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authorMichael Bacarella <michael.bacarella@gmail.com>2018-12-03 13:43:53 -0800
committerPatrick Georgi <pgeorgi@google.com>2018-12-05 14:10:12 +0000
commit8bed5efad7d9444fdf02665eac3ad84efb35d42e (patch)
tree771489874b198b12d0ad744b915f75afb1e0041b /Documentation
parentb02452b490321d27a014c8a3421a474fc6689a92 (diff)
downloadcoreboot-8bed5efad7d9444fdf02665eac3ad84efb35d42e.tar.xz
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>
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diff --git a/Documentation/flash_tutorial/index.md b/Documentation/flash_tutorial/index.md
index eb74ad07c1..43382979d2 100644
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+++ b/Documentation/flash_tutorial/index.md
@@ -63,6 +63,11 @@ possible methods:
**WARNING:** Using the wrong method or accidentally using the wrong pinout might
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
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