sync branch rt-smart. (#6641)

* Synchronize the code of the rt mart branch to the master branch.
  * TTY device
  * Add lwP code from rt-smart
  * Add vnode in DFS, but DFS will be re-write for rt-smart
  * There are three libcpu for rt-smart:
    * arm/cortex-a, arm/aarch64
    * riscv64

Co-authored-by: Rbb666 <[email protected]>
Co-authored-by: zhkag <[email protected]>

1 files changed, 30 insertions, 10 deletions

diff --git a/include/rthw.h b/include/rthw.h
index b55d12e2a7..3c1e743279 100644
--- a/include/rthw.h
+++ b/include/rthw.h
@@ -12,6 +12,7 @@
  * 2017-10-17     Hichard      add some macros
  * 2018-11-17     Jesven       add rt_hw_spinlock_t
  *                             add smp support
+ * 2019-05-18     Bernard      add empty definition for not enable cache case
  */
 
 #ifndef __RT_HW_H__
@@ -52,6 +53,7 @@ enum RT_HW_CACHE_OPS
 /*
  * CPU interfaces
  */
+#ifdef RT_USING_CACHE
 void rt_hw_cpu_icache_enable(void);
 void rt_hw_cpu_icache_disable(void);
 rt_base_t rt_hw_cpu_icache_status(void);
@@ -61,6 +63,20 @@ void rt_hw_cpu_dcache_enable(void);
 void rt_hw_cpu_dcache_disable(void);
 rt_base_t rt_hw_cpu_dcache_status(void);
 void rt_hw_cpu_dcache_ops(int ops, void* addr, int size);
+#else
+
+/* define cache ops as empty */
+#define rt_hw_cpu_icache_enable(...)
+#define rt_hw_cpu_icache_disable(...)
+#define rt_hw_cpu_icache_ops(...)
+#define rt_hw_cpu_dcache_enable(...)
+#define rt_hw_cpu_dcache_disable(...)
+#define rt_hw_cpu_dcache_ops(...)
+
+#define rt_hw_cpu_icache_status(...) 0
+#define rt_hw_cpu_dcache_status(...) 0
+
+#endif
 
 void rt_hw_cpu_reset(void);
 void rt_hw_cpu_shutdown(void);
@@ -119,7 +135,7 @@ void rt_hw_context_switch_interrupt(void *context, rt_ubase_t from, rt_ubase_t t
 #else
 void rt_hw_context_switch(rt_ubase_t from, rt_ubase_t to);
 void rt_hw_context_switch_to(rt_ubase_t to);
-void rt_hw_context_switch_interrupt(rt_ubase_t from, rt_ubase_t to);
+void rt_hw_context_switch_interrupt(rt_ubase_t from, rt_ubase_t to, rt_thread_t from_thread, rt_thread_t to_thread);
 #endif /*RT_USING_SMP*/
 
 void rt_hw_console_output(const char *str);
@@ -138,13 +154,7 @@ void rt_hw_exception_install(rt_err_t (*exception_handle)(void *context));
 void rt_hw_us_delay(rt_uint32_t us);
 
 #ifdef RT_USING_SMP
-typedef union {
-    unsigned long slock;
-    struct __arch_tickets {
-        unsigned short owner;
-        unsigned short next;
-    } tickets;
-} rt_hw_spinlock_t;
+#include <cpuport.h> /* for spinlock from arch */
 
 struct rt_spinlock
 {
@@ -184,12 +194,22 @@ void rt_hw_secondary_cpu_up(void);
 void rt_hw_secondary_cpu_idle_exec(void);
 #else
 
-#define RT_DEFINE_SPINLOCK(x)
-#define RT_DECLARE_SPINLOCK(x)    rt_ubase_t x
+#define RT_DEFINE_SPINLOCK(x)    rt_ubase_t x
+#define RT_DECLARE_SPINLOCK(x)
 
 #define rt_hw_spin_lock(lock)     *(lock) = rt_hw_interrupt_disable()
 #define rt_hw_spin_unlock(lock)   rt_hw_interrupt_enable(*(lock))
 
+typedef int rt_spinlock_t;
+
+#endif
+
+#ifdef RT_USING_CACHE
+#include <cpuport.h>
+#else
+#define rt_hw_isb()
+#define rt_hw_dmb()
+#define rt_hw_dsb()
 #endif
 
 #ifdef __cplusplus