June 2010 - SerialICE - mail.coreboot.org

[PATCH] Add HP DL165 G6
by Arne Georg Gleditsch July 6, 2010

July 6, 2010

Support for the HP DL165 G6 mainboard. Signed-off-by: Arne Georg Gleditsch <arne.gleditsch(a)numascale.com> -- Arne.

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Readback error
by Myles Watson July 5, 2010

July 5, 2010

All right. With the patches that I sent for Serengeti Cheetah support and Jordan's snserial tool http://www.coreboot.org/index.php?title=AMD_SimNow&redirect=no#Using_the_sn… + a simple patch for making it compile on my compiler (attached)... It works! I can run SimNOW with a SerialICE, snserial to make it go to /dev/pts/13, and qemu with the serialice patches. It looks like I need to update the lua script so that I don't kill the serial port, since this is the last thing I get: MEM: writel fee00380 <= 00000033 * IO: outb 002e <= 87 IO: outb 002e <= 87 IO: outb 002e <= 07 IO: outb 002f <= 02 IO: outb 002e <= 30 IO: outb 002f <= 00 IO: outb 002e <= 60 I thought I'd use gdb to skip over those, but when I use gdb to connect (adding -s -S to the qemu command line), I get a lot of these messages: MEM: readl 000c9900 => ffffffff * Readback error! 38/39 Readback error! 63/34 Any ideas of why connecting gdb would cause readback errors on the port? Thanks, Myles

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Porting to new boards
by Myles Watson July 2, 2010

July 2, 2010

I'd like to have SerialICE working on my Tyan boards, but I don't see any output from the serial port after my porting attempt. I took a step back and tried Qemu and SimNOW. I see the SerialICE prompt, but I don't know how to test that interface. SerialICE v1.5 (Jun 21 2010) > I was expecting to be able to enter some commands at the prompt, to read/write memory locations and registers. I'm attaching the patches I am working with: emulators.diff: Add trivial support for qemu and copy support for SimNOW from Tyan s2912 since they use the same SuperIO chip. pci_read.diff: Add pci_read functions, since my Tyan s2895 Serial init code uses them (copied from Coreboot) tyan.diff: Add code for s2895 (s2892 is just a copy of s2895 right now) debug_romstrap.diff: Make the romstrap end up looking like Coreboot's romstrap. Status: Qemu & SimNOW give me a prompt, but I don't know how to interact with it. Tyan s2895 - No output. Signed-off-by: Myles Watson <mylesgw(a)gmail.com> Thanks, Myles

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Reset troubles with Coreboot image
by Myles Watson June 30, 2010

June 30, 2010

My s2895 doesn't do a soft reset correctly with the coreboot image, but it does with the factory image. Have you seen that problem? It seems strange, because the "Reset triggered" message still shows up, along with "Rebooting the emulated CPU", but then I get Readback errors. I patched SerialICE to redo the handshake on reset, but that doesn't help. I think I'm getting closer, but if someone has already seen something similar or has suggestions... Thanks, Myles

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Qemu in the tree?
by Myles Watson June 23, 2010

June 23, 2010

> > Yes. Something is severely wrong with your SerialICE. Start from scratch > > with a fresh checkout and use the Qemu in the tree instead of the patch. > > > I just wanted to report this worked :-) > I still had to add --extra-ldflags=-lm and --disable-kqemu to build.sh but > at least it is running :-) > I don't know why the > http://download.savannah.gnu.org/releases/qemu/qemu-0.11.0.tar.gz > Is not working though.... What does "use the Qemu in the tree" mean? I'm seeing some strange behavior, and want to try what works :) Thanks, Myles

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