[Arm-netbook] Double checking script.fex for eoma68-a20

[martin brook]

I had more luck with this .fex
http://www.gplsquared.com/eoma_boot/script.fex_2013_09_17



On Wed, Oct 30, 2013 at 6:00 AM, luke.leighton <luke.leighton at gmail.com>wrote:

> On Wed, Oct 30, 2013 at 2:08 AM, Ryan Mullen <rmmullen at gmail.com> wrote:
> > Hi,
> >
> > I am booting an eoma68-a20 using the script.fex (converted to
> > script.bin with sunxi-tools' fex2bin) found here:
> >
> > http://rhombus-tech.net/allwinner/a20/boot/script.fex
> >
> > I have run the instructions found on that page under the subtitle
> > "setup boot instructions for booting directly off of sd/mmc" and all
> > seems well.
> >
> > However, my kernel (linux-sunxi 3.4 with some custom config options)
> > tells me this when booting:
> >
> > [    1.663649] [mmc-msg] sw_mci_init
> > [    1.667156] [mmc-msg] get mmc1's IO(det) failed
> > [    1.671684] [mmc-msg] Not using mmc1 due to script.bin parse failure
> > [    1.678123] [mmc-msg] MMC host used card: 0x9, boot card: 0x0,
> io_card 8
> > [    1.685471] [mmc-msg] sdc0 set round clock 400000, src 24000000
> > [    1.691708] [mmc-msg] sdc0 set ios: clk 0Hz bm OD pm OFF vdd 3.3V
> > width 1 timing LEGACY(SDR12) dt B
> > [    1.702062] [mmc-msg] sdc0 Probe: base:0xf0034000 irq:64
> > sg_cpu:ffdfb000(4fc00000) ret 0.
> > [    1.710382] [mmc-msg] sdc3 set round clock 400000, src 24000000
> > [    1.716717] [mmc-msg] sdc3 set ios: clk 0Hz bm OD pm OFF vdd 3.3V
> > width 1 timing LEGACY(SDR12) dt B
> > [    1.726839] [mmc-msg] sdc3 Probe: base:0xf0036000 irq:67
> > sg_cpu:ffdfa000(4fc01000) ret 0.
> >
> > After I boot an initrd, there are no /dev/mmcblk0 entries in my dev
> > filesystem. However, I can make it appear if I do the following:
> >
> > echo 1 > /proc/driver/sunxi-mmc.3/insert
> >
> > This causes the card to be registered at /dev/mmcblk0 as expected.
> >
> > Digging deeper, it would seem that the script.fex sets the card-detect
> > mode for mmc0 and mmc1 both to 1, which is CARD_DETECT_BY_GPIO. The
> > failure in the kernel log occurs when the script.bin parser tries to
> > read the "sdc_det" key and doesn't get a valid value describing the
> > GPIO it should be using, I assume. mmc3 doesn't have that problem
> > because script.fex sets the card-detect mode to 4, which is manual
> > mode - this requires me to write a 1 to the control node in the procfs
> > as I experienced.
> >
> > Is the script.fex incomplete?
>
>  almost certainly!
>
> > What's going on here?
>
>  we're reliant on you to help diagnose that!  can you please check the
> GPIO line when the card is inserted, by using the gpio kernel module
> (use 3.4 it's easier) flipping it to input and reading the entry?  it
> could be that the manual-soldering of the mmc card slot was done
> poorly.
>
> l.
>
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