[PATCH v2 0/3] Implement the Opentitan watchdog

[Tyler Ng]

This patch series implements the OpenTitan Always-On Timer device, and
includes several fixes/feature additions to existing devices.

The memory map used for reference can be found here:
https://github.com/lowRISC/opentitan/blob/217a0168ba118503c166a9587819e3811eeb0c0c/hw/top_earlgrey/sw/autogen/top_earlgrey_memory.h

The main components of this patch series are:
1. The OpenTitan AON Timer device itself, and an associated qtest.
2. Fix a bug found with the sifive plic device.
3. Adds support for writes to mtime in the Ibex timer device and adds
a qtest for it.

Tyler Ng (3):
  hw/watchdog: wdt_ibex_aon.c: Implement the watchdog for the OpenTitan
  hw/intc: sifive_plic.c: Fix interrupt priority index.
  hw/timer: ibex_timer.c: Add support for writes to mtime

 hw/intc/sifive_plic.c              |   4 +-
 hw/riscv/Kconfig                   |   4 +
 hw/riscv/opentitan.c               |  21 +-
 hw/timer/ibex_timer.c              |  98 +++++--
 hw/watchdog/Kconfig                |   3 +
 hw/watchdog/meson.build            |   1 +
 hw/watchdog/wdt_ibex_aon.c         | 405 +++++++++++++++++++++++++++++
 include/hw/riscv/opentitan.h       |   7 +-
 include/hw/timer/ibex_timer.h      |   6 +
 include/hw/watchdog/wdt_ibex_aon.h |  67 +++++
 tests/qtest/ibex-aon-timer-test.c  | 189 ++++++++++++++
 tests/qtest/ibex-timer-test.c      | 178 +++++++++++++
 tests/qtest/meson.build            |   4 +
 13 files changed, 953 insertions(+), 34 deletions(-)
 create mode 100644 hw/watchdog/wdt_ibex_aon.c
 create mode 100644 include/hw/watchdog/wdt_ibex_aon.h
 create mode 100644 tests/qtest/ibex-aon-timer-test.c
 create mode 100644 tests/qtest/ibex-timer-test.c

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2.34.1