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qemu-e2k/hw/timer
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Richard Petri 77cd997161 hw/timer/armv7m_systick: Update clock source before enabling timer 
Starting the SysTick timer and changing the clock source a the same time
will result in an error, if the previous clock period was zero. For exmaple,
on the mps2-tz platforms, no refclk is present. Right after reset, the
configured ptimer period is zero, and trying to enabling it will turn it off
right away. E.g., code running on the platform setting

    SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_ENABLE_Msk;

should change the clock source and enable the timer on real hardware, but
resulted in an error in qemu.

Signed-off-by: Richard Petri <git@rpls.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20220201192650.289584-1-git@rpls.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 		2022-02-08 10:56:28 +00:00
..
Kconfig hw/timer: Add SiFive PWM support 2021-09-21 07:56:49 +10:00
a9gtimer.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
allwinner-a10-pit.c allwinner-a10-pit: Use ptimer_free() in the finalize function to avoid memleaks 2021-01-08 15:13:38 +00:00
altera_timer.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
arm_mptimer.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
arm_timer.c arm: Update infocenter.arm.com URLs 2021-02-11 11:50:14 +00:00
armv7m_systick.c hw/timer/armv7m_systick: Update clock source before enabling timer 2022-02-08 10:56:28 +00:00
aspeed_timer.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
avr_timer16.c hw/timer: avr: Add limited support for 16-bit timer peripheral 2020-07-11 11:02:05 +02:00
bcm2835_systmr.c hw/timer/bcm2835: Support the timer COMPARE registers 2020-10-20 16:12:00 +01:00
cadence_ttc.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
cmsdk-apb-dualtimer.c clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
cmsdk-apb-timer.c clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
digic-timer.c digic-timer: Use ptimer_free() in the finalize function to avoid memleaks 2021-01-08 15:13:38 +00:00
etraxfs_timer.c hw/timer/etraxfs_timer: Add vmstate for ETRAX timers 2022-01-18 12:32:16 +01:00
exynos4210_mct.c exynos4210_mct: Use ptimer_free() in the finalize function to avoid memleaks 2021-01-08 15:13:39 +00:00
exynos4210_pwm.c exynos4210_pwm: Use ptimer_free() in the finalize function to avoid memleaks 2021-01-08 15:13:38 +00:00
grlib_gptimer.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
hpet.c nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
i8254.c hw/i8254: fix vmstate load 2021-03-16 14:30:30 -04:00
i8254_common.c hw/i386: Remove obsolete LoadStateHandler::load_state_old handlers 2019-11-05 23:33:12 +01:00
ibex_timer.c hw: timer: ibex_timer: update/add reg address 2022-01-21 15:52:56 +10:00
imx_epit.c hw/timer/imx_epit: Avoid assertion when CR.SWR is written 2020-08-03 17:56:11 +01:00
imx_gpt.c hw/timer/imx_gpt.c: Switch to transaction-based ptimer API 2019-10-15 18:09:03 +01:00
meson.build hw/timer: Add SiFive PWM support 2021-09-21 07:56:49 +10:00
mips_gictimer.c hw: Do not include hw/sysbus.h if it is not necessary 2021-05-02 17:24:50 +02:00
mss-timer.c mss-timer: Use ptimer_free() in the finalize function to avoid memleaks 2021-01-08 15:13:38 +00:00
npcm7xx_timer.c hw/timer/npcm7xx_timer: Use new clock_ns_to_ticks() 2021-03-08 17:20:01 +00:00
nrf51_timer.c hw/timer/nrf51_timer: Add trace event of counter value update 2020-05-11 11:05:52 +01:00
omap_gptimer.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
omap_synctimer.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
pxa2xx_timer.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
renesas_cmt.c hw/timer: RX62N compare match timer (CMT) 2020-06-22 18:37:12 +02:00
renesas_tmr.c hw/timer/renesas_tmr: Add default-case asserts in read_tcnt() 2021-03-30 14:05:34 +01:00
sh_timer.c hw/timer/sh_timer: Remove use of hw_error 2021-10-30 18:39:37 +02:00
sifive_pwm.c hw/timer: Add SiFive PWM support 2021-09-21 07:56:49 +10:00
slavio_timer.c hw/timer/slavio_timer: Allow 64-bit accesses 2021-01-06 11:41:37 +00:00
sse-counter.c hw: Do not include hw/irq.h if it is not necessary 2021-05-02 17:24:50 +02:00
sse-timer.c hw/timer/sse-timer: Propagate eventual error in sse_timer_realize() 2021-03-12 12:43:52 +00:00
stellaris-gptm.c hw/timer/stellaris-gptm: Use Clock input instead of system_clock_scale 2021-09-01 11:08:20 +01:00
stm32f2xx_timer.c hw/timer/stm32f2xx_timer: Remove dead assignment 2020-05-04 14:43:24 +02:00
trace-events hw/sh4: Change debug printfs to traces 2021-10-30 18:39:37 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
xilinx_timer.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00