boardctl: add board control api to start slave core

This interface may be used by application specific logic to start specified slave cpu core under the pseudo AMP case which is different with armv7-a/armv8-a SMP. Support for this function is required by board-level logic if CONFIG_BOARDCTL_START_CPU is selected. Signed-off-by: wanggang26 <[email protected]>
gneworld · Sep 16, 2024 · 872208f · 872208f
1 parent d259138
commit 872208f
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diff --git a/boards/Kconfig b/boards/Kconfig
@@ -4828,6 +4828,14 @@ config BOARDCTL_IRQ_AFFINITY
 	---help---
 		Enables support for Set an IRQ affinity to CPUs by software.
 
+config BOARDCTL_START_CPU
+	bool "Start slave cpu"
+	default n
+	---help---
+		Enables support for the BOARDIOC_START_CPU boardctl() command.
+		Architecture specific logic must provide the board_start_cpu()
+		interface.
+
 config BOARDCTL_IOCTL
 	bool "Board-specific boardctl() commands"
 	default n

diff --git a/boards/boardctl.c b/boards/boardctl.c
@@ -886,6 +886,22 @@ int boardctl(unsigned int cmd, uintptr_t arg)
         break;
 #endif
 
+#ifdef CONFIG_BOARDCTL_START_CPU
+      /* CMD:           BOARDIOC_START_CPU
+       * DESCRIPTION:   Start specified slave core by master core
+       * ARG:           Integer value for cpu core id.
+       * CONFIGURATION: CONFIG_BOARDCTL_START_CPU
+       * DEPENDENCIES:  Board logic must provide the
+       *                board_start_cpu() interface.
+       */
+
+      case BOARDIOC_START_CPU:
+        {
+          ret = board_start_cpu((int)arg);
+        }
+        break;
+#endif
+
        default:
          {
 #ifdef CONFIG_BOARDCTL_IOCTL

diff --git a/include/nuttx/board.h b/include/nuttx/board.h
@@ -855,6 +855,21 @@ void board_init_rngseed(void);
 int board_reset_cause(FAR struct boardioc_reset_cause_s *cause);
 #endif
 
+/****************************************************************************
+ * Name: board_start_cpu
+ *
+ * Description:
+ *   This interface may be used by application specific logic to start
+ *   specified slave cpu core under the pseudo AMP case which is different
+ *   with armv7-a/armv8-a SMP. Support for this function is required by
+ *   board-level logic if CONFIG_BOARDCTL_START_CPU is selected.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARDCTL_START_CPU
+int board_start_cpu(int cpuid);
+#endif
+
 #undef EXTERN
 #ifdef __cplusplus
 }

diff --git a/include/sys/boardctl.h b/include/sys/boardctl.h
@@ -213,6 +213,7 @@
 #define BOARDIOC_BOOT_IMAGE        _BOARDIOC(0x0014)
 #define BOARDIOC_RESET_CAUSE       _BOARDIOC(0x0015)
 #define BOARDIOC_IRQ_AFFINITY      _BOARDIOC(0x0016)
+#define BOARDIOC_START_CPU         _BOARDIOC(0x0017)
 
 /* If CONFIG_BOARDCTL_IOCTL=y, then board-specific commands will be support.
  * In this case, all commands not recognized by boardctl() will be forwarded
@@ -221,7 +222,7 @@
  * User defined board commands may begin with this value:
  */
 
-#define BOARDIOC_USER              _BOARDIOC(0x0017)
+#define BOARDIOC_USER              _BOARDIOC(0x0018)
 
 /****************************************************************************
  * Public Type Definitions