Re: [U-Boot] uboot information

23 Mar 2017

      Hi,
On 22 March 2017 at 10:35, Sébastien Basset sbasset@aviwest.com wrote:
...
1/ No, As i am stuck on the mmc (pci controller internal soc),
2/ Now i try to boot on usb key, but i don't see controller usb
Sorry, these are two different problems.
It is better to post at the bottom that the top, for mailing lists.
I think PCI XHCI has some problems. I'm not sure of its status.
MMC seems to work well on Minnowboard Max (baytrail) but I am not sure
about braswell. Is it perhaps a slightly different chip?
Regards,
Simon
...
2017-03-22 17:22 GMT+01:00 Simon Glass sjg@chromium.org:
...
Hi,
On 22 March 2017 at 08:20, Sébastien Basset sbasset@aviwest.com wrote:
...
hi,
i see controller:
   src/soc/intel/braswell/chip.c/enable_dev ( Intel Braswell SoC ),

type: 2
       vendor: 0x8086. device: 0x2296
       class: 0x08 Generic system peripheral
       subclass: 0x05 SD Host controller
       prog: 0x01
       revision: 0x35
       src/soc/intel/braswell/southcluster.c/southcluster_enable_dev (
Intel
Braswell SoC )
       PCI: 00:12.0 [8086/2296] ops
       PCI: 00:12.0 [8086/2296] enabled
but i can't test sdcard in coreboot ...
i had intel back on this issue, on braswell 3160 version, it's not
possible
of boot on sdcard :
It can be found on page 31 of the Braswell** Design In for The Internet
of
Things (IoT) document 555139.
it's very strange !!??
else i try to boot on usb:
I added node in dts file :
    usb@14,0 {
        reg = <0x000a0000 0 0 0 0>;
        compatible = "xhci-pci";
    };

is there another step for see controller with usb start command ?
I thought you said it was MMC...do you mean it is a USB controller
with an USB->MMC device?
Regards,
Simon
...
Thank you for your information.
2017-03-22 14:05 GMT+01:00 Simon Glass sjg@chromium.org:
...
Hi,
On 18 March 2017 at 02:25, Sébastien Basset sbasset@aviwest.com
wrote:
...
Hi,
Coreboot load uboot as payload.
Does the MMC work OK in coreboot?
It is possible to load U-Boot from UEFI if that helps?

Simon

...
Le 17 mars 2017 19:14, "Simon Glass" sjg@chromium.org a écrit :
...
+Bin
Hi Sebastian,
On 17 March 2017 at 11:23, Sébastien Basset sbasset@aviwest.com
wrote:
>
> Hello,
>
> Sorry for the inconvenience, i have problem for read  mmc on my
> board
> with braswell cpu, i would like test on other board, i have nuc
> intel
> with
> braswell,is there possible when there is already bios to load
> uboot ?
>
> else has any chance, I use coreboot + uboot, i would like run
> kernel
> on
> sdmmc, but i have an problem for communicate with sdcard. I read
> cid
> &
> reference of card but when try read SCR(version & bus width) of
> card,
> doesn't work . For read scr, it's first Transfer mode in SDMA .i
> had
> no
> error for read data but buffer is empty, why ?I use coreboot +
> uboot,
> i
> would like run kernel on sdmmc, but i have an problem for
> communicate
> with
> sdcard. I read cid & reference of card but when try read
> SCR(version
> & bus
> width) of card, doesn't work . For read scr, it's first Transfer
> mode
> in
> SDMA .i had no error for read data but buffer is empty, why ?
Just to be clear, are you running U-Boot on top of Coreboot?
Regards,
Simon