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Re: [Qemu-devel] Linux kernel configurations for various Microblaze syst
From: |
Guenter Roeck |
Subject: |
Re: [Qemu-devel] Linux kernel configurations for various Microblaze systems |
Date: |
Wed, 27 Jun 2018 21:41:07 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 |
On 06/27/2018 09:12 PM, Edgar E. Iglesias wrote:
On Wed, Jun 27, 2018 at 05:34:15PM -0700, Guenter Roeck wrote:
Hi Edgar,
On 06/27/2018 03:47 PM, Edgar E. Iglesias wrote:
Hi Guenter,
Re: ml605
The thing to watch out for with kernel configs for microblaze systems is the
physmem address setting. Unfortunately the kernel does not auto-detect this.
I'm attaching a kernelconfig for the ml605 that works for me and a qemu
commandline.
qemu-system-microblazeel -M petalogix-ml605 -m 256 -serial mon:stdio -dtb
petalogix-ml605.dtb -kernel arch/microblaze/boot/linux.bin -append
rdinit=/bin/sh
Can you also send me the dtb file or even better its source ? I don't think
the one in qemu is correct. It lists the serial port at 0x83e00000, but qemu
instantiates it at 0x83e01000.
I used the one from QEMU. IIRC, there's some offsetting going on there
that differs between the Xilinx version and the PC version of these
UARTs...
Yes, I noticed after I sent the previous e-mail.
Can you try again and see how it goes?
If it doesn't work, I can share my kernel Image and we can compare from there.
I tried lots of things, nothing worked. Until I got your e-mail, tried again,
and suddenly it works just great. Go figure. Turns out I had used a big endian
toolchain to build a little endian target. Shameface.
I do get this odd gcc warning:
cc1: warning: -mxl-multiply-high can be used only with -mcpu=v6.00.a or greater
Actual parameters are "-mcpu=v10.0 -mxl-multiply-high", so that doesn't really
make
sense to me. I tried various toolchains, all with the same result. Any idea what
that is about ?
Thanks,
Guenter