7e247a3fa8
Rewrite the Kahlee IRQ mapping handling to be in line with the newer AMD SoCs to allow making the largest part of the corresponding code common for all AMD SoCs in the coreboot tree. The PIC-mode IRQ numbers for both PIRQ_ASF and PIRQ_SDIO were 0 in the data tables which is the PIT IRQ which looks very wrong to me, so it was changed to PIRQ_NC. Since the ASF and likely also the SDIO controller are unused, this shouldn't change runtime behavior. The data tables also had non 0 and non 0x1f entries in the following locations the internal BKDG #55072 revision 3.04 describes as unused: 0x31, 0x33, 0x35-0x37, 0x40, 0x50-0x53. The entry at 0x32 is also non 0 and non 0x1f and the description in the BKDG says that it controls the IRQ mapping of another internal PCI device, but that PCI device doesn't exist in the SoC. TEST=No obvious IRQ-related breakage on google/liara Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com> Change-Id: I9b3bfca33d88ef3989b63f4fe6c301e0e485b7e9 Reviewed-on: https://review.coreboot.org/c/coreboot/+/68851 Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com> Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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.