Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / powerpc / cpu / 74xx_7xx / interrupts.c

diff --git a/qemu/roms/u-boot/arch/powerpc/cpu/74xx_7xx/interrupts.c b/qemu/roms/u-boot/arch/powerpc/cpu/74xx_7xx/interrupts.c
new file mode 100644 (file)
index 0000000..a906243
--- /dev/null
+++ b/qemu/roms/u-boot/arch/powerpc/cpu/74xx_7xx/interrupts.c
@@ -0,0 +1,88 @@
+/*
+ * (C) Copyright 2001
+ * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+/*
+ * 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)
+{
+       debug("interrupt_init: GT main cause reg: %08x:%08x\n",
+              GTREGREAD(LOW_INTERRUPT_CAUSE_REGISTER),
+              GTREGREAD(HIGH_INTERRUPT_CAUSE_REGISTER));
+       debug("interrupt_init: ethernet cause regs: %08x %08x %08x\n",
+              GTREGREAD(ETHERNET0_INTERRUPT_CAUSE_REGISTER),
+              GTREGREAD(ETHERNET1_INTERRUPT_CAUSE_REGISTER),
+              GTREGREAD(ETHERNET2_INTERRUPT_CAUSE_REGISTER));
+       debug("interrupt_init: ethernet mask regs:  %08x %08x %08x\n",
+              GTREGREAD(ETHERNET0_INTERRUPT_MASK_REGISTER),
+              GTREGREAD(ETHERNET1_INTERRUPT_MASK_REGISTER),
+              GTREGREAD(ETHERNET2_INTERRUPT_MASK_REGISTER));
+       debug("interrupt_init: setting decrementer_count\n");
+
+       *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 * const argv[])
+{
+       puts("IRQ related functions are unimplemented currently.\n");
+}