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

source/bootloader/u-boot-2020.01/arch/powerpc/cpu/mpc83xx/interrupts.c

@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright 2004 Freescale Semiconductor, Inc.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <irq_func.h>
+#include <mpc83xx.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct irq_action {
+	interrupt_handler_t *handler;
+	void *arg;
+	ulong count;
+};
+
+void interrupt_init_cpu (unsigned *decrementer_count)
+{
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+
+	*decrementer_count = (gd->bus_clk / 4) / CONFIG_SYS_HZ;
+
+	/* Enable e300 time base */
+
+	immr->sysconf.spcr |= 0x00400000;
+}
+
+
+/*
+ * Handle external interrupts
+ */
+
+void external_interrupt(struct pt_regs *regs)
+{
+}
+
+
+/*
+ * Install and free an interrupt handler.
+ */
+
+void
+irq_install_handler(int irq, interrupt_handler_t * handler, void *arg)
+{
+}
+
+
+void irq_free_handler(int irq)
+{
+}
+
+
+void timer_interrupt_cpu (struct pt_regs *regs)
+{
+	/* nothing to do here */
+	return;
+}
+
+
+#if defined(CONFIG_CMD_IRQ)
+
+/* ripped this out of ppc4xx/interrupts.c */
+
+/*
+ * irqinfo - print information about PCI devices
+ */
+
+void
+do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char * const argv[])
+{
+}
+
+#endif