1 files changed, 65 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/cpu-info.c b/arch/arm/mach-rockchip/cpu-info.c
new file mode 100644
index 0000000000..4b0e99299a
--- /dev/null
+++ b/arch/arm/mach-rockchip/cpu-info.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * (C) Copyright 2019 Amarula Solutions(India)
+ * Author: Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <linux/err.h>
+
+static char *get_reset_cause(void)
+{
+	struct rockchip_cru *cru = rockchip_get_cru();
+	char *cause = NULL;
+
+	if (IS_ERR(cru))
+		return cause;
+
+	switch (cru->glb_rst_st) {
+	case GLB_POR_RST:
+		cause = "POR";
+		break;
+	case FST_GLB_RST_ST:
+	case SND_GLB_RST_ST:
+		cause = "RST";
+		break;
+	case FST_GLB_TSADC_RST_ST:
+	case SND_GLB_TSADC_RST_ST:
+		cause = "THERMAL";
+		break;
+	case FST_GLB_WDT_RST_ST:
+	case SND_GLB_WDT_RST_ST:
+		cause = "WDOG";
+		break;
+	default:
+		cause = "unknown reset";
+	}
+
+	/**
+	 * reset_reason env is used by rk3288, due to special use case
+	 * to figure it the boot behavior. so keep this as it is.
+	 */
+	env_set("reset_reason", cause);
+
+	/*
+	 * Clear glb_rst_st, so we can determine the last reset cause
+	 * for following resets.
+	 */
+	rk_clrreg(&cru->glb_rst_st, GLB_RST_ST_MASK);
+
+	return cause;
+}
+
+int print_cpuinfo(void)
+{
+	printf("SoC: Rockchip %s\n", CONFIG_SYS_SOC);
+	printf("Reset cause: %s\n", get_reset_cause());
+
+	/* TODO print operating temparature and clock */
+
+	return 0;
+}