QEMU provides an emulated ARM AMBA PrimeCell PL031 RTC.
The patch sets the base address in the board include file according to the definition in hw/arm/virt.c of the QEMU source. It defines the Kconfig option for the existing driver, and enables the RTC driver in qemu_arm64_defconfig and qemu_arm_defconfig as well as the date command.
We need an RTC to provide the GetTime() runtime service in the UEFI subsystem.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- configs/qemu_arm64_defconfig | 2 ++ configs/qemu_arm_defconfig | 2 ++ drivers/rtc/Kconfig | 7 +++++++ include/configs/qemu-arm.h | 3 +++ 4 files changed, 14 insertions(+)
diff --git a/configs/qemu_arm64_defconfig b/configs/qemu_arm64_defconfig index cdf5072fe4..e9a35d010f 100644 --- a/configs/qemu_arm64_defconfig +++ b/configs/qemu_arm64_defconfig @@ -9,6 +9,7 @@ CONFIG_DISTRO_DEFAULTS=y # CONFIG_DISPLAY_BOARDINFO is not set CONFIG_CMD_PCI=y CONFIG_CMD_USB=y +CONFIG_CMD_DATE=y CONFIG_OF_BOARD=y CONFIG_SCSI_AHCI=y CONFIG_AHCI_PCI=y @@ -20,6 +21,7 @@ CONFIG_NVME=y CONFIG_PCI=y CONFIG_DM_PCI=y CONFIG_PCIE_ECAM_GENERIC=y +CONFIG_RTC_PL031=y CONFIG_SCSI=y CONFIG_DM_SCSI=y CONFIG_SYSRESET=y diff --git a/configs/qemu_arm_defconfig b/configs/qemu_arm_defconfig index bbce6cd719..9d30dc31a5 100644 --- a/configs/qemu_arm_defconfig +++ b/configs/qemu_arm_defconfig @@ -9,6 +9,7 @@ CONFIG_DISTRO_DEFAULTS=y # CONFIG_DISPLAY_BOARDINFO is not set CONFIG_CMD_PCI=y CONFIG_CMD_USB=y +CONFIG_CMD_DATE=y CONFIG_OF_BOARD=y CONFIG_SCSI_AHCI=y CONFIG_AHCI_PCI=y @@ -20,6 +21,7 @@ CONFIG_NVME=y CONFIG_PCI=y CONFIG_DM_PCI=y CONFIG_PCIE_ECAM_GENERIC=y +CONFIG_RTC_PL031=y CONFIG_SCSI=y CONFIG_DM_SCSI=y CONFIG_SYSRESET=y diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index a3f8c8aecc..54365092ec 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -48,6 +48,13 @@ config RTC_RX8010SJ help Support for Epson RX8010SJ Real Time Clock devices.
+config RTC_PL031 + bool "Enable ARM AMBA PL031 RTC driver" + help + The ARM PrimeCell Real Time Clock (PL031) is an optional SoC + peripheral based on the Advanced Microcontroller Bus Architecture + (AMBA). It is emulated in QEMU virtual ARM machines. + config RTC_MV bool "Enable Marvell RTC driver" depends on DM_RTC diff --git a/include/configs/qemu-arm.h b/include/configs/qemu-arm.h index 095aec28b1..be516bac0c 100644 --- a/include/configs/qemu-arm.h +++ b/include/configs/qemu-arm.h @@ -24,6 +24,9 @@ /* For block devices, QEMU emulates an ICH9 AHCI controller over PCI */ #define CONFIG_SYS_SCSI_MAX_SCSI_ID 6
+/* QEMU emulates the ARM AMBA PL031 RTC */ +#define CONFIG_SYS_RTC_PL031_BASE 0x09010000 + /* Environment options */ #define CONFIG_ENV_SIZE SZ_64K