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This mailbox driver provides a communication channel with the Apple IOP controllers found on Apple SoCs. These IOP controllers are used to implement various functions such as the System Manegement Controller (SMC) and NVMe storage. It allows sending and receiving a 96-bit message over a single channel. The header file with the struct used for mailbox messages is taken straight from Linux. Signed-off-by: Mark Kettenis <kettenis@openbsd.org> Signed-off-by: Sven Peter <sven@svenpeter.dev> Reviewed-by: Simon Glass <sjg@chromium.org> Tested on: Macbook Air M1 Tested-by: Simon Glass <sjg@chromium.org>
61 lines
2.1 KiB
Text
61 lines
2.1 KiB
Text
menu "Mailbox Controller Support"
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config DM_MAILBOX
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bool "Enable mailbox controllers using Driver Model"
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depends on DM && OF_CONTROL
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help
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Enable support for the mailbox driver class. Mailboxes provide the
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ability to transfer small messages and/or notifications from one
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CPU to another CPU, or sometimes to dedicated HW modules. They form
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the basis of a variety of inter-process/inter-CPU communication
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protocols.
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config APPLE_MBOX
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bool "Enable Apple IOP controller support"
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depends on DM_MAILBOX && ARCH_APPLE
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default y
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help
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Enable support for the mailboxes that provide a comminucation
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channel with Apple IOP controllers integrated on Apple SoCs.
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These IOP controllers are used to implement various functions
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such as the System Management Controller (SMC) and NVMe and this
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driver is required to get that functionality up and running.
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config SANDBOX_MBOX
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bool "Enable the sandbox mailbox test driver"
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depends on DM_MAILBOX && SANDBOX
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help
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Enable support for a test mailbox implementation, which simply echos
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back a modified version of any message that is sent.
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config TEGRA_HSP
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bool "Enable Tegra HSP controller support"
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depends on DM_MAILBOX && ARCH_TEGRA
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help
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This enables support for the NVIDIA Tegra HSP Hw module, which
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implements doorbells, mailboxes, semaphores, and shared interrupts.
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config STM32_IPCC
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bool "Enable STM32 IPCC controller support"
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depends on DM_MAILBOX && ARCH_STM32MP
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help
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This enables support for the STM32MP IPCC Hw module, which
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implements doorbells between 2 processors.
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config K3_SEC_PROXY
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bool "Texas Instruments K3 Secure Proxy Driver"
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depends on DM_MAILBOX && ARCH_K3
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help
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An implementation of Secure proxy slave driver for K3 SoCs from
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Texas Instruments. Secure proxy is a communication entity mainly
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used for communication between multiple processors with the SoC.
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Select this driver if your platform has support for this hardware
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block.
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config ZYNQMP_IPI
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bool "Xilinx ZynqMP IPI controller support"
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depends on DM_MAILBOX && ARCH_ZYNQMP
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help
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This enables support for the Xilinx ZynqMP Inter Processor Interrupt
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communication controller.
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endmenu
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