We want to stop parsing DeviceTree to gather hardware information. Instead we ask TF-A for those details using SMC calls. On real hardware platform it could be asking on-board Embedded Controller.
If TF-A answer to SMC call would be not success then we assume that it is old version and go back to parsing DeviceTree data directly. Just now it is present in one place together with new code for handling SMC stuff. TF-A part: https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/25707 Marcin Juszkiewicz (1): SbsaQemu: get cpu information from TF-A Platform/Qemu/SbsaQemu/SbsaQemu.dsc | 4 +- .../Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf | 6 +- .../SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf | 4 +- .../SbsaQemuPlatformDxe.inf | 4 +- .../Library/FdtHelperLib/FdtHelperLib.inf | 33 --- .../Library/SbsaQemuSmc/SbsaQemuSmc.inf | 34 +++ .../Include/IndustryStandard/SbsaQemuSmc.h | 2 + .../SbsaQemu/Include/Library/FdtHelperLib.h | 36 ---- .../SbsaQemu/Include/Library/SbsaQemuSmc.h | 45 ++++ .../Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c | 10 +- .../Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c | 16 +- .../SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c | 9 +- .../Library/FdtHelperLib/FdtHelperLib.c | 98 --------- .../Library/SbsaQemuSmc/SbsaQemuSmc.c | 204 ++++++++++++++++++ 14 files changed, 308 insertions(+), 197 deletions(-) delete mode 100644 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf create mode 100644 Silicon/Qemu/SbsaQemu/Library/SbsaQemuSmc/SbsaQemuSmc.inf delete mode 100644 Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h create mode 100644 Silicon/Qemu/SbsaQemu/Include/Library/SbsaQemuSmc.h delete mode 100644 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c create mode 100644 Silicon/Qemu/SbsaQemu/Library/SbsaQemuSmc/SbsaQemuSmc.c -- 2.43.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#113823): https://edk2.groups.io/g/devel/message/113823 Mute This Topic: https://groups.io/mt/103740602/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
