1 // SPDX-License-Identifier: GPL-2.0+
4 * Texas Instruments <www.ti.com>
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
11 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
14 * (C) Copyright 2002-2004
23 #include <efi_loader.h>
25 #include <asm/global_data.h>
26 #include <asm/proc-armv/ptrace.h>
27 #include <asm/ptrace.h>
28 #include <asm/u-boot-arm.h>
30 DECLARE_GLOBAL_DATA_PTR;
32 int interrupt_init(void)
35 * setup up stacks if necessary
37 IRQ_STACK_START_IN = gd->irq_sp + 8;
44 void enable_interrupts(void)
48 int disable_interrupts(void)
55 panic ("Resetting CPU ...\n");
59 static void show_efi_loaded_images(struct pt_regs *regs)
61 efi_print_image_infos((void *)instruction_pointer(regs));
64 static void dump_instr(struct pt_regs *regs)
66 unsigned long addr = instruction_pointer(regs);
67 const int thumb = thumb_mode(regs);
68 const int width = thumb ? 4 : 8;
76 for (i = -4; i < 1 + !!thumb; i++) {
80 val = ((u16 *)addr)[i];
82 val = ((u32 *)addr)[i];
83 printf(i == 0 ? "(%0*x) " : "%0*x ", width, val);
88 void show_regs (struct pt_regs *regs)
90 unsigned long __maybe_unused flags;
91 const char __maybe_unused *processor_modes[] = {
92 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
93 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
94 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
95 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
96 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
97 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
98 "UK8_32", "UK9_32", "HYP_32", "UND_32",
99 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
102 flags = condition_codes (regs);
104 printf("pc : [<%08lx>] lr : [<%08lx>]\n",
105 instruction_pointer(regs), regs->ARM_lr);
106 if (gd->flags & GD_FLG_RELOC) {
107 printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n",
108 instruction_pointer(regs) - gd->reloc_off,
109 regs->ARM_lr - gd->reloc_off);
111 printf("sp : %08lx ip : %08lx fp : %08lx\n",
112 regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
113 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
114 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
115 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
116 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
117 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
118 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
119 printf ("Flags: %c%c%c%c",
120 flags & CC_N_BIT ? 'N' : 'n',
121 flags & CC_Z_BIT ? 'Z' : 'z',
122 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
123 printf (" IRQs %s FIQs %s Mode %s%s\n",
124 interrupts_enabled (regs) ? "on" : "off",
125 fast_interrupts_enabled (regs) ? "on" : "off",
126 processor_modes[processor_mode (regs)],
127 thumb_mode (regs) ? " (T)" : "");
131 /* fixup PC to point to the instruction leading to the exception */
132 static inline void fixup_pc(struct pt_regs *regs, int offset)
134 uint32_t pc = instruction_pointer(regs) + offset;
135 regs->ARM_pc = pc | (regs->ARM_pc & PCMASK);
138 void do_undefined_instruction (struct pt_regs *pt_regs)
141 printf ("undefined instruction\n");
142 fixup_pc(pt_regs, -4);
144 show_efi_loaded_images(pt_regs);
148 void do_software_interrupt (struct pt_regs *pt_regs)
151 printf ("software interrupt\n");
152 fixup_pc(pt_regs, -4);
154 show_efi_loaded_images(pt_regs);
158 void do_prefetch_abort (struct pt_regs *pt_regs)
161 printf ("prefetch abort\n");
162 fixup_pc(pt_regs, -8);
164 show_efi_loaded_images(pt_regs);
168 void do_data_abort (struct pt_regs *pt_regs)
171 printf ("data abort\n");
172 fixup_pc(pt_regs, -8);
174 show_efi_loaded_images(pt_regs);
178 void do_not_used (struct pt_regs *pt_regs)
181 printf ("not used\n");
182 fixup_pc(pt_regs, -8);
184 show_efi_loaded_images(pt_regs);
188 void do_fiq (struct pt_regs *pt_regs)
191 printf ("fast interrupt request\n");
192 fixup_pc(pt_regs, -8);
194 show_efi_loaded_images(pt_regs);
198 void do_irq (struct pt_regs *pt_regs)
201 printf ("interrupt request\n");
202 fixup_pc(pt_regs, -8);
204 show_efi_loaded_images(pt_regs);