rockchip: rk3576: Add SCMI shared memory region to MMU mapping #4
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ya-mouse
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ya-mouse
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alchark
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Why do we need this now and how did it work before without this change (or didn't)? Those should be mentioned in the commit description.
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This was required in order to make enabled SCMI work. We can guard this with such a config.
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Add a 64KB memory region mapping at 0x40100000 for SCMI (System Control and Management Interface) communication between U-Boot and the ARM Trusted Firmware. The region is configured with: - MT_NORMAL_NC (Non-cacheable normal memory) to ensure coherent access between the AP and SCP/firmware - PTE_BLOCK_NON_SHARE to match firmware expectations - PXN/UXN to prevent execution from this memory region This shared memory region is used for SCMI message passing on RK3576 platforms that utilize ARM-FF-A or similar firmware interfaces for clock, power domain, and other system control operations. Change-Id: 9d1957c3-d21f-41de-b9b9-acfcffce4d83 batch-02 Signed-off-by: Anton Burticica <mouse@ya.ru>
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Add a 64KB memory region mapping at 0x40100000 for SCMI (System
Control and Management Interface) communication between U-Boot
and the ARM Trusted Firmware.
The region is configured with:
access between the AP and SCP/firmware
This shared memory region is used for SCMI message passing on RK3576
platforms that utilize ARM-FF-A or similar firmware interfaces for
clock, power domain, and other system control operations.
Change-Id: 9d1957c3-d21f-41de-b9b9-acfcffce4d83 batch-02