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new 2c940407b5c docs: rv-virt: document elf, libcxx64 and virtual LEDs
2c940407b5c is described below
commit 2c940407b5c4e16125015a8ced0c1f97665451cc
Author: arnavsharma990 <[email protected]>
AuthorDate: Thu Sep 17 19:48:54 2026 +0530
docs: rv-virt: document elf, libcxx64 and virtual LEDs
Document the purpose of the rv-virt elf and libcxx64 configurations and
clarify that the LEDs used by leds64 are virtual/log-only and are not backed by
a NuttX GPIO controller.
This addresses issue #20174.
---
.../platforms/risc-v/qemu-rv/boards/rv-virt/index.rst | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Documentation/platforms/risc-v/qemu-rv/boards/rv-virt/index.rst
b/Documentation/platforms/risc-v/qemu-rv/boards/rv-virt/index.rst
index df2e8f17ac8..fa418ef7a48 100644
--- a/Documentation/platforms/risc-v/qemu-rv/boards/rv-virt/index.rst
+++ b/Documentation/platforms/risc-v/qemu-rv/boards/rv-virt/index.rst
@@ -143,6 +143,21 @@ To run it with QEMU, use the following command::
-mon chardev=con,mode=readline \
-bios none -kernel nuttx
+elf
+---
+
+This configuration uses ``apps/examples/elf`` in order to test the ELF loader
+on 32-bit RISC-V. It boots directly into the ELF example and does not provide
+the NuttShell (NSH).
+
+libcxx64
+--------
+
+This configuration provides the NuttShell (NSH) with the C++ standard library
+on 64-bit RISC-V. The C++ test at ``apps/testing/cxxtest`` can be run with::
+
+ nsh> cxxtest
+
lvgl64_vector
-------------
@@ -295,6 +310,10 @@ leds64
Similar to the `nsh64`_ configuration, but with User LEDs support for 64-bit
RISC-V.
+The LEDs are implemented as virtual LEDs and their state is reported through
+the system log. The current ``rv-virt`` implementation does not provide
+a NuttX GPIO controller for these LEDs.
+
leds64_rust
-----------
