diff options
author | TsiChung Liew <Tsi-Chung.Liew@freescale.com> | 2007-06-18 13:50:13 -0500 |
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committer | John Rigby <jrigby@freescale.com> | 2007-06-18 15:17:56 -0600 |
commit | 8e585f02f82c17cc66cd229dbf0fd3066bbbf658 (patch) | |
tree | 9483ff1f96ab9208eeac92101a5c6db855fcd2ee /lib_m68k/interrupts.c | |
parent | 9912121f7ed804ea58fd62f3f230b5dcfc357d88 (diff) |
Added M5329AFEE and M5329BFEE Platforms
Added board/freescale/m5329evb, cpu/mcf532x, drivers/net,
drivers/serial, immap_5329.h, m5329.h, mcfrtc.h,
include/configs/M5329EVB.h, lib_m68k/interrupts.c, and
rtc/mcfrtc.c
Modified CREDITS, MAKEFILE, Makefile, README, common/cmd_bdinfo.c,
common/cmd_mii.c, include/asm-m68k/byteorder.h, include/asm-m68k/fec.h,
include/asm-m68k/io.h, include/asm-m68k/mcftimer.h,
include/asm-m68k/mcfuart.h, include/asm-m68k/ptrace.h,
include/asm-m68k/u-boot.h, lib_m68k/Makefile, lib_m68k/board.c,
lib_m68k/time.c, net/eth.c and rtc/Makefile
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Diffstat (limited to 'lib_m68k/interrupts.c')
-rw-r--r-- | lib_m68k/interrupts.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/lib_m68k/interrupts.c b/lib_m68k/interrupts.c new file mode 100644 index 00000000000..6b3ce8975db --- /dev/null +++ b/lib_m68k/interrupts.c @@ -0,0 +1,118 @@ +/* + * (C) Copyright 2000-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2007 + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * + * 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_MCFINTC +#define NR_IRQS (CFG_NUM_IRQS) + +/* + * 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) +{ + if ((vec < 0) || (vec > NR_IRQS)) { + printf ("irq_install_handler: wrong interrupt vector %d\n", + vec); + return; + } + + irq_vecs[vec].handler = handler; + irq_vecs[vec].arg = arg; +} + +void irq_free_handler (int vec) +{ + if ((vec < 0) || (vec > NR_IRQS)) { + return; + } + + irq_vecs[vec].handler = NULL; + irq_vecs[vec].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) +{ + int vec; + + vec = (fp->vector >> 2) & 0xff; + if (vec > 0x40) + vec -= 0x40; + else + return; + + if (irq_vecs[vec].handler != NULL) { + irq_vecs[vec].handler (irq_vecs[vec].arg); + } else { + printf ("\nBogus External Interrupt Vector %d\n", vec); + } +} +#endif /* CONFIG_MCFINTC */
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