Re: [Qemu-devel] Using virtio-mmio

[Erlon Cruz]

On Wed, Aug 7, 2013 at 10:38 AM, Erlon Cruz <address@hidden> wrote:

On Sat, Aug 3, 2013 at 7:03 AM, Peter Maydell <address@hidden> wrote:

On 2 August 2013 18:48, Erlon Cruz <address@hidden> wrote:
> kernel:  Linux 3.10-rc6 -> vexpress_defconfig

> The kernel boots, but it cant mount the SD:
>
> mmc0: host doesn't support card's voltages
> mmc0: error -22 whilst initialising SD card
> SD: Unknown CMD1

The mainline kernel's vexpress_defconfig is known to
be broken. In particular you need to make sure you
define at least CONFIG_REGULATOR and CONFIG_REGULATOR_VEXPRESS,
otherwise the MMC controller driver thinks it supports no
voltages at all and fails like this.

 

Hmm, adding this option fixed the MMC problem. I mean, I can see the MMC booting vexpress-a15. vexpress-a9 still doesnt shows up. I have tried several kernels/configs combinations.

v3.9 - vexpress_defconfig + VEXPRESS

v3.9 - with configs from linaro sources as in this tutorial (https://wiki.linaro.org/Resources/HowTo/KernelDeploy)

v3.9 - with a config from (3.2.0-1800-linaro-lt-vexpress-a9) that I can sucessfully boot

Can you guys suggest any other config I could try? Or kernel version or repo?

Got it booting with kernel from: git clone git://git.linaro.org/kernel/linux-linaro-tracking.git

Then building linaro default configure

ARCH=arm scripts/kconfig/merge_config.sh \

linaro/configs/linaro-base.conf \

linaro/configs/ubuntu-minimal.conf \

linaro/configs/big-LITTLE-MP.conf \

linaro/configs/vexpress.conf

Thanks

Kind Regards,

Erlon

 

-- PMM