[PATCH v4 00/11] Add SiFive TMC0 and SMC0 driver

Nick Hu nick.hu at sifive.com
Tue Aug 19 20:32:39 PDT 2025


SiFive TMC0 and SMC0 are the power controllers that controls the Tile and
CoreComplex power domain. Add the drivers to support the power
management features such as HSM STOP and System Suspend.

Features such as power management may require flushing the entire
cache before entering a non-retention power state. To support this, a
simple cache flush framework is introduced to allow the external CMO
to perform a full cache flush.

Changes in v4:
- Call fdt_cmo_init() directly as part of generic_early_init()
- Rename SBI_HART_EXT_XSF* to SBI_HART_EXT_XSIFIVE*
- Move the TMC0 driver to the lib/utils/hsm/
- Move the SMC0 driver to the lib/utils/suspend/

Changes in v3:
- Add the SiFive TMC and SMC driver

Changes in v2:
- Since the platform override hooks was deprecated, use the fdt_driver
for initializing the sifive_dev_platform.

Nick Hu (10):
  lib: utils: Add cache flush library
  lib: utils: Add FDT cache library
  lib: utils/cache: Add fdt cmo helpers
  lib: sbi: Add SiFive proprietary xsfcflushdlone
  lib: sbi: Add SiFive proprietary xsfcease
  lib: utils/ipi: Exposing the ACLINT IPI device
  lib: utils/irqchip: Add APLIC restore function
  platform: sifive: Add SiFive TMC0 driver
  lib: utils/timer: Expose timer update function
  platform: sifive: Add SiFive SMC0 driver

Vincent Chen (1):
  utils: cache: Add SiFive ccache controller

 include/sbi/sbi_hart.h                        |   4 +
 include/sbi_utils/cache/cache.h               |  69 +++
 include/sbi_utils/cache/fdt_cache.h           |  34 ++
 include/sbi_utils/cache/fdt_cmo_helper.h      |  34 ++
 include/sbi_utils/hsm/fdt_hsm_sifive_inst.h   |  20 +
 include/sbi_utils/hsm/fdt_hsm_sifive_tmc0.h   |  19 +
 include/sbi_utils/ipi/aclint_mswi.h           |   1 +
 include/sbi_utils/irqchip/aplic.h             |   3 +
 .../suspend/fdt_suspend_sifive_smc0.h         |  18 +
 include/sbi_utils/timer/aclint_mtimer.h       |   5 +
 lib/sbi/sbi_hart.c                            |   2 +
 lib/utils/Kconfig                             |   2 +
 lib/utils/cache/Kconfig                       |  23 +
 lib/utils/cache/cache.c                       |  46 ++
 lib/utils/cache/fdt_cache.c                   |  87 ++++
 lib/utils/cache/fdt_cache_drivers.carray      |   3 +
 lib/utils/cache/fdt_cmo_helper.c              | 112 +++++
 lib/utils/cache/fdt_sifive_ccache.c           | 175 +++++++
 lib/utils/cache/objects.mk                    |  14 +
 lib/utils/hsm/Kconfig                         |   5 +
 lib/utils/hsm/fdt_hsm_sifive_tmc0.c           | 468 ++++++++++++++++++
 lib/utils/hsm/objects.mk                      |   2 +
 lib/utils/ipi/aclint_mswi.c                   |   5 +
 lib/utils/irqchip/aplic.c                     | 160 +++---
 lib/utils/suspend/Kconfig                     |   4 +
 lib/utils/suspend/fdt_suspend_sifive_smc0.c   | 323 ++++++++++++
 lib/utils/suspend/objects.mk                  |   3 +
 lib/utils/timer/aclint_mtimer.c               |  28 +-
 platform/generic/Kconfig                      |   5 +
 platform/generic/configs/defconfig            |   5 +
 platform/generic/platform.c                   |   3 +-
 platform/generic/sifive/objects.mk            |   3 +
 platform/generic/sifive/sifive_dev_platform.c |  57 +++
 33 files changed, 1667 insertions(+), 75 deletions(-)
 create mode 100644 include/sbi_utils/cache/cache.h
 create mode 100644 include/sbi_utils/cache/fdt_cache.h
 create mode 100644 include/sbi_utils/cache/fdt_cmo_helper.h
 create mode 100644 include/sbi_utils/hsm/fdt_hsm_sifive_inst.h
 create mode 100644 include/sbi_utils/hsm/fdt_hsm_sifive_tmc0.h
 create mode 100644 include/sbi_utils/suspend/fdt_suspend_sifive_smc0.h
 create mode 100644 lib/utils/cache/Kconfig
 create mode 100644 lib/utils/cache/cache.c
 create mode 100644 lib/utils/cache/fdt_cache.c
 create mode 100644 lib/utils/cache/fdt_cache_drivers.carray
 create mode 100644 lib/utils/cache/fdt_cmo_helper.c
 create mode 100644 lib/utils/cache/fdt_sifive_ccache.c
 create mode 100644 lib/utils/cache/objects.mk
 create mode 100644 lib/utils/hsm/fdt_hsm_sifive_tmc0.c
 create mode 100644 lib/utils/suspend/fdt_suspend_sifive_smc0.c
 create mode 100644 platform/generic/sifive/sifive_dev_platform.c

-- 
2.17.1




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