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>
35 /* enable IRQ/FIQ interrupts */
36 void enable_interrupts (void)
39 __asm__ __volatile__ ("mrs %0, cpsr\n"
49 * disable IRQ/FIQ interrupts
50 * returns true if interrupts had been enabled before we disabled them
52 int disable_interrupts (void)
54 unsigned long old, temp;
55 __asm__ __volatile__ ("mrs %0, cpsr\n"
58 : "=r" (old), "=r" (temp)
62 return (old & 0x80) == 0;
65 void enable_interrupts (void)
69 int disable_interrupts (void)
78 panic ("Resetting CPU ...\n");
82 void show_regs (struct pt_regs *regs)
85 const char *processor_modes[] = {
86 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
87 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
88 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
89 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
90 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
91 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
92 "UK8_32", "UK9_32", "UK10_32", "UND_32",
93 "UK12_32", "UK13_32", "UK14_32", "SYS_32"
96 flags = condition_codes (regs);
98 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
99 "sp : %08lx ip : %08lx fp : %08lx\n",
100 instruction_pointer (regs),
101 regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
102 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
103 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
104 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
105 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
106 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
107 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
108 printf ("Flags: %c%c%c%c",
109 flags & CC_N_BIT ? 'N' : 'n',
110 flags & CC_Z_BIT ? 'Z' : 'z',
111 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
112 printf (" IRQs %s FIQs %s Mode %s%s\n",
113 interrupts_enabled (regs) ? "on" : "off",
114 fast_interrupts_enabled (regs) ? "on" : "off",
115 processor_modes[processor_mode (regs)],
116 thumb_mode (regs) ? " (T)" : "");
119 void do_undefined_instruction (struct pt_regs *pt_regs)
121 printf ("undefined instruction\n");
126 void do_software_interrupt (struct pt_regs *pt_regs)
128 printf ("software interrupt\n");
133 void do_prefetch_abort (struct pt_regs *pt_regs)
135 printf ("prefetch abort\n");
140 void do_data_abort (struct pt_regs *pt_regs)
142 printf ("data abort\n");
147 void do_not_used (struct pt_regs *pt_regs)
149 printf ("not used\n");
154 void do_fiq (struct pt_regs *pt_regs)
156 printf ("fast interrupt request\n");
161 void do_irq (struct pt_regs *pt_regs)
163 printf ("interrupt request\n");
169 int interrupt_init (void)
171 /* nothing happens here - we don't setup any IRQs */
175 void reset_timer (void)
177 reset_timer_masked ();
180 ulong get_timer (ulong base)
182 return get_timer_masked ();
185 void set_timer (ulong t)
190 void udelay (unsigned long usec)
192 udelay_masked (usec);
196 void reset_timer_masked (void)
201 ulong get_timer_masked (void)
206 void udelay_masked (unsigned long usec)
221 endtime = get_timer_masked () + tmo;
224 ulong now = get_timer_masked ();
225 diff = endtime - now;
230 * This function is derived from PowerPC code (read timebase as long long).
231 * On ARM it just returns the timer value.
233 unsigned long long get_ticks(void)
239 * This function is derived from PowerPC code (timebase clock frequency).
240 * On ARM it returns the number of timer ticks per second.
242 ulong get_tbclk (void)