[Qemu-devel] Re: Qemu SH4 status #2

[yoshii . takashi]

Hi,

> I'm still getting segmentation fault at exact same
> location. Have you made additional patches?
Please find attached file "qemu081111.diff".
Basically, this is an aggregate of patches found on qemu-devel ML,
 with some conflicts against current svn source being resolved,
 and some small fix are added, which are scheduled to be posted after
 I finished with my pending patches.

I post this to share information between qemu and linux/sh people,
 and hopefully accelerate debugging with linux people's help.

Another file "linuxconfig_r2d_qemu.diff" is diff for linux kernel
 configuretion. It changes following parameters from r2d+'s defconfig.
- Cache -> off (qemu has no cache)
- commandline change (for debugging)
- 8139too -> 8139cp (qemu's default is c+, still thinking how to switch)
- SH SPI -> off (sci emulation is not mature enough to handle it)

Build procedure is as follows,
Configure kernel:
 make ARCH=sh rts7751r2dplus_defconfig
 patch .config < linuxconfig_r2d_qemu.diff
 (and build)

Configure Qemu:
 ./configure --disable-system --target-list=sh4-softmmu \
  --disable-linux-user --disable-kqemu

Execute:
 sh4-softmmu/qemu-system-sh4 -M r2d --serial vc --serial /dev/tty \
  --kernel zImage --append "console=tty0 root=/dev/sda" \
  -usb --usbdevice keyboard --usbdevice mouse disk.img

I've tested it on qemu svn head this morning.
You will see penguin logo, and fbcon input/output working.
For debugging purpose, console=ttySC0,115200 might help.
/yoshii

qemu081111.diff
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linuxconfig_r2d_qemu.diff
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