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

[luke.leighton]

good enough, martin - thank you :)

diff --git a/allwinner/a20/boot.mdwn b/allwinner/a20/boot.mdwn
index 541a69b..d3b0c70 100644
--- a/allwinner/a20/boot.mdwn
+++ b/allwinner/a20/boot.mdwn
@@ -1,6 +1,9 @@
 # config files

 <a href="./script.fex">script.fex</a><br />
+
+I had more luck with this fex, http://www.gplsquared.com/eoma_boot/script.fex_2
+
 <a href="./eoma68-a20-3.3-config">eoma68-a20-3.3-config</a> <br />
 <a href="./eoma68-a20-3.4-config">eoma68-a20-3.4-config</a> <br />

On Wed, Oct 30, 2013 at 2:05 PM, luke.leighton <luke.leighton at gmail.com> wrote:
> great, martin - can you add that to the wiki plese?  anyhow you can.  thanks
>
> On Wed, Oct 30, 2013 at 6:35 AM, martin brook
> <martin.brook100 at googlemail.com> wrote:
>> 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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>>
>>
>>
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