[U-Boot] [PATCH 1/2] WIP: Disable SCSI on x86

[Simon Glass]

Hi Bin,

On 8 May 2017 at 01:05, Bin Meng <bmeng.cn at gmail.com> wrote:
> Hi Simon,
>
> On Mon, Apr 10, 2017 at 8:38 AM, Simon Glass <sjg at chromium.org> wrote:
>> This is not to be applied. It is needed to test using CONFIG_DM_MMC on x86
>> since SCSI is broken with this setup.
>>
>> Signed-off-by: Simon Glass <sjg at chromium.org>
>> ---
>
> When you said "SCSI is broken with this setup", did you mean GP#
> exception when boot up with a hard disk like below?

Yes that's right.

>
> SCSI:  Target spinup took 0 ms.
> SATA link 1 timeout.
> AHCI 0001.0300 32 slots 2 ports 3 Gbps 0x3 impl SATA mode
> flags: 64bit ncq stag pm led clo pio slum part sxs
> scanning bus for devices...
> General Protection
> EIP: 0010:[<46174204>] EFLAGS: 00010202
> Original EIP :[<cab17204>]
> EAX: 00000000 EBX: 46174204 ECX: 00000000 EDX: 00000000
> ESI: 7b347f80 EDI: 7b5c3fc8 EBP: 7b3481c4 ESP: 7b347f58
>  DS: 0018 ES: 0018 FS: 0020 GS: 0018 SS: 0018
> CR0: 00000033 CR2: 00000000 CR3: 00000000 CR4: 00000600
> DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> DR6: ffff0ff0 DR7: 00000400
> Stack:
>     0x7b347f98 : 0x20202020
>     0x7b347f94 : 0x20202020
>     0x7b347f90 : 0x00000000
>     0x7b347f8c : 0x0000003f
>     0x7b347f88 : 0x00000000
>     0x7b347f84 : 0x0010c837
>     0x7b347f80 : 0x3fff0c5a
>     0x7b347f7c : 0x7b585f7d
>     0x7b347f78 : 0x7b347f80
>     0x7b347f74 : 0x00000000
>     0x7b347f70 : 0x00000001
>     0x7b347f6c : 0x7b57b01d
>     0x7b347f68 : 0x7b5c3fc8
>     0x7b347f64 : 0x7b347f80
>     0x7b347f60 : 0x00000000
>     0x7b347f5c : 0x00000001
> --->0x7b347f58 : 0x7b57cd1a
>     0x7b347f54 : 0x00010202
>     0x7b347f50 : 0x00000010
>     0x7b347f4c : 0x46174204
> ### ERROR ### Please RESET the board ###
>
>
> [snip]
>
> Regards,
> Bin

- Simon