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Documentation/flash_tutorial/index.md: warn about dots painted on ICs 

I fried my mainboard because I tried to orient my chip by lining a blue dot on
the corner of my chip with a dot depicted on the chip datasheet.  They
apparently have nothing to do with each other, and this is normal.  Add
warning about this to the docs to hopefully spare others from a similar fate.

Signed-off-by: Michael Bacarella <michael.bacarella@gmail.com>
Change-Id: Ib634589aaa11f75bde2ef2e13d2cacc4cae19a3f
Signed-off-by: Michael Bacarella <michael.bacarella@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30028
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This commit is contained in:
Michael Bacarella 2018-12-03 13:43:53 -08:00 committed by Patrick Georgi
parent b02452b490
commit 8bed5efad7
1 changed files with 5 additions and 0 deletions
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Documentation/flash_tutorial/index.md
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@ -63,6 +63,11 @@ possible methods:
**WARNING:** Using the wrong method or accidentally using the wrong pinout might **WARNING:** Using the wrong method or accidentally using the wrong pinout might
permanently damage your hardware! permanently damage your hardware!
**WARNING:** Do not rely on dots *painted* on flash ICs to orient the pins!
Any dots painted on flash ICs may only indicate if they've been tested. Dots
that appear in datasheets to indicate pin 1 correspond to some kind of physical
marker, such as a drilled hole, or one side being more flat than the other.
## Using a layout file ## Using a layout file
On platforms where the flash IC is shared with other components you might want On platforms where the flash IC is shared with other components you might want
to write only a part of the flash IC. On Intel for example there are IFD, ME and to write only a part of the flash IC. On Intel for example there are IFD, ME and