1 // SPDX-License-Identifier: GPL-2.0+
4 * Texas Instruments <www.ti.com>
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Marius Groeger <mgroeger@sysgo.de>
11 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
12 * Alex Zuepke <azu@sysgo.de>
14 * (C) Copyright 2002-2004
15 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
18 * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
22 #include <efi_loader.h>
23 #include <asm/proc-armv/ptrace.h>
24 #include <asm/u-boot-arm.h>
25 #include <efi_loader.h>
27 DECLARE_GLOBAL_DATA_PTR;
29 int interrupt_init (void)
32 * setup up stacks if necessary
34 IRQ_STACK_START_IN = gd->irq_sp + 8;
39 void enable_interrupts (void)
43 int disable_interrupts (void)
50 panic ("Resetting CPU ...\n");
54 static void show_efi_loaded_images(struct pt_regs *regs)
56 efi_print_image_infos((void *)instruction_pointer(regs));
59 void show_regs (struct pt_regs *regs)
61 unsigned long __maybe_unused flags;
62 const char __maybe_unused *processor_modes[] = {
63 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
64 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
65 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
66 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
67 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
68 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
69 "UK8_32", "UK9_32", "HYP_32", "UND_32",
70 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
73 flags = condition_codes (regs);
75 printf("pc : [<%08lx>] lr : [<%08lx>]\n",
76 instruction_pointer(regs), regs->ARM_lr);
77 if (gd->flags & GD_FLG_RELOC) {
78 printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n",
79 instruction_pointer(regs) - gd->reloc_off,
80 regs->ARM_lr - gd->reloc_off);
82 printf("sp : %08lx ip : %08lx fp : %08lx\n",
83 regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
84 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
85 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
86 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
87 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
88 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
89 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
90 printf ("Flags: %c%c%c%c",
91 flags & CC_N_BIT ? 'N' : 'n',
92 flags & CC_Z_BIT ? 'Z' : 'z',
93 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
94 printf (" IRQs %s FIQs %s Mode %s%s\n",
95 interrupts_enabled (regs) ? "on" : "off",
96 fast_interrupts_enabled (regs) ? "on" : "off",
97 processor_modes[processor_mode (regs)],
98 thumb_mode (regs) ? " (T)" : "");
101 /* fixup PC to point to the instruction leading to the exception */
102 static inline void fixup_pc(struct pt_regs *regs, int offset)
104 uint32_t pc = instruction_pointer(regs) + offset;
105 regs->ARM_pc = pc | (regs->ARM_pc & PCMASK);
108 void do_undefined_instruction (struct pt_regs *pt_regs)
111 printf ("undefined instruction\n");
112 fixup_pc(pt_regs, -4);
114 show_efi_loaded_images(pt_regs);
118 void do_software_interrupt (struct pt_regs *pt_regs)
121 printf ("software interrupt\n");
122 fixup_pc(pt_regs, -4);
124 show_efi_loaded_images(pt_regs);
128 void do_prefetch_abort (struct pt_regs *pt_regs)
131 printf ("prefetch abort\n");
132 fixup_pc(pt_regs, -8);
134 show_efi_loaded_images(pt_regs);
138 void do_data_abort (struct pt_regs *pt_regs)
141 printf ("data abort\n");
142 fixup_pc(pt_regs, -8);
144 show_efi_loaded_images(pt_regs);
148 void do_not_used (struct pt_regs *pt_regs)
151 printf ("not used\n");
152 fixup_pc(pt_regs, -8);
154 show_efi_loaded_images(pt_regs);
158 void do_fiq (struct pt_regs *pt_regs)
161 printf ("fast interrupt request\n");
162 fixup_pc(pt_regs, -8);
164 show_efi_loaded_images(pt_regs);
168 void do_irq (struct pt_regs *pt_regs)
171 printf ("interrupt request\n");
172 fixup_pc(pt_regs, -8);
174 show_efi_loaded_images(pt_regs);