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authorFrancis Rowe <info@gluglug.org.uk>2015-07-18 19:31:16 (EDT)
committer Francis Rowe <info@gluglug.org.uk>2015-09-20 04:06:27 (EDT)
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parent919af0e6b7cbff2171d370a0b830f2b9d740410b (diff)
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New board: ThinkPad R500 (experimental)
The ich9deblob and ich9gen utilities were modified, so that they support reading and/or writing descriptor images where the GbE region is not defined. These utilities were also re-factored and tidied up a bit. A quick was noticed during the course of this work, in that Compenent 1 Density was being set to 8MiB constantly, even on systems with 4MiB flash chips. Component 2 Density was set statically to 2MiB. ich9gen now sets both to 4MiB or 8MiB, depending on whether building the descriptor for a 4MiB or 8MiB ROM image. There are still some ACPI bugs (see docs/hcl/r500.html), which will have to be fixed upstream. TODO: get hw reg dumps from a factory R500, and compare with the X200 or T400 dumps.
Diffstat (limited to 'docs/hcl/gm45_remove_me.html')
-rw-r--r--docs/hcl/gm45_remove_me.html37
1 files changed, 36 insertions, 1 deletions
diff --git a/docs/hcl/gm45_remove_me.html b/docs/hcl/gm45_remove_me.html
index c78dfe1..d3aff4a 100644
--- a/docs/hcl/gm45_remove_me.html
+++ b/docs/hcl/gm45_remove_me.html
@@ -110,6 +110,17 @@
<li><b>ich9fdgbe_4m.bin</b>: this is for GM45 laptops with the 4MB flash chip.</li>
<li><b>ich9fdgbe_8m.bin</b>: this is for GM45 laptops with the 8MB flash chip.</li>
</ul>
+
+ <p>
+ Two other files will also be created, for the ThinkPad R500 which has a different NIC and, therefore,
+ no GbE region (for this laptop, it is not necessary to change the MAC address in the flash chip, because
+ it's burned into the NIC):
+ </p>
+ <ul>
+ <li><b>ich9fdnogbe_4m.bin</b>: this is for ThinkPad R500 laptops with the 4MB flash chip, where no GbE region is to be defined.</li>
+ <li><b>ich9fdnogbe_8m.bin</b>: this is for ThinkPad R500 laptops with the 8MB flash chip, where no GbE region is to be defined
+ - <b>NOTE: No actual R500 laptops with 8MiB are believed to exist. It is believed, that all R500 laptops have 4MiB flash chips</b>.</li>
+ </ul>
<p>
Assuming that your libreboot image is named <b>libreboot.rom</b>, copy
@@ -117,7 +128,18 @@
and then insert the descriptor+gbe file into the ROM image. For 8MiB flash chips:<br/>
$ <b>dd if=ich9fdgbe_8m.bin of=libreboot.rom bs=1 count=12k conv=notrunc</b><br/>
For 4MiB flash chips:<br/>
- $ <b>dd if=ich9fdgbe_4m.bin of=libreboot.rom bs=1 count=12k conv=notrunc</b>
+ $ <b>dd if=ich9fdgbe_4m.bin of=libreboot.rom bs=1 count=12k conv=notrunc</b><br/>
+ </p>
+ <p>
+ <b>For the ThinkPad R500, do this instead:</b><br/>
+ For 8MiB flash chips (<b>highly unlikely on the ThinkPad R500)</b>:<br/>
+ $ <b>dd if=ich9fdnogbe_8m.bin of=libreboot.rom bs=1 count=4k conv=notrunc</b><br/>
+ For 4MiB flash chips (<b>You probably have this)</b>:<br/>
+ $ <b>dd if=ich9fdnogbe_4m.bin of=libreboot.rom bs=1 count=4k conv=notrunc</b><br/>
+ NOTE: This shouldn't be necessary. Libreboot ROM images already contain a descriptor embedded inside
+ the ROM images for GM45, generated by the ich9gen utility. It's only desirable to re-insert your own
+ when changing the MAC address, which is unnecessary (actually impossible) on the R500, because on that laptop,
+ as already stated, the NIC already has the correct MAC address burned in, along with along configuration data.
</p>
<p>
@@ -220,6 +242,11 @@
The first 4KiB contains the descriptor data region for your system, and the next 8KiB contains the gbe region (config data for your
gigabit NIC). These 2 regions could actually be separate files, but they are joined into 1 file in this case.
</p>
+ <p>
+ A 4KiB file named <b>deblobbed_4kdescriptor.bin</b> will alternatively appear, if no GbE region was detected inside the ROM image.
+ This is usually the case, when a discrete NIC is used (eg Broadcom) instead of Intel. Only the Intel NICs need a GbE region in
+ the flash chip.
+ </p>
<p>
Assuming that your libreboot image is named <b>libreboot.rom</b>, copy
@@ -227,6 +254,14 @@
and then run:<br/>
$ <b>dd if=deblobbed_descriptor.bin of=libreboot.rom bs=1 count=12k conv=notrunc</b>
</p>
+ <p>
+ Alternatively, if you got a the <b>deblobbed_4kdescriptor.bin</b> file (no GbE defined),
+ do this:
+ $ <b>dd if=deblobbed_4kdescriptor.bin of=libreboot.rom bs=1 count=4k conv=notrunc</b>
+ </p>
+ <p>
+
+ </p>
<p>
The utility will also generate 4 additional files: