GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/arm/cpu/arm926ejs/spear/reset.c

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2009
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_syscntl.h>
+
+void reset_cpu(ulong ignored)
+{
+	struct syscntl_regs *syscntl_regs_p =
+	    (struct syscntl_regs *)CONFIG_SPEAR_SYSCNTLBASE;
+
+	printf("System is going to reboot ...\n");
+
+	/*
+	 * This 1 second delay will allow the above message
+	 * to be printed before reset
+	 */
+	udelay((1000 * 1000));
+
+	/* Going into slow mode before resetting SOC */
+	writel(0x02, &syscntl_regs_p->scctrl);
+
+	/*
+	 * Writing any value to the system status register will
+	 * reset the SoC
+	 */
+	writel(0x00, &syscntl_regs_p->scsysstat);
+
+	/* system will restart */
+	while (1)
+		;
+}