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)
81 panic ("Resetting CPU ...\n");
85 void show_regs (struct pt_regs *regs)
88 const char *processor_modes[] = {
89 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
90 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
91 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
92 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
93 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
94 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
95 "UK8_32", "UK9_32", "UK10_32", "UND_32",
96 "UK12_32", "UK13_32", "UK14_32", "SYS_32"
99 flags = condition_codes (regs);
101 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
102 "sp : %08lx ip : %08lx fp : %08lx\n",
103 instruction_pointer (regs),
104 regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
105 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
106 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
107 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
108 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
109 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
110 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
111 printf ("Flags: %c%c%c%c",
112 flags & CC_N_BIT ? 'N' : 'n',
113 flags & CC_Z_BIT ? 'Z' : 'z',
114 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
115 printf (" IRQs %s FIQs %s Mode %s%s\n",
116 interrupts_enabled (regs) ? "on" : "off",
117 fast_interrupts_enabled (regs) ? "on" : "off",
118 processor_modes[processor_mode (regs)],
119 thumb_mode (regs) ? " (T)" : "");
122 void do_undefined_instruction (struct pt_regs *pt_regs)
124 printf ("undefined instruction\n");
129 void do_software_interrupt (struct pt_regs *pt_regs)
131 printf ("software interrupt\n");
136 void do_prefetch_abort (struct pt_regs *pt_regs)
138 printf ("prefetch abort\n");
143 void do_data_abort (struct pt_regs *pt_regs)
145 printf ("data abort\n");
150 void do_not_used (struct pt_regs *pt_regs)
152 printf ("not used\n");
157 void do_fiq (struct pt_regs *pt_regs)
159 printf ("fast interrupt request\n");
164 void do_irq (struct pt_regs *pt_regs)
166 printf ("interrupt request\n");
172 int interrupt_init (void)
174 /* nothing happens here - we don't setup any IRQs */
178 void reset_timer (void)
180 reset_timer_masked ();
183 ulong get_timer (ulong base)
185 return get_timer_masked ();
188 void set_timer (ulong t)
193 void udelay (unsigned long usec)
195 udelay_masked (usec);
199 void reset_timer_masked (void)
204 ulong get_timer_masked (void)
209 void udelay_masked (unsigned long usec)
217 reset_timer_masked ();
219 while (tmo >= get_timer_masked ())