soc: silabs: siwx91x: Implement sys_reset()

ragurram26 · jerome-pouiller · henrikbrixandersen · commit b781386e1eb4 · 2025-10-02T14:18:53.000+02:00
siwx91x requires a few specific actions to reboot properly.

[Jérôme: split commits, reword the commit log, fix prototype]

Co-authored-by: Jérôme Pouiller &lt;jerome.pouiller@silabs.com&gt;
Signed-off-by: Jérôme Pouiller &lt;jerome.pouiller@silabs.com&gt;
Signed-off-by: Rahul Gurram &lt;rahul.gurram@silabs.com&gt;
diff --git a/modules/hal_silabs/wiseconnect/CMakeLists.txt b/modules/hal_silabs/wiseconnect/CMakeLists.txt
@@ -48,6 +48,7 @@ zephyr_include_directories(
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/drivers/cmsis_driver/config
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/drivers/cmsis_driver
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/drivers/cmsis_driver/CMSIS/Driver/Include
+  ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/hal/inc
   ${WISECONNECT_DIR}/components/device/silabs/si91x/wireless/ahb_interface/inc
   ${WISECONNECT_DIR}/components/device/silabs/si91x/wireless/firmware_upgrade
 )
@@ -73,6 +74,7 @@ zephyr_library_sources(
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/drivers/unified_api/src/sl_si91x_driver_gpio.c
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/drivers/unified_api/src/sl_si91x_pwm.c
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/drivers/unified_peripheral_drivers/src/sl_si91x_peripheral_gpio.c
+  ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/hal/src/sl_si91x_hal_soc_soft_reset.c
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/core/chip/src/iPMU_prog/iPMU_dotc/ipmu_apis.c
   ${WISECONNECT_DIR}/components/device/silabs/si91x/mcu/core/chip/src/iPMU_prog/iPMU_dotc/rsi_system_config_917.c
 )
diff --git a/soc/silabs/silabs_siwx91x/siwg917/soc.c b/soc/silabs/silabs_siwx91x/siwg917/soc.c
@@ -12,6 +12,7 @@
 #include "em_device.h"
 #include "sli_siwx917_soc.h"
 #include "sl_si91x_power_manager.h"
+#include "sl_si91x_hal_soc_soft_reset.h"
 
 void soc_early_init_hook(void)
 {
@@ -33,6 +34,13 @@ void soc_early_init_hook(void)
 	}
 }
 
+void sys_arch_reboot(int type)
+{
+	ARG_UNUSED(type);
+
+	sl_si91x_soc_nvic_reset();
+}
+
 /* SiWx917's bootloader requires IRQn 32 to hold payload's entry point address. */
 extern void z_arm_reset(void);
 Z_ISR_DECLARE_DIRECT(32, 0, z_arm_reset);

Original file line number	Diff line number	Diff line change
`@@ -12,6 +12,7 @@`
`12`	`12`	`#include "em_device.h"`
`13`	`13`	`#include "sli_siwx917_soc.h"`
`14`	`14`	`#include "sl_si91x_power_manager.h"`
	`15`	`+#include "sl_si91x_hal_soc_soft_reset.h"`
`15`	`16`
`16`	`17`	`void soc_early_init_hook(void)`
`17`	`18`	`{`
`@@ -33,6 +34,13 @@ void soc_early_init_hook(void)`
`33`	`34`	`}`
`34`	`35`	`}`
`35`	`36`
	`37`	`+void sys_arch_reboot(int type)`
	`38`	`+{`
	`39`	`+ ARG_UNUSED(type);`
	`40`	`+`
	`41`	`+ sl_si91x_soc_nvic_reset();`
	`42`	`+}`
	`43`	`+`
`36`	`44`	`/* SiWx917's bootloader requires IRQn 32 to hold payload's entry point address. */`
`37`	`45`	`extern void z_arm_reset(void);`
`38`	`46`	`Z_ISR_DECLARE_DIRECT(32, 0, z_arm_reset);`