From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lothar =?UTF-8?B?V2HDn21hbm4=?= <LW@KARO-electronics.de>
Date: Wed, 30 Aug 2017 08:44:17 +0200
Subject: [U-Boot] ** Can't read Driver Desriptor Block **
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To: u-boot@lists.denx.de

Hi,

On Wed, 30 Aug 2017 14:34:18 +0800 Simon Glass wrote:
> Hi,
>=20
> On 30 August 2017 at 09:54, Bin Meng <bmeng.cn@gmail.com> wrote:
> > Hi Heinrich,
> >
> > On Wed, Aug 30, 2017 at 4:26 AM, Heinrich Schuchardt <xypron.glpk@gmx.d=
e> wrote:
> >> Hello Simon,
> >>
> >> U-Boot HEAD qemu-86_defconfig cannot discover an IDE disk with one FAT
> >> partition in qemu-system-x86_64.
> >>
> >> By bisection I found this patch.
> >>
> >> b7c6baef2891ce8978cbfddb66e944943473ac21
> >> x86: Convert MMC to driver model
> >>
> >> With this patch I get
> >>
> >> IDE:   Bus 0: OK Bus 1: OK
> >>   Device 0: Model: QEMU HARDDISK  Firm: 2.5+ Ser#: QM00001
> >>             Type: Hard Disk
> >>             Supports 48-bit addressing
> >>             Capacity: 128.0 MB =3D 0.1 GB (262144 x 512)
> >> ** Can't read Driver Desriptor Block **
> >>   Device 1: not available
> >>   Device 2: Model: QEMU Firm: 2.5+ Ser#: QEMU DVD-ROM
> >>             Type: Removable CD ROM
> >>             Capacity: not available
> >>   Device 3: not available
> >>
> >> =3D> ide info
> >> =3D>
> >>
> >> Without the patch I get=3D> ide info
> >> Device 0: Model: QEMU HARDDISK  Firm: 2.5+ Ser#: QM00001
> >>             Type: Hard Disk
> >>             Supports 48-bit addressing
> >>             Capacity: 128.0 MB =3D 0.1 GB (262144 x 512)
> >> Device 2: Model: QEMU Firm: 2.5+ Ser#: QEMU DVD-ROM
> >>             Type: Removable CD ROM
> >>             Capacity: not available
> >>
> >> I think we observe two independent errors here:
> >>
> >> - The hard disk Device 0 is not read.
> >> - The ide command stops at the first device that is not available.
> >>
> >> I guess only the first is caused by your patch.
> >
> > Both logs look fine to me. The "Can't read Driver Desriptor Block"
> > comes from part_mac.c. Did you verify the actual IDE read/write fails
> > with current HEAD?
>=20
> We should definitely change that message to debug(). It is very
... and fix the missing 'c' in 'Desriptor'


Lothar Wa=C3=9Fmann