/* * (C) Copyright 2003 * Texas Instruments * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Marius Groeger * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Alex Zuepke * * (C) Copyright 2002-2004 * Gary Jennejohn, DENX Software Engineering, * * (C) Copyright 2004 * Philippe Robin, ARM Ltd. * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; int interrupt_init (void) { /* * setup up stacks if necessary */ IRQ_STACK_START_IN = gd->irq_sp + 8; return 0; } void enable_interrupts (void) { return; } int disable_interrupts (void) { return 0; } void bad_mode (void) { panic ("Resetting CPU ...\n"); reset_cpu (0); } static void show_efi_loaded_images(struct pt_regs *regs) { efi_print_image_infos((void *)instruction_pointer(regs)); } void show_regs (struct pt_regs *regs) { unsigned long __maybe_unused flags; const char __maybe_unused *processor_modes[] = { "USER_26", "FIQ_26", "IRQ_26", "SVC_26", "UK4_26", "UK5_26", "UK6_26", "UK7_26", "UK8_26", "UK9_26", "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26", "USER_32", "FIQ_32", "IRQ_32", "SVC_32", "UK4_32", "UK5_32", "UK6_32", "ABT_32", "UK8_32", "UK9_32", "HYP_32", "UND_32", "UK12_32", "UK13_32", "UK14_32", "SYS_32", }; flags = condition_codes (regs); printf("pc : [<%08lx>] lr : [<%08lx>]\n", instruction_pointer(regs), regs->ARM_lr); if (gd->flags & GD_FLG_RELOC) { printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n", instruction_pointer(regs) - gd->reloc_off, regs->ARM_lr - gd->reloc_off); } printf("sp : %08lx ip : %08lx fp : %08lx\n", regs->ARM_sp, regs->ARM_ip, regs->ARM_fp); printf ("r10: %08lx r9 : %08lx r8 : %08lx\n", regs->ARM_r10, regs->ARM_r9, regs->ARM_r8); printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n", regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4); printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n", regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0); printf ("Flags: %c%c%c%c", flags & CC_N_BIT ? 'N' : 'n', flags & CC_Z_BIT ? 'Z' : 'z', flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v'); printf (" IRQs %s FIQs %s Mode %s%s\n", interrupts_enabled (regs) ? "on" : "off", fast_interrupts_enabled (regs) ? "on" : "off", processor_modes[processor_mode (regs)], thumb_mode (regs) ? " (T)" : ""); } /* fixup PC to point to the instruction leading to the exception */ static inline void fixup_pc(struct pt_regs *regs, int offset) { uint32_t pc = instruction_pointer(regs) + offset; regs->ARM_pc = pc | (regs->ARM_pc & PCMASK); } void do_undefined_instruction (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("undefined instruction\n"); fixup_pc(pt_regs, -4); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); } void do_software_interrupt (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("software interrupt\n"); fixup_pc(pt_regs, -4); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); } void do_prefetch_abort (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("prefetch abort\n"); fixup_pc(pt_regs, -8); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); } void do_data_abort (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("data abort\n"); fixup_pc(pt_regs, -8); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); } void do_not_used (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("not used\n"); fixup_pc(pt_regs, -8); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); } void do_fiq (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("fast interrupt request\n"); fixup_pc(pt_regs, -8); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); } void do_irq (struct pt_regs *pt_regs) { efi_restore_gd(); printf ("interrupt request\n"); fixup_pc(pt_regs, -8); show_regs (pt_regs); show_efi_loaded_images(pt_regs); bad_mode (); }