Home | History | Annotate | Download | only in lib 
      1 // SPDX-License-Identifier: GPL-2.0+
      2 /*
      3  * (C) Copyright 2013
      4  * David Feng <fenghua (at) 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