[SeaBIOS] [PATCH] rtc: Support disabling the RTC timer irq support
Paul Menzel
paulepanter at users.sourceforge.net
Mon Aug 17 21:32:18 CET 2015
Dear Kevin,
Am Montag, den 17.08.2015, 12:23 -0400 schrieb Kevin O'Connor:
> Add a build time config option to remove support for RTC timer
> interrupts along with the associated bios calls requiring that
> support.
>
> Signed-off-by: Kevin O'Connor <kevin at koconnor.net>
> ---
> src/Kconfig | 9 +++++++++
> src/clock.c | 13 ++++++++++++-
> src/hw/rtc.c | 6 ++++++
> src/stacks.c | 2 +-
> 4 files changed, 28 insertions(+), 2 deletions(-)
>
> diff --git a/src/Kconfig b/src/Kconfig
> index 6256242..56a1b2f 100644
> --- a/src/Kconfig
> +++ b/src/Kconfig
> @@ -299,6 +299,15 @@ menu "Hardware support"
> default y
> help
> Support parallel ports. This also enables int 17 parallel port calls.
> + config RTC_TIMER
> + bool "Real Time Clock (RTC) scheduling"
> + default y
> + help
> + Support MC146818 Real Time Clock chip timer
> + interrupts. This also enables int 1583 and int 1586 calls.
> +
> + Disabling this support does not disable access to the RTC
> + cmos registers.
[…]
what is the use case for this option, that means, what are the
circumstances that users might disable it?
The size and speed benefit is probably minimal.
Thanks,
Paul
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