3 * Texas Instruments <www.ti.com>
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
10 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
11 * Alex Zuepke <azu@sysgo.de>
13 * (C) Copyright 2002-2004
14 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
17 * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
19 * See file CREDITS for list of people who contributed to this
22 * This program is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU General Public License as
24 * published by the Free Software Foundation; either version 2 of
25 * the License, or (at your option) any later version.
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
39 #include <asm/proc-armv/ptrace.h>
42 DECLARE_GLOBAL_DATA_PTR;
44 int interrupt_init (void)
47 * setup up stacks if necessary
49 IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4;
50 FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
52 return arch_interrupt_init();
55 /* enable IRQ interrupts */
56 void enable_interrupts (void)
59 __asm__ __volatile__("mrs %0, cpsr\n"
69 * disable IRQ/FIQ interrupts
70 * returns true if interrupts had been enabled before we disabled them
72 int disable_interrupts (void)
74 unsigned long old,temp;
75 __asm__ __volatile__("mrs %0, cpsr\n"
78 : "=r" (old), "=r" (temp)
81 return (old & 0x80) == 0;
84 void enable_interrupts (void)
88 int disable_interrupts (void)
97 panic ("Resetting CPU ...\n");
101 void show_regs (struct pt_regs *regs)
104 const char *processor_modes[] = {
105 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
106 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
107 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
108 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
109 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
110 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
111 "UK8_32", "UK9_32", "UK10_32", "UND_32",
112 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
115 flags = condition_codes (regs);
117 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
118 "sp : %08lx ip : %08lx fp : %08lx\n",
119 instruction_pointer (regs),
120 regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
121 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
122 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
123 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
124 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
125 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
126 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
127 printf ("Flags: %c%c%c%c",
128 flags & CC_N_BIT ? 'N' : 'n',
129 flags & CC_Z_BIT ? 'Z' : 'z',
130 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
131 printf (" IRQs %s FIQs %s Mode %s%s\n",
132 interrupts_enabled (regs) ? "on" : "off",
133 fast_interrupts_enabled (regs) ? "on" : "off",
134 processor_modes[processor_mode (regs)],
135 thumb_mode (regs) ? " (T)" : "");
138 void do_undefined_instruction (struct pt_regs *pt_regs)
140 printf ("undefined instruction\n");
145 void do_software_interrupt (struct pt_regs *pt_regs)
147 printf ("software interrupt\n");
152 void do_prefetch_abort (struct pt_regs *pt_regs)
154 printf ("prefetch abort\n");
159 void do_data_abort (struct pt_regs *pt_regs)
161 printf ("data abort\n");
166 void do_not_used (struct pt_regs *pt_regs)
168 printf ("not used\n");
173 void do_fiq (struct pt_regs *pt_regs)
175 printf ("fast interrupt request\n");
180 #ifndef CONFIG_USE_IRQ
181 void do_irq (struct pt_regs *pt_regs)
183 printf ("interrupt request\n");