka. t-mobile g1 support

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Message-ID: <4A32F5C9.2040206@am.sony.com>
Date:	Fri, 12 Jun 2009 17:41:45 -0700
From:	Tim Bird <tim.bird@...sony.com>
To:	Brian Swetland <swetland@...gle.com>
CC:	Pavel Machek <pavel@....cz>,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.arm.linux.org.uk>,
	<ibm@...roid.com>, <san@...roid.com>, <rlove@...gle.com>
Subject: Re: HTC Dream aka. t-mobile g1 support

Brian Swetland wrote:
> On Thu, Jun 11, 2009 at 4:09 AM, Pavel Machek<pavel@....cz> wrote:
>> Anyway, now I have a tree, and yes it compiles. (After some
>> "interesting" questions; perhaps defconfig should be updated?)
>>
>> Unfortunately, upon fastboot boot uImage, it hangs with black screen
>> and backlight on.
> 
> You'll need to fastboot boot arch/arm/boot/zImage ramdisk.img
> 
> Extracting the ramdisk.img from the boot.img in the boot partition on
> an existing device is a pain.  If you happen to have a cupcake
> userspace built from source that ramdisk.img should be suitable.  If
> not, I'll try to dig up a suitable ramdisk image tomorrow -- it's just
> init, init.rc, and adb, but it is necessary to boot.

I found the tools located here:
"HOWTO: Unpack, Edit, and Repack Boot Images"
http://forum.xda-developers.com/showthread.php?t=443994

to be very helpful.

I wrote a small wrapper script to extract
the recovery image, substitute a new kernel, and re-install it
on the ADP1, which I use for my own kernel testing. I can post
it somewhere if people are interested.

I use the recovery partition instead of the boot partition.
I leave the boot partition alone since this thing is also my
phone and when I'm done debugging I want to get back to
the original code and config easily.
 -- Tim

=============================
Tim Bird
Architecture Group Chair, CE Linux Forum
Senior Staff Engineer, Sony Corporation of America
=============================

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