2006-03-12 01:12:27 +00:00
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/*
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* U-boot - interrupt.S Processing of interrupts and exception handling
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*
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* Copyright (c) 2005 blackfin.uclinux.org
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*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* This file is based on interrupt.S
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*
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* Copyright (C) 2003 Metrowerks, Inc. <mwaddel@metrowerks.com>
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* Copyright (C) 2002 Arcturus Networks Ltd. Ted Ma <mated@sympatico.ca>
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* Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
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* Kenneth Albanowski <kjahds@kjahds.com>,
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* The Silver Hammer Group, Ltd.
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*
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* (c) 1995, Dionne & Associates
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* (c) 1995, DKG Display Tech.
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*
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* This file is also based on exception.asm
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* (C) Copyright 2001-2005 - Analog Devices, Inc. All rights reserved.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#define ASSEMBLY
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#include <asm/hw_irq.h>
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#include <asm/entry.h>
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#include <asm/blackfin_defs.h>
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#include <asm/cpu/bf533_irq.h>
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.global blackfin_irq_panic;
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.text
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.align 2
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#ifndef CONFIG_KGDB
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.global evt_emulation
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evt_emulation:
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SAVE_CONTEXT
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r0 = IRQ_EMU;
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r1 = seqstat;
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sp += -12;
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call blackfin_irq_panic;
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sp += 12;
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rte;
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#endif
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.global evt_nmi
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evt_nmi:
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SAVE_CONTEXT
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r0 = IRQ_NMI;
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r1 = RETN;
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sp += -12;
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call blackfin_irq_panic;
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sp += 12;
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_evt_nmi_exit:
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rtn;
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.global trap
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trap:
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[--sp] = r0;
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[--sp] = r1;
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[--sp] = p0;
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[--sp] = p1;
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[--sp] = astat;
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r0 = seqstat;
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R0 <<= 26;
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R0 >>= 26;
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p0 = r0;
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p1.l = EVTABLE;
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p1.h = EVTABLE;
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p0 = p1 + (p0 << 1);
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r1 = W[p0] (Z);
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p1 = r1;
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jump (pc + p1);
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.global _EVENT1
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_EVENT1:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT2
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_EVENT2:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT3
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_EVENT3:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT4
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_EVENT4:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT5
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_EVENT5:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT6
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_EVENT6:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT7
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_EVENT7:
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RAISE 15;
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JUMP.S _EXIT;
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.global _EVENT8
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_EVENT8:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT9
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_EVENT9:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT10
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_EVENT10:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT11
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_EVENT11:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT12
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_EVENT12:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT13
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_EVENT13:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT14
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_EVENT14:
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/* RAISE 14; */
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CALL _cplb_hdr;
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JUMP.S _EXIT;
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.global _EVENT19
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_EVENT19:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT20
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_EVENT20:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EVENT21
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_EVENT21:
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RAISE 14;
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JUMP.S _EXIT;
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.global _EXIT
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_EXIT:
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ASTAT = [sp++];
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p1 = [sp++];
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p0 = [sp++];
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r1 = [sp++];
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r0 = [sp++];
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RTX;
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EVTABLE:
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x0000;
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.byte2 0x003E;
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.byte2 0x0042;
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.byte4 0x0000;
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.byte4 0x0000;
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.byte4 0x0000;
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.byte4 0x0000;
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.byte4 0x0000;
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.byte4 0x0000;
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.byte4 0x0000;
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.byte2 0x0000;
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.byte2 0x001E;
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.byte2 0x0022;
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.byte2 0x0032;
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.byte2 0x002e;
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.byte2 0x0002;
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.byte2 0x0036;
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.byte2 0x002A;
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.byte2 0x001A;
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.byte2 0x0016;
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.byte2 0x000A;
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.byte2 0x000E;
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.byte2 0x0012;
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.byte2 0x0006;
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.byte2 0x0026;
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.global evt_rst
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evt_rst:
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SAVE_CONTEXT
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r0 = IRQ_RST;
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r1 = RETN;
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sp += -12;
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call do_reset;
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sp += 12;
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_evt_rst_exit:
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2006-03-12 01:55:22 +00:00
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rtn;
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2006-03-12 01:12:27 +00:00
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irq_panic:
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r0 = IRQ_EVX;
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r1 = sp;
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sp += -12;
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call blackfin_irq_panic;
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sp += 12;
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.global evt_ivhw
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evt_ivhw:
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SAVE_CONTEXT
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RAISE 14;
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_evt_ivhw_exit:
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rti;
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.global evt_timer
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evt_timer:
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SAVE_CONTEXT
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r0 = IRQ_CORETMR;
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sp += -12;
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/* Polling method used now. */
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/* call timer_int; */
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sp += 12;
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RESTORE_CONTEXT
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rti;
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nop;
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.global evt_evt7
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evt_evt7:
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SAVE_CONTEXT
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r0 = 7;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt7_exit:
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RESTORE_CONTEXT
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2006-03-12 01:55:22 +00:00
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rti;
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2006-03-12 01:12:27 +00:00
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.global evt_evt8
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evt_evt8:
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SAVE_CONTEXT
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r0 = 8;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt8_exit:
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RESTORE_CONTEXT
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rti;
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.global evt_evt9
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evt_evt9:
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SAVE_CONTEXT
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r0 = 9;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt9_exit:
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RESTORE_CONTEXT
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rti;
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.global evt_evt10
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evt_evt10:
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SAVE_CONTEXT
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r0 = 10;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt10_exit:
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RESTORE_CONTEXT
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rti;
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.global evt_evt11
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evt_evt11:
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SAVE_CONTEXT
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r0 = 11;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt11_exit:
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RESTORE_CONTEXT
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rti;
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.global evt_evt12
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evt_evt12:
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SAVE_CONTEXT
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r0 = 12;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt12_exit:
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RESTORE_CONTEXT
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rti;
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.global evt_evt13
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evt_evt13:
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SAVE_CONTEXT
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r0 = 13;
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sp += -12;
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call process_int;
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sp += 12;
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evt_evt13_exit:
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RESTORE_CONTEXT
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rti;
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.global evt_system_call
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evt_system_call:
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[--sp] = r0;
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[--SP] = RETI;
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r0 = [sp++];
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r0 += 2;
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[--sp] = r0;
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RETI = [SP++];
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r0 = [SP++];
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|
|
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SAVE_CONTEXT
|
|
|
|
|
sp += -12;
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|
|
|
call display_excp;
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|
|
|
|
sp += 12;
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|
|
|
|
RESTORE_CONTEXT
|
|
|
|
|
RTI;
|
|
|
|
|
|
|
|
|
|
evt_system_call_exit:
|
|
|
|
|
rti;
|
|
|
|
|
|
|
|
|
|
.global evt_soft_int1
|
|
|
|
|
evt_soft_int1:
|
|
|
|
|
[--sp] = r0;
|
|
|
|
|
[--SP] = RETI;
|
|
|
|
|
r0 = [sp++];
|
|
|
|
|
r0 += 2;
|
|
|
|
|
[--sp] = r0;
|
|
|
|
|
RETI = [SP++];
|
|
|
|
|
r0 = [SP++];
|
|
|
|
|
SAVE_CONTEXT
|
|
|
|
|
sp += -12;
|
|
|
|
|
call display_excp;
|
|
|
|
|
sp += 12;
|
|
|
|
|
RESTORE_CONTEXT
|
|
|
|
|
RTI;
|
|
|
|
|
|
|
|
|
|
evt_soft_int1_exit:
|
|
|
|
|
rti;
|
