429b19962a
DTTS indicated Dynamic Thermal Table Switching.The proposal would like
to develop the schematic for switching 6 thermal table by lid status,
machine body mode and temperature. After entering the OS, the thermal
table would be table A. If the “Motion” or “Lid status change” is
detected. The thermal table would switch to laptop mode or lid close
mode.
Once the higher environment temperatures are detected,the thermal
table would switch to the corresponding power throttle table (B, D or
F). Based on these table switching mechanisms, no matter how the
end-user uses Chromebook,they could enjoy more humanized thermal
designs.
Release Over Over Release .
Temp. Temp. Temp. Temp. .
-------------------------------------------------------- .
Desktop mode Table A Table B 50C 45C .
Lid open (Default) .
-------------------------------------------------------- .
Desktop mode Table C Table D 55C 50C .
Lid close .
-------------------------------------------------------- .
Laptop mode Table E Table F 45C 40C .
-------------------------------------------------------- .
On the proposal, the transmission rules are list below:
1. Table A is the default table after booting.
2. A, C, E (Release Temp) can switch to each other.
3. B, D, F (Over Temp) can switch to each other.
4. A and B, C and D, E and F can switch to each other.
5. If Lid open/close or mode switch event trigger, temperature release
tables will translation to each other, temperature over tables will
translation to each other.After that event trigger, EC will check the
new temperature condition and decide if the temperature need to be
trigger.For example, if table A will switch to table D, table A will
switch to C with Lid close event, if temperature is over 55C, EC will
trigger temperature to switch form table C to D.
6. EC will trigger 3 times body-detection events during power on boot
without any body-mode and lid status change. For this case if the
previous table label is on same group, we will based on the temperature
to decide the table.
For example, assume table A is current table. When the temperature
reaches 50C, than the table is switched from A to B. The current table
is B. When the temperature is downgrade below 45C, the table is
switched form B to A. The same rule is for C and D, E and F.
BRANCH=none
BUG=b:232946420
TEST=emerge-skyrim coreboot
Signed-off-by: EricKY Cheng <ericky_cheng@compal.corp-partner.google.com>
Change-Id: I866e5e497e2936984e713029b5f0b6d54cbc9622
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68471
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
|
||
|---|---|---|
| 3rdparty | ||
| Documentation | ||
| LICENSES | ||
| configs | ||
| payloads | ||
| spd | ||
| src | ||
| tests | ||
| util | ||
| .checkpatch.conf | ||
| .clang-format | ||
| .editorconfig | ||
| .gitignore | ||
| .gitmodules | ||
| .gitreview | ||
| .mailmap | ||
| AUTHORS | ||
| COPYING | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc | ||
| README.md | ||
| gnat.adc | ||
| toolchain.inc | ||
README.md
coreboot README
coreboot is a Free Software project aimed at replacing the proprietary BIOS (firmware) found in most computers. coreboot performs a little bit of hardware initialization and then executes additional boot logic, called a payload.
With the separation of hardware initialization and later boot logic, coreboot can scale from specialized applications that run directly firmware, run operating systems in flash, load custom bootloaders, or implement firmware standards, like PC BIOS services or UEFI. This allows for systems to only include the features necessary in the target application, reducing the amount of code and flash space required.
coreboot was formerly known as LinuxBIOS.
Payloads
After the basic initialization of the hardware has been performed, any desired "payload" can be started by coreboot.
See https://www.coreboot.org/Payloads for a list of supported payloads.
Supported Hardware
coreboot supports a wide range of chipsets, devices, and mainboards.
For details please consult:
Build Requirements
- make
- gcc / g++
Because Linux distribution compilers tend to use lots of patches. coreboot
does lots of "unusual" things in its build system, some of which break due
to those patches, sometimes by gcc aborting, sometimes - and that's worse -
by generating broken object code.
Two options: use our toolchain (eg. make crosstools-i386) or enable the
ANY_TOOLCHAINKconfig option if you're feeling lucky (no support in this case). - iasl (for targets with ACPI support)
- pkg-config
- libssl-dev (openssl)
Optional:
- gdb (for better debugging facilities on some targets)
- ncurses (for
make menuconfigandmake nconfig) - flex and bison (for regenerating parsers)
Building coreboot
Please consult https://www.coreboot.org/Build_HOWTO for details.
Testing coreboot Without Modifying Your Hardware
If you want to test coreboot without any risks before you really decide to use it on your hardware, you can use the QEMU system emulator to run coreboot virtually in QEMU.
Please see https://www.coreboot.org/QEMU for details.
Website and Mailing List
Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:
You can contact us directly on the coreboot mailing list:
https://www.coreboot.org/Mailinglist
Copyright and License
The copyright on coreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details.
coreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details.
This makes the resulting coreboot images licensed under the GPL, version 2.