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lib/utils: Add RPMI messaging protocol and shared memory transport support

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The RISC-V Platform Management Interface (RPMI) defines a messaging protocol
and shared memory based transport for bi-directional communication with an
on-chip or external microcontroller.

To support RPMI in OpenSBI, add:
1) The RPMI messaging protocol defines and helper macros
2) A FDT mailbox driver for the RPMI shared memory transport

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Co-developed-by: Subrahmanya Lingappa <slingappa@ventanamicro.com>
Signed-off-by: Subrahmanya Lingappa <slingappa@ventanamicro.com>
Co-developed-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
This commit is contained in:
Rahul Pathak
2024-08-06 10:07:33 +05:30
committed by Anup Patel
parent 2244a34f0d
commit 91f46fb47e
7 changed files with 1173 additions and 0 deletions
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platform/generic/configs/defconfig
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@@ -20,6 +20,9 @@ CONFIG_FDT_IRQCHIP=y
CONFIG_FDT_IRQCHIP_APLIC=y
CONFIG_FDT_IRQCHIP_IMSIC=y
CONFIG_FDT_IRQCHIP_PLIC=y
CONFIG_FDT_MAILBOX=y
CONFIG_RPMI_MAILBOX=y
CONFIG_FDT_MAILBOX_RPMI_SHMEM=y
CONFIG_FDT_REGMAP=y
CONFIG_FDT_REGMAP_SYSCON=y
CONFIG_FDT_RESET=y