Virtual Machines provided by qemu for arm are already equipped with RTCdevice (PL031). With this patch set, PL031 driver is converted to driver model and by default enabled on qemu-arm. It allows us not only to use date command but also to enable UEFI's GetTime/SetTime() services.
This work is motivated by running UEFI SCT(Self-Certification Test) and measuring time. Heinrich has already posted UEFI's GetTime() implementation.
This is a revised version of my proposal[1].
[1] https://lists.denx.de/pipermail/u-boot/2018-July/333534.html
Changes in v3 (July 11, 2018) * compile drivers/rtc/date.c if DM_RTC * rename pl031_rtc_xxx to pl031_xxx * make struct pl031_platdata private to the driver * add probe function, removing pl031_initted variable * use readl/writel() instead of private macros * add a debug message to pl031_rtc_set() * remove CONFIG_SYS_RTC_PL031_BASE from config_whitelist.txt * enable RTC_PL031 for QEMU_ARM in arch/arm/Kconfig
Changes in v2 (July 4, 2018) * based on Heinrich's comments, * remove legacy mode interface * enable the driver in defconfig
AKASHI Takahiro (3): rtc: compile date.c if DM_RTC rtc: pl031: convert the driver to driver model arm: qemu-arm: enable RTC (PL031) by default
arch/arm/Kconfig | 2 + drivers/rtc/Kconfig | 6 ++ drivers/rtc/date.c | 3 +- drivers/rtc/pl031.c | 126 ++++++++++++++++++++++------------- scripts/config_whitelist.txt | 1 - 5 files changed, 90 insertions(+), 48 deletions(-)