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>
41 DECLARE_GLOBAL_DATA_PTR;
44 int interrupt_init (void)
47 * setup up stacks if necessary
49 #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
50 IRQ_STACK_START = gd->irq_sp - 4;
51 IRQ_STACK_START_IN = gd->irq_sp + 8;
53 IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4;
55 FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
57 return arch_interrupt_init();
60 /* enable IRQ interrupts */
61 void enable_interrupts (void)
64 __asm__ __volatile__("mrs %0, cpsr\n"
74 * disable IRQ/FIQ interrupts
75 * returns true if interrupts had been enabled before we disabled them
77 int disable_interrupts (void)
79 unsigned long old,temp;
80 __asm__ __volatile__("mrs %0, cpsr\n"
83 : "=r" (old), "=r" (temp)
86 return (old & 0x80) == 0;
89 #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
90 int interrupt_init (void)
93 * setup up stacks if necessary
95 IRQ_STACK_START_IN = gd->irq_sp + 8;
101 void enable_interrupts (void)
105 int disable_interrupts (void)
114 panic ("Resetting CPU ...\n");
118 void show_regs (struct pt_regs *regs)
121 const char *processor_modes[] = {
122 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
123 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
124 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
125 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
126 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
127 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
128 "UK8_32", "UK9_32", "UK10_32", "UND_32",
129 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
132 flags = condition_codes (regs);
134 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
135 "sp : %08lx ip : %08lx fp : %08lx\n",
136 instruction_pointer (regs),
137 regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
138 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
139 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
140 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
141 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
142 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
143 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
144 printf ("Flags: %c%c%c%c",
145 flags & CC_N_BIT ? 'N' : 'n',
146 flags & CC_Z_BIT ? 'Z' : 'z',
147 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
148 printf (" IRQs %s FIQs %s Mode %s%s\n",
149 interrupts_enabled (regs) ? "on" : "off",
150 fast_interrupts_enabled (regs) ? "on" : "off",
151 processor_modes[processor_mode (regs)],
152 thumb_mode (regs) ? " (T)" : "");
155 void do_undefined_instruction (struct pt_regs *pt_regs)
157 printf ("undefined instruction\n");
162 void do_software_interrupt (struct pt_regs *pt_regs)
164 printf ("software interrupt\n");
169 void do_prefetch_abort (struct pt_regs *pt_regs)
171 printf ("prefetch abort\n");
176 void do_data_abort (struct pt_regs *pt_regs)
178 printf ("data abort\n");
183 void do_not_used (struct pt_regs *pt_regs)
185 printf ("not used\n");
190 void do_fiq (struct pt_regs *pt_regs)
192 printf ("fast interrupt request\n");
197 #ifndef CONFIG_USE_IRQ
198 void do_irq (struct pt_regs *pt_regs)
200 printf ("interrupt request\n");