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The Intel® Programmable Services Engine (Intel® PSE) is a dedicated offload engine for IoT functions powered by an ARM Cortex-M7 microcontroller. It provides independent, low-DMIPS computing and low-speed I/Os for IoT applications, plus dedicated services for real-time computing and time-sensitive synchronization. The PSE hosts new functions, including remote out-of-band device management, network proxy, embedded controller lite and sensor hub. This CL enables the user to provide the base address of the PSE FW blob which will then be loaded by the FSP-S onto the ARM controller. PSE FW will do the initialization work of PSE controller and its peripherals. The loading of PSE FW should have negligible impact on boot time unless PSE controller could not locate the PSE FW and FSP will attempt to redo PSE FW loading and wait for PSE handshake until it times out. Once PSE controller locate the PSE FW, it will do initialization concurrently by itself with coreboot booting. It also adds PSE related FSP-S UPD settings which enable the setup of peripheral ownership (assigned to the PSE or x86 subsystem) and interrupts. These assignments need to take place at a given point in the boot process and cannot be changed later. To verify if PSE FW is loaded properly, the user could enable PchPseShellEnabled flag and the log will be printed at PSE UART 2. For further info please refer to doc #611825 (for HW overview) and #614110 (for PSE EDS). Signed-off-by: Lean Sheng Tan <lean.sheng.tan@intel.com> Change-Id: Ifea08fb82fea18ef66bab04b3ce378e79a0afbf7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/55367 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> |
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| payloads | ||
| spd | ||
| src | ||
| tests | ||
| util | ||
| .checkpatch.conf | ||
| .clang-format | ||
| .editorconfig | ||
| .gitignore | ||
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| .gitreview | ||
| AUTHORS | ||
| COPYING | ||
| gnat.adc | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc | ||
| README.md | ||
| toolchain.inc | ||
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:
- doxygen (for generating/viewing documentation)
- 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.