1 files changed, 105 insertions, 0 deletions
diff --git a/arch/ppc/cpu/74xx_7xx/interrupts.c b/arch/ppc/cpu/74xx_7xx/interrupts.c
new file mode 100644
index 0000000..0ea1aec
--- /dev/null
+++ b/arch/ppc/cpu/74xx_7xx/interrupts.c
@@ -0,0 +1,105 @@
+/*
+ * (C) Copyright 2001
+ * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * interrupts.c - just enough support for the decrementer/timer
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+#include <mpc8xx_irq.h>
+#include <asm/processor.h>
+#include <commproc.h>
+#include <command.h>
+
+int interrupt_init_cpu (unsigned *decrementer_count)
+{
+#if defined(DEBUG) && !defined(CONFIG_AMIGAONEG3SE)
+	printf("interrupt_init: GT main cause reg: %08x:%08x\n",
+	       GTREGREAD(LOW_INTERRUPT_CAUSE_REGISTER),
+	       GTREGREAD(HIGH_INTERRUPT_CAUSE_REGISTER));
+	printf("interrupt_init: ethernet cause regs: %08x %08x %08x\n",
+	       GTREGREAD(ETHERNET0_INTERRUPT_CAUSE_REGISTER),
+	       GTREGREAD(ETHERNET1_INTERRUPT_CAUSE_REGISTER),
+	       GTREGREAD(ETHERNET2_INTERRUPT_CAUSE_REGISTER));
+	printf("interrupt_init: ethernet mask regs:  %08x %08x %08x\n",
+	       GTREGREAD(ETHERNET0_INTERRUPT_MASK_REGISTER),
+	       GTREGREAD(ETHERNET1_INTERRUPT_MASK_REGISTER),
+	       GTREGREAD(ETHERNET2_INTERRUPT_MASK_REGISTER));
+	puts("interrupt_init: setting decrementer_count\n");
+#endif
+	*decrementer_count = get_tbclk() / CONFIG_SYS_HZ;
+
+	return (0);
+}
+
+/****************************************************************************/
+
+/*
+ * Handle external interrupts
+ */
+void
+external_interrupt(struct pt_regs *regs)
+{
+	puts("external_interrupt (oops!)\n");
+}
+
+volatile ulong timestamp = 0;
+
+/*
+ * timer_interrupt - gets called when the decrementer overflows,
+ * with interrupts disabled.
+ * Trivial implementation - no need to be really accurate.
+ */
+void
+timer_interrupt_cpu (struct pt_regs *regs)
+{
+	/* nothing to do here */
+	return;
+}
+
+/****************************************************************************/
+
+/*
+ * Install and free a interrupt handler.
+ */
+
+void
+irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
+{
+
+}
+
+void
+irq_free_handler(int vec)
+{
+
+}
+
+/****************************************************************************/
+
+void
+do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+	puts("IRQ related functions are unimplemented currently.\n");
+}