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| author | Hao Wu | 2020-10-23 23:06:34 +0200 |
|---|---|---|
| committer | Peter Maydell | 2020-10-27 12:10:01 +0100 |
| commit | 7d378ed6e3b4a26f4da887fcccc4c6f1db3dcd42 (patch) | |
| tree | 6770998f835720d3e7bc0879ad7a0705a9650cee /hw/arm/npcm7xx.c | |
| parent | Move npcm7xx_timer_reached_zero call out of npcm7xx_timer_pause (diff) | |
| download | qemu-7d378ed6e3b4a26f4da887fcccc4c6f1db3dcd42.tar.gz qemu-7d378ed6e3b4a26f4da887fcccc4c6f1db3dcd42.tar.xz qemu-7d378ed6e3b4a26f4da887fcccc4c6f1db3dcd42.zip | |
hw/timer: Adding watchdog for NPCM7XX Timer.
The watchdog is part of NPCM7XX's timer module. Its behavior is
controlled by the WTCR register in the timer.
When enabled, the watchdog issues an interrupt signal after a pre-set
amount of cycles, and issues a reset signal shortly after that.
Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Signed-off-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: deleted blank line at end of npcm_watchdog_timer-test.c]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/npcm7xx.c')
| -rw-r--r-- | hw/arm/npcm7xx.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/hw/arm/npcm7xx.c b/hw/arm/npcm7xx.c index 037f3a26f2..c341dcab8b 100644 --- a/hw/arm/npcm7xx.c +++ b/hw/arm/npcm7xx.c @@ -86,6 +86,9 @@ enum NPCM7xxInterrupt { NPCM7XX_TIMER12_IRQ, NPCM7XX_TIMER13_IRQ, NPCM7XX_TIMER14_IRQ, + NPCM7XX_WDG0_IRQ = 47, /* Timer Module 0 Watchdog */ + NPCM7XX_WDG1_IRQ, /* Timer Module 1 Watchdog */ + NPCM7XX_WDG2_IRQ, /* Timer Module 2 Watchdog */ }; /* Total number of GIC interrupts, including internal Cortex-A9 interrupts. */ @@ -353,6 +356,15 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp) qemu_irq irq = npcm7xx_irq(s, first_irq + j); sysbus_connect_irq(sbd, j, irq); } + + /* IRQ for watchdogs */ + sysbus_connect_irq(sbd, NPCM7XX_TIMERS_PER_CTRL, + npcm7xx_irq(s, NPCM7XX_WDG0_IRQ + i)); + /* GPIO that connects clk module with watchdog */ + qdev_connect_gpio_out_named(DEVICE(&s->tim[i]), + NPCM7XX_WATCHDOG_RESET_GPIO_OUT, 0, + qdev_get_gpio_in_named(DEVICE(&s->clk), + NPCM7XX_WATCHDOG_RESET_GPIO_IN, i)); } /* UART0..3 (16550 compatible) */ |