[uboot] create uboot from github:

repo: https://github.com/u-boot/u-boot
	commit: d80bb749fab53da72c4a0e09b8c2d2aaa3103c91

Change-Id: Ie6434426e1ec15bc08bb1832798e371f3fd5fb29

u-boot-2021.10/arch/powerpc/lib/interrupts.c

@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2003
+ * Gleb Natapov <gnatapov@mrv.com>
+ */
+
+#include <common.h>
+#include <irq_func.h>
+#include <asm/processor.h>
+#include <watchdog.h>
+#ifdef CONFIG_LED_STATUS
+#include <status_led.h>
+#endif
+#include <asm/ptrace.h>
+
+#ifndef CONFIG_MPC83XX_TIMER
+#ifndef CONFIG_SYS_WATCHDOG_FREQ
+#define CONFIG_SYS_WATCHDOG_FREQ (CONFIG_SYS_HZ / 2)
+#endif
+
+static unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
+
+static __inline__ unsigned long get_dec (void)
+{
+	unsigned long val;
+
+	asm volatile ("mfdec %0":"=r" (val):);
+
+	return val;
+}
+
+
+static __inline__ void set_dec (unsigned long val)
+{
+	if (val)
+		asm volatile ("mtdec %0"::"r" (val));
+}
+#endif /* !CONFIG_MPC83XX_TIMER */
+
+void enable_interrupts(void)
+{
+	set_msr (get_msr () | MSR_EE);
+}
+
+/* returns flag if MSR_EE was set before */
+int disable_interrupts(void)
+{
+	ulong msr = get_msr ();
+
+	set_msr (msr & ~MSR_EE);
+	return ((msr & MSR_EE) != 0);
+}
+
+#ifndef CONFIG_MPC83XX_TIMER
+int interrupt_init(void)
+{
+	/* call cpu specific function from $(CPU)/interrupts.c */
+	interrupt_init_cpu (&decrementer_count);
+
+	set_dec (decrementer_count);
+
+	set_msr (get_msr () | MSR_EE);
+
+	return (0);
+}
+
+static volatile ulong timestamp = 0;
+
+void timer_interrupt(struct pt_regs *regs)
+{
+	/* call cpu specific function from $(CPU)/interrupts.c */
+	timer_interrupt_cpu (regs);
+
+	/* Restore Decrementer Count */
+	set_dec (decrementer_count);
+
+	timestamp++;
+
+#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
+	if (CONFIG_SYS_WATCHDOG_FREQ && (timestamp % (CONFIG_SYS_WATCHDOG_FREQ)) == 0)
+		WATCHDOG_RESET ();
+#endif    /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
+
+#ifdef CONFIG_LED_STATUS
+	status_led_tick(timestamp);
+#endif /* CONFIG_LED_STATUS */
+}
+
+ulong get_timer (ulong base)
+{
+	return (timestamp - base);
+}
+#endif /* !CONFIG_MPC83XX_TIMER */