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 * SPDX-License-Identifier: GPL-2.0+
23 #include <asm/proc-armv/ptrace.h>
24 #include <asm/u-boot-arm.h>
26 DECLARE_GLOBAL_DATA_PTR;
29 int interrupt_init (void)
32 * setup up stacks if necessary
34 IRQ_STACK_START = gd->irq_sp - 4;
35 IRQ_STACK_START_IN = gd->irq_sp + 8;
36 FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
38 return arch_interrupt_init();
41 /* enable IRQ interrupts */
42 void enable_interrupts (void)
45 __asm__ __volatile__("mrs %0, cpsr\n"
55 * disable IRQ/FIQ interrupts
56 * returns true if interrupts had been enabled before we disabled them
58 int disable_interrupts (void)
60 unsigned long old,temp;
61 __asm__ __volatile__("mrs %0, cpsr\n"
64 : "=r" (old), "=r" (temp)
67 return (old & 0x80) == 0;
70 int interrupt_init (void)
73 * setup up stacks if necessary
75 IRQ_STACK_START_IN = gd->irq_sp + 8;
80 void enable_interrupts (void)
84 int disable_interrupts (void)
93 panic ("Resetting CPU ...\n");
97 void show_regs (struct pt_regs *regs)
100 const char *processor_modes[] = {
101 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
102 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
103 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
104 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
105 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
106 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
107 "UK8_32", "UK9_32", "HYP_32", "UND_32",
108 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
111 flags = condition_codes (regs);
113 printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
114 "sp : %08lx ip : %08lx fp : %08lx\n",
115 instruction_pointer (regs),
116 regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
117 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
118 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
119 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
120 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
121 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
122 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
123 printf ("Flags: %c%c%c%c",
124 flags & CC_N_BIT ? 'N' : 'n',
125 flags & CC_Z_BIT ? 'Z' : 'z',
126 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
127 printf (" IRQs %s FIQs %s Mode %s%s\n",
128 interrupts_enabled (regs) ? "on" : "off",
129 fast_interrupts_enabled (regs) ? "on" : "off",
130 processor_modes[processor_mode (regs)],
131 thumb_mode (regs) ? " (T)" : "");
134 void do_undefined_instruction (struct pt_regs *pt_regs)
136 printf ("undefined instruction\n");
141 void do_software_interrupt (struct pt_regs *pt_regs)
143 printf ("software interrupt\n");
148 void do_prefetch_abort (struct pt_regs *pt_regs)
150 printf ("prefetch abort\n");
155 void do_data_abort (struct pt_regs *pt_regs)
157 printf ("data abort\n");
162 void do_not_used (struct pt_regs *pt_regs)
164 printf ("not used\n");
169 void do_fiq (struct pt_regs *pt_regs)
171 printf ("fast interrupt request\n");
176 #ifndef CONFIG_USE_IRQ
177 void do_irq (struct pt_regs *pt_regs)
179 printf ("interrupt request\n");