riscv: defconfig: Enable CONFIG_RTC_DRV_EFI config

[GooTal]

fixed: #326

riscv: defconfig: Enable CONFIG_RTC_DRV_EFI config

riscv inclusion
category: config
bugzilla: #326

---

Turn on CONFIG_RTC_DRV_EFI to support system time access via the UEFI

Runtime Services interface on RISC-V platforms:

• CONFIG_RTC_DRV_EFI=y

This option aligns with the approach used in the arm64 defconfig.

[github-actions]

---

开始测试 log: https://github.com/RVCK-Project/rvck/actions/runs/28873451104

参数解析结果

args	value
repository	RVCK-Project/rvck
head ref	pull/327/head
base ref	rvck-6.6
LAVA repo	RVCK-Project/lavaci
LAVA hardware	['qemu']
LAVA Testcase path	lava-testcases/common-test/ltp/ltp.yaml
need run job	kunit-test,kernel-build,check-patch,lava-trigger

---

测试完成

详细结果:

check	result
kunit-test	success
kernel-build	success
check-patch	success
lava-trigger-qemu	success
lava-trigger-sg2042	skipped
lava-trigger-k1	skipped
lava-trigger-lpi4a	skipped

Kunit Test Result

[14:24:31] Testing complete. Ran 482 tests: passed: 465, skipped: 17

• detail log: https://github.com/RVCK-Project/rvck/actions/runs/28873451104/attempts/1/#summary-85642104902

Kernel Build Result

• Kernel build succeeded: RVCK-Project/rvck/327_28873451104_1/

• 19de952d4e166fbc46719899d656f353 /srv/guix_result/0b1d71a6564f18bdf6abf48e9ed61942ec880df4/Image

• dfb729744ee89539367cdc45e4938d5d /root/initramfs.img

• detail log: https://github.com/RVCK-Project/rvck/actions/runs/28873451104/attempts/1/#summary-85642105073

Check Patch Result

Total Errors	0
Total Warnings	0

• detail log: https://github.com/RVCK-Project/rvck/actions/runs/28873451104/attempts/1/#summary-85642104793

LAVA Check (qemu)

args	value
testcase_repo	RVCK-Project/lavaci
lava_template	lava-job-template/qemu/qemu-ltp.yaml
testcase_path	lava-testcases/common-test/ltp/ltp.yaml
kernel_download_url	http://10.30.190.110/openEuler-RISC-V/RVCK/OERV-RVCI/RVCK-Project/rvck/327_28873451104_1/Image
initramfs_download_url	http://10.30.190.110/openEuler-RISC-V/RVCK/OERV-RVCI/RVCK-Project/rvck/327_28873451104_1/initramfs.img
rootfs_download_url	https://fast-mirror.isrc.ac.cn/openeuler-sig-riscv/openEuler-RISC-V/RVCK/openEuler24.03-LTS-SP1/openeuler-rootfs.img.zst
testcase_ref	main
testitem_name	RVCK-Project_rvck_pull_request_target_327__common-test_qemu

result: Lava check done!

• lava log: https://lava.oerv.ac.cn/scheduler/job/3391

• lava result count: [pass]: 10

• detail log: https://github.com/RVCK-Project/rvck/actions/runs/28873451104/attempts/1/#summary-85676145702

[unicornx]

你们有在 QEMU 上做过测试吗？能否指导一下 QEMU 上如何测试？谢谢

[GooTal]

你们有在 QEMU 上做过测试吗？能否指导一下 QEMU 上如何测试？谢谢

开启该选项，可以通过dmesg | grep -i rtc观察rtc相关信息

安装hwclock，可以获取rtc时间。

[unicornx]

你们有在 QEMU 上做过测试吗？能否指导一下 QEMU 上如何测试？谢谢

开启该选项，可以通过dmesg | grep -i rtc观察rtc相关信息

安装hwclock，可以获取rtc时间。

请教一下你在qemu 上是如何启用 UEFI 的？否则默认启动的 rtc 是 goldfish

[GooTal]

这个可以在欧拉sp3的发版，uefi方式启动中，验证。

https://dl-cdn.openeuler.openatom.cn/openEuler-24.03-LTS-SP3/virtual_machine_img/riscv64/

在start_vm_RVA23.sh脚本中，指定了uefi方式启动的固件。发版内核中也已经开启了CONFIG_RTC_DRV_EFI。

以下是信息：

[root@localhost ~]# dmesg | grep rtc
[ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-6.6.0-138.0.0.121.oe2403sp3.riscv64 root=UUID=6bdf12e6-c7a8-41f4-9613-01e4be2e2823 ro console=ttyS0 highres=off earlycon systemd.default_timeout_start_sec=600 rootfstype=ext4 net.ifnames=0 biosdevname=0 nmi_watchdog=1 rd.shell=0 crashkernel=256M reserve_kbox_mem=16M crash_kexec_post_notifiers panic=3 no-steal-time use-sched-idle-time initcall_blacklist=efi_rtc_driver_init
[ 0.000000] blacklisting initcall efi_rtc_driver_init
[ 1.870868] initcall efi_rtc_driver_init blacklisted
[ 1.874580] goldfish_rtc 101000.rtc: registered as rtc0
[ 1.875715] goldfish_rtc 101000.rtc: setting system clock to 2026-07-11T01:29:55 UTC (1783733395)

[root@localhost ~]# hwclock
2026-07-11 01:31:15.891585+00:00

[root@localhost ~]# cat /boot/config-6.6.0-138.0.0.121.oe2403sp3.riscv64 | grep RTC_DRV_EFI
CONFIG_RTC_DRV_EFI=y