[Blackfin][PATCH] Add BF537 stamp board support

1 files changed, 117 insertions, 0 deletions

diff --git a/cpu/bf537/ints.c b/cpu/bf537/ints.c
new file mode 100644
index 0000000..f476f14
--- /dev/null
+++ b/cpu/bf537/ints.c
@@ -0,0 +1,117 @@
+/*
+ * U-boot - ints.c Interrupt related routines
+ *
+ * Copyright (c) 2005 blackfin.uclinux.org
+ *
+ * This file is based on ints.c
+ *
+ * Apr18 2003, Changed by HuTao to support interrupt cascading for Blackfin
+ *             drivers
+ *
+ * Copyright 1996 Roman Zippel
+ * Copyright 1999 D. Jeff Dionne <jeff@uclinux.org>
+ * Copyright 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
+ * Copyright 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
+ * Copyright 2003 Metrowerks/Motorola
+ *
+ * (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 <linux/stddef.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/machdep.h>
+#include <asm/setup.h>
+#include <asm/blackfin.h>
+#include "cpu.h"
+
+void blackfin_irq_panic(int reason, struct pt_regs *regs)
+{
+	printf("\n\nException: IRQ 0x%x entered\n", reason);
+	printf("code=[0x%x], ", (unsigned int)(regs->seqstat & 0x3f));
+	printf("stack frame=0x%x, ", (unsigned int)regs);
+	printf("bad PC=0x%04x\n", (unsigned int)regs->pc);
+	dump(regs);
+	printf("Unhandled IRQ or exceptions!\n");
+	printf("Please reset the board \n");
+}
+
+void blackfin_init_IRQ(void)
+{
+	*(unsigned volatile long *)(SIC_IMASK) = SIC_UNMASK_ALL;
+	cli();
+#ifndef CONFIG_KGDB
+	*(unsigned volatile long *)(EVT_EMULATION_ADDR) = 0x0;
+#endif
+	*(unsigned volatile long *)(EVT_NMI_ADDR) =
+	    (unsigned volatile long)evt_nmi;
+	*(unsigned volatile long *)(EVT_EXCEPTION_ADDR) =
+	    (unsigned volatile long)trap;
+	*(unsigned volatile long *)(EVT_HARDWARE_ERROR_ADDR) =
+	    (unsigned volatile long)evt_ivhw;
+	*(unsigned volatile long *)(EVT_RESET_ADDR) =
+	    (unsigned volatile long)evt_rst;
+	*(unsigned volatile long *)(EVT_TIMER_ADDR) =
+	    (unsigned volatile long)evt_timer;
+	*(unsigned volatile long *)(EVT_IVG7_ADDR) =
+	    (unsigned volatile long)evt_evt7;
+	*(unsigned volatile long *)(EVT_IVG8_ADDR) =
+	    (unsigned volatile long)evt_evt8;
+	*(unsigned volatile long *)(EVT_IVG9_ADDR) =
+	    (unsigned volatile long)evt_evt9;
+	*(unsigned volatile long *)(EVT_IVG10_ADDR) =
+	    (unsigned volatile long)evt_evt10;
+	*(unsigned volatile long *)(EVT_IVG11_ADDR) =
+	    (unsigned volatile long)evt_evt11;
+	*(unsigned volatile long *)(EVT_IVG12_ADDR) =
+	    (unsigned volatile long)evt_evt12;
+	*(unsigned volatile long *)(EVT_IVG13_ADDR) =
+	    (unsigned volatile long)evt_evt13;
+	*(unsigned volatile long *)(EVT_IVG14_ADDR) =
+	    (unsigned volatile long)evt_system_call;
+	*(unsigned volatile long *)(EVT_IVG15_ADDR) =
+	    (unsigned volatile long)evt_soft_int1;
+	*(volatile unsigned long *)ILAT = 0;
+	asm("csync;");
+	sti();
+	*(volatile unsigned long *)IMASK = 0xffbf;
+	asm("csync;");
+}
+
+void exception_handle(void)
+{
+#if defined (CONFIG_PANIC_HANG)
+	display_excp();
+#else
+	udelay(100000);		/* allow messages to go out */
+	do_reset(NULL, 0, 0, NULL);
+#endif
+}
+
+void display_excp(void)
+{
+	printf("Exception!\n");
+}