[coreboot] Asus AM1I-A

Tue Feb 13 06:57:47 CET 2018

Hi,

taking a look at the diffs, I can't see any major difference.
CONFIG_USE_BLOBS is y by default so setting it to y is not really useful.
The only notable difference is that you used COM1 for console output
instead of COM2 (which is the port soldered on-board). However, this does
not seem to explain why you got "slow" output on your console. If the COM
port number and the base address is specified incorrectly then you'd see no
output, at all, so I'm unsure what the real issue was in your case and how
you managed to fix it.

As for the PCI IDs of the VGA adapter, it can be different depending on
what APU is installed. My installation uses the one that is set in Kconfig
by default.

The requirement to place the DIMM to slot DIMM_A2 (the slot closest to the
edge of the board) when only one module is present is noted in the vendor
manual on page 1-7.

About changing the defaults in the board's Kconfig, I'm not sure what you
mean, could you please clarify? I think changing the default VGA PCI ID
does not make sense as the VGA controller is integrated to the APU so each
APU model and revision might use different PIDs and I believe there's no
point preferring one ID over the others. The one that I have included is
for reference only which might need to be changed to match the APU
installed (my installation uses a Sempron 3850 APU).

Anyway, I'm happy to see that you could finally make coreboot work on your
board, it's good to known I'm not the only user of my port! :)

Regards,
Gergely

On 11 February 2018 at 12:26, Elisenda Cuadros <lists at e4l.es> wrote:

> Hi Gergely,
>
> Thank you for your config. Now I have coreboot + SeaBIOS perfectly working.
>
> Console speed is now "normal" :-)
>
> These are the changes between the two configs:
>
> -------------
>
> diff config_original.txt config_Gergely.txt
> 23c23
> < # CONFIG_USE_BLOBS is not set
> ---
> > CONFIG_USE_BLOBS=y
> 101c101
> < CONFIG_UART_FOR_CONSOLE=0
> ---
> > CONFIG_UART_FOR_CONSOLE=1
> 150c150
> < CONFIG_POST_DEVICE=y
> ---
> > # CONFIG_POST_DEVICE is not set
> 210c210
> < CONFIG_TTYS0_BASE=0x3f8
> ---
> > CONFIG_TTYS0_BASE=0x2f8
> 428,429d427
> < # CONFIG_PCI_OPTION_ROM_RUN_REALMODE is not set
> < # CONFIG_PCI_OPTION_ROM_RUN_YABEL is not set
> 431d428
> < # CONFIG_VGA_TEXT_FRAMEBUFFER is not set
> 556c553
> < # Serial port base address = 0x3f8
> ---
> > # Serial port base address = 0x2f8
> 581,583d577
> < CONFIG_POST_DEVICE_NONE=y
> < # CONFIG_POST_DEVICE_LPC is not set
> < # CONFIG_POST_DEVICE_PCI_PCIE is not set
>
> --------------
>
> I made some tweaks to the configuration, added VGA output before payload,
> a nice bootsplash, etc..
>
> Other considerations:
>
> VGA Device PCI IDs are 1002,9830 (The default 1002,9836 does not get
> output).
>
> Memory has to be located firstly on second slot (yellow DIMM_A2). If not
> you get AGESA_FATAL_ERROR. I only have one module.
>
> Please, find attached a working config.txt and console.log. Coreboot
> revision is 4.7-294-g2db6fbc47b.
>
> If you verify these changes are working for you is it possible to change
> the defaults in Kconfig?
>
> Thank you very much.
>
> Best regards,
>
> -- Eli
>
>
>
> On 11/02/18 00:07, Gergely Kiss wrote:
>
> Strange, the log you shared looked less verbose to me than expected but
> seems like I was wrong. Anyway, you might find an example on a full debug
> log here [1].
>
> I have a small build script I use to build coreboot for my board, please
> find it attached.
>
> The version currently running on my box is 4.6-2554-ga1b4c94.
>
> [1] https://www.coreboot.org/Board:asus/am1i-a#Bootlog
>
> On 10 February 2018 at 23:18, Elisenda Cuadros <lists at e4l.es> wrote:
>
>> Thank you for your kind reply Gergely.
>>
>> I think the cable is not the problem, I have been using it for years and
>> it's intact.
>>
>> I am using a usb dongle but not a cheap one. Tomorrow I will try with
>> another cable and a real COM port. Just to be 100% sure.
>>
>> Console is fast at the very first time (just the "normal") but after two
>> seconds it becomes extremely slow.
>>
>> Please, can you say me which is the git revision you are using?
>>
>> The console log I attached is from a SPEW debug level, not corresponding
>> with the config.. I tried several configs today :-) .
>>
>> Is it possible to share your config with me?
>>
>> Best regards,
>>
>> Eli
>>
>> On 10/02/18 21:44, Gergely Kiss wrote:
>>
>> Hi Eli,
>>
>> I've been using Coreboot on my board for several weeks, it is serving as
>> an HTPC running 24/7 and it's working perfectly stable which suggests the
>> firmware should be free of bugs. It is likely that you are facing some
>> configuration or hardware issue here.
>>
>> I didn't see any issues with the serial output while working with the
>> board once the SuperIO chip started to work. Make sure the cable you use is
>> intact and try to attach it to another machine. At the time I was working
>> with my board, I used a Dell Port Replicator with a native COM port so I
>> could use a standard null-modem cable and it was working flawlessly. In
>> case you use a USB serial adapter, try replacing it or attach the serial
>> cable directly to a COM port if you have one available.
>>
>> Also, please enable debug_level=Spew as it seems the console log you
>> attached comes from a less verbose setting and therefore it's not as useful
>> as it should be.
>>
>> Note that the VBIOS image is executed by SeaBIOS which means you won't
>> see anything on your display until the payload is executed.
>>
>> If all else fails, you can still attach a POST debug module to the LPC
>> header of the board [1] which can help a lot to find out where the boot
>> process hangs.
>>
>> Feel free to contact me if you need some more help or information, I'm
>> happy to assist!
>>
>> Regards,
>> Gergely
>>
>> [1] https://www.youtube.com/watch?v=aGGqsWx3-1c
>>
>> On 10 February 2018 at 18:17, Elisenda Cuadros <lists at e4l.es> wrote:
>>
>>> Hello,
>>>
>>> I'm trying to use Coreboot in an Asus AM1I-A board recently ported by
>>> Gergely Kiss (thank you!).
>>>
>>> I am using the default config settings and added vga rom extracted with
>>> UEFITool from the vendor bios.
>>>
>>> After flashing and booting I get no output from vga.
>>>
>>> Serial console is extremely slow too (30 minutes to write the log)
>>>
>>> I attach the coreboot console log, config and cbfs.txt.
>>>
>>> Any hints?
>>>
>>> Thanks in advance.
>>>
>>> Best regards,
>>>
>>> -- Eli
>>>
>>>
>>>
>>
>>
>
>
>
>
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