add fix for full tools and sanitizer

1 files changed, 12 insertions, 1 deletions

diff --git a/src/doc/rustc/src/platform-support/openharmony.md b/src/doc/rustc/src/platform-support/openharmony.md
index 1632f44aeec..5988c468a8b 100644
--- a/src/doc/rustc/src/platform-support/openharmony.md
+++ b/src/doc/rustc/src/platform-support/openharmony.md
@@ -1,6 +1,6 @@
 # `*-unknown-linux-ohos`
 
-**Tier: 2**
+**Tier: 2（with Host Tools）**
 
 * aarch64-unknown-linux-ohos
 * armv7-unknown-linux-ohos
@@ -18,6 +18,17 @@ system.
 - Amanieu d'Antras ([@Amanieu](https://github.com/Amanieu))
 - Lu Binglun ([@lubinglun](https://github.com/lubinglun))
 
+## Requirements
+
+All the ohos targets of Tier 2 with host tools support all extended rust tools.
+(exclude `miri`, the support of `miri` will be added soon)
+
+### Host toolchain
+
+The targets require a reasonably up-to-date OpenHarmony SDK on the host.
+
+The targets support `cargo`, which require [ohos-openssl](https://github.com/ohos-rs/ohos-openssl).
+
 ## Setup
 
 The OpenHarmony SDK doesn't currently support Rust compilation directly, so