The iMX lpuart driver added at 44e17aa60d47 ("xen/arm: Add i.MX lpuart driver")
is not enough to boot a Linux based dom0 when certain drivers, such as the
watchdog driver, are enabled.

We're also fixing compatibles in imx-lpuart to allow Xen to use the UART
on the QXP variant as well.

NOTE:
There's still an open point regarding the watchdog from v1, but I wanted
to post this series to show the filtering changes mostly because they also
clarify what exists and what we can definitely get away with blocking /
ignoring out of all the SMC SIP calls.

v2: (See each path for complete changelog)
 - Added SIP call filtering (Julien Grall)
 - Replace lpuart compatible instead (Julien Grall)

v1: https://lore.kernel.org/xen-devel/20240131114952.305805-1-john.ernberg@actia.se

John Ernberg (2):
  xen/arm: Add imx8q{m,x} platform glue
  xen/drivers: imx-lpuart: Replace iMX8QM compatible with iMX8QXP

 xen/arch/arm/platforms/Makefile |   1 +
 xen/arch/arm/platforms/imx8qm.c | 143 ++++++++++++++++++++++++++++++++
 xen/drivers/char/imx-lpuart.c   |   2 +-
 3 files changed, 145 insertions(+), 1 deletion(-)
 create mode 100644 xen/arch/arm/platforms/imx8qm.c

-- 
2.43.0