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>
26 DECLARE_GLOBAL_DATA_PTR;
28 int interrupt_init (void)
31 * setup up stacks if necessary
33 IRQ_STACK_START_IN = gd->irq_sp + 8;
38 void enable_interrupts (void)
42 int disable_interrupts (void)
49 panic ("Resetting CPU ...\n");
53 static void show_efi_loaded_images(struct pt_regs *regs)
55 efi_print_image_infos((void *)instruction_pointer(regs));
58 static void dump_instr(struct pt_regs *regs)
60 unsigned long addr = instruction_pointer(regs);
61 const int thumb = thumb_mode(regs);
62 const int width = thumb ? 4 : 8;
70 for (i = -4; i < 1 + !!thumb; i++) {
74 val = ((u16 *)addr)[i];
76 val = ((u32 *)addr)[i];
77 printf(i == 0 ? "(%0*x) " : "%0*x ", width, val);
82 void show_regs (struct pt_regs *regs)
84 unsigned long __maybe_unused flags;
85 const char __maybe_unused *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", "HYP_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 instruction_pointer(regs), regs->ARM_lr);
100 if (gd->flags & GD_FLG_RELOC) {
101 printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n",
102 instruction_pointer(regs) - gd->reloc_off,
103 regs->ARM_lr - gd->reloc_off);
105 printf("sp : %08lx ip : %08lx fp : %08lx\n",
106 regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
107 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
108 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
109 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
110 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
111 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
112 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
113 printf ("Flags: %c%c%c%c",
114 flags & CC_N_BIT ? 'N' : 'n',
115 flags & CC_Z_BIT ? 'Z' : 'z',
116 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
117 printf (" IRQs %s FIQs %s Mode %s%s\n",
118 interrupts_enabled (regs) ? "on" : "off",
119 fast_interrupts_enabled (regs) ? "on" : "off",
120 processor_modes[processor_mode (regs)],
121 thumb_mode (regs) ? " (T)" : "");
125 /* fixup PC to point to the instruction leading to the exception */
126 static inline void fixup_pc(struct pt_regs *regs, int offset)
128 uint32_t pc = instruction_pointer(regs) + offset;
129 regs->ARM_pc = pc | (regs->ARM_pc & PCMASK);
132 void do_undefined_instruction (struct pt_regs *pt_regs)
135 printf ("undefined instruction\n");
136 fixup_pc(pt_regs, -4);
138 show_efi_loaded_images(pt_regs);
142 void do_software_interrupt (struct pt_regs *pt_regs)
145 printf ("software interrupt\n");
146 fixup_pc(pt_regs, -4);
148 show_efi_loaded_images(pt_regs);
152 void do_prefetch_abort (struct pt_regs *pt_regs)
155 printf ("prefetch abort\n");
156 fixup_pc(pt_regs, -8);
158 show_efi_loaded_images(pt_regs);
162 void do_data_abort (struct pt_regs *pt_regs)
165 printf ("data abort\n");
166 fixup_pc(pt_regs, -8);
168 show_efi_loaded_images(pt_regs);
172 void do_not_used (struct pt_regs *pt_regs)
175 printf ("not used\n");
176 fixup_pc(pt_regs, -8);
178 show_efi_loaded_images(pt_regs);
182 void do_fiq (struct pt_regs *pt_regs)
185 printf ("fast interrupt request\n");
186 fixup_pc(pt_regs, -8);
188 show_efi_loaded_images(pt_regs);
192 void do_irq (struct pt_regs *pt_regs)
195 printf ("interrupt request\n");
196 fixup_pc(pt_regs, -8);
198 show_efi_loaded_images(pt_regs);