[PATCH v6 0/8] Transition Nova Core to TLV firmare images

This patch set transitions nova-core to use the new "TLV" firmware image
files, instead of the ones that Nouveau uses.

A prerequisite patch "rust: error: add remaining error codes" is required
to compile. [1]

The current r570.144 images are a mix of binary headers and ELF files that
are cumbersome to parse in Rust.  There's a significant amount of code
that just reads in a struct, extracts some offset, and uses it to find
another struct, only to have nova-core use just a few fields.

The new format uses a sequence of tag/length/value fields that can be
iterated over.  The script that generates the TLV files,
extract-firmware-nova.py, does the extra work to find the specific metadata
needed by Nova and packages each one separately.

The TLV versions of r570.144 can be found here:

	https://github.com/ttabi/linux-firmware-nova

along with instructions on how to install them.  We are not planning on
submitting these images to linux-firmware.  Rather, if this patchset
is accepted upstream, I expect the small handful of people who are
actually working on Nova to grab and install these images, which needs
to be done only once.

There are still opportunities for improvement.  For example, I would like
to get rid of more GPU-specific code, especially the GA100 quirks.

[1] https://lore.kernel.org/rust-for-linux/[email protected]/

v6:
1) Fixed s/os_code_offset/0 in booter
2) Improve Vec::zeroed() comments
3) Corrected some imports
4) Rebased onto drm-rust-next
5) Clarified TLV booleans and strings

Timur Tabi (8):
  rust: alloc: add Vec::zeroed method
  rust: firmware: add request_into_buf()
  gpu: nova-core: add TLV parser for firmware files
  gpu: nova-core: transition booter_load to TLV images
  gpu: nova-core: transition gsp to TLV images
  gpu: nova-core: transition gen_bootloader to TLV images
  gpu: nova-core: transition fsp to TLV images
  gpu: nova-core: update firmware module info for TLV images

 Documentation/gpu/nova/core/tlv.rst           | 184 ++++++++++
 Documentation/gpu/nova/index.rst              |   1 +
 drivers/gpu/nova-core/firmware.rs             | 295 +---------------
 drivers/gpu/nova-core/firmware/booter.rs      | 331 +++---------------
 drivers/gpu/nova-core/firmware/fsp.rs         |  88 +++--
 .../nova-core/firmware/fwsec/bootloader.rs    |  75 +---
 drivers/gpu/nova-core/firmware/gsp.rs         |  61 ++--
 drivers/gpu/nova-core/firmware/riscv.rs       |  75 +---
 drivers/gpu/nova-core/firmware/tlv.rs         | 265 ++++++++++++++
 drivers/gpu/nova-core/fsp.rs                  |  11 +-
 drivers/gpu/nova-core/gsp/boot.rs             |   7 +-
 drivers/gpu/nova-core/gsp/hal.rs              |   8 +-
 drivers/gpu/nova-core/gsp/hal/tu102.rs        |  13 +-
 rust/kernel/alloc/kvec.rs                     |  27 ++
 rust/kernel/firmware.rs                       |  48 ++-
 15 files changed, 700 insertions(+), 789 deletions(-)
 create mode 100644 Documentation/gpu/nova/core/tlv.rst
 create mode 100644 drivers/gpu/nova-core/firmware/tlv.rs


base-commit: 0755a4e3e809610a14befc9ad28d35e2e460da68
prerequisite-patch-id: 92c2d027299f0bc35d20918668f6874712d12f28
-- 
2.54.0