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From: Michael Rolnik <mrolnik@gmail.com>
To: qemu-devel@nongnu.org
Cc: Michael Rolnik <mrolnik@gmail.com>,
	me@xcancerberox.com.ar, konrad@adacore.com,
	richard.henderson@linaro.org, f4bug@amsat.org
Subject: [RFC v1 0/1] Implement AVR WDT (watchdog timer)
Date: Thu,  6 May 2021 00:18:48 +0300	[thread overview]
Message-ID: <20210505211849.101005-1-mrolnik@gmail.com> (raw)

1.  Initial implementation of AVR WDT
    There are two issues with this implementation so I need your help here
    a. when I configure the WDT to fire an interrupt every 15ms it actually happens every 6 instructions
    b. when I specify --icount shift=0 qemu stucks

changes since v1
1.  correct RW or RW1C behavior is implemented
2.  icount functionality is fixed
3.  I still observe something strange, it takes AVR 150 instructions to simulate 15ms


*** BLURB HERE ***

Michael Rolnik (1):
  Implement AVR watchdog timer

 MAINTAINERS                   |   2 +
 hw/avr/Kconfig                |   1 +
 hw/avr/atmega.c               |  15 +-
 hw/avr/atmega.h               |   2 +
 hw/watchdog/Kconfig           |   3 +
 hw/watchdog/avr_wdt.c         | 274 ++++++++++++++++++++++++++++++++++
 hw/watchdog/meson.build       |   2 +
 hw/watchdog/trace-events      |   5 +
 include/hw/watchdog/avr_wdt.h |  47 ++++++
 target/avr/cpu.c              |   3 +
 target/avr/cpu.h              |   1 +
 target/avr/helper.c           |   7 +-
 target/avr/translate.c        |  38 ++++-
 13 files changed, 391 insertions(+), 9 deletions(-)
 create mode 100644 hw/watchdog/avr_wdt.c
 create mode 100644 include/hw/watchdog/avr_wdt.h

-- 
2.25.1



             reply	other threads:[~2021-05-05 21:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-05 21:18 Michael Rolnik [this message]
2021-05-05 21:18 ` [RFC 1/1] Implement AVR watchdog timer Michael Rolnik
2021-05-13 12:27   ` Pavel Dovgalyuk
2021-05-14  7:20     ` Michael Rolnik

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