mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-27 04:18:51 +09:00
247 lines
4.0 KiB
ArmAsm
247 lines
4.0 KiB
ArmAsm
/*
|
|
* U-boot - interrupt.S Processing of interrupts and exception handling
|
|
*
|
|
* Copyright (c) 2005-2007 Analog Devices Inc.
|
|
*
|
|
* (C) Copyright 2000-2004
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* This file is based on interrupt.S
|
|
*
|
|
* Copyright (C) 2003 Metrowerks, Inc. <mwaddel@metrowerks.com>
|
|
* Copyright (C) 2002 Arcturus Networks Ltd. Ted Ma <mated@sympatico.ca>
|
|
* Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>,
|
|
* Kenneth Albanowski <kjahds@kjahds.com>,
|
|
* The Silver Hammer Group, Ltd.
|
|
*
|
|
* (c) 1995, Dionne & Associates
|
|
* (c) 1995, DKG Display Tech.
|
|
*
|
|
* This file is also based on exception.asm
|
|
* (C) Copyright 2001-2005 - Analog Devices, Inc. All rights reserved.
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston,
|
|
* MA 02110-1301 USA
|
|
*/
|
|
|
|
#define ASSEMBLY
|
|
#include <config.h>
|
|
#include <asm/blackfin.h>
|
|
#include <asm/hw_irq.h>
|
|
#include <asm/entry.h>
|
|
#include <asm/blackfin_defs.h>
|
|
|
|
.global _blackfin_irq_panic;
|
|
|
|
.text
|
|
.align 2
|
|
|
|
#ifndef CONFIG_KGDB
|
|
.global _evt_emulation
|
|
_evt_emulation:
|
|
SAVE_CONTEXT
|
|
r0 = IRQ_EMU;
|
|
r1 = seqstat;
|
|
sp += -12;
|
|
call _blackfin_irq_panic;
|
|
sp += 12;
|
|
rte;
|
|
#endif
|
|
|
|
.global _evt_nmi
|
|
_evt_nmi:
|
|
SAVE_CONTEXT
|
|
r0 = IRQ_NMI;
|
|
r1 = RETN;
|
|
sp += -12;
|
|
call _blackfin_irq_panic;
|
|
sp += 12;
|
|
|
|
_evt_nmi_exit:
|
|
rtn;
|
|
|
|
.global _trap
|
|
_trap:
|
|
SAVE_ALL_SYS
|
|
r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
|
|
sp += -12;
|
|
call _trap_c
|
|
sp += 12;
|
|
RESTORE_ALL_SYS
|
|
rtx;
|
|
|
|
.global _evt_rst
|
|
_evt_rst:
|
|
SAVE_CONTEXT
|
|
r0 = IRQ_RST;
|
|
r1 = RETN;
|
|
sp += -12;
|
|
call _do_reset;
|
|
sp += 12;
|
|
|
|
_evt_rst_exit:
|
|
rtn;
|
|
|
|
irq_panic:
|
|
r0 = IRQ_EVX;
|
|
r1 = sp;
|
|
sp += -12;
|
|
call _blackfin_irq_panic;
|
|
sp += 12;
|
|
|
|
.global _evt_ivhw
|
|
_evt_ivhw:
|
|
SAVE_CONTEXT
|
|
RAISE 14;
|
|
|
|
_evt_ivhw_exit:
|
|
rti;
|
|
|
|
.global _evt_timer
|
|
_evt_timer:
|
|
SAVE_CONTEXT
|
|
r0 = IRQ_CORETMR;
|
|
sp += -12;
|
|
/* Polling method used now. */
|
|
/* call timer_int; */
|
|
sp += 12;
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
nop;
|
|
|
|
.global _evt_evt7
|
|
_evt_evt7:
|
|
SAVE_CONTEXT
|
|
r0 = 7;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
|
|
evt_evt7_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_evt8
|
|
_evt_evt8:
|
|
SAVE_CONTEXT
|
|
r0 = 8;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
|
|
evt_evt8_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_evt9
|
|
_evt_evt9:
|
|
SAVE_CONTEXT
|
|
r0 = 9;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
|
|
evt_evt9_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_evt10
|
|
_evt_evt10:
|
|
SAVE_CONTEXT
|
|
r0 = 10;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
|
|
evt_evt10_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_evt11
|
|
_evt_evt11:
|
|
SAVE_CONTEXT
|
|
r0 = 11;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
|
|
evt_evt11_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_evt12
|
|
_evt_evt12:
|
|
SAVE_CONTEXT
|
|
r0 = 12;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
evt_evt12_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_evt13
|
|
_evt_evt13:
|
|
SAVE_CONTEXT
|
|
r0 = 13;
|
|
sp += -12;
|
|
call _process_int;
|
|
sp += 12;
|
|
|
|
evt_evt13_exit:
|
|
RESTORE_CONTEXT
|
|
rti;
|
|
|
|
.global _evt_system_call
|
|
_evt_system_call:
|
|
[--sp] = r0;
|
|
[--SP] = RETI;
|
|
r0 = [sp++];
|
|
r0 += 2;
|
|
[--sp] = r0;
|
|
RETI = [SP++];
|
|
r0 = [SP++];
|
|
SAVE_CONTEXT
|
|
sp += -12;
|
|
call _exception_handle;
|
|
sp += 12;
|
|
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 _exception_handle;
|
|
sp += 12;
|
|
RESTORE_CONTEXT
|
|
RTI;
|
|
|
|
evt_soft_int1_exit:
|
|
rti;
|