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remoteproc: k3-m4: Add a remoteproc driver for M4F subsystem

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The AM62x and AM64x SoCs of the TI K3 family has a Cortex M4F core in
the MCU domain. This core is typically used for safety applications in a
stand alone mode. However, some application (non safety related) may
want to use the M4F core as a generic remote processor with IPC to the
host processor. The M4F core has internal IRAM and DRAM memories and are
exposed to the system bus for code and data loading.

A remote processor driver is added to support this subsystem, including
being able to load and boot the M4F core. Loading includes to M4F
internal memories and predefined external code/data memories. The
carve outs for external contiguous memory is defined in the M4F device
node and should match with the external memory declarations in the M4F
image binary. The M4F subsystem has two resets. One reset is for the
entire subsystem i.e including the internal memories and the other, a
local reset is only for the M4F processing core. When loading the image,
the driver first releases the subsystem reset, loads the firmware image
and then releases the local reset to let the M4F processing core run.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Andrew Davis <afd@ti.com>
Tested-by: Wadim Egorov <w.egorov@phytec.de>
Link: https://lore.kernel.org/r/20240802152109.137243-4-afd@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Martyn Welch
2024-08-02 10:21:03 -05:00
committed by Mathieu Poirier
parent ce6acb2240
commit ebcf9008a8
3 changed files with 681 additions and 0 deletions
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13
drivers/remoteproc/Kconfig
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@@ -340,6 +340,19 @@ config TI_K3_DSP_REMOTEPROC
It's safe to say N here if you're not interested in utilizing
the DSP slave processors.
config TI_K3_M4_REMOTEPROC
tristate "TI K3 M4 remoteproc support"
depends on ARCH_K3 || COMPILE_TEST
select MAILBOX
select OMAP2PLUS_MBOX
help
Say m here to support TI's M4 remote processor subsystems
on various TI K3 family of SoCs through the remote processor
framework.
It's safe to say N here if you're not interested in utilizing
a remote processor.
config TI_K3_R5_REMOTEPROC
tristate "TI K3 R5 remoteproc support"
depends on ARCH_K3

1
drivers/remoteproc/Makefile
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@@ -37,5 +37,6 @@ obj-$(CONFIG_ST_REMOTEPROC) += st_remoteproc.o
obj-$(CONFIG_ST_SLIM_REMOTEPROC) += st_slim_rproc.o
obj-$(CONFIG_STM32_RPROC) += stm32_rproc.o
obj-$(CONFIG_TI_K3_DSP_REMOTEPROC) += ti_k3_dsp_remoteproc.o
obj-$(CONFIG_TI_K3_M4_REMOTEPROC) += ti_k3_m4_remoteproc.o
obj-$(CONFIG_TI_K3_R5_REMOTEPROC) += ti_k3_r5_remoteproc.o
obj-$(CONFIG_XLNX_R5_REMOTEPROC) += xlnx_r5_remoteproc.o

667
drivers/remoteproc/ti_k3_m4_remoteproc.c Normal file
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