HAL: Add a get_capabilities() function to ResetReason API

TESTS/host_tests/reset_reason.py

@@ -19,7 +19,7 @@
 
 DEFAULT_SYNC_DELAY = 4.0
 
-MSG_VALUE_WATCHDOG_PRESENT = 'wdg_present'
+MSG_VALUE_WATCHDOG_PRESENT = 1
 MSG_VALUE_DUMMY = '0'
 MSG_VALUE_RESET_REASON_GET = 'get'
 MSG_VALUE_RESET_REASON_CLEAR = 'clear'
@@ -66,6 +66,7 @@ class ResetReasonTest(BaseHostTest):
 
     def __init__(self):
         super(ResetReasonTest, self).__init__()
+        self.device_reasons = None
         self.device_has_watchdog = None
         self.raw_reset_reasons = set()
         self.sync_delay = DEFAULT_SYNC_DELAY
@@ -85,10 +86,13 @@ def setup(self):
     def cb_device_ready(self, key, value, timestamp):
         """Request a raw value of the reset_reason register.
 
-        Additionally, save the device's watchdog status on the first call.
+        Additionally, save the device's reset_reason capabilities
+        and the watchdog status on the first call.
         """
-        if self.device_has_watchdog is None:
-            self.device_has_watchdog = (value == MSG_VALUE_WATCHDOG_PRESENT)
+        if self.device_reasons is None:
+            reasons, wdg_status = (int(i, base=16) for i in value.split(','))
+            self.device_has_watchdog = (wdg_status == MSG_VALUE_WATCHDOG_PRESENT)
+            self.device_reasons = [k for k, v in RESET_REASONS.items() if (reasons & 1 << int(v))]
         self.send_kv(MSG_KEY_RESET_REASON_RAW, MSG_VALUE_RESET_REASON_GET)
 
     def cb_reset_reason_raw(self, key, value, timestamp):
@@ -133,35 +137,45 @@ def test_steps(self):
         __ignored_clear_ack = yield
 
         # Request a NVIC_SystemReset() call.
-        self.send_kv(MSG_KEY_DEVICE_RESET, MSG_VALUE_DEVICE_RESET_NVIC)
-        __ignored_reset_ack = yield
-        time.sleep(self.sync_delay)
-        self.send_kv(MSG_KEY_SYNC, MSG_VALUE_DUMMY)
-        reset_reason = yield
-        raise_if_different(RESET_REASONS['SOFTWARE'], reset_reason, 'Wrong reset reason. ')
-        self.send_kv(MSG_KEY_RESET_REASON, MSG_VALUE_RESET_REASON_CLEAR)
-        __ignored_clear_ack = yield
+        expected_reason = 'SOFTWARE'
+        if expected_reason not in self.device_reasons:
+            self.log('Skipping the {} reset reason -- not supported.'.format(expected_reason))
+        else:
+            # Request a NVIC_SystemReset() call.
+            self.send_kv(MSG_KEY_DEVICE_RESET, MSG_VALUE_DEVICE_RESET_NVIC)
+            __ignored_reset_ack = yield
+            time.sleep(self.sync_delay)
+            self.send_kv(MSG_KEY_SYNC, MSG_VALUE_DUMMY)
+            reset_reason = yield
+            raise_if_different(RESET_REASONS[expected_reason], reset_reason, 'Wrong reset reason. ')
+            self.send_kv(MSG_KEY_RESET_REASON, MSG_VALUE_RESET_REASON_CLEAR)
+            __ignored_clear_ack = yield
 
         # Reset the device using DAP.
-        self.reset()
-        __ignored_reset_ack = yield  # 'reset_complete'
-        time.sleep(self.sync_delay)
-        self.send_kv(MSG_KEY_SYNC, MSG_VALUE_DUMMY)
-        reset_reason = yield
-        raise_if_different(RESET_REASONS['PIN_RESET'], reset_reason, 'Wrong reset reason. ')
-        self.send_kv(MSG_KEY_RESET_REASON, MSG_VALUE_RESET_REASON_CLEAR)
-        __ignored_clear_ack = yield
+        expected_reason = 'PIN_RESET'
+        if expected_reason not in self.device_reasons:
+            self.log('Skipping the {} reset reason -- not supported.'.format(expected_reason))
+        else:
+            self.reset()
+            __ignored_reset_ack = yield  # 'reset_complete'
+            time.sleep(self.sync_delay)
+            self.send_kv(MSG_KEY_SYNC, MSG_VALUE_DUMMY)
+            reset_reason = yield
+            raise_if_different(RESET_REASONS[expected_reason], reset_reason, 'Wrong reset reason. ')
+            self.send_kv(MSG_KEY_RESET_REASON, MSG_VALUE_RESET_REASON_CLEAR)
+            __ignored_clear_ack = yield
 
         # Start a watchdog timer and wait for it to reset the device.
-        if not self.device_has_watchdog:
-            self.log('DUT does not have a watchdog. Skipping this reset reason.')
+        expected_reason = 'WATCHDOG'
+        if expected_reason not in self.device_reasons or not self.device_has_watchdog:
+            self.log('Skipping the {} reset reason -- not supported.'.format(expected_reason))
         else:
             self.send_kv(MSG_KEY_DEVICE_RESET, MSG_VALUE_DEVICE_RESET_WATCHDOG)
             __ignored_reset_ack = yield
             time.sleep(self.sync_delay)
             self.send_kv(MSG_KEY_SYNC, MSG_VALUE_DUMMY)
             reset_reason = yield
-            raise_if_different(RESET_REASONS['WATCHDOG'], reset_reason, 'Wrong reset reason. ')
+            raise_if_different(RESET_REASONS[expected_reason], reset_reason, 'Wrong reset reason. ')
 
         # The sequence is correct -- test passed.
         yield True

TESTS/mbed_drivers/reset_reason/main.cpp

@@ -25,13 +25,11 @@
 #include "mbed.h"
 
 #if DEVICE_WATCHDOG
-#include "hal/watchdog_api.h"
-
-#define MSG_VALUE_WATCHDOG_STATUS "wdg_present"
-#define WDG_TIMEOUT_MS 50UL
-
+#   include "hal/watchdog_api.h"
+#   define MSG_VALUE_WATCHDOG_STATUS 1
+#   define WDG_TIMEOUT_MS 50UL
 #else
-#define MSG_VALUE_WATCHDOG_STATUS "no_wdg"
+#   define MSG_VALUE_WATCHDOG_STATUS 0
 #endif
 
 #define MSG_VALUE_DUMMY "0"
@@ -119,8 +117,18 @@ static cmd_status_t handle_command(const char *key, const char *value)
 
 void test_reset_reason()
 {
-    // Report readiness and watchdog status.
-    greentea_send_kv(MSG_KEY_DEVICE_READY, MSG_VALUE_WATCHDOG_STATUS);
+    reset_reason_capabilities_t rrcap = {};
+    hal_reset_reason_get_capabilities(&rrcap);
+    char msg_value[11];
+    int str_len = snprintf(msg_value, sizeof msg_value, "%08lx,%01x", rrcap.reasons, MSG_VALUE_WATCHDOG_STATUS);
+    if (str_len != (sizeof msg_value) - 1) {
+        printf("Failed to compose a value string to be sent to host.");
+        GREENTEA_TESTSUITE_RESULT(0);
+        return;
+    }
+
+    // Report readiness, capabilities and watchdog status.
+    greentea_send_kv(MSG_KEY_DEVICE_READY, msg_value);
 
     cmd_status_t cmd_status = CMD_STATUS_CONTINUE;
     static char _key[MSG_KEY_LEN + 1] = { };

TESTS/mbed_hal/reset_reason/main.cpp

@@ -25,13 +25,11 @@
 #include "mbed.h"
 
 #if DEVICE_WATCHDOG
-#include "hal/watchdog_api.h"
-
-#define MSG_VALUE_WATCHDOG_STATUS "wdg_present"
-#define WDG_TIMEOUT_MS 50UL
-
+#   include "hal/watchdog_api.h"
+#   define MSG_VALUE_WATCHDOG_STATUS 1
+#   define WDG_TIMEOUT_MS 50UL
 #else
-#define MSG_VALUE_WATCHDOG_STATUS "no_wdg"
+#   define MSG_VALUE_WATCHDOG_STATUS 0
 #endif
 
 #define MSG_VALUE_DUMMY "0"
@@ -126,8 +124,18 @@ static cmd_status_t handle_command(const char *key, const char *value)
 
 void test_reset_reason()
 {
-    // Report readiness and watchdog status.
-    greentea_send_kv(MSG_KEY_DEVICE_READY, MSG_VALUE_WATCHDOG_STATUS);
+    reset_reason_capabilities_t rrcap = {};
+    hal_reset_reason_get_capabilities(&rrcap);
+    char msg_value[11];
+    int str_len = snprintf(msg_value, sizeof msg_value, "%08lx,%01x", rrcap.reasons, MSG_VALUE_WATCHDOG_STATUS);
+    if (str_len != (sizeof msg_value) - 1) {
+        printf("Failed to compose a value string to be sent to host.");
+        GREENTEA_TESTSUITE_RESULT(0);
+        return;
+    }
+
+    // Report readiness, capabilities and watchdog status.
+    greentea_send_kv(MSG_KEY_DEVICE_READY, msg_value);
 
     cmd_status_t cmd_status = CMD_STATUS_CONTINUE;
     static char _key[MSG_KEY_LEN + 1] = { };

hal/mbed_compat.c

@@ -19,6 +19,7 @@
 #include "i2c_api.h"
 #include "spi_api.h"
 #include "gpio_api.h"
+#include "reset_reason_api.h"
 #include "mbed_toolchain.h"
 
 // To be re-implemented in the target layer if required
@@ -90,4 +91,15 @@ MBED_WEAK void spi_get_capabilities(PinName ssel, bool slave, spi_capabilities_t
     }
 }
 
-#endif
+#endif
+
+#if DEVICE_RESET_REASON
+// To be re-implemented in the target layer if required
+MBED_WEAK void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = (1 << RESET_REASON_PIN_RESET) | (1 << RESET_REASON_SOFTWARE);
+#if DEVICE_WATCHDOG
+    cap->reasons |= 1 << RESET_REASON_WATCHDOG;
+#endif
+}
+#endif

hal/reset_reason_api.h

@@ -41,6 +41,8 @@ extern "C" {
  * some other part of the application may have cleared the value. Therefore,
  * though there may have been a reset reason in the registers when the system
  * started, the reason may not be available when the user comes to check it.
+ * * The function ::hal_reset_reason_get_capabilities fills the given
+ * `reset_reason_capabilities_t` instance.
  *
  * # Undefined behavior
  * * There is no guarantee that the function ::hal_reset_reason_get will
@@ -88,6 +90,12 @@ typedef enum {
     RESET_REASON_UNKNOWN         /**< Unknown or unreadable reset reason **/
 } reset_reason_t;
 
+/** Reset reason capabilities of the platform
+ */
+typedef struct {
+    uint32_t reasons; /**< Supported reset reasons. Each bit represents a corresponding reset_reason_t value.**/
+} reset_reason_capabilities_t;
+
 /** Fetch the reset reason for the last system reset.
  *
  * This function must return the contents of the system reset reason registers
@@ -137,6 +145,10 @@ uint32_t hal_reset_reason_get_raw(void);
  */
 void hal_reset_reason_clear(void);
 
+/** Fill the given reset_reason_capabilities_t instance according to platform capabilities.
+ */
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap);
+
 /**@}*/
 
 #ifdef __cplusplus

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/reset_reason.c

@@ -105,4 +105,23 @@ void hal_reset_reason_clear(void)
 #endif
 }
 
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_POWER_ON;
+    cap->reasons |= 1 << RESET_REASON_BROWN_OUT;
+    cap->reasons |= 1 << RESET_REASON_WATCHDOG;
+    cap->reasons |= 1 << RESET_REASON_PIN_RESET;
+    cap->reasons |= 1 << RESET_REASON_SOFTWARE;
+
+#if (defined(FSL_FEATURE_RCM_HAS_WAKEUP) && FSL_FEATURE_RCM_HAS_WAKEUP) || \
+    (defined(FSL_FEATURE_RCM_HAS_LOC) && FSL_FEATURE_RCM_HAS_LOC) || \
+    (defined(FSL_FEATURE_RCM_HAS_LOL) && FSL_FEATURE_RCM_HAS_LOL) || \
+    (defined(FSL_FEATURE_RCM_HAS_JTAG) && FSL_FEATURE_RCM_HAS_JTAG) || \
+    (defined(FSL_FEATURE_RCM_HAS_MDM_AP) && FSL_FEATURE_RCM_HAS_MDM_AP) || \
+    (defined(FSL_FEATURE_RCM_HAS_EZPORT) && FSL_FEATURE_RCM_HAS_EZPORT)
+    cap->reasons |= 1 << RESET_REASON_PLATFORM;
+#endif
+}
+
 #endif // DEVICE_RESET_REASON

targets/TARGET_TOSHIBA/TARGET_TMPM066/reset_reason_api.c

@@ -86,6 +86,13 @@ reset_reason_t hal_reset_reason_get(void)
     return ret;
 }
 
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_POWER_ON;
+    cap->reasons |= 1 << RESET_REASON_MULTIPLE;
+}
+
 static bool bit_status(uint32_t reg, uint8_t bit_no)
 {
     bool status = false;

targets/TARGET_TOSHIBA/TARGET_TMPM3H6/reset_reason_api.c

@@ -83,6 +83,13 @@ reset_reason_t hal_reset_reason_get(void)
     return ret;
 }
 
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_POWER_ON;
+    cap->reasons |= 1 << RESET_REASON_MULTIPLE;
+}
+
 static bool bit_status(uint32_t reg, uint8_t bit_no)
 {
     bool status = false;

targets/TARGET_TOSHIBA/TARGET_TMPM3HQ/reset_reason_api.c

@@ -83,6 +83,13 @@ reset_reason_t hal_reset_reason_get(void)
     return ret;
 }
 
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_POWER_ON;
+    cap->reasons |= 1 << RESET_REASON_MULTIPLE;
+}
+
 static bool bit_status(uint32_t reg, uint8_t bit_no)
 {
     bool status = false;

targets/TARGET_TOSHIBA/TARGET_TMPM46B/reset_reason_api.c

@@ -66,6 +66,12 @@ reset_reason_t hal_reset_reason_get(void)
     return ret;
 }
 
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_MULTIPLE;
+}
+
 static uint8_t set_bit_count(uint32_t reg)
 {
     uint8_t count = 0;

targets/TARGET_TOSHIBA/TARGET_TMPM4G9/reset_reason_api.c

@@ -88,6 +88,13 @@ reset_reason_t hal_reset_reason_get(void)
     return ret;
 }
 
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_POWER_ON;
+    cap->reasons |= 1 << RESET_REASON_MULTIPLE;
+}
+
 static bool bit_status(uint32_t reg, uint8_t bit_no)
 {
     bool status = false;