[PATCH v4 0/3] riscv: enable SBI system reset

Heinrich Schuchardt heinrich.schuchardt at canonical.com
Thu Sep 9 15:11:32 CEST 2021


With SBI v0.3 a system reset extension is available. This allows to
implement reboot and poweroff in U-Boot in a system independent way.

* Provide missing constants
* Provide a system reset driver using the system reset extension.

v4:
	* remove the UEFI SystemReset() implementation
	* simplify the code using an array to translate reset types
	* remove a superfluos check to determine if the device was probed
v3:
	add SBI_HSM_HART_STATUS_SUSPENDED,
	    SBI_HSM_HART_STATUS_SUSPEND_PENDING,
	    SBI_HSM_HART_STATUS_RESUME_PENDING
v2:
	correct constants that were blindly copied from Linux

Heinrich Schuchardt (3):
  riscv: add missing SBI extension definitions
  cmd/sbi: use constants instead of numerical values
  sysreset: provide SBI based sysreset driver

 MAINTAINERS                     |  1 +
 arch/riscv/cpu/cpu.c            | 13 ++++++++-
 arch/riscv/include/asm/sbi.h    | 40 ++++++++++++++++++++++++--
 arch/riscv/lib/sbi.c            | 21 +++++++++++---
 cmd/riscv/sbi.c                 | 30 +++++++++----------
 drivers/sysreset/Kconfig        | 12 ++++++++
 drivers/sysreset/Makefile       |  1 +
 drivers/sysreset/sysreset_sbi.c | 51 +++++++++++++++++++++++++++++++++
 8 files changed, 147 insertions(+), 22 deletions(-)
 create mode 100644 drivers/sysreset/sysreset_sbi.c

-- 
2.30.2



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