SBSA Reference Platform can have GIC ITS present. And when it has then
we can have complex PCI Express setup (and some other things).

First patch adds support for GIC ITS. Address is read from TF-A via SMC
call. IORT is generated, MADT has ITS information. Linux boots and sees
GIC ITS as expected. SMMU information is also provided in IORT and used.

Second patch tries to take care of system where GIC ITS is not present
(like week old QEMU). If GIC ITS address is not set then there is no
mention of it in MADT, Linux boots.

But information is still present in IORT. I do not know ASL and do not
know how to make ITS information present only when needed. Any help or
pointers?

Marcin Juszkiewicz (1):
  Platform/QemuSbsa: handle lack of ITS in MADT

Shashi Mallela (1):
  Platform/SbsaQemu: add GIC ITS support

 Silicon/Qemu/SbsaQemu/SbsaQemu.dec            |   3 +
 Platform/Qemu/SbsaQemu/SbsaQemu.dsc           |   3 +
 .../Qemu/SbsaQemu/AcpiTables/AcpiTables.inf   |   2 +
 .../SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf       |   1 +
 .../SbsaQemuPlatformDxe.inf                   |   1 +
 .../Include/IndustryStandard/SbsaQemuAcpi.h   |  11 ++
 .../Include/IndustryStandard/SbsaQemuSmc.h    |   1 +
 .../Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c |  18 +++
 .../SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c |  10 ++
 Silicon/Qemu/SbsaQemu/AcpiTables/Iort.aslc    | 135 ++++++++++++++++++
 10 files changed, 185 insertions(+)
 create mode 100644 Silicon/Qemu/SbsaQemu/AcpiTables/Iort.aslc

-- 
2.41.0



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