]>
git.ipfire.org Git - u-boot.git/blob - cpu/sa1100/interrupts.c
3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Alex Zuepke <azu@sysgo.de>
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #include <asm/proc-armv/ptrace.h>
34 extern void reset_cpu (ulong addr
);
37 /* enable IRQ/FIQ interrupts */
38 void enable_interrupts (void)
41 __asm__
__volatile__ ("mrs %0, cpsr\n"
51 * disable IRQ/FIQ interrupts
52 * returns true if interrupts had been enabled before we disabled them
54 int disable_interrupts (void)
56 unsigned long old
, temp
;
57 __asm__
__volatile__ ("mrs %0, cpsr\n"
60 : "=r" (old
), "=r" (temp
)
64 return (old
& 0x80) == 0;
67 void enable_interrupts (void)
71 int disable_interrupts (void)
80 panic ("Resetting CPU ...\n");
84 void show_regs (struct pt_regs
*regs
)
87 const char *processor_modes
[] = {
88 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
89 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
90 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
91 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
92 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
93 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
94 "UK8_32", "UK9_32", "UK10_32", "UND_32",
95 "UK12_32", "UK13_32", "UK14_32", "SYS_32"
98 flags
= condition_codes (regs
);
100 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
101 "sp : %08lx ip : %08lx fp : %08lx\n",
102 instruction_pointer (regs
),
103 regs
->ARM_lr
, regs
->ARM_sp
, regs
->ARM_ip
, regs
->ARM_fp
);
104 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
105 regs
->ARM_r10
, regs
->ARM_r9
, regs
->ARM_r8
);
106 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
107 regs
->ARM_r7
, regs
->ARM_r6
, regs
->ARM_r5
, regs
->ARM_r4
);
108 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
109 regs
->ARM_r3
, regs
->ARM_r2
, regs
->ARM_r1
, regs
->ARM_r0
);
110 printf ("Flags: %c%c%c%c",
111 flags
& CC_N_BIT
? 'N' : 'n',
112 flags
& CC_Z_BIT
? 'Z' : 'z',
113 flags
& CC_C_BIT
? 'C' : 'c', flags
& CC_V_BIT
? 'V' : 'v');
114 printf (" IRQs %s FIQs %s Mode %s%s\n",
115 interrupts_enabled (regs
) ? "on" : "off",
116 fast_interrupts_enabled (regs
) ? "on" : "off",
117 processor_modes
[processor_mode (regs
)],
118 thumb_mode (regs
) ? " (T)" : "");
121 void do_undefined_instruction (struct pt_regs
*pt_regs
)
123 printf ("undefined instruction\n");
128 void do_software_interrupt (struct pt_regs
*pt_regs
)
130 printf ("software interrupt\n");
135 void do_prefetch_abort (struct pt_regs
*pt_regs
)
137 printf ("prefetch abort\n");
142 void do_data_abort (struct pt_regs
*pt_regs
)
144 printf ("data abort\n");
149 void do_not_used (struct pt_regs
*pt_regs
)
151 printf ("not used\n");
156 void do_fiq (struct pt_regs
*pt_regs
)
158 printf ("fast interrupt request\n");
163 void do_irq (struct pt_regs
*pt_regs
)
165 printf ("interrupt request\n");
171 int interrupt_init (void)
173 /* nothing happens here - we don't setup any IRQs */
177 void reset_timer (void)
179 reset_timer_masked ();
182 ulong
get_timer (ulong base
)
184 return get_timer_masked ();
187 void set_timer (ulong t
)
192 void udelay (unsigned long usec
)
194 udelay_masked (usec
);
198 void reset_timer_masked (void)
203 ulong
get_timer_masked (void)
208 void udelay_masked (unsigned long usec
)
216 reset_timer_masked ();
218 while (tmo
>= get_timer_masked ())