[PATCH 1/2] arm: mach-k3: Detect and print reset reason
Wadim Egorov
w.egorov at phytec.de
Thu May 15 13:15:53 CEST 2025
Call get_reset_reason() during CPU info output and display the result
if the SoC provides the implementation. This helps in debugging by
providing context on the last system reset reason.
Signed-off-by: Wadim Egorov <w.egorov at phytec.de>
---
arch/arm/mach-k3/common.c | 10 ++++++++++
arch/arm/mach-k3/include/mach/hardware.h | 1 +
2 files changed, 11 insertions(+)
diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index fc230f180d0..0323001d6d3 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -175,11 +175,17 @@ static const char *get_device_type_name(void)
}
}
+__weak const char *get_reset_reason(void)
+{
+ return NULL;
+}
+
int print_cpuinfo(void)
{
struct udevice *soc;
char name[64];
int ret;
+ const char *reset_reason;
printf("SoC: ");
@@ -201,6 +207,10 @@ int print_cpuinfo(void)
printf("%s\n", get_device_type_name());
+ reset_reason = get_reset_reason();
+ if (reset_reason)
+ printf("Reset reason: %s\n", reset_reason);
+
return 0;
}
#endif
diff --git a/arch/arm/mach-k3/include/mach/hardware.h b/arch/arm/mach-k3/include/mach/hardware.h
index fc7bee4d00b..81b5f1fa45e 100644
--- a/arch/arm/mach-k3/include/mach/hardware.h
+++ b/arch/arm/mach-k3/include/mach/hardware.h
@@ -125,4 +125,5 @@ struct rom_extended_boot_data {
};
u32 get_boot_device(void);
+const char *get_reset_reason(void);
#endif /* _ASM_ARCH_HARDWARE_H_ */
--
2.34.1
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