* Some code cleanup
* Patch by Josef Baumgartner, 10 Feb 2004:
Fixes for Coldfire port
* Patch by Brad Kemp, 11 Feb 2004:
Fix CFI flash driver problems
diff --git a/cpu/mcf52x2/interrupts.c b/cpu/mcf52x2/interrupts.c
new file mode 100644
index 0000000..fa181d9
--- /dev/null
+++ b/cpu/mcf52x2/interrupts.c
@@ -0,0 +1,174 @@
+/*
+ * (C) Copyright 2003 Josef Baumgartner <josef.baumgartner@telex.de>
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_M5272
+#include <asm/m5272.h>
+#include <asm/immap_5272.h>
+#endif
+
+#ifdef CONFIG_M5282
+#include <asm/m5282.h>
+#include <asm/immap_5282.h>
+#endif
+
+
+#define NR_IRQS 31
+
+/*
+ * Interrupt vector functions.
+ */
+struct interrupt_action {
+ interrupt_handler_t *handler;
+ void *arg;
+}
+
+static struct interrupt_action irq_vecs[NR_IRQS];
+
+static __inline__ unsigned short get_sr (void)
+{
+ unsigned short sr;
+
+ asm volatile ("move.w %%sr,%0":"=r" (sr):);
+
+ return sr;
+}
+
+static __inline__ void set_sr (unsigned short sr)
+{
+ asm volatile ("move.w %0,%%sr"::"r" (sr));
+}
+
+/************************************************************************/
+/*
+ * Install and free an interrupt handler
+ */
+void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
+{
+#ifdef CONFIG_M5272
+ volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1);
+#endif
+ int vec_base = 0;
+
+#ifdef CONFIG_M5272
+ vec_base = intp->int_pivr & 0xe0;
+#endif
+
+ if ((vec < vec_base) || (vec > vec_base + NR_IRQS)) {
+ printf ("irq_install_handler: wrong interrupt vector %d\n",
+ vec);
+ return;
+ }
+
+ irq_vecs[vec - vec_base].handler = handler;
+ irq_vecs[vec - vec_base].arg = arg;
+}
+
+void irq_free_handler (int vec)
+{
+#ifdef CONFIG_M5272
+ volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1);
+#endif
+ int vec_base = 0;
+
+#ifdef CONFIG_M5272
+ vec_base = intp->int_pivr & 0xe0;
+#endif
+
+ if ((vec < vec_base) || (vec > vec_base + NR_IRQS)) {
+ return;
+ }
+
+ irq_vecs[vec - vec_base].handler = NULL;
+ irq_vecs[vec - vec_base].arg = NULL;
+}
+
+void enable_interrupts (void)
+{
+ unsigned short sr;
+
+ sr = get_sr ();
+ set_sr (sr & ~0x0700);
+}
+
+int disable_interrupts (void)
+{
+ unsigned short sr;
+
+ sr = get_sr ();
+ set_sr (sr | 0x0700);
+
+ return ((sr & 0x0700) == 0); /* return TRUE, if interrupts were enabled before */
+}
+
+void int_handler (struct pt_regs *fp)
+{
+#ifdef CONFIG_M5272
+ volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1);
+#endif
+ int vec, vec_base = 0;
+
+ vec = (fp->vector >> 2) & 0xff;
+#ifdef CONFIG_M5272
+ vec_base = intp->int_pivr & 0xe0;
+#endif
+
+ if (irq_vecs[vec - vec_base].handler != NULL) {
+ irq_vecs[vec -
+ vec_base].handler (irq_vecs[vec - vec_base].arg);
+ } else {
+ printf ("\nBogus External Interrupt Vector %ld\n", vec);
+ }
+}
+
+#ifdef CONFIG_M5272
+int interrupt_init (void)
+{
+ volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1);
+
+ /* disable all external interrupts */
+ intp->int_icr1 = 0x88888888;
+ intp->int_icr2 = 0x88888888;
+ intp->int_icr3 = 0x88888888;
+ intp->int_icr4 = 0x88888888;
+ intp->int_pitr = 0x00000000;
+ /* initialize vector register */
+ intp->int_pivr = 0x40;
+
+ enable_interrupts ();
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_M5282
+int interrupt_init (void)
+{
+ return 0;
+}
+#endif