[nrf fromtree] soc: nordic: uicr: Add support for UICR.SECONDARY.TRIGGER

Add support for UICR.SECONDARY.TRIGGER configuration, which enables
automatic booting of secondary firmware based on specific reset reasons.

This introduces Kconfig options for configuring:
- UICR.SECONDARY.TRIGGER.ENABLE - Enable/disable automatic triggers
- UICR.SECONDARY.TRIGGER.RESETREAS - Bitmask of reset reasons that
  trigger secondary firmware boot

Individual Kconfig options are provided for each reset reason:
- APPLICATIONWDT0/1 - Application core watchdog timeouts
- APPLICATIONLOCKUP - Application core CPU lockup
- RADIOCOREWDT0/1 - Radio core watchdog timeouts
- RADIOCORELOCKUP - Radio core CPU lockup

Signed-off-by: Sebastian Bøe <[email protected]>
(cherry picked from commit 9dc2b61)

Author: SebastianBoe

scripts/ci/check_compliance.py

@@ -1306,6 +1306,13 @@ def check_no_undef_outside_kconfig(self, kconf):
         "GEN_UICR_SECONDARY",
         "GEN_UICR_SECONDARY_GENERATE_PERIPHCONF",
         "GEN_UICR_SECONDARY_PROCESSOR_VALUE",
+        "GEN_UICR_SECONDARY_TRIGGER",
+        "GEN_UICR_SECONDARY_TRIGGER_APPLICATIONLOCKUP",
+        "GEN_UICR_SECONDARY_TRIGGER_APPLICATIONWDT0",
+        "GEN_UICR_SECONDARY_TRIGGER_APPLICATIONWDT1",
+        "GEN_UICR_SECONDARY_TRIGGER_RADIOCORELOCKUP",
+        "GEN_UICR_SECONDARY_TRIGGER_RADIOCOREWDT0",
+        "GEN_UICR_SECONDARY_TRIGGER_RADIOCOREWDT1",
         "GEN_UICR_SECONDARY_WDTSTART",
         "GEN_UICR_SECONDARY_WDTSTART_CRV",
         "GEN_UICR_SECONDARY_WDTSTART_INSTANCE_CODE",

soc/nordic/common/uicr/gen_uicr.py

@@ -487,6 +487,20 @@ def main() -> None:
         type=lambda s: int(s, 0),
         help="Processor to boot for the secondary firmware ",
     )
+    parser.add_argument(
+        "--secondary-trigger",
+        action="store_true",
+        help="Enable UICR.SECONDARY.TRIGGER for automatic secondary firmware boot on reset events",
+    )
+    parser.add_argument(
+        "--secondary-trigger-resetreas",
+        default=0,
+        type=lambda s: int(s, 0),
+        help=(
+            "Bitmask of reset reasons that trigger secondary firmware boot "
+            "(decimal or 0x-prefixed hex)"
+        ),
+    )
     parser.add_argument(
         "--secondary-periphconf-address",
         default=None,
@@ -628,6 +642,11 @@ def main() -> None:
             uicr.SECONDARY.ADDRESS = args.secondary_address
             uicr.SECONDARY.PROCESSOR = args.secondary_processor
 
+            # Handle secondary TRIGGER configuration
+            if args.secondary_trigger:
+                uicr.SECONDARY.TRIGGER.ENABLE = ENABLED_VALUE
+                uicr.SECONDARY.TRIGGER.RESETREAS = args.secondary_trigger_resetreas
+
             # Handle secondary periphconf if provided
             if args.out_secondary_periphconf_hex:
                 secondary_periphconf_combined = extract_and_combine_periphconfs(

soc/nordic/common/uicr/gen_uicr/CMakeLists.txt

@@ -188,6 +188,34 @@ if(CONFIG_GEN_UICR_SECONDARY)
     list(APPEND secondary_args --secondary-wdtstart-crv ${CONFIG_GEN_UICR_SECONDARY_WDTSTART_CRV})
   endif()
 
+  # Handle secondary TRIGGER configuration
+  if(CONFIG_GEN_UICR_SECONDARY_TRIGGER)
+    list(APPEND secondary_args --secondary-trigger)
+
+    # Compute RESETREAS bitmask from individual trigger configs
+    set(resetreas_value 0)
+    if(CONFIG_GEN_UICR_SECONDARY_TRIGGER_APPLICATIONWDT0)
+      math(EXPR resetreas_value "${resetreas_value} + 0x001")
+    endif()
+    if(CONFIG_GEN_UICR_SECONDARY_TRIGGER_APPLICATIONWDT1)
+      math(EXPR resetreas_value "${resetreas_value} + 0x002")
+    endif()
+    if(CONFIG_GEN_UICR_SECONDARY_TRIGGER_APPLICATIONLOCKUP)
+      math(EXPR resetreas_value "${resetreas_value} + 0x008")
+    endif()
+    if(CONFIG_GEN_UICR_SECONDARY_TRIGGER_RADIOCOREWDT0)
+      math(EXPR resetreas_value "${resetreas_value} + 0x020")
+    endif()
+    if(CONFIG_GEN_UICR_SECONDARY_TRIGGER_RADIOCOREWDT1)
+      math(EXPR resetreas_value "${resetreas_value} + 0x040")
+    endif()
+    if(CONFIG_GEN_UICR_SECONDARY_TRIGGER_RADIOCORELOCKUP)
+      math(EXPR resetreas_value "${resetreas_value} + 0x100")
+    endif()
+
+    list(APPEND secondary_args --secondary-trigger-resetreas ${resetreas_value})
+  endif()
+
   if(CONFIG_GEN_UICR_SECONDARY_GENERATE_PERIPHCONF)
     # Compute SECONDARY_PERIPHCONF absolute address and size from this image's devicetree
     compute_partition_address_and_size("secondary_periphconf_partition" SECONDARY_PERIPHCONF_ADDRESS SECONDARY_PERIPHCONF_SIZE)

soc/nordic/common/uicr/gen_uicr/Kconfig

@@ -166,6 +166,48 @@ config GEN_UICR_SECONDARY_PROCESSOR_VALUE
 	default 0xBD2328A8 if GEN_UICR_SECONDARY_PROCESSOR_APPLICATION
 	default 0x1730C77F if GEN_UICR_SECONDARY_PROCESSOR_RADIOCORE
 
+config GEN_UICR_SECONDARY_TRIGGER
+	bool "Enable UICR.SECONDARY.TRIGGER"
+	help
+	  When enabled, configures automatic triggers that cause IronSide SE
+	  to boot the secondary firmware instead of the primary firmware based
+	  on specific reset reasons.
+
+if GEN_UICR_SECONDARY_TRIGGER
+
+config GEN_UICR_SECONDARY_TRIGGER_APPLICATIONWDT0
+	bool "Trigger on Application domain watchdog 0 reset"
+	help
+	  Boot secondary firmware when Application domain watchdog 0 causes a reset.
+
+config GEN_UICR_SECONDARY_TRIGGER_APPLICATIONWDT1
+	bool "Trigger on Application domain watchdog 1 reset"
+	help
+	  Boot secondary firmware when Application domain watchdog 1 causes a reset.
+
+config GEN_UICR_SECONDARY_TRIGGER_APPLICATIONLOCKUP
+	bool "Trigger on Application domain CPU lockup reset"
+	help
+	  Boot secondary firmware when Application domain CPU lockup causes a reset.
+
+config GEN_UICR_SECONDARY_TRIGGER_RADIOCOREWDT0
+	bool "Trigger on Radio core watchdog 0 reset"
+	help
+	  Boot secondary firmware when Radio core watchdog 0 causes a reset.
+
+config GEN_UICR_SECONDARY_TRIGGER_RADIOCOREWDT1
+	bool "Trigger on Radio core watchdog 1 reset"
+	help
+	  Boot secondary firmware when Radio core watchdog 1 causes a reset.
+
+config GEN_UICR_SECONDARY_TRIGGER_RADIOCORELOCKUP
+	bool "Trigger on Radio core CPU lockup reset"
+	help
+	  Boot secondary firmware when Radio core CPU lockup causes a reset.
+
+
+endif # GEN_UICR_SECONDARY_TRIGGER
+
 endif # GEN_UICR_SECONDARY
 
 endmenu