[RFC PATCH 0/5] Exception handling in HYP mode on ARMv7-A

Jim Posen jim.posen at gmail.com
Mon Oct 25 01:58:03 CEST 2021

Currently, when U-Boot is running in hypervisor mode on ARMv7-A CPUs
with virtualization extensions, the exception handling does not work.
A couple things need to change which are detailed in my earlier
message to the u-boot mailing list with the subject "Exception
handling in HYP mode on ARMv7-A".

I have verified that this patch series works on the ODroid XU4 and
the Raspberry Pi 3B in Aarch32 mode when running in hypervisor mode.
One simple way to verify is by running the miscellaneous "exception"
command (CMD_EXCEPTION).

Jim Posen (5):
  Compile for ARMv7-A with virtualization extensions
  Hypervisor mode interrupt vector table
  Set HVBAR register correctly
  Remove dead code
  Fix PC adjustment logic in exception handlers

 arch/arm/Makefile                 |   4 +
 arch/arm/cpu/armv7/start.S        |   5 ++
 arch/arm/include/asm/u-boot-arm.h |  14 ++--
 arch/arm/lib/interrupts.c         |  26 +++---
 arch/arm/lib/relocate.S           |   8 ++
 arch/arm/lib/vectors.S            | 129 +++++++++++++++++++++++-------
 arch/arm/mach-bcm283x/Kconfig     |   3 +
 arch/arm/mach-exynos/Kconfig      |   1 +
 8 files changed, 139 insertions(+), 51 deletions(-)


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