From 63e556a858f4d66809b9b3f5705e719c5fe7afe3 Mon Sep 17 00:00:00 2001
From: zhangxinyu <840317537@qq.com>
Date: Wed, 24 May 2023 16:08:51 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E4=B8=80=E4=B8=AA=E9=85=8D?=
 =?UTF-8?q?=E7=BD=AE,=20=E7=94=A8=E6=9D=A5=E8=A1=A8=E7=A4=BAqemu=E7=9A=84c?=
 =?UTF-8?q?pu=E9=A2=91=E7=8E=87?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ch3/os/src/boards/qemu.rs | 3 +++
 ch3/os/src/config.rs      | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 ch3/os/src/boards/qemu.rs

diff --git a/ch3/os/src/boards/qemu.rs b/ch3/os/src/boards/qemu.rs
new file mode 100644
index 0000000..c2f609a
--- /dev/null
+++ b/ch3/os/src/boards/qemu.rs
@@ -0,0 +1,3 @@
+//! Constants used in rCore for qemu
+
+pub const CLOCK_FREQ: usize = 12500000;
diff --git a/ch3/os/src/config.rs b/ch3/os/src/config.rs
index 4fa0a12..aad4690 100644
--- a/ch3/os/src/config.rs
+++ b/ch3/os/src/config.rs
@@ -3,4 +3,6 @@ pub const APP_SIZE_LIMIT: usize = 0x20000;  // app的最大的二进制文件能
 pub const MAX_APP_NUM: usize = 4;  // 支持最大的用户应用数量
 
 pub const USER_STACK_SIZE: usize = 4096 * 2;  // 栈大小为8kb
-pub const KERNEL_STACK_SIZE: usize = 4096 * 2;
\ No newline at end of file
+pub const KERNEL_STACK_SIZE: usize = 4096 * 2;
+
+pub use crate::board::*;
\ No newline at end of file