Hi John,
Today I was trying to see if I could get the ethernet driver to work with Panda, so we could try TFTP support.
Most of the patches are posted at the u-boot m-l already, that consist of the smsc95xx driver and EHCI support for Panda. With all these patches, and using the x-loader provided by omapzoom, I can make the ethernet device to work just fine, and also able to use TFTP.
You can find my WIP tree at https://gitorious.org/ubuntu-experimental/linaro-u-boot/commits/u-boot-maste...
Remaining issues: * Doesn't work with the upstream version of X-Loader (probably missing some EHCI related initialization); * The SMSC driver seems to be quite unstable, as if you try to start and stop the USB it'll hang at the next time you try to start it again; * The EHCI driver duplicate a lot of code from the OMAP 3 driver, we should to reduce most of it; * Doesn't work without setting a valid mac address; * Default mac address is still 0, and we could use the same logic at the kernel to calculate the unique mac per board (using omap die ie);
Would also be good to test with SPL, but don't know yet how good is the current support for it.
Binaries for those who want to test at their pandas: http://people.canonical.com/~rsalveti/tftp-u-boot/
To test just hit any key to get at the u-boot shell and call 'usb start; dhcp', and you should get something like:
Panda # usb start (Re)start USB... USB: Register 1313 NbrPorts 3 USB EHCI 1.00 scanning bus for devices... The request port(2) is not configured EHCI timed out on TD - token=0x80008c80 The request port(2) is not configured 4 USB Device(s) found scanning bus for storage devices... 0 Storage Device(s) found scanning bus for ethernet devices... 1 Ethernet Device(s) found Panda # dhcp Waiting for Ethernet connection... done. BOOTP broadcast 1 *** Unhandled DHCP Option in OFFER/ACK: 28 *** Unhandled DHCP Option in OFFER/ACK: 28 DHCP client bound to address 10.42.43.32 Using sms0 device TFTP from server 10.42.43.1; our IP address is 10.42.43.32 Filename 'uImage'. Load address: 0x82000000 Loading: *
Cheers,
On Fri, 20 May 2011, Ricardo Salveti wrote:
Hi John,
Today I was trying to see if I could get the ethernet driver to work with Panda, so we could try TFTP support.
Most of the patches are posted at the u-boot m-l already, that consist of the smsc95xx driver and EHCI support for Panda. With all these patches, and using the x-loader provided by omapzoom, I can make the ethernet device to work just fine, and also able to use TFTP.
You can find my WIP tree at https://gitorious.org/ubuntu-experimental/linaro-u-boot/commits/u-boot-maste...
Remaining issues:
- Doesn't work with the upstream version of X-Loader (probably
missing some EHCI related initialization);
- The SMSC driver seems to be quite unstable, as if you try to start
and stop the USB it'll hang at the next time you try to start it again;
- The EHCI driver duplicate a lot of code from the OMAP 3 driver, we
should to reduce most of it;
- Doesn't work without setting a valid mac address;
- Default mac address is still 0, and we could use the same logic at
the kernel to calculate the unique mac per board (using omap die ie);
Yes, pretty please, make sure that the default MAC address ends up being the same as what is generated in the kernel. Of course the env variable should still be able to override it.
Nicolas
-
Nicolas Pitre -
Ricardo Salveti