| Age | Commit message (Collapse) | Author |
|---|
|
Instances of the Falcon microcontroller appear in modern Nvidia GPUs and
are crucial to the GPU boot process. Document some concepts which will
make nova-core boot code easier to digest. All the information is
derived from public sources such as public documents, OpenRM and Nouveau
code.
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250708-nova-docs-v4-8-9d188772c4c7@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
Add explanation of fwsec with diagrams. This helps clarify how the
nova-core falcon boot works.
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250708-nova-docs-v4-7-9d188772c4c7@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
devinit is mentioned in the code. This patch explains it so it is clear
what it does. devinit is not only essential at boot-time, but also at
runtime due to suspend-resume and things like re-clocking.
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250708-nova-docs-v4-6-9d188772c4c7@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
Add detailed explanation and block diagrams of the layout of the vBIOS
on Nvidia GPUs. This is important to understand how nova-core boots an
Nvidia GPU.
[ Applied Timur Tabi's feedback on providing link to BIT documentation. ]
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250708-nova-docs-v4-5-9d188772c4c7@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
A few new dependencies are required to remove some of the TODO items:
- A way to safely convert from byte slices to types implementing
`FromBytes`,
- A way to obtain slices and write into a `CoherentAllocation`,
- Several improvements to the `register!()` macro,
- Alignment operations to powers of two, and an equivalent to the C
`fls`,
- Support for `xa_alloc` in the XAlloc bindings.
Some items have also become obsolete:
- The auxiliary bus abstractions have been implemented and are in use,
- The ELF utilities are not considered for being part of the core kernel
bindings anymore.
- VBIOS, falcon and GPU timer have been completed.
We now have quite a few TODO entries in the code, so annotate them with
a 4 letter code representing the corresponding task in `todo.rst`. This
allows to easily find which part of the code corresponds to a given
entry (and conversely).
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250619-nova-frts-v6-24-ecf41ef99252@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
Add the register!() macro, which defines a given register's layout and
provide bit-field accessors with a way to convert them to a given type.
This macro will allow us to make clear definitions of the registers and
manipulate their fields safely.
The long-term goal is to eventually move it to the kernel crate so it
can be used by other drivers as well, but it was agreed to first land it
into nova-core and make it mature there.
To illustrate its usage, use it to define the layout for the Boot0
(renamed to NV_PMC_BOOT_0 to match OpenRM's naming scheme) and take
advantage of its accessors.
Suggested-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250507-nova-frts-v3-5-fcb02749754d@nvidia.com
[ Fix typo in commit message. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
The requested Vec methods have been implemented thus, remove
the completed item from the nova task list.
Link: https://lore.kernel.org/r/20250316111644.154602-4-andrewjballance@gmail.com
Signed-off-by: Andrew Ballance <andrewjballance@gmail.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
|
Add the initial documentation of the Nova project.
The initial project documentation consists out of a brief introduction
of the project, as well as project guidelines both general and nova-core
specific and a task list for nova-core specifically.
The task list is divided into tasks for general Rust infrastructure
required by the project, tasks regarding GSP enablement and firmware
abstraction, general GPU driver tasks as well as tasks related to
external API design and test infrastructure.
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://lore.kernel.org/r/20250306222336.23482-6-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
