1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2013 4 * David Feng <fenghua@phytium.com.cn> 5 */ 6 7 #include <common.h> 8 #include <linux/compiler.h> 9 #include <efi_loader.h> 10 11 DECLARE_GLOBAL_DATA_PTR; 12 13 int interrupt_init(void) 14 { 15 return 0; 16 } 17 18 void enable_interrupts(void) 19 { 20 return; 21 } 22 23 int disable_interrupts(void) 24 { 25 return 0; 26 } 27 28 void show_regs(struct pt_regs *regs) 29 { 30 int i; 31 32 if (gd->flags & GD_FLG_RELOC) 33 printf("elr: %016lx lr : %016lx (reloc)\n", 34 regs->elr - gd->reloc_off, 35 regs->regs[30] - gd->reloc_off); 36 printf("elr: %016lx lr : %016lx\n", regs->elr, regs->regs[30]); 37 38 for (i = 0; i < 29; i += 2) 39 printf("x%-2d: %016lx x%-2d: %016lx\n", 40 i, regs->regs[i], i+1, regs->regs[i+1]); 41 printf("\n"); 42 } 43 44 /* 45 * do_bad_sync handles the impossible case in the Synchronous Abort vector. 46 */ 47 void do_bad_sync(struct pt_regs *pt_regs, unsigned int esr) 48 { 49 efi_restore_gd(); 50 printf("Bad mode in \"Synchronous Abort\" handler, esr 0x%08x\n", esr); 51 show_regs(pt_regs); 52 panic("Resetting CPU ...\n"); 53 } 54 55 /* 56 * do_bad_irq handles the impossible case in the Irq vector. 57 */ 58 void do_bad_irq(struct pt_regs *pt_regs, unsigned int esr) 59 { 60 efi_restore_gd(); 61 printf("Bad mode in \"Irq\" handler, esr 0x%08x\n", esr); 62 show_regs(pt_regs); 63 panic("Resetting CPU ...\n"); 64 } 65 66 /* 67 * do_bad_fiq handles the impossible case in the Fiq vector. 68 */ 69 void do_bad_fiq(struct pt_regs *pt_regs, unsigned int esr) 70 { 71 efi_restore_gd(); 72 printf("Bad mode in \"Fiq\" handler, esr 0x%08x\n", esr); 73 show_regs(pt_regs); 74 panic("Resetting CPU ...\n"); 75 } 76 77 /* 78 * do_bad_error handles the impossible case in the Error vector. 79 */ 80 void do_bad_error(struct pt_regs *pt_regs, unsigned int esr) 81 { 82 efi_restore_gd(); 83 printf("Bad mode in \"Error\" handler, esr 0x%08x\n", esr); 84 show_regs(pt_regs); 85 panic("Resetting CPU ...\n"); 86 } 87 88 /* 89 * do_sync handles the Synchronous Abort exception. 90 */ 91 void do_sync(struct pt_regs *pt_regs, unsigned int esr) 92 { 93 efi_restore_gd(); 94 printf("\"Synchronous Abort\" handler, esr 0x%08x\n", esr); 95 show_regs(pt_regs); 96 panic("Resetting CPU ...\n"); 97 } 98 99 /* 100 * do_irq handles the Irq exception. 101 */ 102 void do_irq(struct pt_regs *pt_regs, unsigned int esr) 103 { 104 efi_restore_gd(); 105 printf("\"Irq\" handler, esr 0x%08x\n", esr); 106 show_regs(pt_regs); 107 panic("Resetting CPU ...\n"); 108 } 109 110 /* 111 * do_fiq handles the Fiq exception. 112 */ 113 void do_fiq(struct pt_regs *pt_regs, unsigned int esr) 114 { 115 efi_restore_gd(); 116 printf("\"Fiq\" handler, esr 0x%08x\n", esr); 117 show_regs(pt_regs); 118 panic("Resetting CPU ...\n"); 119 } 120 121 /* 122 * do_error handles the Error exception. 123 * Errors are more likely to be processor specific, 124 * it is defined with weak attribute and can be redefined 125 * in processor specific code. 126 */ 127 void __weak do_error(struct pt_regs *pt_regs, unsigned int esr) 128 { 129 efi_restore_gd(); 130 printf("\"Error\" handler, esr 0x%08x\n", esr); 131 show_regs(pt_regs); 132 panic("Resetting CPU ...\n"); 133 } 134