From 872208fdf810c2e444f6012b5053c8bfb5a75a16 Mon Sep 17 00:00:00 2001
From: wanggang26 <wanggang26@xiaomi.com>
Date: Fri, 14 Jun 2024 11:04:39 +0800
Subject: [PATCH] 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 <wanggang26@xiaomi.com>
---
 boards/Kconfig         |  8 ++++++++
 boards/boardctl.c      | 16 ++++++++++++++++
 include/nuttx/board.h  | 15 +++++++++++++++
 include/sys/boardctl.h |  3 ++-
 4 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/boards/Kconfig b/boards/Kconfig
index 090a0aa602..8d506d04e1 100644
--- 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
index 788de6a6d5..388e1e00a7 100644
--- 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
index a937bc437b..9c64d53909 100644
--- 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
index c5daa3895a..0688ec7aed 100644
--- 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