rust: add PL011 device model

This commit adds a re-implementation of hw/char/pl011.c in Rust.

How to build:

1. Configure a QEMU build with:
   --enable-system --target-list=aarch64-softmmu --enable-rust
2. Launching a VM with qemu-system-aarch64 should use the Rust version
   of the pl011 device

Co-authored-by: Junjie Mao <junjie.mao@intel.com>
Co-authored-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/6ec1d4fb8db2a1d7ba94c73e65d9770371b7857d.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/rust/hw/char/pl011/README.md b/rust/hw/char/pl011/README.md
new file mode 100644
index 0000000000..cd7dea3163
--- /dev/null
+++ b/rust/hw/char/pl011/README.md
@@ -0,0 +1,31 @@
+# PL011 QEMU Device Model
+
+This library implements a device model for the PrimeCell® UART (PL011)
+device in QEMU.
+
+## Build static lib
+
+Host build target must be explicitly specified:
+
+```sh
+cargo build --target x86_64-unknown-linux-gnu
+```
+
+Replace host target triplet if necessary.
+
+## Generate Rust documentation
+
+To generate docs for this crate, including private items:
+
+```sh
+cargo doc --no-deps --document-private-items --target x86_64-unknown-linux-gnu
+```
+
+To include direct dependencies like `bilge` (bitmaps for register types):
+
+```sh
+cargo tree --depth 1 -e normal --prefix none \
+ | cut -d' ' -f1 \
+ | xargs printf -- '-p %s\n' \
+ | xargs cargo doc --no-deps --document-private-items --target x86_64-unknown-linux-gnu
+```