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-rw-r--r--docs/platform/qemu_sifive_u.md8
1 files changed, 8 insertions, 0 deletions
diff --git a/docs/platform/qemu_sifive_u.md b/docs/platform/qemu_sifive_u.md
index 48b30e4..b5c4f0e 100644
--- a/docs/platform/qemu_sifive_u.md
+++ b/docs/platform/qemu_sifive_u.md
@@ -7,6 +7,14 @@ platform.
To build this platform specific library and firmwares, provide the
*PLATFORM=qemu/sifive_u* parameter to the top level `make` command line.
+Note with QEMU v4.2 release, the QEMU *sifive_u* machine has been updated to
+closely match the SiFive HiFive Unleashed hardware and can therefore run the
+same firmware as what gets loaded onto the board, and OpenSBI's *qemu/sifive_u*
+platform should only be used with QEMU v4.1 release or before.
+
+The special *qemu/sifive_u* platform support will be dropped in the future
+OpenSBI release.
+
Platform Options
----------------