From 935142e062583afb6f454ffa8b655b471938472f Mon Sep 17 00:00:00 2001
From: Francis Rowe
Reading 0xe4361254 (address) in Lenovo BIOS always yields FFFFFFFF, even when writing to it (and writing to it doesn't affect brightness controls).
- 'mtjm' on IRC found that the buttons (Fn keys) control /sys/class/backlight/acpi_video0 which has no affect on 61254 (BLC_PWM_CTL). He says
+ 'mtjm' on IRC found that the buttons (Fn keys) control /sys/class/backlight/acpi_video0 which has no affect on 61254 (BLC_PWM_CTL). This person says
intel_backlight has different values and uses the register. devmem2 works, needs checking lspci -vv for where the memory is mapped,
which is different than on coreboot; mtjm found that it was 0xec061254 on his system (X60 Tablet), and the register value is different too.
This is relevant, because we still don't know how backlight controls are actually handled. We got it working by accident. We need to know more..
@@ -93,7 +93,7 @@
What we want to do is calculate a good value, instead of setting it in devicetree.cb. mtjm says about backlight physics:
it has a light source , uses pulse width modulation (PWM) to turn it on/off, dimming is done by spending less time on.
- Note: this may not be correct; he says his understanding is based on how the Lenote yeeloong works.
+ Note: this may not be correct; this person says that their understanding is based on how the Lenote yeeloong works.
mtjm goes on to say, that the register specifies the frequency used for PWM in its depending on the GPU core frequency, so it
diff --git a/docs/hcl/gm45_remove_me.html b/docs/hcl/gm45_remove_me.html
index d3aff4a..95e9cd2 100644
--- a/docs/hcl/gm45_remove_me.html
+++ b/docs/hcl/gm45_remove_me.html
@@ -540,7 +540,7 @@ DD CC 18 00 11 20 17 00 DD DD 18 00 12 20 17 00
https://communities.intel.com/community/wired/blog/2010/10/14/how-to-basic-eeprom-checksums
- "One of those engineers loves classic rock music, so he selected 0xBABA"
+ "One of those engineers loves classic rock music, so they selected 0xBABA"
In honour of the song Baba O'Reilly by The Who apparently. We're not making this stuff up...
fchmmr: "Others - reserved"
phcoder: the easiest way is a loop at this position which tries different values and reads (and prints) BSM with them
- stefanct: fchmmr: he suggest that you change the value and look how BSM reacts to that
- stefanct: as he pointed out earlier vram size = TOM - BSM
+ stefanct: fchmmr: they suggest that you change the value and look how BSM reacts to that
+ stefanct: as they pointed out earlier vram size = TOM - BSM
stefanct: different values of GMS
stefanct: phcoder: hm... this could be a hint. look at the text description of TOLUD at page 103
stefanct: it mentions 64 MB in the text about BSM as well
diff --git a/docs/future/old.html b/docs/future/old.html
index b99d884..16f1121 100644
--- a/docs/future/old.html
+++ b/docs/future/old.html
@@ -78,7 +78,7 @@
Further notes
Mono Moosbart is the person who wrote the port for macbook2,1. Referenced below are copies (up to date at the time of writing, 20140630) - of the pages he wrote when porting coreboot to the macbook2,1. They are included here in case the main site goes down for + of the pages that this person wrote when porting coreboot to the macbook2,1. They are included here in case the main site goes down for whatever reason, since they include a lot of useful information.
@@ -463,7 +463,7 @@ EndSection
Links to wget backups (and the backups themselves) of Mono's pages (see above) removed temporarily. Mono has given me permission to distribute them, but I need to ask - him to tell me what license these works fall under first. Otherwise, the above URLs should be fine. NOTE TO SELF: REMOVE THIS WHEN DONE + this person to tell me what license these works fall under first. Otherwise, the above URLs should be fine. NOTE TO SELF: REMOVE THIS WHEN DONE