Re: [E3-hacking] Just got an e3 - where do I start
On Wednesday 17 October 2012 at 17:21, Jake wrote:
The 5.1 PBL requires a handshake first ( as previously discussed on list ) of the aforementioned key as a blob. Once it gets that, the old flashing commands are all available.. I think I actually posted the sig of the key on list ?
On Wednesday 17 October 2012 at 17:34, Jake wrote:
Yup, I did.. We even know the plaintext length: 392 bytes ..
For anyone searching for a link to this, I assume it's http://www.earth.li/pipermail/e3-hacking/2008-January/000795.html Regards, Antony. -- In the Beginning there was nothing, which exploded. - Terry Pratchett
To bring this discussion back round to the original topic, now that I have an e3 setup how do I go about getting it to boot? I've got a serial going with an inverter, I know I can use pbltool to flash an image to the NAND, and I'm happy building a kernel for it. So as far as I can tell my next steps are to use the resources at http://the.earth.li/pub/e3/ to flash the kernel, a bootloader, and some fs. Still, the way forward seems a little hazy, at least without reading the last 6 years worth of mailing list archives. As far as I can tell, there are a couple of ways to boot: - use pbltool with a script to flash uboot, kernel, initrd. Not sure if script needs to be modified for kernel/initrd size or if the kernel will then just happily boot after every reset unattended. - use pbltool to flash !LDR, uboot, kernel and initrd. Not sure if I need to first boot a (possibly very old) system to flash !LDR or if it can be done using pbltool - flash !LDR, kernel and initrd, without uboot. In any case, I am still unsure about a few things - can I use pbltool to do the flashing in any of those scenarios, or do I need something else? - are the versions of pbltool and !LDR at the link I posted the latest? - will I need to modify the kernel to have the correct NAND partition offsets for my kernel etc? Is there a specific address PBL looks to boot from? - how do you set kernel parameters etc? Does uboot give its normal boot prompt to framebuffer/serial? Sorry for all the newbie questions! Best, Ed
I've been reading the mailing list a lot today and think I can proceed now. Will give it a go next week and post if I have any more questions, or get stuck! Cheers, Ed On Fri, Oct 26, 2012 at 12:22 AM, Edward Robbins <edd.robbins@googlemail.com> wrote:
To bring this discussion back round to the original topic, now that I have an e3 setup how do I go about getting it to boot?
I've got a serial going with an inverter, I know I can use pbltool to flash an image to the NAND, and I'm happy building a kernel for it. So as far as I can tell my next steps are to use the resources at http://the.earth.li/pub/e3/ to flash the kernel, a bootloader, and some fs.
Still, the way forward seems a little hazy, at least without reading the last 6 years worth of mailing list archives. As far as I can tell, there are a couple of ways to boot:
- use pbltool with a script to flash uboot, kernel, initrd. Not sure if script needs to be modified for kernel/initrd size or if the kernel will then just happily boot after every reset unattended. - use pbltool to flash !LDR, uboot, kernel and initrd. Not sure if I need to first boot a (possibly very old) system to flash !LDR or if it can be done using pbltool - flash !LDR, kernel and initrd, without uboot.
In any case, I am still unsure about a few things
- can I use pbltool to do the flashing in any of those scenarios, or do I need something else? - are the versions of pbltool and !LDR at the link I posted the latest? - will I need to modify the kernel to have the correct NAND partition offsets for my kernel etc? Is there a specific address PBL looks to boot from? - how do you set kernel parameters etc? Does uboot give its normal boot prompt to framebuffer/serial?
Sorry for all the newbie questions! Best, Ed
participants (2)
-
Antony Stone -
Edward Robbins