From 8df313c4d6607181576471e08d7e909c9c0f33e9 Mon Sep 17 00:00:00 2001
From: Francis Rowe <info@gluglug.org.uk>
Date: Mon, 11 Aug 2014 09:00:00 -0400
Subject: Libreboot release 6 beta 5.

- build: added 'luks', 'lvm', 'cmosdump' and 'cmostest' to the list of
  modules for grub.elf
- Documentation: added pics showing T60 unbricking (still need to
  write a tutorial)
- build: include cmos.layout
  (coreboot/src/mainboard/manufacturer/model/cmos.layout) files in
  libreboot_bin
- Documentation: added ../docs/howtos/x60tablet_unbrick.html
- Documentation: added ../docs/howtos/t60_unbrick.html
- Documentation: added ../docs/howtos/t60_lcd_15.html
- Documentation: added ../docs/howtos/t60_security.html
- Documentation: added ../docs/howtos/t60_heatsink.html
- Documentation: Renamed RELEASE.html to release.html
- Documentation: removed pcmcia reference in x60_security.html (it's
  cardbus)
- Documentation: added preliminary information about randomized seal
  (for physical intrusion detection) in x60_security.html and
  t60_security.html
- Documentation: added preliminary information about
  preventing/mitigating cold-boot attack in x60_security.html and
  t60_security.html
- Documentation: added info to ../docs/index.html#macbook21 warning
  about issues with macbook21
- Documentation: X60/T60: added information about checking custom
  ROM's using dd to see whether or not the top 64K region is
  duplicated below top or not. Advise caution about this in the
  tutorial that deals with flashing on top of Lenovo BIOS, citing the
  correct dd commands necessary if it is confirmed that the ROM has
  not been applied with dd yet. (in the case that the user compiled
  their own ROM's from libreboot, without using the build scripts, or
  if they forgot to use dd, etc).
- Split resources/libreboot/patch/gitdiff into separate patch files
  (getcb script updated to accomodate this change).
- Re-added .git files to bucts
- Fixed the oversight where macbook21_firstflash wasn't included in
  binary archives
---
(limited to 'docs/future/index.html')

diff --git a/docs/future/index.html b/docs/future/index.html
index c525439..3eee4f7 100644
--- a/docs/future/index.html
+++ b/docs/future/index.html
@@ -38,6 +38,7 @@
 		<li><a href="#todo">TODO list</a></li>
 		<li><a href="#standard_test">Standard test</a></li>
 		<li><a href="#t60_cpu_microcode">T60 cpu microcode</a></li>
+		<li><a href="#fastboot">Fast boot</a></li>
 		<li><a href="#lcd_i945_incompatibility">LCD panels on i945 - fix incompatible panels</a></li>
 		<li><a href="#blind_x60">Blind X60 - kernel git bisect</a></li>
 		<li><a href="#x60_native_notes">X60 native graphics initialization (backlight controls)</a></li>
@@ -54,17 +55,6 @@
 
 	<h1 id="todo">TODO (bold means high priority)</h1>
 	<ul>
-		<li><b><a href="#blind_x60">#blind_x60</a>: kernel git bisect (find which commit broke graphics when native graphics or vbios is not in use)</b></li>
-		<li><b>test the latest version of <a href="http://review.coreboot.org/#/c/5927">http://review.coreboot.org/#/c/5927</a> for Paul Menzel</b></li>
-		<li>
-			<b>test the latest versions of 5320/5345 on X60/T60</b>
-			<ul>
-				<li><b><s>Find how to implement the fix from <a href="http://review.coreboot.org/#/c/5927">5927/3</a></s> (see <a href="#5320_kernel312fix">#5320_kernel312fix</a>) and push with 5320 as dependency</b></li>
-				<li><b>Find how to implement the fix from <a href="http://review.coreboot.org/#/c/5927">5927</a> (latest version after patch set 3) and push with 5320 as dependency</b></li>
-				<li><b>Implement the X60 backlight support (<a href="#x60_native_notes">#x60_native_notes</a>) and push with 5320 as dependency</b></li>
-				<li><b>Implement the T60 backlight support (<a href="#t60_native_notes">#t60_native_notes</a>) and push with 5345 as dependency</b></li>
-			</ul>
-		</li>
 		<li>
 			<b><a href="#intelvbttool_results">#intelvbttool_results</a>: Finish getting runningvga.bin dumps and intelvbttool dumps for all known targets on X60 and T60.</b>
 			<ul>
@@ -74,23 +64,9 @@
 				<li>When VBT is implemented/tested, also test SeaVGABIOS (part of SeaBIOS)</li>
 			</ul>
 		</li>
-		<li>
-			<b>Run oprom trace (coreboot + oprom + grub) on <a href="http://review.coreboot.org/#/c/5345">http://review.coreboot.org/#/c/5345</a> for phcoder.</b>
-			(see <a href="#t60_native_notes">#t60_native_notes</a>)
-		</li>
 		<li>test that patch (DYNAMIC_CBMEM, <a href="http://review.coreboot.org/#/c/6036">http://review.coreboot.org/#/c/6036</a>) on X60 and T60 for kmalkki</li>
-		<li>X60 Tablet digitizer support (<a href="http://review.coreboot.org/#/c/5243/">http://review.coreboot.org/#/c/5243/</a>, also see 5242)</li>
-		<li>
 		<li>Further study how backlight controls work</li>
-		<li>
-			<b>After all (or a satisfactory amount) of the above is done, finish deblobbing latest coreboot revisions.</b>
-			<ul>
-				<li><b>Totally re-tool linux-libre deblob scripts to automatically deblob other revisions of coreboot aswell</b></li>
-				<li><b>Ports for T60 and F2A85M</b></li>
-			</ul>
-		</li>
-		<li><b>Write information about software/hardware modifications (security)</b></li>
-		<li>funfunctor wants me to try building libreboot/coreboot on X60 with clang/llvm because he says there are some issues where boards fail when built with this: fchmmr: well you will need to compile the latest clang, here are some instructions: https://gist.github.com/victoredwardocallaghan/38689e88dd7b9a439468 and also: funfunctor: fchmmr: you will need the latest coreboot code and http://review.coreboot.org/#/c/5814/ to get clang to build whatever board. also! <br/><br/>
+		<li>funfunctor (from coreboot IRC) wants me to try building libreboot/coreboot on X60 with clang/llvm because he says there are some issues where boards fail when built with this: fchmmr: well you will need to compile the latest clang, here are some instructions: https://gist.github.com/victoredwardocallaghan/38689e88dd7b9a439468 and also: funfunctor: fchmmr: you will need the latest coreboot code and http://review.coreboot.org/#/c/5814/ to get clang to build whatever board. also! <br/><br/>
 
 		fchmmr: see this topic http://review.coreboot.org/#/q/status:open+project:coreboot+branch:master+topic:clang-fixes,n,z you will need those fixes to get anywhere with building t60/x60 with clang. at the time of writing that was 6122/1, 6121/1, 6120/1 and 6119/1<br/><br/>
 
@@ -146,17 +122,102 @@
 			TODO: T60: find (for rare buggy CPU's that are unstable without microcode updates) if there is a workaround (patched kernel, special parameter, etc) So far, only 1 processor has been found to have issues. See microcode errata sheets http://download.intel.com/design/mobile/SPECUPDT/31407918.pdf and http://download.intel.com/design/mobile/SPECUPDT/30922214.pdf and then look at the debugging results collected in <a href="../t7200q">t7200q</a> directory (q means quirk). 
 		</p>
 
+		<p>
+			Every other T7200 tested so far has worked without microcode updates.
+		</p>
+
 		<p><a href="#pagetop">Back to top of page.</a></p>
 
 <hr/>
 
-	<h1 id="lcd_i945_incompatibility">LCD panels on i945 - fix incompatible panels</h1>
+	<h1 id="fastboot">Fast boot</h1>
+
+		<p>
+			Based on information supplied by Charles Devereaux. Look into this. The following are the files 
+			that he gave me, and what he said:
+		</p>
+
+		<ul>
+			<li><a href="fastboot/x60.config">x60.config</a></li>
+			<li><a href="fastboot/get-systemd.sh">get-systemd.sh</a></li>
+			<li><a href="fastboot/grub.cfg.memdisk">grub.cfg.memdisk</a></li>
+			<li><a href="fastboot/grub.cfg">grub.cfg</a></li>
+		</ul>
+
+		<p>
+			failsafes to allow people to experiment with few risks.The memdisk tries to load a grub.cfg from each partition,
+			failing that from the CBFS, and failing that prepares the serial port and
+			shows a simple menu reminding the user that this is the memdisk (beeps are
+			also played) and some simple options (ex: call directly a linux kernel).
+		</p>
+
+		<p>
+			The grub.cfg from the CBFS tries to load a working grub.cfg from a
+			thumbdrive, and failing that shows a menu offering to boot on seabios (for
+			CD boot)
+		</p>
+
+		<p>
+			This makes it possible to say remove the HD and still have a booting
+			machine (using a thumbdrive) - which may be an interesting option to offer
+			to your users (a "rescue/reinstall" thumbdrive, or a simple failsafe in
+			case the user wants to reinstall from a CD into a brand new HD)
+		</p>
+
+		<p>
+			It's also hacker friendly:
+		</p>
+		<ul>
+			<li>
+				the memdisk acts as a failsave in case the flash has had its grub.cfg removed or damanged
+			</li>
+			<li>
+				the flash grub.cfg is a failsafe in case the HD grub.cfg was damaged or removed
+			</li>
+		</ul>
+
+		<p>
+			Just some simple if logic, but it does the job.
+		</p>
+
+		<p>
+			Besides that, if you want to experiment with fast booting, my systemd
+			configure script follows. Just boot your kernel with
+			init=/lib/systemd/systemd. You also need to add at the botton of the
+			resulting /lib/udev/rules.d/99-systemd.rules the following to make network
+			configuration automatic:<br/>
+			<b>
+				SUBSYSTEM=="net", KERNEL!="lo", TAG+="systemd",<br/>
+				ENV{SYSTEMD_ALIAS}+="/sys/subsystem/net/devices/$name"<br/>
+				ENV{SYSTEMD_WANTS}="ifup@%k.service"
+			</b>
+		</p>
 
 		<p>
-			Fix X60 Tablet issues (see incompatible panels listed at <a href="../index.html#supported_x60t_list">../index.html#supported_x60t_list</a>).
+			It will put the systemd stuff in /lib/systemd instead of /usr/lib/systemd
+			(on debian), allowing a peacefull coexistence, and won't use any of the old
+			/etc/init.d stuff (major cause of slowdown).
 		</p>
 
 		<p>
+			This is the exact systemd configuration I used to get a system up in 0.6s
+			as reported on the mailing list.
+		</p>
+	
+		<p>	
+			Further optimizations of the boot-time requires to optimize the kernel
+			configuration even more. Here is my current .config (everything is
+			built-in, slowly removing modules (ex: yenta, firewire) one by one to see
+			where I can gain speed.
+		</p>
+
+		<p><a href="#pagetop">Back to top of page.</a></p>
+
+<hr/>
+
+	<h1 id="lcd_i945_incompatibility">LCD panels on i945 - fix incompatible panels</h1>
+
+		<p>
 			Fix T60 issues (see incompatible panels listed at <a href="../index.html#supported_t60_list">../index.html#supported_t60_list</a>).
 		</p>
 
@@ -176,6 +237,20 @@
 		<p>
 			Other values/registers might also need to be added to the script for these tests.
 		</p>
+
+		<p>
+			check if intel_bios_reader from intel-gpu-tools reports the same value (BIOS has a hardcoded value) for PWM modulation frequency. 
+			This file can read the VBIOS (64K dump).
+		</p>
+
+		<p>
+			Check other tools in intel-gpu-tools aswell, compare outputs. Possibly add more information to intel-regs.py output (submit changes to mtjm).
+			Do oprom trace / replay (<a href="http://www.coreboot.org/User:GNUtoo#How_to_get_rid_of_the_vbios_of_the_x60_.5BNew_Version.5D">http://www.coreboot.org/User:GNUtoo#How_to_get_rid_of_the_vbios_of_the_x60_.5BNew_Version.5D</a>)
+		</p>
+
+		<p>
+			Study how EDID works and how gma.c handles it.
+		</p>
 		
 		<p>
 			Original getregs.py script can be found at <a href="http://hg.mtjm.eu/scripts/file/tip/intel-regs.py">http://hg.mtjm.eu/scripts/file/tip/intel-regs.py</a>
@@ -219,15 +294,12 @@
 			<b><i>Also check <a href="#5320_kernel312fix">#5320_kernel312fix</a> (to fix 3D on kernel 3.12/higher)</i></b>
 		</p>
 		<p>
-			<b>The fix below was done on 5320/6 but should work just fine on later versions of 5320.</b>
+			<b>The fix below was done on 5320/6 (from review.coreboot.org) but should work just fine on later versions of 5320.</b>
 		</p>
 		<p>
 			Native gpu init + backlight controls! (Fn keys). Also confirmed on X60 Tablet (1024x768) and X60 Tablet (1400x1050)
 		</p>
 		<p>
-			<b>Checkout <a href="http://review.coreboot.org/#/c/5320">http://review.coreboot.org/#/c/5320</a> on top of a coreboot git clone.</b>
-		</p>
-		<p>
 			<b>Add backlight controls:</b> in <i>src/mainboard/lenovo/x60/devicetree.cb</i>, change <b>gpu_backlight</b> to <b>0x879F879E</b>
 		</p>
 		<p>
@@ -236,6 +308,9 @@
 			<b># devmem2 0xe4361254 w</b>
 		</p>
 		<p>
+			The change is also included in libreboot 6.
+		</p>
+		<p>
 			When doing this, it gave back that value. The same trick was used to get backlight controls for T60 (see <a href="#t60_native_notes">#t60_native_notes</a>).
 		</p>
 
@@ -278,14 +353,7 @@
 			<b><i>Also check <a href="#5320_kernel312fix">#5320_kernel312fix</a> (to fix 3D on kernel 3.12/higher)</i></b>
 		</p>
 		<p>
-			<b>The fix below was done on an earlier version of 5345, but should work on the current version.</b>
-		</p>
-		<p>
-			Native gpu init + backlight controls! (Fn keys). <b>Working on all panels except for 14&quot; XGA (1024x768) and 15&quot; XGA (1024x768)!</b>
-		<p>
-		<p>
-			<b>Checkout <a href="http://review.coreboot.org/#/c/5320">http://review.coreboot.org/#/c/5320</a>
-			and then cherry-pick <a href="http://review.coreboot.org/#/c/5345">http://review.coreboot.org/#/c/5345</a> on top of a coreboot git clone.</b>
+			<b>The fix below was done on an earlier version of 5345 changeset (review.coreboot.org), but should work on the current version. it is included in libreboot 6</b>
 		</p>
 		<p>
 			<b>Add backlight controls:</b> in <i>src/mainboard/lenovo/t60/devicetree.cb</i>, change <b>gpu_backlight</b> to <b>0x58BF58BE</b>
@@ -300,8 +368,7 @@
 			</p>
 
 		<p>
-			Note to self: Run oprom trace for phcoder (T60 w/ 5320+5345 + oprom + grub) for phcoder. This (among other things) 
-			might help to get all panels supported, without modification.
+			See <a href="#lcd_i945_incompatibility">#lcd_i945_incompatibility</a>.
 		</p>
 		
 		<p><a href="#pagetop">Back to top of page</a></p>
@@ -417,6 +484,9 @@
 
 	<h1 id="i945_vbt">i945 gfx: X60/T60 VBT implementation (experimental: testing)</h1>
 		<p>
+			intel_bios_dumper (use man) in intel-gpu-tools seems interesting.
+		</p>
+		<p>
 			<b>Use 'drm.debug=0x06' kernel parameter when booting in grub! Make sure to use kernel 3.14.4 as before (or any recent kernel).</b>
 		</p>
 		<p>
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