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Refactor ATCSMU (System Management Unit) support by moving it from a
system utility into a dedicated FDT-based HSM driver.
Key changes include:
- Moving the functions in lib/utils/sys/atcsmu.c into the new HSM driver
- Moving hart start and stop operations on AE350 platform into the new
HSM driver
- Converting the assembly-based functions in sleep.S to C code for the
readability
- Updating the ATCWDT200 driver
Signed-off-by: Ben Zong-You Xie <[email protected]>
Signed-off-by: Leo Yu-Chi Liang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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The SiFive TMC0 controls the tile power domains on SiFive platform. The
CPU enters the low power state via the `CEASE` instruction after
configuring the TMC0. Any devices that inside the tile power domain will
be power gated, including the private cache. Therefore flushing the
private cache before entering the low power state.
Co-developed-by: Vincent Chen <[email protected]>
Signed-off-by: Vincent Chen <[email protected]>
Reviewed-by: Cyan Yang <[email protected]>
Signed-off-by: Nick Hu <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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Add code to bring up all 8 cores during OpenSBI initialization so
that the Linux kernel can detect and use all cores properly.
Co-authored-by: Troy Mitchell <[email protected]>
Signed-off-by: Troy Mitchell <[email protected]>
Signed-off-by: Xianbin Zhu <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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For driver subsystems that are not tightly integrated into the OpenSBI
init sequence, it is not important that the drivers are initialized in
any particular order. By putting all of these drivers in one array, they
can all be initialized with a single pass through the devicetree. This
saves about 10 ms of boot time on HiFive Unmatched.
Signed-off-by: Samuel Holland <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The RPMI HSM service group provides set of routine to query and control
power states of a Hart. Add RPMI based Hart State Management (HSM) driver.
Signed-off-by: Subrahmanya Lingappa <[email protected]>
Signed-off-by: Anup Patel <[email protected]>
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The generic platform can have multiple HSM drivers so add a simple
FDT based HSM driver framework.
Signed-off-by: Anup Patel <[email protected]>
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