298b35923d
FspMultiPhaseSiInit API was introduced with FSP 2.2 specification onwards. EnableMultiPhaseSiliconInit is an arch UPD also introduced as part of FSP 2.2 specification to allow calling FspMultiPhaseSiInit API. However, some platforms adhere to the FSP specification but don't have arch UPD structure, for example : JSL, TGL and Xeon-SP. Out of these platforms, TGL supports calling of FspMultiPhaseSiInit API and considered EnableMultiPhaseSiliconInit as a platform-specific UPD rather than an arch UPD to allow calling into FspMultiPhaseSiInit API. It is important to ensure that the UPD setting and the callback for MultiPhaseInit are kept in sync, else it could result in broken behavior e.g. a hang is seen in FSP if EnableMultiPhaseSiliconInit UPD is set to 1 but the FspMultiPhaseSiInit API call is skipped. This patch provides an option for users to choose to bypass calling into MultiPhaseSiInit API and ensures the EnableMultiPhaseSiliconInit UPD is set to its default state as `disable` so that FSP-S don't consider MultiPhaseSiInit API is a mandatory entry point prior to calling other FSP API entry points. List of changes: 1. Add `FSPS_HAS_ARCH_UPD` Kconfig for SoC to select if `FSPS_ARCH_UPD` structure is part of `FSPS_UPD` structure. 2. Drop `soc_fsp_multi_phase_init_is_enable()` from JSL and Xeon-SP SoCs, a SoC override to callout that SoC doesn't support calling MultiPhase Si Init is no longer required. 3. Add `FSPS_USE_MULTI_PHASE_INIT` Kconfig for SoC to specify if SoC users want to enable `EnableMultiPhaseSiliconInit` arch UPD (using `fsp_fill_common_arch_params()`) and execute FspMultiPhaseSiInit() API. 4. Presently selects `FSPS_USE_MULTI_PHASE_INIT` from IA TCSS common code. 5. Add `fsp_is_multi_phase_init_enabled()` that check applicability of MultiPhase Si Init prior calling FspMultiPhaseSiInit() API to honor SoC users' decision. 6. Drop `arch_silicon_init_params()` from SoC as FSP driver (FSP 2.2) would check the applicability of MultiPhase Si Init prior calling FspMultiPhaseSiInit() API. Additionally, selects FSPS_HAS_ARCH_UPD for Alder Lake as Alder Lake FSPS_UPD structure has `FSPS_ARCH_UPD` structure and drops `arch_silicon_init_params()` from SoC `platform_fsp_silicon_init_params_cb()`. Skip EnableMultiPhaseSiliconInit hardcoding for Tiger Lake and uses the fsp_is_multi_phase_init_enabled() function to override EnableMultiPhaseSiliconInit UPD prior calling MultiPhaseSiInit FSP API. TEST=EnableMultiPhaseSiliconInit UPD is getting set or reset based on SoC user selects FSPS_USE_MULTI_PHASE_INIT Kconfig. Change-Id: I019fa8364605f5061d56e2d80b20e1a91857c423 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/56382 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> |
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| Documentation | ||
| LICENSES | ||
| configs | ||
| payloads | ||
| src | ||
| tests | ||
| util | ||
| .checkpatch.conf | ||
| .clang-format | ||
| .editorconfig | ||
| .gitignore | ||
| .gitmodules | ||
| .gitreview | ||
| 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:
- 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.