[PATCH 0/3] aarch64: boot in to EL1NS

[Gedare Bloom]

This patch series resolves a lingering problem with the
aarch64 port for the versal, which uses gicv3, that it
is not possible to initialize the GIC distributor and
redistributor (cpuif) while in the non-secure world.
Previously we added a configuration option to allow
running RTEMS in secure world as a way to overcome
this problem, but that is not the right thing to do
in general. Only trusted firmware is expected to run
in secure world, and it is not supported to run an SMP
kernel in secure world, so this problem needs a different
fix.

We now use the bsp_start_hook_0 to initialize the GIC from
EL3 secure before stepping down to EL1NS.
This hook is only called when execution begins in EL3S, which is the
case for the versal running on qemu. GIC initialization is still
attempted again during the generic IRQ initialization. BSPs that
start in EL2 or EL1, or that use gicv2, behave as before, but the
BSP-specific SMP initialization for xilinx-zynqmp moves from hook_0
to hook_1.

rtems-test results for xilinx-versal_lp64_qemu:
Passed:        578
Failed:          2
User Input:      5
Expected Fail:   0
Indeterminate:   0
Benchmark:       3
Timeout:         1
Test too long:   2
Invalid:         0
Wrong Version:   0
Wrong Build:     0
Wrong Tools:     0
Wrong Header:    0
------------------
Total:         591
Failures:
 sp69.exe
 spintrcritical21.exe

------------------

rtems-test results for xilinx-zynqmp_lp64_qemu:

Passed:        577
Failed:          1
User Input:      5
Expected Fail:   0
Indeterminate:   3
Benchmark:       3
Timeout:         1
Test too long:   1
Invalid:         0
Wrong Version:   0
Wrong Build:     0
Wrong Tools:     0
Wrong Header:    0
------------------
Total:         591
Failures:
 spintrcritical21.exe

------------------

Gedare Bloom (3):
  bsps/aarch64: refactor register init and hooks
  arm/gicv3: refactor DIST initialization to helper
  aarch64: always boot into EL1NS

 bsps/aarch64/shared/start/start.S             | 127 ++++++++++--------
 .../xilinx-versal/start/bspstarthooks.c       |   3 +-
 .../xilinx-zynqmp/start/bspstarthooks.c       |  12 +-
 bsps/shared/dev/irq/arm-gicv3.c               |  75 +++++------
 spec/build/bsps/aarch64/a53/grp.yml           |   2 -
 spec/build/bsps/aarch64/a72/grp.yml           |   2 -
 spec/build/bsps/aarch64/optisns.yml           |  20 ---
 spec/build/bsps/aarch64/xilinx-versal/grp.yml |   2 -
 spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml |   2 -
 9 files changed, 109 insertions(+), 136 deletions(-)
 delete mode 100644 spec/build/bsps/aarch64/optisns.yml

-- 
2.25.1